| /* |
| * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org> |
| * Copyright (C) 2004, 2005, 2007 Rob Buis <buis@kde.org> |
| * Copyright (C) 2007 Eric Seidel <eric@webkit.org> |
| * Copyright (C) 2010 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 "core/svg/SVGAElement.h" |
| |
| #include "core/SVGNames.h" |
| #include "core/XLinkNames.h" |
| #include "core/dom/Attr.h" |
| #include "core/dom/Attribute.h" |
| #include "core/dom/Document.h" |
| #include "core/events/KeyboardEvent.h" |
| #include "core/events/MouseEvent.h" |
| #include "core/frame/FrameHost.h" |
| #include "core/frame/LocalFrame.h" |
| #include "core/html/HTMLAnchorElement.h" |
| #include "core/html/HTMLFormElement.h" |
| #include "core/html/parser/HTMLParserIdioms.h" |
| #include "core/layout/svg/LayoutSVGInline.h" |
| #include "core/layout/svg/LayoutSVGText.h" |
| #include "core/layout/svg/LayoutSVGTransformableContainer.h" |
| #include "core/loader/FrameLoadRequest.h" |
| #include "core/loader/FrameLoader.h" |
| #include "core/loader/FrameLoaderTypes.h" |
| #include "core/page/ChromeClient.h" |
| #include "core/page/Page.h" |
| #include "core/svg/animation/SVGSMILElement.h" |
| #include "platform/PlatformMouseEvent.h" |
| #include "platform/network/ResourceRequest.h" |
| |
| namespace blink { |
| |
| using namespace HTMLNames; |
| |
| inline SVGAElement::SVGAElement(Document& document) |
| : SVGGraphicsElement(SVGNames::aTag, document) |
| , SVGURIReference(this) |
| , m_svgTarget(SVGAnimatedString::create(this, SVGNames::targetAttr, SVGString::create())) |
| , m_wasFocusedByMouse(false) |
| { |
| addToPropertyMap(m_svgTarget); |
| } |
| |
| DEFINE_TRACE(SVGAElement) |
| { |
| visitor->trace(m_svgTarget); |
| SVGGraphicsElement::trace(visitor); |
| SVGURIReference::trace(visitor); |
| } |
| |
| DEFINE_NODE_FACTORY(SVGAElement) |
| |
| String SVGAElement::title() const |
| { |
| // If the xlink:title is set (non-empty string), use it. |
| const AtomicString& title = fastGetAttribute(XLinkNames::titleAttr); |
| if (!title.isEmpty()) |
| return title; |
| |
| // Otherwise, use the title of this element. |
| return SVGElement::title(); |
| } |
| |
| void SVGAElement::svgAttributeChanged(const QualifiedName& attrName) |
| { |
| // Unlike other SVG*Element classes, SVGAElement only listens to SVGURIReference changes |
| // as none of the other properties changes the linking behaviour for our <a> element. |
| if (SVGURIReference::isKnownAttribute(attrName)) { |
| SVGElement::InvalidationGuard invalidationGuard(this); |
| |
| bool wasLink = isLink(); |
| setIsLink(!hrefString().isNull()); |
| |
| if (wasLink || isLink()) { |
| pseudoStateChanged(CSSSelector::PseudoLink); |
| pseudoStateChanged(CSSSelector::PseudoVisited); |
| pseudoStateChanged(CSSSelector::PseudoAnyLink); |
| } |
| return; |
| } |
| |
| SVGGraphicsElement::svgAttributeChanged(attrName); |
| } |
| |
| LayoutObject* SVGAElement::createLayoutObject(const ComputedStyle&) |
| { |
| if (parentNode() && parentNode()->isSVGElement() && toSVGElement(parentNode())->isTextContent()) |
| return new LayoutSVGInline(this); |
| |
| return new LayoutSVGTransformableContainer(this); |
| } |
| |
| void SVGAElement::defaultEventHandler(Event* event) |
| { |
| if (isLink()) { |
| if (focused() && isEnterKeyKeydownEvent(event)) { |
| event->setDefaultHandled(); |
| dispatchSimulatedClick(event); |
| return; |
| } |
| |
| if (isLinkClick(event)) { |
| String url = stripLeadingAndTrailingHTMLSpaces(hrefString()); |
| |
| if (url[0] == '#') { |
| Element* targetElement = treeScope().getElementById(AtomicString(url.substring(1))); |
| if (targetElement && isSVGSMILElement(*targetElement)) { |
| toSVGSMILElement(targetElement)->beginByLinkActivation(); |
| event->setDefaultHandled(); |
| return; |
| } |
| } |
| |
| AtomicString target(m_svgTarget->currentValue()->value()); |
| if (target.isEmpty() && fastGetAttribute(XLinkNames::showAttr) == "new") |
| target = AtomicString("_blank", AtomicString::ConstructFromLiteral); |
| event->setDefaultHandled(); |
| |
| LocalFrame* frame = document().frame(); |
| if (!frame) |
| return; |
| FrameLoadRequest frameRequest(&document(), ResourceRequest(document().completeURL(url)), target); |
| frameRequest.setTriggeringEvent(event); |
| frame->loader().load(frameRequest); |
| return; |
| } |
| } |
| |
| SVGGraphicsElement::defaultEventHandler(event); |
| } |
| |
| short SVGAElement::tabIndex() const |
| { |
| // Skip the supportsFocus check in SVGElement. |
| return Element::tabIndex(); |
| } |
| |
| bool SVGAElement::supportsFocus() const |
| { |
| if (hasEditableStyle()) |
| return SVGGraphicsElement::supportsFocus(); |
| // If not a link we should still be able to focus the element if it has tabIndex. |
| return isLink() || SVGGraphicsElement::supportsFocus(); |
| } |
| |
| bool SVGAElement::shouldHaveFocusAppearance() const |
| { |
| return !m_wasFocusedByMouse || SVGGraphicsElement::supportsFocus(); |
| } |
| |
| // TODO(lanwei): Will add the InputDeviceCapabilities when SVGAElement gets focus later, see https://crbug.com/476530. |
| void SVGAElement::dispatchFocusEvent(Element* oldFocusedElement, WebFocusType type, InputDeviceCapabilities* sourceCapabilities) |
| { |
| if (type != WebFocusTypePage) |
| m_wasFocusedByMouse = type == WebFocusTypeMouse; |
| SVGGraphicsElement::dispatchFocusEvent(oldFocusedElement, type, sourceCapabilities); |
| } |
| |
| void SVGAElement::dispatchBlurEvent(Element* newFocusedElement, WebFocusType type, InputDeviceCapabilities* sourceCapabilities) |
| { |
| if (type != WebFocusTypePage) |
| m_wasFocusedByMouse = false; |
| SVGGraphicsElement::dispatchBlurEvent(newFocusedElement, type, sourceCapabilities); |
| } |
| |
| bool SVGAElement::isURLAttribute(const Attribute& attribute) const |
| { |
| return attribute.name().localName() == hrefAttr || SVGGraphicsElement::isURLAttribute(attribute); |
| } |
| |
| bool SVGAElement::isMouseFocusable() const |
| { |
| if (isLink()) |
| return supportsFocus(); |
| |
| return SVGElement::isMouseFocusable(); |
| } |
| |
| bool SVGAElement::isKeyboardFocusable() const |
| { |
| if (isFocusable() && Element::supportsFocus()) |
| return SVGElement::isKeyboardFocusable(); |
| if (isLink() && !document().frameHost()->chromeClient().tabsToLinks()) |
| return false; |
| return SVGElement::isKeyboardFocusable(); |
| } |
| |
| bool SVGAElement::canStartSelection() const |
| { |
| if (!isLink()) |
| return SVGElement::canStartSelection(); |
| return hasEditableStyle(); |
| } |
| |
| bool SVGAElement::willRespondToMouseClickEvents() |
| { |
| return isLink() || SVGGraphicsElement::willRespondToMouseClickEvents(); |
| } |
| |
| } // namespace blink |