mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-16 14:55:47 +00:00
9f1aec970a
Unfortunately, nsGenericHTMLElement::GetAssociatedEditor() cannot use concrete classes because it may return nsIEditor which is set via nsIDocShell.editor. The editor set to nsIDocShell may be implemented by JS since nsIEditor isn't marked as builtinclass. MozReview-Commit-ID: 6GY9LOYp4hM --HG-- extra : rebase_source : 3e0464067b30daf8254805458c5358d7ea644be8
4135 lines
124 KiB
C++
4135 lines
124 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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* Base class for all element classes; this provides an implementation
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* of DOM Core's nsIDOMElement, implements nsIContent, provides
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* utility methods for subclasses, and so forth.
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*/
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#include "mozilla/dom/ElementInlines.h"
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#include "AnimationCommon.h"
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#include "mozilla/DebugOnly.h"
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#include "mozilla/dom/Animation.h"
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#include "mozilla/dom/Attr.h"
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#include "mozilla/dom/Grid.h"
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#include "nsDOMAttributeMap.h"
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#include "nsIAtom.h"
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#include "nsIContentInlines.h"
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#include "mozilla/dom/NodeInfo.h"
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#include "nsIDocumentInlines.h"
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#include "mozilla/dom/DocumentTimeline.h"
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#include "nsIDOMNodeList.h"
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#include "nsIDOMDocument.h"
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#include "nsIContentIterator.h"
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#include "nsFocusManager.h"
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#include "nsFrameManager.h"
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#include "nsILinkHandler.h"
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#include "nsIScriptGlobalObject.h"
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#include "nsIURL.h"
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#include "nsContainerFrame.h"
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#include "nsIAnonymousContentCreator.h"
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#include "nsIPresShell.h"
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#include "nsPresContext.h"
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#include "nsStyleConsts.h"
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#include "nsString.h"
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#include "nsUnicharUtils.h"
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#include "nsIDOMEvent.h"
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#include "nsDOMCID.h"
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#include "nsIServiceManager.h"
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#include "nsIDOMCSSStyleDeclaration.h"
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#include "nsDOMCSSAttrDeclaration.h"
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#include "nsNameSpaceManager.h"
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#include "nsContentList.h"
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#include "nsVariant.h"
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#include "nsDOMTokenList.h"
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#include "nsXBLPrototypeBinding.h"
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#include "nsError.h"
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#include "nsDOMString.h"
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#include "nsIScriptSecurityManager.h"
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#include "nsIDOMMutationEvent.h"
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#include "mozilla/dom/AnimatableBinding.h"
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#include "mozilla/dom/HTMLDivElement.h"
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#include "mozilla/dom/HTMLSpanElement.h"
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#include "mozilla/dom/KeyframeAnimationOptionsBinding.h"
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#include "mozilla/AnimationComparator.h"
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#include "mozilla/AsyncEventDispatcher.h"
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#include "mozilla/ContentEvents.h"
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#include "mozilla/DeclarationBlockInlines.h"
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#include "mozilla/EffectSet.h"
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#include "mozilla/EventDispatcher.h"
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#include "mozilla/EventListenerManager.h"
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#include "mozilla/EventStateManager.h"
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#include "mozilla/EventStates.h"
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#include "mozilla/InternalMutationEvent.h"
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#include "mozilla/MouseEvents.h"
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#include "mozilla/TextEditor.h"
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#include "mozilla/TextEvents.h"
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#include "nsNodeUtils.h"
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#include "mozilla/dom/DirectionalityUtils.h"
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#include "nsDocument.h"
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#include "nsAttrValueOrString.h"
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#include "nsAttrValueInlines.h"
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#include "nsCSSPseudoElements.h"
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#ifdef MOZ_XUL
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#include "nsXULElement.h"
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#endif /* MOZ_XUL */
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#include "nsSVGElement.h"
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#include "nsFrameSelection.h"
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#ifdef DEBUG
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#include "nsRange.h"
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#endif
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#include "nsBindingManager.h"
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#include "nsXBLBinding.h"
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#include "nsPIDOMWindow.h"
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#include "nsPIBoxObject.h"
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#include "mozilla/dom/DOMRect.h"
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#include "nsSVGUtils.h"
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#include "nsLayoutUtils.h"
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#include "nsGkAtoms.h"
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#include "nsContentUtils.h"
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#include "ChildIterator.h"
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#include "nsIDOMEventListener.h"
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#include "nsIWebNavigation.h"
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#include "nsIBaseWindow.h"
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#include "nsIWidget.h"
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#include "nsNodeInfoManager.h"
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#include "nsICategoryManager.h"
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#include "nsIDOMDocumentType.h"
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#include "nsGenericHTMLElement.h"
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#include "nsContentCreatorFunctions.h"
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#include "nsIControllers.h"
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#include "nsView.h"
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#include "nsViewManager.h"
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#include "nsIScrollableFrame.h"
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#include "mozilla/css/StyleRule.h" /* For nsCSSSelectorList */
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#include "nsCSSRuleProcessor.h"
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#include "nsRuleProcessorData.h"
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#include "nsTextNode.h"
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#ifdef MOZ_XUL
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#include "nsIXULDocument.h"
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#endif /* MOZ_XUL */
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#include "nsCycleCollectionParticipant.h"
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#include "nsCCUncollectableMarker.h"
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#include "mozAutoDocUpdate.h"
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#include "nsCSSParser.h"
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#include "nsDOMMutationObserver.h"
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#include "nsWrapperCacheInlines.h"
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#include "xpcpublic.h"
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#include "nsIScriptError.h"
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#include "mozilla/Telemetry.h"
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#include "mozilla/CORSMode.h"
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#include "mozilla/dom/ShadowRoot.h"
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#include "mozilla/dom/NodeListBinding.h"
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#include "nsStyledElement.h"
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#include "nsXBLService.h"
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#include "nsITextControlElement.h"
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#include "nsITextControlFrame.h"
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#include "nsISupportsImpl.h"
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#include "mozilla/dom/CSSPseudoElement.h"
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#include "mozilla/dom/DocumentFragment.h"
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#include "mozilla/dom/KeyframeEffect.h"
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#include "mozilla/dom/KeyframeEffectBinding.h"
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#include "mozilla/dom/WindowBinding.h"
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#include "mozilla/dom/ElementBinding.h"
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#include "mozilla/dom/VRDisplay.h"
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#include "mozilla/IntegerPrintfMacros.h"
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#include "mozilla/Preferences.h"
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#include "nsComputedDOMStyle.h"
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#include "nsDOMStringMap.h"
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#include "DOMIntersectionObserver.h"
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#include "nsISpeculativeConnect.h"
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#include "DOMMatrix.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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//
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// Verify sizes of elements on 64-bit platforms. This should catch most memory
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// regressions, and is easy to verify locally since most developers are on
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// 64-bit machines. We use a template rather than a direct static assert so
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// that the error message actually displays the sizes.
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//
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// We need different numbers on certain build types to deal with the owning
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// thread pointer that comes with the non-threadsafe refcount on
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// FragmentOrElement.
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#ifdef MOZ_THREAD_SAFETY_OWNERSHIP_CHECKS_SUPPORTED
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#define EXTRA_DOM_ELEMENT_BYTES 8
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#else
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#define EXTRA_DOM_ELEMENT_BYTES 0
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#endif
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#define ASSERT_ELEMENT_SIZE(type, opt_size) \
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template<int a, int b> struct Check##type##Size \
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{ \
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static_assert(sizeof(void*) != 8 || a == b, "DOM size changed"); \
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}; \
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Check##type##Size<sizeof(type), opt_size + EXTRA_DOM_ELEMENT_BYTES> g##type##CES;
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// Note that mozjemalloc uses a 16 byte quantum, so 128 is a bin/bucket size.
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ASSERT_ELEMENT_SIZE(Element, 120);
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ASSERT_ELEMENT_SIZE(HTMLDivElement, 128);
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ASSERT_ELEMENT_SIZE(HTMLSpanElement, 128);
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#undef ASSERT_ELEMENT_SIZE
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#undef EXTRA_DOM_ELEMENT_BYTES
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nsIAtom*
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nsIContent::DoGetID() const
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{
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MOZ_ASSERT(HasID(), "Unexpected call");
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MOZ_ASSERT(IsElement(), "Only elements can have IDs");
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return AsElement()->GetParsedAttr(nsGkAtoms::id)->GetAtomValue();
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}
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const nsAttrValue*
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Element::DoGetClasses() const
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{
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MOZ_ASSERT(MayHaveClass(), "Unexpected call");
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if (IsSVGElement()) {
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const nsAttrValue* animClass =
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static_cast<const nsSVGElement*>(this)->GetAnimatedClassName();
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if (animClass) {
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return animClass;
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}
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}
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return GetParsedAttr(nsGkAtoms::_class);
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}
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NS_IMETHODIMP
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Element::QueryInterface(REFNSIID aIID, void** aInstancePtr)
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{
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NS_ASSERTION(aInstancePtr,
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"QueryInterface requires a non-NULL destination!");
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nsresult rv = FragmentOrElement::QueryInterface(aIID, aInstancePtr);
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if (NS_SUCCEEDED(rv)) {
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return NS_OK;
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}
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// Give the binding manager a chance to get an interface for this element.
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return OwnerDoc()->BindingManager()->GetBindingImplementation(this, aIID,
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aInstancePtr);
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}
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EventStates
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Element::IntrinsicState() const
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{
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return IsEditable() ? NS_EVENT_STATE_MOZ_READWRITE :
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NS_EVENT_STATE_MOZ_READONLY;
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}
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void
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Element::NotifyStateChange(EventStates aStates)
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{
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nsIDocument* doc = GetComposedDoc();
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if (doc) {
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nsAutoScriptBlocker scriptBlocker;
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doc->ContentStateChanged(this, aStates);
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}
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}
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void
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Element::UpdateLinkState(EventStates aState)
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{
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MOZ_ASSERT(!aState.HasAtLeastOneOfStates(~(NS_EVENT_STATE_VISITED |
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NS_EVENT_STATE_UNVISITED)),
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"Unexpected link state bits");
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mState =
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(mState & ~(NS_EVENT_STATE_VISITED | NS_EVENT_STATE_UNVISITED)) |
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aState;
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}
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void
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Element::UpdateState(bool aNotify)
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{
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EventStates oldState = mState;
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mState = IntrinsicState() | (oldState & EXTERNALLY_MANAGED_STATES);
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if (aNotify) {
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EventStates changedStates = oldState ^ mState;
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if (!changedStates.IsEmpty()) {
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nsIDocument* doc = GetComposedDoc();
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if (doc) {
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nsAutoScriptBlocker scriptBlocker;
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doc->ContentStateChanged(this, changedStates);
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}
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}
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}
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}
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void
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nsIContent::UpdateEditableState(bool aNotify)
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{
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// Guaranteed to be non-element content
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NS_ASSERTION(!IsElement(), "What happened here?");
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nsIContent *parent = GetParent();
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// Skip over unknown native anonymous content to avoid setting a flag we
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// can't clear later
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bool isUnknownNativeAnon = false;
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if (IsInNativeAnonymousSubtree()) {
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isUnknownNativeAnon = true;
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nsCOMPtr<nsIContent> root = this;
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while (root && !root->IsRootOfNativeAnonymousSubtree()) {
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root = root->GetParent();
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}
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// root should always be true here, but isn't -- bug 999416
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if (root) {
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nsIFrame* rootFrame = root->GetPrimaryFrame();
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if (rootFrame) {
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nsContainerFrame* parentFrame = rootFrame->GetParent();
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nsITextControlFrame* textCtrl = do_QueryFrame(parentFrame);
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isUnknownNativeAnon = !textCtrl;
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}
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}
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}
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SetEditableFlag(parent && parent->HasFlag(NODE_IS_EDITABLE) &&
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!isUnknownNativeAnon);
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}
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void
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Element::UpdateEditableState(bool aNotify)
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{
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nsIContent *parent = GetParent();
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SetEditableFlag(parent && parent->HasFlag(NODE_IS_EDITABLE));
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if (aNotify) {
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UpdateState(aNotify);
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} else {
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// Avoid calling UpdateState in this very common case, because
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// this gets called for pretty much every single element on
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// insertion into the document and UpdateState can be slow for
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// some kinds of elements even when not notifying.
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if (IsEditable()) {
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RemoveStatesSilently(NS_EVENT_STATE_MOZ_READONLY);
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AddStatesSilently(NS_EVENT_STATE_MOZ_READWRITE);
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} else {
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RemoveStatesSilently(NS_EVENT_STATE_MOZ_READWRITE);
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AddStatesSilently(NS_EVENT_STATE_MOZ_READONLY);
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}
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}
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}
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int32_t
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Element::TabIndex()
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{
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const nsAttrValue* attrVal = mAttrsAndChildren.GetAttr(nsGkAtoms::tabindex);
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if (attrVal && attrVal->Type() == nsAttrValue::eInteger) {
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return attrVal->GetIntegerValue();
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}
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return TabIndexDefault();
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}
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void
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Element::Focus(mozilla::ErrorResult& aError)
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{
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nsCOMPtr<nsIDOMElement> domElement = do_QueryInterface(this);
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nsFocusManager* fm = nsFocusManager::GetFocusManager();
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// Also other browsers seem to have the hack to not re-focus (and flush) when
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// the element is already focused.
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if (fm && domElement) {
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if (fm->CanSkipFocus(this)) {
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fm->NeedsFlushBeforeEventHandling(this);
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} else {
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aError = fm->SetFocus(domElement, 0);
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}
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}
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}
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void
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Element::SetTabIndex(int32_t aTabIndex, mozilla::ErrorResult& aError)
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{
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nsAutoString value;
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value.AppendInt(aTabIndex);
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SetAttr(nsGkAtoms::tabindex, value, aError);
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}
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void
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Element::Blur(mozilla::ErrorResult& aError)
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{
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if (!ShouldBlur(this)) {
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return;
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}
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nsIDocument* doc = GetComposedDoc();
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if (!doc) {
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return;
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}
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nsPIDOMWindowOuter* win = doc->GetWindow();
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nsIFocusManager* fm = nsFocusManager::GetFocusManager();
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if (win && fm) {
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aError = fm->ClearFocus(win);
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}
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}
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EventStates
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Element::StyleStateFromLocks() const
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{
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StyleStateLocks locksAndValues = LockedStyleStates();
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EventStates locks = locksAndValues.mLocks;
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EventStates values = locksAndValues.mValues;
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EventStates state = (mState & ~locks) | (locks & values);
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if (state.HasState(NS_EVENT_STATE_VISITED)) {
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return state & ~NS_EVENT_STATE_UNVISITED;
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}
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if (state.HasState(NS_EVENT_STATE_UNVISITED)) {
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return state & ~NS_EVENT_STATE_VISITED;
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}
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return state;
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}
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Element::StyleStateLocks
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Element::LockedStyleStates() const
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{
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StyleStateLocks* locks =
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static_cast<StyleStateLocks*>(GetProperty(nsGkAtoms::lockedStyleStates));
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if (locks) {
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return *locks;
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}
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return StyleStateLocks();
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}
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void
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Element::NotifyStyleStateChange(EventStates aStates)
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{
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nsIDocument* doc = GetComposedDoc();
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if (doc) {
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nsIPresShell *presShell = doc->GetShell();
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if (presShell) {
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nsAutoScriptBlocker scriptBlocker;
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presShell->ContentStateChanged(doc, this, aStates);
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}
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}
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}
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void
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Element::LockStyleStates(EventStates aStates, bool aEnabled)
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{
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StyleStateLocks* locks = new StyleStateLocks(LockedStyleStates());
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locks->mLocks |= aStates;
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if (aEnabled) {
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locks->mValues |= aStates;
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} else {
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locks->mValues &= ~aStates;
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}
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if (aStates.HasState(NS_EVENT_STATE_VISITED)) {
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locks->mLocks &= ~NS_EVENT_STATE_UNVISITED;
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}
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if (aStates.HasState(NS_EVENT_STATE_UNVISITED)) {
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locks->mLocks &= ~NS_EVENT_STATE_VISITED;
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}
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SetProperty(nsGkAtoms::lockedStyleStates, locks,
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nsINode::DeleteProperty<StyleStateLocks>);
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SetHasLockedStyleStates();
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NotifyStyleStateChange(aStates);
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}
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void
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Element::UnlockStyleStates(EventStates aStates)
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{
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StyleStateLocks* locks = new StyleStateLocks(LockedStyleStates());
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locks->mLocks &= ~aStates;
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if (locks->mLocks.IsEmpty()) {
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DeleteProperty(nsGkAtoms::lockedStyleStates);
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ClearHasLockedStyleStates();
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delete locks;
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}
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else {
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SetProperty(nsGkAtoms::lockedStyleStates, locks,
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nsINode::DeleteProperty<StyleStateLocks>);
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}
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NotifyStyleStateChange(aStates);
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|
}
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|
void
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Element::ClearStyleStateLocks()
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|
{
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|
StyleStateLocks locks = LockedStyleStates();
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DeleteProperty(nsGkAtoms::lockedStyleStates);
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ClearHasLockedStyleStates();
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NotifyStyleStateChange(locks.mLocks);
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}
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bool
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Element::GetBindingURL(nsIDocument *aDocument, css::URLValue **aResult)
|
|
{
|
|
// If we have a frame the frame has already loaded the binding. And
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|
// otherwise, don't do anything else here unless we're dealing with
|
|
// XUL or an HTML element that may have a plugin-related overlay
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|
// (i.e. object, embed, or applet).
|
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bool isXULorPluginElement = (IsXULElement() ||
|
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IsHTMLElement(nsGkAtoms::object) ||
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IsHTMLElement(nsGkAtoms::embed) ||
|
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IsHTMLElement(nsGkAtoms::applet));
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nsCOMPtr<nsIPresShell> shell = aDocument->GetShell();
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if (!shell || GetPrimaryFrame() || !isXULorPluginElement) {
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*aResult = nullptr;
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return true;
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}
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|
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// Get the computed -moz-binding directly from the style context
|
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RefPtr<nsStyleContext> sc =
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nsComputedDOMStyle::GetStyleContextNoFlush(this, nullptr, shell);
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NS_ENSURE_TRUE(sc, false);
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NS_IF_ADDREF(*aResult = sc->StyleDisplay()->mBinding);
|
|
return true;
|
|
}
|
|
|
|
JSObject*
|
|
Element::WrapObject(JSContext *aCx, JS::Handle<JSObject*> aGivenProto)
|
|
{
|
|
JS::Rooted<JSObject*> givenProto(aCx, aGivenProto);
|
|
JS::Rooted<JSObject*> customProto(aCx);
|
|
|
|
if (!givenProto) {
|
|
// Custom element prototype swizzling.
|
|
CustomElementData* data = GetCustomElementData();
|
|
if (data) {
|
|
// If this is a registered custom element then fix the prototype.
|
|
nsContentUtils::GetCustomPrototype(OwnerDoc(), NodeInfo()->NamespaceID(),
|
|
data->mType, &customProto);
|
|
if (customProto &&
|
|
NodePrincipal()->SubsumesConsideringDomain(nsContentUtils::ObjectPrincipal(customProto))) {
|
|
// Just go ahead and create with the right proto up front. Set
|
|
// customProto to null to flag that we don't need to do any post-facto
|
|
// proto fixups here.
|
|
givenProto = customProto;
|
|
customProto = nullptr;
|
|
}
|
|
}
|
|
}
|
|
|
|
JS::Rooted<JSObject*> obj(aCx, nsINode::WrapObject(aCx, givenProto));
|
|
if (!obj) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (customProto) {
|
|
// We want to set the custom prototype in the compartment where it was
|
|
// registered. In the case that |obj| and |prototype| are in different
|
|
// compartments, this will set the prototype on the |obj|'s wrapper and
|
|
// thus only visible in the wrapper's compartment, since we know obj's
|
|
// principal does not subsume customProto's in this case.
|
|
JSAutoCompartment ac(aCx, customProto);
|
|
JS::Rooted<JSObject*> wrappedObj(aCx, obj);
|
|
if (!JS_WrapObject(aCx, &wrappedObj) ||
|
|
!JS_SetPrototype(aCx, wrappedObj, customProto)) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
nsIDocument* doc;
|
|
if (HasFlag(NODE_FORCE_XBL_BINDINGS)) {
|
|
doc = OwnerDoc();
|
|
}
|
|
else {
|
|
doc = GetComposedDoc();
|
|
}
|
|
|
|
if (!doc) {
|
|
// There's no baseclass that cares about this call so we just
|
|
// return here.
|
|
return obj;
|
|
}
|
|
|
|
// We must ensure that the XBL Binding is installed before we hand
|
|
// back this object.
|
|
|
|
if (HasFlag(NODE_MAY_BE_IN_BINDING_MNGR) && GetXBLBinding()) {
|
|
// There's already a binding for this element so nothing left to
|
|
// be done here.
|
|
|
|
// In theory we could call ExecuteAttachedHandler here when it's safe to
|
|
// run script if we also removed the binding from the PAQ queue, but that
|
|
// seems like a scary change that would mosly just add more
|
|
// inconsistencies.
|
|
return obj;
|
|
}
|
|
|
|
// Make sure the style context goes away _before_ we load the binding
|
|
// since that can destroy the relevant presshell.
|
|
|
|
{
|
|
// Make a scope so that ~nsRefPtr can GC before returning obj.
|
|
RefPtr<css::URLValue> bindingURL;
|
|
bool ok = GetBindingURL(doc, getter_AddRefs(bindingURL));
|
|
if (!ok) {
|
|
dom::Throw(aCx, NS_ERROR_FAILURE);
|
|
return nullptr;
|
|
}
|
|
|
|
if (bindingURL) {
|
|
nsCOMPtr<nsIURI> uri = bindingURL->GetURI();
|
|
nsCOMPtr<nsIPrincipal> principal = bindingURL->mExtraData->GetPrincipal();
|
|
|
|
// We have a binding that must be installed.
|
|
bool dummy;
|
|
|
|
nsXBLService* xblService = nsXBLService::GetInstance();
|
|
if (!xblService) {
|
|
dom::Throw(aCx, NS_ERROR_NOT_AVAILABLE);
|
|
return nullptr;
|
|
}
|
|
|
|
RefPtr<nsXBLBinding> binding;
|
|
xblService->LoadBindings(this, uri, principal, getter_AddRefs(binding),
|
|
&dummy);
|
|
|
|
if (binding) {
|
|
if (nsContentUtils::IsSafeToRunScript()) {
|
|
binding->ExecuteAttachedHandler();
|
|
} else {
|
|
nsContentUtils::AddScriptRunner(
|
|
NewRunnableMethod(binding, &nsXBLBinding::ExecuteAttachedHandler));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return obj;
|
|
}
|
|
|
|
/* virtual */
|
|
nsINode*
|
|
Element::GetScopeChainParent() const
|
|
{
|
|
return OwnerDoc();
|
|
}
|
|
|
|
nsDOMTokenList*
|
|
Element::ClassList()
|
|
{
|
|
Element::nsDOMSlots* slots = DOMSlots();
|
|
|
|
if (!slots->mClassList) {
|
|
slots->mClassList = new nsDOMTokenList(this, nsGkAtoms::_class);
|
|
}
|
|
|
|
return slots->mClassList;
|
|
}
|
|
|
|
void
|
|
Element::GetAttributeNames(nsTArray<nsString>& aResult)
|
|
{
|
|
uint32_t count = mAttrsAndChildren.AttrCount();
|
|
for (uint32_t i = 0; i < count; ++i) {
|
|
const nsAttrName* name = mAttrsAndChildren.AttrNameAt(i);
|
|
name->GetQualifiedName(*aResult.AppendElement());
|
|
}
|
|
}
|
|
|
|
already_AddRefed<nsIHTMLCollection>
|
|
Element::GetElementsByTagName(const nsAString& aLocalName)
|
|
{
|
|
return NS_GetContentList(this, kNameSpaceID_Unknown, aLocalName);
|
|
}
|
|
|
|
nsIFrame*
|
|
Element::GetStyledFrame()
|
|
{
|
|
nsIFrame *frame = GetPrimaryFrame(FlushType::Layout);
|
|
return frame ? nsLayoutUtils::GetStyleFrame(frame) : nullptr;
|
|
}
|
|
|
|
nsIScrollableFrame*
|
|
Element::GetScrollFrame(nsIFrame **aStyledFrame, FlushType aFlushType)
|
|
{
|
|
// it isn't clear what to return for SVG nodes, so just return nothing
|
|
if (IsSVGElement()) {
|
|
if (aStyledFrame) {
|
|
*aStyledFrame = nullptr;
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
// Inline version of GetStyledFrame to use the given FlushType.
|
|
nsIFrame* frame = GetPrimaryFrame(aFlushType);
|
|
if (frame) {
|
|
frame = nsLayoutUtils::GetStyleFrame(frame);
|
|
}
|
|
|
|
if (aStyledFrame) {
|
|
*aStyledFrame = frame;
|
|
}
|
|
if (frame) {
|
|
// menu frames implement GetScrollTargetFrame but we don't want
|
|
// to use it here. Similar for comboboxes.
|
|
LayoutFrameType type = frame->Type();
|
|
if (type != LayoutFrameType::Menu &&
|
|
type != LayoutFrameType::ComboboxControl) {
|
|
nsIScrollableFrame *scrollFrame = frame->GetScrollTargetFrame();
|
|
if (scrollFrame) {
|
|
MOZ_ASSERT(!OwnerDoc()->IsScrollingElement(this),
|
|
"How can we have a scrollframe if we're the "
|
|
"scrollingElement for our document?");
|
|
return scrollFrame;
|
|
}
|
|
}
|
|
}
|
|
|
|
nsIDocument* doc = OwnerDoc();
|
|
// Note: This IsScrollingElement() call can flush frames, if we're the body of
|
|
// a quirks mode document.
|
|
bool isScrollingElement = OwnerDoc()->IsScrollingElement(this);
|
|
// Now reget *aStyledFrame if the caller asked for it, because that frame
|
|
// flush can kill it.
|
|
if (aStyledFrame) {
|
|
nsIFrame* frame = GetPrimaryFrame(FlushType::None);
|
|
if (frame) {
|
|
*aStyledFrame = nsLayoutUtils::GetStyleFrame(frame);
|
|
} else {
|
|
*aStyledFrame = nullptr;
|
|
}
|
|
}
|
|
|
|
if (isScrollingElement) {
|
|
// Our scroll info should map to the root scrollable frame if there is one.
|
|
if (nsIPresShell* shell = doc->GetShell()) {
|
|
return shell->GetRootScrollFrameAsScrollable();
|
|
}
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
void
|
|
Element::ScrollIntoView()
|
|
{
|
|
ScrollIntoView(ScrollIntoViewOptions());
|
|
}
|
|
|
|
void
|
|
Element::ScrollIntoView(bool aTop)
|
|
{
|
|
ScrollIntoViewOptions options;
|
|
if (!aTop) {
|
|
options.mBlock = ScrollLogicalPosition::End;
|
|
}
|
|
ScrollIntoView(options);
|
|
}
|
|
|
|
void
|
|
Element::ScrollIntoView(const ScrollIntoViewOptions &aOptions)
|
|
{
|
|
nsIDocument *document = GetComposedDoc();
|
|
if (!document) {
|
|
return;
|
|
}
|
|
|
|
// Get the presentation shell
|
|
nsCOMPtr<nsIPresShell> presShell = document->GetShell();
|
|
if (!presShell) {
|
|
return;
|
|
}
|
|
|
|
int16_t vpercent = (aOptions.mBlock == ScrollLogicalPosition::Start)
|
|
? nsIPresShell::SCROLL_TOP
|
|
: nsIPresShell::SCROLL_BOTTOM;
|
|
|
|
uint32_t flags = nsIPresShell::SCROLL_OVERFLOW_HIDDEN;
|
|
if (aOptions.mBehavior == ScrollBehavior::Smooth) {
|
|
flags |= nsIPresShell::SCROLL_SMOOTH;
|
|
} else if (aOptions.mBehavior == ScrollBehavior::Auto) {
|
|
flags |= nsIPresShell::SCROLL_SMOOTH_AUTO;
|
|
}
|
|
|
|
presShell->ScrollContentIntoView(this,
|
|
nsIPresShell::ScrollAxis(
|
|
vpercent,
|
|
nsIPresShell::SCROLL_ALWAYS),
|
|
nsIPresShell::ScrollAxis(),
|
|
flags);
|
|
}
|
|
|
|
void
|
|
Element::Scroll(const CSSIntPoint& aScroll, const ScrollOptions& aOptions)
|
|
{
|
|
nsIScrollableFrame* sf = GetScrollFrame();
|
|
if (sf) {
|
|
nsIScrollableFrame::ScrollMode scrollMode = nsIScrollableFrame::INSTANT;
|
|
if (aOptions.mBehavior == ScrollBehavior::Smooth) {
|
|
scrollMode = nsIScrollableFrame::SMOOTH_MSD;
|
|
} else if (aOptions.mBehavior == ScrollBehavior::Auto) {
|
|
ScrollbarStyles styles = sf->GetScrollbarStyles();
|
|
if (styles.mScrollBehavior == NS_STYLE_SCROLL_BEHAVIOR_SMOOTH) {
|
|
scrollMode = nsIScrollableFrame::SMOOTH_MSD;
|
|
}
|
|
}
|
|
|
|
sf->ScrollToCSSPixels(aScroll, scrollMode);
|
|
}
|
|
}
|
|
|
|
void
|
|
Element::Scroll(double aXScroll, double aYScroll)
|
|
{
|
|
// Convert -Inf, Inf, and NaN to 0; otherwise, convert by C-style cast.
|
|
auto scrollPos = CSSIntPoint::Truncate(mozilla::ToZeroIfNonfinite(aXScroll),
|
|
mozilla::ToZeroIfNonfinite(aYScroll));
|
|
|
|
Scroll(scrollPos, ScrollOptions());
|
|
}
|
|
|
|
void
|
|
Element::Scroll(const ScrollToOptions& aOptions)
|
|
{
|
|
nsIScrollableFrame *sf = GetScrollFrame();
|
|
if (sf) {
|
|
CSSIntPoint scrollPos = sf->GetScrollPositionCSSPixels();
|
|
if (aOptions.mLeft.WasPassed()) {
|
|
scrollPos.x = mozilla::ToZeroIfNonfinite(aOptions.mLeft.Value());
|
|
}
|
|
if (aOptions.mTop.WasPassed()) {
|
|
scrollPos.y = mozilla::ToZeroIfNonfinite(aOptions.mTop.Value());
|
|
}
|
|
Scroll(scrollPos, aOptions);
|
|
}
|
|
}
|
|
|
|
void
|
|
Element::ScrollTo(double aXScroll, double aYScroll)
|
|
{
|
|
Scroll(aXScroll, aYScroll);
|
|
}
|
|
|
|
void
|
|
Element::ScrollTo(const ScrollToOptions& aOptions)
|
|
{
|
|
Scroll(aOptions);
|
|
}
|
|
|
|
void
|
|
Element::ScrollBy(double aXScrollDif, double aYScrollDif)
|
|
{
|
|
nsIScrollableFrame *sf = GetScrollFrame();
|
|
if (sf) {
|
|
CSSIntPoint scrollPos = sf->GetScrollPositionCSSPixels();
|
|
scrollPos += CSSIntPoint::Truncate(mozilla::ToZeroIfNonfinite(aXScrollDif),
|
|
mozilla::ToZeroIfNonfinite(aYScrollDif));
|
|
Scroll(scrollPos, ScrollOptions());
|
|
}
|
|
}
|
|
|
|
void
|
|
Element::ScrollBy(const ScrollToOptions& aOptions)
|
|
{
|
|
nsIScrollableFrame *sf = GetScrollFrame();
|
|
if (sf) {
|
|
CSSIntPoint scrollPos = sf->GetScrollPositionCSSPixels();
|
|
if (aOptions.mLeft.WasPassed()) {
|
|
scrollPos.x += mozilla::ToZeroIfNonfinite(aOptions.mLeft.Value());
|
|
}
|
|
if (aOptions.mTop.WasPassed()) {
|
|
scrollPos.y += mozilla::ToZeroIfNonfinite(aOptions.mTop.Value());
|
|
}
|
|
Scroll(scrollPos, aOptions);
|
|
}
|
|
}
|
|
|
|
int32_t
|
|
Element::ScrollTop()
|
|
{
|
|
nsIScrollableFrame* sf = GetScrollFrame();
|
|
return sf ? sf->GetScrollPositionCSSPixels().y : 0;
|
|
}
|
|
|
|
void
|
|
Element::SetScrollTop(int32_t aScrollTop)
|
|
{
|
|
// When aScrollTop is 0, we don't need to flush layout to scroll to that
|
|
// point; we know 0 is always in range. At least we think so... But we do
|
|
// need to flush frames so we ensure we find the right scrollable frame if
|
|
// there is one.
|
|
//
|
|
// If aScrollTop is nonzero, we need to flush layout because we need to figure
|
|
// out what our real scrollTopMax is.
|
|
FlushType flushType = aScrollTop == 0 ? FlushType::Frames : FlushType::Layout;
|
|
nsIScrollableFrame* sf = GetScrollFrame(nullptr, flushType);
|
|
if (sf) {
|
|
nsIScrollableFrame::ScrollMode scrollMode = nsIScrollableFrame::INSTANT;
|
|
if (sf->GetScrollbarStyles().mScrollBehavior == NS_STYLE_SCROLL_BEHAVIOR_SMOOTH) {
|
|
scrollMode = nsIScrollableFrame::SMOOTH_MSD;
|
|
}
|
|
sf->ScrollToCSSPixels(CSSIntPoint(sf->GetScrollPositionCSSPixels().x,
|
|
aScrollTop),
|
|
scrollMode);
|
|
}
|
|
}
|
|
|
|
int32_t
|
|
Element::ScrollLeft()
|
|
{
|
|
nsIScrollableFrame* sf = GetScrollFrame();
|
|
return sf ? sf->GetScrollPositionCSSPixels().x : 0;
|
|
}
|
|
|
|
void
|
|
Element::SetScrollLeft(int32_t aScrollLeft)
|
|
{
|
|
// We can't assume things here based on the value of aScrollLeft, because
|
|
// depending on our direction and layout 0 may or may not be in our scroll
|
|
// range. So we need to flush layout no matter what.
|
|
nsIScrollableFrame* sf = GetScrollFrame();
|
|
if (sf) {
|
|
nsIScrollableFrame::ScrollMode scrollMode = nsIScrollableFrame::INSTANT;
|
|
if (sf->GetScrollbarStyles().mScrollBehavior == NS_STYLE_SCROLL_BEHAVIOR_SMOOTH) {
|
|
scrollMode = nsIScrollableFrame::SMOOTH_MSD;
|
|
}
|
|
|
|
sf->ScrollToCSSPixels(CSSIntPoint(aScrollLeft,
|
|
sf->GetScrollPositionCSSPixels().y),
|
|
scrollMode);
|
|
}
|
|
}
|
|
|
|
|
|
bool
|
|
Element::ScrollByNoFlush(int32_t aDx, int32_t aDy)
|
|
{
|
|
nsIScrollableFrame* sf = GetScrollFrame(nullptr, FlushType::None);
|
|
if (!sf) {
|
|
return false;
|
|
}
|
|
|
|
AutoWeakFrame weakRef(sf->GetScrolledFrame());
|
|
|
|
CSSIntPoint before = sf->GetScrollPositionCSSPixels();
|
|
sf->ScrollToCSSPixelsApproximate(CSSIntPoint(before.x + aDx, before.y + aDy));
|
|
|
|
// The frame was destroyed, can't keep on scrolling.
|
|
if (!weakRef.IsAlive()) {
|
|
return false;
|
|
}
|
|
|
|
CSSIntPoint after = sf->GetScrollPositionCSSPixels();
|
|
return (before != after);
|
|
}
|
|
|
|
void
|
|
Element::MozScrollSnap()
|
|
{
|
|
nsIScrollableFrame* sf = GetScrollFrame(nullptr, FlushType::None);
|
|
if (sf) {
|
|
sf->ScrollSnap();
|
|
}
|
|
}
|
|
|
|
static nsSize GetScrollRectSizeForOverflowVisibleFrame(nsIFrame* aFrame)
|
|
{
|
|
if (!aFrame) {
|
|
return nsSize(0,0);
|
|
}
|
|
|
|
nsRect paddingRect = aFrame->GetPaddingRectRelativeToSelf();
|
|
nsOverflowAreas overflowAreas(paddingRect, paddingRect);
|
|
// Add the scrollable overflow areas of children (if any) to the paddingRect.
|
|
// It's important to start with the paddingRect, otherwise if there are no
|
|
// children the overflow rect will be 0,0,0,0 which will force the point 0,0
|
|
// to be included in the final rect.
|
|
nsLayoutUtils::UnionChildOverflow(aFrame, overflowAreas);
|
|
// Make sure that an empty padding-rect's edges are included, by adding
|
|
// the padding-rect in again with UnionEdges.
|
|
nsRect overflowRect =
|
|
overflowAreas.ScrollableOverflow().UnionEdges(paddingRect);
|
|
return nsLayoutUtils::GetScrolledRect(aFrame,
|
|
overflowRect, paddingRect.Size(),
|
|
aFrame->StyleVisibility()->mDirection).Size();
|
|
}
|
|
|
|
int32_t
|
|
Element::ScrollHeight()
|
|
{
|
|
if (IsSVGElement())
|
|
return 0;
|
|
|
|
nsIScrollableFrame* sf = GetScrollFrame();
|
|
nscoord height;
|
|
if (sf) {
|
|
height = sf->GetScrollRange().height + sf->GetScrollPortRect().height;
|
|
} else {
|
|
height = GetScrollRectSizeForOverflowVisibleFrame(GetStyledFrame()).height;
|
|
}
|
|
|
|
return nsPresContext::AppUnitsToIntCSSPixels(height);
|
|
}
|
|
|
|
int32_t
|
|
Element::ScrollWidth()
|
|
{
|
|
if (IsSVGElement())
|
|
return 0;
|
|
|
|
nsIScrollableFrame* sf = GetScrollFrame();
|
|
nscoord width;
|
|
if (sf) {
|
|
width = sf->GetScrollRange().width + sf->GetScrollPortRect().width;
|
|
} else {
|
|
width = GetScrollRectSizeForOverflowVisibleFrame(GetStyledFrame()).width;
|
|
}
|
|
|
|
return nsPresContext::AppUnitsToIntCSSPixels(width);
|
|
}
|
|
|
|
nsRect
|
|
Element::GetClientAreaRect()
|
|
{
|
|
nsIFrame* styledFrame;
|
|
nsIScrollableFrame* sf = GetScrollFrame(&styledFrame);
|
|
|
|
if (sf) {
|
|
return sf->GetScrollPortRect();
|
|
}
|
|
|
|
if (styledFrame &&
|
|
(styledFrame->StyleDisplay()->mDisplay != StyleDisplay::Inline ||
|
|
styledFrame->IsFrameOfType(nsIFrame::eReplaced))) {
|
|
// Special case code to make client area work even when there isn't
|
|
// a scroll view, see bug 180552, bug 227567.
|
|
return styledFrame->GetPaddingRect() - styledFrame->GetPositionIgnoringScrolling();
|
|
}
|
|
|
|
// SVG nodes reach here and just return 0
|
|
return nsRect(0, 0, 0, 0);
|
|
}
|
|
|
|
already_AddRefed<DOMRect>
|
|
Element::GetBoundingClientRect()
|
|
{
|
|
RefPtr<DOMRect> rect = new DOMRect(this);
|
|
|
|
nsIFrame* frame = GetPrimaryFrame(FlushType::Layout);
|
|
if (!frame) {
|
|
// display:none, perhaps? Return the empty rect
|
|
return rect.forget();
|
|
}
|
|
|
|
nsRect r = nsLayoutUtils::GetAllInFlowRectsUnion(frame,
|
|
nsLayoutUtils::GetContainingBlockForClientRect(frame),
|
|
nsLayoutUtils::RECTS_ACCOUNT_FOR_TRANSFORMS);
|
|
rect->SetLayoutRect(r);
|
|
return rect.forget();
|
|
}
|
|
|
|
already_AddRefed<DOMRectList>
|
|
Element::GetClientRects()
|
|
{
|
|
RefPtr<DOMRectList> rectList = new DOMRectList(this);
|
|
|
|
nsIFrame* frame = GetPrimaryFrame(FlushType::Layout);
|
|
if (!frame) {
|
|
// display:none, perhaps? Return an empty list
|
|
return rectList.forget();
|
|
}
|
|
|
|
nsLayoutUtils::RectListBuilder builder(rectList);
|
|
nsLayoutUtils::GetAllInFlowRects(frame,
|
|
nsLayoutUtils::GetContainingBlockForClientRect(frame), &builder,
|
|
nsLayoutUtils::RECTS_ACCOUNT_FOR_TRANSFORMS);
|
|
return rectList.forget();
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
void
|
|
Element::AddToIdTable(nsIAtom* aId)
|
|
{
|
|
NS_ASSERTION(HasID(), "Node doesn't have an ID?");
|
|
if (IsInShadowTree()) {
|
|
ShadowRoot* containingShadow = GetContainingShadow();
|
|
containingShadow->AddToIdTable(this, aId);
|
|
} else {
|
|
nsIDocument* doc = GetUncomposedDoc();
|
|
if (doc && (!IsInAnonymousSubtree() || doc->IsXULDocument())) {
|
|
doc->AddToIdTable(this, aId);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
Element::RemoveFromIdTable()
|
|
{
|
|
if (!HasID()) {
|
|
return;
|
|
}
|
|
|
|
nsIAtom* id = DoGetID();
|
|
if (IsInShadowTree()) {
|
|
ShadowRoot* containingShadow = GetContainingShadow();
|
|
// Check for containingShadow because it may have
|
|
// been deleted during unlinking.
|
|
if (containingShadow) {
|
|
containingShadow->RemoveFromIdTable(this, id);
|
|
}
|
|
} else {
|
|
nsIDocument* doc = GetUncomposedDoc();
|
|
if (doc && (!IsInAnonymousSubtree() || doc->IsXULDocument())) {
|
|
doc->RemoveFromIdTable(this, id);
|
|
}
|
|
}
|
|
}
|
|
|
|
already_AddRefed<ShadowRoot>
|
|
Element::CreateShadowRoot(ErrorResult& aError)
|
|
{
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
|
|
RefPtr<mozilla::dom::NodeInfo> nodeInfo;
|
|
nodeInfo = mNodeInfo->NodeInfoManager()->GetNodeInfo(
|
|
nsGkAtoms::documentFragmentNodeName, nullptr, kNameSpaceID_None,
|
|
nsIDOMNode::DOCUMENT_FRAGMENT_NODE);
|
|
|
|
RefPtr<nsXBLDocumentInfo> docInfo = new nsXBLDocumentInfo(OwnerDoc());
|
|
|
|
nsXBLPrototypeBinding* protoBinding = new nsXBLPrototypeBinding();
|
|
aError = protoBinding->Init(NS_LITERAL_CSTRING("shadowroot"),
|
|
docInfo, nullptr, true);
|
|
if (aError.Failed()) {
|
|
delete protoBinding;
|
|
return nullptr;
|
|
}
|
|
|
|
nsIDocument* doc = GetComposedDoc();
|
|
nsIContent* destroyedFramesFor = nullptr;
|
|
if (doc) {
|
|
nsIPresShell* shell = doc->GetShell();
|
|
if (shell) {
|
|
shell->DestroyFramesFor(this, &destroyedFramesFor);
|
|
MOZ_ASSERT(!shell->FrameManager()->GetDisplayContentsStyleFor(this));
|
|
}
|
|
}
|
|
MOZ_ASSERT(!GetPrimaryFrame());
|
|
|
|
// Unlike for XBL, false is the default for inheriting style.
|
|
protoBinding->SetInheritsStyle(false);
|
|
|
|
// Calling SetPrototypeBinding takes ownership of protoBinding.
|
|
docInfo->SetPrototypeBinding(NS_LITERAL_CSTRING("shadowroot"), protoBinding);
|
|
|
|
RefPtr<ShadowRoot> shadowRoot = new ShadowRoot(this, nodeInfo.forget(),
|
|
protoBinding);
|
|
|
|
shadowRoot->SetIsComposedDocParticipant(IsInComposedDoc());
|
|
|
|
// Replace the old ShadowRoot with the new one and let the old
|
|
// ShadowRoot know about the younger ShadowRoot because the old
|
|
// ShadowRoot is projected into the younger ShadowRoot's shadow
|
|
// insertion point (if it exists).
|
|
ShadowRoot* olderShadow = GetShadowRoot();
|
|
SetShadowRoot(shadowRoot);
|
|
if (olderShadow) {
|
|
olderShadow->SetYoungerShadow(shadowRoot);
|
|
|
|
// Unbind children of older shadow root because they
|
|
// are no longer in the composed tree.
|
|
for (nsIContent* child = olderShadow->GetFirstChild(); child;
|
|
child = child->GetNextSibling()) {
|
|
child->UnbindFromTree(true, false);
|
|
}
|
|
|
|
olderShadow->SetIsComposedDocParticipant(false);
|
|
}
|
|
|
|
// xblBinding takes ownership of docInfo.
|
|
RefPtr<nsXBLBinding> xblBinding = new nsXBLBinding(shadowRoot, protoBinding);
|
|
shadowRoot->SetAssociatedBinding(xblBinding);
|
|
xblBinding->SetBoundElement(this);
|
|
|
|
SetXBLBinding(xblBinding);
|
|
|
|
// Recreate the frame for the bound content because binding a ShadowRoot
|
|
// changes how things are rendered.
|
|
if (doc) {
|
|
MOZ_ASSERT(doc == GetComposedDoc());
|
|
nsIPresShell* shell = doc->GetShell();
|
|
if (shell) {
|
|
shell->CreateFramesFor(destroyedFramesFor);
|
|
}
|
|
}
|
|
|
|
return shadowRoot.forget();
|
|
}
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(DestinationInsertionPointList, mParent,
|
|
mDestinationPoints)
|
|
|
|
NS_INTERFACE_TABLE_HEAD(DestinationInsertionPointList)
|
|
NS_WRAPPERCACHE_INTERFACE_TABLE_ENTRY
|
|
NS_INTERFACE_TABLE(DestinationInsertionPointList, nsINodeList, nsIDOMNodeList)
|
|
NS_INTERFACE_TABLE_TO_MAP_SEGUE_CYCLE_COLLECTION(DestinationInsertionPointList)
|
|
NS_INTERFACE_MAP_END
|
|
|
|
NS_IMPL_CYCLE_COLLECTING_ADDREF(DestinationInsertionPointList)
|
|
NS_IMPL_CYCLE_COLLECTING_RELEASE(DestinationInsertionPointList)
|
|
|
|
DestinationInsertionPointList::DestinationInsertionPointList(Element* aElement)
|
|
: mParent(aElement)
|
|
{
|
|
nsTArray<nsIContent*>* destPoints = aElement->GetExistingDestInsertionPoints();
|
|
if (destPoints) {
|
|
for (uint32_t i = 0; i < destPoints->Length(); i++) {
|
|
mDestinationPoints.AppendElement(destPoints->ElementAt(i));
|
|
}
|
|
}
|
|
}
|
|
|
|
DestinationInsertionPointList::~DestinationInsertionPointList()
|
|
{
|
|
}
|
|
|
|
nsIContent*
|
|
DestinationInsertionPointList::Item(uint32_t aIndex)
|
|
{
|
|
return mDestinationPoints.SafeElementAt(aIndex);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
DestinationInsertionPointList::Item(uint32_t aIndex, nsIDOMNode** aReturn)
|
|
{
|
|
nsIContent* item = Item(aIndex);
|
|
if (!item) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
return CallQueryInterface(item, aReturn);
|
|
}
|
|
|
|
uint32_t
|
|
DestinationInsertionPointList::Length() const
|
|
{
|
|
return mDestinationPoints.Length();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
DestinationInsertionPointList::GetLength(uint32_t* aLength)
|
|
{
|
|
*aLength = Length();
|
|
return NS_OK;
|
|
}
|
|
|
|
int32_t
|
|
DestinationInsertionPointList::IndexOf(nsIContent* aContent)
|
|
{
|
|
return mDestinationPoints.IndexOf(aContent);
|
|
}
|
|
|
|
JSObject*
|
|
DestinationInsertionPointList::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
|
|
{
|
|
return NodeListBinding::Wrap(aCx, this, aGivenProto);
|
|
}
|
|
|
|
already_AddRefed<DestinationInsertionPointList>
|
|
Element::GetDestinationInsertionPoints()
|
|
{
|
|
RefPtr<DestinationInsertionPointList> list =
|
|
new DestinationInsertionPointList(this);
|
|
return list.forget();
|
|
}
|
|
|
|
void
|
|
Element::GetAttribute(const nsAString& aName, DOMString& aReturn)
|
|
{
|
|
const nsAttrValue* val =
|
|
mAttrsAndChildren.GetAttr(aName,
|
|
IsHTMLElement() && IsInHTMLDocument() ?
|
|
eIgnoreCase : eCaseMatters);
|
|
if (val) {
|
|
val->ToString(aReturn);
|
|
} else {
|
|
if (IsXULElement()) {
|
|
// XXX should be SetDOMStringToNull(aReturn);
|
|
// See bug 232598
|
|
// aReturn is already empty
|
|
} else {
|
|
aReturn.SetNull();
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
Element::SetAttribute(const nsAString& aName,
|
|
const nsAString& aValue,
|
|
ErrorResult& aError)
|
|
{
|
|
aError = nsContentUtils::CheckQName(aName, false);
|
|
if (aError.Failed()) {
|
|
return;
|
|
}
|
|
|
|
nsAutoString nameToUse;
|
|
const nsAttrName* name = InternalGetAttrNameFromQName(aName, &nameToUse);
|
|
if (!name) {
|
|
nsCOMPtr<nsIAtom> nameAtom = NS_AtomizeMainThread(nameToUse);
|
|
if (!nameAtom) {
|
|
aError.Throw(NS_ERROR_OUT_OF_MEMORY);
|
|
return;
|
|
}
|
|
aError = SetAttr(kNameSpaceID_None, nameAtom, aValue, true);
|
|
return;
|
|
}
|
|
|
|
aError = SetAttr(name->NamespaceID(), name->LocalName(), name->GetPrefix(),
|
|
aValue, true);
|
|
return;
|
|
}
|
|
|
|
void
|
|
Element::RemoveAttribute(const nsAString& aName, ErrorResult& aError)
|
|
{
|
|
const nsAttrName* name = InternalGetAttrNameFromQName(aName);
|
|
|
|
if (!name) {
|
|
// If there is no canonical nsAttrName for this attribute name, then the
|
|
// attribute does not exist and we can't get its namespace ID and
|
|
// local name below, so we return early.
|
|
return;
|
|
}
|
|
|
|
// Hold a strong reference here so that the atom or nodeinfo doesn't go
|
|
// away during UnsetAttr. If it did UnsetAttr would be left with a
|
|
// dangling pointer as argument without knowing it.
|
|
nsAttrName tmp(*name);
|
|
|
|
aError = UnsetAttr(name->NamespaceID(), name->LocalName(), true);
|
|
}
|
|
|
|
Attr*
|
|
Element::GetAttributeNode(const nsAString& aName)
|
|
{
|
|
OwnerDoc()->WarnOnceAbout(nsIDocument::eGetAttributeNode);
|
|
return Attributes()->GetNamedItem(aName);
|
|
}
|
|
|
|
already_AddRefed<Attr>
|
|
Element::SetAttributeNode(Attr& aNewAttr, ErrorResult& aError)
|
|
{
|
|
// XXXbz can we just remove this warning and the one in setAttributeNodeNS and
|
|
// alias setAttributeNode to setAttributeNodeNS?
|
|
OwnerDoc()->WarnOnceAbout(nsIDocument::eSetAttributeNode);
|
|
|
|
return Attributes()->SetNamedItemNS(aNewAttr, aError);
|
|
}
|
|
|
|
already_AddRefed<Attr>
|
|
Element::RemoveAttributeNode(Attr& aAttribute,
|
|
ErrorResult& aError)
|
|
{
|
|
Element *elem = aAttribute.GetElement();
|
|
if (elem != this) {
|
|
aError.Throw(NS_ERROR_DOM_NOT_FOUND_ERR);
|
|
return nullptr;
|
|
}
|
|
|
|
OwnerDoc()->WarnOnceAbout(nsIDocument::eRemoveAttributeNode);
|
|
nsAutoString nameSpaceURI;
|
|
aAttribute.NodeInfo()->GetNamespaceURI(nameSpaceURI);
|
|
return Attributes()->RemoveNamedItemNS(nameSpaceURI, aAttribute.NodeInfo()->LocalName(), aError);
|
|
}
|
|
|
|
void
|
|
Element::GetAttributeNS(const nsAString& aNamespaceURI,
|
|
const nsAString& aLocalName,
|
|
nsAString& aReturn)
|
|
{
|
|
int32_t nsid =
|
|
nsContentUtils::NameSpaceManager()->GetNameSpaceID(aNamespaceURI,
|
|
nsContentUtils::IsChromeDoc(OwnerDoc()));
|
|
|
|
if (nsid == kNameSpaceID_Unknown) {
|
|
// Unknown namespace means no attribute.
|
|
SetDOMStringToNull(aReturn);
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsIAtom> name = NS_AtomizeMainThread(aLocalName);
|
|
bool hasAttr = GetAttr(nsid, name, aReturn);
|
|
if (!hasAttr) {
|
|
SetDOMStringToNull(aReturn);
|
|
}
|
|
}
|
|
|
|
void
|
|
Element::SetAttributeNS(const nsAString& aNamespaceURI,
|
|
const nsAString& aQualifiedName,
|
|
const nsAString& aValue,
|
|
ErrorResult& aError)
|
|
{
|
|
RefPtr<mozilla::dom::NodeInfo> ni;
|
|
aError =
|
|
nsContentUtils::GetNodeInfoFromQName(aNamespaceURI, aQualifiedName,
|
|
mNodeInfo->NodeInfoManager(),
|
|
nsIDOMNode::ATTRIBUTE_NODE,
|
|
getter_AddRefs(ni));
|
|
if (aError.Failed()) {
|
|
return;
|
|
}
|
|
|
|
aError = SetAttr(ni->NamespaceID(), ni->NameAtom(), ni->GetPrefixAtom(),
|
|
aValue, true);
|
|
}
|
|
|
|
void
|
|
Element::RemoveAttributeNS(const nsAString& aNamespaceURI,
|
|
const nsAString& aLocalName,
|
|
ErrorResult& aError)
|
|
{
|
|
nsCOMPtr<nsIAtom> name = NS_AtomizeMainThread(aLocalName);
|
|
int32_t nsid =
|
|
nsContentUtils::NameSpaceManager()->GetNameSpaceID(aNamespaceURI,
|
|
nsContentUtils::IsChromeDoc(OwnerDoc()));
|
|
|
|
if (nsid == kNameSpaceID_Unknown) {
|
|
// If the namespace ID is unknown, it means there can't possibly be an
|
|
// existing attribute. We would need a known namespace ID to pass into
|
|
// UnsetAttr, so we return early if we don't have one.
|
|
return;
|
|
}
|
|
|
|
aError = UnsetAttr(nsid, name, true);
|
|
}
|
|
|
|
Attr*
|
|
Element::GetAttributeNodeNS(const nsAString& aNamespaceURI,
|
|
const nsAString& aLocalName)
|
|
{
|
|
OwnerDoc()->WarnOnceAbout(nsIDocument::eGetAttributeNodeNS);
|
|
|
|
return GetAttributeNodeNSInternal(aNamespaceURI, aLocalName);
|
|
}
|
|
|
|
Attr*
|
|
Element::GetAttributeNodeNSInternal(const nsAString& aNamespaceURI,
|
|
const nsAString& aLocalName)
|
|
{
|
|
return Attributes()->GetNamedItemNS(aNamespaceURI, aLocalName);
|
|
}
|
|
|
|
already_AddRefed<Attr>
|
|
Element::SetAttributeNodeNS(Attr& aNewAttr,
|
|
ErrorResult& aError)
|
|
{
|
|
OwnerDoc()->WarnOnceAbout(nsIDocument::eSetAttributeNodeNS);
|
|
return Attributes()->SetNamedItemNS(aNewAttr, aError);
|
|
}
|
|
|
|
already_AddRefed<nsIHTMLCollection>
|
|
Element::GetElementsByTagNameNS(const nsAString& aNamespaceURI,
|
|
const nsAString& aLocalName,
|
|
ErrorResult& aError)
|
|
{
|
|
int32_t nameSpaceId = kNameSpaceID_Wildcard;
|
|
|
|
if (!aNamespaceURI.EqualsLiteral("*")) {
|
|
aError =
|
|
nsContentUtils::NameSpaceManager()->RegisterNameSpace(aNamespaceURI,
|
|
nameSpaceId);
|
|
if (aError.Failed()) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
NS_ASSERTION(nameSpaceId != kNameSpaceID_Unknown, "Unexpected namespace ID!");
|
|
|
|
return NS_GetContentList(this, nameSpaceId, aLocalName);
|
|
}
|
|
|
|
bool
|
|
Element::HasAttributeNS(const nsAString& aNamespaceURI,
|
|
const nsAString& aLocalName) const
|
|
{
|
|
int32_t nsid =
|
|
nsContentUtils::NameSpaceManager()->GetNameSpaceID(aNamespaceURI,
|
|
nsContentUtils::IsChromeDoc(OwnerDoc()));
|
|
|
|
if (nsid == kNameSpaceID_Unknown) {
|
|
// Unknown namespace means no attr...
|
|
return false;
|
|
}
|
|
|
|
nsCOMPtr<nsIAtom> name = NS_AtomizeMainThread(aLocalName);
|
|
return HasAttr(nsid, name);
|
|
}
|
|
|
|
already_AddRefed<nsIHTMLCollection>
|
|
Element::GetElementsByClassName(const nsAString& aClassNames)
|
|
{
|
|
return nsContentUtils::GetElementsByClassName(this, aClassNames);
|
|
}
|
|
|
|
/**
|
|
* Returns the count of descendants (inclusive of aContent) in
|
|
* the uncomposed document that are explicitly set as editable.
|
|
*/
|
|
static uint32_t
|
|
EditableInclusiveDescendantCount(nsIContent* aContent)
|
|
{
|
|
auto htmlElem = nsGenericHTMLElement::FromContent(aContent);
|
|
if (htmlElem) {
|
|
return htmlElem->EditableInclusiveDescendantCount();
|
|
}
|
|
|
|
return aContent->EditableDescendantCount();
|
|
}
|
|
|
|
nsresult
|
|
Element::BindToTree(nsIDocument* aDocument, nsIContent* aParent,
|
|
nsIContent* aBindingParent,
|
|
bool aCompileEventHandlers)
|
|
{
|
|
NS_PRECONDITION(aParent || aDocument, "Must have document if no parent!");
|
|
NS_PRECONDITION((NODE_FROM(aParent, aDocument)->OwnerDoc() == OwnerDoc()),
|
|
"Must have the same owner document");
|
|
NS_PRECONDITION(!aParent || aDocument == aParent->GetUncomposedDoc(),
|
|
"aDocument must be current doc of aParent");
|
|
NS_PRECONDITION(!GetUncomposedDoc(), "Already have a document. Unbind first!");
|
|
// Note that as we recurse into the kids, they'll have a non-null parent. So
|
|
// only assert if our parent is _changing_ while we have a parent.
|
|
NS_PRECONDITION(!GetParent() || aParent == GetParent(),
|
|
"Already have a parent. Unbind first!");
|
|
NS_PRECONDITION(!GetBindingParent() ||
|
|
aBindingParent == GetBindingParent() ||
|
|
(!aBindingParent && aParent &&
|
|
aParent->GetBindingParent() == GetBindingParent()),
|
|
"Already have a binding parent. Unbind first!");
|
|
NS_PRECONDITION(!aParent || !aDocument ||
|
|
!aParent->HasFlag(NODE_FORCE_XBL_BINDINGS),
|
|
"Parent in document but flagged as forcing XBL");
|
|
NS_PRECONDITION(aBindingParent != this,
|
|
"Content must not be its own binding parent");
|
|
NS_PRECONDITION(!IsRootOfNativeAnonymousSubtree() ||
|
|
aBindingParent == aParent,
|
|
"Native anonymous content must have its parent as its "
|
|
"own binding parent");
|
|
NS_PRECONDITION(aBindingParent || !aParent ||
|
|
aBindingParent == aParent->GetBindingParent(),
|
|
"We should be passed the right binding parent");
|
|
|
|
#ifdef MOZ_XUL
|
|
// First set the binding parent
|
|
nsXULElement* xulElem = nsXULElement::FromContent(this);
|
|
if (xulElem) {
|
|
xulElem->SetXULBindingParent(aBindingParent);
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
if (aBindingParent) {
|
|
nsDOMSlots *slots = DOMSlots();
|
|
|
|
slots->mBindingParent = aBindingParent; // Weak, so no addref happens.
|
|
}
|
|
}
|
|
NS_ASSERTION(!aBindingParent || IsRootOfNativeAnonymousSubtree() ||
|
|
!HasFlag(NODE_IS_IN_NATIVE_ANONYMOUS_SUBTREE) ||
|
|
(aParent && aParent->IsInNativeAnonymousSubtree()),
|
|
"Trying to re-bind content from native anonymous subtree to "
|
|
"non-native anonymous parent!");
|
|
if (aParent) {
|
|
if (aParent->IsInNativeAnonymousSubtree()) {
|
|
SetFlags(NODE_IS_IN_NATIVE_ANONYMOUS_SUBTREE);
|
|
}
|
|
if (aParent->HasFlag(NODE_CHROME_ONLY_ACCESS)) {
|
|
SetFlags(NODE_CHROME_ONLY_ACCESS);
|
|
}
|
|
if (aParent->IsInShadowTree()) {
|
|
ClearSubtreeRootPointer();
|
|
SetFlags(NODE_IS_IN_SHADOW_TREE);
|
|
}
|
|
ShadowRoot* parentContainingShadow = aParent->GetContainingShadow();
|
|
if (parentContainingShadow) {
|
|
DOMSlots()->mContainingShadow = parentContainingShadow;
|
|
}
|
|
}
|
|
|
|
bool hadForceXBL = HasFlag(NODE_FORCE_XBL_BINDINGS);
|
|
|
|
bool hadParent = !!GetParentNode();
|
|
|
|
// Now set the parent and set the "Force attach xbl" flag if needed.
|
|
if (aParent) {
|
|
if (!GetParent()) {
|
|
NS_ADDREF(aParent);
|
|
}
|
|
mParent = aParent;
|
|
|
|
if (aParent->HasFlag(NODE_FORCE_XBL_BINDINGS)) {
|
|
SetFlags(NODE_FORCE_XBL_BINDINGS);
|
|
}
|
|
}
|
|
else {
|
|
mParent = aDocument;
|
|
}
|
|
SetParentIsContent(aParent);
|
|
|
|
// XXXbz sXBL/XBL2 issue!
|
|
|
|
// Finally, set the document
|
|
if (aDocument) {
|
|
// Notify XBL- & nsIAnonymousContentCreator-generated
|
|
// anonymous content that the document is changing.
|
|
// XXXbz ordering issues here? Probably not, since ChangeDocumentFor is
|
|
// just pretty broken anyway.... Need to get it working.
|
|
// XXXbz XBL doesn't handle this (asserts), and we don't really want
|
|
// to be doing this during parsing anyway... sort this out.
|
|
// aDocument->BindingManager()->ChangeDocumentFor(this, nullptr,
|
|
// aDocument);
|
|
|
|
// We no longer need to track the subtree pointer (and in fact we'll assert
|
|
// if we do this any later).
|
|
ClearSubtreeRootPointer();
|
|
|
|
// Being added to a document.
|
|
SetIsInDocument();
|
|
|
|
// Unset this flag since we now really are in a document.
|
|
UnsetFlags(NODE_FORCE_XBL_BINDINGS |
|
|
// And clear the lazy frame construction bits.
|
|
NODE_NEEDS_FRAME | NODE_DESCENDANTS_NEED_FRAMES);
|
|
// And the restyle bits
|
|
UnsetRestyleFlagsIfGecko();
|
|
} else if (IsInShadowTree()) {
|
|
// We're not in a document, but we did get inserted into a shadow tree.
|
|
// Since we won't have any restyle data in the document's restyle trackers,
|
|
// don't let us get inserted with restyle bits set incorrectly.
|
|
//
|
|
// Also clear all the other flags that are cleared above when we do get
|
|
// inserted into a document.
|
|
UnsetFlags(NODE_FORCE_XBL_BINDINGS |
|
|
NODE_NEEDS_FRAME | NODE_DESCENDANTS_NEED_FRAMES);
|
|
UnsetRestyleFlagsIfGecko();
|
|
} else {
|
|
// If we're not in the doc and not in a shadow tree,
|
|
// update our subtree pointer.
|
|
SetSubtreeRootPointer(aParent->SubtreeRoot());
|
|
}
|
|
|
|
nsIDocument* composedDoc = GetComposedDoc();
|
|
if (composedDoc) {
|
|
// Attached callback must be enqueued whenever custom element is inserted into a
|
|
// document and this document has a browsing context.
|
|
if (GetCustomElementData() && composedDoc->GetDocShell()) {
|
|
// Enqueue an attached callback for the custom element.
|
|
nsContentUtils::EnqueueLifecycleCallback(
|
|
composedDoc, nsIDocument::eAttached, this);
|
|
}
|
|
}
|
|
|
|
// Propagate scoped style sheet tracking bit.
|
|
if (mParent->IsContent()) {
|
|
nsIContent* parent;
|
|
ShadowRoot* shadowRootParent = ShadowRoot::FromNode(mParent);
|
|
if (shadowRootParent) {
|
|
parent = shadowRootParent->GetHost();
|
|
} else {
|
|
parent = mParent->AsContent();
|
|
}
|
|
|
|
bool inStyleScope = parent->IsElementInStyleScope();
|
|
|
|
SetIsElementInStyleScope(inStyleScope);
|
|
SetIsElementInStyleScopeFlagOnShadowTree(inStyleScope);
|
|
}
|
|
|
|
// This has to be here, rather than in nsGenericHTMLElement::BindToTree,
|
|
// because it has to happen after updating the parent pointer, but before
|
|
// recursively binding the kids.
|
|
if (IsHTMLElement()) {
|
|
SetDirOnBind(this, aParent);
|
|
}
|
|
|
|
uint32_t editableDescendantCount = 0;
|
|
|
|
// If NODE_FORCE_XBL_BINDINGS was set we might have anonymous children
|
|
// that also need to be told that they are moving.
|
|
nsresult rv;
|
|
if (hadForceXBL) {
|
|
nsBindingManager* bmgr = OwnerDoc()->BindingManager();
|
|
|
|
nsXBLBinding* contBinding = bmgr->GetBindingWithContent(this);
|
|
// First check if we have a binding...
|
|
if (contBinding) {
|
|
nsCOMPtr<nsIContent> anonRoot = contBinding->GetAnonymousContent();
|
|
bool allowScripts = contBinding->AllowScripts();
|
|
for (nsCOMPtr<nsIContent> child = anonRoot->GetFirstChild();
|
|
child;
|
|
child = child->GetNextSibling()) {
|
|
rv = child->BindToTree(aDocument, this, this, allowScripts);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
editableDescendantCount += EditableInclusiveDescendantCount(child);
|
|
}
|
|
}
|
|
}
|
|
|
|
UpdateEditableState(false);
|
|
|
|
// Now recurse into our kids
|
|
for (nsIContent* child = GetFirstChild(); child;
|
|
child = child->GetNextSibling()) {
|
|
rv = child->BindToTree(aDocument, this, aBindingParent,
|
|
aCompileEventHandlers);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
editableDescendantCount += EditableInclusiveDescendantCount(child);
|
|
}
|
|
|
|
if (aDocument) {
|
|
// Update our editable descendant count because we don't keep track of it
|
|
// for content that is not in the uncomposed document.
|
|
MOZ_ASSERT(EditableDescendantCount() == 0);
|
|
ChangeEditableDescendantCount(editableDescendantCount);
|
|
|
|
if (!hadParent) {
|
|
uint32_t editableDescendantChange = EditableInclusiveDescendantCount(this);
|
|
if (editableDescendantChange != 0) {
|
|
// If we are binding a subtree root to the document, we need to update
|
|
// the editable descendant count of all the ancestors.
|
|
nsIContent* parent = GetParent();
|
|
while (parent) {
|
|
parent->ChangeEditableDescendantCount(editableDescendantChange);
|
|
parent = parent->GetParent();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
nsNodeUtils::ParentChainChanged(this);
|
|
if (!hadParent && IsRootOfNativeAnonymousSubtree()) {
|
|
nsNodeUtils::NativeAnonymousChildListChange(this, false);
|
|
}
|
|
|
|
if (HasID()) {
|
|
AddToIdTable(DoGetID());
|
|
}
|
|
|
|
if (MayHaveStyle() && !IsXULElement()) {
|
|
// XXXbz if we already have a style attr parsed, this won't do
|
|
// anything... need to fix that.
|
|
// If MayHaveStyle() is true, we must be an nsStyledElement
|
|
static_cast<nsStyledElement*>(this)->ReparseStyleAttribute(false, false);
|
|
}
|
|
|
|
// Call BindToTree on shadow root children.
|
|
ShadowRoot* shadowRoot = GetShadowRoot();
|
|
if (shadowRoot) {
|
|
shadowRoot->SetIsComposedDocParticipant(IsInComposedDoc());
|
|
for (nsIContent* child = shadowRoot->GetFirstChild(); child;
|
|
child = child->GetNextSibling()) {
|
|
rv = child->BindToTree(nullptr, shadowRoot,
|
|
shadowRoot->GetBindingParent(),
|
|
aCompileEventHandlers);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
}
|
|
|
|
// Pseudo-elements implemented by JS must have the NODE_IS_NATIVE_ANONYMOUS
|
|
// flag set on them. For C++-created pseudo-elements, this is done in
|
|
// nsCSSFrameConstructor::GetAnonymousContent, but any JS that creates
|
|
// pseudo-elements would run after that. So we set that flag here,
|
|
// when the element implementing the pseudo is inserted into the document.
|
|
// We maintain the invariant that any NAC-implemented pseudo-element's
|
|
// anonymous ancestors are also flagged as NAC, which the style system relies on.
|
|
if (aDocument) {
|
|
CSSPseudoElementType pseudoType = GetPseudoElementType();
|
|
if (pseudoType != CSSPseudoElementType::NotPseudo &&
|
|
nsCSSPseudoElements::PseudoElementIsJSCreatedNAC(pseudoType)) {
|
|
SetFlags(NODE_IS_NATIVE_ANONYMOUS);
|
|
nsIContent* parent = aParent;
|
|
while (parent && !parent->IsRootOfNativeAnonymousSubtree()) {
|
|
MOZ_ASSERT(parent->IsInNativeAnonymousSubtree());
|
|
parent->SetFlags(NODE_IS_NATIVE_ANONYMOUS);
|
|
parent = parent->GetParent();
|
|
}
|
|
MOZ_ASSERT(parent);
|
|
}
|
|
}
|
|
|
|
// XXXbz script execution during binding can trigger some of these
|
|
// postcondition asserts.... But we do want that, since things will
|
|
// generally be quite broken when that happens.
|
|
NS_POSTCONDITION(aDocument == GetUncomposedDoc(), "Bound to wrong document");
|
|
NS_POSTCONDITION(aParent == GetParent(), "Bound to wrong parent");
|
|
NS_POSTCONDITION(aBindingParent == GetBindingParent(),
|
|
"Bound to wrong binding parent");
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
RemoveFromBindingManagerRunnable::RemoveFromBindingManagerRunnable(nsBindingManager* aManager,
|
|
nsIContent* aContent,
|
|
nsIDocument* aDoc):
|
|
mManager(aManager), mContent(aContent), mDoc(aDoc)
|
|
{}
|
|
|
|
RemoveFromBindingManagerRunnable::~RemoveFromBindingManagerRunnable() {}
|
|
|
|
NS_IMETHODIMP
|
|
RemoveFromBindingManagerRunnable::Run()
|
|
{
|
|
// It may be the case that the element was removed from the
|
|
// DOM, causing this runnable to be created, then inserted back
|
|
// into the document before the this runnable had a chance to
|
|
// tear down the binding. Only tear down the binding if the element
|
|
// is still no longer in the DOM. nsXBLService::LoadBinding tears
|
|
// down the old binding if the element is inserted back into the
|
|
// DOM and loads a different binding.
|
|
if (!mContent->IsInComposedDoc()) {
|
|
mManager->RemovedFromDocumentInternal(mContent, mDoc,
|
|
nsBindingManager::eRunDtor);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
void
|
|
Element::UnbindFromTree(bool aDeep, bool aNullParent)
|
|
{
|
|
NS_PRECONDITION(aDeep || (!GetUncomposedDoc() && !GetBindingParent()),
|
|
"Shallow unbind won't clear document and binding parent on "
|
|
"kids!");
|
|
|
|
RemoveFromIdTable();
|
|
|
|
// Make sure to unbind this node before doing the kids
|
|
nsIDocument* document =
|
|
HasFlag(NODE_FORCE_XBL_BINDINGS) ? OwnerDoc() : GetComposedDoc();
|
|
|
|
if (HasPointerLock()) {
|
|
nsIDocument::UnlockPointer();
|
|
}
|
|
if (mState.HasState(NS_EVENT_STATE_FULL_SCREEN)) {
|
|
// The element being removed is an ancestor of the full-screen element,
|
|
// exit full-screen state.
|
|
nsContentUtils::ReportToConsole(nsIScriptError::warningFlag,
|
|
NS_LITERAL_CSTRING("DOM"), OwnerDoc(),
|
|
nsContentUtils::eDOM_PROPERTIES,
|
|
"RemovedFullscreenElement");
|
|
// Fully exit full-screen.
|
|
nsIDocument::ExitFullscreenInDocTree(OwnerDoc());
|
|
}
|
|
if (aNullParent) {
|
|
if (GetParent() && GetParent()->IsInUncomposedDoc()) {
|
|
// Update the editable descendant count in the ancestors before we
|
|
// lose the reference to the parent.
|
|
int32_t editableDescendantChange = -1 * EditableInclusiveDescendantCount(this);
|
|
if (editableDescendantChange != 0) {
|
|
nsIContent* parent = GetParent();
|
|
while (parent) {
|
|
parent->ChangeEditableDescendantCount(editableDescendantChange);
|
|
parent = parent->GetParent();
|
|
}
|
|
}
|
|
}
|
|
|
|
if (this->IsRootOfNativeAnonymousSubtree()) {
|
|
nsNodeUtils::NativeAnonymousChildListChange(this, true);
|
|
}
|
|
|
|
if (GetParent()) {
|
|
RefPtr<nsINode> p;
|
|
p.swap(mParent);
|
|
} else {
|
|
mParent = nullptr;
|
|
}
|
|
SetParentIsContent(false);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
// If we can get access to the PresContext, then we sanity-check that
|
|
// we're not leaving behind a pointer to ourselves as the PresContext's
|
|
// cached provider of the viewport's scrollbar styles.
|
|
if (document) {
|
|
nsIPresShell* presShell = document->GetShell();
|
|
if (presShell) {
|
|
nsPresContext* presContext = presShell->GetPresContext();
|
|
if (presContext) {
|
|
MOZ_ASSERT(this !=
|
|
presContext->GetViewportScrollbarStylesOverrideNode(),
|
|
"Leaving behind a raw pointer to this node (as having "
|
|
"propagated scrollbar styles) - that's dangerous...");
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// Ensure that CSS transitions don't continue on an element at a
|
|
// different place in the tree (even if reinserted before next
|
|
// animation refresh).
|
|
// We need to delete the properties while we're still in document
|
|
// (if we were in document).
|
|
// FIXME (Bug 522599): Need a test for this.
|
|
if (MayHaveAnimations()) {
|
|
DeleteProperty(nsGkAtoms::transitionsOfBeforeProperty);
|
|
DeleteProperty(nsGkAtoms::transitionsOfAfterProperty);
|
|
DeleteProperty(nsGkAtoms::transitionsProperty);
|
|
DeleteProperty(nsGkAtoms::animationsOfBeforeProperty);
|
|
DeleteProperty(nsGkAtoms::animationsOfAfterProperty);
|
|
DeleteProperty(nsGkAtoms::animationsProperty);
|
|
}
|
|
|
|
ClearInDocument();
|
|
|
|
// Computed styled data isn't useful for detached nodes, and we'll need to
|
|
// recomputed it anyway if we ever insert the nodes back into a document.
|
|
if (IsStyledByServo()) {
|
|
ClearServoData();
|
|
} else {
|
|
MOZ_ASSERT(!HasServoData());
|
|
}
|
|
|
|
// Editable descendant count only counts descendants that
|
|
// are in the uncomposed document.
|
|
ResetEditableDescendantCount();
|
|
|
|
if (aNullParent || !mParent->IsInShadowTree()) {
|
|
UnsetFlags(NODE_IS_IN_SHADOW_TREE);
|
|
|
|
// Begin keeping track of our subtree root.
|
|
SetSubtreeRootPointer(aNullParent ? this : mParent->SubtreeRoot());
|
|
}
|
|
|
|
if (document) {
|
|
// Notify XBL- & nsIAnonymousContentCreator-generated
|
|
// anonymous content that the document is changing.
|
|
// Unlike XBL, bindings for web components shadow DOM
|
|
// do not get uninstalled.
|
|
if (HasFlag(NODE_MAY_BE_IN_BINDING_MNGR) && !GetShadowRoot()) {
|
|
nsContentUtils::AddScriptRunner(
|
|
new RemoveFromBindingManagerRunnable(document->BindingManager(), this,
|
|
document));
|
|
}
|
|
|
|
document->ClearBoxObjectFor(this);
|
|
|
|
// Detached must be enqueued whenever custom element is removed from
|
|
// the document and this document has a browsing context.
|
|
if (GetCustomElementData() && document->GetDocShell()) {
|
|
// Enqueue a detached callback for the custom element.
|
|
nsContentUtils::EnqueueLifecycleCallback(
|
|
document, nsIDocument::eDetached, this);
|
|
}
|
|
}
|
|
|
|
// Unset this since that's what the old code effectively did.
|
|
UnsetFlags(NODE_FORCE_XBL_BINDINGS);
|
|
bool clearBindingParent = true;
|
|
|
|
#ifdef MOZ_XUL
|
|
nsXULElement* xulElem = nsXULElement::FromContent(this);
|
|
if (xulElem) {
|
|
xulElem->SetXULBindingParent(nullptr);
|
|
clearBindingParent = false;
|
|
}
|
|
#endif
|
|
|
|
nsDOMSlots* slots = GetExistingDOMSlots();
|
|
if (slots) {
|
|
if (clearBindingParent) {
|
|
slots->mBindingParent = nullptr;
|
|
}
|
|
if (aNullParent || !mParent->IsInShadowTree()) {
|
|
slots->mContainingShadow = nullptr;
|
|
}
|
|
}
|
|
|
|
// This has to be here, rather than in nsGenericHTMLElement::UnbindFromTree,
|
|
// because it has to happen after unsetting the parent pointer, but before
|
|
// recursively unbinding the kids.
|
|
if (IsHTMLElement()) {
|
|
ResetDir(this);
|
|
}
|
|
|
|
if (aDeep) {
|
|
// Do the kids. Don't call GetChildCount() here since that'll force
|
|
// XUL to generate template children, which there is no need for since
|
|
// all we're going to do is unbind them anyway.
|
|
uint32_t i, n = mAttrsAndChildren.ChildCount();
|
|
|
|
for (i = 0; i < n; ++i) {
|
|
// Note that we pass false for aNullParent here, since we don't want
|
|
// the kids to forget us. We _do_ want them to forget their binding
|
|
// parent, though, since this only walks non-anonymous kids.
|
|
mAttrsAndChildren.ChildAt(i)->UnbindFromTree(true, false);
|
|
}
|
|
}
|
|
|
|
nsNodeUtils::ParentChainChanged(this);
|
|
|
|
// Unbind children of shadow root.
|
|
ShadowRoot* shadowRoot = GetShadowRoot();
|
|
if (shadowRoot) {
|
|
for (nsIContent* child = shadowRoot->GetFirstChild(); child;
|
|
child = child->GetNextSibling()) {
|
|
child->UnbindFromTree(true, false);
|
|
}
|
|
|
|
shadowRoot->SetIsComposedDocParticipant(false);
|
|
}
|
|
}
|
|
|
|
nsICSSDeclaration*
|
|
Element::GetSMILOverrideStyle()
|
|
{
|
|
Element::nsDOMSlots *slots = DOMSlots();
|
|
|
|
if (!slots->mSMILOverrideStyle) {
|
|
slots->mSMILOverrideStyle = new nsDOMCSSAttributeDeclaration(this, true);
|
|
}
|
|
|
|
return slots->mSMILOverrideStyle;
|
|
}
|
|
|
|
DeclarationBlock*
|
|
Element::GetSMILOverrideStyleDeclaration()
|
|
{
|
|
Element::nsDOMSlots *slots = GetExistingDOMSlots();
|
|
return slots ? slots->mSMILOverrideStyleDeclaration.get() : nullptr;
|
|
}
|
|
|
|
nsresult
|
|
Element::SetSMILOverrideStyleDeclaration(DeclarationBlock* aDeclaration,
|
|
bool aNotify)
|
|
{
|
|
Element::nsDOMSlots *slots = DOMSlots();
|
|
|
|
slots->mSMILOverrideStyleDeclaration = aDeclaration;
|
|
|
|
if (aNotify) {
|
|
nsIDocument* doc = GetComposedDoc();
|
|
// Only need to request a restyle if we're in a document. (We might not
|
|
// be in a document, if we're clearing animation effects on a target node
|
|
// that's been detached since the previous animation sample.)
|
|
if (doc) {
|
|
nsCOMPtr<nsIPresShell> shell = doc->GetShell();
|
|
if (shell) {
|
|
shell->RestyleForAnimation(this, eRestyle_StyleAttribute_Animations);
|
|
}
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
bool
|
|
Element::IsLabelable() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
Element::IsInteractiveHTMLContent(bool aIgnoreTabindex) const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
DeclarationBlock*
|
|
Element::GetInlineStyleDeclaration() const
|
|
{
|
|
if (!MayHaveStyle()) {
|
|
return nullptr;
|
|
}
|
|
const nsAttrValue* attrVal = mAttrsAndChildren.GetAttr(nsGkAtoms::style);
|
|
|
|
if (attrVal && attrVal->Type() == nsAttrValue::eCSSDeclaration) {
|
|
return attrVal->GetCSSDeclarationValue();
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
const nsMappedAttributes*
|
|
Element::GetMappedAttributes() const
|
|
{
|
|
return mAttrsAndChildren.GetMapped();
|
|
}
|
|
|
|
nsresult
|
|
Element::SetInlineStyleDeclaration(DeclarationBlock* aDeclaration,
|
|
const nsAString* aSerialized,
|
|
bool aNotify)
|
|
{
|
|
NS_NOTYETIMPLEMENTED("Element::SetInlineStyleDeclaration");
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP_(bool)
|
|
Element::IsAttributeMapped(const nsIAtom* aAttribute) const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
nsChangeHint
|
|
Element::GetAttributeChangeHint(const nsIAtom* aAttribute,
|
|
int32_t aModType) const
|
|
{
|
|
return nsChangeHint(0);
|
|
}
|
|
|
|
bool
|
|
Element::FindAttributeDependence(const nsIAtom* aAttribute,
|
|
const MappedAttributeEntry* const aMaps[],
|
|
uint32_t aMapCount)
|
|
{
|
|
for (uint32_t mapindex = 0; mapindex < aMapCount; ++mapindex) {
|
|
for (const MappedAttributeEntry* map = aMaps[mapindex];
|
|
map->attribute; ++map) {
|
|
if (aAttribute == *map->attribute) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
already_AddRefed<mozilla::dom::NodeInfo>
|
|
Element::GetExistingAttrNameFromQName(const nsAString& aStr) const
|
|
{
|
|
const nsAttrName* name = InternalGetAttrNameFromQName(aStr);
|
|
if (!name) {
|
|
return nullptr;
|
|
}
|
|
|
|
RefPtr<mozilla::dom::NodeInfo> nodeInfo;
|
|
if (name->IsAtom()) {
|
|
nodeInfo = mNodeInfo->NodeInfoManager()->
|
|
GetNodeInfo(name->Atom(), nullptr, kNameSpaceID_None,
|
|
nsIDOMNode::ATTRIBUTE_NODE);
|
|
}
|
|
else {
|
|
nodeInfo = name->NodeInfo();
|
|
}
|
|
|
|
return nodeInfo.forget();
|
|
}
|
|
|
|
// static
|
|
bool
|
|
Element::ShouldBlur(nsIContent *aContent)
|
|
{
|
|
// Determine if the current element is focused, if it is not focused
|
|
// then we should not try to blur
|
|
nsIDocument* document = aContent->GetComposedDoc();
|
|
if (!document)
|
|
return false;
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = document->GetWindow();
|
|
if (!window)
|
|
return false;
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> focusedFrame;
|
|
nsIContent* contentToBlur =
|
|
nsFocusManager::GetFocusedDescendant(window, false, getter_AddRefs(focusedFrame));
|
|
if (contentToBlur == aContent)
|
|
return true;
|
|
|
|
// if focus on this element would get redirected, then check the redirected
|
|
// content as well when blurring.
|
|
return (contentToBlur && nsFocusManager::GetRedirectedFocus(aContent) == contentToBlur);
|
|
}
|
|
|
|
bool
|
|
Element::IsNodeOfType(uint32_t aFlags) const
|
|
{
|
|
return !(aFlags & ~eCONTENT);
|
|
}
|
|
|
|
/* static */
|
|
nsresult
|
|
Element::DispatchEvent(nsPresContext* aPresContext,
|
|
WidgetEvent* aEvent,
|
|
nsIContent* aTarget,
|
|
bool aFullDispatch,
|
|
nsEventStatus* aStatus)
|
|
{
|
|
NS_PRECONDITION(aTarget, "Must have target");
|
|
NS_PRECONDITION(aEvent, "Must have source event");
|
|
NS_PRECONDITION(aStatus, "Null out param?");
|
|
|
|
if (!aPresContext) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIPresShell> shell = aPresContext->GetPresShell();
|
|
if (!shell) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (aFullDispatch) {
|
|
return shell->HandleEventWithTarget(aEvent, nullptr, aTarget, aStatus);
|
|
}
|
|
|
|
return shell->HandleDOMEventWithTarget(aTarget, aEvent, aStatus);
|
|
}
|
|
|
|
/* static */
|
|
nsresult
|
|
Element::DispatchClickEvent(nsPresContext* aPresContext,
|
|
WidgetInputEvent* aSourceEvent,
|
|
nsIContent* aTarget,
|
|
bool aFullDispatch,
|
|
const EventFlags* aExtraEventFlags,
|
|
nsEventStatus* aStatus)
|
|
{
|
|
NS_PRECONDITION(aTarget, "Must have target");
|
|
NS_PRECONDITION(aSourceEvent, "Must have source event");
|
|
NS_PRECONDITION(aStatus, "Null out param?");
|
|
|
|
WidgetMouseEvent event(aSourceEvent->IsTrusted(), eMouseClick,
|
|
aSourceEvent->mWidget, WidgetMouseEvent::eReal);
|
|
event.mRefPoint = aSourceEvent->mRefPoint;
|
|
uint32_t clickCount = 1;
|
|
float pressure = 0;
|
|
uint32_t pointerId = 0; // Use the default value here.
|
|
uint16_t inputSource = 0;
|
|
WidgetMouseEvent* sourceMouseEvent = aSourceEvent->AsMouseEvent();
|
|
if (sourceMouseEvent) {
|
|
clickCount = sourceMouseEvent->mClickCount;
|
|
pressure = sourceMouseEvent->pressure;
|
|
pointerId = sourceMouseEvent->pointerId;
|
|
inputSource = sourceMouseEvent->inputSource;
|
|
} else if (aSourceEvent->mClass == eKeyboardEventClass) {
|
|
event.mFlags.mIsPositionless = true;
|
|
inputSource = nsIDOMMouseEvent::MOZ_SOURCE_KEYBOARD;
|
|
}
|
|
event.pressure = pressure;
|
|
event.mClickCount = clickCount;
|
|
event.pointerId = pointerId;
|
|
event.inputSource = inputSource;
|
|
event.mModifiers = aSourceEvent->mModifiers;
|
|
if (aExtraEventFlags) {
|
|
// Be careful not to overwrite existing flags!
|
|
event.mFlags.Union(*aExtraEventFlags);
|
|
}
|
|
|
|
return DispatchEvent(aPresContext, &event, aTarget, aFullDispatch, aStatus);
|
|
}
|
|
|
|
nsIFrame*
|
|
Element::GetPrimaryFrame(FlushType aType)
|
|
{
|
|
nsIDocument* doc = GetComposedDoc();
|
|
if (!doc) {
|
|
return nullptr;
|
|
}
|
|
|
|
// Cause a flush, so we get up-to-date frame
|
|
// information
|
|
if (aType != FlushType::None) {
|
|
doc->FlushPendingNotifications(aType);
|
|
}
|
|
|
|
return GetPrimaryFrame();
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
nsresult
|
|
Element::LeaveLink(nsPresContext* aPresContext)
|
|
{
|
|
nsILinkHandler *handler = aPresContext->GetLinkHandler();
|
|
if (!handler) {
|
|
return NS_OK;
|
|
}
|
|
|
|
return handler->OnLeaveLink();
|
|
}
|
|
|
|
nsresult
|
|
Element::SetEventHandler(nsIAtom* aEventName,
|
|
const nsAString& aValue,
|
|
bool aDefer)
|
|
{
|
|
nsIDocument *ownerDoc = OwnerDoc();
|
|
if (ownerDoc->IsLoadedAsData()) {
|
|
// Make this a no-op rather than throwing an error to avoid
|
|
// the error causing problems setting the attribute.
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_PRECONDITION(aEventName, "Must have event name!");
|
|
bool defer = true;
|
|
EventListenerManager* manager =
|
|
GetEventListenerManagerForAttr(aEventName, &defer);
|
|
if (!manager) {
|
|
return NS_OK;
|
|
}
|
|
|
|
defer = defer && aDefer; // only defer if everyone agrees...
|
|
manager->SetEventHandler(aEventName, aValue,
|
|
defer, !nsContentUtils::IsChromeDoc(ownerDoc),
|
|
this);
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
const nsAttrName*
|
|
Element::InternalGetAttrNameFromQName(const nsAString& aStr,
|
|
nsAutoString* aNameToUse) const
|
|
{
|
|
MOZ_ASSERT(!aNameToUse || aNameToUse->IsEmpty());
|
|
const nsAttrName* val = nullptr;
|
|
if (IsHTMLElement() && IsInHTMLDocument()) {
|
|
nsAutoString lower;
|
|
nsAutoString& outStr = aNameToUse ? *aNameToUse : lower;
|
|
nsContentUtils::ASCIIToLower(aStr, outStr);
|
|
val = mAttrsAndChildren.GetExistingAttrNameFromQName(outStr);
|
|
if (val) {
|
|
outStr.Truncate();
|
|
}
|
|
} else {
|
|
val = mAttrsAndChildren.GetExistingAttrNameFromQName(aStr);
|
|
if (!val && aNameToUse) {
|
|
*aNameToUse = aStr;
|
|
}
|
|
}
|
|
|
|
return val;
|
|
}
|
|
|
|
bool
|
|
Element::MaybeCheckSameAttrVal(int32_t aNamespaceID,
|
|
nsIAtom* aName,
|
|
nsIAtom* aPrefix,
|
|
const nsAttrValueOrString& aValue,
|
|
bool aNotify,
|
|
nsAttrValue& aOldValue,
|
|
uint8_t* aModType,
|
|
bool* aHasListeners,
|
|
bool* aOldValueSet)
|
|
{
|
|
bool modification = false;
|
|
*aHasListeners = aNotify &&
|
|
nsContentUtils::HasMutationListeners(this,
|
|
NS_EVENT_BITS_MUTATION_ATTRMODIFIED,
|
|
this);
|
|
*aOldValueSet = false;
|
|
|
|
// If we have no listeners and aNotify is false, we are almost certainly
|
|
// coming from the content sink and will almost certainly have no previous
|
|
// value. Even if we do, setting the value is cheap when we have no
|
|
// listeners and don't plan to notify. The check for aNotify here is an
|
|
// optimization, the check for *aHasListeners is a correctness issue.
|
|
if (*aHasListeners || aNotify) {
|
|
BorrowedAttrInfo info(GetAttrInfo(aNamespaceID, aName));
|
|
if (info.mValue) {
|
|
// Check whether the old value is the same as the new one. Note that we
|
|
// only need to actually _get_ the old value if we have listeners or
|
|
// if the element is a custom element (because it may have an
|
|
// attribute changed callback).
|
|
if (*aHasListeners || GetCustomElementData()) {
|
|
// Need to store the old value.
|
|
//
|
|
// If the current attribute value contains a pointer to some other data
|
|
// structure that gets updated in the process of setting the attribute
|
|
// we'll no longer have the old value of the attribute. Therefore, we
|
|
// should serialize the attribute value now to keep a snapshot.
|
|
//
|
|
// We have to serialize the value anyway in order to create the
|
|
// mutation event so there's no cost in doing it now.
|
|
aOldValue.SetToSerialized(*info.mValue);
|
|
*aOldValueSet = true;
|
|
}
|
|
bool valueMatches = aValue.EqualsAsStrings(*info.mValue);
|
|
if (valueMatches && aPrefix == info.mName->GetPrefix()) {
|
|
return true;
|
|
}
|
|
modification = true;
|
|
}
|
|
}
|
|
*aModType = modification ?
|
|
static_cast<uint8_t>(nsIDOMMutationEvent::MODIFICATION) :
|
|
static_cast<uint8_t>(nsIDOMMutationEvent::ADDITION);
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
Element::OnlyNotifySameValueSet(int32_t aNamespaceID, nsIAtom* aName,
|
|
nsIAtom* aPrefix,
|
|
const nsAttrValueOrString& aValue,
|
|
bool aNotify, nsAttrValue& aOldValue,
|
|
uint8_t* aModType, bool* aHasListeners,
|
|
bool* aOldValueSet)
|
|
{
|
|
if (!MaybeCheckSameAttrVal(aNamespaceID, aName, aPrefix, aValue, aNotify,
|
|
aOldValue, aModType, aHasListeners,
|
|
aOldValueSet)) {
|
|
return false;
|
|
}
|
|
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
nsNodeUtils::AttributeSetToCurrentValue(this, aNamespaceID, aName);
|
|
return true;
|
|
}
|
|
|
|
nsresult
|
|
Element::SetAttr(int32_t aNamespaceID, nsIAtom* aName,
|
|
nsIAtom* aPrefix, const nsAString& aValue,
|
|
bool aNotify)
|
|
{
|
|
// Keep this in sync with SetParsedAttr below
|
|
|
|
NS_ENSURE_ARG_POINTER(aName);
|
|
NS_ASSERTION(aNamespaceID != kNameSpaceID_Unknown,
|
|
"Don't call SetAttr with unknown namespace");
|
|
|
|
if (!mAttrsAndChildren.CanFitMoreAttrs()) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
uint8_t modType;
|
|
bool hasListeners;
|
|
// We don't want to spend time preparsing class attributes if the value is not
|
|
// changing, so just init our nsAttrValueOrString with aValue for the
|
|
// OnlyNotifySameValueSet call.
|
|
nsAttrValueOrString value(aValue);
|
|
nsAttrValue oldValue;
|
|
bool oldValueSet;
|
|
|
|
if (OnlyNotifySameValueSet(aNamespaceID, aName, aPrefix, value, aNotify,
|
|
oldValue, &modType, &hasListeners, &oldValueSet)) {
|
|
return OnAttrSetButNotChanged(aNamespaceID, aName, value, aNotify);
|
|
}
|
|
|
|
nsAttrValue attrValue;
|
|
nsAttrValue* preparsedAttrValue;
|
|
if (aNamespaceID == kNameSpaceID_None && aName == nsGkAtoms::_class) {
|
|
attrValue.ParseAtomArray(aValue);
|
|
value.ResetToAttrValue(attrValue);
|
|
preparsedAttrValue = &attrValue;
|
|
} else {
|
|
preparsedAttrValue = nullptr;
|
|
}
|
|
|
|
if (aNotify) {
|
|
nsNodeUtils::AttributeWillChange(this, aNamespaceID, aName, modType,
|
|
preparsedAttrValue);
|
|
}
|
|
|
|
// Hold a script blocker while calling ParseAttribute since that can call
|
|
// out to id-observers
|
|
nsIDocument* document = GetComposedDoc();
|
|
mozAutoDocUpdate updateBatch(document, UPDATE_CONTENT_MODEL, aNotify);
|
|
|
|
nsresult rv = BeforeSetAttr(aNamespaceID, aName, &value, aNotify);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (!preparsedAttrValue &&
|
|
!ParseAttribute(aNamespaceID, aName, aValue, attrValue)) {
|
|
attrValue.SetTo(aValue);
|
|
}
|
|
|
|
PreIdMaybeChange(aNamespaceID, aName, &value);
|
|
|
|
return SetAttrAndNotify(aNamespaceID, aName, aPrefix,
|
|
oldValueSet ? &oldValue : nullptr,
|
|
attrValue, modType, hasListeners, aNotify,
|
|
kCallAfterSetAttr, document, updateBatch);
|
|
}
|
|
|
|
nsresult
|
|
Element::SetParsedAttr(int32_t aNamespaceID, nsIAtom* aName,
|
|
nsIAtom* aPrefix, nsAttrValue& aParsedValue,
|
|
bool aNotify)
|
|
{
|
|
// Keep this in sync with SetAttr above
|
|
|
|
NS_ENSURE_ARG_POINTER(aName);
|
|
NS_ASSERTION(aNamespaceID != kNameSpaceID_Unknown,
|
|
"Don't call SetAttr with unknown namespace");
|
|
|
|
if (!mAttrsAndChildren.CanFitMoreAttrs()) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
|
|
uint8_t modType;
|
|
bool hasListeners;
|
|
nsAttrValueOrString value(aParsedValue);
|
|
nsAttrValue oldValue;
|
|
bool oldValueSet;
|
|
|
|
if (OnlyNotifySameValueSet(aNamespaceID, aName, aPrefix, value, aNotify,
|
|
oldValue, &modType, &hasListeners, &oldValueSet)) {
|
|
return OnAttrSetButNotChanged(aNamespaceID, aName, value, aNotify);
|
|
}
|
|
|
|
if (aNotify) {
|
|
nsNodeUtils::AttributeWillChange(this, aNamespaceID, aName, modType,
|
|
&aParsedValue);
|
|
}
|
|
|
|
nsresult rv = BeforeSetAttr(aNamespaceID, aName, &value, aNotify);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
PreIdMaybeChange(aNamespaceID, aName, &value);
|
|
|
|
nsIDocument* document = GetComposedDoc();
|
|
mozAutoDocUpdate updateBatch(document, UPDATE_CONTENT_MODEL, aNotify);
|
|
return SetAttrAndNotify(aNamespaceID, aName, aPrefix,
|
|
oldValueSet ? &oldValue : nullptr,
|
|
aParsedValue, modType, hasListeners, aNotify,
|
|
kCallAfterSetAttr, document, updateBatch);
|
|
}
|
|
|
|
nsresult
|
|
Element::SetAttrAndNotify(int32_t aNamespaceID,
|
|
nsIAtom* aName,
|
|
nsIAtom* aPrefix,
|
|
const nsAttrValue* aOldValue,
|
|
nsAttrValue& aParsedValue,
|
|
uint8_t aModType,
|
|
bool aFireMutation,
|
|
bool aNotify,
|
|
bool aCallAfterSetAttr,
|
|
nsIDocument* aComposedDocument,
|
|
const mozAutoDocUpdate&)
|
|
{
|
|
nsresult rv;
|
|
nsMutationGuard::DidMutate();
|
|
|
|
// Copy aParsedValue for later use since it will be lost when we call
|
|
// SetAndSwapMappedAttr below
|
|
nsAttrValue valueForAfterSetAttr;
|
|
if (aCallAfterSetAttr) {
|
|
valueForAfterSetAttr.SetTo(aParsedValue);
|
|
}
|
|
|
|
bool hadValidDir = false;
|
|
bool hadDirAuto = false;
|
|
bool oldValueSet;
|
|
|
|
if (aNamespaceID == kNameSpaceID_None) {
|
|
if (aName == nsGkAtoms::dir) {
|
|
hadValidDir = HasValidDir() || IsHTMLElement(nsGkAtoms::bdi);
|
|
hadDirAuto = HasDirAuto(); // already takes bdi into account
|
|
}
|
|
|
|
// XXXbz Perhaps we should push up the attribute mapping function
|
|
// stuff to Element?
|
|
if (!IsAttributeMapped(aName) ||
|
|
!SetAndSwapMappedAttribute(aName, aParsedValue, &oldValueSet, &rv)) {
|
|
rv = mAttrsAndChildren.SetAndSwapAttr(aName, aParsedValue, &oldValueSet);
|
|
}
|
|
}
|
|
else {
|
|
RefPtr<mozilla::dom::NodeInfo> ni;
|
|
ni = mNodeInfo->NodeInfoManager()->GetNodeInfo(aName, aPrefix,
|
|
aNamespaceID,
|
|
nsIDOMNode::ATTRIBUTE_NODE);
|
|
|
|
rv = mAttrsAndChildren.SetAndSwapAttr(ni, aParsedValue, &oldValueSet);
|
|
}
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
PostIdMaybeChange(aNamespaceID, aName, &valueForAfterSetAttr);
|
|
|
|
// If the old value owns its own data, we know it is OK to keep using it.
|
|
// oldValue will be null if there was no previously set value
|
|
const nsAttrValue* oldValue;
|
|
if (aParsedValue.StoresOwnData()) {
|
|
if (oldValueSet) {
|
|
oldValue = &aParsedValue;
|
|
} else {
|
|
oldValue = nullptr;
|
|
}
|
|
} else {
|
|
// No need to conditionally assign null here. If there was no previously
|
|
// set value for the attribute, aOldValue will already be null.
|
|
oldValue = aOldValue;
|
|
}
|
|
|
|
if (aComposedDocument || HasFlag(NODE_FORCE_XBL_BINDINGS)) {
|
|
RefPtr<nsXBLBinding> binding = GetXBLBinding();
|
|
if (binding) {
|
|
binding->AttributeChanged(aName, aNamespaceID, false, aNotify);
|
|
}
|
|
}
|
|
|
|
nsIDocument* ownerDoc = OwnerDoc();
|
|
if (ownerDoc && GetCustomElementData()) {
|
|
nsCOMPtr<nsIAtom> oldValueAtom;
|
|
if (oldValue) {
|
|
oldValueAtom = oldValue->GetAsAtom();
|
|
} else {
|
|
// If there is no old value, get the value of the uninitialized attribute
|
|
// that was swapped with aParsedValue.
|
|
oldValueAtom = aParsedValue.GetAsAtom();
|
|
}
|
|
nsCOMPtr<nsIAtom> newValueAtom = valueForAfterSetAttr.GetAsAtom();
|
|
LifecycleCallbackArgs args = {
|
|
nsDependentAtomString(aName),
|
|
aModType == nsIDOMMutationEvent::ADDITION ?
|
|
NullString() : nsDependentAtomString(oldValueAtom),
|
|
nsDependentAtomString(newValueAtom)
|
|
};
|
|
|
|
nsContentUtils::EnqueueLifecycleCallback(
|
|
ownerDoc, nsIDocument::eAttributeChanged, this, &args);
|
|
}
|
|
|
|
if (aCallAfterSetAttr) {
|
|
rv = AfterSetAttr(aNamespaceID, aName, &valueForAfterSetAttr, oldValue,
|
|
aNotify);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (aNamespaceID == kNameSpaceID_None && aName == nsGkAtoms::dir) {
|
|
OnSetDirAttr(this, &valueForAfterSetAttr,
|
|
hadValidDir, hadDirAuto, aNotify);
|
|
}
|
|
}
|
|
|
|
UpdateState(aNotify);
|
|
|
|
if (aNotify) {
|
|
// Don't pass aOldValue to AttributeChanged since it may not be reliable.
|
|
// Callers only compute aOldValue under certain conditions which may not
|
|
// be triggered by all nsIMutationObservers.
|
|
nsNodeUtils::AttributeChanged(this, aNamespaceID, aName, aModType,
|
|
aParsedValue.StoresOwnData() ? &aParsedValue : nullptr);
|
|
}
|
|
|
|
if (aFireMutation) {
|
|
InternalMutationEvent mutation(true, eLegacyAttrModified);
|
|
|
|
nsAutoString ns;
|
|
nsContentUtils::NameSpaceManager()->GetNameSpaceURI(aNamespaceID, ns);
|
|
Attr* attrNode =
|
|
GetAttributeNodeNSInternal(ns, nsDependentAtomString(aName));
|
|
mutation.mRelatedNode = attrNode;
|
|
|
|
mutation.mAttrName = aName;
|
|
nsAutoString newValue;
|
|
GetAttr(aNamespaceID, aName, newValue);
|
|
if (!newValue.IsEmpty()) {
|
|
mutation.mNewAttrValue = NS_Atomize(newValue);
|
|
}
|
|
if (oldValue && !oldValue->IsEmptyString()) {
|
|
mutation.mPrevAttrValue = oldValue->GetAsAtom();
|
|
}
|
|
mutation.mAttrChange = aModType;
|
|
|
|
mozAutoSubtreeModified subtree(OwnerDoc(), this);
|
|
(new AsyncEventDispatcher(this, mutation))->RunDOMEventWhenSafe();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
bool
|
|
Element::ParseAttribute(int32_t aNamespaceID,
|
|
nsIAtom* aAttribute,
|
|
const nsAString& aValue,
|
|
nsAttrValue& aResult)
|
|
{
|
|
if (aAttribute == nsGkAtoms::lang) {
|
|
aResult.ParseAtom(aValue);
|
|
return true;
|
|
}
|
|
|
|
if (aNamespaceID == kNameSpaceID_None) {
|
|
MOZ_ASSERT(aAttribute != nsGkAtoms::_class,
|
|
"The class attribute should be preparsed and therefore should "
|
|
"never be passed to Element::ParseAttribute");
|
|
if (aAttribute == nsGkAtoms::id) {
|
|
// Store id as an atom. id="" means that the element has no id,
|
|
// not that it has an emptystring as the id.
|
|
if (aValue.IsEmpty()) {
|
|
return false;
|
|
}
|
|
aResult.ParseAtom(aValue);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
Element::SetAndSwapMappedAttribute(nsIAtom* aName,
|
|
nsAttrValue& aValue,
|
|
bool* aValueWasSet,
|
|
nsresult* aRetval)
|
|
{
|
|
*aRetval = NS_OK;
|
|
return false;
|
|
}
|
|
|
|
nsresult
|
|
Element::BeforeSetAttr(int32_t aNamespaceID, nsIAtom* aName,
|
|
const nsAttrValueOrString* aValue, bool aNotify)
|
|
{
|
|
if (aNamespaceID == kNameSpaceID_None) {
|
|
if (aName == nsGkAtoms::_class) {
|
|
if (aValue) {
|
|
// Note: This flag is asymmetrical. It is never unset and isn't exact.
|
|
// If it is ever made to be exact, we probably need to handle this
|
|
// similarly to how ids are handled in PreIdMaybeChange and
|
|
// PostIdMaybeChange.
|
|
SetMayHaveClass();
|
|
}
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
Element::PreIdMaybeChange(int32_t aNamespaceID, nsIAtom* aName,
|
|
const nsAttrValueOrString* aValue)
|
|
{
|
|
if (aNamespaceID != kNameSpaceID_None || aName != nsGkAtoms::id) {
|
|
return;
|
|
}
|
|
RemoveFromIdTable();
|
|
|
|
return;
|
|
}
|
|
|
|
void
|
|
Element::PostIdMaybeChange(int32_t aNamespaceID, nsIAtom* aName,
|
|
const nsAttrValue* aValue)
|
|
{
|
|
if (aNamespaceID != kNameSpaceID_None || aName != nsGkAtoms::id) {
|
|
return;
|
|
}
|
|
|
|
// id="" means that the element has no id, not that it has an empty
|
|
// string as the id.
|
|
if (aValue && !aValue->IsEmptyString()) {
|
|
SetHasID();
|
|
AddToIdTable(aValue->GetAtomValue());
|
|
} else {
|
|
ClearHasID();
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
EventListenerManager*
|
|
Element::GetEventListenerManagerForAttr(nsIAtom* aAttrName,
|
|
bool* aDefer)
|
|
{
|
|
*aDefer = true;
|
|
return GetOrCreateListenerManager();
|
|
}
|
|
|
|
BorrowedAttrInfo
|
|
Element::GetAttrInfo(int32_t aNamespaceID, nsIAtom* aName) const
|
|
{
|
|
NS_ASSERTION(nullptr != aName, "must have attribute name");
|
|
NS_ASSERTION(aNamespaceID != kNameSpaceID_Unknown,
|
|
"must have a real namespace ID!");
|
|
|
|
int32_t index = mAttrsAndChildren.IndexOfAttr(aName, aNamespaceID);
|
|
if (index < 0) {
|
|
return BorrowedAttrInfo(nullptr, nullptr);
|
|
}
|
|
|
|
return mAttrsAndChildren.AttrInfoAt(index);
|
|
}
|
|
|
|
BorrowedAttrInfo
|
|
Element::GetAttrInfoAt(uint32_t aIndex) const
|
|
{
|
|
if (aIndex >= mAttrsAndChildren.AttrCount()) {
|
|
return BorrowedAttrInfo(nullptr, nullptr);
|
|
}
|
|
|
|
return mAttrsAndChildren.AttrInfoAt(aIndex);
|
|
}
|
|
|
|
bool
|
|
Element::GetAttr(int32_t aNameSpaceID, nsIAtom* aName,
|
|
nsAString& aResult) const
|
|
{
|
|
DOMString str;
|
|
bool haveAttr = GetAttr(aNameSpaceID, aName, str);
|
|
str.ToString(aResult);
|
|
return haveAttr;
|
|
}
|
|
|
|
int32_t
|
|
Element::FindAttrValueIn(int32_t aNameSpaceID,
|
|
nsIAtom* aName,
|
|
AttrValuesArray* aValues,
|
|
nsCaseTreatment aCaseSensitive) const
|
|
{
|
|
NS_ASSERTION(aName, "Must have attr name");
|
|
NS_ASSERTION(aNameSpaceID != kNameSpaceID_Unknown, "Must have namespace");
|
|
NS_ASSERTION(aValues, "Null value array");
|
|
|
|
const nsAttrValue* val = mAttrsAndChildren.GetAttr(aName, aNameSpaceID);
|
|
if (val) {
|
|
for (int32_t i = 0; aValues[i]; ++i) {
|
|
if (val->Equals(*aValues[i], aCaseSensitive)) {
|
|
return i;
|
|
}
|
|
}
|
|
return ATTR_VALUE_NO_MATCH;
|
|
}
|
|
return ATTR_MISSING;
|
|
}
|
|
|
|
nsresult
|
|
Element::UnsetAttr(int32_t aNameSpaceID, nsIAtom* aName,
|
|
bool aNotify)
|
|
{
|
|
NS_ASSERTION(nullptr != aName, "must have attribute name");
|
|
|
|
int32_t index = mAttrsAndChildren.IndexOfAttr(aName, aNameSpaceID);
|
|
if (index < 0) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIDocument *document = GetComposedDoc();
|
|
mozAutoDocUpdate updateBatch(document, UPDATE_CONTENT_MODEL, aNotify);
|
|
|
|
if (aNotify) {
|
|
nsNodeUtils::AttributeWillChange(this, aNameSpaceID, aName,
|
|
nsIDOMMutationEvent::REMOVAL,
|
|
nullptr);
|
|
}
|
|
|
|
nsresult rv = BeforeSetAttr(aNameSpaceID, aName, nullptr, aNotify);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
bool hasMutationListeners = aNotify &&
|
|
nsContentUtils::HasMutationListeners(this,
|
|
NS_EVENT_BITS_MUTATION_ATTRMODIFIED,
|
|
this);
|
|
|
|
PreIdMaybeChange(aNameSpaceID, aName, nullptr);
|
|
|
|
// Grab the attr node if needed before we remove it from the attr map
|
|
RefPtr<Attr> attrNode;
|
|
if (hasMutationListeners) {
|
|
nsAutoString ns;
|
|
nsContentUtils::NameSpaceManager()->GetNameSpaceURI(aNameSpaceID, ns);
|
|
attrNode = GetAttributeNodeNSInternal(ns, nsDependentAtomString(aName));
|
|
}
|
|
|
|
// Clear binding to nsIDOMMozNamedAttrMap
|
|
nsDOMSlots *slots = GetExistingDOMSlots();
|
|
if (slots && slots->mAttributeMap) {
|
|
slots->mAttributeMap->DropAttribute(aNameSpaceID, aName);
|
|
}
|
|
|
|
// The id-handling code, and in the future possibly other code, need to
|
|
// react to unexpected attribute changes.
|
|
nsMutationGuard::DidMutate();
|
|
|
|
bool hadValidDir = false;
|
|
bool hadDirAuto = false;
|
|
|
|
if (aNameSpaceID == kNameSpaceID_None && aName == nsGkAtoms::dir) {
|
|
hadValidDir = HasValidDir() || IsHTMLElement(nsGkAtoms::bdi);
|
|
hadDirAuto = HasDirAuto(); // already takes bdi into account
|
|
}
|
|
|
|
nsAttrValue oldValue;
|
|
rv = mAttrsAndChildren.RemoveAttrAt(index, oldValue);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
PostIdMaybeChange(aNameSpaceID, aName, nullptr);
|
|
|
|
if (document || HasFlag(NODE_FORCE_XBL_BINDINGS)) {
|
|
RefPtr<nsXBLBinding> binding = GetXBLBinding();
|
|
if (binding) {
|
|
binding->AttributeChanged(aName, aNameSpaceID, true, aNotify);
|
|
}
|
|
}
|
|
|
|
nsIDocument* ownerDoc = OwnerDoc();
|
|
if (ownerDoc && GetCustomElementData()) {
|
|
nsCOMPtr<nsIAtom> oldValueAtom = oldValue.GetAsAtom();
|
|
LifecycleCallbackArgs args = {
|
|
nsDependentAtomString(aName),
|
|
nsDependentAtomString(oldValueAtom),
|
|
NullString()
|
|
};
|
|
|
|
nsContentUtils::EnqueueLifecycleCallback(
|
|
ownerDoc, nsIDocument::eAttributeChanged, this, &args);
|
|
}
|
|
|
|
rv = AfterSetAttr(aNameSpaceID, aName, nullptr, &oldValue, aNotify);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
UpdateState(aNotify);
|
|
|
|
if (aNotify) {
|
|
// We can always pass oldValue here since there is no new value which could
|
|
// have corrupted it.
|
|
nsNodeUtils::AttributeChanged(this, aNameSpaceID, aName,
|
|
nsIDOMMutationEvent::REMOVAL, &oldValue);
|
|
}
|
|
|
|
if (aNameSpaceID == kNameSpaceID_None && aName == nsGkAtoms::dir) {
|
|
OnSetDirAttr(this, nullptr, hadValidDir, hadDirAuto, aNotify);
|
|
}
|
|
|
|
if (hasMutationListeners) {
|
|
InternalMutationEvent mutation(true, eLegacyAttrModified);
|
|
|
|
mutation.mRelatedNode = attrNode;
|
|
mutation.mAttrName = aName;
|
|
|
|
nsAutoString value;
|
|
oldValue.ToString(value);
|
|
if (!value.IsEmpty())
|
|
mutation.mPrevAttrValue = NS_Atomize(value);
|
|
mutation.mAttrChange = nsIDOMMutationEvent::REMOVAL;
|
|
|
|
mozAutoSubtreeModified subtree(OwnerDoc(), this);
|
|
(new AsyncEventDispatcher(this, mutation))->RunDOMEventWhenSafe();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
const nsAttrName*
|
|
Element::GetAttrNameAt(uint32_t aIndex) const
|
|
{
|
|
return mAttrsAndChildren.GetSafeAttrNameAt(aIndex);
|
|
}
|
|
|
|
uint32_t
|
|
Element::GetAttrCount() const
|
|
{
|
|
return mAttrsAndChildren.AttrCount();
|
|
}
|
|
|
|
void
|
|
Element::DescribeAttribute(uint32_t index, nsAString& aOutDescription) const
|
|
{
|
|
// name
|
|
mAttrsAndChildren.AttrNameAt(index)->GetQualifiedName(aOutDescription);
|
|
|
|
// value
|
|
aOutDescription.AppendLiteral("=\"");
|
|
nsAutoString value;
|
|
mAttrsAndChildren.AttrAt(index)->ToString(value);
|
|
for (uint32_t i = value.Length(); i > 0; --i) {
|
|
if (value[i - 1] == char16_t('"'))
|
|
value.Insert(char16_t('\\'), i - 1);
|
|
}
|
|
aOutDescription.Append(value);
|
|
aOutDescription.Append('"');
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
void
|
|
Element::ListAttributes(FILE* out) const
|
|
{
|
|
uint32_t index, count = mAttrsAndChildren.AttrCount();
|
|
for (index = 0; index < count; index++) {
|
|
nsAutoString attributeDescription;
|
|
DescribeAttribute(index, attributeDescription);
|
|
|
|
fputs(" ", out);
|
|
fputs(NS_LossyConvertUTF16toASCII(attributeDescription).get(), out);
|
|
}
|
|
}
|
|
|
|
void
|
|
Element::List(FILE* out, int32_t aIndent,
|
|
const nsCString& aPrefix) const
|
|
{
|
|
int32_t indent;
|
|
for (indent = aIndent; --indent >= 0; ) fputs(" ", out);
|
|
|
|
fputs(aPrefix.get(), out);
|
|
|
|
fputs(NS_LossyConvertUTF16toASCII(mNodeInfo->QualifiedName()).get(), out);
|
|
|
|
fprintf(out, "@%p", (void *)this);
|
|
|
|
ListAttributes(out);
|
|
|
|
fprintf(out, " state=[%llx]",
|
|
static_cast<unsigned long long>(State().GetInternalValue()));
|
|
fprintf(out, " flags=[%08x]", static_cast<unsigned int>(GetFlags()));
|
|
if (IsCommonAncestorForRangeInSelection()) {
|
|
nsRange::RangeHashTable* ranges =
|
|
static_cast<nsRange::RangeHashTable*>(GetProperty(nsGkAtoms::range));
|
|
fprintf(out, " ranges:%d", ranges ? ranges->Count() : 0);
|
|
}
|
|
fprintf(out, " primaryframe=%p", static_cast<void*>(GetPrimaryFrame()));
|
|
fprintf(out, " refcount=%" PRIuPTR "<", mRefCnt.get());
|
|
|
|
nsIContent* child = GetFirstChild();
|
|
if (child) {
|
|
fputs("\n", out);
|
|
|
|
for (; child; child = child->GetNextSibling()) {
|
|
child->List(out, aIndent + 1);
|
|
}
|
|
|
|
for (indent = aIndent; --indent >= 0; ) fputs(" ", out);
|
|
}
|
|
|
|
fputs(">\n", out);
|
|
|
|
Element* nonConstThis = const_cast<Element*>(this);
|
|
|
|
// XXX sXBL/XBL2 issue! Owner or current document?
|
|
nsIDocument *document = OwnerDoc();
|
|
|
|
// Note: not listing nsIAnonymousContentCreator-created content...
|
|
|
|
nsBindingManager* bindingManager = document->BindingManager();
|
|
nsCOMPtr<nsIDOMNodeList> anonymousChildren;
|
|
bindingManager->GetAnonymousNodesFor(nonConstThis,
|
|
getter_AddRefs(anonymousChildren));
|
|
|
|
if (anonymousChildren) {
|
|
uint32_t length = 0;
|
|
anonymousChildren->GetLength(&length);
|
|
|
|
for (indent = aIndent; --indent >= 0; ) fputs(" ", out);
|
|
fputs("anonymous-children<\n", out);
|
|
|
|
for (uint32_t i = 0; i < length; ++i) {
|
|
nsCOMPtr<nsIDOMNode> node;
|
|
anonymousChildren->Item(i, getter_AddRefs(node));
|
|
nsCOMPtr<nsIContent> child = do_QueryInterface(node);
|
|
child->List(out, aIndent + 1);
|
|
}
|
|
|
|
for (indent = aIndent; --indent >= 0; ) fputs(" ", out);
|
|
fputs(">\n", out);
|
|
|
|
bool outHeader = false;
|
|
ExplicitChildIterator iter(nonConstThis);
|
|
for (nsIContent* child = iter.GetNextChild(); child; child = iter.GetNextChild()) {
|
|
if (!outHeader) {
|
|
outHeader = true;
|
|
|
|
for (indent = aIndent; --indent >= 0; ) fputs(" ", out);
|
|
fputs("content-list<\n", out);
|
|
}
|
|
|
|
child->List(out, aIndent + 1);
|
|
}
|
|
|
|
if (outHeader) {
|
|
for (indent = aIndent; --indent >= 0; ) fputs(" ", out);
|
|
fputs(">\n", out);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
Element::DumpContent(FILE* out, int32_t aIndent,
|
|
bool aDumpAll) const
|
|
{
|
|
int32_t indent;
|
|
for (indent = aIndent; --indent >= 0; ) fputs(" ", out);
|
|
|
|
const nsString& buf = mNodeInfo->QualifiedName();
|
|
fputs("<", out);
|
|
fputs(NS_LossyConvertUTF16toASCII(buf).get(), out);
|
|
|
|
if(aDumpAll) ListAttributes(out);
|
|
|
|
fputs(">", out);
|
|
|
|
if(aIndent) fputs("\n", out);
|
|
|
|
for (nsIContent* child = GetFirstChild();
|
|
child;
|
|
child = child->GetNextSibling()) {
|
|
int32_t indent = aIndent ? aIndent + 1 : 0;
|
|
child->DumpContent(out, indent, aDumpAll);
|
|
}
|
|
for (indent = aIndent; --indent >= 0; ) fputs(" ", out);
|
|
fputs("</", out);
|
|
fputs(NS_LossyConvertUTF16toASCII(buf).get(), out);
|
|
fputs(">", out);
|
|
|
|
if(aIndent) fputs("\n", out);
|
|
}
|
|
#endif
|
|
|
|
void
|
|
Element::Describe(nsAString& aOutDescription) const
|
|
{
|
|
aOutDescription.Append(mNodeInfo->QualifiedName());
|
|
aOutDescription.AppendPrintf("@%p", (void *)this);
|
|
|
|
uint32_t index, count = mAttrsAndChildren.AttrCount();
|
|
for (index = 0; index < count; index++) {
|
|
aOutDescription.Append(' ');
|
|
nsAutoString attributeDescription;
|
|
DescribeAttribute(index, attributeDescription);
|
|
aOutDescription.Append(attributeDescription);
|
|
}
|
|
}
|
|
|
|
bool
|
|
Element::CheckHandleEventForLinksPrecondition(EventChainVisitor& aVisitor,
|
|
nsIURI** aURI) const
|
|
{
|
|
if (aVisitor.mEventStatus == nsEventStatus_eConsumeNoDefault ||
|
|
(!aVisitor.mEvent->IsTrusted() &&
|
|
(aVisitor.mEvent->mMessage != eMouseClick) &&
|
|
(aVisitor.mEvent->mMessage != eKeyPress) &&
|
|
(aVisitor.mEvent->mMessage != eLegacyDOMActivate)) ||
|
|
!aVisitor.mPresContext ||
|
|
aVisitor.mEvent->mFlags.mMultipleActionsPrevented) {
|
|
return false;
|
|
}
|
|
|
|
// Make sure we actually are a link
|
|
return IsLink(aURI);
|
|
}
|
|
|
|
nsresult
|
|
Element::GetEventTargetParentForLinks(EventChainPreVisitor& aVisitor)
|
|
{
|
|
// Optimisation: return early if this event doesn't interest us.
|
|
// IMPORTANT: this switch and the switch below it must be kept in sync!
|
|
switch (aVisitor.mEvent->mMessage) {
|
|
case eMouseOver:
|
|
case eFocus:
|
|
case eMouseOut:
|
|
case eBlur:
|
|
break;
|
|
default:
|
|
return NS_OK;
|
|
}
|
|
|
|
// Make sure we meet the preconditions before continuing
|
|
nsCOMPtr<nsIURI> absURI;
|
|
if (!CheckHandleEventForLinksPrecondition(aVisitor, getter_AddRefs(absURI))) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult rv = NS_OK;
|
|
|
|
// We do the status bar updates in GetEventTargetParent so that the status bar
|
|
// gets updated even if the event is consumed before we have a chance to set
|
|
// it.
|
|
switch (aVisitor.mEvent->mMessage) {
|
|
// Set the status bar similarly for mouseover and focus
|
|
case eMouseOver:
|
|
aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
|
|
MOZ_FALLTHROUGH;
|
|
case eFocus: {
|
|
InternalFocusEvent* focusEvent = aVisitor.mEvent->AsFocusEvent();
|
|
if (!focusEvent || !focusEvent->mIsRefocus) {
|
|
nsAutoString target;
|
|
GetLinkTarget(target);
|
|
nsContentUtils::TriggerLink(this, aVisitor.mPresContext, absURI, target,
|
|
false, true, true);
|
|
// Make sure any ancestor links don't also TriggerLink
|
|
aVisitor.mEvent->mFlags.mMultipleActionsPrevented = true;
|
|
}
|
|
break;
|
|
}
|
|
case eMouseOut:
|
|
aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
|
|
MOZ_FALLTHROUGH;
|
|
case eBlur:
|
|
rv = LeaveLink(aVisitor.mPresContext);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
aVisitor.mEvent->mFlags.mMultipleActionsPrevented = true;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
// switch not in sync with the optimization switch earlier in this function
|
|
NS_NOTREACHED("switch statements not in sync");
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsresult
|
|
Element::PostHandleEventForLinks(EventChainPostVisitor& aVisitor)
|
|
{
|
|
// Optimisation: return early if this event doesn't interest us.
|
|
// IMPORTANT: this switch and the switch below it must be kept in sync!
|
|
switch (aVisitor.mEvent->mMessage) {
|
|
case eMouseDown:
|
|
case eMouseClick:
|
|
case eLegacyDOMActivate:
|
|
case eKeyPress:
|
|
break;
|
|
default:
|
|
return NS_OK;
|
|
}
|
|
|
|
// Make sure we meet the preconditions before continuing
|
|
nsCOMPtr<nsIURI> absURI;
|
|
if (!CheckHandleEventForLinksPrecondition(aVisitor, getter_AddRefs(absURI))) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult rv = NS_OK;
|
|
|
|
switch (aVisitor.mEvent->mMessage) {
|
|
case eMouseDown:
|
|
{
|
|
if (aVisitor.mEvent->AsMouseEvent()->button ==
|
|
WidgetMouseEvent::eLeftButton) {
|
|
// don't make the link grab the focus if there is no link handler
|
|
nsILinkHandler *handler = aVisitor.mPresContext->GetLinkHandler();
|
|
nsIDocument *document = GetComposedDoc();
|
|
if (handler && document) {
|
|
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
if (fm) {
|
|
aVisitor.mEvent->mFlags.mMultipleActionsPrevented = true;
|
|
nsCOMPtr<nsIDOMElement> elem = do_QueryInterface(this);
|
|
fm->SetFocus(elem, nsIFocusManager::FLAG_BYMOUSE |
|
|
nsIFocusManager::FLAG_NOSCROLL);
|
|
}
|
|
|
|
EventStateManager::SetActiveManager(
|
|
aVisitor.mPresContext->EventStateManager(), this);
|
|
|
|
// OK, we're pretty sure we're going to load, so warm up a speculative
|
|
// connection to be sure we have one ready when we open the channel.
|
|
nsCOMPtr<nsISpeculativeConnect> sc =
|
|
do_QueryInterface(nsContentUtils::GetIOService());
|
|
nsCOMPtr<nsIInterfaceRequestor> ir = do_QueryInterface(handler);
|
|
sc->SpeculativeConnect2(absURI, NodePrincipal(), ir);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case eMouseClick: {
|
|
WidgetMouseEvent* mouseEvent = aVisitor.mEvent->AsMouseEvent();
|
|
if (mouseEvent->IsLeftClickEvent()) {
|
|
if (mouseEvent->IsControl() || mouseEvent->IsMeta() ||
|
|
mouseEvent->IsAlt() ||mouseEvent->IsShift()) {
|
|
break;
|
|
}
|
|
|
|
// The default action is simply to dispatch DOMActivate
|
|
nsCOMPtr<nsIPresShell> shell = aVisitor.mPresContext->GetPresShell();
|
|
if (shell) {
|
|
// single-click
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
// DOMActive event should be trusted since the activation is actually
|
|
// occurred even if the cause is an untrusted click event.
|
|
InternalUIEvent actEvent(true, eLegacyDOMActivate, mouseEvent);
|
|
actEvent.mDetail = 1;
|
|
|
|
rv = shell->HandleDOMEventWithTarget(this, &actEvent, &status);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case eLegacyDOMActivate:
|
|
{
|
|
if (aVisitor.mEvent->mOriginalTarget == this) {
|
|
nsAutoString target;
|
|
GetLinkTarget(target);
|
|
const InternalUIEvent* activeEvent = aVisitor.mEvent->AsUIEvent();
|
|
MOZ_ASSERT(activeEvent);
|
|
nsContentUtils::TriggerLink(this, aVisitor.mPresContext, absURI, target,
|
|
true, true, activeEvent->IsTrustable());
|
|
aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case eKeyPress:
|
|
{
|
|
WidgetKeyboardEvent* keyEvent = aVisitor.mEvent->AsKeyboardEvent();
|
|
if (keyEvent && keyEvent->mKeyCode == NS_VK_RETURN) {
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
rv = DispatchClickEvent(aVisitor.mPresContext, keyEvent, this,
|
|
false, nullptr, &status);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
// switch not in sync with the optimization switch earlier in this function
|
|
NS_NOTREACHED("switch statements not in sync");
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
void
|
|
Element::GetLinkTarget(nsAString& aTarget)
|
|
{
|
|
aTarget.Truncate();
|
|
}
|
|
|
|
static void
|
|
nsDOMTokenListPropertyDestructor(void *aObject, nsIAtom *aProperty,
|
|
void *aPropertyValue, void *aData)
|
|
{
|
|
nsDOMTokenList* list =
|
|
static_cast<nsDOMTokenList*>(aPropertyValue);
|
|
NS_RELEASE(list);
|
|
}
|
|
|
|
static nsIAtom** sPropertiesToTraverseAndUnlink[] =
|
|
{
|
|
&nsGkAtoms::sandbox,
|
|
&nsGkAtoms::sizes,
|
|
nullptr
|
|
};
|
|
|
|
// static
|
|
nsIAtom***
|
|
Element::HTMLSVGPropertiesToTraverseAndUnlink()
|
|
{
|
|
return sPropertiesToTraverseAndUnlink;
|
|
}
|
|
|
|
nsDOMTokenList*
|
|
Element::GetTokenList(nsIAtom* aAtom,
|
|
const DOMTokenListSupportedTokenArray aSupportedTokens)
|
|
{
|
|
#ifdef DEBUG
|
|
nsIAtom*** props =
|
|
HTMLSVGPropertiesToTraverseAndUnlink();
|
|
bool found = false;
|
|
for (uint32_t i = 0; props[i]; ++i) {
|
|
if (*props[i] == aAtom) {
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
MOZ_ASSERT(found, "Trying to use an unknown tokenlist!");
|
|
#endif
|
|
|
|
nsDOMTokenList* list = nullptr;
|
|
if (HasProperties()) {
|
|
list = static_cast<nsDOMTokenList*>(GetProperty(aAtom));
|
|
}
|
|
if (!list) {
|
|
list = new nsDOMTokenList(this, aAtom, aSupportedTokens);
|
|
NS_ADDREF(list);
|
|
SetProperty(aAtom, list, nsDOMTokenListPropertyDestructor);
|
|
}
|
|
return list;
|
|
}
|
|
|
|
Element*
|
|
Element::Closest(const nsAString& aSelector, ErrorResult& aResult)
|
|
{
|
|
nsCSSSelectorList* selectorList = ParseSelectorList(aSelector, aResult);
|
|
if (!selectorList) {
|
|
// Either we failed (and aResult already has the exception), or this
|
|
// is a pseudo-element-only selector that matches nothing.
|
|
return nullptr;
|
|
}
|
|
TreeMatchContext matchingContext(false,
|
|
nsRuleWalker::eRelevantLinkUnvisited,
|
|
OwnerDoc(),
|
|
TreeMatchContext::eNeverMatchVisited);
|
|
matchingContext.SetHasSpecifiedScope();
|
|
matchingContext.AddScopeElement(this);
|
|
for (nsINode* node = this; node; node = node->GetParentNode()) {
|
|
if (node->IsElement() &&
|
|
nsCSSRuleProcessor::SelectorListMatches(node->AsElement(),
|
|
matchingContext,
|
|
selectorList)) {
|
|
return node->AsElement();
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
bool
|
|
Element::Matches(const nsAString& aSelector, ErrorResult& aError)
|
|
{
|
|
nsCSSSelectorList* selectorList = ParseSelectorList(aSelector, aError);
|
|
if (!selectorList) {
|
|
// Either we failed (and aError already has the exception), or this
|
|
// is a pseudo-element-only selector that matches nothing.
|
|
return false;
|
|
}
|
|
|
|
TreeMatchContext matchingContext(false,
|
|
nsRuleWalker::eRelevantLinkUnvisited,
|
|
OwnerDoc(),
|
|
TreeMatchContext::eNeverMatchVisited);
|
|
matchingContext.SetHasSpecifiedScope();
|
|
matchingContext.AddScopeElement(this);
|
|
return nsCSSRuleProcessor::SelectorListMatches(this, matchingContext,
|
|
selectorList);
|
|
}
|
|
|
|
static const nsAttrValue::EnumTable kCORSAttributeTable[] = {
|
|
// Order matters here
|
|
// See ParseCORSValue
|
|
{ "anonymous", CORS_ANONYMOUS },
|
|
{ "use-credentials", CORS_USE_CREDENTIALS },
|
|
{ nullptr, 0 }
|
|
};
|
|
|
|
/* static */ void
|
|
Element::ParseCORSValue(const nsAString& aValue,
|
|
nsAttrValue& aResult)
|
|
{
|
|
DebugOnly<bool> success =
|
|
aResult.ParseEnumValue(aValue, kCORSAttributeTable, false,
|
|
// default value is anonymous if aValue is
|
|
// not a value we understand
|
|
&kCORSAttributeTable[0]);
|
|
MOZ_ASSERT(success);
|
|
}
|
|
|
|
/* static */ CORSMode
|
|
Element::StringToCORSMode(const nsAString& aValue)
|
|
{
|
|
if (aValue.IsVoid()) {
|
|
return CORS_NONE;
|
|
}
|
|
|
|
nsAttrValue val;
|
|
Element::ParseCORSValue(aValue, val);
|
|
return CORSMode(val.GetEnumValue());
|
|
}
|
|
|
|
/* static */ CORSMode
|
|
Element::AttrValueToCORSMode(const nsAttrValue* aValue)
|
|
{
|
|
if (!aValue) {
|
|
return CORS_NONE;
|
|
}
|
|
|
|
return CORSMode(aValue->GetEnumValue());
|
|
}
|
|
|
|
static const char*
|
|
GetFullScreenError(CallerType aCallerType)
|
|
{
|
|
if (!nsContentUtils::IsRequestFullScreenAllowed(aCallerType)) {
|
|
return "FullscreenDeniedNotInputDriven";
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
void
|
|
Element::RequestFullscreen(CallerType aCallerType, ErrorResult& aError)
|
|
{
|
|
// Only grant full-screen requests if this is called from inside a trusted
|
|
// event handler (i.e. inside an event handler for a user initiated event).
|
|
// This stops the full-screen from being abused similar to the popups of old,
|
|
// and it also makes it harder for bad guys' script to go full-screen and
|
|
// spoof the browser chrome/window and phish logins etc.
|
|
// Note that requests for fullscreen inside a web app's origin are exempt
|
|
// from this restriction.
|
|
if (const char* error = GetFullScreenError(aCallerType)) {
|
|
OwnerDoc()->DispatchFullscreenError(error);
|
|
return;
|
|
}
|
|
|
|
auto request = MakeUnique<FullscreenRequest>(this);
|
|
request->mIsCallerChrome = (aCallerType == CallerType::System);
|
|
|
|
OwnerDoc()->AsyncRequestFullScreen(Move(request));
|
|
}
|
|
|
|
void
|
|
Element::RequestPointerLock(CallerType aCallerType)
|
|
{
|
|
OwnerDoc()->RequestPointerLock(this, aCallerType);
|
|
}
|
|
|
|
void
|
|
Element::GetGridFragments(nsTArray<RefPtr<Grid>>& aResult)
|
|
{
|
|
nsGridContainerFrame* frame =
|
|
nsGridContainerFrame::GetGridFrameWithComputedInfo(GetPrimaryFrame());
|
|
|
|
// If we get a nsGridContainerFrame from the prior call,
|
|
// all the next-in-flow frames will also be nsGridContainerFrames.
|
|
while (frame) {
|
|
aResult.AppendElement(
|
|
new Grid(this, frame)
|
|
);
|
|
frame = static_cast<nsGridContainerFrame*>(frame->GetNextInFlow());
|
|
}
|
|
}
|
|
|
|
already_AddRefed<DOMMatrixReadOnly>
|
|
Element::GetTransformToAncestor(Element& aAncestor)
|
|
{
|
|
nsIFrame* primaryFrame = GetPrimaryFrame();
|
|
nsIFrame* ancestorFrame = aAncestor.GetPrimaryFrame();
|
|
|
|
Matrix4x4 transform;
|
|
if (primaryFrame) {
|
|
// If aAncestor is not actually an ancestor of this (including nullptr),
|
|
// then the call to GetTransformToAncestor will return the transform
|
|
// all the way up through the parent chain.
|
|
transform = nsLayoutUtils::GetTransformToAncestor(primaryFrame,
|
|
ancestorFrame, true);
|
|
}
|
|
|
|
DOMMatrixReadOnly* matrix = new DOMMatrix(this, transform);
|
|
RefPtr<DOMMatrixReadOnly> result(matrix);
|
|
return result.forget();
|
|
}
|
|
|
|
already_AddRefed<DOMMatrixReadOnly>
|
|
Element::GetTransformToParent()
|
|
{
|
|
nsIFrame* primaryFrame = GetPrimaryFrame();
|
|
|
|
Matrix4x4 transform;
|
|
if (primaryFrame) {
|
|
nsIFrame* parentFrame = primaryFrame->GetParent();
|
|
transform = nsLayoutUtils::GetTransformToAncestor(primaryFrame,
|
|
parentFrame, true);
|
|
}
|
|
|
|
DOMMatrixReadOnly* matrix = new DOMMatrix(this, transform);
|
|
RefPtr<DOMMatrixReadOnly> result(matrix);
|
|
return result.forget();
|
|
}
|
|
|
|
already_AddRefed<DOMMatrixReadOnly>
|
|
Element::GetTransformToViewport()
|
|
{
|
|
nsIFrame* primaryFrame = GetPrimaryFrame();
|
|
Matrix4x4 transform;
|
|
if (primaryFrame) {
|
|
transform = nsLayoutUtils::GetTransformToAncestor(primaryFrame,
|
|
nsLayoutUtils::GetDisplayRootFrame(primaryFrame), true);
|
|
}
|
|
|
|
DOMMatrixReadOnly* matrix = new DOMMatrix(this, transform);
|
|
RefPtr<DOMMatrixReadOnly> result(matrix);
|
|
return result.forget();
|
|
}
|
|
|
|
already_AddRefed<Animation>
|
|
Element::Animate(JSContext* aContext,
|
|
JS::Handle<JSObject*> aKeyframes,
|
|
const UnrestrictedDoubleOrKeyframeAnimationOptions& aOptions,
|
|
ErrorResult& aError)
|
|
{
|
|
Nullable<ElementOrCSSPseudoElement> target;
|
|
target.SetValue().SetAsElement() = this;
|
|
return Animate(target, aContext, aKeyframes, aOptions, aError);
|
|
}
|
|
|
|
/* static */ already_AddRefed<Animation>
|
|
Element::Animate(const Nullable<ElementOrCSSPseudoElement>& aTarget,
|
|
JSContext* aContext,
|
|
JS::Handle<JSObject*> aKeyframes,
|
|
const UnrestrictedDoubleOrKeyframeAnimationOptions& aOptions,
|
|
ErrorResult& aError)
|
|
{
|
|
MOZ_ASSERT(!aTarget.IsNull() &&
|
|
(aTarget.Value().IsElement() ||
|
|
aTarget.Value().IsCSSPseudoElement()),
|
|
"aTarget should be initialized");
|
|
|
|
RefPtr<Element> referenceElement;
|
|
if (aTarget.Value().IsElement()) {
|
|
referenceElement = &aTarget.Value().GetAsElement();
|
|
} else {
|
|
referenceElement = aTarget.Value().GetAsCSSPseudoElement().ParentElement();
|
|
}
|
|
|
|
nsCOMPtr<nsIGlobalObject> ownerGlobal = referenceElement->GetOwnerGlobal();
|
|
if (!ownerGlobal) {
|
|
aError.Throw(NS_ERROR_FAILURE);
|
|
return nullptr;
|
|
}
|
|
GlobalObject global(aContext, ownerGlobal->GetGlobalJSObject());
|
|
MOZ_ASSERT(!global.Failed());
|
|
|
|
// Wrap the aKeyframes object for the cross-compartment case.
|
|
JS::Rooted<JSObject*> keyframes(aContext);
|
|
keyframes = aKeyframes;
|
|
Maybe<JSAutoCompartment> ac;
|
|
if (js::GetContextCompartment(aContext) !=
|
|
js::GetObjectCompartment(ownerGlobal->GetGlobalJSObject())) {
|
|
ac.emplace(aContext, ownerGlobal->GetGlobalJSObject());
|
|
if (!JS_WrapObject(aContext, &keyframes)) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
RefPtr<KeyframeEffect> effect =
|
|
KeyframeEffect::Constructor(global, aTarget, keyframes, aOptions, aError);
|
|
if (aError.Failed()) {
|
|
return nullptr;
|
|
}
|
|
|
|
AnimationTimeline* timeline = referenceElement->OwnerDoc()->Timeline();
|
|
RefPtr<Animation> animation =
|
|
Animation::Constructor(global, effect,
|
|
Optional<AnimationTimeline*>(timeline), aError);
|
|
if (aError.Failed()) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (aOptions.IsKeyframeAnimationOptions()) {
|
|
animation->SetId(aOptions.GetAsKeyframeAnimationOptions().mId);
|
|
}
|
|
|
|
animation->Play(aError, Animation::LimitBehavior::AutoRewind);
|
|
if (aError.Failed()) {
|
|
return nullptr;
|
|
}
|
|
|
|
return animation.forget();
|
|
}
|
|
|
|
void
|
|
Element::GetAnimations(const AnimationFilter& filter,
|
|
nsTArray<RefPtr<Animation>>& aAnimations)
|
|
{
|
|
nsIDocument* doc = GetComposedDoc();
|
|
if (doc) {
|
|
doc->FlushPendingNotifications(FlushType::Style);
|
|
}
|
|
|
|
Element* elem = this;
|
|
CSSPseudoElementType pseudoType = CSSPseudoElementType::NotPseudo;
|
|
// For animations on generated-content elements, the animations are stored
|
|
// on the parent element.
|
|
if (IsGeneratedContentContainerForBefore()) {
|
|
elem = GetParentElement();
|
|
pseudoType = CSSPseudoElementType::before;
|
|
} else if (IsGeneratedContentContainerForAfter()) {
|
|
elem = GetParentElement();
|
|
pseudoType = CSSPseudoElementType::after;
|
|
}
|
|
|
|
if (!elem) {
|
|
return;
|
|
}
|
|
|
|
if (!filter.mSubtree ||
|
|
pseudoType == CSSPseudoElementType::before ||
|
|
pseudoType == CSSPseudoElementType::after) {
|
|
GetAnimationsUnsorted(elem, pseudoType, aAnimations);
|
|
} else {
|
|
for (nsIContent* node = this;
|
|
node;
|
|
node = node->GetNextNode(this)) {
|
|
if (!node->IsElement()) {
|
|
continue;
|
|
}
|
|
Element* element = node->AsElement();
|
|
Element::GetAnimationsUnsorted(element, CSSPseudoElementType::NotPseudo,
|
|
aAnimations);
|
|
Element::GetAnimationsUnsorted(element, CSSPseudoElementType::before,
|
|
aAnimations);
|
|
Element::GetAnimationsUnsorted(element, CSSPseudoElementType::after,
|
|
aAnimations);
|
|
}
|
|
}
|
|
aAnimations.Sort(AnimationPtrComparator<RefPtr<Animation>>());
|
|
}
|
|
|
|
/* static */ void
|
|
Element::GetAnimationsUnsorted(Element* aElement,
|
|
CSSPseudoElementType aPseudoType,
|
|
nsTArray<RefPtr<Animation>>& aAnimations)
|
|
{
|
|
MOZ_ASSERT(aPseudoType == CSSPseudoElementType::NotPseudo ||
|
|
aPseudoType == CSSPseudoElementType::after ||
|
|
aPseudoType == CSSPseudoElementType::before,
|
|
"Unsupported pseudo type");
|
|
MOZ_ASSERT(aElement, "Null element");
|
|
|
|
EffectSet* effects = EffectSet::GetEffectSet(aElement, aPseudoType);
|
|
if (!effects) {
|
|
return;
|
|
}
|
|
|
|
for (KeyframeEffectReadOnly* effect : *effects) {
|
|
MOZ_ASSERT(effect && effect->GetAnimation(),
|
|
"Only effects associated with an animation should be "
|
|
"added to an element's effect set");
|
|
Animation* animation = effect->GetAnimation();
|
|
|
|
MOZ_ASSERT(animation->IsRelevant(),
|
|
"Only relevant animations should be added to an element's "
|
|
"effect set");
|
|
aAnimations.AppendElement(animation);
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Element::GetInnerHTML(nsAString& aInnerHTML)
|
|
{
|
|
GetMarkup(false, aInnerHTML);
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
Element::SetInnerHTML(const nsAString& aInnerHTML, ErrorResult& aError)
|
|
{
|
|
SetInnerHTMLInternal(aInnerHTML, aError);
|
|
}
|
|
|
|
void
|
|
Element::GetOuterHTML(nsAString& aOuterHTML)
|
|
{
|
|
GetMarkup(true, aOuterHTML);
|
|
}
|
|
|
|
void
|
|
Element::SetOuterHTML(const nsAString& aOuterHTML, ErrorResult& aError)
|
|
{
|
|
nsCOMPtr<nsINode> parent = GetParentNode();
|
|
if (!parent) {
|
|
return;
|
|
}
|
|
|
|
if (parent->NodeType() == nsIDOMNode::DOCUMENT_NODE) {
|
|
aError.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR);
|
|
return;
|
|
}
|
|
|
|
if (OwnerDoc()->IsHTMLDocument()) {
|
|
nsIAtom* localName;
|
|
int32_t namespaceID;
|
|
if (parent->IsElement()) {
|
|
localName = parent->NodeInfo()->NameAtom();
|
|
namespaceID = parent->NodeInfo()->NamespaceID();
|
|
} else {
|
|
NS_ASSERTION(parent->NodeType() == nsIDOMNode::DOCUMENT_FRAGMENT_NODE,
|
|
"How come the parent isn't a document, a fragment or an element?");
|
|
localName = nsGkAtoms::body;
|
|
namespaceID = kNameSpaceID_XHTML;
|
|
}
|
|
RefPtr<DocumentFragment> fragment =
|
|
new DocumentFragment(OwnerDoc()->NodeInfoManager());
|
|
nsContentUtils::ParseFragmentHTML(aOuterHTML,
|
|
fragment,
|
|
localName,
|
|
namespaceID,
|
|
OwnerDoc()->GetCompatibilityMode() ==
|
|
eCompatibility_NavQuirks,
|
|
true);
|
|
parent->ReplaceChild(*fragment, *this, aError);
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsINode> context;
|
|
if (parent->IsElement()) {
|
|
context = parent;
|
|
} else {
|
|
NS_ASSERTION(parent->NodeType() == nsIDOMNode::DOCUMENT_FRAGMENT_NODE,
|
|
"How come the parent isn't a document, a fragment or an element?");
|
|
RefPtr<mozilla::dom::NodeInfo> info =
|
|
OwnerDoc()->NodeInfoManager()->GetNodeInfo(nsGkAtoms::body,
|
|
nullptr,
|
|
kNameSpaceID_XHTML,
|
|
nsIDOMNode::ELEMENT_NODE);
|
|
context = NS_NewHTMLBodyElement(info.forget(), FROM_PARSER_FRAGMENT);
|
|
}
|
|
|
|
nsCOMPtr<nsIDOMDocumentFragment> df;
|
|
aError = nsContentUtils::CreateContextualFragment(context,
|
|
aOuterHTML,
|
|
true,
|
|
getter_AddRefs(df));
|
|
if (aError.Failed()) {
|
|
return;
|
|
}
|
|
nsCOMPtr<nsINode> fragment = do_QueryInterface(df);
|
|
parent->ReplaceChild(*fragment, *this, aError);
|
|
}
|
|
|
|
enum nsAdjacentPosition {
|
|
eBeforeBegin,
|
|
eAfterBegin,
|
|
eBeforeEnd,
|
|
eAfterEnd
|
|
};
|
|
|
|
void
|
|
Element::InsertAdjacentHTML(const nsAString& aPosition, const nsAString& aText,
|
|
ErrorResult& aError)
|
|
{
|
|
nsAdjacentPosition position;
|
|
if (aPosition.LowerCaseEqualsLiteral("beforebegin")) {
|
|
position = eBeforeBegin;
|
|
} else if (aPosition.LowerCaseEqualsLiteral("afterbegin")) {
|
|
position = eAfterBegin;
|
|
} else if (aPosition.LowerCaseEqualsLiteral("beforeend")) {
|
|
position = eBeforeEnd;
|
|
} else if (aPosition.LowerCaseEqualsLiteral("afterend")) {
|
|
position = eAfterEnd;
|
|
} else {
|
|
aError.Throw(NS_ERROR_DOM_SYNTAX_ERR);
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> destination;
|
|
if (position == eBeforeBegin || position == eAfterEnd) {
|
|
destination = GetParent();
|
|
if (!destination) {
|
|
aError.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR);
|
|
return;
|
|
}
|
|
} else {
|
|
destination = this;
|
|
}
|
|
|
|
nsIDocument* doc = OwnerDoc();
|
|
|
|
// Needed when insertAdjacentHTML is used in combination with contenteditable
|
|
mozAutoDocUpdate updateBatch(doc, UPDATE_CONTENT_MODEL, true);
|
|
nsAutoScriptLoaderDisabler sld(doc);
|
|
|
|
// Batch possible DOMSubtreeModified events.
|
|
mozAutoSubtreeModified subtree(doc, nullptr);
|
|
|
|
// Parse directly into destination if possible
|
|
if (doc->IsHTMLDocument() && !OwnerDoc()->MayHaveDOMMutationObservers() &&
|
|
(position == eBeforeEnd ||
|
|
(position == eAfterEnd && !GetNextSibling()) ||
|
|
(position == eAfterBegin && !GetFirstChild()))) {
|
|
int32_t oldChildCount = destination->GetChildCount();
|
|
int32_t contextNs = destination->GetNameSpaceID();
|
|
nsIAtom* contextLocal = destination->NodeInfo()->NameAtom();
|
|
if (contextLocal == nsGkAtoms::html && contextNs == kNameSpaceID_XHTML) {
|
|
// For compat with IE6 through IE9. Willful violation of HTML5 as of
|
|
// 2011-04-06. CreateContextualFragment does the same already.
|
|
// Spec bug: http://www.w3.org/Bugs/Public/show_bug.cgi?id=12434
|
|
contextLocal = nsGkAtoms::body;
|
|
}
|
|
aError = nsContentUtils::ParseFragmentHTML(aText,
|
|
destination,
|
|
contextLocal,
|
|
contextNs,
|
|
doc->GetCompatibilityMode() ==
|
|
eCompatibility_NavQuirks,
|
|
true);
|
|
// HTML5 parser has notified, but not fired mutation events.
|
|
nsContentUtils::FireMutationEventsForDirectParsing(doc, destination,
|
|
oldChildCount);
|
|
return;
|
|
}
|
|
|
|
// couldn't parse directly
|
|
nsCOMPtr<nsIDOMDocumentFragment> df;
|
|
aError = nsContentUtils::CreateContextualFragment(destination,
|
|
aText,
|
|
true,
|
|
getter_AddRefs(df));
|
|
if (aError.Failed()) {
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsINode> fragment = do_QueryInterface(df);
|
|
|
|
// Suppress assertion about node removal mutation events that can't have
|
|
// listeners anyway, because no one has had the chance to register mutation
|
|
// listeners on the fragment that comes from the parser.
|
|
nsAutoScriptBlockerSuppressNodeRemoved scriptBlocker;
|
|
|
|
nsAutoMutationBatch mb(destination, true, false);
|
|
switch (position) {
|
|
case eBeforeBegin:
|
|
destination->InsertBefore(*fragment, this, aError);
|
|
break;
|
|
case eAfterBegin:
|
|
static_cast<nsINode*>(this)->InsertBefore(*fragment, GetFirstChild(),
|
|
aError);
|
|
break;
|
|
case eBeforeEnd:
|
|
static_cast<nsINode*>(this)->AppendChild(*fragment, aError);
|
|
break;
|
|
case eAfterEnd:
|
|
destination->InsertBefore(*fragment, GetNextSibling(), aError);
|
|
break;
|
|
}
|
|
}
|
|
|
|
nsINode*
|
|
Element::InsertAdjacent(const nsAString& aWhere,
|
|
nsINode* aNode,
|
|
ErrorResult& aError)
|
|
{
|
|
if (aWhere.LowerCaseEqualsLiteral("beforebegin")) {
|
|
nsCOMPtr<nsINode> parent = GetParentNode();
|
|
if (!parent) {
|
|
return nullptr;
|
|
}
|
|
parent->InsertBefore(*aNode, this, aError);
|
|
} else if (aWhere.LowerCaseEqualsLiteral("afterbegin")) {
|
|
nsCOMPtr<nsINode> refNode = GetFirstChild();
|
|
static_cast<nsINode*>(this)->InsertBefore(*aNode, refNode, aError);
|
|
} else if (aWhere.LowerCaseEqualsLiteral("beforeend")) {
|
|
static_cast<nsINode*>(this)->AppendChild(*aNode, aError);
|
|
} else if (aWhere.LowerCaseEqualsLiteral("afterend")) {
|
|
nsCOMPtr<nsINode> parent = GetParentNode();
|
|
if (!parent) {
|
|
return nullptr;
|
|
}
|
|
nsCOMPtr<nsINode> refNode = GetNextSibling();
|
|
parent->InsertBefore(*aNode, refNode, aError);
|
|
} else {
|
|
aError.Throw(NS_ERROR_DOM_SYNTAX_ERR);
|
|
return nullptr;
|
|
}
|
|
|
|
return aError.Failed() ? nullptr : aNode;
|
|
}
|
|
|
|
Element*
|
|
Element::InsertAdjacentElement(const nsAString& aWhere,
|
|
Element& aElement,
|
|
ErrorResult& aError) {
|
|
nsINode* newNode = InsertAdjacent(aWhere, &aElement, aError);
|
|
MOZ_ASSERT(!newNode || newNode->IsElement());
|
|
|
|
return newNode ? newNode->AsElement() : nullptr;
|
|
}
|
|
|
|
void
|
|
Element::InsertAdjacentText(
|
|
const nsAString& aWhere, const nsAString& aData, ErrorResult& aError)
|
|
{
|
|
RefPtr<nsTextNode> textNode = OwnerDoc()->CreateTextNode(aData);
|
|
InsertAdjacent(aWhere, textNode, aError);
|
|
}
|
|
|
|
TextEditor*
|
|
Element::GetTextEditorInternal()
|
|
{
|
|
nsCOMPtr<nsITextControlElement> textCtrl = do_QueryInterface(this);
|
|
return textCtrl ? textCtrl->GetTextEditor() : nullptr;
|
|
}
|
|
|
|
nsresult
|
|
Element::SetBoolAttr(nsIAtom* aAttr, bool aValue)
|
|
{
|
|
if (aValue) {
|
|
return SetAttr(kNameSpaceID_None, aAttr, EmptyString(), true);
|
|
}
|
|
|
|
return UnsetAttr(kNameSpaceID_None, aAttr, true);
|
|
}
|
|
|
|
void
|
|
Element::GetEnumAttr(nsIAtom* aAttr,
|
|
const char* aDefault,
|
|
nsAString& aResult) const
|
|
{
|
|
GetEnumAttr(aAttr, aDefault, aDefault, aResult);
|
|
}
|
|
|
|
void
|
|
Element::GetEnumAttr(nsIAtom* aAttr,
|
|
const char* aDefaultMissing,
|
|
const char* aDefaultInvalid,
|
|
nsAString& aResult) const
|
|
{
|
|
const nsAttrValue* attrVal = mAttrsAndChildren.GetAttr(aAttr);
|
|
|
|
aResult.Truncate();
|
|
|
|
if (!attrVal) {
|
|
if (aDefaultMissing) {
|
|
AppendASCIItoUTF16(nsDependentCString(aDefaultMissing), aResult);
|
|
} else {
|
|
SetDOMStringToNull(aResult);
|
|
}
|
|
} else {
|
|
if (attrVal->Type() == nsAttrValue::eEnum) {
|
|
attrVal->GetEnumString(aResult, true);
|
|
} else if (aDefaultInvalid) {
|
|
AppendASCIItoUTF16(nsDependentCString(aDefaultInvalid), aResult);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
Element::SetOrRemoveNullableStringAttr(nsIAtom* aName, const nsAString& aValue,
|
|
ErrorResult& aError)
|
|
{
|
|
if (DOMStringIsNull(aValue)) {
|
|
UnsetAttr(aName, aError);
|
|
} else {
|
|
SetAttr(aName, aValue, aError);
|
|
}
|
|
}
|
|
|
|
Directionality
|
|
Element::GetComputedDirectionality() const
|
|
{
|
|
nsIFrame* frame = GetPrimaryFrame();
|
|
if (frame) {
|
|
return frame->StyleVisibility()->mDirection == NS_STYLE_DIRECTION_LTR
|
|
? eDir_LTR : eDir_RTL;
|
|
}
|
|
|
|
return GetDirectionality();
|
|
}
|
|
|
|
float
|
|
Element::FontSizeInflation()
|
|
{
|
|
nsIFrame* frame = GetPrimaryFrame();
|
|
if (!frame) {
|
|
return -1.0;
|
|
}
|
|
|
|
if (nsLayoutUtils::FontSizeInflationEnabled(frame->PresContext())) {
|
|
return nsLayoutUtils::FontSizeInflationFor(frame);
|
|
}
|
|
|
|
return 1.0;
|
|
}
|
|
|
|
net::ReferrerPolicy
|
|
Element::GetReferrerPolicyAsEnum()
|
|
{
|
|
if (IsHTMLElement()) {
|
|
const nsAttrValue* referrerValue = GetParsedAttr(nsGkAtoms::referrerpolicy);
|
|
return ReferrerPolicyFromAttr(referrerValue);
|
|
}
|
|
return net::RP_Unset;
|
|
}
|
|
|
|
net::ReferrerPolicy
|
|
Element::ReferrerPolicyFromAttr(const nsAttrValue* aValue)
|
|
{
|
|
if (aValue && aValue->Type() == nsAttrValue::eEnum) {
|
|
return net::ReferrerPolicy(aValue->GetEnumValue());
|
|
}
|
|
return net::RP_Unset;
|
|
}
|
|
|
|
already_AddRefed<nsDOMStringMap>
|
|
Element::Dataset()
|
|
{
|
|
nsDOMSlots *slots = DOMSlots();
|
|
|
|
if (!slots->mDataset) {
|
|
// mDataset is a weak reference so assignment will not AddRef.
|
|
// AddRef is called before returning the pointer.
|
|
slots->mDataset = new nsDOMStringMap(this);
|
|
}
|
|
|
|
RefPtr<nsDOMStringMap> ret = slots->mDataset;
|
|
return ret.forget();
|
|
}
|
|
|
|
void
|
|
Element::ClearDataset()
|
|
{
|
|
nsDOMSlots *slots = GetExistingDOMSlots();
|
|
|
|
MOZ_ASSERT(slots && slots->mDataset,
|
|
"Slots should exist and dataset should not be null.");
|
|
slots->mDataset = nullptr;
|
|
}
|
|
|
|
nsDataHashtable<nsRefPtrHashKey<DOMIntersectionObserver>, int32_t>*
|
|
Element::RegisteredIntersectionObservers()
|
|
{
|
|
nsDOMSlots* slots = DOMSlots();
|
|
return &slots->mRegisteredIntersectionObservers;
|
|
}
|
|
|
|
enum nsPreviousIntersectionThreshold {
|
|
eUninitialized = -2,
|
|
eNonIntersecting = -1
|
|
};
|
|
|
|
void
|
|
Element::RegisterIntersectionObserver(DOMIntersectionObserver* aObserver)
|
|
{
|
|
RegisteredIntersectionObservers()->LookupForAdd(aObserver).OrInsert([]() {
|
|
// Value can be:
|
|
// -2: Makes sure next calculated threshold always differs, leading to a
|
|
// notification task being scheduled.
|
|
// -1: Non-intersecting.
|
|
// >= 0: Intersecting, valid index of aObserver->mThresholds.
|
|
return eUninitialized;
|
|
});
|
|
}
|
|
|
|
void
|
|
Element::UnregisterIntersectionObserver(DOMIntersectionObserver* aObserver)
|
|
{
|
|
RegisteredIntersectionObservers()->Remove(aObserver);
|
|
}
|
|
|
|
bool
|
|
Element::UpdateIntersectionObservation(DOMIntersectionObserver* aObserver, int32_t aThreshold)
|
|
{
|
|
bool updated = false;
|
|
if (auto entry = RegisteredIntersectionObservers()->Lookup(aObserver)) {
|
|
updated = entry.Data() != aThreshold;
|
|
entry.Data() = aThreshold;
|
|
}
|
|
return updated;
|
|
}
|
|
|
|
void
|
|
Element::ClearServoData() {
|
|
#ifdef MOZ_STYLO
|
|
Servo_Element_ClearData(this);
|
|
#else
|
|
MOZ_CRASH("Accessing servo node data in non-stylo build");
|
|
#endif
|
|
}
|
|
|
|
void
|
|
Element::SetCustomElementData(CustomElementData* aData)
|
|
{
|
|
nsDOMSlots *slots = DOMSlots();
|
|
MOZ_ASSERT(!slots->mCustomElementData, "Custom element data may not be changed once set.");
|
|
slots->mCustomElementData = aData;
|
|
}
|