2 * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2004, 2005, 2007 Rob Buis <buis@kde.org>
4 * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
5 * Copyright (C) 2010 Apple Inc. All rights reserved.
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public License
18 * along with this library; see the file COPYING.LIB. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
25 #include "core/svg/SVGAElement.h"
27 #include "core/SVGNames.h"
28 #include "core/XLinkNames.h"
29 #include "core/dom/Attr.h"
30 #include "core/dom/Attribute.h"
31 #include "core/dom/Document.h"
32 #include "core/events/KeyboardEvent.h"
33 #include "core/events/MouseEvent.h"
34 #include "core/frame/FrameHost.h"
35 #include "core/frame/LocalFrame.h"
36 #include "core/html/HTMLAnchorElement.h"
37 #include "core/html/HTMLFormElement.h"
38 #include "core/html/parser/HTMLParserIdioms.h"
39 #include "core/loader/FrameLoadRequest.h"
40 #include "core/loader/FrameLoader.h"
41 #include "core/loader/FrameLoaderTypes.h"
42 #include "core/page/Chrome.h"
43 #include "core/page/ChromeClient.h"
44 #include "core/page/Page.h"
45 #include "core/rendering/svg/RenderSVGInline.h"
46 #include "core/rendering/svg/RenderSVGText.h"
47 #include "core/rendering/svg/RenderSVGTransformableContainer.h"
48 #include "core/svg/animation/SVGSMILElement.h"
49 #include "platform/PlatformMouseEvent.h"
50 #include "platform/network/ResourceRequest.h"
54 using namespace HTMLNames;
56 inline SVGAElement::SVGAElement(Document& document)
57 : SVGGraphicsElement(SVGNames::aTag, document)
58 , SVGURIReference(this)
59 , m_svgTarget(SVGAnimatedString::create(this, SVGNames::targetAttr, SVGString::create()))
60 , m_wasFocusedByMouse(false)
62 addToPropertyMap(m_svgTarget);
65 DEFINE_NODE_FACTORY(SVGAElement)
67 String SVGAElement::title() const
69 // If the xlink:title is set (non-empty string), use it.
70 const AtomicString& title = fastGetAttribute(XLinkNames::titleAttr);
74 // Otherwise, use the title of this element.
75 return SVGElement::title();
78 void SVGAElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
80 parseAttributeNew(name, value);
83 void SVGAElement::svgAttributeChanged(const QualifiedName& attrName)
85 // Unlike other SVG*Element classes, SVGAElement only listens to SVGURIReference changes
86 // as none of the other properties changes the linking behaviour for our <a> element.
87 if (SVGURIReference::isKnownAttribute(attrName)) {
88 SVGElement::InvalidationGuard invalidationGuard(this);
90 bool wasLink = isLink();
91 setIsLink(!hrefString().isNull());
93 if (wasLink != isLink())
94 setNeedsStyleRecalc(SubtreeStyleChange, StyleChangeReasonForTracing::create(StyleChangeReason::LinkColorChange));
99 SVGGraphicsElement::svgAttributeChanged(attrName);
102 RenderObject* SVGAElement::createRenderer(RenderStyle*)
104 if (parentNode() && parentNode()->isSVGElement() && toSVGElement(parentNode())->isTextContent())
105 return new RenderSVGInline(this);
107 return new RenderSVGTransformableContainer(this);
110 void SVGAElement::defaultEventHandler(Event* event)
113 ASSERT(event->target());
114 Node* target = event->target()->toNode();
116 if ((focused() || target->focused()) && isEnterKeyKeypressEvent(event)) {
117 event->setDefaultHandled();
118 dispatchSimulatedClick(event);
122 if (isLinkClick(event)) {
123 String url = stripLeadingAndTrailingHTMLSpaces(hrefString());
126 Element* targetElement = treeScope().getElementById(AtomicString(url.substring(1)));
127 if (targetElement && isSVGSMILElement(*targetElement)) {
128 toSVGSMILElement(targetElement)->beginByLinkActivation();
129 event->setDefaultHandled();
134 AtomicString target(m_svgTarget->currentValue()->value());
135 if (target.isEmpty() && fastGetAttribute(XLinkNames::showAttr) == "new")
136 target = AtomicString("_blank", AtomicString::ConstructFromLiteral);
137 event->setDefaultHandled();
139 LocalFrame* frame = document().frame();
142 FrameLoadRequest frameRequest(&document(), ResourceRequest(document().completeURL(url)), target);
143 frameRequest.setTriggeringEvent(event);
144 frame->loader().load(frameRequest);
149 SVGGraphicsElement::defaultEventHandler(event);
152 short SVGAElement::tabIndex() const
154 // Skip the supportsFocus check in SVGElement.
155 return Element::tabIndex();
158 bool SVGAElement::supportsFocus() const
160 if (hasEditableStyle())
161 return SVGGraphicsElement::supportsFocus();
162 // If not a link we should still be able to focus the element if it has tabIndex.
163 return isLink() || SVGGraphicsElement::supportsFocus();
166 bool SVGAElement::shouldHaveFocusAppearance() const
168 return !m_wasFocusedByMouse || SVGGraphicsElement::supportsFocus();
171 void SVGAElement::dispatchFocusEvent(Element* oldFocusedElement, FocusType type)
173 if (type != FocusTypePage)
174 m_wasFocusedByMouse = type == FocusTypeMouse;
175 SVGGraphicsElement::dispatchFocusEvent(oldFocusedElement, type);
178 bool SVGAElement::isURLAttribute(const Attribute& attribute) const
180 return attribute.name().localName() == hrefAttr || SVGGraphicsElement::isURLAttribute(attribute);
183 bool SVGAElement::isMouseFocusable() const
186 return supportsFocus();
188 return SVGElement::isMouseFocusable();
191 bool SVGAElement::isKeyboardFocusable() const
193 if (isFocusable() && Element::supportsFocus())
194 return SVGElement::isKeyboardFocusable();
197 return document().frameHost()->chrome().client().tabsToLinks();
198 return SVGElement::isKeyboardFocusable();
201 bool SVGAElement::canStartSelection() const
204 return SVGElement::canStartSelection();
205 return hasEditableStyle();
208 bool SVGAElement::willRespondToMouseClickEvents()
210 return isLink() || SVGGraphicsElement::willRespondToMouseClickEvents();