| /* |
| * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
| * (C) 1999 Antti Koivisto (koivisto@kde.org) |
| * (C) 2000 Simon Hausmann (hausmann@kde.org) |
| * (C) 2001 Dirk Mueller (mueller@kde.org) |
| * Copyright (C) 2004-2017 Apple Inc. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "config.h" |
| #include "HTMLBodyElement.h" |
| |
| #include "CSSImageValue.h" |
| #include "CSSParser.h" |
| #include "CSSValueKeywords.h" |
| #include "DOMWindow.h" |
| #include "DOMWrapperWorld.h" |
| #include "EventNames.h" |
| #include "Frame.h" |
| #include "FrameView.h" |
| #include "HTMLFrameElement.h" |
| #include "HTMLIFrameElement.h" |
| #include "HTMLNames.h" |
| #include "HTMLParserIdioms.h" |
| #include "StyleProperties.h" |
| #include <wtf/IsoMallocInlines.h> |
| #include <wtf/NeverDestroyed.h> |
| |
| namespace WebCore { |
| |
| WTF_MAKE_ISO_ALLOCATED_IMPL(HTMLBodyElement); |
| |
| using namespace HTMLNames; |
| |
| HTMLBodyElement::HTMLBodyElement(const QualifiedName& tagName, Document& document) |
| : HTMLElement(tagName, document) |
| { |
| ASSERT(hasTagName(bodyTag)); |
| } |
| |
| bool HTMLBodyElement::isFirstBodyElementOfDocument() const |
| { |
| // By spec http://dev.w3.org/csswg/cssom-view/#the-html-body-element |
| // "The HTML body element is the first body HTML element child of the root HTML element html." |
| return document().body() == this; |
| } |
| |
| Ref<HTMLBodyElement> HTMLBodyElement::create(Document& document) |
| { |
| return adoptRef(*new HTMLBodyElement(bodyTag, document)); |
| } |
| |
| Ref<HTMLBodyElement> HTMLBodyElement::create(const QualifiedName& tagName, Document& document) |
| { |
| return adoptRef(*new HTMLBodyElement(tagName, document)); |
| } |
| |
| HTMLBodyElement::~HTMLBodyElement() = default; |
| |
| bool HTMLBodyElement::isPresentationAttribute(const QualifiedName& name) const |
| { |
| if (name == backgroundAttr || name == marginwidthAttr || name == leftmarginAttr || name == marginheightAttr || name == topmarginAttr || name == bgcolorAttr || name == textAttr || name == bgpropertiesAttr) |
| return true; |
| return HTMLElement::isPresentationAttribute(name); |
| } |
| |
| void HTMLBodyElement::collectStyleForPresentationAttribute(const QualifiedName& name, const AtomicString& value, MutableStyleProperties& style) |
| { |
| if (name == backgroundAttr) { |
| String url = stripLeadingAndTrailingHTMLSpaces(value); |
| if (!url.isEmpty()) { |
| auto imageValue = CSSImageValue::create(document().completeURL(url)); |
| imageValue.get().setInitiator(localName()); |
| style.setProperty(CSSProperty(CSSPropertyBackgroundImage, WTFMove(imageValue))); |
| } |
| } else if (name == marginwidthAttr || name == leftmarginAttr) { |
| addHTMLLengthToStyle(style, CSSPropertyMarginRight, value); |
| addHTMLLengthToStyle(style, CSSPropertyMarginLeft, value); |
| } else if (name == marginheightAttr || name == topmarginAttr) { |
| addHTMLLengthToStyle(style, CSSPropertyMarginBottom, value); |
| addHTMLLengthToStyle(style, CSSPropertyMarginTop, value); |
| } else if (name == bgcolorAttr) { |
| addHTMLColorToStyle(style, CSSPropertyBackgroundColor, value); |
| } else if (name == textAttr) { |
| addHTMLColorToStyle(style, CSSPropertyColor, value); |
| } else if (name == bgpropertiesAttr) { |
| if (equalLettersIgnoringASCIICase(value, "fixed")) |
| addPropertyToPresentationAttributeStyle(style, CSSPropertyBackgroundAttachment, CSSValueFixed); |
| } else |
| HTMLElement::collectStyleForPresentationAttribute(name, value, style); |
| } |
| |
| HTMLElement::EventHandlerNameMap HTMLBodyElement::createWindowEventHandlerNameMap() |
| { |
| static const QualifiedName* const table[] = { |
| &onbeforeunloadAttr.get(), |
| &onblurAttr.get(), |
| &onerrorAttr.get(), |
| &onfocusAttr.get(), |
| &onfocusinAttr.get(), |
| &onfocusoutAttr.get(), |
| &onhashchangeAttr.get(), |
| &onlanguagechangeAttr.get(), |
| &onloadAttr.get(), |
| &onmessageAttr.get(), |
| &onofflineAttr.get(), |
| &ononlineAttr.get(), |
| &onorientationchangeAttr.get(), |
| &onpagehideAttr.get(), |
| &onpageshowAttr.get(), |
| &onpopstateAttr.get(), |
| &onresizeAttr.get(), |
| &onscrollAttr.get(), |
| &onstorageAttr.get(), |
| &onunloadAttr.get(), |
| &onwebkitmouseforcechangedAttr.get(), |
| &onwebkitmouseforcedownAttr.get(), |
| &onwebkitmouseforceupAttr.get(), |
| &onwebkitmouseforcewillbeginAttr.get(), |
| &onwebkitwillrevealbottomAttr.get(), |
| &onwebkitwillrevealleftAttr.get(), |
| &onwebkitwillrevealrightAttr.get(), |
| &onwebkitwillrevealtopAttr.get(), |
| }; |
| |
| EventHandlerNameMap map; |
| populateEventHandlerNameMap(map, table); |
| return map; |
| } |
| |
| const AtomicString& HTMLBodyElement::eventNameForWindowEventHandlerAttribute(const QualifiedName& attributeName) |
| { |
| static NeverDestroyed<EventHandlerNameMap> map = createWindowEventHandlerNameMap(); |
| return eventNameForEventHandlerAttribute(attributeName, map.get()); |
| } |
| |
| void HTMLBodyElement::parseAttribute(const QualifiedName& name, const AtomicString& value) |
| { |
| if (name == vlinkAttr || name == alinkAttr || name == linkAttr) { |
| if (value.isNull()) { |
| if (name == linkAttr) |
| document().resetLinkColor(); |
| else if (name == vlinkAttr) |
| document().resetVisitedLinkColor(); |
| else |
| document().resetActiveLinkColor(); |
| } else { |
| Color color = CSSParser::parseColor(value, !document().inQuirksMode()); |
| if (color.isValid()) { |
| if (name == linkAttr) |
| document().setLinkColor(color); |
| else if (name == vlinkAttr) |
| document().setVisitedLinkColor(color); |
| else |
| document().setActiveLinkColor(color); |
| } |
| } |
| |
| invalidateStyleForSubtree(); |
| return; |
| } |
| |
| if (name == onselectionchangeAttr) { |
| document().setAttributeEventListener(eventNames().selectionchangeEvent, name, value, mainThreadNormalWorld()); |
| return; |
| } |
| |
| auto& eventName = eventNameForWindowEventHandlerAttribute(name); |
| if (!eventName.isNull()) { |
| document().setWindowAttributeEventListener(eventName, name, value, mainThreadNormalWorld()); |
| return; |
| } |
| |
| HTMLElement::parseAttribute(name, value); |
| } |
| |
| Node::InsertedIntoAncestorResult HTMLBodyElement::insertedIntoAncestor(InsertionType insertionType, ContainerNode& parentOfInsertedTree) |
| { |
| HTMLElement::insertedIntoAncestor(insertionType, parentOfInsertedTree); |
| if (!insertionType.connectedToDocument) |
| return InsertedIntoAncestorResult::Done; |
| |
| // FIXME: It's surprising this is web compatible since it means a marginwidth and marginheight attribute can |
| // magically appear on the <body> of all documents embedded through <iframe> or <frame>. |
| // FIXME: Perhaps this code should be in attach() instead of here. |
| auto ownerElement = makeRefPtr(document().ownerElement()); |
| if (!is<HTMLFrameElementBase>(ownerElement)) |
| return InsertedIntoAncestorResult::Done; |
| |
| return InsertedIntoAncestorResult::NeedsPostInsertionCallback; |
| } |
| |
| void HTMLBodyElement::didFinishInsertingNode() |
| { |
| auto ownerElement = makeRefPtr(document().ownerElement()); |
| RELEASE_ASSERT(is<HTMLFrameElementBase>(ownerElement)); |
| auto& ownerFrameElement = downcast<HTMLFrameElementBase>(*ownerElement); |
| |
| // Read values from the owner before setting any attributes, since setting an attribute can run arbitrary |
| // JavaScript, which might delete the owner element. |
| int marginWidth = ownerFrameElement.marginWidth(); |
| int marginHeight = ownerFrameElement.marginHeight(); |
| |
| if (marginWidth != -1) |
| setIntegralAttribute(marginwidthAttr, marginWidth); |
| if (marginHeight != -1) |
| setIntegralAttribute(marginheightAttr, marginHeight); |
| } |
| |
| bool HTMLBodyElement::isURLAttribute(const Attribute& attribute) const |
| { |
| return attribute.name() == backgroundAttr || HTMLElement::isURLAttribute(attribute); |
| } |
| |
| bool HTMLBodyElement::supportsFocus() const |
| { |
| return hasEditableStyle() || HTMLElement::supportsFocus(); |
| } |
| |
| static int adjustForZoom(int value, const Frame& frame) |
| { |
| double zoomFactor = frame.pageZoomFactor() * frame.frameScaleFactor(); |
| if (zoomFactor == 1) |
| return value; |
| // Needed because of truncation (rather than rounding) when scaling up. |
| if (zoomFactor > 1) |
| value++; |
| return static_cast<int>(value / zoomFactor); |
| } |
| |
| int HTMLBodyElement::scrollLeft() |
| { |
| if (isFirstBodyElementOfDocument()) { |
| document().updateLayoutIgnorePendingStylesheets(); |
| RefPtr<Frame> frame = document().frame(); |
| if (!frame) |
| return 0; |
| RefPtr<FrameView> view = frame->view(); |
| if (!view) |
| return 0; |
| return adjustForZoom(view->contentsScrollPosition().x(), *frame); |
| } |
| return HTMLElement::scrollLeft(); |
| } |
| |
| void HTMLBodyElement::setScrollLeft(int scrollLeft) |
| { |
| if (isFirstBodyElementOfDocument()) { |
| document().updateLayoutIgnorePendingStylesheets(); |
| RefPtr<Frame> frame = document().frame(); |
| if (!frame) |
| return; |
| RefPtr<FrameView> view = frame->view(); |
| if (!view) |
| return; |
| view->setScrollPosition(IntPoint(static_cast<int>(scrollLeft * frame->pageZoomFactor() * frame->frameScaleFactor()), view->scrollY())); |
| } |
| HTMLElement::setScrollLeft(scrollLeft); |
| } |
| |
| int HTMLBodyElement::scrollTop() |
| { |
| if (isFirstBodyElementOfDocument()) { |
| document().updateLayoutIgnorePendingStylesheets(); |
| RefPtr<Frame> frame = document().frame(); |
| if (!frame) |
| return 0; |
| RefPtr<FrameView> view = frame->view(); |
| if (!view) |
| return 0; |
| return adjustForZoom(view->contentsScrollPosition().y(), *frame); |
| } |
| return HTMLElement::scrollTop(); |
| } |
| |
| void HTMLBodyElement::setScrollTop(int scrollTop) |
| { |
| if (isFirstBodyElementOfDocument()) { |
| document().updateLayoutIgnorePendingStylesheets(); |
| RefPtr<Frame> frame = document().frame(); |
| if (!frame) |
| return; |
| RefPtr<FrameView> view = frame->view(); |
| if (!view) |
| return; |
| view->setScrollPosition(IntPoint(view->scrollX(), static_cast<int>(scrollTop * frame->pageZoomFactor() * frame->frameScaleFactor()))); |
| } |
| return HTMLElement::setScrollTop(scrollTop); |
| } |
| |
| void HTMLBodyElement::scrollTo(const ScrollToOptions& options, ScrollClamping clamping) |
| { |
| if (isFirstBodyElementOfDocument()) { |
| // If the element is the HTML body element, document is in quirks mode, and the element is not potentially scrollable, |
| // invoke scroll() on window with options as the only argument, and terminate these steps. |
| // Note that WebKit always uses quirks mode document scrolling behavior. See Document::scrollingElement(). |
| // FIXME: Scrolling an independently scrollable body is broken: webkit.org/b/161612. |
| auto window = makeRefPtr(document().domWindow()); |
| if (!window) |
| return; |
| |
| window->scrollTo(options); |
| return; |
| } |
| return HTMLElement::scrollTo(options, clamping); |
| } |
| |
| int HTMLBodyElement::scrollHeight() |
| { |
| if (isFirstBodyElementOfDocument()) { |
| // Update the document's layout. |
| document().updateLayoutIgnorePendingStylesheets(); |
| RefPtr<Frame> frame = document().frame(); |
| if (!frame) |
| return 0; |
| RefPtr<FrameView> view = frame->view(); |
| if (!view) |
| return 0; |
| return adjustForZoom(view->contentsHeight(), *frame); |
| } |
| return HTMLElement::scrollHeight(); |
| } |
| |
| int HTMLBodyElement::scrollWidth() |
| { |
| if (isFirstBodyElementOfDocument()) { |
| // Update the document's layout. |
| document().updateLayoutIgnorePendingStylesheets(); |
| RefPtr<Frame> frame = document().frame(); |
| if (!frame) |
| return 0; |
| RefPtr<FrameView> view = frame->view(); |
| if (!view) |
| return 0; |
| return adjustForZoom(view->contentsWidth(), *frame); |
| } |
| return HTMLElement::scrollWidth(); |
| } |
| |
| void HTMLBodyElement::addSubresourceAttributeURLs(ListHashSet<URL>& urls) const |
| { |
| HTMLElement::addSubresourceAttributeURLs(urls); |
| |
| addSubresourceURL(urls, document().completeURL(attributeWithoutSynchronization(backgroundAttr))); |
| } |
| |
| } // namespace WebCore |
