| /* |
| * Copyright (C) 2007-2020 Apple Inc. All rights reserved. |
| * |
| * 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 INC. OR |
| * 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 "DragController.h" |
| |
| #include "HTMLAnchorElement.h" |
| #include "SVGAElement.h" |
| |
| #if ENABLE(DRAG_SUPPORT) |
| #include "CachedImage.h" |
| #include "CachedResourceLoader.h" |
| #include "ColorSerialization.h" |
| #include "DataTransfer.h" |
| #include "Document.h" |
| #include "DocumentFragment.h" |
| #include "DragActions.h" |
| #include "DragClient.h" |
| #include "DragData.h" |
| #include "DragImage.h" |
| #include "DragState.h" |
| #include "Editing.h" |
| #include "Editor.h" |
| #include "EditorClient.h" |
| #include "ElementAncestorIterator.h" |
| #include "EventHandler.h" |
| #include "File.h" |
| #include "FloatRect.h" |
| #include "FocusController.h" |
| #include "Frame.h" |
| #include "FrameLoadRequest.h" |
| #include "FrameLoader.h" |
| #include "FrameSelection.h" |
| #include "FrameView.h" |
| #include "HTMLAttachmentElement.h" |
| #include "HTMLImageElement.h" |
| #include "HTMLInputElement.h" |
| #include "HTMLParserIdioms.h" |
| #include "HTMLPlugInElement.h" |
| #include "HitTestRequest.h" |
| #include "HitTestResult.h" |
| #include "Image.h" |
| #include "ImageOrientation.h" |
| #include "MoveSelectionCommand.h" |
| #include "Page.h" |
| #include "Pasteboard.h" |
| #include "PlatformKeyboardEvent.h" |
| #include "PluginDocument.h" |
| #include "PluginViewBase.h" |
| #include "Position.h" |
| #include "PromisedAttachmentInfo.h" |
| #include "RenderAttachment.h" |
| #include "RenderFileUploadControl.h" |
| #include "RenderImage.h" |
| #include "RenderView.h" |
| #include "ReplaceSelectionCommand.h" |
| #include "ResourceRequest.h" |
| #include "SecurityOrigin.h" |
| #include "Settings.h" |
| #include "ShadowRoot.h" |
| #include "SimpleRange.h" |
| #include "StyleProperties.h" |
| #include "Text.h" |
| #include "TextEvent.h" |
| #include "VisiblePosition.h" |
| #include "WebContentReader.h" |
| #include "markup.h" |
| #include <wtf/SetForScope.h> |
| #endif |
| |
| #if ENABLE(DATA_DETECTION) |
| #include "DataDetection.h" |
| #endif |
| |
| #if ENABLE(DATA_INTERACTION) |
| #include "SelectionRect.h" |
| #endif |
| |
| namespace WebCore { |
| |
| bool isDraggableLink(const Element& element) |
| { |
| if (is<HTMLAnchorElement>(element)) { |
| auto& anchorElement = downcast<HTMLAnchorElement>(element); |
| if (!anchorElement.isLiveLink()) |
| return false; |
| #if ENABLE(DATA_DETECTION) |
| return !DataDetection::isDataDetectorURL(anchorElement.href()); |
| #else |
| return true; |
| #endif |
| } |
| if (is<SVGAElement>(element)) |
| return element.isLink(); |
| return false; |
| } |
| |
| #if ENABLE(DRAG_SUPPORT) |
| |
| static PlatformMouseEvent createMouseEvent(const DragData& dragData) |
| { |
| bool shiftKey = false; |
| bool ctrlKey = false; |
| bool altKey = false; |
| bool metaKey = false; |
| |
| PlatformKeyboardEvent::getCurrentModifierState(shiftKey, ctrlKey, altKey, metaKey); |
| |
| return PlatformMouseEvent(dragData.clientPosition(), dragData.globalPosition(), |
| LeftButton, PlatformEvent::MouseMoved, 0, shiftKey, ctrlKey, altKey, |
| metaKey, WallTime::now(), ForceAtClick, NoTap); |
| } |
| |
| DragController::DragController(Page& page, std::unique_ptr<DragClient>&& client) |
| : m_page(page) |
| , m_client(WTFMove(client)) |
| { |
| } |
| |
| DragController::~DragController() = default; |
| |
| static RefPtr<DocumentFragment> documentFragmentFromDragData(const DragData& dragData, Frame& frame, Range& context, bool allowPlainText, bool& chosePlainText) |
| { |
| chosePlainText = false; |
| |
| Document& document = context.ownerDocument(); |
| if (dragData.containsCompatibleContent()) { |
| if (auto fragment = frame.editor().webContentFromPasteboard(*Pasteboard::createForDragAndDrop(dragData), context, allowPlainText, chosePlainText)) |
| return fragment; |
| |
| if (dragData.containsURL(DragData::DoNotConvertFilenames)) { |
| String title; |
| String url = dragData.asURL(DragData::DoNotConvertFilenames, &title); |
| if (!url.isEmpty()) { |
| auto anchor = HTMLAnchorElement::create(document); |
| anchor->setHref(url); |
| if (title.isEmpty()) { |
| // Try the plain text first because the url might be normalized or escaped. |
| if (dragData.containsPlainText()) |
| title = dragData.asPlainText(); |
| if (title.isEmpty()) |
| title = url; |
| } |
| anchor->appendChild(document.createTextNode(title)); |
| auto fragment = document.createDocumentFragment(); |
| fragment->appendChild(anchor); |
| return fragment; |
| } |
| } |
| } |
| if (allowPlainText && dragData.containsPlainText()) { |
| chosePlainText = true; |
| return createFragmentFromText(context, dragData.asPlainText()).ptr(); |
| } |
| |
| return nullptr; |
| } |
| |
| #if !PLATFORM(IOS_FAMILY) |
| |
| DragOperation DragController::platformGenericDragOperation() |
| { |
| return DragOperation::Move; |
| } |
| |
| #endif |
| |
| bool DragController::dragIsMove(FrameSelection& selection, const DragData& dragData) |
| { |
| const VisibleSelection& visibleSelection = selection.selection(); |
| return m_documentUnderMouse == m_dragInitiator && visibleSelection.isContentEditable() && visibleSelection.isRange() && !isCopyKeyDown(dragData); |
| } |
| |
| void DragController::clearDragCaret() |
| { |
| m_page.dragCaretController().clear(); |
| } |
| |
| void DragController::dragEnded() |
| { |
| m_dragInitiator = nullptr; |
| m_didInitiateDrag = false; |
| m_documentUnderMouse = nullptr; |
| clearDragCaret(); |
| removeAllDroppedImagePlaceholders(); |
| |
| client().dragEnded(); |
| } |
| |
| Optional<DragOperation> DragController::dragEntered(const DragData& dragData) |
| { |
| return dragEnteredOrUpdated(dragData); |
| } |
| |
| void DragController::dragExited(const DragData& dragData) |
| { |
| auto& mainFrame = m_page.mainFrame(); |
| if (mainFrame.view()) |
| mainFrame.eventHandler().cancelDragAndDrop(createMouseEvent(dragData), Pasteboard::createForDragAndDrop(dragData), dragData.draggingSourceOperationMask(), dragData.containsFiles()); |
| mouseMovedIntoDocument(nullptr); |
| if (m_fileInputElementUnderMouse) |
| m_fileInputElementUnderMouse->setCanReceiveDroppedFiles(false); |
| m_fileInputElementUnderMouse = nullptr; |
| } |
| |
| Optional<DragOperation> DragController::dragUpdated(const DragData& dragData) |
| { |
| return dragEnteredOrUpdated(dragData); |
| } |
| |
| inline static bool dragIsHandledByDocument(DragHandlingMethod dragHandlingMethod) |
| { |
| return dragHandlingMethod != DragHandlingMethod::None && dragHandlingMethod != DragHandlingMethod::PageLoad; |
| } |
| |
| bool DragController::performDragOperation(const DragData& dragData) |
| { |
| if (!m_droppedImagePlaceholders.isEmpty() && m_droppedImagePlaceholderRange && tryToUpdateDroppedImagePlaceholders(dragData)) { |
| m_droppedImagePlaceholders.clear(); |
| m_droppedImagePlaceholderRange = nullptr; |
| m_documentUnderMouse = nullptr; |
| clearDragCaret(); |
| return true; |
| } |
| |
| removeAllDroppedImagePlaceholders(); |
| |
| SetForScope<bool> isPerformingDrop(m_isPerformingDrop, true); |
| IgnoreSelectionChangeForScope ignoreSelectionChanges { m_page.focusController().focusedOrMainFrame() }; |
| |
| m_documentUnderMouse = m_page.mainFrame().documentAtPoint(dragData.clientPosition()); |
| |
| ShouldOpenExternalURLsPolicy shouldOpenExternalURLsPolicy = ShouldOpenExternalURLsPolicy::ShouldNotAllow; |
| if (m_documentUnderMouse) |
| shouldOpenExternalURLsPolicy = m_documentUnderMouse->shouldOpenExternalURLsPolicyToPropagate(); |
| |
| if ((m_dragDestinationActionMask.contains(DragDestinationAction::DHTML)) && dragIsHandledByDocument(m_dragHandlingMethod)) { |
| client().willPerformDragDestinationAction(DragDestinationAction::DHTML, dragData); |
| Ref<Frame> mainFrame(m_page.mainFrame()); |
| bool preventedDefault = false; |
| if (mainFrame->view()) |
| preventedDefault = mainFrame->eventHandler().performDragAndDrop(createMouseEvent(dragData), Pasteboard::createForDragAndDrop(dragData), dragData.draggingSourceOperationMask(), dragData.containsFiles()); |
| if (preventedDefault) { |
| clearDragCaret(); |
| m_documentUnderMouse = nullptr; |
| return true; |
| } |
| } |
| |
| if ((m_dragDestinationActionMask.contains(DragDestinationAction::Edit)) && concludeEditDrag(dragData)) { |
| client().didConcludeEditDrag(); |
| m_documentUnderMouse = nullptr; |
| clearDragCaret(); |
| return true; |
| } |
| |
| m_documentUnderMouse = nullptr; |
| clearDragCaret(); |
| |
| if (!operationForLoad(dragData)) |
| return false; |
| |
| auto urlString = dragData.asURL(); |
| if (urlString.isEmpty()) |
| return false; |
| |
| client().willPerformDragDestinationAction(DragDestinationAction::Load, dragData); |
| FrameLoadRequest frameLoadRequest { m_page.mainFrame(), ResourceRequest { urlString } }; |
| frameLoadRequest.setShouldOpenExternalURLsPolicy(shouldOpenExternalURLsPolicy); |
| frameLoadRequest.setIsRequestFromClientOrUserInput(); |
| m_page.mainFrame().loader().load(WTFMove(frameLoadRequest)); |
| return true; |
| } |
| |
| void DragController::mouseMovedIntoDocument(Document* newDocument) |
| { |
| if (m_documentUnderMouse == newDocument) |
| return; |
| |
| // If we were over another document clear the selection |
| if (m_documentUnderMouse) |
| clearDragCaret(); |
| m_documentUnderMouse = newDocument; |
| } |
| |
| Optional<DragOperation> DragController::dragEnteredOrUpdated(const DragData& dragData) |
| { |
| mouseMovedIntoDocument(m_page.mainFrame().documentAtPoint(dragData.clientPosition())); |
| |
| m_dragDestinationActionMask = dragData.dragDestinationActionMask(); |
| if (m_dragDestinationActionMask.isEmpty()) { |
| clearDragCaret(); // FIXME: Why not call mouseMovedIntoDocument(nullptr)? |
| return WTF::nullopt; |
| } |
| |
| Optional<DragOperation> dragOperation; |
| m_dragHandlingMethod = tryDocumentDrag(dragData, m_dragDestinationActionMask, dragOperation); |
| if (m_dragHandlingMethod == DragHandlingMethod::None && (m_dragDestinationActionMask.contains(DragDestinationAction::Load))) { |
| dragOperation = operationForLoad(dragData); |
| if (dragOperation) |
| m_dragHandlingMethod = DragHandlingMethod::PageLoad; |
| } else if (m_dragHandlingMethod == DragHandlingMethod::SetColor) |
| dragOperation = DragOperation::Copy; |
| |
| updateSupportedTypeIdentifiersForDragHandlingMethod(m_dragHandlingMethod, dragData); |
| return dragOperation; |
| } |
| |
| static HTMLInputElement* asFileInput(Node& node) |
| { |
| if (!is<HTMLInputElement>(node)) |
| return nullptr; |
| |
| auto* inputElement = &downcast<HTMLInputElement>(node); |
| |
| // If this is a button inside of the a file input, move up to the file input. |
| if (inputElement->isTextButton() && is<ShadowRoot>(inputElement->treeScope().rootNode())) { |
| auto& host = *downcast<ShadowRoot>(inputElement->treeScope().rootNode()).host(); |
| inputElement = is<HTMLInputElement>(host) ? &downcast<HTMLInputElement>(host) : nullptr; |
| } |
| |
| return inputElement && inputElement->isFileUpload() ? inputElement : nullptr; |
| } |
| |
| #if ENABLE(INPUT_TYPE_COLOR) |
| |
| static bool isEnabledColorInput(Node& node) |
| { |
| if (!is<HTMLInputElement>(node)) |
| return false; |
| auto& input = downcast<HTMLInputElement>(node); |
| return input.isColorControl() && !input.isDisabledFormControl(); |
| } |
| |
| static bool isInShadowTreeOfEnabledColorInput(Node& node) |
| { |
| auto* host = node.shadowHost(); |
| return host && isEnabledColorInput(*host); |
| } |
| |
| #endif |
| |
| // This can return null if an empty document is loaded. |
| static Element* elementUnderMouse(Document* documentUnderMouse, const IntPoint& p) |
| { |
| Frame* frame = documentUnderMouse->frame(); |
| float zoomFactor = frame ? frame->pageZoomFactor() : 1; |
| LayoutPoint point(p.x() * zoomFactor, p.y() * zoomFactor); |
| |
| HitTestResult result(point); |
| documentUnderMouse->hitTest(HitTestRequest(), result); |
| |
| auto* node = result.innerNode(); |
| if (!node) |
| return nullptr; |
| // FIXME: Use parentElementInComposedTree here. |
| auto* element = is<Element>(*node) ? &downcast<Element>(*node) : node->parentElement(); |
| auto* host = element->shadowHost(); |
| return host ? host : element; |
| } |
| |
| #if !ENABLE(DATA_INTERACTION) |
| |
| void DragController::updateSupportedTypeIdentifiersForDragHandlingMethod(DragHandlingMethod, const DragData&) const |
| { |
| } |
| |
| #endif |
| |
| DragHandlingMethod DragController::tryDocumentDrag(const DragData& dragData, OptionSet<DragDestinationAction> destinationActionMask, Optional<DragOperation>& dragOperation) |
| { |
| if (!m_documentUnderMouse) |
| return DragHandlingMethod::None; |
| |
| if (m_dragInitiator && !m_documentUnderMouse->securityOrigin().canReceiveDragData(m_dragInitiator->securityOrigin())) |
| return DragHandlingMethod::None; |
| |
| bool isHandlingDrag = false; |
| if (destinationActionMask.contains(DragDestinationAction::DHTML)) { |
| isHandlingDrag = tryDHTMLDrag(dragData, dragOperation); |
| // Do not continue if m_documentUnderMouse has been reset by tryDHTMLDrag. |
| // tryDHTMLDrag fires dragenter event. The event listener that listens |
| // to this event may create a nested message loop (open a modal dialog), |
| // which could process dragleave event and reset m_documentUnderMouse in |
| // dragExited. |
| if (!m_documentUnderMouse) |
| return DragHandlingMethod::None; |
| } |
| |
| // It's unclear why this check is after tryDHTMLDrag. |
| // We send drag events in tryDHTMLDrag and that may be the reason. |
| RefPtr<FrameView> frameView = m_documentUnderMouse->view(); |
| if (!frameView) |
| return DragHandlingMethod::None; |
| |
| if (isHandlingDrag) { |
| clearDragCaret(); |
| m_numberOfItemsToBeAccepted = dragData.numberOfFiles(); |
| return DragHandlingMethod::NonDefault; |
| } |
| |
| if (destinationActionMask.contains(DragDestinationAction::Edit) && canProcessDrag(dragData)) { |
| if (dragData.containsColor()) { |
| dragOperation = DragOperation::Generic; |
| return DragHandlingMethod::SetColor; |
| } |
| |
| IntPoint point = frameView->windowToContents(dragData.clientPosition()); |
| Element* element = elementUnderMouse(m_documentUnderMouse.get(), point); |
| if (!element) |
| return DragHandlingMethod::None; |
| |
| HTMLInputElement* elementAsFileInput = asFileInput(*element); |
| if (m_fileInputElementUnderMouse != elementAsFileInput) { |
| if (m_fileInputElementUnderMouse) |
| m_fileInputElementUnderMouse->setCanReceiveDroppedFiles(false); |
| m_fileInputElementUnderMouse = elementAsFileInput; |
| } |
| |
| if (!m_fileInputElementUnderMouse) |
| m_page.dragCaretController().setCaretPosition(m_documentUnderMouse->frame()->visiblePositionForPoint(point)); |
| else |
| clearDragCaret(); |
| |
| Frame* innerFrame = element->document().frame(); |
| dragOperation = dragIsMove(innerFrame->selection(), dragData) ? DragOperation::Move : DragOperation::Copy; |
| |
| unsigned numberOfFiles = dragData.numberOfFiles(); |
| if (m_fileInputElementUnderMouse) { |
| if (m_fileInputElementUnderMouse->isDisabledFormControl()) |
| m_numberOfItemsToBeAccepted = 0; |
| else if (m_fileInputElementUnderMouse->multiple()) |
| m_numberOfItemsToBeAccepted = numberOfFiles; |
| else if (numberOfFiles > 1) |
| m_numberOfItemsToBeAccepted = 0; |
| else |
| m_numberOfItemsToBeAccepted = 1; |
| |
| if (!m_numberOfItemsToBeAccepted) |
| dragOperation = WTF::nullopt; |
| m_fileInputElementUnderMouse->setCanReceiveDroppedFiles(m_numberOfItemsToBeAccepted); |
| } else { |
| // We are not over a file input element. The dragged item(s) will loaded into the view, |
| // dropped as text paths on other input elements, or handled by script on the page. |
| m_numberOfItemsToBeAccepted = numberOfFiles; |
| } |
| |
| if (m_fileInputElementUnderMouse) |
| return DragHandlingMethod::UploadFile; |
| |
| if (m_page.dragCaretController().isContentRichlyEditable()) |
| return DragHandlingMethod::EditRichText; |
| |
| return DragHandlingMethod::EditPlainText; |
| } |
| |
| // We are not over an editable region. Make sure we're clearing any prior drag cursor. |
| clearDragCaret(); |
| if (m_fileInputElementUnderMouse) |
| m_fileInputElementUnderMouse->setCanReceiveDroppedFiles(false); |
| m_fileInputElementUnderMouse = nullptr; |
| return DragHandlingMethod::None; |
| } |
| |
| OptionSet<DragSourceAction> DragController::delegateDragSourceAction(const IntPoint& rootViewPoint) |
| { |
| m_dragSourceAction = client().dragSourceActionMaskForPoint(rootViewPoint); |
| return m_dragSourceAction; |
| } |
| |
| Optional<DragOperation> DragController::operationForLoad(const DragData& dragData) |
| { |
| Document* document = m_page.mainFrame().documentAtPoint(dragData.clientPosition()); |
| |
| bool pluginDocumentAcceptsDrags = false; |
| |
| if (is<PluginDocument>(document)) { |
| const Widget* widget = downcast<PluginDocument>(*document).pluginWidget(); |
| const PluginViewBase* pluginView = is<PluginViewBase>(widget) ? downcast<PluginViewBase>(widget) : nullptr; |
| |
| if (pluginView) |
| pluginDocumentAcceptsDrags = pluginView->shouldAllowNavigationFromDrags(); |
| } |
| |
| if (document && (m_didInitiateDrag || (is<PluginDocument>(*document) && !pluginDocumentAcceptsDrags) || document->hasEditableStyle())) |
| return WTF::nullopt; |
| return dragOperation(dragData); |
| } |
| |
| static bool setSelectionToDragCaret(Frame* frame, VisibleSelection& dragCaret, const IntPoint& point) |
| { |
| Ref<Frame> protector(*frame); |
| frame->selection().setSelection(dragCaret); |
| if (frame->selection().selection().isNone()) { |
| dragCaret = frame->visiblePositionForPoint(point); |
| frame->selection().setSelection(dragCaret); |
| } |
| return !frame->selection().isNone() && frame->selection().selection().isContentEditable(); |
| } |
| |
| bool DragController::dispatchTextInputEventFor(Frame* innerFrame, const DragData& dragData) |
| { |
| ASSERT(m_page.dragCaretController().hasCaret()); |
| String text = m_page.dragCaretController().isContentRichlyEditable() ? emptyString() : dragData.asPlainText(); |
| Element* target = innerFrame->editor().findEventTargetFrom(m_page.dragCaretController().caretPosition()); |
| // FIXME: What guarantees target is not null? |
| auto event = TextEvent::createForDrop(&innerFrame->windowProxy(), text); |
| target->dispatchEvent(event); |
| return !event->defaultPrevented(); |
| } |
| |
| bool DragController::concludeEditDrag(const DragData& dragData) |
| { |
| RefPtr<HTMLInputElement> fileInput = m_fileInputElementUnderMouse; |
| if (m_fileInputElementUnderMouse) { |
| m_fileInputElementUnderMouse->setCanReceiveDroppedFiles(false); |
| m_fileInputElementUnderMouse = nullptr; |
| } |
| |
| if (!m_documentUnderMouse) |
| return false; |
| |
| IntPoint point = m_documentUnderMouse->view()->windowToContents(dragData.clientPosition()); |
| Element* element = elementUnderMouse(m_documentUnderMouse.get(), point); |
| if (!element) |
| return false; |
| RefPtr<Frame> innerFrame = element->document().frame(); |
| ASSERT(innerFrame); |
| |
| if (m_page.dragCaretController().hasCaret() && !dispatchTextInputEventFor(innerFrame.get(), dragData)) |
| return true; |
| |
| if (dragData.containsColor()) { |
| Color color = dragData.asColor(); |
| if (!color.isValid()) |
| return false; |
| #if ENABLE(INPUT_TYPE_COLOR) |
| if (isEnabledColorInput(*element)) { |
| auto& input = downcast<HTMLInputElement>(*element); |
| input.setValue(serializationForHTML(color), DispatchInputAndChangeEvent); |
| return true; |
| } |
| #endif |
| auto innerRange = innerFrame->selection().selection().toNormalizedRange(); |
| if (!innerRange) |
| return false; |
| auto style = MutableStyleProperties::create(); |
| style->setProperty(CSSPropertyColor, serializationForHTML(color), false); |
| if (!innerFrame->editor().shouldApplyStyle(style.ptr(), createLiveRange(innerRange).get())) |
| return false; |
| client().willPerformDragDestinationAction(DragDestinationAction::Edit, dragData); |
| innerFrame->editor().applyStyle(style.ptr(), EditAction::SetColor); |
| return true; |
| } |
| |
| if (dragData.containsFiles() && fileInput) { |
| // fileInput should be the element we hit tested for, unless it was made |
| // display:none in a drop event handler. |
| ASSERT(fileInput == element || !fileInput->renderer()); |
| if (fileInput->isDisabledFormControl()) |
| return false; |
| |
| return fileInput->receiveDroppedFiles(dragData); |
| } |
| |
| if (!m_page.dragController().canProcessDrag(dragData)) |
| return false; |
| |
| VisibleSelection dragCaret = m_page.dragCaretController().caretPosition(); |
| auto range = dragCaret.toNormalizedRange(); |
| RefPtr<Element> rootEditableElement = innerFrame->selection().selection().rootEditableElement(); |
| |
| // For range to be null a WebKit client must have done something bad while |
| // manually controlling drag behaviour |
| if (!range) |
| return false; |
| |
| ResourceCacheValidationSuppressor validationSuppressor(range->start.document().cachedResourceLoader()); |
| auto& editor = innerFrame->editor(); |
| bool isMove = dragIsMove(innerFrame->selection(), dragData); |
| if (isMove || dragCaret.isContentRichlyEditable()) { |
| bool chosePlainText = false; |
| RefPtr<DocumentFragment> fragment = documentFragmentFromDragData(dragData, *innerFrame, createLiveRange(*range), true, chosePlainText); |
| if (!fragment || !editor.shouldInsertFragment(*fragment, createLiveRange(range).get(), EditorInsertAction::Dropped)) |
| return false; |
| |
| client().willPerformDragDestinationAction(DragDestinationAction::Edit, dragData); |
| |
| if (editor.client() && editor.client()->performTwoStepDrop(*fragment, createLiveRange(*range), isMove)) |
| return true; |
| |
| if (isMove) { |
| // NSTextView behavior is to always smart delete on moving a selection, |
| // but only to smart insert if the selection granularity is word granularity. |
| bool smartDelete = editor.smartInsertDeleteEnabled(); |
| bool smartInsert = smartDelete && innerFrame->selection().granularity() == TextGranularity::WordGranularity && dragData.canSmartReplace(); |
| MoveSelectionCommand::create(fragment.releaseNonNull(), dragCaret.base(), smartInsert, smartDelete)->apply(); |
| } else { |
| if (setSelectionToDragCaret(innerFrame.get(), dragCaret, point)) { |
| OptionSet<ReplaceSelectionCommand::CommandOption> options { ReplaceSelectionCommand::SelectReplacement, ReplaceSelectionCommand::PreventNesting }; |
| if (dragData.canSmartReplace()) |
| options.add(ReplaceSelectionCommand::SmartReplace); |
| if (chosePlainText) |
| options.add(ReplaceSelectionCommand::MatchStyle); |
| ReplaceSelectionCommand::create(*m_documentUnderMouse, fragment.releaseNonNull(), options, EditAction::InsertFromDrop)->apply(); |
| } |
| } |
| } else { |
| String text = dragData.asPlainText(); |
| if (text.isEmpty() || !editor.shouldInsertText(text, createLiveRange(*range).ptr(), EditorInsertAction::Dropped)) |
| return false; |
| |
| client().willPerformDragDestinationAction(DragDestinationAction::Edit, dragData); |
| auto fragment = createFragmentFromText(createLiveRange(*range), text); |
| if (editor.client() && editor.client()->performTwoStepDrop(fragment.get(), createLiveRange(*range), isMove)) |
| return true; |
| |
| if (setSelectionToDragCaret(innerFrame.get(), dragCaret, point)) |
| ReplaceSelectionCommand::create(*m_documentUnderMouse, WTFMove(fragment), { ReplaceSelectionCommand::SelectReplacement, ReplaceSelectionCommand::MatchStyle, ReplaceSelectionCommand::PreventNesting }, EditAction::InsertFromDrop)->apply(); |
| } |
| |
| if (rootEditableElement) { |
| if (Frame* frame = rootEditableElement->document().frame()) |
| frame->eventHandler().updateDragStateAfterEditDragIfNeeded(*rootEditableElement); |
| } |
| |
| return true; |
| } |
| |
| bool DragController::canProcessDrag(const DragData& dragData) |
| { |
| IntPoint point = m_page.mainFrame().view()->windowToContents(dragData.clientPosition()); |
| HitTestResult result = HitTestResult(point); |
| if (!m_page.mainFrame().contentRenderer()) |
| return false; |
| |
| constexpr OptionSet<HitTestRequest::RequestType> hitType { HitTestRequest::ReadOnly, HitTestRequest::Active, HitTestRequest::AllowChildFrameContent }; |
| result = m_page.mainFrame().eventHandler().hitTestResultAtPoint(point, hitType); |
| |
| auto* dragNode = result.innerNonSharedNode(); |
| if (!dragNode) |
| return false; |
| |
| DragData::DraggingPurpose dragPurpose = DragData::DraggingPurpose::ForEditing; |
| if (asFileInput(*dragNode)) |
| dragPurpose = DragData::DraggingPurpose::ForFileUpload; |
| #if ENABLE(INPUT_TYPE_COLOR) |
| else if (isEnabledColorInput(*dragNode) || isInShadowTreeOfEnabledColorInput(*dragNode)) |
| dragPurpose = DragData::DraggingPurpose::ForColorControl; |
| #endif |
| |
| if (!dragData.containsCompatibleContent(dragPurpose)) |
| return false; |
| |
| if (dragPurpose == DragData::DraggingPurpose::ForFileUpload) |
| return true; |
| |
| #if ENABLE(INPUT_TYPE_COLOR) |
| if (dragPurpose == DragData::DraggingPurpose::ForColorControl) |
| return true; |
| #endif |
| |
| if (is<HTMLPlugInElement>(*dragNode)) { |
| if (!downcast<HTMLPlugInElement>(*dragNode).canProcessDrag() && !dragNode->hasEditableStyle()) |
| return false; |
| } else if (!dragNode->hasEditableStyle()) |
| return false; |
| |
| if (m_didInitiateDrag && m_documentUnderMouse == m_dragInitiator && result.isSelected()) |
| return false; |
| |
| return true; |
| } |
| |
| static Optional<DragOperation> defaultOperationForDrag(OptionSet<DragOperation> sourceOperationMask) |
| { |
| // This is designed to match IE's operation fallback for the case where |
| // the page calls preventDefault() in a drag event but doesn't set dropEffect. |
| if (sourceOperationMask.containsAll({ DragOperation::Copy, DragOperation::Link, DragOperation::Generic, DragOperation::Private, DragOperation::Move, DragOperation::Delete })) |
| return DragOperation::Copy; |
| if (sourceOperationMask.isEmpty()) |
| return WTF::nullopt; |
| if (sourceOperationMask.contains(DragOperation::Move)) |
| return DragOperation::Move; |
| if (sourceOperationMask.contains(DragOperation::Generic)) |
| return DragController::platformGenericDragOperation(); |
| if (sourceOperationMask.contains(DragOperation::Copy)) |
| return DragOperation::Copy; |
| if (sourceOperationMask.contains(DragOperation::Link)) |
| return DragOperation::Link; |
| |
| // FIXME: Does IE really return "generic" even if no operations were allowed by the source? |
| return DragOperation::Generic; |
| } |
| |
| bool DragController::tryDHTMLDrag(const DragData& dragData, Optional<DragOperation>& operation) |
| { |
| ASSERT(m_documentUnderMouse); |
| Ref<Frame> mainFrame(m_page.mainFrame()); |
| RefPtr<FrameView> viewProtector = mainFrame->view(); |
| if (!viewProtector) |
| return false; |
| |
| auto sourceOperationMask = dragData.draggingSourceOperationMask(); |
| auto targetResponse = mainFrame->eventHandler().updateDragAndDrop(createMouseEvent(dragData), [&dragData]() { |
| return Pasteboard::createForDragAndDrop(dragData); |
| }, sourceOperationMask, dragData.containsFiles()); |
| if (!targetResponse.accept) |
| return false; |
| |
| if (!targetResponse.operationMask) |
| operation = defaultOperationForDrag(sourceOperationMask); |
| else if (!sourceOperationMask.containsAny(targetResponse.operationMask.value())) // The element picked an operation which is not supported by the source. |
| operation = WTF::nullopt; |
| else |
| operation = defaultOperationForDrag(targetResponse.operationMask.value()); |
| |
| return true; |
| } |
| |
| static bool imageElementIsDraggable(const HTMLImageElement& image, const Frame& sourceFrame) |
| { |
| if (sourceFrame.settings().loadsImagesAutomatically()) |
| return true; |
| |
| auto* renderer = image.renderer(); |
| if (!is<RenderImage>(renderer)) |
| return false; |
| |
| auto* cachedImage = downcast<RenderImage>(*renderer).cachedImage(); |
| return cachedImage && !cachedImage->errorOccurred() && cachedImage->imageForRenderer(renderer); |
| } |
| |
| #if ENABLE(ATTACHMENT_ELEMENT) |
| |
| static RefPtr<HTMLAttachmentElement> enclosingAttachmentElement(Element& element) |
| { |
| if (is<HTMLAttachmentElement>(element)) |
| return downcast<HTMLAttachmentElement>(&element); |
| |
| if (is<HTMLAttachmentElement>(element.parentOrShadowHostElement())) |
| return downcast<HTMLAttachmentElement>(element.parentOrShadowHostElement()); |
| |
| return { }; |
| } |
| |
| #endif |
| |
| Element* DragController::draggableElement(const Frame* sourceFrame, Element* startElement, const IntPoint& dragOrigin, DragState& state) const |
| { |
| state.type = sourceFrame->selection().contains(dragOrigin) ? DragSourceAction::Selection : OptionSet<DragSourceAction>({ }); |
| if (!startElement) |
| return nullptr; |
| #if ENABLE(ATTACHMENT_ELEMENT) |
| if (auto attachment = enclosingAttachmentElement(*startElement)) { |
| auto selection = sourceFrame->selection().selection(); |
| bool isSingleAttachmentSelection = selection.start() == Position(attachment.get(), Position::PositionIsBeforeAnchor) && selection.end() == Position(attachment.get(), Position::PositionIsAfterAnchor); |
| bool isAttachmentElementInCurrentSelection = false; |
| if (auto selectedRange = selection.toNormalizedRange()) { |
| auto compareResult = createLiveRange(*selectedRange)->compareNode(*attachment); |
| isAttachmentElementInCurrentSelection = !compareResult.hasException() && compareResult.releaseReturnValue() == Range::NODE_INSIDE; |
| } |
| |
| if (!isAttachmentElementInCurrentSelection || isSingleAttachmentSelection) { |
| state.type = DragSourceAction::Attachment; |
| return attachment.get(); |
| } |
| } |
| #endif |
| |
| for (auto* element = startElement; element; element = element->parentOrShadowHostElement()) { |
| auto* renderer = element->renderer(); |
| if (!renderer) |
| continue; |
| |
| UserDrag dragMode = renderer->style().userDrag(); |
| if (m_dragSourceAction.contains(DragSourceAction::DHTML) && dragMode == UserDrag::Element) { |
| state.type.add(DragSourceAction::DHTML); |
| return element; |
| } |
| if (dragMode == UserDrag::Auto) { |
| if ((m_dragSourceAction.contains(DragSourceAction::Image)) |
| && is<HTMLImageElement>(*element) |
| && imageElementIsDraggable(downcast<HTMLImageElement>(*element), *sourceFrame)) { |
| state.type.add(DragSourceAction::Image); |
| return element; |
| } |
| if (m_dragSourceAction.contains(DragSourceAction::Link) && isDraggableLink(*element)) { |
| state.type.add(DragSourceAction::Link); |
| return element; |
| } |
| #if ENABLE(ATTACHMENT_ELEMENT) |
| if (m_dragSourceAction.contains(DragSourceAction::Attachment) |
| && is<HTMLAttachmentElement>(*element) |
| && downcast<HTMLAttachmentElement>(*element).file()) { |
| state.type.add(DragSourceAction::Attachment); |
| return element; |
| } |
| #endif |
| #if ENABLE(INPUT_TYPE_COLOR) |
| if (m_dragSourceAction.contains(DragSourceAction::Color) && isEnabledColorInput(*element)) { |
| state.type.add(DragSourceAction::Color); |
| return element; |
| } |
| #endif |
| } |
| } |
| |
| // We either have nothing to drag or we have a selection and we're not over a draggable element. |
| if (state.type.contains(DragSourceAction::Selection) && m_dragSourceAction.contains(DragSourceAction::Selection)) |
| return startElement; |
| |
| return nullptr; |
| } |
| |
| static CachedImage* getCachedImage(Element& element) |
| { |
| RenderObject* renderer = element.renderer(); |
| if (!is<RenderImage>(renderer)) |
| return nullptr; |
| auto& image = downcast<RenderImage>(*renderer); |
| return image.cachedImage(); |
| } |
| |
| static Image* getImage(Element& element) |
| { |
| CachedImage* cachedImage = getCachedImage(element); |
| // Don't use cachedImage->imageForRenderer() here as that may return BitmapImages for cached SVG Images. |
| // Users of getImage() want access to the SVGImage, in order to figure out the filename extensions, |
| // which would be empty when asking the cached BitmapImages. |
| return (cachedImage && !cachedImage->errorOccurred()) ? |
| cachedImage->image() : nullptr; |
| } |
| |
| static void selectElement(Element& element) |
| { |
| RefPtr<Range> range = element.document().createRange(); |
| range->selectNode(element); |
| element.document().frame()->selection().setSelection(VisibleSelection(*range, DOWNSTREAM)); |
| } |
| |
| static IntPoint dragLocForDHTMLDrag(const IntPoint& mouseDraggedPoint, const IntPoint& dragOrigin, const IntPoint& dragImageOffset, bool isLinkImage) |
| { |
| // dragImageOffset is the cursor position relative to the lower-left corner of the image. |
| #if PLATFORM(MAC) |
| // We add in the Y dimension because we are a flipped view, so adding moves the image down. |
| const int yOffset = dragImageOffset.y(); |
| #else |
| const int yOffset = -dragImageOffset.y(); |
| #endif |
| |
| if (isLinkImage) |
| return IntPoint(mouseDraggedPoint.x() - dragImageOffset.x(), mouseDraggedPoint.y() + yOffset); |
| |
| return IntPoint(dragOrigin.x() - dragImageOffset.x(), dragOrigin.y() + yOffset); |
| } |
| |
| static FloatPoint dragImageAnchorPointForSelectionDrag(Frame& frame, const IntPoint& mouseDraggedPoint) |
| { |
| IntRect draggingRect = enclosingIntRect(frame.selection().selectionBounds()); |
| |
| float x = (mouseDraggedPoint.x() - draggingRect.x()) / (float)draggingRect.width(); |
| float y = (mouseDraggedPoint.y() - draggingRect.y()) / (float)draggingRect.height(); |
| |
| return FloatPoint { x, y }; |
| } |
| |
| static IntPoint dragLocForSelectionDrag(Frame& src) |
| { |
| IntRect draggingRect = enclosingIntRect(src.selection().selectionBounds()); |
| int xpos = draggingRect.maxX(); |
| xpos = draggingRect.x() < xpos ? draggingRect.x() : xpos; |
| int ypos = draggingRect.maxY(); |
| #if PLATFORM(COCOA) |
| // Deal with flipped coordinates on Mac |
| ypos = draggingRect.y() > ypos ? draggingRect.y() : ypos; |
| #else |
| ypos = draggingRect.y() < ypos ? draggingRect.y() : ypos; |
| #endif |
| return IntPoint(xpos, ypos); |
| } |
| |
| void DragController::prepareForDragStart(Frame& source, OptionSet<DragSourceAction> actionMask, Element& element, DataTransfer& dataTransfer, const IntPoint& dragOrigin) const |
| { |
| #if !PLATFORM(WIN) |
| Ref<Frame> protector(source); |
| auto hitTestResult = hitTestResultForDragStart(source, element, dragOrigin); |
| if (!hitTestResult) |
| return; |
| |
| auto& pasteboard = dataTransfer.pasteboard(); |
| auto& editor = source.editor(); |
| if (actionMask == DragSourceAction::Selection) { |
| if (enclosingTextFormControl(source.selection().selection().start())) |
| pasteboard.writePlainText(editor.selectedTextForDataTransfer(), Pasteboard::CannotSmartReplace); |
| else |
| editor.writeSelectionToPasteboard(pasteboard); |
| return; |
| } |
| |
| auto* image = getImage(element); |
| auto imageURL = hitTestResult->absoluteImageURL(); |
| if (actionMask.contains(DragSourceAction::Image) && !imageURL.isEmpty() && image && !image->isNull()) { |
| editor.writeImageToPasteboard(pasteboard, element, imageURL, { }); |
| return; |
| } |
| |
| auto linkURL = hitTestResult->absoluteLinkURL(); |
| if (actionMask.contains(DragSourceAction::Link) && !linkURL.isEmpty() && source.document()->securityOrigin().canDisplay(linkURL)) |
| editor.copyURL(linkURL, hitTestResult->textContent().simplifyWhiteSpace(), pasteboard); |
| #else |
| // FIXME: Make this work on Windows by implementing Editor::writeSelectionToPasteboard and Editor::writeImageToPasteboard. |
| UNUSED_PARAM(source); |
| UNUSED_PARAM(actionMask); |
| UNUSED_PARAM(element); |
| UNUSED_PARAM(dataTransfer); |
| UNUSED_PARAM(dragOrigin); |
| #endif |
| } |
| |
| Optional<HitTestResult> DragController::hitTestResultForDragStart(Frame& source, Element& element, const IntPoint& location) const |
| { |
| if (!source.view() || !source.contentRenderer()) |
| return WTF::nullopt; |
| |
| constexpr OptionSet<HitTestRequest::RequestType> hitType { HitTestRequest::ReadOnly, HitTestRequest::Active, HitTestRequest::AllowChildFrameContent }; |
| auto hitTestResult = source.eventHandler().hitTestResultAtPoint(location, hitType); |
| |
| bool sourceContainsHitNode = element.containsIncludingShadowDOM(hitTestResult.innerNode()); |
| if (!sourceContainsHitNode) { |
| // The original node being dragged isn't under the drag origin anymore... maybe it was |
| // hidden or moved out from under the cursor. Regardless, we don't want to start a drag on |
| // something that's not actually under the drag origin. |
| return WTF::nullopt; |
| } |
| |
| return { hitTestResult }; |
| } |
| |
| bool DragController::startDrag(Frame& src, const DragState& state, OptionSet<DragOperation> sourceOperationMask, const PlatformMouseEvent& dragEvent, const IntPoint& dragOrigin, HasNonDefaultPasteboardData hasData) |
| { |
| if (!state.source) |
| return false; |
| |
| Ref<Frame> protector(src); |
| auto hitTestResult = hitTestResultForDragStart(src, *state.source, dragOrigin); |
| if (!hitTestResult) |
| return false; |
| |
| auto linkURL = hitTestResult->absoluteLinkURL(); |
| auto imageURL = hitTestResult->absoluteImageURL(); |
| |
| IntPoint mouseDraggedPoint = src.view()->windowToContents(dragEvent.position()); |
| |
| m_draggingImageURL = URL(); |
| m_sourceDragOperationMask = sourceOperationMask; |
| |
| DragImage dragImage; |
| IntPoint dragLoc(0, 0); |
| IntPoint dragImageOffset(0, 0); |
| |
| ASSERT(state.dataTransfer); |
| |
| DataTransfer& dataTransfer = *state.dataTransfer; |
| if (state.type == DragSourceAction::DHTML) { |
| dragImage = DragImage { dataTransfer.createDragImage(dragImageOffset) }; |
| // We allow DHTML/JS to set the drag image, even if its a link, image or text we're dragging. |
| // This is in the spirit of the IE API, which allows overriding of pasteboard data and DragOp. |
| if (dragImage) { |
| dragLoc = dragLocForDHTMLDrag(mouseDraggedPoint, dragOrigin, dragImageOffset, !linkURL.isEmpty()); |
| m_dragOffset = dragImageOffset; |
| } |
| } |
| |
| if (state.type == DragSourceAction::Selection || !imageURL.isEmpty() || !linkURL.isEmpty()) { |
| // Selection, image, and link drags receive a default set of allowed drag operations that |
| // follows from: |
| // http://trac.webkit.org/browser/trunk/WebKit/mac/WebView/WebHTMLView.mm?rev=48526#L3430 |
| m_sourceDragOperationMask.add({ DragOperation::Generic, DragOperation::Copy }); |
| } |
| |
| ASSERT(state.source); |
| Element& element = *state.source; |
| |
| bool mustUseLegacyDragClient = hasData == HasNonDefaultPasteboardData::Yes || client().useLegacyDragClient(); |
| |
| IntRect dragImageBounds; |
| Image* image = getImage(element); |
| if (state.type == DragSourceAction::Selection) { |
| PasteboardWriterData pasteboardWriterData; |
| |
| if (hasData == HasNonDefaultPasteboardData::No) { |
| if (src.selection().selection().isNone()) { |
| // The page may have cleared out the selection in the dragstart handler, in which case we should bail |
| // out of the drag, since there is no content to write to the pasteboard. |
| return false; |
| } |
| |
| // FIXME: This entire block is almost identical to the code in Editor::copy, and the code should be shared. |
| auto selectionRange = src.selection().selection().toNormalizedRange(); |
| ASSERT(selectionRange); |
| |
| src.editor().willWriteSelectionToPasteboard(createLiveRange(*selectionRange).ptr()); |
| |
| if (enclosingTextFormControl(src.selection().selection().start())) { |
| if (mustUseLegacyDragClient) |
| dataTransfer.pasteboard().writePlainText(src.editor().selectedTextForDataTransfer(), Pasteboard::CannotSmartReplace); |
| else { |
| PasteboardWriterData::PlainText plainText; |
| plainText.canSmartCopyOrDelete = false; |
| plainText.text = src.editor().selectedTextForDataTransfer(); |
| pasteboardWriterData.setPlainText(WTFMove(plainText)); |
| } |
| } else { |
| if (mustUseLegacyDragClient) { |
| #if !PLATFORM(WIN) |
| src.editor().writeSelectionToPasteboard(dataTransfer.pasteboard()); |
| #else |
| // FIXME: Convert Windows to match the other platforms and delete this. |
| dataTransfer.pasteboard().writeSelection(createLiveRange(*selectionRange), src.editor().canSmartCopyOrDelete(), src, IncludeImageAltTextForDataTransfer); |
| #endif |
| } else { |
| #if PLATFORM(COCOA) |
| src.editor().writeSelection(pasteboardWriterData); |
| #endif |
| } |
| } |
| |
| src.editor().didWriteSelectionToPasteboard(); |
| } |
| client().willPerformDragSourceAction(DragSourceAction::Selection, dragOrigin, dataTransfer); |
| if (!dragImage) { |
| TextIndicatorData textIndicator; |
| dragImage = DragImage { dissolveDragImageToFraction(createDragImageForSelection(src, textIndicator), DragImageAlpha) }; |
| if (textIndicator.contentImage) |
| dragImage.setIndicatorData(textIndicator); |
| dragLoc = dragLocForSelectionDrag(src); |
| m_dragOffset = IntPoint(dragOrigin.x() - dragLoc.x(), dragOrigin.y() - dragLoc.y()); |
| } |
| |
| if (!dragImage) |
| return false; |
| |
| if (mustUseLegacyDragClient) { |
| doSystemDrag(WTFMove(dragImage), dragLoc, dragOrigin, src, state, { }); |
| return true; |
| } |
| |
| DragItem dragItem; |
| dragItem.imageAnchorPoint = dragImageAnchorPointForSelectionDrag(src, mouseDraggedPoint); |
| dragItem.image = WTFMove(dragImage); |
| dragItem.data = WTFMove(pasteboardWriterData); |
| |
| beginDrag(WTFMove(dragItem), src, dragOrigin, mouseDraggedPoint, dataTransfer, DragSourceAction::Selection); |
| |
| return true; |
| } |
| |
| if (!src.document()->securityOrigin().canDisplay(linkURL)) { |
| src.document()->addConsoleMessage(MessageSource::Security, MessageLevel::Error, "Not allowed to drag local resource: " + linkURL.stringCenterEllipsizedToLength()); |
| return false; |
| } |
| |
| if (!imageURL.isEmpty() && image && !image->isNull() && m_dragSourceAction.contains(DragSourceAction::Image)) { |
| // We shouldn't be starting a drag for an image that can't provide an extension. |
| // This is an early detection for problems encountered later upon drop. |
| ASSERT(!image->filenameExtension().isEmpty()); |
| |
| #if ENABLE(ATTACHMENT_ELEMENT) |
| auto attachmentInfo = src.editor().promisedAttachmentInfo(element); |
| #else |
| PromisedAttachmentInfo attachmentInfo; |
| #endif |
| |
| if (hasData == HasNonDefaultPasteboardData::No) { |
| m_draggingImageURL = imageURL; |
| if (element.isContentRichlyEditable()) |
| selectElement(element); |
| if (!attachmentInfo) |
| declareAndWriteDragImage(dataTransfer, element, !linkURL.isEmpty() ? linkURL : imageURL, hitTestResult->altDisplayString()); |
| } |
| |
| client().willPerformDragSourceAction(DragSourceAction::Image, dragOrigin, dataTransfer); |
| |
| if (!dragImage) |
| doImageDrag(element, dragOrigin, hitTestResult->imageRect(), src, m_dragOffset, state, WTFMove(attachmentInfo)); |
| else { |
| // DHTML defined drag image |
| doSystemDrag(WTFMove(dragImage), dragLoc, dragOrigin, src, state, WTFMove(attachmentInfo)); |
| } |
| |
| return true; |
| } |
| |
| if (!linkURL.isEmpty() && m_dragSourceAction.contains(DragSourceAction::Link)) { |
| PasteboardWriterData pasteboardWriterData; |
| |
| String textContentWithSimplifiedWhiteSpace = hitTestResult->textContent().simplifyWhiteSpace(); |
| |
| if (hasData == HasNonDefaultPasteboardData::No) { |
| // Simplify whitespace so the title put on the dataTransfer resembles what the user sees |
| // on the web page. This includes replacing newlines with spaces. |
| if (mustUseLegacyDragClient) |
| src.editor().copyURL(linkURL, textContentWithSimplifiedWhiteSpace, dataTransfer.pasteboard()); |
| else |
| pasteboardWriterData.setURLData(src.editor().pasteboardWriterURL(linkURL, textContentWithSimplifiedWhiteSpace)); |
| } else if (dataTransfer.pasteboard().canWriteTrustworthyWebURLsPboardType()) { |
| // Make sure the pasteboard also contains trustworthy link data |
| // but don't overwrite more general pasteboard types. |
| PasteboardURL pasteboardURL; |
| pasteboardURL.url = linkURL; |
| pasteboardURL.title = hitTestResult->textContent(); |
| dataTransfer.pasteboard().writeTrustworthyWebURLsPboardType(pasteboardURL); |
| } |
| |
| const VisibleSelection& sourceSelection = src.selection().selection(); |
| if (sourceSelection.isCaret() && sourceSelection.isContentEditable()) { |
| // a user can initiate a drag on a link without having any text |
| // selected. In this case, we should expand the selection to |
| // the enclosing anchor element |
| Position pos = sourceSelection.base(); |
| Node* node = enclosingAnchorElement(pos); |
| if (node) |
| src.selection().setSelection(VisibleSelection::selectionFromContentsOfNode(node)); |
| } |
| |
| client().willPerformDragSourceAction(DragSourceAction::Link, dragOrigin, dataTransfer); |
| if (!dragImage) { |
| TextIndicatorData textIndicator; |
| dragImage = DragImage { createDragImageForLink(element, linkURL, textContentWithSimplifiedWhiteSpace, textIndicator, src.settings().fontRenderingMode(), m_page.deviceScaleFactor()) }; |
| if (dragImage) { |
| m_dragOffset = dragOffsetForLinkDragImage(dragImage.get()); |
| dragLoc = IntPoint(dragOrigin.x() + m_dragOffset.x(), dragOrigin.y() + m_dragOffset.y()); |
| dragImage = DragImage { platformAdjustDragImageForDeviceScaleFactor(dragImage.get(), m_page.deviceScaleFactor()) }; |
| if (textIndicator.contentImage) |
| dragImage.setIndicatorData(textIndicator); |
| } |
| } |
| |
| if (mustUseLegacyDragClient) { |
| doSystemDrag(WTFMove(dragImage), dragLoc, dragOrigin, src, state, { }); |
| return true; |
| } |
| |
| DragItem dragItem; |
| dragItem.imageAnchorPoint = dragImage ? anchorPointForLinkDragImage(dragImage.get()) : FloatPoint(); |
| dragItem.image = WTFMove(dragImage); |
| dragItem.data = WTFMove(pasteboardWriterData); |
| |
| beginDrag(WTFMove(dragItem), src, dragOrigin, mouseDraggedPoint, dataTransfer, DragSourceAction::Selection); |
| |
| return true; |
| } |
| |
| #if ENABLE(ATTACHMENT_ELEMENT) |
| if (is<HTMLAttachmentElement>(element) && m_dragSourceAction.contains(DragSourceAction::Attachment)) { |
| auto& attachment = downcast<HTMLAttachmentElement>(element); |
| auto* attachmentRenderer = attachment.renderer(); |
| |
| src.editor().setIgnoreSelectionChanges(true); |
| auto previousSelection = src.selection().selection(); |
| selectElement(element); |
| |
| PromisedAttachmentInfo promisedAttachment; |
| if (hasData == HasNonDefaultPasteboardData::No) { |
| auto& editor = src.editor(); |
| promisedAttachment = editor.promisedAttachmentInfo(attachment); |
| #if PLATFORM(COCOA) |
| if (!promisedAttachment && editor.client()) { |
| // Otherwise, if no file URL is specified, call out to the injected bundle to populate the pasteboard with data. |
| editor.willWriteSelectionToPasteboard(createLiveRange(src.selection().selection().toNormalizedRange()).get()); |
| editor.writeSelectionToPasteboard(dataTransfer.pasteboard()); |
| editor.didWriteSelectionToPasteboard(); |
| } |
| #endif |
| } |
| |
| client().willPerformDragSourceAction(DragSourceAction::Attachment, dragOrigin, dataTransfer); |
| |
| if (!dragImage) { |
| TextIndicatorData textIndicator; |
| if (attachmentRenderer) |
| attachmentRenderer->setShouldDrawBorder(false); |
| dragImage = DragImage { dissolveDragImageToFraction(createDragImageForSelection(src, textIndicator), DragImageAlpha) }; |
| if (attachmentRenderer) |
| attachmentRenderer->setShouldDrawBorder(true); |
| if (textIndicator.contentImage) |
| dragImage.setIndicatorData(textIndicator); |
| dragLoc = dragLocForSelectionDrag(src); |
| m_dragOffset = IntPoint(dragOrigin.x() - dragLoc.x(), dragOrigin.y() - dragLoc.y()); |
| } |
| doSystemDrag(WTFMove(dragImage), dragLoc, dragOrigin, src, state, WTFMove(promisedAttachment)); |
| if (!element.isContentRichlyEditable()) |
| src.selection().setSelection(previousSelection); |
| src.editor().setIgnoreSelectionChanges(false); |
| return true; |
| } |
| #endif |
| |
| #if ENABLE(INPUT_TYPE_COLOR) |
| bool isColorControl = is<HTMLInputElement>(state.source) && downcast<HTMLInputElement>(*state.source).isColorControl(); |
| if (isColorControl && m_dragSourceAction.contains(DragSourceAction::Color)) { |
| auto& input = downcast<HTMLInputElement>(*state.source); |
| auto color = input.valueAsColor(); |
| |
| Path visiblePath; |
| dragImage = DragImage { createDragImageForColor(color, input.boundsInRootViewSpace(), input.document().page()->pageScaleFactor(), visiblePath) }; |
| dragImage.setVisiblePath(visiblePath); |
| dataTransfer.pasteboard().write(color); |
| dragImageOffset = IntPoint { dragImageSize(dragImage.get()) }; |
| dragLoc = dragLocForDHTMLDrag(mouseDraggedPoint, dragOrigin, dragImageOffset, false); |
| |
| client().willPerformDragSourceAction(DragSourceAction::Color, dragOrigin, dataTransfer); |
| doSystemDrag(WTFMove(dragImage), dragLoc, dragOrigin, src, state, { }); |
| return true; |
| } |
| #endif |
| |
| if (state.type == DragSourceAction::DHTML && dragImage) { |
| ASSERT(m_dragSourceAction.contains(DragSourceAction::DHTML)); |
| client().willPerformDragSourceAction(DragSourceAction::DHTML, dragOrigin, dataTransfer); |
| doSystemDrag(WTFMove(dragImage), dragLoc, dragOrigin, src, state, { }); |
| return true; |
| } |
| |
| return false; |
| } |
| |
| void DragController::doImageDrag(Element& element, const IntPoint& dragOrigin, const IntRect& layoutRect, Frame& frame, IntPoint& dragImageOffset, const DragState& state, PromisedAttachmentInfo&& attachmentInfo) |
| { |
| IntPoint mouseDownPoint = dragOrigin; |
| DragImage dragImage; |
| IntPoint scaledOrigin; |
| |
| if (!element.renderer()) |
| return; |
| |
| ImageOrientation orientation = element.renderer()->imageOrientation(); |
| |
| Image* image = getImage(element); |
| if (image && !layoutRect.isEmpty() && shouldUseCachedImageForDragImage(*image) && (dragImage = DragImage { createDragImageFromImage(image, orientation) })) { |
| dragImage = DragImage { fitDragImageToMaxSize(dragImage.get(), layoutRect.size(), maxDragImageSize()) }; |
| IntSize fittedSize = dragImageSize(dragImage.get()); |
| |
| dragImage = DragImage { platformAdjustDragImageForDeviceScaleFactor(dragImage.get(), m_page.deviceScaleFactor()) }; |
| dragImage = DragImage { dissolveDragImageToFraction(dragImage.get(), DragImageAlpha) }; |
| |
| // Properly orient the drag image and orient it differently if it's smaller than the original. |
| float scale = fittedSize.width() / (float)layoutRect.width(); |
| float dx = scale * (layoutRect.x() - mouseDownPoint.x()); |
| float originY = layoutRect.y(); |
| #if PLATFORM(COCOA) |
| // Compensate for accursed flipped coordinates in Cocoa. |
| originY += layoutRect.height(); |
| #endif |
| float dy = scale * (originY - mouseDownPoint.y()); |
| scaledOrigin = IntPoint((int)(dx + 0.5), (int)(dy + 0.5)); |
| } else { |
| if (CachedImage* cachedImage = getCachedImage(element)) { |
| dragImage = DragImage { createDragImageIconForCachedImageFilename(cachedImage->response().suggestedFilename()) }; |
| if (dragImage) { |
| dragImage = DragImage { platformAdjustDragImageForDeviceScaleFactor(dragImage.get(), m_page.deviceScaleFactor()) }; |
| scaledOrigin = IntPoint(DragIconRightInset - dragImageSize(dragImage.get()).width(), DragIconBottomInset); |
| } |
| } |
| } |
| |
| if (!dragImage) |
| return; |
| |
| dragImageOffset = mouseDownPoint + scaledOrigin; |
| doSystemDrag(WTFMove(dragImage), dragImageOffset, dragOrigin, frame, state, WTFMove(attachmentInfo)); |
| } |
| |
| void DragController::beginDrag(DragItem dragItem, Frame& frame, const IntPoint& mouseDownPoint, const IntPoint& mouseDraggedPoint, DataTransfer& dataTransfer, DragSourceAction dragSourceAction) |
| { |
| ASSERT(!client().useLegacyDragClient()); |
| |
| m_didInitiateDrag = true; |
| m_dragInitiator = frame.document(); |
| |
| // Protect this frame and view, as a load may occur mid drag and attempt to unload this frame |
| Ref<Frame> mainFrameProtector(m_page.mainFrame()); |
| RefPtr<FrameView> viewProtector = mainFrameProtector->view(); |
| |
| auto mouseDownPointInRootViewCoordinates = viewProtector->rootViewToContents(frame.view()->contentsToRootView(mouseDownPoint)); |
| auto mouseDraggedPointInRootViewCoordinates = viewProtector->rootViewToContents(frame.view()->contentsToRootView(mouseDraggedPoint)); |
| |
| client().beginDrag(WTFMove(dragItem), frame, mouseDownPointInRootViewCoordinates, mouseDraggedPointInRootViewCoordinates, dataTransfer, dragSourceAction); |
| } |
| |
| static RefPtr<Element> containingLinkElement(Element& element) |
| { |
| for (auto& currentElement : lineageOfType<Element>(element)) { |
| if (currentElement.isLink()) |
| return ¤tElement; |
| } |
| return nullptr; |
| } |
| |
| void DragController::doSystemDrag(DragImage image, const IntPoint& dragLoc, const IntPoint& eventPos, Frame& frame, const DragState& state, PromisedAttachmentInfo&& promisedAttachmentInfo) |
| { |
| m_didInitiateDrag = true; |
| m_dragInitiator = frame.document(); |
| // Protect this frame and view, as a load may occur mid drag and attempt to unload this frame |
| Ref<Frame> frameProtector(m_page.mainFrame()); |
| RefPtr<FrameView> viewProtector = frameProtector->view(); |
| |
| DragItem item; |
| item.image = WTFMove(image); |
| ASSERT(state.type.hasExactlyOneBitSet()); |
| item.sourceAction = state.type.toSingleValue(); |
| item.promisedAttachmentInfo = WTFMove(promisedAttachmentInfo); |
| |
| auto eventPositionInRootViewCoordinates = frame.view()->contentsToRootView(eventPos); |
| auto dragLocationInRootViewCoordinates = frame.view()->contentsToRootView(dragLoc); |
| item.eventPositionInContentCoordinates = viewProtector->rootViewToContents(eventPositionInRootViewCoordinates); |
| item.dragLocationInContentCoordinates = viewProtector->rootViewToContents(dragLocationInRootViewCoordinates); |
| item.dragLocationInWindowCoordinates = viewProtector->contentsToWindow(item.dragLocationInContentCoordinates); |
| if (auto element = state.source) { |
| auto dataTransferImageElement = state.dataTransfer->dragImageElement(); |
| if (state.type == DragSourceAction::DHTML) { |
| // If the drag image has been customized, fall back to positioning the preview relative to the drag event location. |
| IntSize dragPreviewSize; |
| if (dataTransferImageElement) |
| dragPreviewSize = dataTransferImageElement->boundsInRootViewSpace().size(); |
| else { |
| dragPreviewSize = dragImageSize(item.image.get()); |
| if (auto* page = frame.page()) |
| dragPreviewSize.scale(1 / page->deviceScaleFactor()); |
| } |
| item.dragPreviewFrameInRootViewCoordinates = { dragLocationInRootViewCoordinates, WTFMove(dragPreviewSize) }; |
| } else { |
| // We can position the preview using the bounds of the drag source element. |
| item.dragPreviewFrameInRootViewCoordinates = element->boundsInRootViewSpace(); |
| } |
| |
| if (auto link = containingLinkElement(*element)) { |
| auto titleAttribute = link->attributeWithoutSynchronization(HTMLNames::titleAttr); |
| item.title = titleAttribute.isEmpty() ? link->innerText() : titleAttribute.string(); |
| item.url = frame.document()->completeURL(stripLeadingAndTrailingHTMLSpaces(link->getAttribute(HTMLNames::hrefAttr))); |
| } |
| } |
| client().startDrag(WTFMove(item), *state.dataTransfer, frameProtector.get()); |
| // DragClient::startDrag can cause our Page to dispear, deallocating |this|. |
| if (!frameProtector->page()) |
| return; |
| |
| cleanupAfterSystemDrag(); |
| } |
| |
| void DragController::removeAllDroppedImagePlaceholders() |
| { |
| m_droppedImagePlaceholderRange = nullptr; |
| for (auto& placeholder : std::exchange(m_droppedImagePlaceholders, { })) { |
| if (placeholder->isConnected()) |
| placeholder->remove(); |
| } |
| } |
| |
| bool DragController::tryToUpdateDroppedImagePlaceholders(const DragData& dragData) |
| { |
| ASSERT(!m_droppedImagePlaceholders.isEmpty()); |
| ASSERT(m_droppedImagePlaceholderRange); |
| |
| auto document = makeRef(m_droppedImagePlaceholders[0]->document()); |
| auto frame = makeRefPtr(document->frame()); |
| if (!frame) |
| return false; |
| |
| WebContentReader reader(*frame, *m_droppedImagePlaceholderRange, true); |
| auto pasteboard = Pasteboard::createForDragAndDrop(dragData); |
| pasteboard->read(reader); |
| |
| if (!reader.fragment) |
| return false; |
| |
| Vector<Ref<HTMLImageElement>> imageElements; |
| for (auto& imageElement : descendantsOfType<HTMLImageElement>(*reader.fragment)) |
| imageElements.append(imageElement); |
| |
| if (imageElements.size() != m_droppedImagePlaceholders.size()) { |
| ASSERT_NOT_REACHED(); |
| return false; |
| } |
| |
| for (size_t i = 0; i < imageElements.size(); ++i) { |
| auto& imageElement = imageElements[i]; |
| auto& placeholder = m_droppedImagePlaceholders[i]; |
| placeholder->setAttributeWithoutSynchronization(HTMLNames::srcAttr, imageElement->attributeWithoutSynchronization(HTMLNames::srcAttr)); |
| #if ENABLE(ATTACHMENT_ELEMENT) |
| if (auto attachment = imageElement->attachmentElement()) |
| placeholder->setAttachmentElement(attachment.releaseNonNull()); |
| #endif |
| } |
| return true; |
| } |
| |
| void DragController::insertDroppedImagePlaceholdersAtCaret(const Vector<IntSize>& imageSizes) |
| { |
| auto& caretController = m_page.dragCaretController(); |
| if (!caretController.isContentRichlyEditable()) |
| return; |
| |
| auto dropCaret = caretController.caretPosition(); |
| if (dropCaret.isNull()) |
| return; |
| |
| auto document = makeRefPtr(dropCaret.deepEquivalent().document()); |
| if (!document) |
| return; |
| |
| auto frame = makeRefPtr(document->frame()); |
| if (!frame) |
| return; |
| |
| IgnoreSelectionChangeForScope selectionChange { *frame }; |
| |
| auto fragment = DocumentFragment::create(*document); |
| for (auto& size : imageSizes) { |
| ASSERT(!size.isEmpty()); |
| auto image = HTMLImageElement::create(*document); |
| image->setAttributeWithoutSynchronization(HTMLNames::widthAttr, AtomString::number(size.width())); |
| image->setAttributeWithoutSynchronization(HTMLNames::heightAttr, AtomString::number(size.height())); |
| image->setInlineStyleProperty(CSSPropertyMaxWidth, 100, CSSUnitType::CSS_PERCENTAGE); |
| image->setInlineStyleProperty(CSSPropertyBackgroundColor, serializationForCSS(Color::black.colorWithAlpha(13))); |
| image->setIsDroppedImagePlaceholder(); |
| fragment->appendChild(WTFMove(image)); |
| } |
| |
| frame->selection().setSelection(dropCaret); |
| |
| auto command = ReplaceSelectionCommand::create(*document, WTFMove(fragment), { ReplaceSelectionCommand::PreventNesting, ReplaceSelectionCommand::SmartReplace }, EditAction::InsertFromDrop); |
| command->apply(); |
| |
| auto insertedContentRange = command->insertedContentRange(); |
| if (!insertedContentRange) { |
| ASSERT_NOT_REACHED(); |
| return; |
| } |
| |
| auto container = makeRefPtr(insertedContentRange->commonAncestorContainer()); |
| if (!is<ContainerNode>(container)) { |
| ASSERT_NOT_REACHED(); |
| return; |
| } |
| |
| Vector<Ref<HTMLImageElement>> placeholders; |
| for (auto& placeholder : descendantsOfType<HTMLImageElement>(downcast<ContainerNode>(*container))) { |
| auto intersectsNode = insertedContentRange->intersectsNode(placeholder); |
| if (!intersectsNode.hasException() && intersectsNode.returnValue()) |
| placeholders.append(placeholder); |
| } |
| |
| if (placeholders.size() != imageSizes.size()) { |
| ASSERT_NOT_REACHED(); |
| return; |
| } |
| |
| for (size_t i = 0; i < placeholders.size(); ++i) { |
| auto& placeholder = placeholders[i]; |
| auto imageSize = imageSizes[i]; |
| double clientWidth = placeholder->clientWidth(); |
| double heightRespectingAspectRatio = (imageSize.height() * clientWidth) / imageSize.width(); |
| placeholder->setAttributeWithoutSynchronization(HTMLNames::heightAttr, AtomString::number(heightRespectingAspectRatio)); |
| } |
| |
| document->updateLayout(); |
| |
| m_droppedImagePlaceholders = WTFMove(placeholders); |
| m_droppedImagePlaceholderRange = WTFMove(insertedContentRange); |
| |
| frame->selection().clear(); |
| caretController.setCaretPosition(m_droppedImagePlaceholderRange->startPosition()); |
| } |
| |
| void DragController::finalizeDroppedImagePlaceholder(HTMLImageElement& placeholder) |
| { |
| ASSERT(placeholder.isDroppedImagePlaceholder()); |
| placeholder.removeAttribute(HTMLNames::heightAttr); |
| placeholder.removeInlineStyleProperty(CSSPropertyBackgroundColor); |
| } |
| |
| // Manual drag caret manipulation |
| void DragController::placeDragCaret(const IntPoint& windowPoint) |
| { |
| mouseMovedIntoDocument(m_page.mainFrame().documentAtPoint(windowPoint)); |
| if (!m_documentUnderMouse) |
| return; |
| Frame* frame = m_documentUnderMouse->frame(); |
| FrameView* frameView = frame->view(); |
| if (!frameView) |
| return; |
| IntPoint framePoint = frameView->windowToContents(windowPoint); |
| |
| m_page.dragCaretController().setCaretPosition(frame->visiblePositionForPoint(framePoint)); |
| } |
| |
| bool DragController::shouldUseCachedImageForDragImage(const Image& image) const |
| { |
| #if ENABLE(DATA_INTERACTION) |
| UNUSED_PARAM(image); |
| return true; |
| #else |
| return image.size().height() * image.size().width() <= MaxOriginalImageArea; |
| #endif |
| } |
| |
| #endif // ENABLE(DRAG_SUPPORT) |
| |
| } // namespace WebCore |
