| /* |
| * Copyright (C) 2006, 2007 Apple Inc. All rights reserved. |
| * Copyright (C) 2007 Trolltech ASA |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of |
| * its contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
| * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "FrameLoader.h" |
| |
| #include "CString.h" |
| #include "Cache.h" |
| #include "CachedPage.h" |
| #include "Chrome.h" |
| #include "DOMImplementation.h" |
| #include "DocLoader.h" |
| #include "Document.h" |
| #include "DocumentLoader.h" |
| #include "EditCommand.h" |
| #include "Editor.h" |
| #include "EditorClient.h" |
| #include "Element.h" |
| #include "Event.h" |
| #include "EventNames.h" |
| #include "FloatRect.h" |
| #include "FormState.h" |
| #include "Frame.h" |
| #include "FrameLoadRequest.h" |
| #include "FrameLoaderClient.h" |
| #include "FramePrivate.h" |
| #include "FrameTree.h" |
| #include "FrameView.h" |
| #include "HTMLFormElement.h" |
| #include "HTMLFrameElement.h" |
| #include "HTMLNames.h" |
| #include "HTMLObjectElement.h" |
| #include "HTTPParsers.h" |
| #include "HistoryItem.h" |
| #include "IconDatabase.h" |
| #include "IconLoader.h" |
| #include "InspectorController.h" |
| #include "Logging.h" |
| #include "MainResourceLoader.h" |
| #include "MIMETypeRegistry.h" |
| #include "Page.h" |
| #include "PageCache.h" |
| #include "ProgressTracker.h" |
| #include "RenderPart.h" |
| #include "RenderWidget.h" |
| #include "ResourceHandle.h" |
| #include "ResourceRequest.h" |
| #include "SegmentedString.h" |
| #include "Settings.h" |
| #include "SystemTime.h" |
| #include "TextResourceDecoder.h" |
| #include "WindowFeatures.h" |
| #include "XMLHttpRequest.h" |
| #include "XMLTokenizer.h" |
| #include "kjs_binding.h" |
| #include "kjs_proxy.h" |
| #include "kjs_window.h" |
| #include <kjs/JSLock.h> |
| #include <kjs/object.h> |
| |
| using KJS::UString; |
| using KJS::JSLock; |
| using KJS::JSValue; |
| |
| namespace WebCore { |
| |
| using namespace HTMLNames; |
| using namespace EventNames; |
| |
| #if USE(LOW_BANDWIDTH_DISPLAY) |
| const unsigned int cMaxPendingSourceLengthInLowBandwidthDisplay = 128 * 1024; |
| #endif |
| |
| struct FormSubmission { |
| const char* action; |
| String URL; |
| RefPtr<FormData> data; |
| String target; |
| String contentType; |
| String boundary; |
| RefPtr<Event> event; |
| |
| FormSubmission(const char* a, const String& u, PassRefPtr<FormData> d, const String& t, |
| const String& ct, const String& b, PassRefPtr<Event> e) |
| : action(a) |
| , URL(u) |
| , data(d) |
| , target(t) |
| , contentType(ct) |
| , boundary(b) |
| , event(e) |
| { |
| } |
| }; |
| |
| struct ScheduledRedirection { |
| enum Type { redirection, locationChange, historyNavigation, locationChangeDuringLoad }; |
| Type type; |
| double delay; |
| String URL; |
| String referrer; |
| int historySteps; |
| bool lockHistory; |
| bool wasUserGesture; |
| |
| ScheduledRedirection(double redirectDelay, const String& redirectURL, bool redirectLockHistory, bool userGesture) |
| : type(redirection) |
| , delay(redirectDelay) |
| , URL(redirectURL) |
| , historySteps(0) |
| , lockHistory(redirectLockHistory) |
| , wasUserGesture(userGesture) |
| { |
| } |
| |
| ScheduledRedirection(Type locationChangeType, |
| const String& locationChangeURL, const String& locationChangeReferrer, |
| bool locationChangeLockHistory, bool locationChangeWasUserGesture) |
| : type(locationChangeType) |
| , delay(0) |
| , URL(locationChangeURL) |
| , referrer(locationChangeReferrer) |
| , historySteps(0) |
| , lockHistory(locationChangeLockHistory) |
| , wasUserGesture(locationChangeWasUserGesture) |
| { |
| } |
| |
| explicit ScheduledRedirection(int historyNavigationSteps) |
| : type(historyNavigation) |
| , delay(0) |
| , historySteps(historyNavigationSteps) |
| , lockHistory(false) |
| , wasUserGesture(false) |
| { |
| } |
| }; |
| |
| static double storedTimeOfLastCompletedLoad; |
| static bool m_restrictAccessToLocal = false; |
| |
| static bool getString(JSValue* result, String& string) |
| { |
| if (!result) |
| return false; |
| JSLock lock; |
| UString ustring; |
| if (!result->getString(ustring)) |
| return false; |
| string = ustring; |
| return true; |
| } |
| |
| bool isBackForwardLoadType(FrameLoadType type) |
| { |
| switch (type) { |
| case FrameLoadTypeStandard: |
| case FrameLoadTypeReload: |
| case FrameLoadTypeReloadAllowingStaleData: |
| case FrameLoadTypeSame: |
| case FrameLoadTypeRedirectWithLockedHistory: |
| case FrameLoadTypeReplace: |
| return false; |
| case FrameLoadTypeBack: |
| case FrameLoadTypeForward: |
| case FrameLoadTypeIndexedBackForward: |
| return true; |
| } |
| ASSERT_NOT_REACHED(); |
| return false; |
| } |
| |
| static int numRequests(Document* document) |
| { |
| if (!document) |
| return 0; |
| |
| return document->docLoader()->requestCount(); |
| } |
| |
| FrameLoader::FrameLoader(Frame* frame, FrameLoaderClient* client) |
| : m_frame(frame) |
| , m_client(client) |
| , m_state(FrameStateCommittedPage) |
| , m_loadType(FrameLoadTypeStandard) |
| , m_policyLoadType(FrameLoadTypeStandard) |
| , m_delegateIsHandlingProvisionalLoadError(false) |
| , m_delegateIsDecidingNavigationPolicy(false) |
| , m_delegateIsHandlingUnimplementablePolicy(false) |
| , m_firstLayoutDone(false) |
| , m_quickRedirectComing(false) |
| , m_sentRedirectNotification(false) |
| , m_inStopAllLoaders(false) |
| , m_cachePolicy(CachePolicyVerify) |
| , m_isExecutingJavaScriptFormAction(false) |
| , m_isRunningScript(false) |
| , m_didCallImplicitClose(false) |
| , m_wasUnloadEventEmitted(false) |
| , m_isComplete(false) |
| , m_isLoadingMainResource(false) |
| , m_cancellingWithLoadInProgress(false) |
| , m_needsClear(false) |
| , m_shouldClearWindowProperties(true) |
| , m_receivedData(false) |
| , m_encodingWasChosenByUser(false) |
| , m_containsPlugIns(false) |
| , m_redirectionTimer(this, &FrameLoader::redirectionTimerFired) |
| , m_checkCompletedTimer(this, &FrameLoader::checkCompletedTimerFired) |
| , m_checkLoadCompleteTimer(this, &FrameLoader::checkLoadCompleteTimerFired) |
| , m_opener(0) |
| , m_openedByDOM(false) |
| , m_creatingInitialEmptyDocument(false) |
| , m_committedFirstRealDocumentLoad(false) |
| #if USE(LOW_BANDWIDTH_DISPLAY) |
| , m_useLowBandwidthDisplay(true) |
| , m_finishedParsingDuringLowBandwidthDisplay(false) |
| , m_needToSwitchOutLowBandwidthDisplay(false) |
| #endif |
| { |
| } |
| |
| FrameLoader::~FrameLoader() |
| { |
| setOpener(0); |
| |
| HashSet<Frame*>::iterator end = m_openedFrames.end(); |
| for (HashSet<Frame*>::iterator it = m_openedFrames.begin(); it != end; ++it) |
| (*it)->loader()->m_opener = 0; |
| |
| m_client->frameLoaderDestroyed(); |
| } |
| |
| void FrameLoader::init() |
| { |
| // this somewhat odd set of steps is needed to give the frame an initial empty document |
| m_creatingInitialEmptyDocument = true; |
| setPolicyDocumentLoader(m_client->createDocumentLoader(ResourceRequest(String("")), SubstituteData()).get()); |
| setProvisionalDocumentLoader(m_policyDocumentLoader.get()); |
| setState(FrameStateProvisional); |
| m_provisionalDocumentLoader->setResponse(ResourceResponse(KURL(), "text/html", 0, String(), String())); |
| m_provisionalDocumentLoader->finishedLoading(); |
| begin(KURL(), false); |
| end(); |
| m_frame->document()->cancelParsing(); |
| m_creatingInitialEmptyDocument = false; |
| m_didCallImplicitClose = true; |
| } |
| |
| void FrameLoader::setDefersLoading(bool defers) |
| { |
| if (m_documentLoader) |
| m_documentLoader->setDefersLoading(defers); |
| if (m_provisionalDocumentLoader) |
| m_provisionalDocumentLoader->setDefersLoading(defers); |
| if (m_policyDocumentLoader) |
| m_policyDocumentLoader->setDefersLoading(defers); |
| m_client->setDefersLoading(defers); |
| } |
| |
| Frame* FrameLoader::createWindow(const FrameLoadRequest& request, const WindowFeatures& features, bool& created) |
| { |
| ASSERT(!features.dialog || request.frameName().isEmpty()); |
| |
| if (!request.frameName().isEmpty() && request.frameName() != "_blank") |
| if (Frame* frame = m_frame->tree()->find(request.frameName())) { |
| if (!request.resourceRequest().url().isEmpty()) |
| frame->loader()->load(request, false, true, 0, 0, HashMap<String, String>()); |
| if (Page* page = frame->page()) |
| page->chrome()->focus(); |
| created = false; |
| return frame; |
| } |
| |
| // FIXME: Setting the referrer should be the caller's responsibility. |
| FrameLoadRequest requestWithReferrer = request; |
| requestWithReferrer.resourceRequest().setHTTPReferrer(m_outgoingReferrer); |
| |
| Page* page = m_frame->page(); |
| if (page) { |
| if (features.dialog) |
| page = page->chrome()->createModalDialog(m_frame, requestWithReferrer); |
| else |
| page = page->chrome()->createWindow(m_frame, requestWithReferrer); |
| } |
| if (!page) |
| return 0; |
| |
| Frame* frame = page->mainFrame(); |
| if (request.frameName() != "_blank") |
| frame->tree()->setName(request.frameName()); |
| |
| frame->loader()->setShouldClearWindowProperties(false); |
| |
| page->chrome()->setToolbarsVisible(features.toolBarVisible || features.locationBarVisible); |
| page->chrome()->setStatusbarVisible(features.statusBarVisible); |
| page->chrome()->setScrollbarsVisible(features.scrollbarsVisible); |
| page->chrome()->setMenubarVisible(features.menuBarVisible); |
| page->chrome()->setResizable(features.resizable); |
| |
| // 'x' and 'y' specify the location of the window, while 'width' and 'height' |
| // specify the size of the page. We can only resize the window, so |
| // adjust for the difference between the window size and the page size. |
| |
| FloatRect windowRect = page->chrome()->windowRect(); |
| FloatSize pageSize = page->chrome()->pageRect().size(); |
| if (features.xSet) |
| windowRect.setX(features.x); |
| if (features.ySet) |
| windowRect.setY(features.y); |
| if (features.widthSet) |
| windowRect.setWidth(features.width + (windowRect.width() - pageSize.width())); |
| if (features.heightSet) |
| windowRect.setHeight(features.height + (windowRect.height() - pageSize.height())); |
| page->chrome()->setWindowRect(windowRect); |
| |
| page->chrome()->show(); |
| |
| created = true; |
| return frame; |
| } |
| |
| bool FrameLoader::canHandleRequest(const ResourceRequest& request) |
| { |
| return m_client->canHandleRequest(request); |
| } |
| |
| void FrameLoader::changeLocation(const String& URL, const String& referrer, bool lockHistory, bool userGesture) |
| { |
| changeLocation(completeURL(URL), referrer, lockHistory, userGesture); |
| } |
| |
| void FrameLoader::changeLocation(const KURL& URL, const String& referrer, bool lockHistory, bool userGesture) |
| { |
| if (URL.url().find("javascript:", 0, false) == 0) { |
| String script = KURL::decode_string(URL.url().mid(strlen("javascript:"))); |
| JSValue* result = executeScript(script, userGesture); |
| String scriptResult; |
| if (getString(result, scriptResult)) { |
| begin(m_URL); |
| write(scriptResult); |
| end(); |
| } |
| return; |
| } |
| |
| ResourceRequestCachePolicy policy = (m_cachePolicy == CachePolicyReload) || (m_cachePolicy == CachePolicyRefresh) |
| ? ReloadIgnoringCacheData : UseProtocolCachePolicy; |
| ResourceRequest request(URL, referrer, policy); |
| |
| urlSelected(request, "_self", 0, lockHistory, userGesture); |
| } |
| |
| void FrameLoader::urlSelected(const ResourceRequest& request, const String& _target, Event* triggeringEvent, bool lockHistory, bool userGesture) |
| { |
| String target = _target; |
| if (target.isEmpty() && m_frame->document()) |
| target = m_frame->document()->baseTarget(); |
| |
| const KURL& url = request.url(); |
| if (url.url().startsWith("javascript:", false)) { |
| executeScript(KURL::decode_string(url.url().mid(strlen("javascript:"))), true); |
| return; |
| } |
| |
| if (!url.isValid() && !url.isEmpty()) |
| return; |
| |
| FrameLoadRequest frameRequest(request, target); |
| |
| if (frameRequest.resourceRequest().httpReferrer().isEmpty()) |
| frameRequest.resourceRequest().setHTTPReferrer(m_outgoingReferrer); |
| |
| urlSelected(frameRequest, triggeringEvent, lockHistory, userGesture); |
| } |
| |
| bool FrameLoader::requestFrame(HTMLFrameOwnerElement* ownerElement, const String& urlString, const AtomicString& frameName) |
| { |
| #if USE(LOW_BANDWIDTH_DISPLAY) |
| // don't create sub-frame during low bandwidth display |
| if (frame()->document()->inLowBandwidthDisplay()) { |
| m_needToSwitchOutLowBandwidthDisplay = true; |
| return false; |
| } |
| #endif |
| |
| // Support for <frame src="javascript:string"> |
| KURL scriptURL; |
| KURL url; |
| if (urlString.startsWith("javascript:", false)) { |
| scriptURL = urlString.deprecatedString(); |
| url = "about:blank"; |
| } else |
| url = completeURL(urlString); |
| |
| Frame* frame = m_frame->tree()->child(frameName); |
| if (frame) |
| frame->loader()->scheduleLocationChange(url.url(), m_outgoingReferrer, true, userGestureHint()); |
| else |
| frame = loadSubframe(ownerElement, url, frameName, m_outgoingReferrer); |
| |
| if (!frame) |
| return false; |
| |
| if (!scriptURL.isEmpty()) |
| frame->loader()->replaceContentsWithScriptResult(scriptURL); |
| |
| return true; |
| } |
| |
| Frame* FrameLoader::loadSubframe(HTMLFrameOwnerElement* ownerElement, const KURL& url, const String& name, const String& referrer) |
| { |
| bool allowsScrolling = true; |
| int marginWidth = -1; |
| int marginHeight = -1; |
| if (ownerElement->hasTagName(frameTag) || ownerElement->hasTagName(iframeTag)) { |
| HTMLFrameElementBase* o = static_cast<HTMLFrameElementBase*>(ownerElement); |
| allowsScrolling = o->scrollingMode() != ScrollbarAlwaysOff; |
| marginWidth = o->getMarginWidth(); |
| marginHeight = o->getMarginHeight(); |
| } |
| |
| if (!canLoad(url, referrer)) { |
| FrameLoader::reportLocalLoadFailed(m_frame->page(), url.url()); |
| return 0; |
| } |
| |
| bool hideReferrer = shouldHideReferrer(url, referrer); |
| Frame* frame = m_client->createFrame(url, name, ownerElement, hideReferrer ? String() : referrer, |
| allowsScrolling, marginWidth, marginHeight); |
| |
| if (!frame) { |
| checkCallImplicitClose(); |
| return 0; |
| } |
| |
| frame->loader()->m_isComplete = false; |
| |
| if (ownerElement->renderer() && frame->view()) |
| static_cast<RenderWidget*>(ownerElement->renderer())->setWidget(frame->view()); |
| |
| checkCallImplicitClose(); |
| |
| // In these cases, the synchronous load would have finished |
| // before we could connect the signals, so make sure to send the |
| // completed() signal for the child by hand |
| // FIXME: In this case the Frame will have finished loading before |
| // it's being added to the child list. It would be a good idea to |
| // create the child first, then invoke the loader separately. |
| if (url.isEmpty() || url == "about:blank") { |
| frame->loader()->completed(); |
| frame->loader()->checkCompleted(); |
| } |
| |
| return frame; |
| } |
| |
| void FrameLoader::submitFormAgain() |
| { |
| if (m_isRunningScript) |
| return; |
| OwnPtr<FormSubmission> form(m_deferredFormSubmission.release()); |
| if (form) |
| submitForm(form->action, form->URL, form->data, form->target, |
| form->contentType, form->boundary, form->event.get()); |
| } |
| |
| void FrameLoader::submitForm(const char* action, const String& url, PassRefPtr<FormData> formData, |
| const String& target, const String& contentType, const String& boundary, Event* event) |
| { |
| ASSERT(formData.get()); |
| |
| KURL u = completeURL(url.isNull() ? "" : url); |
| if (!u.isValid()) |
| return; |
| |
| DeprecatedString urlString = u.url(); |
| if (urlString.startsWith("javascript:", false)) { |
| m_isExecutingJavaScriptFormAction = true; |
| executeScript(KURL::decode_string(urlString.mid(strlen("javascript:")))); |
| m_isExecutingJavaScriptFormAction = false; |
| return; |
| } |
| |
| if (m_isRunningScript) { |
| if (m_deferredFormSubmission) |
| return; |
| m_deferredFormSubmission.set(new FormSubmission(action, url, formData, target, |
| contentType, boundary, event)); |
| return; |
| } |
| |
| FrameLoadRequest frameRequest; |
| |
| if (!m_outgoingReferrer.isEmpty()) |
| frameRequest.resourceRequest().setHTTPReferrer(m_outgoingReferrer); |
| |
| frameRequest.setFrameName(target.isEmpty() ? m_frame->document()->baseTarget() : target); |
| |
| // Handle mailto: forms |
| bool mailtoForm = u.protocol() == "mailto"; |
| if (mailtoForm) { |
| // Append body= |
| String body; |
| if (equalIgnoringCase(contentType, "multipart/form-data")) |
| // FIXME: is this correct? I suspect not, but what site can we test this on? |
| body = formData->flattenToString(); |
| else if (equalIgnoringCase(contentType, "text/plain")) |
| // Convention seems to be to decode, and s/&/\n/ |
| body = KURL::decode_string( |
| formData->flattenToString().replace('&', '\n') |
| .replace('+', ' ').deprecatedString()); // Recode for the URL |
| else |
| body = formData->flattenToString(); |
| |
| String query = u.query(); |
| if (!query.isEmpty()) |
| query.append('&'); |
| u.setQuery((query + "body=" + KURL::encode_string(body.deprecatedString())).deprecatedString()); |
| } |
| |
| if (strcmp(action, "GET") == 0) { |
| if (!mailtoForm) |
| u.setQuery(formData->flattenToString().deprecatedString()); |
| } else { |
| frameRequest.resourceRequest().setHTTPBody(formData.get()); |
| frameRequest.resourceRequest().setHTTPMethod("POST"); |
| |
| // construct some user headers if necessary |
| if (contentType.isNull() || contentType == "application/x-www-form-urlencoded") |
| frameRequest.resourceRequest().setHTTPContentType(contentType); |
| else // contentType must be "multipart/form-data" |
| frameRequest.resourceRequest().setHTTPContentType(contentType + "; boundary=" + boundary); |
| } |
| |
| frameRequest.resourceRequest().setURL(u); |
| |
| submitForm(frameRequest, event); |
| } |
| |
| void FrameLoader::stopLoading(bool sendUnload) |
| { |
| if (m_frame->document() && m_frame->document()->tokenizer()) |
| m_frame->document()->tokenizer()->stopParsing(); |
| |
| if (sendUnload) { |
| if (m_frame->document()) { |
| if (m_didCallImplicitClose && !m_wasUnloadEventEmitted) { |
| Node* currentFocusedNode = m_frame->document()->focusedNode(); |
| if (currentFocusedNode) |
| currentFocusedNode->aboutToUnload(); |
| m_frame->document()->dispatchWindowEvent(unloadEvent, false, false); |
| if (m_frame->document()) |
| m_frame->document()->updateRendering(); |
| m_wasUnloadEventEmitted = true; |
| } |
| } |
| if (m_frame->document() && !m_frame->document()->inPageCache()) |
| m_frame->document()->removeAllEventListenersFromAllNodes(); |
| } |
| |
| m_isComplete = true; // to avoid calling completed() in finishedParsing() (David) |
| m_isLoadingMainResource = false; |
| m_didCallImplicitClose = true; // don't want that one either |
| m_cachePolicy = CachePolicyVerify; // Why here? |
| |
| if (m_frame->document() && m_frame->document()->parsing()) { |
| finishedParsing(); |
| m_frame->document()->setParsing(false); |
| } |
| |
| m_workingURL = KURL(); |
| |
| if (Document* doc = m_frame->document()) { |
| if (DocLoader* docLoader = doc->docLoader()) |
| cache()->loader()->cancelRequests(docLoader); |
| XMLHttpRequest::cancelRequests(doc); |
| } |
| |
| // tell all subframes to stop as well |
| for (Frame* child = m_frame->tree()->firstChild(); child; child = child->tree()->nextSibling()) |
| child->loader()->stopLoading(sendUnload); |
| |
| cancelRedirection(); |
| |
| #if USE(LOW_BANDWIDTH_DISPLAY) |
| if (m_frame->document() && m_frame->document()->inLowBandwidthDisplay()) { |
| // Since loading is forced to stop, reset the state without really switching. |
| m_needToSwitchOutLowBandwidthDisplay = false; |
| switchOutLowBandwidthDisplayIfReady(); |
| } |
| #endif |
| } |
| |
| void FrameLoader::stop() |
| { |
| // http://bugs.webkit.org/show_bug.cgi?id=10854 |
| // The frame's last ref may be removed and it will be deleted by checkCompleted(). |
| RefPtr<Frame> protector(m_frame); |
| |
| if (m_frame->document()) { |
| if (m_frame->document()->tokenizer()) |
| m_frame->document()->tokenizer()->stopParsing(); |
| m_frame->document()->finishParsing(); |
| } else |
| // WebKit partially uses WebCore when loading non-HTML docs. In these cases doc==nil, but |
| // WebCore is enough involved that we need to checkCompleted() in order for m_bComplete to |
| // become true. An example is when a subframe is a pure text doc, and that subframe is the |
| // last one to complete. |
| checkCompleted(); |
| if (m_iconLoader) |
| m_iconLoader->stopLoading(); |
| } |
| |
| bool FrameLoader::closeURL() |
| { |
| saveDocumentState(); |
| stopLoading(true); |
| m_frame->editor()->clearUndoRedoOperations(); |
| return true; |
| } |
| |
| void FrameLoader::cancelRedirection(bool cancelWithLoadInProgress) |
| { |
| m_cancellingWithLoadInProgress = cancelWithLoadInProgress; |
| |
| stopRedirectionTimer(); |
| |
| m_scheduledRedirection.clear(); |
| } |
| |
| KURL FrameLoader::iconURL() |
| { |
| // If this isn't a top level frame, return nothing |
| if (m_frame->tree() && m_frame->tree()->parent()) |
| return ""; |
| |
| // If we have an iconURL from a Link element, return that |
| if (m_frame->document() && !m_frame->document()->iconURL().isEmpty()) |
| return m_frame->document()->iconURL().deprecatedString(); |
| |
| // Don't return a favicon iconURL unless we're http or https |
| if (m_URL.protocol() != "http" && m_URL.protocol() != "https") |
| return ""; |
| |
| KURL url; |
| url.setProtocol(m_URL.protocol()); |
| url.setHost(m_URL.host()); |
| if (int port = m_URL.port()) |
| url.setPort(port); |
| url.setPath("/favicon.ico"); |
| return url; |
| } |
| |
| bool FrameLoader::didOpenURL(const KURL& url) |
| { |
| if (m_scheduledRedirection && m_scheduledRedirection->type == ScheduledRedirection::locationChangeDuringLoad) |
| // A redirect was scheduled before the document was created. |
| // This can happen when one frame changes another frame's location. |
| return false; |
| |
| cancelRedirection(); |
| m_frame->editor()->setLastEditCommand(0); |
| closeURL(); |
| |
| m_isComplete = false; |
| m_isLoadingMainResource = true; |
| m_didCallImplicitClose = false; |
| |
| m_frame->setJSStatusBarText(String()); |
| m_frame->setJSDefaultStatusBarText(String()); |
| |
| m_URL = url; |
| if (m_URL.protocol().startsWith("http") && !m_URL.host().isEmpty() && m_URL.path().isEmpty()) |
| m_URL.setPath("/"); |
| m_workingURL = m_URL; |
| |
| started(); |
| |
| return true; |
| } |
| |
| void FrameLoader::didExplicitOpen() |
| { |
| m_isComplete = false; |
| m_didCallImplicitClose = false; |
| |
| // Prevent window.open(url) -- eg window.open("about:blank") -- from blowing away results |
| // from a subsequent window.document.open / window.document.write call. |
| // Cancelling redirection here works for all cases because document.open |
| // implicitly precedes document.write. |
| cancelRedirection(); |
| if (m_frame->document()->URL() != "about:blank") |
| m_URL = m_frame->document()->URL(); |
| } |
| |
| void FrameLoader::replaceContentsWithScriptResult(const KURL& url) |
| { |
| JSValue* result = executeScript(KURL::decode_string(url.url().mid(strlen("javascript:")))); |
| String scriptResult; |
| if (!getString(result, scriptResult)) |
| return; |
| begin(); |
| write(scriptResult); |
| end(); |
| } |
| |
| JSValue* FrameLoader::executeScript(const String& script, bool forceUserGesture) |
| { |
| return executeScript(forceUserGesture ? String() : String(m_URL.url()), 0, script); |
| } |
| |
| JSValue* FrameLoader::executeScript(const String& URL, int baseLine, const String& script) |
| { |
| KJSProxy* proxy = m_frame->scriptProxy(); |
| if (!proxy) |
| return 0; |
| |
| bool wasRunningScript = m_isRunningScript; |
| m_isRunningScript = true; |
| |
| JSValue* result = proxy->evaluate(URL, baseLine, script); |
| |
| if (!wasRunningScript) { |
| m_isRunningScript = false; |
| submitFormAgain(); |
| Document::updateDocumentsRendering(); |
| } |
| |
| return result; |
| } |
| |
| void FrameLoader::cancelAndClear() |
| { |
| cancelRedirection(); |
| |
| if (!m_isComplete) |
| closeURL(); |
| |
| clear(false); |
| } |
| |
| void FrameLoader::clear(bool clearWindowProperties) |
| { |
| // FIXME: Commenting out the below line causes <http://bugs.webkit.org/show_bug.cgi?id=11212>, but putting it |
| // back causes a measurable performance regression which we will need to fix to restore the correct behavior |
| // urlsBridgeKnowsAbout.clear(); |
| |
| #if PLATFORM(MAC) |
| m_frame->setMarkedTextRange(0, nil, nil); |
| #endif |
| |
| if (!m_needsClear) |
| return; |
| m_needsClear = false; |
| |
| if (m_frame->document() && !m_frame->document()->inPageCache()) { |
| m_frame->document()->cancelParsing(); |
| if (m_frame->document()->attached()) { |
| m_frame->document()->willRemove(); |
| m_frame->document()->detach(); |
| } |
| } |
| |
| // Do this after detaching the document so that the unload event works. |
| if (clearWindowProperties && m_shouldClearWindowProperties) { |
| m_frame->clearScriptProxy(); |
| m_frame->clearDOMWindow(); |
| } |
| |
| m_frame->selectionController()->clear(); |
| m_frame->eventHandler()->clear(); |
| if (m_frame->view()) |
| m_frame->view()->clear(); |
| |
| // Do not drop the document before the script proxy and view are cleared, as some destructors |
| // might still try to access the document. |
| m_frame->setDocument(0); |
| m_decoder = 0; |
| |
| m_containsPlugIns = false; |
| m_frame->cleanupScriptObjects(); |
| |
| m_redirectionTimer.stop(); |
| m_scheduledRedirection.clear(); |
| |
| m_checkCompletedTimer.stop(); |
| m_checkLoadCompleteTimer.stop(); |
| |
| m_receivedData = false; |
| |
| if (!m_encodingWasChosenByUser) |
| m_encoding = String(); |
| } |
| |
| void FrameLoader::receivedFirstData() |
| { |
| begin(m_workingURL, false); |
| |
| dispatchDidCommitLoad(); |
| dispatchWindowObjectAvailable(); |
| |
| String ptitle = m_documentLoader->title(); |
| // If we have a title let the WebView know about it. |
| if (!ptitle.isNull()) |
| m_client->dispatchDidReceiveTitle(ptitle); |
| |
| m_frame->document()->docLoader()->setCachePolicy(m_cachePolicy); |
| m_workingURL = KURL(); |
| |
| double delay; |
| String URL; |
| if (!m_documentLoader) |
| return; |
| if (!parseHTTPRefresh(m_documentLoader->response().httpHeaderField("Refresh"), false, delay, URL)) |
| return; |
| |
| if (URL.isEmpty()) |
| URL = m_URL.url(); |
| else |
| URL = m_frame->document()->completeURL(URL); |
| |
| scheduleHTTPRedirection(delay, URL); |
| } |
| |
| const String& FrameLoader::responseMIMEType() const |
| { |
| return m_responseMIMEType; |
| } |
| |
| void FrameLoader::setResponseMIMEType(const String& type) |
| { |
| m_responseMIMEType = type; |
| } |
| |
| void FrameLoader::begin() |
| { |
| begin(KURL()); |
| } |
| |
| void FrameLoader::begin(const KURL& url, bool dispatch) |
| { |
| clear(); |
| if (dispatch) |
| dispatchWindowObjectAvailable(); |
| |
| m_needsClear = true; |
| m_shouldClearWindowProperties = true; |
| m_isComplete = false; |
| m_didCallImplicitClose = false; |
| m_isLoadingMainResource = true; |
| |
| KURL ref(url); |
| ref.setUser(DeprecatedString()); |
| ref.setPass(DeprecatedString()); |
| ref.setRef(DeprecatedString()); |
| m_outgoingReferrer = ref.url(); |
| m_URL = url; |
| KURL baseurl; |
| |
| if (!m_URL.isEmpty()) |
| baseurl = m_URL; |
| |
| RefPtr<Document> document = DOMImplementation::instance()->createDocument(m_responseMIMEType, m_frame, m_frame->inViewSourceMode()); |
| m_frame->setDocument(document); |
| |
| document->setURL(m_URL.url()); |
| // We prefer m_baseURL over m_URL because m_URL changes when we are |
| // about to load a new page. |
| document->setBaseURL(baseurl.url()); |
| if (m_decoder) |
| document->setDecoder(m_decoder.get()); |
| |
| updatePolicyBaseURL(); |
| |
| Settings* settings = document->settings(); |
| document->docLoader()->setAutoLoadImages(settings && settings->loadsImagesAutomatically()); |
| KURL userStyleSheet = settings ? settings->userStyleSheetLocation() : KURL(); |
| if (!userStyleSheet.isEmpty()) |
| m_frame->setUserStyleSheetLocation(userStyleSheet); |
| |
| restoreDocumentState(); |
| |
| document->implicitOpen(); |
| |
| if (m_frame->view()) |
| m_frame->view()->resizeContents(0, 0); |
| |
| #if USE(LOW_BANDWIDTH_DISPLAY) |
| // Low bandwidth display is a first pass display without external resources |
| // used to give an instant visual feedback. We currently only enable it for |
| // HTML documents in the top frame. |
| if (document->isHTMLDocument() && !m_frame->tree()->parent() && m_useLowBandwidthDisplay) { |
| m_pendingSourceInLowBandwidthDisplay = String(); |
| m_finishedParsingDuringLowBandwidthDisplay = false; |
| m_needToSwitchOutLowBandwidthDisplay = false; |
| document->setLowBandwidthDisplay(true); |
| } |
| #endif |
| } |
| |
| void FrameLoader::write(const char* str, int len, bool flush) |
| { |
| if (len == 0 && !flush) |
| return; |
| |
| if (len == -1) |
| len = strlen(str); |
| |
| Tokenizer* tokenizer = m_frame->document()->tokenizer(); |
| if (tokenizer && tokenizer->wantsRawData()) { |
| if (len > 0) |
| tokenizer->writeRawData(str, len); |
| return; |
| } |
| |
| if (!m_decoder) { |
| Settings* settings = m_frame->settings(); |
| m_decoder = new TextResourceDecoder(m_responseMIMEType, settings ? settings->defaultTextEncodingName() : String()); |
| if (!m_encoding.isNull()) |
| m_decoder->setEncoding(m_encoding, |
| m_encodingWasChosenByUser ? TextResourceDecoder::UserChosenEncoding : TextResourceDecoder::EncodingFromHTTPHeader); |
| if (m_frame->document()) |
| m_frame->document()->setDecoder(m_decoder.get()); |
| } |
| |
| String decoded = m_decoder->decode(str, len); |
| if (flush) |
| decoded += m_decoder->flush(); |
| if (decoded.isEmpty()) |
| return; |
| |
| #if USE(LOW_BANDWIDTH_DISPLAY) |
| if (m_frame->document()->inLowBandwidthDisplay()) |
| m_pendingSourceInLowBandwidthDisplay.append(decoded); |
| else // reset policy which is changed in switchOutLowBandwidthDisplayIfReady() |
| m_frame->document()->docLoader()->setCachePolicy(m_cachePolicy); |
| #endif |
| |
| if (!m_receivedData) { |
| m_receivedData = true; |
| m_frame->document()->determineParseMode(decoded); |
| if (m_decoder->encoding().usesVisualOrdering()) |
| m_frame->document()->setVisuallyOrdered(); |
| m_frame->document()->recalcStyle(Node::Force); |
| } |
| |
| if (tokenizer) { |
| ASSERT(!tokenizer->wantsRawData()); |
| tokenizer->write(decoded, true); |
| } |
| } |
| |
| void FrameLoader::write(const String& str) |
| { |
| if (str.isNull()) |
| return; |
| |
| if (!m_receivedData) { |
| m_receivedData = true; |
| m_frame->document()->setParseMode(Document::Strict); |
| } |
| |
| if (Tokenizer* tokenizer = m_frame->document()->tokenizer()) |
| tokenizer->write(str, true); |
| } |
| |
| void FrameLoader::end() |
| { |
| m_isLoadingMainResource = false; |
| endIfNotLoadingMainResource(); |
| } |
| |
| void FrameLoader::endIfNotLoadingMainResource() |
| { |
| if (m_isLoadingMainResource) |
| return; |
| |
| // http://bugs.webkit.org/show_bug.cgi?id=10854 |
| // The frame's last ref may be removed and it can be deleted by checkCompleted(), |
| // so we'll add a protective refcount |
| RefPtr<Frame> protector(m_frame); |
| |
| // make sure nothing's left in there |
| if (m_frame->document()) { |
| write(0, 0, true); |
| m_frame->document()->finishParsing(); |
| #if USE(LOW_BANDWIDTH_DISPLAY) |
| if (m_frame->document()->inLowBandwidthDisplay()) { |
| m_finishedParsingDuringLowBandwidthDisplay = true; |
| switchOutLowBandwidthDisplayIfReady(); |
| } |
| #endif |
| } else |
| // WebKit partially uses WebCore when loading non-HTML docs. In these cases doc==nil, but |
| // WebCore is enough involved that we need to checkCompleted() in order for m_bComplete to |
| // become true. An example is when a subframe is a pure text doc, and that subframe is the |
| // last one to complete. |
| checkCompleted(); |
| |
| if (m_documentLoader && !m_documentLoader->isLoadingFromCachedPage()) |
| startIconLoader(); |
| } |
| |
| void FrameLoader::startIconLoader() |
| { |
| // FIXME: We kick off the icon loader when the frame is done receiving its main resource. |
| // But we should instead do it when we're done parsing the head element. |
| if (!isLoadingMainFrame()) |
| return; |
| |
| if (!iconDatabase() || !iconDatabase()->enabled()) |
| return; |
| |
| KURL url(iconURL()); |
| String urlString(url.url()); |
| if (urlString.isEmpty()) |
| return; |
| |
| // If we already have an unexpired icon, we won't kick off a load but we *will* map the appropriate URLs to it |
| if (iconDatabase()->hasEntryForIconURL(urlString) && loadType() != FrameLoadTypeReload && !iconDatabase()->isIconExpiredForIconURL(urlString)) { |
| LOG(IconDatabase, "FrameLoader::startIconLoader() - Committing iconURL %s to database", urlString.ascii().data()); |
| commitIconURLToIconDatabase(url); |
| return; |
| } |
| |
| if (!m_iconLoader) |
| m_iconLoader.set(IconLoader::create(m_frame).release()); |
| m_iconLoader->startLoading(); |
| } |
| |
| bool FrameLoader::restrictAccessToLocal() |
| { |
| return m_restrictAccessToLocal; |
| } |
| |
| void FrameLoader::setRestrictAccessToLocal(bool access) |
| { |
| m_restrictAccessToLocal = access; |
| } |
| |
| static HashSet<String, CaseInsensitiveHash<String> >& localSchemes() |
| { |
| static HashSet<String, CaseInsensitiveHash<String> > localSchemes; |
| |
| if (localSchemes.isEmpty()) { |
| localSchemes.add("file"); |
| localSchemes.add("applewebdata"); |
| } |
| |
| return localSchemes; |
| } |
| |
| void FrameLoader::commitIconURLToIconDatabase(const KURL& icon) |
| { |
| ASSERT(iconDatabase()); |
| LOG(IconDatabase, "Committing iconURL %s to database for pageURLs %s and %s", icon.url().ascii(), m_URL.url().ascii(), originalRequestURL().url().ascii()); |
| iconDatabase()->setIconURLForPageURL(icon.url(), m_URL.url()); |
| iconDatabase()->setIconURLForPageURL(icon.url(), originalRequestURL().url()); |
| } |
| |
| void FrameLoader::restoreDocumentState() |
| { |
| Document* doc = m_frame->document(); |
| if (!doc) |
| return; |
| |
| HistoryItem* itemToRestore = 0; |
| |
| switch (loadType()) { |
| case FrameLoadTypeReload: |
| case FrameLoadTypeReloadAllowingStaleData: |
| case FrameLoadTypeSame: |
| case FrameLoadTypeReplace: |
| break; |
| case FrameLoadTypeBack: |
| case FrameLoadTypeForward: |
| case FrameLoadTypeIndexedBackForward: |
| case FrameLoadTypeRedirectWithLockedHistory: |
| case FrameLoadTypeStandard: |
| itemToRestore = m_currentHistoryItem.get(); |
| } |
| |
| if (!itemToRestore) |
| return; |
| |
| doc->setStateForNewFormElements(itemToRestore->documentState()); |
| } |
| |
| void FrameLoader::gotoAnchor() |
| { |
| // If our URL has no ref, then we have no place we need to jump to. |
| // OTOH if css target was set previously, we want to set it to 0, recalc |
| // and possibly repaint because :target pseudo class may have been |
| // set(See bug 11321) |
| if (!m_URL.hasRef() && |
| !(m_frame->document() && m_frame->document()->getCSSTarget())) |
| return; |
| |
| DeprecatedString ref = m_URL.encodedHtmlRef(); |
| if (!gotoAnchor(ref)) { |
| // Can't use htmlRef() here because it doesn't know which encoding to use to decode. |
| // Decoding here has to match encoding in completeURL, which means it has to use the |
| // page's encoding rather than UTF-8. |
| if (m_decoder) |
| gotoAnchor(KURL::decode_string(ref, m_decoder->encoding())); |
| } |
| } |
| |
| void FrameLoader::finishedParsing() |
| { |
| if (m_creatingInitialEmptyDocument) |
| return; |
| |
| // This can be called from the Frame's destructor, in which case we shouldn't protect ourselves |
| // because doing so will cause us to re-enter the destructor when protector goes out of scope. |
| RefPtr<Frame> protector = m_frame->refCount() > 0 ? m_frame : 0; |
| |
| checkCompleted(); |
| |
| if (!m_frame->view()) |
| return; // We are being destroyed by something checkCompleted called. |
| |
| // Check if the scrollbars are really needed for the content. |
| // If not, remove them, relayout, and repaint. |
| m_frame->view()->restoreScrollbar(); |
| |
| m_client->dispatchDidFinishDocumentLoad(); |
| |
| gotoAnchor(); |
| } |
| |
| void FrameLoader::loadDone() |
| { |
| if (m_frame->document()) |
| checkCompleted(); |
| } |
| |
| void FrameLoader::checkCompleted() |
| { |
| // Any frame that hasn't completed yet? |
| for (Frame* child = m_frame->tree()->firstChild(); child; child = child->tree()->nextSibling()) |
| if (!child->loader()->m_isComplete) |
| return; |
| |
| // Have we completed before? |
| if (m_isComplete) |
| return; |
| |
| // Are we still parsing? |
| if (m_frame->document() && m_frame->document()->parsing()) |
| return; |
| |
| // Still waiting for images/scripts? |
| if (m_frame->document()) |
| if (numRequests(m_frame->document())) |
| return; |
| |
| #if USE(LOW_BANDWIDTH_DISPLAY) |
| // as switch will be called, don't complete yet |
| if (m_frame->document() && m_frame->document()->inLowBandwidthDisplay() && m_needToSwitchOutLowBandwidthDisplay) |
| return; |
| #endif |
| |
| // OK, completed. |
| m_isComplete = true; |
| |
| RefPtr<Frame> protect(m_frame); |
| checkCallImplicitClose(); // if we didn't do it before |
| |
| // Do not start a redirection timer for subframes here. |
| // That is deferred until the parent is completed. |
| if (m_scheduledRedirection && !m_frame->tree()->parent()) |
| startRedirectionTimer(); |
| |
| completed(); |
| if (m_frame->page()) |
| checkLoadComplete(); |
| } |
| |
| void FrameLoader::checkCompletedTimerFired(Timer<FrameLoader>*) |
| { |
| checkCompleted(); |
| } |
| |
| void FrameLoader::scheduleCheckCompleted() |
| { |
| if (!m_checkCompletedTimer.isActive()) |
| m_checkCompletedTimer.startOneShot(0); |
| } |
| |
| void FrameLoader::checkLoadCompleteTimerFired(Timer<FrameLoader>*) |
| { |
| if (m_frame->page()) |
| checkLoadComplete(); |
| } |
| |
| void FrameLoader::scheduleCheckLoadComplete() |
| { |
| if (!m_checkLoadCompleteTimer.isActive()) |
| m_checkLoadCompleteTimer.startOneShot(0); |
| } |
| |
| void FrameLoader::checkCallImplicitClose() |
| { |
| if (m_didCallImplicitClose || !m_frame->document() || m_frame->document()->parsing()) |
| return; |
| |
| for (Frame* child = m_frame->tree()->firstChild(); child; child = child->tree()->nextSibling()) |
| if (!child->loader()->m_isComplete) // still got a frame running -> too early |
| return; |
| |
| // All frames completed -> set their domain to the frameset's domain |
| // This must only be done when loading the frameset initially (#22039), |
| // not when following a link in a frame (#44162). |
| if (m_frame->document()) { |
| String domain = m_frame->document()->domain(); |
| for (Frame* child = m_frame->tree()->firstChild(); child; child = child->tree()->nextSibling()) |
| if (child->document()) |
| child->document()->setDomainInternal(domain); |
| } |
| |
| m_didCallImplicitClose = true; |
| m_wasUnloadEventEmitted = false; |
| if (m_frame->document()) |
| m_frame->document()->implicitClose(); |
| } |
| |
| KURL FrameLoader::baseURL() const |
| { |
| ASSERT(m_frame->document()); |
| return m_frame->document()->baseURL(); |
| } |
| |
| String FrameLoader::baseTarget() const |
| { |
| ASSERT(m_frame->document()); |
| return m_frame->document()->baseTarget(); |
| } |
| |
| KURL FrameLoader::completeURL(const String& url) |
| { |
| ASSERT(m_frame->document()); |
| return m_frame->document()->completeURL(url).deprecatedString(); |
| } |
| |
| void FrameLoader::scheduleHTTPRedirection(double delay, const String& url) |
| { |
| if (delay < 0 || delay > INT_MAX / 1000) |
| return; |
| |
| // We want a new history item if the refresh timeout is > 1 second. |
| if (!m_scheduledRedirection || delay <= m_scheduledRedirection->delay) |
| scheduleRedirection(new ScheduledRedirection(delay, url, delay <= 1, false)); |
| } |
| |
| void FrameLoader::scheduleLocationChange(const String& url, const String& referrer, bool lockHistory, bool wasUserGesture) |
| { |
| // If the URL we're going to navigate to is the same as the current one, except for the |
| // fragment part, we don't need to schedule the location change. |
| KURL u(url.deprecatedString()); |
| if (u.hasRef() && equalIgnoringRef(m_URL, u)) { |
| changeLocation(url, referrer, lockHistory, wasUserGesture); |
| return; |
| } |
| |
| // Handle a location change of a page with no document as a special case. |
| // This may happen when a frame changes the location of another frame. |
| bool duringLoad = !m_committedFirstRealDocumentLoad; |
| |
| // If a redirect was scheduled during a load, then stop the current load. |
| // Otherwise when the current load transitions from a provisional to a |
| // committed state, pending redirects may be cancelled. |
| if (duringLoad) { |
| if (m_provisionalDocumentLoader) |
| m_provisionalDocumentLoader->stopLoading(); |
| stopLoading(true); |
| } |
| |
| ScheduledRedirection::Type type = duringLoad |
| ? ScheduledRedirection::locationChangeDuringLoad : ScheduledRedirection::locationChange; |
| scheduleRedirection(new ScheduledRedirection(type, url, referrer, lockHistory, wasUserGesture)); |
| } |
| |
| void FrameLoader::scheduleRefresh(bool wasUserGesture) |
| { |
| // Handle a location change of a page with no document as a special case. |
| // This may happen when a frame requests a refresh of another frame. |
| bool duringLoad = !m_frame->document(); |
| |
| // If a refresh was scheduled during a load, then stop the current load. |
| // Otherwise when the current load transitions from a provisional to a |
| // committed state, pending redirects may be cancelled. |
| if (duringLoad) |
| stopLoading(true); |
| |
| ScheduledRedirection::Type type = duringLoad |
| ? ScheduledRedirection::locationChangeDuringLoad : ScheduledRedirection::locationChange; |
| scheduleRedirection(new ScheduledRedirection(type, m_URL.url(), m_outgoingReferrer, true, wasUserGesture)); |
| m_cachePolicy = CachePolicyRefresh; |
| } |
| |
| bool FrameLoader::isScheduledLocationChangePending() const |
| { |
| if (!m_scheduledRedirection) |
| return false; |
| switch (m_scheduledRedirection->type) { |
| case ScheduledRedirection::redirection: |
| return false; |
| case ScheduledRedirection::historyNavigation: |
| case ScheduledRedirection::locationChange: |
| case ScheduledRedirection::locationChangeDuringLoad: |
| return true; |
| } |
| ASSERT_NOT_REACHED(); |
| return false; |
| } |
| |
| void FrameLoader::scheduleHistoryNavigation(int steps) |
| { |
| // navigation will always be allowed in the 0 steps case, which is OK because |
| // that's supposed to force a reload. |
| if (!canGoBackOrForward(steps)) { |
| cancelRedirection(); |
| return; |
| } |
| |
| // If the steps to navigate is not zero (which needs to force a reload), and if the URL we're going to navigate |
| // to is the same as the current one, except for the fragment part, we don't need to schedule the navigation. |
| if (steps != 0 && equalIgnoringRef(m_URL, historyURL(steps))) { |
| goBackOrForward(steps); |
| return; |
| } |
| |
| scheduleRedirection(new ScheduledRedirection(steps)); |
| } |
| |
| void FrameLoader::goBackOrForward(int distance) |
| { |
| if (distance == 0) |
| return; |
| |
| Page* page = m_frame->page(); |
| if (!page) |
| return; |
| BackForwardList* list = page->backForwardList(); |
| if (!list) |
| return; |
| |
| HistoryItem* item = list->itemAtIndex(distance); |
| if (!item) { |
| if (distance > 0) { |
| int forwardListCount = list->forwardListCount(); |
| if (forwardListCount > 0) |
| item = list->itemAtIndex(forwardListCount); |
| } else { |
| int backListCount = list->forwardListCount(); |
| if (backListCount > 0) |
| item = list->itemAtIndex(-backListCount); |
| } |
| } |
| if (item) |
| page->goToItem(item, FrameLoadTypeIndexedBackForward); |
| } |
| |
| void FrameLoader::redirectionTimerFired(Timer<FrameLoader>*) |
| { |
| OwnPtr<ScheduledRedirection> redirection(m_scheduledRedirection.release()); |
| |
| switch (redirection->type) { |
| case ScheduledRedirection::redirection: |
| case ScheduledRedirection::locationChange: |
| case ScheduledRedirection::locationChangeDuringLoad: |
| changeLocation(redirection->URL, redirection->referrer, |
| redirection->lockHistory, redirection->wasUserGesture); |
| return; |
| case ScheduledRedirection::historyNavigation: |
| if (redirection->historySteps == 0) { |
| // Special case for go(0) from a frame -> reload only the frame |
| urlSelected(m_URL, "", 0, redirection->lockHistory, redirection->wasUserGesture); |
| return; |
| } |
| // go(i!=0) from a frame navigates into the history of the frame only, |
| // in both IE and NS (but not in Mozilla). We can't easily do that. |
| goBackOrForward(redirection->historySteps); |
| return; |
| } |
| ASSERT_NOT_REACHED(); |
| } |
| |
| String FrameLoader::encoding() const |
| { |
| if (m_encodingWasChosenByUser && !m_encoding.isEmpty()) |
| return m_encoding; |
| if (m_decoder && m_decoder->encoding().isValid()) |
| return m_decoder->encoding().name(); |
| Settings* settings = m_frame->settings(); |
| return settings ? settings->defaultTextEncodingName() : String(); |
| } |
| |
| bool FrameLoader::gotoAnchor(const String& name) |
| { |
| ASSERT(m_frame->document()); |
| |
| if (!m_frame->document()->haveStylesheetsLoaded()) { |
| m_frame->document()->setGotoAnchorNeededAfterStylesheetsLoad(true); |
| return false; |
| } |
| |
| m_frame->document()->setGotoAnchorNeededAfterStylesheetsLoad(false); |
| |
| Node* anchorNode = m_frame->document()->getElementById(AtomicString(name)); |
| if (!anchorNode) |
| anchorNode = m_frame->document()->anchors()->namedItem(name, !m_frame->document()->inCompatMode()); |
| |
| m_frame->document()->setCSSTarget(anchorNode); // Setting to null will clear the current target. |
| |
| // Implement the rule that "" and "top" both mean top of page as in other browsers. |
| if (!anchorNode && !(name.isEmpty() || equalIgnoringCase(name, "top"))) |
| return false; |
| |
| // We need to update the layout before scrolling, otherwise we could |
| // really mess things up if an anchor scroll comes at a bad moment. |
| if (m_frame->document()) { |
| m_frame->document()->updateRendering(); |
| // Only do a layout if changes have occurred that make it necessary. |
| if (m_frame->view() && m_frame->document()->renderer() && m_frame->document()->renderer()->needsLayout()) |
| m_frame->view()->layout(); |
| } |
| |
| // Scroll nested layers and frames to reveal the anchor. |
| // Align to the top and to the closest side (this matches other browsers). |
| RenderObject* renderer; |
| IntRect rect; |
| if (!anchorNode) |
| renderer = m_frame->document()->renderer(); // top of document |
| else { |
| renderer = anchorNode->renderer(); |
| rect = anchorNode->getRect(); |
| } |
| if (renderer) |
| renderer->enclosingLayer()->scrollRectToVisible(rect, RenderLayer::gAlignToEdgeIfNeeded, RenderLayer::gAlignTopAlways); |
| |
| return true; |
| } |
| |
| bool FrameLoader::requestObject(RenderPart* renderer, const String& url, const AtomicString& frameName, |
| const String& mimeType, const Vector<String>& paramNames, const Vector<String>& paramValues) |
| { |
| if (url.isEmpty() && mimeType.isEmpty()) |
| return true; |
| |
| #if USE(LOW_BANDWIDTH_DISPLAY) |
| // don't care object during low bandwidth display |
| if (frame()->document()->inLowBandwidthDisplay()) { |
| m_needToSwitchOutLowBandwidthDisplay = true; |
| return false; |
| } |
| #endif |
| |
| KURL completedURL; |
| if (!url.isEmpty()) |
| completedURL = completeURL(url); |
| |
| bool useFallback; |
| if (shouldUsePlugin(completedURL, mimeType, renderer->hasFallbackContent(), useFallback)) { |
| Settings* settings = m_frame->settings(); |
| if (!settings || !settings->arePluginsEnabled() || |
| (!settings->isJavaEnabled() && MIMETypeRegistry::isJavaAppletMIMEType(mimeType))) |
| return false; |
| return loadPlugin(renderer, completedURL, mimeType, paramNames, paramValues, useFallback); |
| } |
| |
| ASSERT(renderer->node()->hasTagName(objectTag) || renderer->node()->hasTagName(embedTag)); |
| HTMLPlugInElement* element = static_cast<HTMLPlugInElement*>(renderer->node()); |
| |
| AtomicString uniqueFrameName = m_frame->tree()->uniqueChildName(frameName); |
| element->setFrameName(uniqueFrameName); |
| |
| // FIXME: OK to always make a new frame? When does the old frame get removed? |
| return loadSubframe(element, completedURL, uniqueFrameName, m_outgoingReferrer); |
| } |
| |
| bool FrameLoader::shouldUsePlugin(const KURL& url, const String& mimeType, bool hasFallback, bool& useFallback) |
| { |
| ObjectContentType objectType = m_client->objectContentType(url, mimeType); |
| // If an object's content can't be handled and it has no fallback, let |
| // it be handled as a plugin to show the broken plugin icon. |
| useFallback = objectType == ObjectContentNone && hasFallback; |
| return objectType == ObjectContentNone || objectType == ObjectContentNetscapePlugin || objectType == ObjectContentOtherPlugin; |
| } |
| |
| bool FrameLoader::loadPlugin(RenderPart* renderer, const KURL& url, const String& mimeType, |
| const Vector<String>& paramNames, const Vector<String>& paramValues, bool useFallback) |
| { |
| Widget* widget = 0; |
| |
| if (renderer && !useFallback) { |
| Element* pluginElement = 0; |
| if (renderer->node() && renderer->node()->isElementNode()) |
| pluginElement = static_cast<Element*>(renderer->node()); |
| |
| if (!canLoad(url, frame()->document())) { |
| FrameLoader::reportLocalLoadFailed(m_frame->page(), url.url()); |
| return false; |
| } |
| |
| widget = m_client->createPlugin(IntSize(renderer->contentWidth(), renderer->contentHeight()), |
| pluginElement, url, paramNames, paramValues, mimeType, |
| m_frame->document()->isPluginDocument()); |
| if (widget) { |
| renderer->setWidget(widget); |
| m_containsPlugIns = true; |
| } |
| } |
| |
| return widget != 0; |
| } |
| |
| void FrameLoader::clearRecordedFormValues() |
| { |
| m_formAboutToBeSubmitted = 0; |
| m_formValuesAboutToBeSubmitted.clear(); |
| } |
| |
| void FrameLoader::recordFormValue(const String& name, const String& value, PassRefPtr<HTMLFormElement> element) |
| { |
| m_formAboutToBeSubmitted = element; |
| m_formValuesAboutToBeSubmitted.set(name, value); |
| } |
| |
| void FrameLoader::parentCompleted() |
| { |
| if (m_scheduledRedirection && !m_redirectionTimer.isActive()) |
| startRedirectionTimer(); |
| } |
| |
| String FrameLoader::outgoingReferrer() const |
| { |
| return m_outgoingReferrer; |
| } |
| |
| Frame* FrameLoader::opener() |
| { |
| return m_opener; |
| } |
| |
| void FrameLoader::setOpener(Frame* opener) |
| { |
| if (m_opener) |
| m_opener->loader()->m_openedFrames.remove(m_frame); |
| if (opener) |
| opener->loader()->m_openedFrames.add(m_frame); |
| m_opener = opener; |
| |
| if (m_frame->document()) |
| m_frame->document()->initSecurityPolicyURL(); |
| } |
| |
| bool FrameLoader::openedByDOM() const |
| { |
| return m_openedByDOM; |
| } |
| |
| void FrameLoader::setOpenedByDOM() |
| { |
| m_openedByDOM = true; |
| } |
| |
| void FrameLoader::handleFallbackContent() |
| { |
| HTMLFrameOwnerElement* owner = m_frame->ownerElement(); |
| if (!owner || !owner->hasTagName(objectTag)) |
| return; |
| static_cast<HTMLObjectElement*>(owner)->renderFallbackContent(); |
| } |
| |
| void FrameLoader::provisionalLoadStarted() |
| { |
| m_firstLayoutDone = false; |
| cancelRedirection(true); |
| m_client->provisionalLoadStarted(); |
| |
| if (canCachePage() && m_client->canCachePage() && !m_currentHistoryItem->isInPageCache()) |
| cachePageForHistoryItem(m_currentHistoryItem.get()); |
| } |
| |
| bool FrameLoader::userGestureHint() |
| { |
| Frame* rootFrame = m_frame; |
| while (rootFrame->tree()->parent()) |
| rootFrame = rootFrame->tree()->parent(); |
| |
| if (rootFrame->scriptProxy()) |
| return rootFrame->scriptProxy()->interpreter()->wasRunByUserGesture(); |
| |
| return true; // If JavaScript is disabled, a user gesture must have initiated the navigation |
| } |
| |
| void FrameLoader::didNotOpenURL(const KURL& URL) |
| { |
| if (m_submittedFormURL == URL) |
| m_submittedFormURL = KURL(); |
| } |
| |
| void FrameLoader::resetMultipleFormSubmissionProtection() |
| { |
| m_submittedFormURL = KURL(); |
| } |
| |
| void FrameLoader::setEncoding(const String& name, bool userChosen) |
| { |
| if (!m_workingURL.isEmpty()) |
| receivedFirstData(); |
| m_encoding = name; |
| m_encodingWasChosenByUser = userChosen; |
| } |
| |
| void FrameLoader::addData(const char* bytes, int length) |
| { |
| ASSERT(m_workingURL.isEmpty()); |
| ASSERT(m_frame->document()); |
| ASSERT(m_frame->document()->parsing()); |
| write(bytes, length); |
| } |
| |
| bool FrameLoader::canCachePage() |
| { |
| // Cache the page, if possible. |
| // Don't write to the cache if in the middle of a redirect, since we will want to |
| // store the final page we end up on. |
| // No point writing to the cache on a reload or loadSame, since we will just write |
| // over it again when we leave that page. |
| // FIXME: <rdar://problem/4886592> - We should work out the complexities of caching pages with frames as they |
| // are the most interesting pages on the web, and often those that would benefit the most from caching! |
| FrameLoadType loadType = this->loadType(); |
| |
| return m_documentLoader |
| && m_documentLoader->mainDocumentError().isNull() |
| && !m_frame->tree()->childCount() |
| && !m_frame->tree()->parent() |
| // FIXME: If we ever change this so that pages with plug-ins will be cached, |
| // we need to make sure that we don't cache pages that have outstanding NPObjects |
| // (objects created by the plug-in). Since there is no way to pause/resume a Netscape plug-in, |
| // they would need to be destroyed and then recreated, and there is no way that we can recreate |
| // the right NPObjects. See <rdar://problem/5197041> for more information. |
| && !m_containsPlugIns |
| && !m_URL.protocol().startsWith("https") |
| && m_frame->document() |
| && !m_frame->document()->applets()->length() |
| && !m_frame->document()->hasWindowEventListener(unloadEvent) |
| && m_frame->page() |
| && m_frame->page()->backForwardList()->enabled() |
| && m_frame->page()->backForwardList()->capacity() > 0 |
| && m_frame->page()->settings()->usesPageCache() |
| && m_currentHistoryItem |
| && !isQuickRedirectComing() |
| && loadType != FrameLoadTypeReload |
| && loadType != FrameLoadTypeReloadAllowingStaleData |
| && loadType != FrameLoadTypeSame |
| && !m_documentLoader->isLoadingInAPISense() |
| && !m_documentLoader->isStopping(); |
| } |
| |
| void FrameLoader::updatePolicyBaseURL() |
| { |
| if (m_frame->tree()->parent() && m_frame->tree()->parent()->document()) |
| setPolicyBaseURL(m_frame->tree()->parent()->document()->policyBaseURL()); |
| else |
| setPolicyBaseURL(m_URL.url()); |
| } |
| |
| void FrameLoader::setPolicyBaseURL(const String& s) |
| { |
| if (m_frame->document()) |
| m_frame->document()->setPolicyBaseURL(s); |
| for (Frame* child = m_frame->tree()->firstChild(); child; child = child->tree()->nextSibling()) |
| child->loader()->setPolicyBaseURL(s); |
| } |
| |
| // This does the same kind of work that FrameLoader::openURL does, except it relies on the fact |
| // that a higher level already checked that the URLs match and the scrolling is the right thing to do. |
| void FrameLoader::scrollToAnchor(const KURL& URL) |
| { |
| m_URL = URL; |
| started(); |
| |
| gotoAnchor(); |
| |
| // It's important to model this as a load that starts and immediately finishes. |
| // Otherwise, the parent frame may think we never finished loading. |
| m_isComplete = false; |
| checkCompleted(); |
| } |
| |
| bool FrameLoader::isComplete() const |
| { |
| return m_isComplete; |
| } |
| |
| void FrameLoader::scheduleRedirection(ScheduledRedirection* redirection) |
| { |
| stopRedirectionTimer(); |
| m_scheduledRedirection.set(redirection); |
| if (m_isComplete) |
| startRedirectionTimer(); |
| } |
| |
| void FrameLoader::startRedirectionTimer() |
| { |
| ASSERT(m_scheduledRedirection); |
| |
| m_redirectionTimer.stop(); |
| m_redirectionTimer.startOneShot(m_scheduledRedirection->delay); |
| |
| switch (m_scheduledRedirection->type) { |
| case ScheduledRedirection::redirection: |
| case ScheduledRedirection::locationChange: |
| case ScheduledRedirection::locationChangeDuringLoad: |
| clientRedirected(m_scheduledRedirection->URL.deprecatedString(), |
| m_scheduledRedirection->delay, |
| currentTime() + m_redirectionTimer.nextFireInterval(), |
| m_scheduledRedirection->lockHistory, |
| m_isExecutingJavaScriptFormAction); |
| return; |
| case ScheduledRedirection::historyNavigation: |
| // Don't report history navigations. |
| return; |
| } |
| ASSERT_NOT_REACHED(); |
| } |
| |
| void FrameLoader::stopRedirectionTimer() |
| { |
| if (!m_redirectionTimer.isActive()) |
| return; |
| |
| m_redirectionTimer.stop(); |
| |
| if (m_scheduledRedirection) { |
| switch (m_scheduledRedirection->type) { |
| case ScheduledRedirection::redirection: |
| case ScheduledRedirection::locationChange: |
| case ScheduledRedirection::locationChangeDuringLoad: |
| clientRedirectCancelledOrFinished(m_cancellingWithLoadInProgress); |
| return; |
| case ScheduledRedirection::historyNavigation: |
| // Don't report history navigations. |
| return; |
| } |
| ASSERT_NOT_REACHED(); |
| } |
| } |
| |
| void FrameLoader::completed() |
| { |
| RefPtr<Frame> protect(m_frame); |
| for (Frame* child = m_frame->tree()->firstChild(); child; child = child->tree()->nextSibling()) |
| child->loader()->parentCompleted(); |
| if (Frame* parent = m_frame->tree()->parent()) |
| parent->loader()->checkCompleted(); |
| submitFormAgain(); |
| } |
| |
| void FrameLoader::started() |
| { |
| for (Frame* frame = m_frame; frame; frame = frame->tree()->parent()) |
| frame->loader()->m_isComplete = false; |
| } |
| |
| bool FrameLoader::containsPlugins() const |
| { |
| return m_containsPlugIns; |
| } |
| |
| void FrameLoader::prepareForLoadStart() |
| { |
| if (Page* page = m_frame->page()) |
| page->progress()->progressStarted(m_frame); |
| m_client->dispatchDidStartProvisionalLoad(); |
| } |
| |
| void FrameLoader::setupForReplace() |
| { |
| setState(FrameStateProvisional); |
| m_provisionalDocumentLoader = m_documentLoader; |
| m_documentLoader = 0; |
| detachChildren(); |
| } |
| |
| void FrameLoader::setupForReplaceByMIMEType(const String& newMIMEType) |
| { |
| activeDocumentLoader()->setupForReplaceByMIMEType(newMIMEType); |
| } |
| |
| void FrameLoader::finalSetupForReplace(DocumentLoader* loader) |
| { |
| m_client->clearUnarchivingState(loader); |
| } |
| |
| void FrameLoader::load(const KURL& URL, Event* event) |
| { |
| load(ResourceRequest(URL), false, true, event, 0, HashMap<String, String>()); |
| } |
| |
| void FrameLoader::load(const FrameLoadRequest& request, bool lockHistory, bool userGesture, Event* event, |
| HTMLFormElement* submitForm, const HashMap<String, String>& formValues) |
| { |
| KURL url = request.resourceRequest().url(); |
| |
| String referrer; |
| String argsReferrer = request.resourceRequest().httpReferrer(); |
| if (!argsReferrer.isEmpty()) |
| referrer = argsReferrer; |
| else |
| referrer = m_outgoingReferrer; |
| |
| ASSERT(frame()->document()); |
| if (url.url().startsWith("file:", false)) { |
| if (!canLoad(url, frame()->document()) && !canLoad(url, referrer)) { |
| FrameLoader::reportLocalLoadFailed(m_frame->page(), url.url()); |
| return; |
| } |
| } |
| |
| if (shouldHideReferrer(url, referrer)) |
| referrer = String(); |
| |
| Frame* targetFrame = m_frame->tree()->find(request.frameName()); |
| if (!canTarget(targetFrame)) |
| return; |
| |
| if (request.resourceRequest().httpMethod() != "POST") { |
| FrameLoadType loadType; |
| if (request.resourceRequest().cachePolicy() == ReloadIgnoringCacheData) |
| loadType = FrameLoadTypeReload; |
| else if (lockHistory) |
| loadType = FrameLoadTypeRedirectWithLockedHistory; |
| else |
| loadType = FrameLoadTypeStandard; |
| |
| RefPtr<FormState> formState; |
| if (submitForm && !formValues.isEmpty()) |
| formState = FormState::create(submitForm, formValues, m_frame); |
| |
| load(request.resourceRequest().url(), referrer, loadType, |
| request.frameName(), event, formState.release()); |
| } else |
| post(request.resourceRequest().url(), referrer, request.frameName(), |
| request.resourceRequest().httpBody(), request.resourceRequest().httpContentType(), event, submitForm, formValues); |
| |
| if (targetFrame && targetFrame != m_frame) |
| if (Page* page = targetFrame->page()) |
| page->chrome()->focus(); |
| } |
| |
| void FrameLoader::load(const KURL& URL, const String& referrer, FrameLoadType newLoadType, |
| const String& frameName, Event* event, PassRefPtr<FormState> formState) |
| { |
| bool isFormSubmission = formState; |
| |
| ResourceRequest request(URL); |
| if (!referrer.isEmpty()) |
| request.setHTTPReferrer(referrer); |
| addExtraFieldsToRequest(request, true, event || isFormSubmission); |
| if (newLoadType == FrameLoadTypeReload) |
| request.setCachePolicy(ReloadIgnoringCacheData); |
| |
| ASSERT(newLoadType != FrameLoadTypeSame); |
| |
| NavigationAction action(URL, newLoadType, isFormSubmission, event); |
| |
| if (!frameName.isEmpty()) { |
| if (Frame* targetFrame = m_frame->tree()->find(frameName)) |
| targetFrame->loader()->load(URL, referrer, newLoadType, String(), event, formState); |
| else |
| checkNewWindowPolicy(action, request, formState, frameName); |
| return; |
| } |
| |
| RefPtr<DocumentLoader> oldDocumentLoader = m_documentLoader; |
| |
| bool sameURL = shouldTreatURLAsSameAsCurrent(URL); |
| |
| // Make sure to do scroll to anchor processing even if the URL is |
| // exactly the same so pages with '#' links and DHTML side effects |
| // work properly. |
| if (!isFormSubmission |
| && newLoadType != FrameLoadTypeReload |
| && newLoadType != FrameLoadTypeSame |
| && !shouldReload(URL, url()) |
| // We don't want to just scroll if a link from within a |
| // frameset is trying to reload the frameset into _top. |
| && !m_frame->isFrameSet()) { |
| |
| // Just do anchor navigation within the existing content. |
| |
| // We don't do this if we are submitting a form, explicitly reloading, |
| // currently displaying a frameset, or if the new URL does not have a fragment. |
| // These rules are based on what KHTML was doing in KHTMLPart::openURL. |
| |
| // FIXME: What about load types other than Standard and Reload? |
| |
| oldDocumentLoader->setTriggeringAction(action); |
| stopPolicyCheck(); |
| checkNavigationPolicy(request, oldDocumentLoader.get(), formState, |
| callContinueFragmentScrollAfterNavigationPolicy, this); |
| } else { |
| // must grab this now, since this load may stop the previous load and clear this flag |
| bool isRedirect = m_quickRedirectComing; |
| load(request, action, newLoadType, formState); |
| if (isRedirect) { |
| m_quickRedirectComing = false; |
| if (m_provisionalDocumentLoader) |
| m_provisionalDocumentLoader->setIsClientRedirect(true); |
| } else if (sameURL) |
| // Example of this case are sites that reload the same URL with a different cookie |
| // driving the generated content, or a master frame with links that drive a target |
| // frame, where the user has clicked on the same link repeatedly. |
| m_loadType = FrameLoadTypeSame; |
| } |
| } |
| |
| void FrameLoader::load(const ResourceRequest& request) |
| { |
| load(request, SubstituteData()); |
| } |
| |
| void FrameLoader::load(const ResourceRequest& request, const SubstituteData& substituteData) |
| { |
| if (m_inStopAllLoaders) |
| return; |
| |
| // FIXME: is this the right place to reset loadType? Perhaps this should be done after loading is finished or aborted. |
| m_loadType = FrameLoadTypeStandard; |
| load(m_client->createDocumentLoader(request, substituteData).get()); |
| } |
| |
| void FrameLoader::load(const ResourceRequest& request, const String& frameName) |
| { |
| if (frameName.isEmpty()) { |
| load(request); |
| return; |
| } |
| |
| Frame* frame = m_frame->tree()->find(frameName); |
| if (frame) { |
| frame->loader()->load(request); |
| return; |
| } |
| |
| checkNewWindowPolicy(NavigationAction(request.url(), NavigationTypeOther), request, 0, frameName); |
| } |
| |
| void FrameLoader::load(const ResourceRequest& request, const NavigationAction& action, FrameLoadType type, PassRefPtr<FormState> formState) |
| { |
| RefPtr<DocumentLoader> loader = m_client->createDocumentLoader(request, SubstituteData()); |
| |
| loader->setTriggeringAction(action); |
| if (m_documentLoader) |
| loader->setOverrideEncoding(m_documentLoader->overrideEncoding()); |
| |
| load(loader.get(), type, formState); |
| } |
| |
| void FrameLoader::load(DocumentLoader* newDocumentLoader) |
| { |
| ResourceRequest& r = newDocumentLoader->request(); |
| addExtraFieldsToRequest(r, true, false); |
| FrameLoadType type; |
| |
| if (shouldTreatURLAsSameAsCurrent(newDocumentLoader->originalRequest().url())) { |
| r.setCachePolicy(ReloadIgnoringCacheData); |
| type = FrameLoadTypeSame; |
| } else |
| type = FrameLoadTypeStandard; |
| |
| if (m_documentLoader) |
| newDocumentLoader->setOverrideEncoding(m_documentLoader->overrideEncoding()); |
| |
| // When we loading alternate content for an unreachable URL that we're |
| // visiting in the b/f list, we treat it as a reload so the b/f list |
| // is appropriately maintained. |
| if (shouldReloadToHandleUnreachableURL(newDocumentLoader)) { |
| ASSERT(type == FrameLoadTypeStandard); |
| type = FrameLoadTypeReload; |
| } |
| |
| load(newDocumentLoader, type, 0); |
| } |
| |
| void FrameLoader::load(DocumentLoader* loader, FrameLoadType type, PassRefPtr<FormState> formState) |
| { |
| ASSERT(m_client->hasWebView()); |
| |
| // Unfortunately the view must be non-nil, this is ultimately due |
| // to parser requiring a FrameView. We should fix this dependency. |
| |
| ASSERT(m_client->hasFrameView()); |
| |
| m_policyLoadType = type; |
| |
| if (Frame* parent = m_frame->tree()->parent()) |
| loader->setOverrideEncoding(parent->loader()->documentLoader()->overrideEncoding()); |
| |
| stopPolicyCheck(); |
| setPolicyDocumentLoader(loader); |
| |
| checkNavigationPolicy(loader->request(), loader, formState, |
| callContinueLoadAfterNavigationPolicy, this); |
| } |
| |
| // FIXME: It would be nice if we could collapse these into one or two functions. |
| bool FrameLoader::canLoad(const KURL& url, const String& referrer) |
| { |
| if (!shouldTreatURLAsLocal(url.url())) |
| return true; |
| |
| return shouldTreatURLAsLocal(referrer); |
| } |
| |
| bool FrameLoader::canLoad(const KURL& url, const Document* doc) |
| { |
| if (!shouldTreatURLAsLocal(url.url())) |
| return true; |
| |
| return doc && doc->isAllowedToLoadLocalResources(); |
| } |
| |
| bool FrameLoader::canLoad(const CachedResource& resource, const Document* doc) |
| { |
| if (!resource.treatAsLocal()) |
| return true; |
| |
| return doc && doc->isAllowedToLoadLocalResources(); |
| } |
| |
| void FrameLoader::reportLocalLoadFailed(const Page* page, const String& url) |
| { |
| ASSERT(!url.isEmpty()); |
| if (page) |
| page->chrome()->addMessageToConsole(JSMessageSource, ErrorMessageLevel, "Not allowed to load local resource: " + url, 0, String()); |
| } |
| |
| bool FrameLoader::shouldHideReferrer(const KURL& url, const String& referrer) |
| { |
| bool referrerIsSecureURL = referrer.startsWith("https:", false); |
| bool referrerIsWebURL = referrerIsSecureURL || referrer.startsWith("http:", false); |
| |
| if (!referrerIsWebURL) |
| return true; |
| |
| if (!referrerIsSecureURL) |
| return false; |
| |
| bool URLIsSecureURL = url.url().startsWith("https:", false); |
| |
| return !URLIsSecureURL; |
| } |
| |
| const ResourceRequest& FrameLoader::initialRequest() const |
| { |
| return activeDocumentLoader()->initialRequest(); |
| } |
| |
| void FrameLoader::receivedData(const char* data, int length) |
| { |
| activeDocumentLoader()->receivedData(data, length); |
| } |
| |
| bool FrameLoader::willUseArchive(ResourceLoader* loader, const ResourceRequest& request, const KURL& originalURL) const |
| { |
| return m_client->willUseArchive(loader, request, originalURL); |
| } |
| |
| void FrameLoader::handleUnimplementablePolicy(const ResourceError& error) |
| { |
| m_delegateIsHandlingUnimplementablePolicy = true; |
| m_client->dispatchUnableToImplementPolicy(error); |
| m_delegateIsHandlingUnimplementablePolicy = false; |
| } |
| |
| void FrameLoader::cannotShowMIMEType(const ResourceResponse& response) |
| { |
| handleUnimplementablePolicy(m_client->cannotShowMIMETypeError(response)); |
| } |
| |
| ResourceError FrameLoader::interruptionForPolicyChangeError(const ResourceRequest& request) |
| { |
| return m_client->interruptForPolicyChangeError(request); |
| } |
| |
| void FrameLoader::checkNavigationPolicy(const ResourceRequest& newRequest, NavigationPolicyDecisionFunction function, void* argument) |
| { |
| checkNavigationPolicy(newRequest, activeDocumentLoader(), 0, function, argument); |
| } |
| |
| void FrameLoader::checkContentPolicy(const String& MIMEType, ContentPolicyDecisionFunction function, void* argument) |
| { |
| ASSERT(activeDocumentLoader()); |
| |
| // Always show content with valid substitute data. |
| if (activeDocumentLoader()->substituteData().isValid()) { |
| function(argument, PolicyUse); |
| return; |
| } |
| |
| #if ENABLE(FTPDIR) |
| // Respect the hidden FTP Directory Listing pref so it can be tested even if the policy delegate might otherwise disallow it |
| Settings* settings = m_frame->settings(); |
| if (settings && settings->forceFTPDirectoryListings() && MIMEType == "application/x-ftp-directory") { |
| function(argument, PolicyUse); |
| return; |
| } |
| #endif |
| |
| m_policyCheck.set(function, argument); |
| m_client->dispatchDecidePolicyForMIMEType(&FrameLoader::continueAfterContentPolicy, |
| MIMEType, activeDocumentLoader()->request()); |
| } |
| |
| bool FrameLoader::shouldReloadToHandleUnreachableURL(DocumentLoader* docLoader) |
| { |
| KURL unreachableURL = docLoader->unreachableURL(); |
| |
| if (unreachableURL.isEmpty()) |
| return false; |
| |
| if (!isBackForwardLoadType(m_policyLoadType)) |
| return false; |
| |
| // We only treat unreachableURLs specially during the delegate callbacks |
| // for provisional load errors and navigation policy decisions. The former |
| // case handles well-formed URLs that can't be loaded, and the latter |
| // case handles malformed URLs and unknown schemes. Loading alternate content |
| // at other times behaves like a standard load. |
| DocumentLoader* compareDocumentLoader = 0; |
| if (m_delegateIsDecidingNavigationPolicy || m_delegateIsHandlingUnimplementablePolicy) |
| compareDocumentLoader = m_policyDocumentLoader.get(); |
| else if (m_delegateIsHandlingProvisionalLoadError) |
| compareDocumentLoader = m_provisionalDocumentLoader.get(); |
| |
| return compareDocumentLoader && unreachableURL == compareDocumentLoader->request().url(); |
| } |
| |
| void FrameLoader::reloadAllowingStaleData(const String& encoding) |
| { |
| if (!m_documentLoader) |
| return; |
| |
| ResourceRequest request = m_documentLoader->request(); |
| KURL unreachableURL = m_documentLoader->unreachableURL(); |
| if (!unreachableURL.isEmpty()) |
| request.setURL(unreachableURL); |
| |
| request.setCachePolicy(ReturnCacheDataElseLoad); |
| |
| RefPtr<DocumentLoader> loader = m_client->createDocumentLoader(request, SubstituteData()); |
| setPolicyDocumentLoader(loader.get()); |
| |
| loader->setOverrideEncoding(encoding); |
| |
| load(loader.get(), FrameLoadTypeReloadAllowingStaleData, 0); |
| } |
| |
| void FrameLoader::reload() |
| { |
| if (!m_documentLoader) |
| return; |
| |
| ResourceRequest& initialRequest = m_documentLoader->request(); |
| |
| // If a window is created by javascript, its main frame can have an empty but non-nil URL. |
| // Reloading in this case will lose the current contents (see 4151001). |
| if (initialRequest.url().isEmpty()) |
| return; |
| |
| // Replace error-page URL with the URL we were trying to reach. |
| KURL unreachableURL = m_documentLoader->unreachableURL(); |
| if (!unreachableURL.isEmpty()) |
| initialRequest = ResourceRequest(unreachableURL); |
| |
| RefPtr<DocumentLoader> loader = m_client->createDocumentLoader(initialRequest, SubstituteData()); |
| |
| ResourceRequest& request = loader->request(); |
| |
| request.setCachePolicy(ReloadIgnoringCacheData); |
| request.setHTTPHeaderField("Cache-Control", "max-age=0"); |
| |
| // If we're about to re-post, set up action so the application can warn the user. |
| if (request.httpMethod() == "POST") |
| loader->setTriggeringAction(NavigationAction(request.url(), NavigationTypeFormResubmitted)); |
| |
| loader->setOverrideEncoding(m_documentLoader->overrideEncoding()); |
| |
| load(loader.get(), FrameLoadTypeReload, 0); |
| } |
| |
| bool FrameLoader::canTarget(Frame* target) const |
| { |
| // This function prevents this exploit: |
| // <rdar://problem/3715785> multiple frame injection vulnerability reported by Secunia, affects almost all browsers |
| |
| // Allow if there is no specific target. |
| if (!target) |
| return true; |
| |
| // Allow navigation within the same page/frameset. |
| if (m_frame->page() == target->page()) |
| return true; |
| |
| // Allow if the request is made from a local file. |
| ASSERT(m_frame->document()); |
| String domain = m_frame->document()->domain(); |
| if (domain.isEmpty()) |
| return true; |
| |
| // Allow if target is an entire window (top level frame of a window). |
| Frame* parent = target->tree()->parent(); |
| if (!parent) |
| return true; |
| |
| // Allow if the domain of the parent of the targeted frame equals this domain. |
| String parentDomain; |
| if (Document* parentDocument = parent->document()) |
| parentDomain = parentDocument->domain(); |
| return equalIgnoringCase(parentDomain, domain); |
| } |
| |
| void FrameLoader::stopLoadingSubframes() |
| { |
| for (Frame* child = m_frame->tree()->firstChild(); child; child = child->tree()->nextSibling()) |
| child->loader()->stopAllLoaders(); |
| } |
| |
| void FrameLoader::stopAllLoaders() |
| { |
| // If this method is called from within this method, infinite recursion can occur (3442218). Avoid this. |
| if (m_inStopAllLoaders) |
| return; |
| |
| m_inStopAllLoaders = true; |
| |
| stopPolicyCheck(); |
| |
| stopLoadingSubframes(); |
| if (m_provisionalDocumentLoader) |
| m_provisionalDocumentLoader->stopLoading(); |
| if (m_documentLoader) |
| m_documentLoader->stopLoading(); |
| setProvisionalDocumentLoader(0); |
| m_client->clearArchivedResources(); |
| |
| m_inStopAllLoaders = false; |
| } |
| |
| void FrameLoader::stopForUserCancel(bool deferCheckLoadComplete) |
| { |
| stopAllLoaders(); |
| |
| if (deferCheckLoadComplete) |
| scheduleCheckLoadComplete(); |
| else if (m_frame->page()) |
| checkLoadComplete(); |
| } |
| |
| void FrameLoader::cancelPendingArchiveLoad(ResourceLoader* loader) |
| { |
| m_client->cancelPendingArchiveLoad(loader); |
| } |
| |
| DocumentLoader* FrameLoader::activeDocumentLoader() const |
| { |
| if (m_state == FrameStateProvisional) |
| return m_provisionalDocumentLoader.get(); |
| return m_documentLoader.get(); |
| } |
| |
| bool FrameLoader::isLoading() const |
| { |
| DocumentLoader* docLoader = activeDocumentLoader(); |
| if (!docLoader) |
| return false; |
| return docLoader->isLoadingMainResource() || docLoader->isLoadingSubresources() || docLoader->isLoadingPlugIns(); |
| } |
| |
| bool FrameLoader::frameHasLoaded() const |
| { |
| return m_committedFirstRealDocumentLoad || (m_provisionalDocumentLoader && !m_creatingInitialEmptyDocument); |
| } |
| |
| void FrameLoader::setDocumentLoader(DocumentLoader* loader) |
| { |
| if (!loader && !m_documentLoader) |
| return; |
| |
| ASSERT(loader != m_documentLoader); |
| ASSERT(!loader || loader->frameLoader() == this); |
| |
| m_client->prepareForDataSourceReplacement(); |
| detachChildren(); |
| if (m_documentLoader) |
| m_documentLoader->detachFromFrame(); |
| |
| m_documentLoader = loader; |
| } |
| |
| DocumentLoader* FrameLoader::documentLoader() const |
| { |
| return m_documentLoader.get(); |
| } |
| |
| void FrameLoader::setPolicyDocumentLoader(DocumentLoader* loader) |
| { |
| if (m_policyDocumentLoader == loader) |
| return; |
| |
| ASSERT(m_frame); |
| if (loader) |
| loader->setFrame(m_frame); |
| if (m_policyDocumentLoader |
| && m_policyDocumentLoader != m_provisionalDocumentLoader |
| && m_policyDocumentLoader != m_documentLoader) |
| m_policyDocumentLoader->detachFromFrame(); |
| |
| m_policyDocumentLoader = loader; |
| } |
| |
| DocumentLoader* FrameLoader::provisionalDocumentLoader() |
| { |
| return m_provisionalDocumentLoader.get(); |
| } |
| |
| void FrameLoader::setProvisionalDocumentLoader(DocumentLoader* loader) |
| { |
| ASSERT(!loader || !m_provisionalDocumentLoader); |
| ASSERT(!loader || loader->frameLoader() == this); |
| |
| if (m_provisionalDocumentLoader && m_provisionalDocumentLoader != m_documentLoader) |
| m_provisionalDocumentLoader->detachFromFrame(); |
| |
| m_provisionalDocumentLoader = loader; |
| } |
| |
| FrameState FrameLoader::state() const |
| { |
| return m_state; |
| } |
| |
| double FrameLoader::timeOfLastCompletedLoad() |
| { |
| return storedTimeOfLastCompletedLoad; |
| } |
| |
| void FrameLoader::setState(FrameState newState) |
| { |
| m_state = newState; |
| |
| if (newState == FrameStateProvisional) |
| provisionalLoadStarted(); |
| else if (newState == FrameStateComplete) { |
| frameLoadCompleted(); |
| storedTimeOfLastCompletedLoad = currentTime(); |
| if (m_documentLoader) |
| m_documentLoader->stopRecordingResponses(); |
| } |
| } |
| |
| void FrameLoader::clearProvisionalLoad() |
| { |
| setProvisionalDocumentLoader(0); |
| if (Page* page = m_frame->page()) |
| page->progress()->progressCompleted(m_frame); |
| setState(FrameStateComplete); |
| } |
| |
| void FrameLoader::markLoadComplete() |
| { |
| setState(FrameStateComplete); |
| } |
| |
| void FrameLoader::commitProvisionalLoad(PassRefPtr<CachedPage> prpCachedPage) |
| { |
| RefPtr<CachedPage> cachedPage = prpCachedPage; |
| RefPtr<DocumentLoader> pdl = m_provisionalDocumentLoader; |
| |
| if (m_loadType != FrameLoadTypeReplace) |
| closeOldDataSources(); |
| |
| if (!cachedPage && !m_creatingInitialEmptyDocument) |
| m_client->makeRepresentation(pdl.get()); |
| |
| transitionToCommitted(cachedPage); |
| |
| // Call clientRedirectCancelledOrFinished() here so that the frame load delegate is notified that the redirect's |
| // status has changed, if there was a redirect. The frame load delegate may have saved some state about |
| // the redirect in its -webView:willPerformClientRedirectToURL:delay:fireDate:forFrame:. Since we are |
| // just about to commit a new page, there cannot possibly be a pending redirect at this point. |
| if (m_sentRedirectNotification) |
| clientRedirectCancelledOrFinished(false); |
| |
| if (cachedPage && cachedPage->document()) { |
| open(*cachedPage); |
| cachedPage->clear(); |
| } else { |
| KURL url = pdl->substituteData().responseURL(); |
| if (url.isEmpty()) |
| url = pdl->URL(); |
| if (url.isEmpty()) |
| url = pdl->responseURL(); |
| if (url.isEmpty()) |
| url = "about:blank"; |
| |
| didOpenURL(url); |
| } |
| opened(); |
| } |
| |
| void FrameLoader::transitionToCommitted(PassRefPtr<CachedPage> cachedPage) |
| { |
| ASSERT(m_client->hasWebView()); |
| ASSERT(m_state == FrameStateProvisional); |
| |
| if (m_state != FrameStateProvisional) |
| return; |
| |
| m_client->setCopiesOnScroll(); |
| updateHistoryForCommit(); |
| |
| // The call to closeURL() invokes the unload event handler, which can execute arbitrary |
| // JavaScript. If the script initiates a new load, we need to abandon the current load, |
| // or the two will stomp each other. |
| DocumentLoader* pdl = m_provisionalDocumentLoader.get(); |
| if (m_documentLoader) |
| closeURL(); |
| if (pdl != m_provisionalDocumentLoader) |
| return; |
| |
| // Nothing else can interupt this commit - set the Provisional->Committed transition in stone |
| if (m_documentLoader) |
| m_documentLoader->stopLoadingSubresources(); |
| if (m_documentLoader) |
| m_documentLoader->stopLoadingPlugIns(); |
| |
| setDocumentLoader(m_provisionalDocumentLoader.get()); |
| setProvisionalDocumentLoader(0); |
| setState(FrameStateCommittedPage); |
| |
| // Handle adding the URL to the back/forward list. |
| DocumentLoader* dl = m_documentLoader.get(); |
| String ptitle = dl->title(); |
| |
| switch (m_loadType) { |
| case FrameLoadTypeForward: |
| case FrameLoadTypeBack: |
| case FrameLoadTypeIndexedBackForward: |
| if (Page* page = m_frame->page()) |
| if (page->backForwardList()) { |
| updateHistoryForBackForwardNavigation(); |
| |
| // Create a document view for this document, or used the cached view. |
| if (cachedPage) |
| m_client->setDocumentViewFromCachedPage(cachedPage.get()); |
| else |
| m_client->makeDocumentView(); |
| } |
| break; |
| |
| case FrameLoadTypeReload: |
| case FrameLoadTypeSame: |
| case FrameLoadTypeReplace: |
| updateHistoryForReload(); |
| m_client->makeDocumentView(); |
| break; |
| |
| // FIXME - just get rid of this case, and merge FrameLoadTypeReloadAllowingStaleData with the above case |
| case FrameLoadTypeReloadAllowingStaleData: |
| m_client->makeDocumentView(); |
| break; |
| |
| case FrameLoadTypeStandard: |
| updateHistoryForStandardLoad(); |
| if (m_frame->view()) |
| m_frame->view()->suppressScrollbars(true); |
| m_client->makeDocumentView(); |
| break; |
| |
| case FrameLoadTypeRedirectWithLockedHistory: |
| updateHistoryForRedirectWithLockedHistory(); |
| m_client->makeDocumentView(); |
| break; |
| |
| // FIXME Remove this check when dummy ds is removed (whatever "dummy ds" is). |
| // An exception should be thrown if we're in the FrameLoadTypeUninitialized state. |
| default: |
| ASSERT_NOT_REACHED(); |
| } |
| |
| m_responseMIMEType = dl->responseMIMEType(); |
| |
| // Tell the client we've committed this URL. |
| ASSERT(m_client->hasFrameView()); |
| |
| if (m_creatingInitialEmptyDocument) |
| return; |
| |
| m_committedFirstRealDocumentLoad = true; |
| |
| // For non-cached HTML pages, these methods are called in FrameLoader::begin. |
| if (cachedPage || !m_client->hasHTMLView()) { |
| dispatchDidCommitLoad(); |
| |
| // If we have a title let the WebView know about it. |
| if (!ptitle.isNull()) |
| m_client->dispatchDidReceiveTitle(ptitle); |
| } |
| } |
| |
| bool FrameLoader::privateBrowsingEnabled() const |
| { |
| return m_client->privateBrowsingEnabled(); |
| } |
| |
| void FrameLoader::clientRedirectCancelledOrFinished(bool cancelWithLoadInProgress) |
| { |
| // Note that -webView:didCancelClientRedirectForFrame: is called on the frame load delegate even if |
| // the redirect succeeded. We should either rename this API, or add a new method, like |
| // -webView:didFinishClientRedirectForFrame: |
| m_client->dispatchDidCancelClientRedirect(); |
| |
| if (!cancelWithLoadInProgress) |
| m_quickRedirectComing = false; |
| |
| m_sentRedirectNotification = false; |
| } |
| |
| void FrameLoader::clientRedirected(const KURL& URL, double seconds, double fireDate, bool lockHistory, bool isJavaScriptFormAction) |
| { |
| m_client->dispatchWillPerformClientRedirect(URL, seconds, fireDate); |
| |
| // Remember that we sent a redirect notification to the frame load delegate so that when we commit |
| // the next provisional load, we can send a corresponding -webView:didCancelClientRedirectForFrame: |
| m_sentRedirectNotification = true; |
| |
| // If a "quick" redirect comes in an, we set a special mode so we treat the next |
| // load as part of the same navigation. If we don't have a document loader, we have |
| // no "original" load on which to base a redirect, so we treat the redirect as a normal load. |
| m_quickRedirectComing = lockHistory && m_documentLoader && !isJavaScriptFormAction; |
| } |
| |
| bool FrameLoader::shouldReload(const KURL& currentURL, const KURL& destinationURL) |
| { |
| // This function implements the rule: "Don't reload if navigating by fragment within |
| // the same URL, but do reload if going to a new URL or to the same URL with no |
| // fragment identifier at all." |
| if (!currentURL.hasRef() && !destinationURL.hasRef()) |
| return true; |
| return !equalIgnoringRef(currentURL, destinationURL); |
| } |
| |
| void FrameLoader::closeOldDataSources() |
| { |
| // FIXME: Is it important for this traversal to be postorder instead of preorder? |
| // If so, add helpers for postorder traversal, and use them. If not, then lets not |
| // use a recursive algorithm here. |
| for (Frame* child = m_frame->tree()->firstChild(); child; child = child->tree()->nextSibling()) |
| child->loader()->closeOldDataSources(); |
| |
| if (m_documentLoader) |
| m_client->dispatchWillClose(); |
| |
| m_client->setMainFrameDocumentReady(false); // stop giving out the actual DOMDocument to observers |
| } |
| |
| void FrameLoader::open(CachedPage& cachedPage) |
| { |
| ASSERT(m_frame->page()); |
| ASSERT(m_frame->page()->mainFrame() == m_frame); |
| |
| cancelRedirection(); |
| |
| // We still have to close the previous part page. |
| closeURL(); |
| |
| m_isComplete = false; |
| |
| // Don't re-emit the load event. |
| m_didCallImplicitClose = true; |
| |
| // Delete old status bar messages (if it _was_ activated on last URL). |
| Settings* settings = m_frame->settings(); |
| if (settings && settings->isJavaScriptEnabled()) { |
| m_frame->setJSStatusBarText(String()); |
| m_frame->setJSDefaultStatusBarText(String()); |
| } |
| |
| KURL URL = cachedPage.URL(); |
| |
| if (URL.protocol().startsWith("http") && !URL.host().isEmpty() && URL.path().isEmpty()) |
| URL.setPath("/"); |
| |
| m_URL = URL; |
| m_workingURL = URL; |
| |
| started(); |
| |
| clear(); |
| |
| Document* document = cachedPage.document(); |
| ASSERT(document); |
| document->setInPageCache(false); |
| |
| m_needsClear = true; |
| m_shouldClearWindowProperties = true; |
| m_isComplete = false; |
| m_didCallImplicitClose = false; |
| m_outgoingReferrer = URL.url(); |
| |
| FrameView* view = cachedPage.view(); |
| if (view) |
| view->setWasScrolledByUser(false); |
| m_frame->setView(view); |
| |
| m_frame->setDocument(document); |
| m_decoder = document->decoder(); |
| |
| updatePolicyBaseURL(); |
| |
| cachedPage.restore(m_frame->page()); |
| |
| checkCompleted(); |
| } |
| |
| bool FrameLoader::isStopping() const |
| { |
| return activeDocumentLoader()->isStopping(); |
| } |
| |
| void FrameLoader::finishedLoading() |
| { |
| // Retain because the stop may release the last reference to it. |
| RefPtr<Frame> protect(m_frame); |
| |
| RefPtr<DocumentLoader> dl = activeDocumentLoader(); |
| dl->finishedLoading(); |
| if (!dl->mainDocumentError().isNull() || !dl->frameLoader()) |
| return; |
| dl->setPrimaryLoadComplete(true); |
| m_client->dispatchDidLoadMainResource(dl.get()); |
| checkLoadComplete(); |
| } |
| |
| // FIXME: Which one of these URL methods is right? |
| |
| KURL FrameLoader::url() const |
| { |
| return m_URL; |
| } |
| |
| KURL FrameLoader::URL() const |
| { |
| return activeDocumentLoader()->URL(); |
| } |
| |
| bool FrameLoader::isArchiveLoadPending(ResourceLoader* loader) const |
| { |
| return m_client->isArchiveLoadPending(loader); |
| } |
| |
| bool FrameLoader::isHostedByObjectElement() const |
| { |
| HTMLFrameOwnerElement* owner = m_frame->ownerElement(); |
| return owner && owner->hasTagName(objectTag); |
| } |
| |
| bool FrameLoader::isLoadingMainFrame() const |
| { |
| Page* page = m_frame->page(); |
| return page && m_frame == page->mainFrame(); |
| } |
| |
| bool FrameLoader::canShowMIMEType(const String& MIMEType) const |
| { |
| return m_client->canShowMIMEType(MIMEType); |
| } |
| |
| bool FrameLoader::representationExistsForURLScheme(const String& URLScheme) |
| { |
| return m_client->representationExistsForURLScheme(URLScheme); |
| } |
| |
| String FrameLoader::generatedMIMETypeForURLScheme(const String& URLScheme) |
| { |
| return m_client->generatedMIMETypeForURLScheme(URLScheme); |
| } |
| |
| void FrameLoader::cancelContentPolicyCheck() |
| { |
| m_client->cancelPolicyCheck(); |
| m_policyCheck.clear(); |
| } |
| |
| void FrameLoader::didReceiveServerRedirectForProvisionalLoadForFrame() |
| { |
| m_client->dispatchDidReceiveServerRedirectForProvisionalLoad(); |
| } |
| |
| void FrameLoader::finishedLoadingDocument(DocumentLoader* loader) |
| { |
| #if PLATFORM(WIN) |
| if (!m_creatingInitialEmptyDocument) |
| #endif |
| m_client->finishedLoading(loader); |
| } |
| |
| bool FrameLoader::isReplacing() const |
| { |
| return m_loadType == FrameLoadTypeReplace; |
| } |
| |
| void FrameLoader::setReplacing() |
| { |
| m_loadType = FrameLoadTypeReplace; |
| } |
| |
| void FrameLoader::revertToProvisional(DocumentLoader* loader) |
| { |
| m_client->revertToProvisionalState(loader); |
| } |
| |
| bool FrameLoader::subframeIsLoading() const |
| { |
| // It's most likely that the last added frame is the last to load so we walk backwards. |
| for (Frame* child = m_frame->tree()->lastChild(); child; child = child->tree()->previousSibling()) { |
| FrameLoader* childLoader = child->loader(); |
| DocumentLoader* documentLoader = childLoader->documentLoader(); |
| if (documentLoader && documentLoader->isLoadingInAPISense()) |
| return true; |
| documentLoader = childLoader->provisionalDocumentLoader(); |
| if (documentLoader && documentLoader->isLoadingInAPISense()) |
| return true; |
| } |
| return false; |
| } |
| |
| void FrameLoader::willChangeTitle(DocumentLoader* loader) |
| { |
| m_client->willChangeTitle(loader); |
| } |
| |
| FrameLoadType FrameLoader::loadType() const |
| { |
| return m_loadType; |
| } |
| |
| void FrameLoader::stopPolicyCheck() |
| { |
| m_client->cancelPolicyCheck(); |
| PolicyCheck check = m_policyCheck; |
| m_policyCheck.clear(); |
| check.cancel(); |
| } |
| |
| void FrameLoader::checkLoadCompleteForThisFrame() |
| { |
| ASSERT(m_client->hasWebView()); |
| |
| switch (m_state) { |
| case FrameStateProvisional: { |
| if (m_delegateIsHandlingProvisionalLoadError) |
| return; |
| |
| RefPtr<DocumentLoader> pdl = m_provisionalDocumentLoader; |
| if (!pdl) |
| return; |
| |
| // If we've received any errors we may be stuck in the provisional state and actually complete. |
| const ResourceError& error = pdl->mainDocumentError(); |
| if (error.isNull()) |
| return; |
| |
| // Check all children first. |
| RefPtr<HistoryItem> item; |
| if (Page* page = m_frame->page()) |
| if (isBackForwardLoadType(loadType()) && m_frame == page->mainFrame()) |
| item = m_currentHistoryItem; |
| |
| bool shouldReset = true; |
| if (!pdl->isLoadingInAPISense()) { |
| m_delegateIsHandlingProvisionalLoadError = true; |
| m_client->dispatchDidFailProvisionalLoad(error); |
| m_delegateIsHandlingProvisionalLoadError = false; |
| |
| // FIXME: can stopping loading here possibly have any effect, if isLoading is false, |
| // which it must be to be in this branch of the if? And is it OK to just do a full-on |
| // stopAllLoaders instead of stopLoadingSubframes? |
| stopLoadingSubframes(); |
| pdl->stopLoading(); |
| |
| // Finish resetting the load state, but only if another load hasn't been started by the |
| // delegate callback. |
| if (pdl == m_provisionalDocumentLoader) |
| clearProvisionalLoad(); |
| else if (m_provisionalDocumentLoader) { |
| KURL unreachableURL = m_provisionalDocumentLoader->unreachableURL(); |
| if (!unreachableURL.isEmpty() && unreachableURL == pdl->request().url()) |
| shouldReset = false; |
| } |
| } |
| if (shouldReset && item) |
| if (Page* page = m_frame->page()) |
| page->backForwardList()->goToItem(item.get()); |
| return; |
| } |
| |
| case FrameStateCommittedPage: { |
| DocumentLoader* dl = m_documentLoader.get(); |
| if (!dl || dl->isLoadingInAPISense()) |
| return; |
| |
| markLoadComplete(); |
| |
| // FIXME: Is this subsequent work important if we already navigated away? |
| // Maybe there are bugs because of that, or extra work we can skip because |
| // the new page is ready. |
| |
| m_client->forceLayoutForNonHTML(); |
| |
| // If the user had a scroll point, scroll to it, overriding the anchor point if any. |
| if (Page* page = m_frame->page()) |
| if ((isBackForwardLoadType(m_loadType) || m_loadType == FrameLoadTypeReload) && page->backForwardList()) |
| restoreScrollPositionAndViewState(); |
| |
| if (m_creatingInitialEmptyDocument || !m_committedFirstRealDocumentLoad) |
| return; |
| |
| const ResourceError& error = dl->mainDocumentError(); |
| if (!error.isNull()) |
| m_client->dispatchDidFailLoad(error); |
| else |
| m_client->dispatchDidFinishLoad(); |
| |
| if (Page* page = m_frame->page()) |
| page->progress()->progressCompleted(m_frame); |
| return; |
| } |
| |
| case FrameStateComplete: |
| // Even if already complete, we might have set a previous item on a frame that |
| // didn't do any data loading on the past transaction. Make sure to clear these out. |
| m_client->frameLoadCompleted(); |
| return; |
| } |
| |
| ASSERT_NOT_REACHED(); |
| } |
| |
| void FrameLoader::continueAfterContentPolicy(PolicyAction policy) |
| { |
| PolicyCheck check = m_policyCheck; |
| m_policyCheck.clear(); |
| check.call(policy); |
| } |
| |
| void FrameLoader::continueLoadAfterWillSubmitForm(PolicyAction) |
| { |
| if (!m_provisionalDocumentLoader) |
| return; |
| |
| m_provisionalDocumentLoader->prepareForLoadStart(); |
| |
| DocumentLoader* activeDocLoader = activeDocumentLoader(); |
| if (activeDocLoader && activeDocLoader->isLoadingMainResource()) |
| return; |
| |
| m_provisionalDocumentLoader->setLoadingFromCachedPage(false); |
| |
| unsigned long identifier = 0; |
| |
| if (Page* page = m_frame->page()) { |
| identifier = page->progress()->createUniqueIdentifier(); |
| dispatchAssignIdentifierToInitialRequest(identifier, m_provisionalDocumentLoader.get(), m_provisionalDocumentLoader->originalRequest()); |
| } |
| |
| if (!m_provisionalDocumentLoader->startLoadingMainResource(identifier)) |
| m_provisionalDocumentLoader->updateLoading(); |
| } |
| |
| void FrameLoader::didFirstLayout() |
| { |
| if (Page* page = m_frame->page()) |
| if (isBackForwardLoadType(m_loadType) && page->backForwardList()) |
| restoreScrollPositionAndViewState(); |
| |
| m_firstLayoutDone = true; |
| m_client->dispatchDidFirstLayout(); |
| } |
| |
| void FrameLoader::frameLoadCompleted() |
| { |
| m_client->frameLoadCompleted(); |
| |
| // After a canceled provisional load, firstLayoutDone is false. |
| // Reset it to true if we're displaying a page. |
| if (m_documentLoader) |
| m_firstLayoutDone = true; |
| } |
| |
| bool FrameLoader::firstLayoutDone() const |
| { |
| return m_firstLayoutDone; |
| } |
| |
| bool FrameLoader::isQuickRedirectComing() const |
| { |
| return m_quickRedirectComing; |
| } |
| |
| void FrameLoader::detachChildren() |
| { |
| // FIXME: Is it really necessary to do this in reverse order? |
| Frame* previous; |
| for (Frame* child = m_frame->tree()->lastChild(); child; child = previous) { |
| previous = child->tree()->previousSibling(); |
| child->loader()->detachFromParent(); |
| } |
| } |
| |
| void FrameLoader::recursiveCheckLoadComplete() |
| { |
| Vector<RefPtr<Frame>, 10> frames; |
| |
| for (RefPtr<Frame> frame = m_frame->tree()->firstChild(); frame; frame = frame->tree()->nextSibling()) |
| frames.append(frame); |
| |
| unsigned size = frames.size(); |
| for (unsigned i = 0; i < size; i++) |
| frames[i]->loader()->recursiveCheckLoadComplete(); |
| |
| checkLoadCompleteForThisFrame(); |
| } |
| |
| // Called every time a resource is completely loaded, or an error is received. |
| void FrameLoader::checkLoadComplete() |
| { |
| ASSERT(m_client->hasWebView()); |
| |
| // FIXME: Always traversing the entire frame tree is a bit inefficient, but |
| // is currently needed in order to null out the previous history item for all frames. |
| if (Page* page = m_frame->page()) |
| page->mainFrame()->loader()->recursiveCheckLoadComplete(); |
| } |
| |
| int FrameLoader::numPendingOrLoadingRequests(bool recurse) const |
| { |
| if (!recurse) |
| return numRequests(m_frame->document()); |
| |
| int count = 0; |
| for (Frame* frame = m_frame; frame; frame = frame->tree()->traverseNext(m_frame)) |
| count += numRequests(frame->document()); |
| return count; |
| } |
| |
| FrameLoaderClient* FrameLoader::client() const |
| { |
| return m_client; |
| } |
| |
| void FrameLoader::submitForm(const FrameLoadRequest& request, Event* event) |
| { |
| // FIXME: We'd like to remove this altogether and fix the multiple form submission issue another way. |
| // We do not want to submit more than one form from the same page, |
| // nor do we want to submit a single form more than once. |
| // This flag prevents these from happening; not sure how other browsers prevent this. |
| // The flag is reset in each time we start handle a new mouse or key down event, and |
| // also in setView since this part may get reused for a page from the back/forward cache. |
| // The form multi-submit logic here is only needed when we are submitting a form that affects this frame. |
| // FIXME: Frame targeting is only one of the ways the submission could end up doing something other |
| // than replacing this frame's content, so this check is flawed. On the other hand, the check is hardly |
| // needed any more now that we reset m_submittedFormURL on each mouse or key down event. |
| Frame* target = m_frame->tree()->find(request.frameName()); |
| if (m_frame->tree()->isDescendantOf(target)) { |
| if (m_submittedFormURL == request.resourceRequest().url()) |
| return; |
| m_submittedFormURL = request.resourceRequest().url(); |
| } |
| |
| // FIXME: We should probably call userGestureHint() to tell whether this form submission was the result of a user gesture. |
| load(request, false, true, event, m_formAboutToBeSubmitted.get(), m_formValuesAboutToBeSubmitted); |
| |
| clearRecordedFormValues(); |
| } |
| |
| void FrameLoader::urlSelected(const FrameLoadRequest& request, Event* event, bool lockHistory, bool userGesture) |
| { |
| FrameLoadRequest copy = request; |
| if (copy.resourceRequest().httpReferrer().isEmpty()) |
| copy.resourceRequest().setHTTPReferrer(m_outgoingReferrer); |
| |
| load(copy, lockHistory, userGesture, event, 0, HashMap<String, String>()); |
| } |
| |
| String FrameLoader::userAgent(const KURL& url) const |
| { |
| return m_client->userAgent(url); |
| } |
| |
| void FrameLoader::tokenizerProcessedData() |
| { |
| ASSERT(m_frame->page()); |
| ASSERT(m_frame->document()); |
| |
| checkCompleted(); |
| } |
| |
| void FrameLoader::didTellBridgeAboutLoad(const String& URL) |
| { |
| m_urlsBridgeKnowsAbout.add(URL); |
| } |
| |
| bool FrameLoader::haveToldBridgeAboutLoad(const String& URL) |
| { |
| return m_urlsBridgeKnowsAbout.contains(URL); |
| } |
| |
| void FrameLoader::handledOnloadEvents() |
| { |
| m_client->dispatchDidHandleOnloadEvents(); |
| } |
| |
| void FrameLoader::frameDetached() |
| { |
| stopAllLoaders(); |
| detachFromParent(); |
| } |
| |
| void FrameLoader::detachFromParent() |
| { |
| RefPtr<Frame> protect(m_frame); |
| |
| closeURL(); |
| stopAllLoaders(); |
| saveScrollPositionAndViewStateToItem(currentHistoryItem()); |
| detachChildren(); |
| |
| if (Page* page = m_frame->page()) |
| page->inspectorController()->frameDetachedFromParent(m_frame); |
| |
| m_client->detachedFromParent2(); |
| setDocumentLoader(0); |
| m_client->detachedFromParent3(); |
| if (Frame* parent = m_frame->tree()->parent()) { |
| parent->tree()->removeChild(m_frame); |
| parent->loader()->scheduleCheckCompleted(); |
| } else { |
| m_frame->setView(0); |
| m_frame->pageDestroyed(); |
| } |
| #if PLATFORM(MAC) |
| [m_frame->bridge() close]; |
| #endif |
| m_client->detachedFromParent4(); |
| } |
| |
| void FrameLoader::dispatchDidChangeLocationWithinPage() |
| { |
| m_client->dispatchDidChangeLocationWithinPage(); |
| } |
| |
| void FrameLoader::dispatchDidFinishLoadToClient() |
| { |
| m_client->didFinishLoad(); |
| } |
| |
| void FrameLoader::updateGlobalHistoryForStandardLoad(const KURL& url) |
| { |
| m_client->updateGlobalHistoryForStandardLoad(url); |
| } |
| |
| void FrameLoader::updateGlobalHistoryForReload(const KURL& url) |
| { |
| m_client->updateGlobalHistoryForReload(url); |
| } |
| |
| bool FrameLoader::shouldGoToHistoryItem(HistoryItem* item) const |
| { |
| return m_client->shouldGoToHistoryItem(item); |
| } |
| |
| void FrameLoader::addExtraFieldsToRequest(ResourceRequest& request, bool mainResource, bool alwaysFromRequest) |
| { |
| applyUserAgent(request); |
| |
| if (m_loadType == FrameLoadTypeReload) |
| request.setHTTPHeaderField("Cache-Control", "max-age=0"); |
| |
| // Don't set the cookie policy URL if it's already been set. |
| if (request.mainDocumentURL().isEmpty()) { |
| if (mainResource && (isLoadingMainFrame() || alwaysFromRequest)) |
| request.setMainDocumentURL(request.url()); |
| else if (Page* page = m_frame->page()) |
| request.setMainDocumentURL(page->mainFrame()->loader()->url()); |
| } |
| |
| if (mainResource) |
| request.setHTTPAccept("text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5"); |
| } |
| |
| void FrameLoader::committedLoad(DocumentLoader* loader, const char* data, int length) |
| { |
| m_client->committedLoad(loader, data, length); |
| } |
| |
| void FrameLoader::post(const KURL& URL, const String& referrer, const String& frameName, PassRefPtr<FormData> formData, |
| const String& contentType, Event* event, HTMLFormElement* form, const HashMap<String, String>& formValues) |
| { |
| // When posting, use the NSURLRequestReloadIgnoringCacheData load flag. |
| // This prevents a potential bug which may cause a page with a form that uses itself |
| // as an action to be returned from the cache without submitting. |
| |
| // FIXME: Where's the code that implements what the comment above says? |
| |
| ResourceRequest request(URL); |
| addExtraFieldsToRequest(request, true, true); |
| |
| if (!referrer.isEmpty()) |
| request.setHTTPReferrer(referrer); |
| request.setHTTPMethod("POST"); |
| request.setHTTPBody(formData); |
| request.setHTTPContentType(contentType); |
| |
| NavigationAction action(URL, FrameLoadTypeStandard, true, event); |
| |
| RefPtr<FormState> formState; |
| if (form && !formValues.isEmpty()) |
| formState = FormState::create(form, formValues, m_frame); |
| |
| if (!frameName.isEmpty()) { |
| if (Frame* targetFrame = m_frame->tree()->find(frameName)) |
| targetFrame->loader()->load(request, action, FrameLoadTypeStandard, formState.release()); |
| else |
| checkNewWindowPolicy(action, request, formState.release(), frameName); |
| } else |
| load(request, action, FrameLoadTypeStandard, formState.release()); |
| } |
| |
| bool FrameLoader::isReloading() const |
| { |
| return documentLoader()->request().cachePolicy() == ReloadIgnoringCacheData; |
| } |
| |
| void FrameLoader::loadEmptyDocumentSynchronously() |
| { |
| ResourceRequest request(KURL("")); |
| load(request); |
| } |
| |
| void FrameLoader::loadResourceSynchronously(const ResourceRequest& request, ResourceError& error, ResourceResponse& response, Vector<char>& data) |
| { |
| // Since this is a subresource, we can load any URL (we ignore the return value). |
| // But we still want to know whether we should hide the referrer or not, so we call the canLoad method. |
| String referrer = m_outgoingReferrer; |
| if (shouldHideReferrer(request.url(), referrer)) |
| referrer = String(); |
| |
| ResourceRequest initialRequest = request; |
| initialRequest.setTimeoutInterval(10); |
| |
| if (initialRequest.isConditional()) |
| initialRequest.setCachePolicy(ReloadIgnoringCacheData); |
| else |
| initialRequest.setCachePolicy(documentLoader()->request().cachePolicy()); |
| |
| if (!referrer.isEmpty()) |
| initialRequest.setHTTPReferrer(referrer); |
| |
| if (Page* page = m_frame->page()) |
| initialRequest.setMainDocumentURL(page->mainFrame()->loader()->documentLoader()->request().url()); |
| initialRequest.setHTTPUserAgent(client()->userAgent(request.url())); |
| |
| unsigned long identifier = 0; |
| ResourceRequest newRequest(initialRequest); |
| requestFromDelegate(newRequest, identifier, error); |
| |
| if (error.isNull()) { |
| ASSERT(!newRequest.isNull()); |
| didTellBridgeAboutLoad(newRequest.url().url()); |
| ResourceHandle::loadResourceSynchronously(newRequest, error, response, data); |
| } |
| |
| sendRemainingDelegateMessages(identifier, response, data.size(), error); |
| } |
| |
| void FrameLoader::assignIdentifierToInitialRequest(unsigned long identifier, const ResourceRequest& clientRequest) |
| { |
| return dispatchAssignIdentifierToInitialRequest(identifier, activeDocumentLoader(), clientRequest); |
| } |
| |
| void FrameLoader::willSendRequest(ResourceLoader* loader, ResourceRequest& clientRequest, const ResourceResponse& redirectResponse) |
| { |
| applyUserAgent(clientRequest); |
| dispatchWillSendRequest(loader->documentLoader(), loader->identifier(), clientRequest, redirectResponse); |
| } |
| |
| void FrameLoader::didReceiveResponse(ResourceLoader* loader, const ResourceResponse& r) |
| { |
| activeDocumentLoader()->addResponse(r); |
| |
| if (Page* page = m_frame->page()) |
| page->progress()->incrementProgress(loader->identifier(), r); |
| dispatchDidReceiveResponse(loader->documentLoader(), loader->identifier(), r); |
| } |
| |
| void FrameLoader::didReceiveData(ResourceLoader* loader, const char* data, int length, int lengthReceived) |
| { |
| if (Page* page = m_frame->page()) |
| page->progress()->incrementProgress(loader->identifier(), data, length); |
| dispatchDidReceiveContentLength(loader->documentLoader(), loader->identifier(), lengthReceived); |
| } |
| |
| void FrameLoader::didFailToLoad(ResourceLoader* loader, const ResourceError& error) |
| { |
| if (Page* page = m_frame->page()) |
| page->progress()->completeProgress(loader->identifier()); |
| if (!error.isNull()) |
| m_client->dispatchDidFailLoading(loader->documentLoader(), loader->identifier(), error); |
| } |
| |
| const ResourceRequest& FrameLoader::originalRequest() const |
| { |
| return activeDocumentLoader()->originalRequestCopy(); |
| } |
| |
| void FrameLoader::receivedMainResourceError(const ResourceError& error, bool isComplete) |
| { |
| // Retain because the stop may release the last reference to it. |
| RefPtr<Frame> protect(m_frame); |
| |
| RefPtr<DocumentLoader> loader = activeDocumentLoader(); |
| |
| if (isComplete) { |
| // FIXME: Don't want to do this if an entirely new load is going, so should check |
| // that both data sources on the frame are either this or nil. |
| stop(); |
| if (m_client->shouldFallBack(error)) |
| handleFallbackContent(); |
| } |
| |
| if (m_state == FrameStateProvisional) { |
| KURL failedURL = m_provisionalDocumentLoader->originalRequestCopy().url(); |
| didNotOpenURL(failedURL); |
| |
| // We might have made a page cache item, but now we're bailing out due to an error before we ever |
| // transitioned to the new page (before WebFrameState == commit). The goal here is to restore any state |
| // so that the existing view (that wenever got far enough to replace) can continue being used. |
| m_frame->document()->setInPageCache(false); |
| invalidateCurrentItemCachedPage(); |
| |
| // Call clientRedirectCancelledOrFinished here so that the frame load delegate is notified that the redirect's |
| // status has changed, if there was a redirect. The frame load delegate may have saved some state about |
| // the redirect in its -webView:willPerformClientRedirectToURL:delay:fireDate:forFrame:. Since we are definitely |
| // not going to use this provisional resource, as it was cancelled, notify the frame load delegate that the redirect |
| // has ended. |
| if (m_sentRedirectNotification) |
| clientRedirectCancelledOrFinished(false); |
| } |
| |
| |
| loader->mainReceivedError(error, isComplete); |
| } |
| |
| void FrameLoader::callContinueFragmentScrollAfterNavigationPolicy(void* argument, |
| const ResourceRequest& request, PassRefPtr<FormState>, bool shouldContinue) |
| { |
| FrameLoader* loader = static_cast<FrameLoader*>(argument); |
| loader->continueFragmentScrollAfterNavigationPolicy(request, shouldContinue); |
| } |
| |
| void FrameLoader::continueFragmentScrollAfterNavigationPolicy(const ResourceRequest& request, bool shouldContinue) |
| { |
| // FIXME: |
| // some functions check m_quickRedirectComing, and others check for |
| // FrameLoadTypeRedirectWithLockedHistory. |
| bool isRedirect = m_quickRedirectComing || m_policyLoadType == FrameLoadTypeRedirectWithLockedHistory; |
| m_quickRedirectComing = false; |
| |
| if (!shouldContinue) |
| return; |
| |
| KURL URL = request.url(); |
| |
| m_documentLoader->replaceRequestURLForAnchorScroll(URL); |
| if (!isRedirect && !shouldTreatURLAsSameAsCurrent(URL)) { |
| // NB: must happen after _setURL, since we add based on the current request. |
| // Must also happen before we openURL and displace the scroll position, since |
| // adding the BF item will save away scroll state. |
| |
| // NB2: If we were loading a long, slow doc, and the user anchor nav'ed before |
| // it was done, currItem is now set the that slow doc, and prevItem is whatever was |
| // before it. Adding the b/f item will bump the slow doc down to prevItem, even |
| // though its load is not yet done. I think this all works out OK, for one because |
| // we have already saved away the scroll and doc state for the long slow load, |
| // but it's not an obvious case. |
| |
| addHistoryItemForFragmentScroll(); |
| } |
| |
| scrollToAnchor(URL); |
| |
| if (!isRedirect) |
| // This will clear previousItem from the rest of the frame tree that didn't |
| // doing any loading. We need to make a pass on this now, since for anchor nav |
| // we'll not go through a real load and reach Completed state. |
| checkLoadComplete(); |
| |
| dispatchDidChangeLocationWithinPage(); |
| m_client->didFinishLoad(); |
| } |
| |
| void FrameLoader::opened() |
| { |
| if (m_loadType == FrameLoadTypeStandard && m_documentLoader->isClientRedirect()) |
| updateHistoryForClientRedirect(); |
| |
| if (m_documentLoader->isLoadingFromCachedPage()) { |
| m_frame->document()->didRestoreFromCache(); |
| |
| // Force a layout to update view size and thereby update scrollbars. |
| m_client->forceLayout(); |
| |
| const ResponseVector& responses = m_documentLoader->responses(); |
| size_t count = responses.size(); |
| for (size_t i = 0; i < count; i++) { |
| const ResourceResponse& response = responses[i]; |
| // FIXME: If the WebKit client changes or cancels the request, this is not respected. |
| ResourceError error; |
| unsigned long identifier; |
| ResourceRequest request(response.url()); |
| requestFromDelegate(request, identifier, error); |
| // FIXME: If we get a resource with more than 2B bytes, this code won't do the right thing. |
| // However, with today's computers and networking speeds, this won't happen in practice. |
| // Could be an issue with a giant local file. |
| sendRemainingDelegateMessages(identifier, response, static_cast<int>(response.expectedContentLength()), error); |
| } |
| |
| pageCache()->remove(m_currentHistoryItem.get()); |
| |
| m_documentLoader->setPrimaryLoadComplete(true); |
| |
| // FIXME: Why only this frame and not parent frames? |
| checkLoadCompleteForThisFrame(); |
| } |
| } |
| |
| void FrameLoader::checkNewWindowPolicy(const NavigationAction& action, const ResourceRequest& request, |
| PassRefPtr<FormState> formState, const String& frameName) |
| { |
| m_policyCheck.set(request, formState, frameName, |
| callContinueLoadAfterNewWindowPolicy, this); |
| m_client->dispatchDecidePolicyForNewWindowAction(&FrameLoader::continueAfterNewWindowPolicy, |
| action, request, frameName); |
| } |
| |
| void FrameLoader::continueAfterNewWindowPolicy(PolicyAction policy) |
| { |
| PolicyCheck check = m_policyCheck; |
| m_policyCheck.clear(); |
| |
| switch (policy) { |
| case PolicyIgnore: |
| check.clearRequest(); |
| break; |
| case PolicyDownload: |
| m_client->startDownload(check.request()); |
| check.clearRequest(); |
| break; |
| case PolicyUse: |
| break; |
| } |
| |
| check.call(policy == PolicyUse); |
| } |
| |
| void FrameLoader::checkNavigationPolicy(const ResourceRequest& request, DocumentLoader* loader, |
| PassRefPtr<FormState> formState, NavigationPolicyDecisionFunction function, void* argument) |
| { |
| NavigationAction action = loader->triggeringAction(); |
| if (action.isEmpty()) { |
| action = NavigationAction(request.url(), NavigationTypeOther); |
| loader->setTriggeringAction(action); |
| } |
| |
| // Don't ask more than once for the same request or if we are loading an empty URL. |
| // This avoids confusion on the part of the client. |
| if (equalIgnoringHeaderFields(request, loader->lastCheckedRequest()) || (!request.isNull() && request.url().isEmpty())) { |
| function(argument, request, 0, true); |
| loader->setLastCheckedRequest(request); |
| return; |
| } |
| |
| // We are always willing to show alternate content for unreachable URLs; |
| // treat it like a reload so it maintains the right state for b/f list. |
| if (loader->substituteData().isValid() && !loader->substituteData().failingURL().isEmpty()) { |
| if (isBackForwardLoadType(m_policyLoadType)) |
| m_policyLoadType = FrameLoadTypeReload; |
| function(argument, request, 0, true); |
| return; |
| } |
| |
| loader->setLastCheckedRequest(request); |
| |
| m_policyCheck.set(request, formState, function, argument); |
| |
| m_delegateIsDecidingNavigationPolicy = true; |
| m_client->dispatchDecidePolicyForNavigationAction(&FrameLoader::continueAfterNavigationPolicy, |
| action, request); |
| m_delegateIsDecidingNavigationPolicy = false; |
| } |
| |
| void FrameLoader::continueAfterNavigationPolicy(PolicyAction policy) |
| { |
| PolicyCheck check = m_policyCheck; |
| m_policyCheck.clear(); |
| |
| bool shouldContinue = policy == PolicyUse; |
| |
| switch (policy) { |
| case PolicyIgnore: |
| check.clearRequest(); |
| break; |
| case PolicyDownload: |
| m_client->startDownload(check.request()); |
| check.clearRequest(); |
| break; |
| case PolicyUse: { |
| ResourceRequest request(check.request()); |
| |
| if (!m_client->canHandleRequest(request)) { |
| handleUnimplementablePolicy(m_client->cannotShowURLError(check.request())); |
| check.clearRequest(); |
| shouldContinue = false; |
| } |
| break; |
| } |
| } |
| |
| check.call(shouldContinue); |
| } |
| |
| void FrameLoader::callContinueLoadAfterNavigationPolicy(void* argument, |
| const ResourceRequest& request, PassRefPtr<FormState> formState, bool shouldContinue) |
| { |
| FrameLoader* loader = static_cast<FrameLoader*>(argument); |
| loader->continueLoadAfterNavigationPolicy(request, formState, shouldContinue); |
| } |
| |
| void FrameLoader::continueLoadAfterNavigationPolicy(const ResourceRequest& request, PassRefPtr<FormState> formState, bool shouldContinue) |
| { |
| // If we loaded an alternate page to replace an unreachableURL, we'll get in here with a |
| // nil policyDataSource because loading the alternate page will have passed |
| // through this method already, nested; otherwise, policyDataSource should still be set. |
| ASSERT(m_policyDocumentLoader || !m_provisionalDocumentLoader->unreachableURL().isEmpty()); |
| |
| bool isTargetItem = m_provisionalHistoryItem ? m_provisionalHistoryItem->isTargetItem() : false; |
| |
| // Two reasons we can't continue: |
| // 1) Navigation policy delegate said we can't so request is nil. A primary case of this |
| // is the user responding Cancel to the form repost nag sheet. |
| // 2) User responded Cancel to an alert popped up by the before unload event handler. |
| // The "before unload" event handler runs only for the main frame. |
| bool canContinue = shouldContinue && (!isLoadingMainFrame() || m_frame->shouldClose()); |
| |
| if (!canContinue) { |
| // If we were waiting for a quick redirect, but the policy delegate decided to ignore it, then we |
| // need to report that the client redirect was cancelled. |
| if (m_quickRedirectComing) |
| clientRedirectCancelledOrFinished(false); |
| |
| setPolicyDocumentLoader(0); |
| |
| // If the navigation request came from the back/forward menu, and we punt on it, we have the |
| // problem that we have optimistically moved the b/f cursor already, so move it back. For sanity, |
| // we only do this when punting a navigation for the target frame or top-level frame. |
| if ((isTargetItem || isLoadingMainFrame()) && isBackForwardLoadType(m_policyLoadType)) |
| if (Page* page = m_frame->page()) { |
| Frame* mainFrame = page->mainFrame(); |
| if (HistoryItem* resetItem = mainFrame->loader()->m_currentHistoryItem.get()) |
| page->backForwardList()->goToItem(resetItem); |
| } |
| return; |
| } |
| |
| FrameLoadType type = m_policyLoadType; |
| stopAllLoaders(); |
| setProvisionalDocumentLoader(m_policyDocumentLoader.get()); |
| m_loadType = type; |
| setState(FrameStateProvisional); |
| |
| setPolicyDocumentLoader(0); |
| |
| if (isBackForwardLoadType(type) && loadProvisionalItemFromCachedPage()) |
| return; |
| |
| if (formState) |
| m_client->dispatchWillSubmitForm(&FrameLoader::continueLoadAfterWillSubmitForm, formState); |
| else |
| continueLoadAfterWillSubmitForm(); |
| } |
| |
| |
| void FrameLoader::callContinueLoadAfterNewWindowPolicy(void* argument, |
| const ResourceRequest& request, PassRefPtr<FormState> formState, const String& frameName, bool shouldContinue) |
| { |
| FrameLoader* loader = static_cast<FrameLoader*>(argument); |
| loader->continueLoadAfterNewWindowPolicy(request, formState, frameName, shouldContinue); |
| } |
| |
| void FrameLoader::continueLoadAfterNewWindowPolicy(const ResourceRequest& request, |
| PassRefPtr<FormState> formState, const String& frameName, bool shouldContinue) |
| { |
| if (!shouldContinue) |
| return; |
| |
| RefPtr<Frame> frame = m_frame; |
| RefPtr<Frame> mainFrame = m_client->dispatchCreatePage(); |
| if (!mainFrame) |
| return; |
| |
| if (frameName != "_blank") |
| mainFrame->tree()->setName(frameName); |
| |
| mainFrame->loader()->setOpenedByDOM(); |
| mainFrame->loader()->m_client->dispatchShow(); |
| mainFrame->loader()->setOpener(frame.get()); |
| mainFrame->loader()->load(request, NavigationAction(), FrameLoadTypeStandard, formState); |
| } |
| |
| void FrameLoader::sendRemainingDelegateMessages(unsigned long identifier, const ResourceResponse& response, int length, const ResourceError& error) |
| { |
| if (!response.isNull()) |
| dispatchDidReceiveResponse(m_documentLoader.get(), identifier, response); |
| |
| if (length > 0) |
| dispatchDidReceiveContentLength(m_documentLoader.get(), identifier, length); |
| |
| if (error.isNull()) |
| dispatchDidFinishLoading(m_documentLoader.get(), identifier); |
| else |
| m_client->dispatchDidFailLoading(m_documentLoader.get(), identifier, error); |
| } |
| |
| void FrameLoader::requestFromDelegate(ResourceRequest& request, unsigned long& identifier, ResourceError& error) |
| { |
| ASSERT(!request.isNull()); |
| |
| identifier = 0; |
| if (Page* page = m_frame->page()) { |
| identifier = page->progress()->createUniqueIdentifier(); |
| dispatchAssignIdentifierToInitialRequest(identifier, m_documentLoader.get(), request); |
| } |
| |
| ResourceRequest newRequest(request); |
| dispatchWillSendRequest(m_documentLoader.get(), identifier, newRequest, ResourceResponse()); |
| |
| if (newRequest.isNull()) |
| error = m_client->cancelledError(request); |
| else |
| error = ResourceError(); |
| |
| request = newRequest; |
| } |
| |
| void FrameLoader::loadedResourceFromMemoryCache(const ResourceRequest& request, const ResourceResponse& response, int length) |
| { |
| if (dispatchDidLoadResourceFromMemoryCache(m_documentLoader.get(), request, response, length)) |
| return; |
| |
| unsigned long identifier; |
| ResourceError error; |
| ResourceRequest r(request); |
| requestFromDelegate(r, identifier, error); |
| sendRemainingDelegateMessages(identifier, response, length, error); |
| } |
| |
| void FrameLoader::applyUserAgent(ResourceRequest& request) |
| { |
| String userAgent = client()->userAgent(request.url()); |
| ASSERT(!userAgent.isNull()); |
| request.setHTTPUserAgent(userAgent); |
| } |
| |
| bool FrameLoader::canGoBackOrForward(int distance) const |
| { |
| if (Page* page = m_frame->page()) { |
| if (distance == 0) |
| return true; |
| if (distance > 0 && distance <= page->backForwardList()->forwardListCount()) |
| return true; |
| if (distance < 0 && -distance <= page->backForwardList()->backListCount()) |
| return true; |
| } |
| return false; |
| } |
| |
| int FrameLoader::getHistoryLength() |
| { |
| if (Page* page = m_frame->page()) |
| return page->backForwardList()->backListCount() + 1; |
| return 0; |
| } |
| |
| KURL FrameLoader::historyURL(int distance) |
| { |
| if (Page* page = m_frame->page()) { |
| BackForwardList* list = page->backForwardList(); |
| HistoryItem* item = list->itemAtIndex(distance); |
| if (!item) { |
| if (distance > 0) { |
| int forwardListCount = list->forwardListCount(); |
| if (forwardListCount > 0) |
| item = list->itemAtIndex(forwardListCount); |
| } else { |
| int backListCount = list->backListCount(); |
| if (backListCount > 0) |
| item = list->itemAtIndex(-backListCount); |
| } |
| } |
| if (item) |
| return item->url(); |
| } |
| return KURL(); |
| } |
| |
| void FrameLoader::addHistoryItemForFragmentScroll() |
| { |
| addBackForwardItemClippedAtTarget(false); |
| } |
| |
| bool FrameLoader::loadProvisionalItemFromCachedPage() |
| { |
| RefPtr<CachedPage> cachedPage = pageCache()->get(m_provisionalHistoryItem.get()); |
| if (!cachedPage || !cachedPage->document()) |
| return false; |
| provisionalDocumentLoader()->loadFromCachedPage(cachedPage.release()); |
| return true; |
| } |
| |
| void FrameLoader::cachePageForHistoryItem(HistoryItem* item) |
| { |
| if (Page* page = m_frame->page()) { |
| RefPtr<CachedPage> cachedPage = CachedPage::create(page); |
| cachedPage->setTimeStampToNow(); |
| cachedPage->setDocumentLoader(documentLoader()); |
| m_client->saveDocumentViewToCachedPage(cachedPage.get()); |
| |
| pageCache()->add(item, cachedPage.release()); |
| } |
| } |
| |
| bool FrameLoader::shouldTreatURLAsSameAsCurrent(const KURL& URL) const |
| { |
| if (!m_currentHistoryItem) |
| return false; |
| return URL == m_currentHistoryItem->url() || URL == m_currentHistoryItem->originalURL(); |
| } |
| |
| PassRefPtr<HistoryItem> FrameLoader::createHistoryItem(bool useOriginal) |
| { |
| DocumentLoader* docLoader = documentLoader(); |
| |
| KURL unreachableURL = docLoader ? docLoader->unreachableURL() : KURL(); |
| |
| KURL url; |
| KURL originalURL; |
| |
| if (!unreachableURL.isEmpty()) { |
| url = unreachableURL; |
| originalURL = unreachableURL; |
| } else { |
| originalURL = docLoader ? docLoader->originalURL() : KURL(); |
| if (useOriginal) |
| url = originalURL; |
| else if (docLoader) |
| url = docLoader->requestURL(); |
| } |
| |
| LOG(History, "WebCoreHistory: Creating item for %s", url.url().ascii()); |
| |
| // Frames that have never successfully loaded any content |
| // may have no URL at all. Currently our history code can't |
| // deal with such things, so we nip that in the bud here. |
| // Later we may want to learn to live with nil for URL. |
| // See bug 3368236 and related bugs for more information. |
| if (url.isEmpty()) |
| url = KURL("about:blank"); |
| if (originalURL.isEmpty()) |
| originalURL = KURL("about:blank"); |
| |
| RefPtr<HistoryItem> item = new HistoryItem(url, m_frame->tree()->name(), m_frame->tree()->parent() ? m_frame->tree()->parent()->tree()->name() : "", docLoader ? docLoader->title() : ""); |
| item->setOriginalURLString(originalURL.url()); |
| |
| // Save form state if this is a POST |
| if (docLoader) { |
| if (useOriginal) |
| item->setFormInfoFromRequest(docLoader->originalRequest()); |
| else |
| item->setFormInfoFromRequest(docLoader->request()); |
| } |
| |
| // Set the item for which we will save document state |
| m_previousHistoryItem = m_currentHistoryItem; |
| m_currentHistoryItem = item; |
| |
| return item.release(); |
| } |
| |
| void FrameLoader::addBackForwardItemClippedAtTarget(bool doClip) |
| { |
| if (Page* page = m_frame->page()) |
| if (!documentLoader()->urlForHistory().isEmpty()) { |
| Frame* mainFrame = page->mainFrame(); |
| ASSERT(mainFrame); |
| RefPtr<HistoryItem> item = mainFrame->loader()->createHistoryItemTree(m_frame, doClip); |
| LOG(BackForward, "WebCoreBackForward - Adding backforward item %p for frame %s", item.get(), documentLoader()->URL().url().ascii()); |
| page->backForwardList()->addItem(item); |
| } |
| } |
| |
| PassRefPtr<HistoryItem> FrameLoader::createHistoryItemTree(Frame* targetFrame, bool clipAtTarget) |
| { |
| RefPtr<HistoryItem> bfItem = createHistoryItem(m_frame->tree()->parent() ? true : false); |
| if (m_previousHistoryItem) |
| saveScrollPositionAndViewStateToItem(m_previousHistoryItem.get()); |
| if (!(clipAtTarget && m_frame == targetFrame)) { |
| // save frame state for items that aren't loading (khtml doesn't save those) |
| saveDocumentState(); |
| for (Frame* child = m_frame->tree()->firstChild(); child; child = child->tree()->nextSibling()) |
| bfItem->addChildItem(child->loader()->createHistoryItemTree(targetFrame, clipAtTarget)); |
| } |
| if (m_frame == targetFrame) |
| bfItem->setIsTargetItem(true); |
| return bfItem; |
| } |
| |
| void FrameLoader::saveScrollPositionAndViewStateToItem(HistoryItem* item) |
| { |
| if (!item || !m_frame->view()) |
| return; |
| |
| item->setScrollPoint(IntPoint(m_frame->view()->contentsX(), m_frame->view()->contentsY())); |
| // FIXME: It would be great to work out a way to put this code in WebCore instead of calling through to the client. |
| m_client->saveViewStateToItem(item); |
| } |
| |
| /* |
| There is a race condition between the layout and load completion that affects restoring the scroll position. |
| We try to restore the scroll position at both the first layout and upon load completion. |
| |
| 1) If first layout happens before the load completes, we want to restore the scroll position then so that the |
| first time we draw the page is already scrolled to the right place, instead of starting at the top and later |
| jumping down. It is possible that the old scroll position is past the part of the doc laid out so far, in |
| which case the restore silent fails and we will fix it in when we try to restore on doc completion. |
| 2) If the layout happens after the load completes, the attempt to restore at load completion time silently |
| fails. We then successfully restore it when the layout happens. |
| */ |
| void FrameLoader::restoreScrollPositionAndViewState() |
| { |
| if (!m_committedFirstRealDocumentLoad) |
| return; |
| |
| ASSERT(m_currentHistoryItem); |
| |
| // FIXME: As the ASSERT attests, it seems we should always have a currentItem here. |
| // One counterexample is <rdar://problem/4917290> |
| // For now, to cover this issue in release builds, there is no technical harm to returning |
| // early and from a user standpoint - as in the above radar - the previous page load failed |
| // so there *is* no scroll or view state to restore! |
| if (!m_currentHistoryItem) |
| return; |
| |
| // FIXME: It would be great to work out a way to put this code in WebCore instead of calling |
| // through to the client. It's currently used only for the PDF view on Mac. |
| m_client->restoreViewState(); |
| |
| if (FrameView* view = m_frame->view()) |
| if (!view->wasScrolledByUser()) { |
| const IntPoint& scrollPoint = m_currentHistoryItem->scrollPoint(); |
| view->setContentsPos(scrollPoint.x(), scrollPoint.y()); |
| } |
| } |
| |
| void FrameLoader::invalidateCurrentItemCachedPage() |
| { |
| // When we are pre-commit, the currentItem is where the pageCache data resides |
| CachedPage* cachedPage = pageCache()->get(m_currentHistoryItem.get()); |
| |
| // FIXME: This is a grotesque hack to fix <rdar://problem/4059059> Crash in RenderFlow::detach |
| // Somehow the PageState object is not properly updated, and is holding onto a stale document. |
| // Both Xcode and FileMaker see this crash, Safari does not. |
| |
| ASSERT(!cachedPage || cachedPage->document() == m_frame->document()); |
| if (cachedPage && cachedPage->document() == m_frame->document()) |
| cachedPage->clear(); |
| |
| if (cachedPage) |
| pageCache()->remove(m_currentHistoryItem.get()); |
| } |
| |
| void FrameLoader::saveDocumentState() |
| { |
| if (m_creatingInitialEmptyDocument) |
| return; |
| |
| // For a standard page load, we will have a previous item set, which will be used to |
| // store the form state. However, in some cases we will have no previous item, and |
| // the current item is the right place to save the state. One example is when we |
| // detach a bunch of frames because we are navigating from a site with frames to |
| // another site. Another is when saving the frame state of a frame that is not the |
| // target of the current navigation (if we even decide to save with that granularity). |
| |
| // Because of previousItem's "masking" of currentItem for this purpose, it's important |
| // that previousItem be cleared at the end of a page transition. We leverage the |
| // checkLoadComplete recursion to achieve this goal. |
| |
| HistoryItem* item = m_previousHistoryItem ? m_previousHistoryItem.get() : m_currentHistoryItem.get(); |
| if (!item) |
| return; |
| |
| Document* document = m_frame->document(); |
| ASSERT(document); |
| |
| if (document && item->isCurrentDocument(document)) { |
| LOG(Loading, "WebCoreLoading %s: saving form state to %p", m_frame->tree()->name().domString().utf8().data(), item); |
| item->setDocumentState(document->formElementsState()); |
| } |
| } |
| |
| // Loads content into this frame, as specified by history item |
| void FrameLoader::loadItem(HistoryItem* item, FrameLoadType loadType) |
| { |
| KURL itemURL = item->url(); |
| KURL itemOriginalURL = item->originalURL(); |
| KURL currentURL; |
| if (documentLoader()) |
| currentURL = documentLoader()->URL(); |
| RefPtr<FormData> formData = item->formData(); |
| |
| // Are we navigating to an anchor within the page? |
| // Note if we have child frames we do a real reload, since the child frames might not |
| // match our current frame structure, or they might not have the right content. We could |
| // check for all that as an additional optimization. |
| // We also do not do anchor-style navigation if we're posting a form. |
| |
| if (!formData && !shouldReload(itemURL, currentURL) && urlsMatchItem(item)) { |
| // Must do this maintenance here, since we don't go through a real page reload |
| saveScrollPositionAndViewStateToItem(m_currentHistoryItem.get()); |
| |
| if (FrameView* view = m_frame->view()) |
| view->setWasScrolledByUser(false); |
| |
| m_currentHistoryItem = item; |
| |
| // FIXME: Form state might need to be saved here too. |
| |
| // We always call scrollToAnchor here, even if the URL doesn't have an |
| // anchor fragment. This is so we'll keep the WebCore Frame's URL up-to-date. |
| scrollToAnchor(item->url()); |
| |
| // must do this maintenance here, since we don't go through a real page reload |
| restoreScrollPositionAndViewState(); |
| |
| // Fake the URL change by updating the data source's request. This will no longer |
| // be necessary if we do the better fix described above. |
| documentLoader()->replaceRequestURLForAnchorScroll(itemURL); |
| |
| dispatchDidChangeLocationWithinPage(); |
| |
| // FrameLoaderClient::didFinishLoad() tells the internal load delegate the load finished with no error |
| dispatchDidFinishLoadToClient(); |
| } else { |
| // Remember this item so we can traverse any child items as child frames load |
| m_provisionalHistoryItem = item; |
| |
| bool inPageCache = false; |
| |
| // Check if we'll be using the page cache. We only use the page cache |
| // if one exists and it is less than _backForwardCacheExpirationInterval |
| // seconds old. If the cache is expired it gets flushed here. |
| if (RefPtr<CachedPage> cachedPage = pageCache()->get(item)) { |
| double interval = currentTime() - cachedPage->timeStamp(); |
| |
| // FIXME: 1800 should not be hardcoded, it should come from |
| // WebKitBackForwardCacheExpirationIntervalKey in WebKit. |
| // Or we should remove WebKitBackForwardCacheExpirationIntervalKey. |
| if (interval <= 1800) { |
| load(cachedPage->documentLoader(), loadType, 0); |
| inPageCache = true; |
| } else { |
| LOG(PageCache, "Not restoring page for %s from back/forward cache because cache entry has expired", m_provisionalHistoryItem->url().url().ascii()); |
| pageCache()->remove(item); |
| } |
| } |
| |
| if (!inPageCache) { |
| ResourceRequest request(itemURL); |
| |
| addExtraFieldsToRequest(request, true, formData); |
| |
| // If this was a repost that failed the page cache, we might try to repost the form. |
| NavigationAction action; |
| if (formData) { |
| request.setHTTPMethod("POST"); |
| request.setHTTPReferrer(item->formReferrer()); |
| request.setHTTPBody(formData); |
| request.setHTTPContentType(item->formContentType()); |
| |
| // FIXME: Slight hack to test if the NSURL cache contains the page we're going to. |
| // We want to know this before talking to the policy delegate, since it affects whether |
| // we show the DoYouReallyWantToRepost nag. |
| // |
| // This trick has a small bug (3123893) where we might find a cache hit, but then |
| // have the item vanish when we try to use it in the ensuing nav. This should be |
| // extremely rare, but in that case the user will get an error on the navigation. |
| |
| if (ResourceHandle::willLoadFromCache(request)) |
| action = NavigationAction(itemURL, loadType, false); |
| else { |
| request.setCachePolicy(ReloadIgnoringCacheData); |
| action = NavigationAction(itemURL, NavigationTypeFormResubmitted); |
| } |
| } else { |
| switch (loadType) { |
| case FrameLoadTypeReload: |
| request.setCachePolicy(ReloadIgnoringCacheData); |
| break; |
| case FrameLoadTypeBack: |
| case FrameLoadTypeForward: |
| case FrameLoadTypeIndexedBackForward: |
| if (itemURL.protocol() == "https") |
| request.setCachePolicy(ReturnCacheDataElseLoad); |
| break; |
| case FrameLoadTypeStandard: |
| case FrameLoadTypeRedirectWithLockedHistory: |
| // no-op: leave as protocol default |
| // FIXME: I wonder if we ever hit this case |
| break; |
| case FrameLoadTypeSame: |
| case FrameLoadTypeReloadAllowingStaleData: |
| default: |
| ASSERT_NOT_REACHED(); |
| } |
| |
| action = NavigationAction(itemOriginalURL, loadType, false); |
| } |
| |
| load(request, action, loadType, 0); |
| } |
| } |
| } |
| |
| // Walk the frame tree and ensure that the URLs match the URLs in the item. |
| bool FrameLoader::urlsMatchItem(HistoryItem* item) const |
| { |
| KURL currentURL = documentLoader()->URL(); |
| |
| if (!equalIgnoringRef(currentURL, item->url())) |
| return false; |
| |
| const HistoryItemVector& childItems = item->children(); |
| |
| unsigned size = childItems.size(); |
| for (unsigned i = 0; i < size; ++i) { |
| Frame* childFrame = m_frame->tree()->child(childItems[i]->target()); |
| if (childFrame && !childFrame->loader()->urlsMatchItem(childItems[i].get())) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| // Main funnel for navigating to a previous location (back/forward, non-search snap-back) |
| // This includes recursion to handle loading into framesets properly |
| void FrameLoader::goToItem(HistoryItem* targetItem, FrameLoadType type) |
| { |
| ASSERT(!m_frame->tree()->parent()); |
| |
| // shouldGoToHistoryItem is a private delegate method. This is needed to fix: |
| // <rdar://problem/3951283> can view pages from the back/forward cache that should be disallowed by Parental Controls |
| // Ultimately, history item navigations should go through the policy delegate. That's covered in: |
| // <rdar://problem/3979539> back/forward cache navigations should consult policy delegate |
| if (Page* page = m_frame->page()) |
| if (shouldGoToHistoryItem(targetItem)) { |
| BackForwardList* bfList = page->backForwardList(); |
| HistoryItem* currentItem = bfList->currentItem(); |
| |
| // Set the BF cursor before commit, which lets the user quickly click back/forward again. |
| // - plus, it only makes sense for the top level of the operation through the frametree, |
| // as opposed to happening for some/one of the page commits that might happen soon |
| bfList->goToItem(targetItem); |
| recursiveGoToItem(targetItem, currentItem, type); |
| } |
| } |
| |
| // The general idea here is to traverse the frame tree and the item tree in parallel, |
| // tracking whether each frame already has the content the item requests. If there is |
| // a match (by URL), we just restore scroll position and recurse. Otherwise we must |
| // reload that frame, and all its kids. |
| void FrameLoader::recursiveGoToItem(HistoryItem* item, HistoryItem* fromItem, FrameLoadType type) |
| { |
| ASSERT(item); |
| ASSERT(fromItem); |
| |
| KURL itemURL = item->url(); |
| KURL currentURL; |
| if (documentLoader()) |
| currentURL = documentLoader()->URL(); |
| |
| // Always reload the target frame of the item we're going to. This ensures that we will |
| // do -some- load for the transition, which means a proper notification will be posted |
| // to the app. |
| // The exact URL has to match, including fragment. We want to go through the _load |
| // method, even if to do a within-page navigation. |
| // The current frame tree and the frame tree snapshot in the item have to match. |
| if (!item->isTargetItem() && |
| itemURL == currentURL && |
| ((m_frame->tree()->name().isEmpty() && item->target().isEmpty()) || m_frame->tree()->name() == item->target()) && |
| childFramesMatchItem(item)) |
| { |
| // This content is good, so leave it alone and look for children that need reloading |
| // Save form state (works from currentItem, since prevItem is nil) |
| ASSERT(!m_previousHistoryItem); |
| saveDocumentState(); |
| saveScrollPositionAndViewStateToItem(m_currentHistoryItem.get()); |
| |
| if (FrameView* view = m_frame->view()) |
| view->setWasScrolledByUser(false); |
| |
| m_currentHistoryItem = item; |
| |
| // Restore form state (works from currentItem) |
| restoreDocumentState(); |
| |
| // Restore the scroll position (we choose to do this rather than going back to the anchor point) |
| restoreScrollPositionAndViewState(); |
| |
| const HistoryItemVector& childItems = item->children(); |
| |
| int size = childItems.size(); |
| for (int i = 0; i < size; ++i) { |
| String childName = childItems[i]->target(); |
| HistoryItem* fromChildItem = fromItem->childItemWithName(childName); |
| ASSERT(fromChildItem || fromItem->isTargetItem()); |
| Frame* childFrame = m_frame->tree()->child(childName); |
| ASSERT(childFrame); |
| childFrame->loader()->recursiveGoToItem(childItems[i].get(), fromChildItem, type); |
| } |
| } else { |
| loadItem(item, type); |
| } |
| } |
| |
| // helper method that determines whether the subframes described by the item's subitems |
| // match our own current frameset |
| bool FrameLoader::childFramesMatchItem(HistoryItem* item) const |
| { |
| const HistoryItemVector& childItems = item->children(); |
| if (childItems.size() != m_frame->tree()->childCount()) |
| return false; |
| |
| unsigned size = childItems.size(); |
| for (unsigned i = 0; i < size; ++i) |
| if (!m_frame->tree()->child(childItems[i]->target())) |
| return false; |
| |
| // Found matches for all item targets |
| return true; |
| } |
| |
| void FrameLoader::addHistoryForCurrentLocation() |
| { |
| if (!privateBrowsingEnabled()) { |
| // FIXME: <rdar://problem/4880065> - This will be a hook into the WebCore global history, and this loader/client call will be removed |
| updateGlobalHistoryForStandardLoad(documentLoader()->urlForHistory()); |
| } |
| addBackForwardItemClippedAtTarget(true); |
| } |
| |
| void FrameLoader::updateHistoryForStandardLoad() |
| { |
| LOG(History, "WebCoreHistory: Updating History for Standard Load in frame %s", documentLoader()->URL().url().ascii()); |
| |
| if (!documentLoader()->isClientRedirect()) { |
| if (!documentLoader()->urlForHistory().isEmpty()) |
| addHistoryForCurrentLocation(); |
| } else if (documentLoader()->unreachableURL().isEmpty() && m_currentHistoryItem) { |
| m_currentHistoryItem->setURL(documentLoader()->URL()); |
| m_currentHistoryItem->setFormInfoFromRequest(documentLoader()->request()); |
| } |
| } |
| |
| void FrameLoader::updateHistoryForClientRedirect() |
| { |
| #if !LOG_DISABLED |
| if (documentLoader()) |
| LOG(History, "WebCoreHistory: Updating History for client redirect in frame %s", documentLoader()->title().utf8().data()); |
| #endif |
| |
| // Clear out form data so we don't try to restore it into the incoming page. Must happen after |
| // webcore has closed the URL and saved away the form state. |
| if (m_currentHistoryItem) { |
| m_currentHistoryItem->clearDocumentState(); |
| m_currentHistoryItem->clearScrollPoint(); |
| } |
| } |
| |
| void FrameLoader::updateHistoryForBackForwardNavigation() |
| { |
| #if !LOG_DISABLED |
| if (documentLoader()) |
| LOG(History, "WebCoreHistory: Updating History for back/forward navigation in frame %s", documentLoader()->title().utf8().data()); |
| #endif |
| |
| // Must grab the current scroll position before disturbing it |
| saveScrollPositionAndViewStateToItem(m_previousHistoryItem.get()); |
| } |
| |
| void FrameLoader::updateHistoryForReload() |
| { |
| #if !LOG_DISABLED |
| if (documentLoader()) |
| LOG(History, "WebCoreHistory: Updating History for reload in frame %s", documentLoader()->title().utf8().data()); |
| #endif |
| |
| if (m_currentHistoryItem) { |
| pageCache()->remove(m_currentHistoryItem.get()); |
| |
| if (loadType() == FrameLoadTypeReload) |
| saveScrollPositionAndViewStateToItem(m_currentHistoryItem.get()); |
| |
| // Sometimes loading a page again leads to a different result because of cookies. Bugzilla 4072 |
| if (documentLoader()->unreachableURL().isEmpty()) |
| m_currentHistoryItem->setURL(documentLoader()->requestURL()); |
| } |
| |
| // FIXME: <rdar://problem/4880065> - This will be a hook into the WebCore global history, and this loader/client call will be removed |
| // Update the last visited time. Mostly interesting for URL autocompletion statistics. |
| updateGlobalHistoryForReload(documentLoader()->originalURL()); |
| } |
| |
| void FrameLoader::updateHistoryForRedirectWithLockedHistory() |
| { |
| #if !LOG_DISABLED |
| if (documentLoader()) |
| LOG(History, "WebCoreHistory: Updating History for internal load in frame %s", documentLoader()->title().utf8().data()); |
| #endif |
| |
| if (documentLoader()->isClientRedirect()) { |
| if (!m_currentHistoryItem && !m_frame->tree()->parent()) |
| addHistoryForCurrentLocation(); |
| if (m_currentHistoryItem) { |
| m_currentHistoryItem->setURL(documentLoader()->URL()); |
| m_currentHistoryItem->setFormInfoFromRequest(documentLoader()->request()); |
| } |
| } else { |
| Frame* parentFrame = m_frame->tree()->parent(); |
| if (parentFrame && parentFrame->loader()->m_currentHistoryItem) |
| parentFrame->loader()->m_currentHistoryItem->addChildItem(createHistoryItem(true)); |
| } |
| } |
| |
| void FrameLoader::updateHistoryForCommit() |
| { |
| #if !LOG_DISABLED |
| if (documentLoader()) |
| LOG(History, "WebCoreHistory: Updating History for commit in frame %s", documentLoader()->title().utf8().data()); |
| #endif |
| FrameLoadType type = loadType(); |
| if (isBackForwardLoadType(type) || |
| (type == FrameLoadTypeReload && !provisionalDocumentLoader()->unreachableURL().isEmpty())) { |
| // Once committed, we want to use current item for saving DocState, and |
| // the provisional item for restoring state. |
| // Note previousItem must be set before we close the URL, which will |
| // happen when the data source is made non-provisional below |
| m_previousHistoryItem = m_currentHistoryItem; |
| ASSERT(m_provisionalHistoryItem); |
| m_currentHistoryItem = m_provisionalHistoryItem; |
| m_provisionalHistoryItem = 0; |
| } |
| } |
| |
| // Walk the frame tree, telling all frames to save their form state into their current |
| // history item. |
| void FrameLoader::saveDocumentAndScrollState() |
| { |
| for (Frame* frame = m_frame; frame; frame = frame->tree()->traverseNext(m_frame)) { |
| frame->loader()->saveDocumentState(); |
| frame->loader()->saveScrollPositionAndViewStateToItem(frame->loader()->currentHistoryItem()); |
| } |
| } |
| |
| // FIXME: These 6 setter/getters are here for a dwindling number of users in WebKit, WebFrame |
| // being the primary one. After they're no longer needed there, they can be removed! |
| HistoryItem* FrameLoader::currentHistoryItem() |
| { |
| return m_currentHistoryItem.get(); |
| } |
| |
| HistoryItem* FrameLoader::previousHistoryItem() |
| { |
| return m_previousHistoryItem.get(); |
| } |
| |
| HistoryItem* FrameLoader::provisionalHistoryItem() |
| { |
| return m_provisionalHistoryItem.get(); |
| } |
| |
| void FrameLoader::setCurrentHistoryItem(PassRefPtr<HistoryItem> item) |
| { |
| m_currentHistoryItem = item; |
| } |
| |
| void FrameLoader::setPreviousHistoryItem(PassRefPtr<HistoryItem> item) |
| { |
| m_previousHistoryItem = item; |
| } |
| |
| void FrameLoader::setProvisionalHistoryItem(PassRefPtr<HistoryItem> item) |
| { |
| m_provisionalHistoryItem = item; |
| } |
| |
| void FrameLoader::setMainDocumentError(DocumentLoader* loader, const ResourceError& error) |
| { |
| m_client->setMainDocumentError(loader, error); |
| } |
| |
| void FrameLoader::mainReceivedCompleteError(DocumentLoader* loader, const ResourceError& error) |
| { |
| loader->setPrimaryLoadComplete(true); |
| m_client->dispatchDidLoadMainResource(activeDocumentLoader()); |
| checkCompleted(); |
| if (m_frame->page()) |
| checkLoadComplete(); |
| } |
| |
| void FrameLoader::mainReceivedError(const ResourceError& error, bool isComplete) |
| { |
| activeDocumentLoader()->mainReceivedError(error, isComplete); |
| } |
| |
| ResourceError FrameLoader::cancelledError(const ResourceRequest& request) const |
| { |
| return m_client->cancelledError(request); |
| } |
| |
| ResourceError FrameLoader::blockedError(const ResourceRequest& request) const |
| { |
| return m_client->blockedError(request); |
| } |
| |
| ResourceError FrameLoader::fileDoesNotExistError(const ResourceResponse& response) const |
| { |
| return m_client->fileDoesNotExistError(response); |
| } |
| |
| void FrameLoader::didFinishLoad(ResourceLoader* loader) |
| { |
| if (Page* page = m_frame->page()) |
| page->progress()->completeProgress(loader->identifier()); |
| dispatchDidFinishLoading(loader->documentLoader(), loader->identifier()); |
| } |
| |
| void FrameLoader::didReceiveAuthenticationChallenge(ResourceLoader* loader, const AuthenticationChallenge& currentWebChallenge) |
| { |
| m_client->dispatchDidReceiveAuthenticationChallenge(loader->documentLoader(), loader->identifier(), currentWebChallenge); |
| } |
| |
| void FrameLoader::didCancelAuthenticationChallenge(ResourceLoader* loader, const AuthenticationChallenge& currentWebChallenge) |
| { |
| m_client->dispatchDidCancelAuthenticationChallenge(loader->documentLoader(), loader->identifier(), currentWebChallenge); |
| } |
| |
| PolicyCheck::PolicyCheck() |
| : m_navigationFunction(0) |
| , m_newWindowFunction(0) |
| , m_contentFunction(0) |
| { |
| } |
| |
| void PolicyCheck::clear() |
| { |
| clearRequest(); |
| m_navigationFunction = 0; |
| m_newWindowFunction = 0; |
| m_contentFunction = 0; |
| } |
| |
| void PolicyCheck::set(const ResourceRequest& request, PassRefPtr<FormState> formState, |
| NavigationPolicyDecisionFunction function, void* argument) |
| { |
| m_request = request; |
| m_formState = formState; |
| m_frameName = String(); |
| |
| m_navigationFunction = function; |
| m_newWindowFunction = 0; |
| m_contentFunction = 0; |
| m_argument = argument; |
| } |
| |
| void PolicyCheck::set(const ResourceRequest& request, PassRefPtr<FormState> formState, |
| const String& frameName, NewWindowPolicyDecisionFunction function, void* argument) |
| { |
| m_request = request; |
| m_formState = formState; |
| m_frameName = frameName; |
| |
| m_navigationFunction = 0; |
| m_newWindowFunction = function; |
| m_contentFunction = 0; |
| m_argument = argument; |
| } |
| |
| void PolicyCheck::set(ContentPolicyDecisionFunction function, void* argument) |
| { |
| m_request = ResourceRequest(); |
| m_formState = 0; |
| m_frameName = String(); |
| |
| m_navigationFunction = 0; |
| m_newWindowFunction = 0; |
| m_contentFunction = function; |
| m_argument = argument; |
| } |
| |
| void PolicyCheck::call(bool shouldContinue) |
| { |
| if (m_navigationFunction) |
| m_navigationFunction(m_argument, m_request, m_formState.get(), shouldContinue); |
| if (m_newWindowFunction) |
| m_newWindowFunction(m_argument, m_request, m_formState.get(), m_frameName, shouldContinue); |
| ASSERT(!m_contentFunction); |
| } |
| |
| void PolicyCheck::call(PolicyAction action) |
| { |
| ASSERT(!m_navigationFunction); |
| ASSERT(!m_newWindowFunction); |
| ASSERT(m_contentFunction); |
| m_contentFunction(m_argument, action); |
| } |
| |
| void PolicyCheck::clearRequest() |
| { |
| m_request = ResourceRequest(); |
| m_formState = 0; |
| m_frameName = String(); |
| } |
| |
| void PolicyCheck::cancel() |
| { |
| clearRequest(); |
| if (m_navigationFunction) |
| m_navigationFunction(m_argument, m_request, m_formState.get(), false); |
| if (m_newWindowFunction) |
| m_newWindowFunction(m_argument, m_request, m_formState.get(), m_frameName, false); |
| if (m_contentFunction) |
| m_contentFunction(m_argument, PolicyIgnore); |
| } |
| |
| void FrameLoader::setTitle(const String& title) |
| { |
| documentLoader()->setTitle(title); |
| } |
| |
| KURL FrameLoader::originalRequestURL() const |
| { |
| return activeDocumentLoader()->initialRequest().url(); |
| } |
| |
| String FrameLoader::referrer() const |
| { |
| return documentLoader()->request().httpReferrer(); |
| } |
| |
| void FrameLoader::dispatchWindowObjectAvailable() |
| { |
| if (Settings* settings = m_frame->settings()) |
| if (settings->isJavaScriptEnabled() && m_frame->scriptProxy()->haveInterpreter()) { |
| m_client->windowObjectCleared(); |
| if (Page* page = m_frame->page()) |
| if (InspectorController* inspector = page->parentInspectorController()) |
| inspector->windowScriptObjectAvailable(); |
| } |
| } |
| |
| Widget* FrameLoader::createJavaAppletWidget(const IntSize& size, Element* element, const HashMap<String, String>& args) |
| { |
| String baseURLString; |
| Vector<String> paramNames; |
| Vector<String> paramValues; |
| HashMap<String, String>::const_iterator end = args.end(); |
| for (HashMap<String, String>::const_iterator it = args.begin(); it != end; ++it) { |
| if (it->first.lower() == "baseurl") |
| baseURLString = it->second; |
| paramNames.append(it->first); |
| paramValues.append(it->second); |
| } |
| |
| if (baseURLString.isEmpty()) |
| baseURLString = m_frame->document()->baseURL(); |
| KURL baseURL = completeURL(baseURLString); |
| |
| Widget* widget = m_client->createJavaAppletWidget(size, element, baseURL, paramNames, paramValues); |
| if(widget && m_frame->view()) |
| m_frame->view()->addChild(widget); |
| return widget; |
| } |
| |
| void FrameLoader::didChangeTitle(DocumentLoader* loader) |
| { |
| m_client->didChangeTitle(loader); |
| |
| // The title doesn't get communicated to the WebView until we are committed. |
| if (loader->isCommitted()) { |
| // Must update the entries in the back-forward list too. |
| if (m_currentHistoryItem) |
| m_currentHistoryItem->setTitle(loader->title()); |
| // This must go through the WebFrame because it has the right notion of the current b/f item. |
| m_client->setTitle(loader->title(), loader->urlForHistory()); |
| m_client->setMainFrameDocumentReady(true); // update observers with new DOMDocument |
| m_client->dispatchDidReceiveTitle(loader->title()); |
| } |
| } |
| |
| void FrameLoader::continueLoadWithData(SharedBuffer* buffer, const String& mimeType, const String& textEncoding, const KURL& url) |
| { |
| m_responseMIMEType = mimeType; |
| didOpenURL(url); |
| |
| String encoding; |
| if (m_frame) |
| encoding = documentLoader()->overrideEncoding(); |
| bool userChosen = !encoding.isNull(); |
| if (encoding.isNull()) |
| encoding = textEncoding; |
| setEncoding(encoding, userChosen); |
| |
| ASSERT(m_frame->document()); |
| |
| addData(buffer->data(), buffer->size()); |
| } |
| |
| void FrameLoader::registerURLSchemeAsLocal(const String& scheme) |
| { |
| localSchemes().add(scheme); |
| } |
| |
| bool FrameLoader::shouldTreatURLAsLocal(const String& url) |
| { |
| // This avoids an allocation of another String and the HashSet containts() |
| // call for the file: and http: schemes. |
| if (url.length() >= 5) { |
| const UChar* s = url.characters(); |
| if (s[0] == 'h' && s[1] == 't' && s[2] == 't' && s[3] == 'p' && s[4] == ':') |
| return false; |
| if (s[0] == 'f' && s[1] == 'i' && s[2] == 'l' && s[3] == 'e' && s[4] == ':') |
| return true; |
| } |
| |
| int loc = url.find(':'); |
| if (loc == -1) |
| return false; |
| |
| String scheme = url.left(loc); |
| return localSchemes().contains(scheme); |
| } |
| |
| void FrameLoader::dispatchDidCommitLoad() |
| { |
| m_client->dispatchDidCommitLoad(); |
| |
| if (Page* page = m_frame->page()) |
| page->inspectorController()->didCommitLoad(m_documentLoader.get()); |
| } |
| |
| void FrameLoader::dispatchAssignIdentifierToInitialRequest(unsigned long identifier, DocumentLoader* loader, const ResourceRequest& request) |
| { |
| m_client->assignIdentifierToInitialRequest(identifier, loader, request); |
| |
| if (Page* page = m_frame->page()) |
| page->inspectorController()->identifierForInitialRequest(identifier, loader, request); |
| } |
| |
| void FrameLoader::dispatchWillSendRequest(DocumentLoader* loader, unsigned long identifier, ResourceRequest& request, const ResourceResponse& redirectResponse) |
| { |
| m_client->dispatchWillSendRequest(loader, identifier, request, redirectResponse); |
| |
| if (Page* page = m_frame->page()) |
| page->inspectorController()->willSendRequest(loader, identifier, request, redirectResponse); |
| } |
| |
| void FrameLoader::dispatchDidReceiveResponse(DocumentLoader* loader, unsigned long identifier, const ResourceResponse& r) |
| { |
| m_client->dispatchDidReceiveResponse(loader, identifier, r); |
| |
| if (Page* page = m_frame->page()) |
| page->inspectorController()->didReceiveResponse(loader, identifier, r); |
| } |
| |
| void FrameLoader::dispatchDidReceiveContentLength(DocumentLoader* loader, unsigned long identifier, int length) |
| { |
| m_client->dispatchDidReceiveContentLength(loader, identifier, length); |
| |
| if (Page* page = m_frame->page()) |
| page->inspectorController()->didReceiveContentLength(loader, identifier, length); |
| } |
| |
| void FrameLoader::dispatchDidFinishLoading(DocumentLoader* loader, unsigned long identifier) |
| { |
| m_client->dispatchDidFinishLoading(loader, identifier); |
| |
| if (Page* page = m_frame->page()) |
| page->inspectorController()->didFinishLoading(loader, identifier); |
| } |
| |
| bool FrameLoader::dispatchDidLoadResourceFromMemoryCache(DocumentLoader* loader, const ResourceRequest& request, const ResourceResponse& response, int length) |
| { |
| bool result = m_client->dispatchDidLoadResourceFromMemoryCache(loader, request, response, length); |
| |
| if (Page* page = m_frame->page()) |
| page->inspectorController()->didLoadResourceFromMemoryCache(loader, request, response, length); |
| |
| return result; |
| } |
| |
| #if USE(LOW_BANDWIDTH_DISPLAY) |
| |
| bool FrameLoader::addLowBandwidthDisplayRequest(CachedResource* cache) |
| { |
| if (m_frame->document()->inLowBandwidthDisplay() == false) |
| return false; |
| |
| // if cache is loaded, don't add to the list, where notifyFinished() is expected. |
| if (cache->isLoaded()) |
| return false; |
| |
| switch (cache->type()) { |
| case CachedResource::CSSStyleSheet: |
| case CachedResource::Script: |
| m_needToSwitchOutLowBandwidthDisplay = true; |
| m_externalRequestsInLowBandwidthDisplay.add(cache); |
| cache->ref(this); |
| return true; |
| case CachedResource::ImageResource: |
| #if ENABLE(XSLT) |
| case CachedResource::XSLStyleSheet: |
| #endif |
| #if ENABLE(XBL) |
| case CachedResource::XBLStyleSheet: |
| #endif |
| return false; |
| } |
| |
| ASSERT_NOT_REACHED(); |
| return false; |
| } |
| |
| void FrameLoader::removeAllLowBandwidthDisplayRequests() |
| { |
| HashSet<CachedResource*>::iterator end = m_externalRequestsInLowBandwidthDisplay.end(); |
| for (HashSet<CachedResource*>::iterator it = m_externalRequestsInLowBandwidthDisplay.begin(); it != end; ++it) |
| (*it)->deref(this); |
| m_externalRequestsInLowBandwidthDisplay.clear(); |
| } |
| |
| void FrameLoader::notifyFinished(CachedResource* script) |
| { |
| HashSet<CachedResource*>::iterator it = m_externalRequestsInLowBandwidthDisplay.find(script); |
| if (it != m_externalRequestsInLowBandwidthDisplay.end()) { |
| (*it)->deref(this); |
| m_externalRequestsInLowBandwidthDisplay.remove(it); |
| switchOutLowBandwidthDisplayIfReady(); |
| } |
| } |
| |
| void FrameLoader::switchOutLowBandwidthDisplayIfReady() |
| { |
| RefPtr<Document> oldDoc = m_frame->document(); |
| if (oldDoc->inLowBandwidthDisplay()) { |
| if (!m_needToSwitchOutLowBandwidthDisplay) { |
| // no need to switch, just reset state |
| oldDoc->setLowBandwidthDisplay(false); |
| removeAllLowBandwidthDisplayRequests(); |
| m_pendingSourceInLowBandwidthDisplay = String(); |
| m_finishedParsingDuringLowBandwidthDisplay = false; |
| return; |
| } else if (m_externalRequestsInLowBandwidthDisplay.isEmpty() || |
| m_pendingSourceInLowBandwidthDisplay.length() > cMaxPendingSourceLengthInLowBandwidthDisplay) { |
| // clear the flag first |
| oldDoc->setLowBandwidthDisplay(false); |
| |
| // similar to clear(), should be refactored to share more code |
| oldDoc->cancelParsing(); |
| oldDoc->detach(); |
| if (m_frame->scriptProxy()) |
| m_frame->scriptProxy()->clear(); |
| if (m_frame->view()) |
| m_frame->view()->clear(); |
| |
| // similar to begin(), should be refactored to share more code |
| RefPtr<Document> newDoc = DOMImplementation::instance()-> |
| createDocument(m_responseMIMEType, m_frame->view(), m_frame->inViewSourceMode()); |
| m_frame->setDocument(newDoc); |
| newDoc->setURL(m_URL.url()); |
| newDoc->setBaseURL(m_URL.url()); |
| if (m_decoder) |
| newDoc->setDecoder(m_decoder.get()); |
| restoreDocumentState(); |
| partClearedInBegin(); |
| newDoc->implicitOpen(); |
| |
| // swap DocLoader ownership |
| DocLoader* docLoader = newDoc->docLoader(); |
| newDoc->setDocLoader(oldDoc->docLoader()); |
| newDoc->docLoader()->replaceDocument(newDoc.get()); |
| docLoader->replaceDocument(oldDoc.get()); |
| oldDoc->setDocLoader(docLoader); |
| |
| // drop the old doc |
| oldDoc = 0; |
| |
| // write decoded data to the new doc, similar to write() |
| if (m_pendingSourceInLowBandwidthDisplay.length()) { |
| // set cachePolicy to Cache to use the loaded resource |
| newDoc->docLoader()->setCachePolicy(CachePolicyCache); |
| newDoc->determineParseMode(m_pendingSourceInLowBandwidthDisplay); |
| if (m_decoder->encoding().usesVisualOrdering()) |
| newDoc->setVisuallyOrdered(); |
| newDoc->recalcStyle(Node::Force); |
| newDoc->tokenizer()->write(m_pendingSourceInLowBandwidthDisplay, true); |
| |
| if (m_finishedParsingDuringLowBandwidthDisplay) |
| newDoc->finishParsing(); |
| } |
| |
| // update rendering |
| newDoc->updateRendering(); |
| |
| // reset states |
| removeAllLowBandwidthDisplayRequests(); |
| m_pendingSourceInLowBandwidthDisplay = String(); |
| m_finishedParsingDuringLowBandwidthDisplay = false; |
| m_needToSwitchOutLowBandwidthDisplay = false; |
| } |
| } |
| } |
| |
| #endif |
| |
| } // namespace WebCore |