forked from mirrors/gecko-dev
2275 lines
84 KiB
C++
2275 lines
84 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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#ifndef nsINode_h___
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#define nsINode_h___
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#include "mozilla/Likely.h"
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#include "mozilla/UniquePtr.h"
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#include "nsCOMPtr.h" // for member, local
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#include "nsGkAtoms.h" // for nsGkAtoms::baseURIProperty
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#include "mozilla/dom/NodeInfo.h" // member (in nsCOMPtr)
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#include "nsIWeakReference.h"
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#include "nsNodeInfoManager.h" // for use in NodePrincipal()
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#include "nsPropertyTable.h" // for typedefs
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#include "nsTObserverArray.h" // for member
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#include "mozilla/ErrorResult.h"
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#include "mozilla/LinkedList.h"
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#include "mozilla/MemoryReporting.h"
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#include "mozilla/dom/EventTarget.h" // for base class
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#include "js/TypeDecls.h" // for Handle, Value, JSObject, JSContext
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#include "mozilla/dom/DOMString.h"
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#include "mozilla/dom/BindingDeclarations.h"
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#include "mozilla/dom/NodeBinding.h"
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#include "nsTHashtable.h"
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#include <iosfwd>
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// Including 'windows.h' will #define GetClassInfo to something else.
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#ifdef XP_WIN
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# ifdef GetClassInfo
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# undef GetClassInfo
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# endif
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#endif
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class AttrArray;
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class nsAttrChildContentList;
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template <typename T>
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class nsCOMArray;
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class nsDOMAttributeMap;
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class nsIAnimationObserver;
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class nsIContent;
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class nsIContentSecurityPolicy;
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class nsIFrame;
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class nsIHTMLCollection;
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class nsIMutationObserver;
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class nsINode;
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class nsINodeList;
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class nsIPrincipal;
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class nsIURI;
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class nsNodeSupportsWeakRefTearoff;
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class nsDOMMutationObserver;
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class nsRange;
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class nsWindowSizes;
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struct RawServoSelectorList;
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namespace mozilla {
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class EventListenerManager;
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class PresShell;
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class TextEditor;
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namespace dom {
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/**
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* @return true if aChar is what the WHATWG defines as a 'ascii whitespace'.
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* https://infra.spec.whatwg.org/#ascii-whitespace
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*/
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inline bool IsSpaceCharacter(char16_t aChar) {
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return aChar == ' ' || aChar == '\t' || aChar == '\n' || aChar == '\r' ||
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aChar == '\f';
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}
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inline bool IsSpaceCharacter(char aChar) {
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return aChar == ' ' || aChar == '\t' || aChar == '\n' || aChar == '\r' ||
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aChar == '\f';
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}
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class AccessibleNode;
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template <typename T>
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class AncestorsOfTypeIterator;
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struct BoxQuadOptions;
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struct ConvertCoordinateOptions;
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class DocGroup;
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class Document;
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class DocumentFragment;
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class DocumentOrShadowRoot;
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class DOMPoint;
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class DOMQuad;
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class DOMRectReadOnly;
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class Element;
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class EventHandlerNonNull;
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template <typename T>
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class FlatTreeAncestorsOfTypeIterator;
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template <typename T>
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class InclusiveAncestorsOfTypeIterator;
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template <typename T>
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class InclusiveFlatTreeAncestorsOfTypeIterator;
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class LinkStyle;
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class MutationObservers;
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template <typename T>
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class Optional;
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class OwningNodeOrString;
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template <typename>
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class Sequence;
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class ShadowRoot;
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class SVGUseElement;
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class Text;
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class TextOrElementOrDocument;
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struct DOMPointInit;
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struct GetRootNodeOptions;
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enum class CallerType : uint32_t;
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} // namespace dom
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} // namespace mozilla
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#define NODE_FLAG_BIT(n_) \
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(nsWrapperCache::FlagsType(1U) << (WRAPPER_CACHE_FLAGS_BITS_USED + (n_)))
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enum {
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// This bit will be set if the node has a listener manager.
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NODE_HAS_LISTENERMANAGER = NODE_FLAG_BIT(0),
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// Whether this node has had any properties set on it
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NODE_HAS_PROPERTIES = NODE_FLAG_BIT(1),
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// Whether the node has some ancestor, possibly itself, that is native
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// anonymous. This includes ancestors crossing XBL scopes, in cases when an
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// XBL binding is attached to an element which has a native anonymous
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// ancestor. This flag is set-once: once a node has it, it must not be
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// removed.
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// NOTE: Should only be used on nsIContent nodes
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NODE_IS_IN_NATIVE_ANONYMOUS_SUBTREE = NODE_FLAG_BIT(2),
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// Whether this node is the root of a native anonymous (from the perspective
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// of its parent) subtree. This flag is set-once: once a node has it, it
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// must not be removed.
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// NOTE: Should only be used on nsIContent nodes
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NODE_IS_NATIVE_ANONYMOUS_ROOT = NODE_FLAG_BIT(3),
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NODE_IS_EDITABLE = NODE_FLAG_BIT(4),
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// Whether the node participates in a shadow tree.
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NODE_IS_IN_SHADOW_TREE = NODE_FLAG_BIT(5),
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// Node has an :empty or :-moz-only-whitespace selector
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NODE_HAS_EMPTY_SELECTOR = NODE_FLAG_BIT(6),
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// A child of the node has a selector such that any insertion,
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// removal, or appending of children requires restyling the parent.
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NODE_HAS_SLOW_SELECTOR = NODE_FLAG_BIT(7),
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// A child of the node has a :first-child, :-moz-first-node,
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// :only-child, :last-child or :-moz-last-node selector.
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NODE_HAS_EDGE_CHILD_SELECTOR = NODE_FLAG_BIT(8),
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// A child of the node has a selector such that any insertion or
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// removal of children requires restyling later siblings of that
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// element. Additionally (in this manner it is stronger than
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// NODE_HAS_SLOW_SELECTOR), if a child's style changes due to any
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// other content tree changes (e.g., the child changes to or from
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// matching :empty due to a grandchild insertion or removal), the
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// child's later siblings must also be restyled.
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NODE_HAS_SLOW_SELECTOR_LATER_SIBLINGS = NODE_FLAG_BIT(9),
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NODE_ALL_SELECTOR_FLAGS = NODE_HAS_EMPTY_SELECTOR | NODE_HAS_SLOW_SELECTOR |
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NODE_HAS_EDGE_CHILD_SELECTOR |
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NODE_HAS_SLOW_SELECTOR_LATER_SIBLINGS,
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// This node needs to go through frame construction to get a frame (or
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// undisplayed entry).
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NODE_NEEDS_FRAME = NODE_FLAG_BIT(10),
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// At least one descendant in the flattened tree has NODE_NEEDS_FRAME set.
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// This should be set on every node on the flattened tree path between the
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// node(s) with NODE_NEEDS_FRAME and the root content.
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NODE_DESCENDANTS_NEED_FRAMES = NODE_FLAG_BIT(11),
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// Set if the node has the accesskey attribute set.
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NODE_HAS_ACCESSKEY = NODE_FLAG_BIT(12),
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// Set if the node has right-to-left directionality
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NODE_HAS_DIRECTION_RTL = NODE_FLAG_BIT(13),
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// Set if the node has left-to-right directionality
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NODE_HAS_DIRECTION_LTR = NODE_FLAG_BIT(14),
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NODE_ALL_DIRECTION_FLAGS = NODE_HAS_DIRECTION_LTR | NODE_HAS_DIRECTION_RTL,
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NODE_HAS_BEEN_IN_UA_WIDGET = NODE_FLAG_BIT(15),
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// Set if the node has a nonce value and a header delivered CSP.
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NODE_HAS_NONCE_AND_HEADER_CSP = NODE_FLAG_BIT(16),
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NODE_KEEPS_DOMARENA = NODE_FLAG_BIT(17),
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// Remaining bits are node type specific.
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NODE_TYPE_SPECIFIC_BITS_OFFSET = 18
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};
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// Make sure we have space for our bits
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#define ASSERT_NODE_FLAGS_SPACE(n) \
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static_assert(WRAPPER_CACHE_FLAGS_BITS_USED + (n) <= \
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sizeof(nsWrapperCache::FlagsType) * 8, \
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"Not enough space for our bits")
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ASSERT_NODE_FLAGS_SPACE(NODE_TYPE_SPECIFIC_BITS_OFFSET);
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/**
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* Class used to detect unexpected mutations. To use the class create an
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* nsMutationGuard on the stack before unexpected mutations could occur.
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* You can then at any time call Mutated to check if any unexpected mutations
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* have occurred.
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*/
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class nsMutationGuard {
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public:
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nsMutationGuard() { mStartingGeneration = sGeneration; }
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/**
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* Returns true if any unexpected mutations have occurred. You can pass in
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* an 8-bit ignore count to ignore a number of expected mutations.
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*
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* We don't need to care about overflow because subtraction of uint64_t's is
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* finding the difference between two elements of the group Z < 2^64. Once
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* we know the difference between two elements we only need to check that is
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* less than the given number of mutations to know less than that many
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* mutations occured. Assuming constant 1ns mutations it would take 584
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* years for sGeneration to fully wrap around so we can ignore a guard living
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* through a full wrap around.
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*/
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bool Mutated(uint8_t aIgnoreCount) {
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return (sGeneration - mStartingGeneration) > aIgnoreCount;
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}
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// This function should be called whenever a mutation that we want to keep
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// track of happen. For now this is only done when children are added or
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// removed, but we might do it for attribute changes too in the future.
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static void DidMutate() { sGeneration++; }
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private:
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// This is the value sGeneration had when the guard was constructed.
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uint64_t mStartingGeneration;
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// This value is incremented on every mutation, for the life of the process.
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static uint64_t sGeneration;
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};
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/**
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* A class that implements nsIWeakReference
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*/
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class nsNodeWeakReference final : public nsIWeakReference {
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public:
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explicit nsNodeWeakReference(nsINode* aNode);
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// nsISupports
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NS_DECL_ISUPPORTS
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// nsIWeakReference
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NS_DECL_NSIWEAKREFERENCE
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size_t SizeOfOnlyThis(mozilla::MallocSizeOf aMallocSizeOf) const override;
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void NoticeNodeDestruction() { mObject = nullptr; }
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private:
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~nsNodeWeakReference();
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};
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// This should be used for any nsINode sub-class that has fields of its own
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// that it needs to measure; any sub-class that doesn't use it will inherit
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// AddSizeOfExcludingThis from its super-class. AddSizeOfIncludingThis() need
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// not be defined, it is inherited from nsINode.
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#define NS_DECL_ADDSIZEOFEXCLUDINGTHIS \
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virtual void AddSizeOfExcludingThis(nsWindowSizes& aSizes, \
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size_t* aNodeSize) const override;
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// IID for the nsINode interface
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// Must be kept in sync with xpcom/rust/xpcom/src/interfaces/nonidl.rs
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#define NS_INODE_IID \
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{ \
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0x70ba4547, 0x7699, 0x44fc, { \
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0xb3, 0x20, 0x52, 0xdb, 0xe3, 0xd1, 0xf9, 0x0a \
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} \
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}
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/**
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* An internal interface that abstracts some DOMNode-related parts that both
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* nsIContent and Document share. An instance of this interface has a list
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* of nsIContent children and provides access to them.
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*/
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class nsINode : public mozilla::dom::EventTarget {
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#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
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void AssertInvariantsOnNodeInfoChange();
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#endif
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public:
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typedef mozilla::dom::BoxQuadOptions BoxQuadOptions;
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typedef mozilla::dom::ConvertCoordinateOptions ConvertCoordinateOptions;
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typedef mozilla::dom::DocGroup DocGroup;
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typedef mozilla::dom::Document Document;
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typedef mozilla::dom::DOMPoint DOMPoint;
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typedef mozilla::dom::DOMPointInit DOMPointInit;
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typedef mozilla::dom::DOMQuad DOMQuad;
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typedef mozilla::dom::DOMRectReadOnly DOMRectReadOnly;
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typedef mozilla::dom::OwningNodeOrString OwningNodeOrString;
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typedef mozilla::dom::TextOrElementOrDocument TextOrElementOrDocument;
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typedef mozilla::dom::CallerType CallerType;
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typedef mozilla::ErrorResult ErrorResult;
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// XXXbz Maybe we should codegen a class holding these constants and
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// inherit from it...
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static const auto ELEMENT_NODE = mozilla::dom::Node_Binding::ELEMENT_NODE;
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static const auto ATTRIBUTE_NODE = mozilla::dom::Node_Binding::ATTRIBUTE_NODE;
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static const auto TEXT_NODE = mozilla::dom::Node_Binding::TEXT_NODE;
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static const auto CDATA_SECTION_NODE =
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mozilla::dom::Node_Binding::CDATA_SECTION_NODE;
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static const auto ENTITY_REFERENCE_NODE =
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mozilla::dom::Node_Binding::ENTITY_REFERENCE_NODE;
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static const auto ENTITY_NODE = mozilla::dom::Node_Binding::ENTITY_NODE;
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static const auto PROCESSING_INSTRUCTION_NODE =
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mozilla::dom::Node_Binding::PROCESSING_INSTRUCTION_NODE;
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static const auto COMMENT_NODE = mozilla::dom::Node_Binding::COMMENT_NODE;
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static const auto DOCUMENT_NODE = mozilla::dom::Node_Binding::DOCUMENT_NODE;
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static const auto DOCUMENT_TYPE_NODE =
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mozilla::dom::Node_Binding::DOCUMENT_TYPE_NODE;
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static const auto DOCUMENT_FRAGMENT_NODE =
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mozilla::dom::Node_Binding::DOCUMENT_FRAGMENT_NODE;
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static const auto NOTATION_NODE = mozilla::dom::Node_Binding::NOTATION_NODE;
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static const auto MAX_NODE_TYPE = NOTATION_NODE;
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void* operator new(size_t aSize, nsNodeInfoManager* aManager);
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void* operator new(size_t aSize) = delete;
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void operator delete(void* aPtr);
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template <class T>
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using Sequence = mozilla::dom::Sequence<T>;
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NS_DECLARE_STATIC_IID_ACCESSOR(NS_INODE_IID)
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// The |aNodeSize| outparam on this function is where the actual node size
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// value is put. It gets added to the appropriate value within |aSizes| by
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// AddSizeOfNodeTree().
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//
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// Among the sub-classes that inherit (directly or indirectly) from nsINode,
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// measurement of the following members may be added later if DMD finds it is
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// worthwhile:
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// - nsGenericHTMLElement: mForm, mFieldSet
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// - nsGenericHTMLFrameElement: mFrameLoader (bug 672539)
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// - HTMLBodyElement: mContentStyleRule
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// - HTMLDataListElement: mOptions
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// - HTMLFieldSetElement: mElements, mDependentElements, mFirstLegend
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// - HTMLFormElement: many!
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// - HTMLFrameSetElement: mRowSpecs, mColSpecs
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// - HTMLInputElement: mInputData, mFiles, mFileList, mStaticDocfileList
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// - nsHTMLMapElement: mAreas
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// - HTMLMediaElement: many!
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// - nsHTMLOutputElement: mDefaultValue, mTokenList
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// - nsHTMLRowElement: mCells
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// - nsHTMLSelectElement: mOptions, mRestoreState
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// - nsHTMLTableElement: mTBodies, mRows, mTableInheritedAttributes
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// - nsHTMLTableSectionElement: mRows
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// - nsHTMLTextAreaElement: mControllers, mState
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//
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// The following members don't need to be measured:
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// - nsIContent: mPrimaryFrame, because it's non-owning and measured elsewhere
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//
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virtual void AddSizeOfExcludingThis(nsWindowSizes& aSizes,
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size_t* aNodeSize) const;
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// SizeOfIncludingThis doesn't need to be overridden by sub-classes because
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// sub-classes of nsINode are guaranteed to be laid out in memory in such a
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// way that |this| points to the start of the allocated object, even in
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// methods of nsINode's sub-classes, so aSizes.mState.mMallocSizeOf(this) is
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// always safe to call no matter which object it was invoked on.
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void AddSizeOfIncludingThis(nsWindowSizes& aSizes, size_t* aNodeSize) const;
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friend class mozilla::dom::MutationObservers;
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friend class nsNodeWeakReference;
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friend class nsNodeSupportsWeakRefTearoff;
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friend class AttrArray;
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#ifdef MOZILLA_INTERNAL_API
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explicit nsINode(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
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#endif
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virtual ~nsINode();
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/**
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* Bit-flags to pass (or'ed together) to IsNodeOfType()
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*/
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enum {
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/** form control elements */
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eHTML_FORM_CONTROL = 1 << 6,
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/** animation elements */
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eANIMATION = 1 << 10,
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/** filter elements that implement SVGFilterPrimitiveStandardAttributes */
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eFILTER = 1 << 11,
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/** SVGGeometryElement */
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eSHAPE = 1 << 12
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};
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/**
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* API for doing a quick check if a content is of a given
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* type, such as Text, Document, Comment ... Use this when you can instead of
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* checking the tag.
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*
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* @param aFlags what types you want to test for (see above)
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* @return whether the content matches ALL flags passed in
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*/
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virtual bool IsNodeOfType(uint32_t aFlags) const = 0;
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bool IsContainerNode() const {
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return IsElement() || IsDocument() || IsDocumentFragment();
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}
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/**
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* Returns true if the node is a HTMLTemplate element.
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*/
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bool IsTemplateElement() const { return IsHTMLElement(nsGkAtoms::_template); }
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bool IsSlotable() const { return IsElement() || IsText(); }
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/**
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* Returns true if this is a document node.
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*/
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bool IsDocument() const {
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// One less pointer-chase than checking NodeType().
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return !GetParentNode() && IsInUncomposedDoc();
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}
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/**
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* Return this node as a document. Asserts IsDocument().
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*
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* This is defined inline in Document.h.
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*/
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inline Document* AsDocument();
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inline const Document* AsDocument() const;
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/**
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* Returns true if this is a document fragment node.
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*/
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bool IsDocumentFragment() const {
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return NodeType() == DOCUMENT_FRAGMENT_NODE;
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}
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/**
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* https://dom.spec.whatwg.org/#concept-tree-inclusive-descendant
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*
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* @param aNode must not be nullptr.
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*/
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bool IsInclusiveDescendantOf(const nsINode* aNode) const;
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/**
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* https://dom.spec.whatwg.org/#concept-shadow-including-inclusive-descendant
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*
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* @param aNode must not be nullptr.
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*/
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bool IsShadowIncludingInclusiveDescendantOf(const nsINode* aNode) const;
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/**
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* Return this node as a document fragment. Asserts IsDocumentFragment().
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*
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* This is defined inline in DocumentFragment.h.
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*/
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inline mozilla::dom::DocumentFragment* AsDocumentFragment();
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inline const mozilla::dom::DocumentFragment* AsDocumentFragment() const;
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JSObject* WrapObject(JSContext*, JS::Handle<JSObject*> aGivenProto) final;
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/**
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* Hook for constructing JS::ubi::Concrete specializations for memory
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* reporting. Specializations are defined in NodeUbiReporting.h.
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*/
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virtual void ConstructUbiNode(void* storage) = 0;
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/**
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* returns true if we are in priviliged code or
|
|
* layout.css.getBoxQuads.enabled == true.
|
|
*/
|
|
static bool HasBoxQuadsSupport(JSContext* aCx, JSObject* /* unused */);
|
|
|
|
protected:
|
|
/**
|
|
* WrapNode is called from WrapObject to actually wrap this node, WrapObject
|
|
* does some additional checks and fix-up that's common to all nodes. WrapNode
|
|
* should just call the DOM binding's Wrap function.
|
|
*
|
|
* aGivenProto is the prototype to use (or null if the default one should be
|
|
* used) and should just be passed directly on to the DOM binding's Wrap
|
|
* function.
|
|
*/
|
|
virtual JSObject* WrapNode(JSContext* aCx,
|
|
JS::Handle<JSObject*> aGivenProto) = 0;
|
|
|
|
public:
|
|
mozilla::dom::ParentObject GetParentObject()
|
|
const; // Implemented in Document.h
|
|
|
|
/**
|
|
* Returns the first child of a node or the first child of
|
|
* a template element's content if the provided node is a
|
|
* template element.
|
|
*/
|
|
nsIContent* GetFirstChildOfTemplateOrNode();
|
|
|
|
/**
|
|
* Return the scope chain parent for this node, for use in things
|
|
* like event handler compilation. Returning null means to use the
|
|
* global object as the scope chain parent.
|
|
*/
|
|
virtual nsINode* GetScopeChainParent() const;
|
|
|
|
MOZ_CAN_RUN_SCRIPT mozilla::dom::Element* GetParentFlexElement();
|
|
|
|
/**
|
|
* Return whether the node is an Element node. Faster than using `NodeType()`.
|
|
*/
|
|
bool IsElement() const { return GetBoolFlag(NodeIsElement); }
|
|
|
|
virtual bool IsTextControlElement() const { return false; }
|
|
|
|
// Returns non-null if this element subclasses `LinkStyle`.
|
|
virtual const mozilla::dom::LinkStyle* AsLinkStyle() const { return nullptr; }
|
|
mozilla::dom::LinkStyle* AsLinkStyle() {
|
|
return const_cast<mozilla::dom::LinkStyle*>(
|
|
static_cast<const nsINode*>(this)->AsLinkStyle());
|
|
}
|
|
|
|
/**
|
|
* Return this node as an Element. Should only be used for nodes
|
|
* for which IsElement() is true. This is defined inline in Element.h.
|
|
*/
|
|
inline mozilla::dom::Element* AsElement();
|
|
inline const mozilla::dom::Element* AsElement() const;
|
|
|
|
/**
|
|
* Return this node as nsIContent. Should only be used for nodes for which
|
|
* IsContent() is true.
|
|
*
|
|
* The assertion in nsIContent's constructor makes this safe.
|
|
*/
|
|
nsIContent* AsContent() {
|
|
MOZ_ASSERT(IsContent());
|
|
return reinterpret_cast<nsIContent*>(this);
|
|
}
|
|
const nsIContent* AsContent() const {
|
|
MOZ_ASSERT(IsContent());
|
|
return reinterpret_cast<const nsIContent*>(this);
|
|
}
|
|
|
|
/*
|
|
* Return whether the node is a Text node (which might be an actual
|
|
* textnode, or might be a CDATA section).
|
|
*/
|
|
bool IsText() const {
|
|
uint32_t nodeType = NodeType();
|
|
return nodeType == TEXT_NODE || nodeType == CDATA_SECTION_NODE;
|
|
}
|
|
|
|
/**
|
|
* Return this node as Text if it is one, otherwise null. This is defined
|
|
* inline in Text.h.
|
|
*/
|
|
inline mozilla::dom::Text* GetAsText();
|
|
inline const mozilla::dom::Text* GetAsText() const;
|
|
|
|
/**
|
|
* Return this node as Text. Asserts IsText(). This is defined inline in
|
|
* Text.h.
|
|
*/
|
|
inline mozilla::dom::Text* AsText();
|
|
inline const mozilla::dom::Text* AsText() const;
|
|
|
|
/*
|
|
* Return whether the node is a ProcessingInstruction node.
|
|
*/
|
|
bool IsProcessingInstruction() const {
|
|
return NodeType() == PROCESSING_INSTRUCTION_NODE;
|
|
}
|
|
|
|
/*
|
|
* Return whether the node is a CharacterData node (text, cdata,
|
|
* comment, processing instruction)
|
|
*/
|
|
bool IsCharacterData() const {
|
|
uint32_t nodeType = NodeType();
|
|
return nodeType == TEXT_NODE || nodeType == CDATA_SECTION_NODE ||
|
|
nodeType == PROCESSING_INSTRUCTION_NODE || nodeType == COMMENT_NODE;
|
|
}
|
|
|
|
/**
|
|
* Return whether the node is a Comment node.
|
|
*/
|
|
bool IsComment() const { return NodeType() == COMMENT_NODE; }
|
|
|
|
/**
|
|
* Return whether the node is an Attr node.
|
|
*/
|
|
bool IsAttr() const { return NodeType() == ATTRIBUTE_NODE; }
|
|
|
|
/**
|
|
* Return if this node has any children.
|
|
*/
|
|
bool HasChildren() const { return !!mFirstChild; }
|
|
|
|
/**
|
|
* Get the number of children
|
|
* @return the number of children
|
|
*/
|
|
uint32_t GetChildCount() const { return mChildCount; }
|
|
|
|
/**
|
|
* NOTE: this function is going to be removed soon (hopefully!) Don't use it
|
|
* in new code.
|
|
*
|
|
* Get a child by index
|
|
* @param aIndex the index of the child to get
|
|
* @return the child, or null if index out of bounds
|
|
*/
|
|
nsIContent* GetChildAt_Deprecated(uint32_t aIndex) const;
|
|
|
|
/**
|
|
* Get the index of a child within this content.
|
|
*
|
|
* @param aPossibleChild the child to get the index of.
|
|
* @return the index of the child, or -1 if not a child. Be aware that
|
|
* anonymous children (e.g. a <div> child of an <input> element) will
|
|
* result in -1.
|
|
*
|
|
* If the return value is not -1, then calling GetChildAt_Deprecated() with
|
|
* that value will return aPossibleChild.
|
|
*/
|
|
virtual int32_t ComputeIndexOf(const nsINode* aPossibleChild) const;
|
|
|
|
/**
|
|
* Returns the "node document" of this node.
|
|
*
|
|
* https://dom.spec.whatwg.org/#concept-node-document
|
|
*
|
|
* Note that in the case that this node is a document node this method
|
|
* will return |this|. That is different to the Node.ownerDocument DOM
|
|
* attribute (implemented by nsINode::GetOwnerDocument) which is specified to
|
|
* be null in that case:
|
|
*
|
|
* https://dom.spec.whatwg.org/#dom-node-ownerdocument
|
|
*
|
|
* For all other cases OwnerDoc and GetOwnerDocument behave identically.
|
|
*/
|
|
Document* OwnerDoc() const MOZ_NONNULL_RETURN {
|
|
return mNodeInfo->GetDocument();
|
|
}
|
|
|
|
/**
|
|
* Return the "owner document" of this node as an nsINode*. Implemented
|
|
* in Document.h.
|
|
*/
|
|
inline nsINode* OwnerDocAsNode() const MOZ_NONNULL_RETURN;
|
|
|
|
/**
|
|
* Returns true if the content has an ancestor that is a document.
|
|
*
|
|
* @return whether this content is in a document tree
|
|
*/
|
|
bool IsInUncomposedDoc() const { return GetBoolFlag(IsInDocument); }
|
|
|
|
/**
|
|
* Get the document that this content is currently in, if any. This will be
|
|
* null if the content has no ancestor that is a document.
|
|
*
|
|
* @return the current document
|
|
*/
|
|
|
|
Document* GetUncomposedDoc() const {
|
|
return IsInUncomposedDoc() ? OwnerDoc() : nullptr;
|
|
}
|
|
|
|
/**
|
|
* Returns true if we're connected, and thus GetComposedDoc() would return a
|
|
* non-null value.
|
|
*/
|
|
bool IsInComposedDoc() const { return GetBoolFlag(IsConnected); }
|
|
|
|
/**
|
|
* This method returns the owner document if the node is connected to it
|
|
* (as defined in the DOM spec), otherwise it returns null.
|
|
* In other words, returns non-null even in the case the node is in
|
|
* Shadow DOM, if there is a possibly shadow boundary crossing path from
|
|
* the node to its owner document.
|
|
*/
|
|
Document* GetComposedDoc() const {
|
|
return IsInComposedDoc() ? OwnerDoc() : nullptr;
|
|
}
|
|
|
|
/**
|
|
* Returns OwnerDoc() if the node is in uncomposed document and ShadowRoot if
|
|
* the node is in Shadow DOM and is in composed document.
|
|
*/
|
|
mozilla::dom::DocumentOrShadowRoot* GetUncomposedDocOrConnectedShadowRoot()
|
|
const;
|
|
|
|
/**
|
|
* To be called when reference count of the node drops to zero.
|
|
*/
|
|
void LastRelease();
|
|
|
|
/**
|
|
* The values returned by this function are the ones defined for
|
|
* Node.nodeType
|
|
*/
|
|
uint16_t NodeType() const { return mNodeInfo->NodeType(); }
|
|
const nsString& NodeName() const { return mNodeInfo->NodeName(); }
|
|
const nsString& LocalName() const { return mNodeInfo->LocalName(); }
|
|
|
|
/**
|
|
* Get the NodeInfo for this element
|
|
* @return the nodes node info
|
|
*/
|
|
inline mozilla::dom::NodeInfo* NodeInfo() const { return mNodeInfo; }
|
|
|
|
/**
|
|
* Called when we have been adopted, and the information of the
|
|
* node has been changed.
|
|
*
|
|
* The new document can be reached via OwnerDoc().
|
|
*
|
|
* If you override this method,
|
|
* please call up to the parent NodeInfoChanged.
|
|
*
|
|
* If you change this, change also the similar method in Link.
|
|
*/
|
|
virtual void NodeInfoChanged(Document* aOldDoc) {
|
|
#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
|
|
AssertInvariantsOnNodeInfoChange();
|
|
#endif
|
|
}
|
|
|
|
inline bool IsInNamespace(int32_t aNamespace) const {
|
|
return mNodeInfo->NamespaceID() == aNamespace;
|
|
}
|
|
|
|
/**
|
|
* Returns the DocGroup of the "node document" of this node.
|
|
*/
|
|
DocGroup* GetDocGroup() const;
|
|
|
|
/**
|
|
* Print a debugger friendly descriptor of this element. This will describe
|
|
* the position of this element in the document.
|
|
*/
|
|
friend std::ostream& operator<<(std::ostream& aStream, const nsINode& aNode);
|
|
|
|
protected:
|
|
// These 2 methods are useful for the recursive templates IsHTMLElement,
|
|
// IsSVGElement, etc.
|
|
inline bool IsNodeInternal() const { return false; }
|
|
|
|
template <typename First, typename... Args>
|
|
inline bool IsNodeInternal(First aFirst, Args... aArgs) const {
|
|
return mNodeInfo->Equals(aFirst) || IsNodeInternal(aArgs...);
|
|
}
|
|
|
|
public:
|
|
inline bool IsHTMLElement() const {
|
|
return IsElement() && IsInNamespace(kNameSpaceID_XHTML);
|
|
}
|
|
|
|
inline bool IsHTMLElement(const nsAtom* aTag) const {
|
|
return IsElement() && mNodeInfo->Equals(aTag, kNameSpaceID_XHTML);
|
|
}
|
|
|
|
template <typename First, typename... Args>
|
|
inline bool IsAnyOfHTMLElements(First aFirst, Args... aArgs) const {
|
|
return IsHTMLElement() && IsNodeInternal(aFirst, aArgs...);
|
|
}
|
|
|
|
inline bool IsSVGElement() const {
|
|
return IsElement() && IsInNamespace(kNameSpaceID_SVG);
|
|
}
|
|
|
|
inline bool IsSVGElement(const nsAtom* aTag) const {
|
|
return IsElement() && mNodeInfo->Equals(aTag, kNameSpaceID_SVG);
|
|
}
|
|
|
|
template <typename First, typename... Args>
|
|
inline bool IsAnyOfSVGElements(First aFirst, Args... aArgs) const {
|
|
return IsSVGElement() && IsNodeInternal(aFirst, aArgs...);
|
|
}
|
|
|
|
inline bool IsXULElement() const {
|
|
return IsElement() && IsInNamespace(kNameSpaceID_XUL);
|
|
}
|
|
|
|
inline bool IsXULElement(const nsAtom* aTag) const {
|
|
return IsElement() && mNodeInfo->Equals(aTag, kNameSpaceID_XUL);
|
|
}
|
|
|
|
template <typename First, typename... Args>
|
|
inline bool IsAnyOfXULElements(First aFirst, Args... aArgs) const {
|
|
return IsXULElement() && IsNodeInternal(aFirst, aArgs...);
|
|
}
|
|
|
|
inline bool IsMathMLElement() const {
|
|
return IsElement() && IsInNamespace(kNameSpaceID_MathML);
|
|
}
|
|
|
|
inline bool IsMathMLElement(const nsAtom* aTag) const {
|
|
return IsElement() && mNodeInfo->Equals(aTag, kNameSpaceID_MathML);
|
|
}
|
|
|
|
template <typename First, typename... Args>
|
|
inline bool IsAnyOfMathMLElements(First aFirst, Args... aArgs) const {
|
|
return IsMathMLElement() && IsNodeInternal(aFirst, aArgs...);
|
|
}
|
|
|
|
bool IsShadowRoot() const {
|
|
const bool isShadowRoot = IsInShadowTree() && !GetParentNode();
|
|
MOZ_ASSERT_IF(isShadowRoot, IsDocumentFragment());
|
|
return isShadowRoot;
|
|
}
|
|
|
|
bool IsHTMLHeadingElement() const {
|
|
return IsAnyOfHTMLElements(nsGkAtoms::h1, nsGkAtoms::h2, nsGkAtoms::h3,
|
|
nsGkAtoms::h4, nsGkAtoms::h5, nsGkAtoms::h6);
|
|
}
|
|
|
|
/**
|
|
* Insert a content node before another or at the end.
|
|
* This method handles calling BindToTree on the child appropriately.
|
|
*
|
|
* @param aKid the content to insert
|
|
* @param aBeforeThis an existing node. Use nullptr if you want to
|
|
* add aKid at the end.
|
|
* @param aNotify whether to notify the document (current document for
|
|
* nsIContent, and |this| for Document) that the insert has occurred
|
|
*
|
|
* @throws NS_ERROR_DOM_HIERARCHY_REQUEST_ERR if one attempts to have more
|
|
* than one element node as a child of a document. Doing this will also
|
|
* assert -- you shouldn't be doing it! Check with Document::GetRootElement()
|
|
* first if you're not sure. Apart from this one constraint, this doesn't do
|
|
* any checking on whether aKid is a valid child of |this|.
|
|
*
|
|
* @throws NS_ERROR_OUT_OF_MEMORY in some cases (from BindToTree).
|
|
*/
|
|
virtual nsresult InsertChildBefore(nsIContent* aKid, nsIContent* aBeforeThis,
|
|
bool aNotify);
|
|
|
|
/**
|
|
* Append a content node to the end of the child list. This method handles
|
|
* calling BindToTree on the child appropriately.
|
|
*
|
|
* @param aKid the content to append
|
|
* @param aNotify whether to notify the document (current document for
|
|
* nsIContent, and |this| for Document) that the append has occurred
|
|
*
|
|
* @throws NS_ERROR_DOM_HIERARCHY_REQUEST_ERR if one attempts to have more
|
|
* than one element node as a child of a document. Doing this will also
|
|
* assert -- you shouldn't be doing it! Check with Document::GetRootElement()
|
|
* first if you're not sure. Apart from this one constraint, this doesn't do
|
|
* any checking on whether aKid is a valid child of |this|.
|
|
*
|
|
* @throws NS_ERROR_OUT_OF_MEMORY in some cases (from BindToTree).
|
|
*/
|
|
nsresult AppendChildTo(nsIContent* aKid, bool aNotify) {
|
|
return InsertChildBefore(aKid, nullptr, aNotify);
|
|
}
|
|
|
|
/**
|
|
* Remove a child from this node. This method handles calling UnbindFromTree
|
|
* on the child appropriately.
|
|
*
|
|
* @param aKid the content to remove
|
|
* @param aNotify whether to notify the document (current document for
|
|
* nsIContent, and |this| for Document) that the remove has occurred
|
|
*/
|
|
virtual void RemoveChildNode(nsIContent* aKid, bool aNotify);
|
|
|
|
/**
|
|
* Get a property associated with this node.
|
|
*
|
|
* @param aPropertyName name of property to get.
|
|
* @param aStatus out parameter for storing resulting status.
|
|
* Set to NS_PROPTABLE_PROP_NOT_THERE if the property
|
|
* is not set.
|
|
* @return the property. Null if the property is not set
|
|
* (though a null return value does not imply the
|
|
* property was not set, i.e. it can be set to null).
|
|
*/
|
|
void* GetProperty(const nsAtom* aPropertyName,
|
|
nsresult* aStatus = nullptr) const;
|
|
|
|
/**
|
|
* Set a property to be associated with this node. This will overwrite an
|
|
* existing value if one exists. The existing value is destroyed using the
|
|
* destructor function given when that value was set.
|
|
*
|
|
* @param aPropertyName name of property to set.
|
|
* @param aValue new value of property.
|
|
* @param aDtor destructor function to be used when this property
|
|
* is destroyed.
|
|
* @param aTransfer if true the property will not be deleted when the
|
|
* ownerDocument of the node changes, if false it
|
|
* will be deleted.
|
|
*
|
|
* @return NS_PROPTABLE_PROP_OVERWRITTEN (success value) if the property
|
|
* was already set
|
|
* @throws NS_ERROR_OUT_OF_MEMORY if that occurs
|
|
*/
|
|
nsresult SetProperty(nsAtom* aPropertyName, void* aValue,
|
|
NSPropertyDtorFunc aDtor = nullptr,
|
|
bool aTransfer = false);
|
|
|
|
/**
|
|
* A generic destructor for property values allocated with new.
|
|
*/
|
|
template <class T>
|
|
static void DeleteProperty(void*, nsAtom*, void* aPropertyValue, void*) {
|
|
delete static_cast<T*>(aPropertyValue);
|
|
}
|
|
|
|
/**
|
|
* Removes a property associated with this node. The value is destroyed using
|
|
* the destruction function given when that value was set.
|
|
*
|
|
* @param aPropertyName name of property to destroy.
|
|
*/
|
|
void RemoveProperty(const nsAtom* aPropertyName);
|
|
|
|
/**
|
|
* Take a property associated with this node. The value will not be destroyed
|
|
* but rather returned. It is the caller's responsibility to destroy the value
|
|
* after that point.
|
|
*
|
|
* @param aPropertyName name of property to unset.
|
|
* @param aStatus out parameter for storing resulting status.
|
|
* Set to NS_PROPTABLE_PROP_NOT_THERE if the property
|
|
* is not set.
|
|
* @return the property. Null if the property is not set
|
|
* (though a null return value does not imply the
|
|
* property was not set, i.e. it can be set to null).
|
|
*/
|
|
void* TakeProperty(const nsAtom* aPropertyName, nsresult* aStatus = nullptr);
|
|
|
|
bool HasProperties() const { return HasFlag(NODE_HAS_PROPERTIES); }
|
|
|
|
/**
|
|
* Return the principal of this node. This is guaranteed to never be a null
|
|
* pointer.
|
|
*/
|
|
nsIPrincipal* NodePrincipal() const {
|
|
return mNodeInfo->NodeInfoManager()->DocumentPrincipal();
|
|
}
|
|
|
|
/**
|
|
* Return the CSP of this node's document, if any.
|
|
*/
|
|
nsIContentSecurityPolicy* GetCsp() const;
|
|
|
|
/**
|
|
* Get the parent nsIContent for this node.
|
|
* @return the parent, or null if no parent or the parent is not an nsIContent
|
|
*/
|
|
nsIContent* GetParent() const {
|
|
return MOZ_LIKELY(GetBoolFlag(ParentIsContent)) ? mParent->AsContent()
|
|
: nullptr;
|
|
}
|
|
|
|
/**
|
|
* Get the parent nsINode for this node. This can be either an nsIContent, a
|
|
* Document or an Attr.
|
|
* @return the parent node
|
|
*/
|
|
nsINode* GetParentNode() const { return mParent; }
|
|
|
|
nsINode* GetParentOrShadowHostNode() const;
|
|
|
|
enum FlattenedParentType { eNotForStyle, eForStyle };
|
|
|
|
/**
|
|
* Returns the node that is the parent of this node in the flattened
|
|
* tree. This differs from the normal parent if the node is filtered
|
|
* into an insertion point, or if the node is a direct child of a
|
|
* shadow root.
|
|
*
|
|
* @return the flattened tree parent
|
|
*/
|
|
inline nsINode* GetFlattenedTreeParentNode() const;
|
|
|
|
nsINode* GetFlattenedTreeParentNodeNonInline() const;
|
|
|
|
/**
|
|
* Like GetFlattenedTreeParentNode, but returns the document for any native
|
|
* anonymous content that was generated for ancestor frames of the document
|
|
* element's primary frame, such as scrollbar elements created by the root
|
|
* scroll frame.
|
|
*/
|
|
inline nsINode* GetFlattenedTreeParentNodeForStyle() const;
|
|
|
|
inline mozilla::dom::Element* GetFlattenedTreeParentElement() const;
|
|
inline mozilla::dom::Element* GetFlattenedTreeParentElementForStyle() const;
|
|
|
|
/**
|
|
* Get the parent nsINode for this node if it is an Element.
|
|
*
|
|
* Defined inline in Element.h
|
|
*
|
|
* @return the parent node
|
|
*/
|
|
inline mozilla::dom::Element* GetParentElement() const;
|
|
|
|
/**
|
|
* Get the parent Element of this node, traversing over a ShadowRoot
|
|
* to its host if necessary.
|
|
*/
|
|
mozilla::dom::Element* GetParentElementCrossingShadowRoot() const;
|
|
|
|
/**
|
|
* Get closest element node for the node. Meaning that if the node is an
|
|
* element node, returns itself. Otherwise, returns parent element or null.
|
|
*/
|
|
inline mozilla::dom::Element* GetAsElementOrParentElement() const;
|
|
|
|
/**
|
|
* Get the root of the subtree this node belongs to. This never returns
|
|
* null. It may return 'this' (e.g. for document nodes, and nodes that
|
|
* are the roots of disconnected subtrees).
|
|
*/
|
|
nsINode* SubtreeRoot() const;
|
|
|
|
/*
|
|
* Get context object's shadow-including root if options's composed is true,
|
|
* and context object's root otherwise.
|
|
*/
|
|
nsINode* GetRootNode(const mozilla::dom::GetRootNodeOptions& aOptions);
|
|
|
|
virtual mozilla::EventListenerManager* GetExistingListenerManager()
|
|
const override;
|
|
virtual mozilla::EventListenerManager* GetOrCreateListenerManager() override;
|
|
|
|
mozilla::Maybe<mozilla::dom::EventCallbackDebuggerNotificationType>
|
|
GetDebuggerNotificationType() const override {
|
|
return mozilla::Some(
|
|
mozilla::dom::EventCallbackDebuggerNotificationType::Node);
|
|
}
|
|
|
|
bool ComputeDefaultWantsUntrusted(mozilla::ErrorResult& aRv) final;
|
|
|
|
virtual bool IsApzAware() const override;
|
|
|
|
virtual nsPIDOMWindowOuter* GetOwnerGlobalForBindingsInternal() override;
|
|
virtual nsIGlobalObject* GetOwnerGlobal() const override;
|
|
|
|
using mozilla::dom::EventTarget::DispatchEvent;
|
|
bool DispatchEvent(mozilla::dom::Event& aEvent,
|
|
mozilla::dom::CallerType aCallerType,
|
|
mozilla::ErrorResult& aRv) override;
|
|
|
|
MOZ_CAN_RUN_SCRIPT
|
|
nsresult PostHandleEvent(mozilla::EventChainPostVisitor& aVisitor) override;
|
|
|
|
/**
|
|
* Adds a mutation observer to be notified when this node, or any of its
|
|
* descendants, are modified. The node will hold a weak reference to the
|
|
* observer, which means that it is the responsibility of the observer to
|
|
* remove itself in case it dies before the node. If an observer is added
|
|
* while observers are being notified, it may also be notified. In general,
|
|
* adding observers while inside a notification is not a good idea. An
|
|
* observer that is already observing the node must not be added without
|
|
* being removed first.
|
|
*
|
|
* For mutation observers that implement nsIAnimationObserver, use
|
|
* AddAnimationObserver instead.
|
|
*/
|
|
void AddMutationObserver(nsIMutationObserver* aMutationObserver) {
|
|
nsSlots* s = Slots();
|
|
NS_ASSERTION(s->mMutationObservers.IndexOf(aMutationObserver) ==
|
|
nsTArray<int>::NoIndex,
|
|
"Observer already in the list");
|
|
s->mMutationObservers.AppendElement(aMutationObserver);
|
|
}
|
|
|
|
/**
|
|
* Same as above, but only adds the observer if its not observing
|
|
* the node already.
|
|
*
|
|
* For mutation observers that implement nsIAnimationObserver, use
|
|
* AddAnimationObserverUnlessExists instead.
|
|
*/
|
|
void AddMutationObserverUnlessExists(nsIMutationObserver* aMutationObserver) {
|
|
nsSlots* s = Slots();
|
|
s->mMutationObservers.AppendElementUnlessExists(aMutationObserver);
|
|
}
|
|
|
|
/**
|
|
* Same as AddMutationObserver, but for nsIAnimationObservers. This
|
|
* additionally records on the document that animation observers have
|
|
* been registered, which is used to determine whether notifications
|
|
* must be fired when animations are added, removed or changed.
|
|
*/
|
|
void AddAnimationObserver(nsIAnimationObserver* aAnimationObserver);
|
|
|
|
/**
|
|
* Same as above, but only adds the observer if its not observing
|
|
* the node already.
|
|
*/
|
|
void AddAnimationObserverUnlessExists(
|
|
nsIAnimationObserver* aAnimationObserver);
|
|
|
|
/**
|
|
* Removes a mutation observer.
|
|
*/
|
|
void RemoveMutationObserver(nsIMutationObserver* aMutationObserver) {
|
|
nsSlots* s = GetExistingSlots();
|
|
if (s) {
|
|
s->mMutationObservers.RemoveElement(aMutationObserver);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Helper methods to access ancestor node(s) of type T.
|
|
* The implementations of the methods are in mozilla/dom/AncestorIterator.h.
|
|
*/
|
|
template <typename T>
|
|
inline mozilla::dom::AncestorsOfTypeIterator<T> AncestorsOfType() const;
|
|
|
|
template <typename T>
|
|
inline mozilla::dom::InclusiveAncestorsOfTypeIterator<T>
|
|
InclusiveAncestorsOfType() const;
|
|
|
|
template <typename T>
|
|
inline mozilla::dom::FlatTreeAncestorsOfTypeIterator<T>
|
|
FlatTreeAncestorsOfType() const;
|
|
|
|
template <typename T>
|
|
inline mozilla::dom::InclusiveFlatTreeAncestorsOfTypeIterator<T>
|
|
InclusiveFlatTreeAncestorsOfType() const;
|
|
|
|
template <typename T>
|
|
T* FirstAncestorOfType() const;
|
|
|
|
private:
|
|
/**
|
|
* Walks aNode, its attributes and, if aDeep is true, its descendant nodes.
|
|
* If aClone is true the nodes will be cloned. If aNewNodeInfoManager is
|
|
* not null, it is used to create new nodeinfos for the nodes. Also reparents
|
|
* the XPConnect wrappers for the nodes into aReparentScope if non-null.
|
|
*
|
|
* @param aNode Node to adopt/clone.
|
|
* @param aClone If true the node will be cloned and the cloned node will
|
|
* be returned.
|
|
* @param aDeep If true the function will be called recursively on
|
|
* descendants of the node
|
|
* @param aNewNodeInfoManager The nodeinfo manager to use to create new
|
|
* nodeinfos for aNode and its attributes and
|
|
* descendants. May be null if the nodeinfos
|
|
* shouldn't be changed.
|
|
* @param aReparentScope Scope into which wrappers should be reparented, or
|
|
* null if no reparenting should be done.
|
|
* @param aParent If aClone is true the cloned node will be appended to
|
|
* aParent's children. May be null. If not null then aNode
|
|
* must be an nsIContent.
|
|
* @param aError The error, if any.
|
|
*
|
|
* @return If aClone is true then the cloned node will be returned,
|
|
* unless an error occurred. In error conditions, null
|
|
* will be returned.
|
|
*/
|
|
static already_AddRefed<nsINode> CloneAndAdopt(
|
|
nsINode* aNode, bool aClone, bool aDeep,
|
|
nsNodeInfoManager* aNewNodeInfoManager,
|
|
JS::Handle<JSObject*> aReparentScope, nsINode* aParent,
|
|
mozilla::ErrorResult& aError);
|
|
|
|
public:
|
|
/**
|
|
* Walks the node, its attributes and descendant nodes. If aNewNodeInfoManager
|
|
* is not null, it is used to create new nodeinfos for the nodes. Also
|
|
* reparents the XPConnect wrappers for the nodes into aReparentScope if
|
|
* non-null.
|
|
*
|
|
* @param aNewNodeInfoManager The nodeinfo manager to use to create new
|
|
* nodeinfos for the node and its attributes and
|
|
* descendants. May be null if the nodeinfos
|
|
* shouldn't be changed.
|
|
* @param aReparentScope New scope for the wrappers, or null if no reparenting
|
|
* should be done.
|
|
* @param aError The error, if any.
|
|
*/
|
|
void Adopt(nsNodeInfoManager* aNewNodeInfoManager,
|
|
JS::Handle<JSObject*> aReparentScope,
|
|
mozilla::ErrorResult& aError);
|
|
|
|
/**
|
|
* Clones the node, its attributes and, if aDeep is true, its descendant nodes
|
|
* If aNewNodeInfoManager is not null, it is used to create new nodeinfos for
|
|
* the clones.
|
|
*
|
|
* @param aDeep If true the function will be called recursively on
|
|
* descendants of the node
|
|
* @param aNewNodeInfoManager The nodeinfo manager to use to create new
|
|
* nodeinfos for the node and its attributes and
|
|
* descendants. May be null if the nodeinfos
|
|
* shouldn't be changed.
|
|
* @param aError The error, if any.
|
|
*
|
|
* @return The newly created node. Null in error conditions.
|
|
*/
|
|
already_AddRefed<nsINode> Clone(bool aDeep,
|
|
nsNodeInfoManager* aNewNodeInfoManager,
|
|
mozilla::ErrorResult& aError);
|
|
|
|
/**
|
|
* Clones this node. This needs to be overriden by all node classes. aNodeInfo
|
|
* should be identical to this node's nodeInfo, except for the document which
|
|
* may be different. When cloning an element, all attributes of the element
|
|
* will be cloned. The children of the node will not be cloned.
|
|
*
|
|
* @param aNodeInfo the nodeinfo to use for the clone
|
|
* @param aResult the clone
|
|
*/
|
|
virtual nsresult Clone(mozilla::dom::NodeInfo*, nsINode** aResult) const = 0;
|
|
|
|
// This class can be extended by subclasses that wish to store more
|
|
// information in the slots.
|
|
class nsSlots {
|
|
public:
|
|
nsSlots();
|
|
|
|
// If needed we could remove the vtable pointer this dtor causes by
|
|
// putting a DestroySlots function on nsINode
|
|
virtual ~nsSlots();
|
|
|
|
virtual void Traverse(nsCycleCollectionTraversalCallback&);
|
|
virtual void Unlink();
|
|
|
|
/**
|
|
* A list of mutation observers
|
|
*/
|
|
nsAutoTObserverArray<nsIMutationObserver*, 1> mMutationObservers;
|
|
|
|
/**
|
|
* An object implementing NodeList for this content (childNodes)
|
|
* @see NodeList
|
|
* @see nsGenericHTMLElement::GetChildNodes
|
|
*/
|
|
RefPtr<nsAttrChildContentList> mChildNodes;
|
|
|
|
/**
|
|
* Weak reference to this node. This is cleared by the destructor of
|
|
* nsNodeWeakReference.
|
|
*/
|
|
nsNodeWeakReference* MOZ_NON_OWNING_REF mWeakReference;
|
|
|
|
/**
|
|
* A set of ranges which are in the selection and which have this node as
|
|
* their endpoints' closest common inclusive ancestor
|
|
* (https://dom.spec.whatwg.org/#concept-tree-inclusive-ancestor). This is
|
|
* a UniquePtr instead of just a LinkedList, because that prevents us from
|
|
* pushing DOMSlots up to the next allocation bucket size, at the cost of
|
|
* some complexity.
|
|
*/
|
|
mozilla::UniquePtr<mozilla::LinkedList<nsRange>>
|
|
mClosestCommonInclusiveAncestorRanges;
|
|
};
|
|
|
|
/**
|
|
* Functions for managing flags and slots
|
|
*/
|
|
#ifdef DEBUG
|
|
nsSlots* DebugGetSlots() { return Slots(); }
|
|
#endif
|
|
|
|
void SetFlags(FlagsType aFlagsToSet) {
|
|
NS_ASSERTION(
|
|
!(aFlagsToSet &
|
|
(NODE_IS_NATIVE_ANONYMOUS_ROOT | NODE_IS_IN_NATIVE_ANONYMOUS_SUBTREE |
|
|
NODE_DESCENDANTS_NEED_FRAMES | NODE_NEEDS_FRAME |
|
|
NODE_HAS_BEEN_IN_UA_WIDGET)) ||
|
|
IsContent(),
|
|
"Flag only permitted on nsIContent nodes");
|
|
nsWrapperCache::SetFlags(aFlagsToSet);
|
|
}
|
|
|
|
void UnsetFlags(FlagsType aFlagsToUnset) {
|
|
NS_ASSERTION(!(aFlagsToUnset & (NODE_HAS_BEEN_IN_UA_WIDGET |
|
|
NODE_IS_NATIVE_ANONYMOUS_ROOT)),
|
|
"Trying to unset write-only flags");
|
|
nsWrapperCache::UnsetFlags(aFlagsToUnset);
|
|
}
|
|
|
|
void SetEditableFlag(bool aEditable) {
|
|
if (aEditable) {
|
|
SetFlags(NODE_IS_EDITABLE);
|
|
} else {
|
|
UnsetFlags(NODE_IS_EDITABLE);
|
|
}
|
|
}
|
|
|
|
inline bool IsEditable() const;
|
|
|
|
/**
|
|
* Returns true if |this| or any of its ancestors is native anonymous.
|
|
*/
|
|
bool IsInNativeAnonymousSubtree() const {
|
|
return HasFlag(NODE_IS_IN_NATIVE_ANONYMOUS_SUBTREE);
|
|
}
|
|
|
|
/**
|
|
* If |this| or any ancestor is native anonymous, return the root of the
|
|
* native anonymous subtree. Note that in case of nested native anonymous
|
|
* content, this returns the innermost root, not the outermost.
|
|
*/
|
|
nsIContent* GetClosestNativeAnonymousSubtreeRoot() const {
|
|
if (!IsInNativeAnonymousSubtree()) {
|
|
return nullptr;
|
|
}
|
|
MOZ_ASSERT(IsContent(), "How did non-content end up in NAC?");
|
|
for (const nsINode* node = this; node; node = node->GetParentNode()) {
|
|
if (node->IsRootOfNativeAnonymousSubtree()) {
|
|
return const_cast<nsINode*>(node)->AsContent();
|
|
}
|
|
}
|
|
// FIXME(emilio): This should not happen, usually, but editor removes nodes
|
|
// in native anonymous subtrees, and we don't clean nodes from the current
|
|
// event content stack from ContentRemoved, so it can actually happen, see
|
|
// bug 1510208.
|
|
NS_WARNING("GetClosestNativeAnonymousSubtreeRoot on disconnected NAC!");
|
|
return nullptr;
|
|
}
|
|
|
|
/**
|
|
* If |this| or any ancestor is native anonymous, return the parent of the
|
|
* native anonymous subtree. Note that in case of nested native anonymous
|
|
* content, this returns the parent of the innermost root, not the outermost.
|
|
*/
|
|
nsIContent* GetClosestNativeAnonymousSubtreeRootParent() const {
|
|
const nsIContent* root = GetClosestNativeAnonymousSubtreeRoot();
|
|
if (!root) {
|
|
return nullptr;
|
|
}
|
|
// We could put this in nsIContentInlines.h or such to avoid this
|
|
// reinterpret_cast, but it doesn't seem worth it.
|
|
return reinterpret_cast<const nsINode*>(root)->GetParent();
|
|
}
|
|
|
|
/**
|
|
* Gets the root of the node tree for this content if it is in a shadow tree.
|
|
*/
|
|
mozilla::dom::ShadowRoot* GetContainingShadow() const;
|
|
/**
|
|
* Gets the shadow host if this content is in a shadow tree. That is, the host
|
|
* of |GetContainingShadow|, if its not null.
|
|
*
|
|
* @return The shadow host, if this is in shadow tree, or null.
|
|
*/
|
|
nsIContent* GetContainingShadowHost() const;
|
|
|
|
bool IsInSVGUseShadowTree() const {
|
|
return !!GetContainingSVGUseShadowHost();
|
|
}
|
|
|
|
mozilla::dom::SVGUseElement* GetContainingSVGUseShadowHost() const {
|
|
if (!IsInShadowTree()) {
|
|
return nullptr;
|
|
}
|
|
return DoGetContainingSVGUseShadowHost();
|
|
}
|
|
|
|
// Whether this node has ever been part of a UA widget shadow tree.
|
|
bool HasBeenInUAWidget() const { return HasFlag(NODE_HAS_BEEN_IN_UA_WIDGET); }
|
|
|
|
// True for native anonymous content and for content in UA widgets.
|
|
bool ChromeOnlyAccess() const {
|
|
return HasFlag(NODE_IS_IN_NATIVE_ANONYMOUS_SUBTREE |
|
|
NODE_HAS_BEEN_IN_UA_WIDGET);
|
|
}
|
|
|
|
const nsIContent* GetChromeOnlyAccessSubtreeRootParent() const {
|
|
if (!ChromeOnlyAccess()) {
|
|
return nullptr;
|
|
}
|
|
// We can have NAC in UA widgets, but not the other way around.
|
|
if (IsInNativeAnonymousSubtree()) {
|
|
return GetClosestNativeAnonymousSubtreeRootParent();
|
|
}
|
|
return GetContainingShadowHost();
|
|
}
|
|
|
|
bool IsInShadowTree() const { return HasFlag(NODE_IS_IN_SHADOW_TREE); }
|
|
|
|
/**
|
|
* Get whether this node is C++-generated anonymous content
|
|
* @see nsIAnonymousContentCreator
|
|
* @return whether this content is anonymous
|
|
*/
|
|
bool IsRootOfNativeAnonymousSubtree() const {
|
|
NS_ASSERTION(
|
|
!HasFlag(NODE_IS_NATIVE_ANONYMOUS_ROOT) || IsInNativeAnonymousSubtree(),
|
|
"Some flags seem to be missing!");
|
|
return HasFlag(NODE_IS_NATIVE_ANONYMOUS_ROOT);
|
|
}
|
|
|
|
// Whether this node is a UA Widget ShadowRoot.
|
|
inline bool IsUAWidget() const;
|
|
// Whether this node is currently in a UA Widget Shadow tree.
|
|
inline bool IsInUAWidget() const;
|
|
// Whether this node is the root of a ChromeOnlyAccess DOM subtree.
|
|
inline bool IsRootOfChromeAccessOnlySubtree() const;
|
|
|
|
/**
|
|
* Returns true if |this| node is the closest common inclusive ancestor
|
|
* (https://dom.spec.whatwg.org/#concept-tree-inclusive-ancestor) of the
|
|
* start/end nodes of a Range in a Selection or a descendant of such a common
|
|
* ancestor. This node is definitely not selected when |false| is returned,
|
|
* but it may or may not be selected when |true| is returned.
|
|
*/
|
|
bool IsMaybeSelected() const {
|
|
return IsDescendantOfClosestCommonInclusiveAncestorForRangeInSelection() ||
|
|
IsClosestCommonInclusiveAncestorForRangeInSelection();
|
|
}
|
|
|
|
/**
|
|
* Return true if any part of (this, aStartOffset) .. (this, aEndOffset)
|
|
* overlaps any nsRange in
|
|
* GetClosestCommonInclusiveAncestorForRangeInSelection ranges (i.e.
|
|
* where this is a descendant of a range's common inclusive ancestor node).
|
|
* If a nsRange starts in (this, aEndOffset) or if it ends in
|
|
* (this, aStartOffset) then it is non-overlapping and the result is false
|
|
* for that nsRange. Collapsed ranges always counts as non-overlapping.
|
|
*
|
|
* @param aStartOffset has to be less or equal to aEndOffset.
|
|
*/
|
|
bool IsSelected(uint32_t aStartOffset, uint32_t aEndOffset) const;
|
|
|
|
/**
|
|
* Get the root content of an editor. So, this node must be a descendant of
|
|
* an editor. Note that this should be only used for getting input or textarea
|
|
* editor's root content. This method doesn't support HTML editors.
|
|
*/
|
|
nsIContent* GetTextEditorRootContent(
|
|
mozilla::TextEditor** aTextEditor = nullptr);
|
|
|
|
/**
|
|
* Get the nearest selection root, ie. the node that will be selected if the
|
|
* user does "Select All" while the focus is in this node. Note that if this
|
|
* node is not in an editor, the result comes from the nsFrameSelection that
|
|
* is related to aPresShell, so the result might not be the ancestor of this
|
|
* node. Be aware that if this node and the computed selection limiter are
|
|
* not in same subtree, this returns the root content of the closeset subtree.
|
|
*/
|
|
nsIContent* GetSelectionRootContent(mozilla::PresShell* aPresShell);
|
|
|
|
nsINodeList* ChildNodes();
|
|
|
|
nsIContent* GetFirstChild() const { return mFirstChild; }
|
|
|
|
nsIContent* GetLastChild() const;
|
|
|
|
/**
|
|
* Implementation is in Document.h, because it needs to cast from
|
|
* Document* to nsINode*.
|
|
*/
|
|
Document* GetOwnerDocument() const;
|
|
|
|
void Normalize();
|
|
|
|
/**
|
|
* Get the base URI for any relative URIs within this piece of
|
|
* content. Generally, this is the document's base URI, but certain
|
|
* content carries a local base for backward compatibility.
|
|
*
|
|
* @return the base URI. May return null.
|
|
*/
|
|
virtual nsIURI* GetBaseURI(bool aTryUseXHRDocBaseURI = false) const = 0;
|
|
nsIURI* GetBaseURIObject() const;
|
|
|
|
/**
|
|
* Return true if the node may be apz aware. There are two cases. One is that
|
|
* the node is apz aware (such as HTMLInputElement with number type). The
|
|
* other is that the node has apz aware listeners. This is a non-virtual
|
|
* function which calls IsNodeApzAwareInternal only when the MayBeApzAware is
|
|
* set. We check the details in IsNodeApzAwareInternal which may be overriden
|
|
* by child classes
|
|
*/
|
|
bool IsNodeApzAware() const {
|
|
return NodeMayBeApzAware() ? IsNodeApzAwareInternal() : false;
|
|
}
|
|
|
|
/**
|
|
* Override this function and set the flag MayBeApzAware in case the node has
|
|
* to let APZC be aware of it. It's used when the node may handle the apz
|
|
* aware events and may do preventDefault to stop APZC to do default actions.
|
|
*
|
|
* For example, instead of scrolling page by APZ, we handle mouse wheel event
|
|
* in HTMLInputElement with number type as increasing / decreasing its value.
|
|
*/
|
|
virtual bool IsNodeApzAwareInternal() const;
|
|
|
|
void GetTextContent(nsAString& aTextContent, mozilla::OOMReporter& aError) {
|
|
GetTextContentInternal(aTextContent, aError);
|
|
}
|
|
void SetTextContent(const nsAString& aTextContent,
|
|
nsIPrincipal* aSubjectPrincipal,
|
|
mozilla::ErrorResult& aError) {
|
|
SetTextContentInternal(aTextContent, aSubjectPrincipal, aError);
|
|
}
|
|
void SetTextContent(const nsAString& aTextContent,
|
|
mozilla::ErrorResult& aError) {
|
|
SetTextContentInternal(aTextContent, nullptr, aError);
|
|
}
|
|
|
|
mozilla::dom::Element* QuerySelector(const nsAString& aSelector,
|
|
mozilla::ErrorResult& aResult);
|
|
already_AddRefed<nsINodeList> QuerySelectorAll(const nsAString& aSelector,
|
|
mozilla::ErrorResult& aResult);
|
|
|
|
protected:
|
|
// Document and ShadowRoot override this with its own (faster) version.
|
|
// This should really only be called for elements and document fragments.
|
|
mozilla::dom::Element* GetElementById(const nsAString& aId);
|
|
|
|
void AppendChildToChildList(nsIContent* aKid);
|
|
void InsertChildToChildList(nsIContent* aKid, nsIContent* aNextSibling);
|
|
void DisconnectChild(nsIContent* aKid);
|
|
|
|
public:
|
|
void LookupPrefix(const nsAString& aNamespace, nsAString& aResult);
|
|
bool IsDefaultNamespace(const nsAString& aNamespaceURI) {
|
|
nsAutoString defaultNamespace;
|
|
LookupNamespaceURI(EmptyString(), defaultNamespace);
|
|
return aNamespaceURI.Equals(defaultNamespace);
|
|
}
|
|
void LookupNamespaceURI(const nsAString& aNamespacePrefix,
|
|
nsAString& aNamespaceURI);
|
|
|
|
nsIContent* GetNextSibling() const { return mNextSibling; }
|
|
nsIContent* GetPreviousSibling() const;
|
|
|
|
/**
|
|
* Get the next node in the pre-order tree traversal of the DOM. If
|
|
* aRoot is non-null, then it must be an ancestor of |this|
|
|
* (possibly equal to |this|) and only nodes that are descendants of
|
|
* aRoot, not including aRoot itself, will be returned. Returns
|
|
* null if there are no more nodes to traverse.
|
|
*/
|
|
nsIContent* GetNextNode(const nsINode* aRoot = nullptr) const {
|
|
return GetNextNodeImpl(aRoot, false);
|
|
}
|
|
|
|
/**
|
|
* Get the next node in the pre-order tree traversal of the DOM but ignoring
|
|
* the children of this node. If aRoot is non-null, then it must be an
|
|
* ancestor of |this| (possibly equal to |this|) and only nodes that are
|
|
* descendants of aRoot, not including aRoot itself, will be returned.
|
|
* Returns null if there are no more nodes to traverse.
|
|
*/
|
|
nsIContent* GetNextNonChildNode(const nsINode* aRoot = nullptr) const {
|
|
return GetNextNodeImpl(aRoot, true);
|
|
}
|
|
|
|
/**
|
|
* Returns true if 'this' is either document or element or
|
|
* document fragment and aOther is a descendant in the same
|
|
* anonymous tree.
|
|
*/
|
|
bool Contains(const nsINode* aOther) const;
|
|
|
|
bool UnoptimizableCCNode() const;
|
|
|
|
private:
|
|
mozilla::dom::SVGUseElement* DoGetContainingSVGUseShadowHost() const;
|
|
|
|
nsIContent* GetNextNodeImpl(const nsINode* aRoot,
|
|
const bool aSkipChildren) const {
|
|
#ifdef DEBUG
|
|
if (aRoot) {
|
|
// TODO: perhaps nsINode::IsInclusiveDescendantOf could be used instead.
|
|
const nsINode* cur = this;
|
|
for (; cur; cur = cur->GetParentNode())
|
|
if (cur == aRoot) break;
|
|
NS_ASSERTION(cur, "aRoot not an ancestor of |this|?");
|
|
}
|
|
#endif
|
|
if (!aSkipChildren) {
|
|
nsIContent* kid = GetFirstChild();
|
|
if (kid) {
|
|
return kid;
|
|
}
|
|
}
|
|
if (this == aRoot) {
|
|
return nullptr;
|
|
}
|
|
const nsINode* cur = this;
|
|
while (1) {
|
|
nsIContent* next = cur->GetNextSibling();
|
|
if (next) {
|
|
return next;
|
|
}
|
|
nsINode* parent = cur->GetParentNode();
|
|
if (parent == aRoot) {
|
|
return nullptr;
|
|
}
|
|
cur = parent;
|
|
}
|
|
MOZ_ASSERT_UNREACHABLE("How did we get here?");
|
|
}
|
|
|
|
public:
|
|
/**
|
|
* Get the previous nsIContent in the pre-order tree traversal of the DOM. If
|
|
* aRoot is non-null, then it must be an ancestor of |this|
|
|
* (possibly equal to |this|) and only nsIContents that are descendants of
|
|
* aRoot, including aRoot itself, will be returned. Returns
|
|
* null if there are no more nsIContents to traverse.
|
|
*/
|
|
nsIContent* GetPreviousContent(const nsINode* aRoot = nullptr) const {
|
|
#ifdef DEBUG
|
|
if (aRoot) {
|
|
// TODO: perhaps nsINode::IsInclusiveDescendantOf could be used instead.
|
|
const nsINode* cur = this;
|
|
for (; cur; cur = cur->GetParentNode())
|
|
if (cur == aRoot) break;
|
|
NS_ASSERTION(cur, "aRoot not an ancestor of |this|?");
|
|
}
|
|
#endif
|
|
|
|
if (this == aRoot) {
|
|
return nullptr;
|
|
}
|
|
nsIContent* cur = this->GetParent();
|
|
nsIContent* iter = this->GetPreviousSibling();
|
|
while (iter) {
|
|
cur = iter;
|
|
iter = reinterpret_cast<nsINode*>(iter)->GetLastChild();
|
|
}
|
|
return cur;
|
|
}
|
|
|
|
/**
|
|
* Boolean flags
|
|
*/
|
|
private:
|
|
enum BooleanFlag {
|
|
// Set if we're being used from -moz-element
|
|
NodeHasRenderingObservers,
|
|
// Set if our parent chain (including this node itself) terminates
|
|
// in a document
|
|
IsInDocument,
|
|
// Set if we're part of the composed doc.
|
|
// https://dom.spec.whatwg.org/#connected
|
|
IsConnected,
|
|
// Set if mParent is an nsIContent
|
|
ParentIsContent,
|
|
// Set if this node is an Element
|
|
NodeIsElement,
|
|
// Set if the element has a non-empty id attribute. This can in rare
|
|
// cases lie for nsXMLElement, such as when the node has been moved between
|
|
// documents with different id mappings.
|
|
ElementHasID,
|
|
// Set if the element might have a class.
|
|
ElementMayHaveClass,
|
|
// Set if the element might have inline style.
|
|
ElementMayHaveStyle,
|
|
// Set if the element has a name attribute set.
|
|
ElementHasName,
|
|
// Set if the element has a part attribute set.
|
|
ElementHasPart,
|
|
// Set if the element might have a contenteditable attribute set.
|
|
ElementMayHaveContentEditableAttr,
|
|
// Set if the node is the closest common inclusive ancestor of the start/end
|
|
// nodes of a Range that is in a Selection.
|
|
NodeIsClosestCommonInclusiveAncestorForRangeInSelection,
|
|
// Set if the node is a descendant of a node with the above bit set.
|
|
NodeIsDescendantOfClosestCommonInclusiveAncestorForRangeInSelection,
|
|
// Set if CanSkipInCC check has been done for this subtree root.
|
|
NodeIsCCMarkedRoot,
|
|
// Maybe set if this node is in black subtree.
|
|
NodeIsCCBlackTree,
|
|
// Maybe set if the node is a root of a subtree
|
|
// which needs to be kept in the purple buffer.
|
|
NodeIsPurpleRoot,
|
|
// Set if the element has some style states locked
|
|
ElementHasLockedStyleStates,
|
|
// Set if element has pointer locked
|
|
ElementHasPointerLock,
|
|
// Set if the node may have DOMMutationObserver attached to it.
|
|
NodeMayHaveDOMMutationObserver,
|
|
// Set if node is Content
|
|
NodeIsContent,
|
|
// Set if the node has animations or transitions
|
|
ElementHasAnimations,
|
|
// Set if node has a dir attribute with a valid value (ltr, rtl, or auto).
|
|
// Note that we cannot compute this from the dir attribute event state
|
|
// flags, because we can't use those to distinguish
|
|
// <bdi dir="some-invalid-value"> and <bdi dir="auto">.
|
|
NodeHasValidDirAttribute,
|
|
// Set if the node has dir=auto and has a property pointing to the text
|
|
// node that determines its direction
|
|
NodeHasDirAutoSet,
|
|
// Set if the node is a text node descendant of a node with dir=auto
|
|
// and has a TextNodeDirectionalityMap property listing the elements whose
|
|
// direction it determines.
|
|
NodeHasTextNodeDirectionalityMap,
|
|
// Set if a node in the node's parent chain has dir=auto.
|
|
NodeAncestorHasDirAuto,
|
|
// Set if the node is handling a click.
|
|
NodeHandlingClick,
|
|
// Set if the element has a parser insertion mode other than "in body",
|
|
// per the HTML5 "Parse state" section.
|
|
ElementHasWeirdParserInsertionMode,
|
|
// Parser sets this flag if it has notified about the node.
|
|
ParserHasNotified,
|
|
// Sets if the node is apz aware or we have apz aware listeners.
|
|
MayBeApzAware,
|
|
// Set if the element might have any kind of anonymous content children,
|
|
// which would not be found through the element's children list.
|
|
ElementMayHaveAnonymousChildren,
|
|
// Set if element has CustomElementData.
|
|
ElementHasCustomElementData,
|
|
// Set if the element was created from prototype cache and
|
|
// its l10n attributes haven't been changed.
|
|
ElementCreatedFromPrototypeAndHasUnmodifiedL10n,
|
|
// Guard value
|
|
BooleanFlagCount
|
|
};
|
|
|
|
void SetBoolFlag(BooleanFlag name, bool value) {
|
|
static_assert(BooleanFlagCount <= 8 * sizeof(mBoolFlags),
|
|
"Too many boolean flags");
|
|
mBoolFlags = (mBoolFlags & ~(1 << name)) | (value << name);
|
|
}
|
|
|
|
void SetBoolFlag(BooleanFlag name) {
|
|
static_assert(BooleanFlagCount <= 8 * sizeof(mBoolFlags),
|
|
"Too many boolean flags");
|
|
mBoolFlags |= (1 << name);
|
|
}
|
|
|
|
void ClearBoolFlag(BooleanFlag name) {
|
|
static_assert(BooleanFlagCount <= 8 * sizeof(mBoolFlags),
|
|
"Too many boolean flags");
|
|
mBoolFlags &= ~(1 << name);
|
|
}
|
|
|
|
bool GetBoolFlag(BooleanFlag name) const {
|
|
static_assert(BooleanFlagCount <= 8 * sizeof(mBoolFlags),
|
|
"Too many boolean flags");
|
|
return mBoolFlags & (1 << name);
|
|
}
|
|
|
|
public:
|
|
bool HasRenderingObservers() const {
|
|
return GetBoolFlag(NodeHasRenderingObservers);
|
|
}
|
|
void SetHasRenderingObservers(bool aValue) {
|
|
SetBoolFlag(NodeHasRenderingObservers, aValue);
|
|
}
|
|
bool IsContent() const { return GetBoolFlag(NodeIsContent); }
|
|
bool HasID() const { return GetBoolFlag(ElementHasID); }
|
|
bool MayHaveClass() const { return GetBoolFlag(ElementMayHaveClass); }
|
|
void SetMayHaveClass() { SetBoolFlag(ElementMayHaveClass); }
|
|
bool MayHaveStyle() const { return GetBoolFlag(ElementMayHaveStyle); }
|
|
bool HasName() const { return GetBoolFlag(ElementHasName); }
|
|
bool HasPartAttribute() const { return GetBoolFlag(ElementHasPart); }
|
|
bool MayHaveContentEditableAttr() const {
|
|
return GetBoolFlag(ElementMayHaveContentEditableAttr);
|
|
}
|
|
/**
|
|
* https://dom.spec.whatwg.org/#concept-tree-inclusive-ancestor
|
|
*/
|
|
bool IsClosestCommonInclusiveAncestorForRangeInSelection() const {
|
|
return GetBoolFlag(NodeIsClosestCommonInclusiveAncestorForRangeInSelection);
|
|
}
|
|
/**
|
|
* https://dom.spec.whatwg.org/#concept-tree-inclusive-ancestor
|
|
*/
|
|
void SetClosestCommonInclusiveAncestorForRangeInSelection() {
|
|
SetBoolFlag(NodeIsClosestCommonInclusiveAncestorForRangeInSelection);
|
|
}
|
|
/**
|
|
* https://dom.spec.whatwg.org/#concept-tree-inclusive-ancestor
|
|
*/
|
|
void ClearClosestCommonInclusiveAncestorForRangeInSelection() {
|
|
ClearBoolFlag(NodeIsClosestCommonInclusiveAncestorForRangeInSelection);
|
|
}
|
|
/**
|
|
* https://dom.spec.whatwg.org/#concept-tree-inclusive-ancestor
|
|
*/
|
|
bool IsDescendantOfClosestCommonInclusiveAncestorForRangeInSelection() const {
|
|
return GetBoolFlag(
|
|
NodeIsDescendantOfClosestCommonInclusiveAncestorForRangeInSelection);
|
|
}
|
|
/**
|
|
* https://dom.spec.whatwg.org/#concept-tree-inclusive-ancestor
|
|
*/
|
|
void SetDescendantOfClosestCommonInclusiveAncestorForRangeInSelection() {
|
|
SetBoolFlag(
|
|
NodeIsDescendantOfClosestCommonInclusiveAncestorForRangeInSelection);
|
|
}
|
|
/**
|
|
* https://dom.spec.whatwg.org/#concept-tree-inclusive-ancestor
|
|
*/
|
|
void ClearDescendantOfClosestCommonInclusiveAncestorForRangeInSelection() {
|
|
ClearBoolFlag(
|
|
NodeIsDescendantOfClosestCommonInclusiveAncestorForRangeInSelection);
|
|
}
|
|
|
|
void SetCCMarkedRoot(bool aValue) { SetBoolFlag(NodeIsCCMarkedRoot, aValue); }
|
|
bool CCMarkedRoot() const { return GetBoolFlag(NodeIsCCMarkedRoot); }
|
|
void SetInCCBlackTree(bool aValue) { SetBoolFlag(NodeIsCCBlackTree, aValue); }
|
|
bool InCCBlackTree() const { return GetBoolFlag(NodeIsCCBlackTree); }
|
|
void SetIsPurpleRoot(bool aValue) { SetBoolFlag(NodeIsPurpleRoot, aValue); }
|
|
bool IsPurpleRoot() const { return GetBoolFlag(NodeIsPurpleRoot); }
|
|
bool MayHaveDOMMutationObserver() {
|
|
return GetBoolFlag(NodeMayHaveDOMMutationObserver);
|
|
}
|
|
void SetMayHaveDOMMutationObserver() {
|
|
SetBoolFlag(NodeMayHaveDOMMutationObserver, true);
|
|
}
|
|
bool HasListenerManager() { return HasFlag(NODE_HAS_LISTENERMANAGER); }
|
|
bool HasPointerLock() const { return GetBoolFlag(ElementHasPointerLock); }
|
|
void SetPointerLock() { SetBoolFlag(ElementHasPointerLock); }
|
|
void ClearPointerLock() { ClearBoolFlag(ElementHasPointerLock); }
|
|
bool MayHaveAnimations() const { return GetBoolFlag(ElementHasAnimations); }
|
|
void SetMayHaveAnimations() { SetBoolFlag(ElementHasAnimations); }
|
|
void SetHasValidDir() { SetBoolFlag(NodeHasValidDirAttribute); }
|
|
void ClearHasValidDir() { ClearBoolFlag(NodeHasValidDirAttribute); }
|
|
bool HasValidDir() const { return GetBoolFlag(NodeHasValidDirAttribute); }
|
|
void SetHasDirAutoSet() {
|
|
MOZ_ASSERT(NodeType() != TEXT_NODE, "SetHasDirAutoSet on text node");
|
|
SetBoolFlag(NodeHasDirAutoSet);
|
|
}
|
|
void ClearHasDirAutoSet() {
|
|
MOZ_ASSERT(NodeType() != TEXT_NODE, "ClearHasDirAutoSet on text node");
|
|
ClearBoolFlag(NodeHasDirAutoSet);
|
|
}
|
|
bool HasDirAutoSet() const { return GetBoolFlag(NodeHasDirAutoSet); }
|
|
void SetHasTextNodeDirectionalityMap() {
|
|
MOZ_ASSERT(NodeType() == TEXT_NODE,
|
|
"SetHasTextNodeDirectionalityMap on non-text node");
|
|
SetBoolFlag(NodeHasTextNodeDirectionalityMap);
|
|
}
|
|
void ClearHasTextNodeDirectionalityMap() {
|
|
MOZ_ASSERT(NodeType() == TEXT_NODE,
|
|
"ClearHasTextNodeDirectionalityMap on non-text node");
|
|
ClearBoolFlag(NodeHasTextNodeDirectionalityMap);
|
|
}
|
|
bool HasTextNodeDirectionalityMap() const {
|
|
MOZ_ASSERT(NodeType() == TEXT_NODE,
|
|
"HasTextNodeDirectionalityMap on non-text node");
|
|
return GetBoolFlag(NodeHasTextNodeDirectionalityMap);
|
|
}
|
|
|
|
void SetAncestorHasDirAuto() { SetBoolFlag(NodeAncestorHasDirAuto); }
|
|
void ClearAncestorHasDirAuto() { ClearBoolFlag(NodeAncestorHasDirAuto); }
|
|
bool AncestorHasDirAuto() const {
|
|
return GetBoolFlag(NodeAncestorHasDirAuto);
|
|
}
|
|
|
|
// Implemented in nsIContentInlines.h.
|
|
inline bool NodeOrAncestorHasDirAuto() const;
|
|
|
|
void SetParserHasNotified() { SetBoolFlag(ParserHasNotified); };
|
|
bool HasParserNotified() { return GetBoolFlag(ParserHasNotified); }
|
|
|
|
void SetMayBeApzAware() { SetBoolFlag(MayBeApzAware); }
|
|
bool NodeMayBeApzAware() const { return GetBoolFlag(MayBeApzAware); }
|
|
|
|
void SetMayHaveAnonymousChildren() {
|
|
SetBoolFlag(ElementMayHaveAnonymousChildren);
|
|
}
|
|
bool MayHaveAnonymousChildren() const {
|
|
return GetBoolFlag(ElementMayHaveAnonymousChildren);
|
|
}
|
|
|
|
void SetHasCustomElementData() { SetBoolFlag(ElementHasCustomElementData); }
|
|
bool HasCustomElementData() const {
|
|
return GetBoolFlag(ElementHasCustomElementData);
|
|
}
|
|
|
|
void SetElementCreatedFromPrototypeAndHasUnmodifiedL10n() {
|
|
SetBoolFlag(ElementCreatedFromPrototypeAndHasUnmodifiedL10n);
|
|
}
|
|
bool HasElementCreatedFromPrototypeAndHasUnmodifiedL10n() {
|
|
return GetBoolFlag(ElementCreatedFromPrototypeAndHasUnmodifiedL10n);
|
|
}
|
|
void ClearElementCreatedFromPrototypeAndHasUnmodifiedL10n() {
|
|
ClearBoolFlag(ElementCreatedFromPrototypeAndHasUnmodifiedL10n);
|
|
}
|
|
|
|
protected:
|
|
void SetParentIsContent(bool aValue) { SetBoolFlag(ParentIsContent, aValue); }
|
|
void SetIsInDocument() { SetBoolFlag(IsInDocument); }
|
|
void ClearInDocument() { ClearBoolFlag(IsInDocument); }
|
|
void SetIsConnected(bool aConnected) { SetBoolFlag(IsConnected, aConnected); }
|
|
void SetNodeIsContent() { SetBoolFlag(NodeIsContent); }
|
|
void SetIsElement() { SetBoolFlag(NodeIsElement); }
|
|
void SetHasID() { SetBoolFlag(ElementHasID); }
|
|
void ClearHasID() { ClearBoolFlag(ElementHasID); }
|
|
void SetMayHaveStyle() { SetBoolFlag(ElementMayHaveStyle); }
|
|
void SetHasName() { SetBoolFlag(ElementHasName); }
|
|
void ClearHasName() { ClearBoolFlag(ElementHasName); }
|
|
void SetHasPartAttribute(bool aPart) { SetBoolFlag(ElementHasPart, aPart); }
|
|
void SetMayHaveContentEditableAttr() {
|
|
SetBoolFlag(ElementMayHaveContentEditableAttr);
|
|
}
|
|
void SetHasLockedStyleStates() { SetBoolFlag(ElementHasLockedStyleStates); }
|
|
void ClearHasLockedStyleStates() {
|
|
ClearBoolFlag(ElementHasLockedStyleStates);
|
|
}
|
|
bool HasLockedStyleStates() const {
|
|
return GetBoolFlag(ElementHasLockedStyleStates);
|
|
}
|
|
void SetHasWeirdParserInsertionMode() {
|
|
SetBoolFlag(ElementHasWeirdParserInsertionMode);
|
|
}
|
|
bool HasWeirdParserInsertionMode() const {
|
|
return GetBoolFlag(ElementHasWeirdParserInsertionMode);
|
|
}
|
|
bool HandlingClick() const { return GetBoolFlag(NodeHandlingClick); }
|
|
void SetHandlingClick() { SetBoolFlag(NodeHandlingClick); }
|
|
void ClearHandlingClick() { ClearBoolFlag(NodeHandlingClick); }
|
|
|
|
void SetSubtreeRootPointer(nsINode* aSubtreeRoot) {
|
|
NS_ASSERTION(aSubtreeRoot, "aSubtreeRoot can never be null!");
|
|
NS_ASSERTION(!(IsContent() && IsInUncomposedDoc()) && !IsInShadowTree(),
|
|
"Shouldn't be here!");
|
|
mSubtreeRoot = aSubtreeRoot;
|
|
}
|
|
|
|
void ClearSubtreeRootPointer() { mSubtreeRoot = nullptr; }
|
|
|
|
public:
|
|
// Makes nsINode object to keep aObject alive.
|
|
void BindObject(nsISupports* aObject);
|
|
// After calling UnbindObject nsINode object doesn't keep
|
|
// aObject alive anymore.
|
|
void UnbindObject(nsISupports* aObject);
|
|
|
|
void GenerateXPath(nsAString& aResult);
|
|
|
|
already_AddRefed<mozilla::dom::AccessibleNode> GetAccessibleNode();
|
|
|
|
/**
|
|
* Returns the length of this node, as specified at
|
|
* <http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#concept-node-length>
|
|
*/
|
|
uint32_t Length() const;
|
|
|
|
void GetNodeName(mozilla::dom::DOMString& aNodeName) {
|
|
const nsString& nodeName = NodeName();
|
|
aNodeName.SetKnownLiveString(nodeName);
|
|
}
|
|
MOZ_MUST_USE nsresult GetBaseURI(nsAString& aBaseURI) const;
|
|
// Return the base URI for the document.
|
|
// The returned value may differ if the document is loaded via XHR, and
|
|
// when accessed from chrome privileged script and
|
|
// from content privileged script for compatibility.
|
|
void GetBaseURIFromJS(nsAString& aBaseURI, CallerType aCallerType,
|
|
ErrorResult& aRv) const;
|
|
bool HasChildNodes() const { return HasChildren(); }
|
|
|
|
// See nsContentUtils::PositionIsBefore for aThisIndex and aOtherIndex usage.
|
|
uint16_t CompareDocumentPosition(nsINode& aOther,
|
|
int32_t* aThisIndex = nullptr,
|
|
int32_t* aOtherIndex = nullptr) const;
|
|
void GetNodeValue(nsAString& aNodeValue) { GetNodeValueInternal(aNodeValue); }
|
|
void SetNodeValue(const nsAString& aNodeValue, mozilla::ErrorResult& aError) {
|
|
SetNodeValueInternal(aNodeValue, aError);
|
|
}
|
|
virtual void GetNodeValueInternal(nsAString& aNodeValue);
|
|
virtual void SetNodeValueInternal(const nsAString& aNodeValue,
|
|
mozilla::ErrorResult& aError) {
|
|
// The DOM spec says that when nodeValue is defined to be null "setting it
|
|
// has no effect", so we don't throw an exception.
|
|
}
|
|
void EnsurePreInsertionValidity(nsINode& aNewChild, nsINode* aRefChild,
|
|
mozilla::ErrorResult& aError);
|
|
nsINode* InsertBefore(nsINode& aNode, nsINode* aChild,
|
|
mozilla::ErrorResult& aError) {
|
|
return ReplaceOrInsertBefore(false, &aNode, aChild, aError);
|
|
}
|
|
nsINode* AppendChild(nsINode& aNode, mozilla::ErrorResult& aError) {
|
|
return InsertBefore(aNode, nullptr, aError);
|
|
}
|
|
nsINode* ReplaceChild(nsINode& aNode, nsINode& aChild,
|
|
mozilla::ErrorResult& aError) {
|
|
return ReplaceOrInsertBefore(true, &aNode, &aChild, aError);
|
|
}
|
|
nsINode* RemoveChild(nsINode& aChild, mozilla::ErrorResult& aError);
|
|
already_AddRefed<nsINode> CloneNode(bool aDeep, mozilla::ErrorResult& aError);
|
|
bool IsSameNode(nsINode* aNode);
|
|
bool IsEqualNode(nsINode* aNode);
|
|
void GetNamespaceURI(nsAString& aNamespaceURI) const {
|
|
mNodeInfo->GetNamespaceURI(aNamespaceURI);
|
|
}
|
|
#ifdef MOZILLA_INTERNAL_API
|
|
void GetPrefix(nsAString& aPrefix) { mNodeInfo->GetPrefix(aPrefix); }
|
|
#endif
|
|
void GetLocalName(mozilla::dom::DOMString& aLocalName) const {
|
|
const nsString& localName = LocalName();
|
|
aLocalName.SetKnownLiveString(localName);
|
|
}
|
|
|
|
nsDOMAttributeMap* GetAttributes();
|
|
|
|
// Helper method to remove this node from its parent. This is not exposed
|
|
// through WebIDL.
|
|
// Only call this if the node has a parent node.
|
|
nsresult RemoveFromParent() {
|
|
nsINode* parent = GetParentNode();
|
|
mozilla::ErrorResult rv;
|
|
parent->RemoveChild(*this, rv);
|
|
return rv.StealNSResult();
|
|
}
|
|
|
|
// ChildNode methods
|
|
inline mozilla::dom::Element* GetPreviousElementSibling() const;
|
|
inline mozilla::dom::Element* GetNextElementSibling() const;
|
|
|
|
MOZ_CAN_RUN_SCRIPT void Before(const Sequence<OwningNodeOrString>& aNodes,
|
|
ErrorResult& aRv);
|
|
MOZ_CAN_RUN_SCRIPT void After(const Sequence<OwningNodeOrString>& aNodes,
|
|
ErrorResult& aRv);
|
|
MOZ_CAN_RUN_SCRIPT void ReplaceWith(
|
|
const Sequence<OwningNodeOrString>& aNodes, ErrorResult& aRv);
|
|
/**
|
|
* Remove this node from its parent, if any.
|
|
*/
|
|
void Remove();
|
|
|
|
// ParentNode methods
|
|
mozilla::dom::Element* GetFirstElementChild() const;
|
|
mozilla::dom::Element* GetLastElementChild() const;
|
|
|
|
already_AddRefed<nsIHTMLCollection> GetElementsByAttribute(
|
|
const nsAString& aAttribute, const nsAString& aValue);
|
|
already_AddRefed<nsIHTMLCollection> GetElementsByAttributeNS(
|
|
const nsAString& aNamespaceURI, const nsAString& aAttribute,
|
|
const nsAString& aValue, ErrorResult& aRv);
|
|
|
|
MOZ_CAN_RUN_SCRIPT void Prepend(const Sequence<OwningNodeOrString>& aNodes,
|
|
ErrorResult& aRv);
|
|
MOZ_CAN_RUN_SCRIPT void Append(const Sequence<OwningNodeOrString>& aNodes,
|
|
ErrorResult& aRv);
|
|
MOZ_CAN_RUN_SCRIPT void ReplaceChildren(
|
|
const Sequence<OwningNodeOrString>& aNodes, ErrorResult& aRv);
|
|
|
|
void GetBoxQuads(const BoxQuadOptions& aOptions,
|
|
nsTArray<RefPtr<DOMQuad>>& aResult, CallerType aCallerType,
|
|
ErrorResult& aRv);
|
|
|
|
void GetBoxQuadsFromWindowOrigin(const BoxQuadOptions& aOptions,
|
|
nsTArray<RefPtr<DOMQuad>>& aResult,
|
|
ErrorResult& aRv);
|
|
|
|
already_AddRefed<DOMQuad> ConvertQuadFromNode(
|
|
DOMQuad& aQuad, const TextOrElementOrDocument& aFrom,
|
|
const ConvertCoordinateOptions& aOptions, CallerType aCallerType,
|
|
ErrorResult& aRv);
|
|
already_AddRefed<DOMQuad> ConvertRectFromNode(
|
|
DOMRectReadOnly& aRect, const TextOrElementOrDocument& aFrom,
|
|
const ConvertCoordinateOptions& aOptions, CallerType aCallerType,
|
|
ErrorResult& aRv);
|
|
already_AddRefed<DOMPoint> ConvertPointFromNode(
|
|
const DOMPointInit& aPoint, const TextOrElementOrDocument& aFrom,
|
|
const ConvertCoordinateOptions& aOptions, CallerType aCallerType,
|
|
ErrorResult& aRv);
|
|
|
|
/**
|
|
* See nsSlots::mClosestCommonInclusiveAncestorRanges.
|
|
*/
|
|
const mozilla::LinkedList<nsRange>*
|
|
GetExistingClosestCommonInclusiveAncestorRanges() const {
|
|
if (!HasSlots()) {
|
|
return nullptr;
|
|
}
|
|
return GetExistingSlots()->mClosestCommonInclusiveAncestorRanges.get();
|
|
}
|
|
|
|
/**
|
|
* See nsSlots::mClosestCommonInclusiveAncestorRanges.
|
|
*/
|
|
mozilla::LinkedList<nsRange>*
|
|
GetExistingClosestCommonInclusiveAncestorRanges() {
|
|
if (!HasSlots()) {
|
|
return nullptr;
|
|
}
|
|
return GetExistingSlots()->mClosestCommonInclusiveAncestorRanges.get();
|
|
}
|
|
|
|
/**
|
|
* See nsSlots::mClosestCommonInclusiveAncestorRanges.
|
|
*/
|
|
mozilla::UniquePtr<mozilla::LinkedList<nsRange>>&
|
|
GetClosestCommonInclusiveAncestorRangesPtr() {
|
|
return Slots()->mClosestCommonInclusiveAncestorRanges;
|
|
}
|
|
|
|
nsIWeakReference* GetExistingWeakReference() {
|
|
return HasSlots() ? GetExistingSlots()->mWeakReference : nullptr;
|
|
}
|
|
|
|
protected:
|
|
// Override this function to create a custom slots class.
|
|
// Must not return null.
|
|
virtual nsINode::nsSlots* CreateSlots();
|
|
|
|
bool HasSlots() const { return mSlots != nullptr; }
|
|
|
|
nsSlots* GetExistingSlots() const { return mSlots; }
|
|
|
|
nsSlots* Slots() {
|
|
if (!HasSlots()) {
|
|
mSlots = CreateSlots();
|
|
MOZ_ASSERT(mSlots);
|
|
}
|
|
return GetExistingSlots();
|
|
}
|
|
|
|
nsAutoTObserverArray<nsIMutationObserver*, 1>* GetMutationObservers() {
|
|
return HasSlots() ? &GetExistingSlots()->mMutationObservers : nullptr;
|
|
}
|
|
|
|
/**
|
|
* Invalidate cached child array inside mChildNodes
|
|
* of type nsParentNodeChildContentList.
|
|
*/
|
|
void InvalidateChildNodes();
|
|
|
|
virtual void GetTextContentInternal(nsAString& aTextContent,
|
|
mozilla::OOMReporter& aError);
|
|
virtual void SetTextContentInternal(const nsAString& aTextContent,
|
|
nsIPrincipal* aSubjectPrincipal,
|
|
mozilla::ErrorResult& aError) {}
|
|
|
|
void EnsurePreInsertionValidity1(mozilla::ErrorResult& aError);
|
|
void EnsurePreInsertionValidity2(bool aReplace, nsINode& aNewChild,
|
|
nsINode* aRefChild,
|
|
mozilla::ErrorResult& aError);
|
|
nsINode* ReplaceOrInsertBefore(bool aReplace, nsINode* aNewChild,
|
|
nsINode* aRefChild,
|
|
mozilla::ErrorResult& aError);
|
|
|
|
/**
|
|
* Returns the Element that should be used for resolving namespaces
|
|
* on this node (ie the ownerElement for attributes, the documentElement for
|
|
* documents, the node itself for elements and for other nodes the parentNode
|
|
* if it is an element).
|
|
*/
|
|
virtual mozilla::dom::Element* GetNameSpaceElement() = 0;
|
|
|
|
/**
|
|
* Parse the given selector string into a servo SelectorList.
|
|
*
|
|
* Never returns null if aRv is not failing.
|
|
*
|
|
* Note that the selector list returned here is owned by the owner doc's
|
|
* selector cache.
|
|
*/
|
|
const RawServoSelectorList* ParseSelectorList(
|
|
const nsAString& aSelectorString, mozilla::ErrorResult&);
|
|
|
|
public:
|
|
/* Event stuff that documents and elements share.
|
|
|
|
Note that we include DOCUMENT_ONLY_EVENT events here so that we
|
|
can forward all the document stuff to this implementation.
|
|
*/
|
|
#define EVENT(name_, id_, type_, struct_) \
|
|
mozilla::dom::EventHandlerNonNull* GetOn##name_() { \
|
|
return GetEventHandler(nsGkAtoms::on##name_); \
|
|
} \
|
|
void SetOn##name_(mozilla::dom::EventHandlerNonNull* handler) { \
|
|
SetEventHandler(nsGkAtoms::on##name_, handler); \
|
|
}
|
|
#define TOUCH_EVENT EVENT
|
|
#define DOCUMENT_ONLY_EVENT EVENT
|
|
#include "mozilla/EventNameList.h"
|
|
#undef DOCUMENT_ONLY_EVENT
|
|
#undef TOUCH_EVENT
|
|
#undef EVENT
|
|
|
|
protected:
|
|
static bool Traverse(nsINode* tmp, nsCycleCollectionTraversalCallback& cb);
|
|
static void Unlink(nsINode* tmp);
|
|
|
|
RefPtr<mozilla::dom::NodeInfo> mNodeInfo;
|
|
|
|
// mParent is an owning ref most of the time, except for the case of document
|
|
// nodes, so it cannot be represented by nsCOMPtr, so mark is as
|
|
// MOZ_OWNING_REF.
|
|
nsINode* MOZ_OWNING_REF mParent;
|
|
|
|
private:
|
|
#ifndef BOOL_FLAGS_ON_WRAPPER_CACHE
|
|
// Boolean flags.
|
|
uint32_t mBoolFlags;
|
|
#endif
|
|
|
|
// NOTE, there are 32 bits left here, at least in 64 bit builds.
|
|
|
|
uint32_t mChildCount;
|
|
|
|
protected:
|
|
// mNextSibling and mFirstChild are strong references while
|
|
// mPreviousOrLastSibling is a weak ref. |mFirstChild->mPreviousOrLastSibling|
|
|
// points to the last child node.
|
|
nsCOMPtr<nsIContent> mFirstChild;
|
|
nsCOMPtr<nsIContent> mNextSibling;
|
|
nsIContent* MOZ_NON_OWNING_REF mPreviousOrLastSibling;
|
|
|
|
union {
|
|
// Pointer to our primary frame. Might be null.
|
|
nsIFrame* mPrimaryFrame;
|
|
|
|
// Pointer to the root of our subtree. Might be null.
|
|
// This reference is non-owning and safe, since it either points to the
|
|
// object itself, or is reset by ClearSubtreeRootPointer.
|
|
nsINode* MOZ_NON_OWNING_REF mSubtreeRoot;
|
|
};
|
|
|
|
// Storage for more members that are usually not needed; allocated lazily.
|
|
nsSlots* mSlots;
|
|
};
|
|
|
|
// Useful inline function for getting a node given an nsIContent and a Document.
|
|
// Returns the first argument cast to nsINode if it is non-null, otherwise
|
|
// returns the second (which may be null). We use type variables instead of
|
|
// nsIContent* and Document* because the actual types must be
|
|
// known for the cast to work.
|
|
template <class C, class D>
|
|
inline nsINode* NODE_FROM(C& aContent, D& aDocument) {
|
|
if (aContent) return static_cast<nsINode*>(aContent);
|
|
return static_cast<nsINode*>(aDocument);
|
|
}
|
|
|
|
NS_DEFINE_STATIC_IID_ACCESSOR(nsINode, NS_INODE_IID)
|
|
|
|
inline nsISupports* ToSupports(nsINode* aPointer) { return aPointer; }
|
|
|
|
// Some checks are faster to do on nsIContent or Element than on
|
|
// nsINode, so spit out FromNode versions taking those types too.
|
|
#define NS_IMPL_FROMNODE_GENERIC(_class, _check, _const) \
|
|
template <typename T> \
|
|
static auto FromNode(_const T& aNode) \
|
|
->decltype(static_cast<_const _class*>(&aNode)) { \
|
|
return aNode._check ? static_cast<_const _class*>(&aNode) : nullptr; \
|
|
} \
|
|
template <typename T> \
|
|
static _const _class* FromNode(_const T* aNode) { \
|
|
return FromNode(*aNode); \
|
|
} \
|
|
template <typename T> \
|
|
static _const _class* FromNodeOrNull(_const T* aNode) { \
|
|
return aNode ? FromNode(*aNode) : nullptr; \
|
|
}
|
|
|
|
#define NS_IMPL_FROMNODE_HELPER(_class, _check) \
|
|
NS_IMPL_FROMNODE_GENERIC(_class, _check, ) \
|
|
NS_IMPL_FROMNODE_GENERIC(_class, _check, const) \
|
|
\
|
|
template <typename T> \
|
|
static _class* FromNode(T&& aNode) { \
|
|
/* We need the double-cast in case aNode is a smartptr. Those */ \
|
|
/* can cast to superclasses of the type they're templated on, */ \
|
|
/* but not directly to subclasses. */ \
|
|
return aNode->_check ? static_cast<_class*>(static_cast<nsINode*>(aNode)) \
|
|
: nullptr; \
|
|
} \
|
|
template <typename T> \
|
|
static _class* FromNodeOrNull(T&& aNode) { \
|
|
return aNode ? FromNode(aNode) : nullptr; \
|
|
}
|
|
|
|
#define NS_IMPL_FROMNODE(_class, _nsid) \
|
|
NS_IMPL_FROMNODE_HELPER(_class, IsInNamespace(_nsid))
|
|
|
|
#define NS_IMPL_FROMNODE_WITH_TAG(_class, _nsid, _tag) \
|
|
NS_IMPL_FROMNODE_HELPER(_class, NodeInfo()->Equals(nsGkAtoms::_tag, _nsid))
|
|
|
|
#define NS_IMPL_FROMNODE_HTML_WITH_TAG(_class, _tag) \
|
|
NS_IMPL_FROMNODE_WITH_TAG(_class, kNameSpaceID_XHTML, _tag)
|
|
|
|
#endif /* nsINode_h___ */
|