| /* |
| * 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 "third_party/blink/renderer/core/svg/svg_a_element.h" |
| |
| #include "third_party/blink/renderer/core/dom/attr.h" |
| #include "third_party/blink/renderer/core/dom/attribute.h" |
| #include "third_party/blink/renderer/core/dom/document.h" |
| #include "third_party/blink/renderer/core/editing/editing_utilities.h" |
| #include "third_party/blink/renderer/core/events/keyboard_event.h" |
| #include "third_party/blink/renderer/core/events/mouse_event.h" |
| #include "third_party/blink/renderer/core/frame/local_frame.h" |
| #include "third_party/blink/renderer/core/html/forms/html_form_element.h" |
| #include "third_party/blink/renderer/core/html/html_anchor_element.h" |
| #include "third_party/blink/renderer/core/html/parser/html_parser_idioms.h" |
| #include "third_party/blink/renderer/core/layout/svg/layout_svg_inline.h" |
| #include "third_party/blink/renderer/core/layout/svg/layout_svg_text.h" |
| #include "third_party/blink/renderer/core/layout/svg/layout_svg_transformable_container.h" |
| #include "third_party/blink/renderer/core/loader/frame_load_request.h" |
| #include "third_party/blink/renderer/core/loader/frame_loader.h" |
| #include "third_party/blink/renderer/core/loader/frame_loader_types.h" |
| #include "third_party/blink/renderer/core/page/chrome_client.h" |
| #include "third_party/blink/renderer/core/page/page.h" |
| #include "third_party/blink/renderer/core/svg/animation/svg_smil_element.h" |
| #include "third_party/blink/renderer/core/svg_names.h" |
| #include "third_party/blink/renderer/core/xlink_names.h" |
| #include "third_party/blink/renderer/platform/heap/heap.h" |
| #include "third_party/blink/renderer/platform/loader/fetch/resource_request.h" |
| |
| namespace blink { |
| |
| SVGAElement::SVGAElement(Document& document) |
| : SVGGraphicsElement(svg_names::kATag, document), |
| SVGURIReference(this), |
| svg_target_( |
| MakeGarbageCollected<SVGAnimatedString>(this, |
| svg_names::kTargetAttr)) { |
| AddToPropertyMap(svg_target_); |
| } |
| |
| void SVGAElement::Trace(blink::Visitor* visitor) { |
| visitor->Trace(svg_target_); |
| SVGGraphicsElement::Trace(visitor); |
| SVGURIReference::Trace(visitor); |
| } |
| |
| String SVGAElement::title() const { |
| // If the xlink:title is set (non-empty string), use it. |
| const AtomicString& title = FastGetAttribute(xlink_names::kTitleAttr); |
| if (!title.IsEmpty()) |
| return title; |
| |
| // Otherwise, use the title of this element. |
| return SVGElement::title(); |
| } |
| |
| void SVGAElement::SvgAttributeChanged(const QualifiedName& attr_name) { |
| // 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(attr_name)) { |
| SVGElement::InvalidationGuard invalidation_guard(this); |
| |
| bool was_link = IsLink(); |
| SetIsLink(!HrefString().IsNull()); |
| |
| if (was_link || IsLink()) { |
| PseudoStateChanged(CSSSelector::kPseudoLink); |
| PseudoStateChanged(CSSSelector::kPseudoVisited); |
| PseudoStateChanged(CSSSelector::kPseudoWebkitAnyLink); |
| PseudoStateChanged(CSSSelector::kPseudoAnyLink); |
| } |
| return; |
| } |
| |
| SVGGraphicsElement::SvgAttributeChanged(attr_name); |
| } |
| |
| LayoutObject* SVGAElement::CreateLayoutObject(const ComputedStyle&, |
| LegacyLayout) { |
| auto* svg_element = DynamicTo<SVGElement>(parentNode()); |
| if (svg_element && svg_element->IsTextContent()) |
| return new LayoutSVGInline(this); |
| |
| return new LayoutSVGTransformableContainer(this); |
| } |
| |
| void SVGAElement::DefaultEventHandler(Event& event) { |
| if (IsLink()) { |
| if (IsFocused() && IsEnterKeyKeydownEvent(event)) { |
| event.SetDefaultHandled(); |
| DispatchSimulatedClick(&event); |
| return; |
| } |
| |
| if (Event* click_event = GetClickEventOrNull(event)) { |
| click_event->SetDefaultHandled(); |
| event.SetDefaultHandled(); |
| String url = StripLeadingAndTrailingHTMLSpaces(HrefString()); |
| |
| if (url[0] == '#') { |
| Element* target_element = |
| GetTreeScope().getElementById(AtomicString(url.Substring(1))); |
| if (auto* svg_smil_element = |
| DynamicTo<SVGSMILElement>(target_element)) { |
| svg_smil_element->BeginByLinkActivation(); |
| return; |
| } |
| } |
| |
| AtomicString target(svg_target_->CurrentValue()->Value()); |
| if (target.IsEmpty() && FastGetAttribute(xlink_names::kShowAttr) == "new") |
| target = AtomicString("_blank"); |
| if (!GetDocument().GetFrame()) |
| return; |
| |
| FrameLoadRequest frame_request( |
| &GetDocument(), ResourceRequest(GetDocument().CompleteURL(url))); |
| frame_request.SetNavigationPolicy(NavigationPolicyFromEvent(click_event)); |
| frame_request.SetTriggeringEventInfo( |
| click_event->isTrusted() ? TriggeringEventInfo::kFromTrustedEvent |
| : TriggeringEventInfo::kFromUntrustedEvent); |
| frame_request.GetResourceRequest().SetHasUserGesture( |
| LocalFrame::HasTransientUserActivation(GetDocument().GetFrame())); |
| |
| Frame* frame = GetDocument() |
| .GetFrame() |
| ->Tree() |
| .FindOrCreateFrameForNavigation(frame_request, target) |
| .frame; |
| if (!frame) |
| return; |
| frame->Navigate(frame_request, WebFrameLoadType::kStandard); |
| return; |
| } |
| } |
| |
| SVGGraphicsElement::DefaultEventHandler(event); |
| } |
| |
| bool SVGAElement::HasActivationBehavior() const { |
| return true; |
| } |
| |
| int SVGAElement::DefaultTabIndex() const { |
| return 0; |
| } |
| |
| bool SVGAElement::SupportsFocus() const { |
| if (HasEditableStyle(*this)) |
| 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 (GetDocument().LastFocusType() != kWebFocusTypeMouse) || |
| SVGGraphicsElement::SupportsFocus(); |
| } |
| |
| bool SVGAElement::IsURLAttribute(const Attribute& attribute) const { |
| return attribute.GetName().LocalName() == html_names::kHrefAttr || |
| 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() && !GetDocument().GetPage()->GetChromeClient().TabsToLinks()) |
| return false; |
| return SVGElement::IsKeyboardFocusable(); |
| } |
| |
| bool SVGAElement::CanStartSelection() const { |
| if (!IsLink()) |
| return SVGElement::CanStartSelection(); |
| return HasEditableStyle(*this); |
| } |
| |
| bool SVGAElement::WillRespondToMouseClickEvents() { |
| return IsLink() || SVGGraphicsElement::WillRespondToMouseClickEvents(); |
| } |
| |
| } // namespace blink |