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Diffstat (limited to 'src/3rdparty/webkit/WebCore/html/HTMLAnchorElement.cpp')
| -rw-r--r-- | src/3rdparty/webkit/WebCore/html/HTMLAnchorElement.cpp | 507 |
1 files changed, 507 insertions, 0 deletions
diff --git a/src/3rdparty/webkit/WebCore/html/HTMLAnchorElement.cpp b/src/3rdparty/webkit/WebCore/html/HTMLAnchorElement.cpp new file mode 100644 index 0000000..ce08bcc --- /dev/null +++ b/src/3rdparty/webkit/WebCore/html/HTMLAnchorElement.cpp @@ -0,0 +1,507 @@ +/* + * Copyright (C) 1999 Lars Knoll (knoll@kde.org) + * (C) 1999 Antti Koivisto (koivisto@kde.org) + * (C) 2000 Simon Hausmann <hausmann@kde.org> + * Copyright (C) 2003, 2006, 2007, 2008 Apple Inc. All rights reserved. + * (C) 2006 Graham Dennis (graham.dennis@gmail.com) + * + * 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 "HTMLAnchorElement.h" + +#include "CSSHelper.h" +#include "DNS.h" +#include "Document.h" +#include "Event.h" +#include "EventHandler.h" +#include "EventNames.h" +#include "Frame.h" +#include "FrameLoader.h" +#include "FrameLoaderClient.h" +#include "HTMLImageElement.h" +#include "HTMLNames.h" +#include "KeyboardEvent.h" +#include "MouseEvent.h" +#include "MutationEvent.h" +#include "RenderFlow.h" +#include "RenderImage.h" +#include "ResourceRequest.h" +#include "SelectionController.h" +#include "Settings.h" +#include "UIEvent.h" + +namespace WebCore { + +using namespace HTMLNames; + +HTMLAnchorElement::HTMLAnchorElement(Document* doc) + : HTMLElement(aTag, doc) + , m_rootEditableElementForSelectionOnMouseDown(0) + , m_wasShiftKeyDownOnMouseDown(false) +{ +} + +HTMLAnchorElement::HTMLAnchorElement(const QualifiedName& tagName, Document* doc) + : HTMLElement(tagName, doc) + , m_rootEditableElementForSelectionOnMouseDown(0) + , m_wasShiftKeyDownOnMouseDown(false) +{ +} + +HTMLAnchorElement::~HTMLAnchorElement() +{ +} + +bool HTMLAnchorElement::supportsFocus() const +{ + if (isContentEditable()) + return HTMLElement::supportsFocus(); + return isFocusable() || (isLink() && document() && !document()->haveStylesheetsLoaded()); +} + +bool HTMLAnchorElement::isFocusable() const +{ + if (isContentEditable()) + return HTMLElement::isFocusable(); + + // FIXME: Even if we are not visible, we might have a child that is visible. + // Dave wants to fix that some day with a "has visible content" flag or the like. + if (!(isLink() && renderer() && renderer()->style()->visibility() == VISIBLE)) + return false; + + return true; +} + +bool HTMLAnchorElement::isMouseFocusable() const +{ +#if PLATFORM(GTK) + return HTMLElement::isMouseFocusable(); +#else + return false; +#endif +} + +bool HTMLAnchorElement::isKeyboardFocusable(KeyboardEvent* event) const +{ + if (!isFocusable()) + return false; + + if (!document()->frame()) + return false; + + if (!document()->frame()->eventHandler()->tabsToLinks(event)) + return false; + + // Before calling absoluteRects, check for the common case where the renderer + // or one of the continuations is non-empty, since this is a faster check and + // almost always returns true. + for (RenderObject* r = renderer(); r; r = r->continuation()) + if (r->width() > 0 && r->height() > 0) + return true; + + Vector<IntRect> rects; + FloatPoint absPos = renderer()->localToAbsolute(); + renderer()->absoluteRects(rects, absPos.x(), absPos.y()); + size_t n = rects.size(); + for (size_t i = 0; i < n; ++i) + if (!rects[i].isEmpty()) + return true; + + return false; +} + +void HTMLAnchorElement::defaultEventHandler(Event* evt) +{ + // React on clicks and on keypresses. + // Don't make this KEYUP_EVENT again, it makes khtml follow links it shouldn't, + // when pressing Enter in the combo. + if (isLink() && (evt->type() == eventNames().clickEvent || (evt->type() == eventNames().keydownEvent && focused()))) { + MouseEvent* e = 0; + if (evt->type() == eventNames().clickEvent && evt->isMouseEvent()) + e = static_cast<MouseEvent*>(evt); + + KeyboardEvent* k = 0; + if (evt->type() == eventNames().keydownEvent && evt->isKeyboardEvent()) + k = static_cast<KeyboardEvent*>(evt); + + if (e && e->button() == RightButton) { + HTMLElement::defaultEventHandler(evt); + return; + } + + // If the link is editable, then we need to check the settings to see whether or not to follow the link + if (isContentEditable()) { + EditableLinkBehavior editableLinkBehavior = EditableLinkDefaultBehavior; + if (Settings* settings = document()->settings()) + editableLinkBehavior = settings->editableLinkBehavior(); + + switch (editableLinkBehavior) { + // Always follow the link (Safari 2.0 behavior) + default: + case EditableLinkDefaultBehavior: + case EditableLinkAlwaysLive: + break; + + case EditableLinkNeverLive: + HTMLElement::defaultEventHandler(evt); + return; + + // If the selection prior to clicking on this link resided in the same editable block as this link, + // and the shift key isn't pressed, we don't want to follow the link + case EditableLinkLiveWhenNotFocused: + if (e && !e->shiftKey() && m_rootEditableElementForSelectionOnMouseDown == rootEditableElement()) { + HTMLElement::defaultEventHandler(evt); + return; + } + break; + + // Only follow the link if the shift key is down (WinIE/Firefox behavior) + case EditableLinkOnlyLiveWithShiftKey: + if (e && !e->shiftKey()) { + HTMLElement::defaultEventHandler(evt); + return; + } + break; + } + } + + if (k) { + if (k->keyIdentifier() != "Enter") { + HTMLElement::defaultEventHandler(evt); + return; + } + evt->setDefaultHandled(); + dispatchSimulatedClick(evt); + return; + } + + String url = parseURL(getAttribute(hrefAttr)); + + ASSERT(evt->target()); + ASSERT(evt->target()->toNode()); + if (evt->target()->toNode()->hasTagName(imgTag)) { + HTMLImageElement* img = static_cast<HTMLImageElement*>(evt->target()->toNode()); + if (img && img->isServerMap()) { + RenderImage* r = static_cast<RenderImage*>(img->renderer()); + if (r && e) { + // FIXME: broken with transforms + FloatPoint absPos = r->localToAbsolute(); + int x = e->pageX() - absPos.x(); + int y = e->pageY() - absPos.y(); + url += "?"; + url += String::number(x); + url += ","; + url += String::number(y); + } else { + evt->setDefaultHandled(); + HTMLElement::defaultEventHandler(evt); + return; + } + } + } + + if (!evt->defaultPrevented() && document()->frame()) + document()->frame()->loader()->urlSelected(document()->completeURL(url), getAttribute(targetAttr), evt, false, true); + + evt->setDefaultHandled(); + } else if (isLink() && isContentEditable()) { + // This keeps track of the editable block that the selection was in (if it was in one) just before the link was clicked + // for the LiveWhenNotFocused editable link behavior + if (evt->type() == eventNames().mousedownEvent && evt->isMouseEvent() && static_cast<MouseEvent*>(evt)->button() != RightButton && document()->frame() && document()->frame()->selection()) { + MouseEvent* e = static_cast<MouseEvent*>(evt); + + m_rootEditableElementForSelectionOnMouseDown = document()->frame()->selection()->rootEditableElement(); + m_wasShiftKeyDownOnMouseDown = e && e->shiftKey(); + } else if (evt->type() == eventNames().mouseoverEvent) { + // These are cleared on mouseover and not mouseout because their values are needed for drag events, but these happen + // after mouse out events. + m_rootEditableElementForSelectionOnMouseDown = 0; + m_wasShiftKeyDownOnMouseDown = false; + } + } + + HTMLElement::defaultEventHandler(evt); +} + +void HTMLAnchorElement::setActive(bool down, bool pause) +{ + if (isContentEditable()) { + EditableLinkBehavior editableLinkBehavior = EditableLinkDefaultBehavior; + if (Settings* settings = document()->settings()) + editableLinkBehavior = settings->editableLinkBehavior(); + + switch(editableLinkBehavior) { + default: + case EditableLinkDefaultBehavior: + case EditableLinkAlwaysLive: + break; + + case EditableLinkNeverLive: + return; + + // Don't set the link to be active if the current selection is in the same editable block as + // this link + case EditableLinkLiveWhenNotFocused: + if (down && document()->frame() && document()->frame()->selection() && + document()->frame()->selection()->rootEditableElement() == rootEditableElement()) + return; + break; + + case EditableLinkOnlyLiveWithShiftKey: + return; + } + + } + + ContainerNode::setActive(down, pause); +} + +void HTMLAnchorElement::parseMappedAttribute(MappedAttribute *attr) +{ + if (attr->name() == hrefAttr) { + bool wasLink = isLink(); + setIsLink(!attr->isNull()); + if (wasLink != isLink()) + setChanged(); + if (isLink() && document()->isDNSPrefetchEnabled()) { + String value = attr->value(); + if (protocolIs(value, "http") || protocolIs(value, "https") || value.startsWith("//")) + prefetchDNS(document()->completeURL(value).host()); + } + } else if (attr->name() == nameAttr || + attr->name() == titleAttr || + attr->name() == relAttr) { + // Do nothing. + } else + HTMLElement::parseMappedAttribute(attr); +} + +void HTMLAnchorElement::accessKeyAction(bool sendToAnyElement) +{ + // send the mouse button events if the caller specified sendToAnyElement + dispatchSimulatedClick(0, sendToAnyElement); +} + +bool HTMLAnchorElement::isURLAttribute(Attribute *attr) const +{ + return attr->name() == hrefAttr; +} + +bool HTMLAnchorElement::canStartSelection() const +{ + // FIXME: We probably want this same behavior in SVGAElement too + if (!isLink()) + return HTMLElement::canStartSelection(); + return isContentEditable(); +} + +const AtomicString& HTMLAnchorElement::accessKey() const +{ + return getAttribute(accesskeyAttr); +} + +void HTMLAnchorElement::setAccessKey(const AtomicString& value) +{ + setAttribute(accesskeyAttr, value); +} + +const AtomicString& HTMLAnchorElement::charset() const +{ + return getAttribute(charsetAttr); +} + +void HTMLAnchorElement::setCharset(const AtomicString& value) +{ + setAttribute(charsetAttr, value); +} + +const AtomicString& HTMLAnchorElement::coords() const +{ + return getAttribute(coordsAttr); +} + +void HTMLAnchorElement::setCoords(const AtomicString& value) +{ + setAttribute(coordsAttr, value); +} + +KURL HTMLAnchorElement::href() const +{ + return document()->completeURL(getAttribute(hrefAttr)); +} + +void HTMLAnchorElement::setHref(const AtomicString& value) +{ + setAttribute(hrefAttr, value); +} + +const AtomicString& HTMLAnchorElement::hreflang() const +{ + return getAttribute(hreflangAttr); +} + +void HTMLAnchorElement::setHreflang(const AtomicString& value) +{ + setAttribute(hreflangAttr, value); +} + +const AtomicString& HTMLAnchorElement::name() const +{ + return getAttribute(nameAttr); +} + +void HTMLAnchorElement::setName(const AtomicString& value) +{ + setAttribute(nameAttr, value); +} + +const AtomicString& HTMLAnchorElement::rel() const +{ + return getAttribute(relAttr); +} + +void HTMLAnchorElement::setRel(const AtomicString& value) +{ + setAttribute(relAttr, value); +} + +const AtomicString& HTMLAnchorElement::rev() const +{ + return getAttribute(revAttr); +} + +void HTMLAnchorElement::setRev(const AtomicString& value) +{ + setAttribute(revAttr, value); +} + +const AtomicString& HTMLAnchorElement::shape() const +{ + return getAttribute(shapeAttr); +} + +void HTMLAnchorElement::setShape(const AtomicString& value) +{ + setAttribute(shapeAttr, value); +} + +short HTMLAnchorElement::tabIndex() const +{ + // Skip the supportsFocus check in HTMLElement. + return Element::tabIndex(); +} + +String HTMLAnchorElement::target() const +{ + return getAttribute(targetAttr); +} + +void HTMLAnchorElement::setTarget(const AtomicString& value) +{ + setAttribute(targetAttr, value); +} + +const AtomicString& HTMLAnchorElement::type() const +{ + return getAttribute(typeAttr); +} + +void HTMLAnchorElement::setType(const AtomicString& value) +{ + setAttribute(typeAttr, value); +} + +String HTMLAnchorElement::hash() const +{ + return "#" + href().ref(); +} + +String HTMLAnchorElement::host() const +{ + return href().host(); +} + +String HTMLAnchorElement::hostname() const +{ + const KURL& url = href(); + if (url.port() == 0) + return url.host(); + return url.host() + ":" + String::number(url.port()); +} + +String HTMLAnchorElement::pathname() const +{ + return href().path(); +} + +String HTMLAnchorElement::port() const +{ + return String::number(href().port()); +} + +String HTMLAnchorElement::protocol() const +{ + return href().protocol() + ":"; +} + +String HTMLAnchorElement::search() const +{ + return href().query(); +} + +String HTMLAnchorElement::text() const +{ + return innerText(); +} + +String HTMLAnchorElement::toString() const +{ + return href().string(); +} + +bool HTMLAnchorElement::isLiveLink() const +{ + if (!isLink()) + return false; + if (!isContentEditable()) + return true; + + EditableLinkBehavior editableLinkBehavior = EditableLinkDefaultBehavior; + if (Settings* settings = document()->settings()) + editableLinkBehavior = settings->editableLinkBehavior(); + + switch(editableLinkBehavior) { + default: + case EditableLinkDefaultBehavior: + case EditableLinkAlwaysLive: + return true; + + case EditableLinkNeverLive: + return false; + + // Don't set the link to be live if the current selection is in the same editable block as + // this link or if the shift key is down + case EditableLinkLiveWhenNotFocused: + return m_wasShiftKeyDownOnMouseDown || m_rootEditableElementForSelectionOnMouseDown != rootEditableElement(); + + case EditableLinkOnlyLiveWithShiftKey: + return m_wasShiftKeyDownOnMouseDown; + } +} + +} |