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content/base/public/Element.h@97036ab72558 (annotated)

content/base/public/Element.h

Tue, 06 Jan 2015 21:39:09 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Tue, 06 Jan 2015 21:39:09 +0100

branch

TOR_BUG_9701

changeset 8

97036ab72558

permissions

-rw-r--r--

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

michael@0	1	/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0	2	* vim: sw=2 ts=2 et :
michael@0	3	* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	4	* License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0	5	* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0	6
michael@0	7	/*
michael@0	8	* Base class for all element classes; this provides an implementation
michael@0	9	* of DOM Core's nsIDOMElement, implements nsIContent, provides
michael@0	10	* utility methods for subclasses, and so forth.
michael@0	11	*/
michael@0	12
michael@0	13	#ifndef mozilla_dom_Element_h__
michael@0	14	#define mozilla_dom_Element_h__
michael@0	15
michael@0	16	#include "mozilla/dom/FragmentOrElement.h" // for base class
michael@0	17	#include "nsChangeHint.h" // for enum
michael@0	18	#include "mozilla/EventStates.h" // for member
michael@0	19	#include "mozilla/dom/DirectionalityUtils.h"
michael@0	20	#include "nsIDOMElement.h"
michael@0	21	#include "nsILinkHandler.h"
michael@0	22	#include "nsNodeUtils.h"
michael@0	23	#include "nsAttrAndChildArray.h"
michael@0	24	#include "mozFlushType.h"
michael@0	25	#include "nsDOMAttributeMap.h"
michael@0	26	#include "nsIDOMXPathNSResolver.h"
michael@0	27	#include "nsPresContext.h"
michael@0	28	#include "nsDOMClassInfoID.h" // DOMCI_DATA
michael@0	29	#include "mozilla/CORSMode.h"
michael@0	30	#include "mozilla/Attributes.h"
michael@0	31	#include "nsIScrollableFrame.h"
michael@0	32	#include "mozilla/dom/Attr.h"
michael@0	33	#include "nsISMILAttr.h"
michael@0	34	#include "mozilla/dom/DOMRect.h"
michael@0	35	#include "nsAttrValue.h"
michael@0	36	#include "mozilla/EventForwards.h"
michael@0	37	#include "mozilla/dom/BindingDeclarations.h"
michael@0	38	#include "Units.h"
michael@0	39
michael@0	40	class nsIDOMEventListener;
michael@0	41	class nsIFrame;
michael@0	42	class nsIDOMMozNamedAttrMap;
michael@0	43	class nsIDOMCSSStyleDeclaration;
michael@0	44	class nsIURI;
michael@0	45	class nsINodeInfo;
michael@0	46	class nsIControllers;
michael@0	47	class nsEventChainVisitor;
michael@0	48	class nsIScrollableFrame;
michael@0	49	class nsAttrValueOrString;
michael@0	50	class ContentUnbinder;
michael@0	51	class nsContentList;
michael@0	52	class nsDOMTokenList;
michael@0	53	struct nsRect;
michael@0	54	class nsFocusManager;
michael@0	55	class nsGlobalWindow;
michael@0	56	class nsICSSDeclaration;
michael@0	57	class nsISMILAttr;
michael@0	58
michael@0	59	already_AddRefed<nsContentList>
michael@0	60	NS_GetContentList(nsINode* aRootNode,
michael@0	61	int32_t aMatchNameSpaceId,
michael@0	62	const nsAString& aTagname);
michael@0	63
michael@0	64	#define ELEMENT_FLAG_BIT(n_) NODE_FLAG_BIT(NODE_TYPE_SPECIFIC_BITS_OFFSET + (n_))
michael@0	65
michael@0	66	// Element-specific flags
michael@0	67	enum {
michael@0	68	// Set if the element has a pending style change.
michael@0	69	ELEMENT_HAS_PENDING_RESTYLE = ELEMENT_FLAG_BIT(0),
michael@0	70
michael@0	71	// Set if the element is a potential restyle root (that is, has a style
michael@0	72	// change pending _and_ that style change will attempt to restyle
michael@0	73	// descendants).
michael@0	74	ELEMENT_IS_POTENTIAL_RESTYLE_ROOT = ELEMENT_FLAG_BIT(1),
michael@0	75
michael@0	76	// Set if the element has a pending animation style change.
michael@0	77	ELEMENT_HAS_PENDING_ANIMATION_RESTYLE = ELEMENT_FLAG_BIT(2),
michael@0	78
michael@0	79	// Set if the element is a potential animation restyle root (that is,
michael@0	80	// has an animation style change pending _and_ that style change
michael@0	81	// will attempt to restyle descendants).
michael@0	82	ELEMENT_IS_POTENTIAL_ANIMATION_RESTYLE_ROOT = ELEMENT_FLAG_BIT(3),
michael@0	83
michael@0	84	// All of those bits together, for convenience.
michael@0	85	ELEMENT_ALL_RESTYLE_FLAGS = ELEMENT_HAS_PENDING_RESTYLE |
michael@0	86	ELEMENT_IS_POTENTIAL_RESTYLE_ROOT |
michael@0	87	ELEMENT_HAS_PENDING_ANIMATION_RESTYLE |
michael@0	88	ELEMENT_IS_POTENTIAL_ANIMATION_RESTYLE_ROOT,
michael@0	89
michael@0	90	// Just the HAS_PENDING bits, for convenience
michael@0	91	ELEMENT_PENDING_RESTYLE_FLAGS = ELEMENT_HAS_PENDING_RESTYLE |
michael@0	92	ELEMENT_HAS_PENDING_ANIMATION_RESTYLE,
michael@0	93
michael@0	94	// Remaining bits are for subclasses
michael@0	95	ELEMENT_TYPE_SPECIFIC_BITS_OFFSET = NODE_TYPE_SPECIFIC_BITS_OFFSET + 4
michael@0	96	};
michael@0	97
michael@0	98	#undef ELEMENT_FLAG_BIT
michael@0	99
michael@0	100	// Make sure we have space for our bits
michael@0	101	ASSERT_NODE_FLAGS_SPACE(ELEMENT_TYPE_SPECIFIC_BITS_OFFSET);
michael@0	102
michael@0	103	namespace mozilla {
michael@0	104	class EventChainPostVisitor;
michael@0	105	class EventChainPreVisitor;
michael@0	106	class EventChainVisitor;
michael@0	107	class EventListenerManager;
michael@0	108	class EventStateManager;
michael@0	109
michael@0	110	namespace dom {
michael@0	111
michael@0	112	class Link;
michael@0	113	class UndoManager;
michael@0	114	class DOMRect;
michael@0	115	class DOMRectList;
michael@0	116
michael@0	117	// IID for the dom::Element interface
michael@0	118	#define NS_ELEMENT_IID \
michael@0	119	{ 0xf7c18f0f, 0xa8fd, 0x4a95, \
michael@0	120	{ 0x91, 0x72, 0xd3, 0xa7, 0x4a, 0xb8, 0xc4, 0xbe } }
michael@0	121
michael@0	122	class Element : public FragmentOrElement
michael@0	123	{
michael@0	124	public:
michael@0	125	#ifdef MOZILLA_INTERNAL_API
michael@0	126	Element(already_AddRefed<nsINodeInfo>& aNodeInfo) :
michael@0	127	FragmentOrElement(aNodeInfo),
michael@0	128	mState(NS_EVENT_STATE_MOZ_READONLY)
michael@0	129	{
michael@0	130	NS_ABORT_IF_FALSE(mNodeInfo->NodeType() == nsIDOMNode::ELEMENT_NODE,
michael@0	131	"Bad NodeType in aNodeInfo");
michael@0	132	SetIsElement();
michael@0	133	}
michael@0	134	#endif // MOZILLA_INTERNAL_API
michael@0	135
michael@0	136	NS_DECLARE_STATIC_IID_ACCESSOR(NS_ELEMENT_IID)
michael@0	137
michael@0	138	NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr);
michael@0	139
michael@0	140	/**
michael@0	141	* Method to get the full state of this element. See mozilla/EventStates.h
michael@0	142	* for the possible bits that could be set here.
michael@0	143	*/
michael@0	144	EventStates State() const
michael@0	145	{
michael@0	146	// mState is maintained by having whoever might have changed it
michael@0	147	// call UpdateState() or one of the other mState mutators.
michael@0	148	return mState;
michael@0	149	}
michael@0	150
michael@0	151	/**
michael@0	152	* Ask this element to update its state. If aNotify is false, then
michael@0	153	* state change notifications will not be dispatched; in that
michael@0	154	* situation it is the caller's responsibility to dispatch them.
michael@0	155	*
michael@0	156	* In general, aNotify should only be false if we're guaranteed that
michael@0	157	* the element can't have a frame no matter what its style is
michael@0	158	* (e.g. if we're in the middle of adding it to the document or
michael@0	159	* removing it from the document).
michael@0	160	*/
michael@0	161	void UpdateState(bool aNotify);
michael@0	162
michael@0	163	/**
michael@0	164	* Method to update mState with link state information. This does not notify.
michael@0	165	*/
michael@0	166	void UpdateLinkState(EventStates aState);
michael@0	167
michael@0	168	/**
michael@0	169	* Returns true if this element is either a full-screen element or an
michael@0	170	* ancestor of the full-screen element.
michael@0	171	*/
michael@0	172	bool IsFullScreenAncestor() const {
michael@0	173	return mState.HasAtLeastOneOfStates(NS_EVENT_STATE_FULL_SCREEN_ANCESTOR |
michael@0	174	NS_EVENT_STATE_FULL_SCREEN);
michael@0	175	}
michael@0	176
michael@0	177	/**
michael@0	178	* The style state of this element. This is the real state of the element
michael@0	179	* with any style locks applied for pseudo-class inspecting.
michael@0	180	*/
michael@0	181	EventStates StyleState() const
michael@0	182	{
michael@0	183	if (!HasLockedStyleStates()) {
michael@0	184	return mState;
michael@0	185	}
michael@0	186	return StyleStateFromLocks();
michael@0	187	}
michael@0	188
michael@0	189	/**
michael@0	190	* The style state locks applied to this element.
michael@0	191	*/
michael@0	192	EventStates LockedStyleStates() const;
michael@0	193
michael@0	194	/**
michael@0	195	* Add a style state lock on this element.
michael@0	196	*/
michael@0	197	void LockStyleStates(EventStates aStates);
michael@0	198
michael@0	199	/**
michael@0	200	* Remove a style state lock on this element.
michael@0	201	*/
michael@0	202	void UnlockStyleStates(EventStates aStates);
michael@0	203
michael@0	204	/**
michael@0	205	* Clear all style state locks on this element.
michael@0	206	*/
michael@0	207	void ClearStyleStateLocks();
michael@0	208
michael@0	209	/**
michael@0	210	* Get the inline style rule, if any, for this element.
michael@0	211	*/
michael@0	212	virtual css::StyleRule* GetInlineStyleRule();
michael@0	213
michael@0	214	/**
michael@0	215	* Set the inline style rule for this element. This will send an appropriate
michael@0	216	* AttributeChanged notification if aNotify is true.
michael@0	217	*/
michael@0	218	virtual nsresult SetInlineStyleRule(css::StyleRule* aStyleRule,
michael@0	219	const nsAString* aSerialized,
michael@0	220	bool aNotify);
michael@0	221
michael@0	222	/**
michael@0	223	* Get the SMIL override style rule for this element. If the rule hasn't been
michael@0	224	* created, this method simply returns null.
michael@0	225	*/
michael@0	226	virtual css::StyleRule* GetSMILOverrideStyleRule();
michael@0	227
michael@0	228	/**
michael@0	229	* Set the SMIL override style rule for this element. If aNotify is true, this
michael@0	230	* method will notify the document's pres context, so that the style changes
michael@0	231	* will be noticed.
michael@0	232	*/
michael@0	233	virtual nsresult SetSMILOverrideStyleRule(css::StyleRule* aStyleRule,
michael@0	234	bool aNotify);
michael@0	235
michael@0	236	/**
michael@0	237	* Returns a new nsISMILAttr that allows the caller to animate the given
michael@0	238	* attribute on this element.
michael@0	239	*
michael@0	240	* The CALLER OWNS the result and is responsible for deleting it.
michael@0	241	*/
michael@0	242	virtual nsISMILAttr* GetAnimatedAttr(int32_t aNamespaceID, nsIAtom* aName)
michael@0	243	{
michael@0	244	return nullptr;
michael@0	245	}
michael@0	246
michael@0	247	/**
michael@0	248	* Get the SMIL override style for this element. This is a style declaration
michael@0	249	* that is applied *after* the inline style, and it can be used e.g. to store
michael@0	250	* animated style values.
michael@0	251	*
michael@0	252	* Note: This method is analogous to the 'GetStyle' method in
michael@0	253	* nsGenericHTMLElement and nsStyledElement.
michael@0	254	*/
michael@0	255	virtual nsICSSDeclaration* GetSMILOverrideStyle();
michael@0	256
michael@0	257	/**
michael@0	258	* Returns if the element is labelable as per HTML specification.
michael@0	259	*/
michael@0	260	virtual bool IsLabelable() const;
michael@0	261
michael@0	262	/**
michael@0	263	* Is the attribute named stored in the mapped attributes?
michael@0	264	*
michael@0	265	* // XXXbz we use this method in HasAttributeDependentStyle, so svg
michael@0	266	* returns true here even though it stores nothing in the mapped
michael@0	267	* attributes.
michael@0	268	*/
michael@0	269	NS_IMETHOD_(bool) IsAttributeMapped(const nsIAtom* aAttribute) const;
michael@0	270
michael@0	271	/**
michael@0	272	* Get a hint that tells the style system what to do when
michael@0	273	* an attribute on this node changes, if something needs to happen
michael@0	274	* in response to the change *other* than the result of what is
michael@0	275	* mapped into style data via any type of style rule.
michael@0	276	*/
michael@0	277	virtual nsChangeHint GetAttributeChangeHint(const nsIAtom* aAttribute,
michael@0	278	int32_t aModType) const;
michael@0	279
michael@0	280	/**
michael@0	281	* Returns an atom holding the name of the "class" attribute on this
michael@0	282	* content node (if applicable). Returns null if there is no
michael@0	283	* "class" attribute for this type of content node.
michael@0	284	*/
michael@0	285	virtual nsIAtom *GetClassAttributeName() const;
michael@0	286
michael@0	287	inline Directionality GetDirectionality() const {
michael@0	288	if (HasFlag(NODE_HAS_DIRECTION_RTL)) {
michael@0	289	return eDir_RTL;
michael@0	290	}
michael@0	291
michael@0	292	if (HasFlag(NODE_HAS_DIRECTION_LTR)) {
michael@0	293	return eDir_LTR;
michael@0	294	}
michael@0	295
michael@0	296	return eDir_NotSet;
michael@0	297	}
michael@0	298
michael@0	299	inline void SetDirectionality(Directionality aDir, bool aNotify) {
michael@0	300	UnsetFlags(NODE_ALL_DIRECTION_FLAGS);
michael@0	301	if (!aNotify) {
michael@0	302	RemoveStatesSilently(DIRECTION_STATES);
michael@0	303	}
michael@0	304
michael@0	305	switch (aDir) {
michael@0	306	case (eDir_RTL):
michael@0	307	SetFlags(NODE_HAS_DIRECTION_RTL);
michael@0	308	if (!aNotify) {
michael@0	309	AddStatesSilently(NS_EVENT_STATE_RTL);
michael@0	310	}
michael@0	311	break;
michael@0	312
michael@0	313	case(eDir_LTR):
michael@0	314	SetFlags(NODE_HAS_DIRECTION_LTR);
michael@0	315	if (!aNotify) {
michael@0	316	AddStatesSilently(NS_EVENT_STATE_LTR);
michael@0	317	}
michael@0	318	break;
michael@0	319
michael@0	320	default:
michael@0	321	break;
michael@0	322	}
michael@0	323
michael@0	324	/*
michael@0	325	* Only call UpdateState if we need to notify, because we call
michael@0	326	* SetDirectionality for every element, and UpdateState is very very slow
michael@0	327	* for some elements.
michael@0	328	*/
michael@0	329	if (aNotify) {
michael@0	330	UpdateState(true);
michael@0	331	}
michael@0	332	}
michael@0	333
michael@0	334	bool GetBindingURL(nsIDocument *aDocument, css::URLValue **aResult);
michael@0	335
michael@0	336	// The bdi element defaults to dir=auto if it has no dir attribute set.
michael@0	337	// Other elements will only have dir=auto if they have an explicit dir=auto,
michael@0	338	// which will mean that HasValidDir() returns true but HasFixedDir() returns
michael@0	339	// false
michael@0	340	inline bool HasDirAuto() const {
michael@0	341	return (!HasFixedDir() &&
michael@0	342	(HasValidDir() || IsHTML(nsGkAtoms::bdi)));
michael@0	343	}
michael@0	344
michael@0	345	Directionality GetComputedDirectionality() const;
michael@0	346
michael@0	347	protected:
michael@0	348	/**
michael@0	349	* Method to get the _intrinsic_ content state of this element. This is the
michael@0	350	* state that is independent of the element's presentation. To get the full
michael@0	351	* content state, use State(). See mozilla/EventStates.h for
michael@0	352	* the possible bits that could be set here.
michael@0	353	*/
michael@0	354	virtual EventStates IntrinsicState() const;
michael@0	355
michael@0	356	/**
michael@0	357	* Method to add state bits. This should be called from subclass
michael@0	358	* constructors to set up our event state correctly at construction
michael@0	359	* time and other places where we don't want to notify a state
michael@0	360	* change.
michael@0	361	*/
michael@0	362	void AddStatesSilently(EventStates aStates)
michael@0	363	{
michael@0	364	mState |= aStates;
michael@0	365	}
michael@0	366
michael@0	367	/**
michael@0	368	* Method to remove state bits. This should be called from subclass
michael@0	369	* constructors to set up our event state correctly at construction
michael@0	370	* time and other places where we don't want to notify a state
michael@0	371	* change.
michael@0	372	*/
michael@0	373	void RemoveStatesSilently(EventStates aStates)
michael@0	374	{
michael@0	375	mState &= ~aStates;
michael@0	376	}
michael@0	377
michael@0	378	private:
michael@0	379	// Need to allow the ESM, nsGlobalWindow, and the focus manager to
michael@0	380	// set our state
michael@0	381	friend class mozilla::EventStateManager;
michael@0	382	friend class ::nsGlobalWindow;
michael@0	383	friend class ::nsFocusManager;
michael@0	384
michael@0	385	// Also need to allow Link to call UpdateLinkState.
michael@0	386	friend class Link;
michael@0	387
michael@0	388	void NotifyStateChange(EventStates aStates);
michael@0	389
michael@0	390	void NotifyStyleStateChange(EventStates aStates);
michael@0	391
michael@0	392	// Style state computed from element's state and style locks.
michael@0	393	EventStates StyleStateFromLocks() const;
michael@0	394
michael@0	395	protected:
michael@0	396	// Methods for the ESM to manage state bits. These will handle
michael@0	397	// setting up script blockers when they notify, so no need to do it
michael@0	398	// in the callers unless desired.
michael@0	399	virtual void AddStates(EventStates aStates)
michael@0	400	{
michael@0	401	NS_PRECONDITION(!aStates.HasAtLeastOneOfStates(INTRINSIC_STATES),
michael@0	402	"Should only be adding ESM-managed states here");
michael@0	403	AddStatesSilently(aStates);
michael@0	404	NotifyStateChange(aStates);
michael@0	405	}
michael@0	406	virtual void RemoveStates(EventStates aStates)
michael@0	407	{
michael@0	408	NS_PRECONDITION(!aStates.HasAtLeastOneOfStates(INTRINSIC_STATES),
michael@0	409	"Should only be removing ESM-managed states here");
michael@0	410	RemoveStatesSilently(aStates);
michael@0	411	NotifyStateChange(aStates);
michael@0	412	}
michael@0	413	public:
michael@0	414	virtual void UpdateEditableState(bool aNotify) MOZ_OVERRIDE;
michael@0	415
michael@0	416	virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
michael@0	417	nsIContent* aBindingParent,
michael@0	418	bool aCompileEventHandlers) MOZ_OVERRIDE;
michael@0	419	virtual void UnbindFromTree(bool aDeep = true,
michael@0	420	bool aNullParent = true) MOZ_OVERRIDE;
michael@0	421
michael@0	422	/**
michael@0	423	* Normalizes an attribute name and returns it as a nodeinfo if an attribute
michael@0	424	* with that name exists. This method is intended for character case
michael@0	425	* conversion if the content object is case insensitive (e.g. HTML). Returns
michael@0	426	* the nodeinfo of the attribute with the specified name if one exists or
michael@0	427	* null otherwise.
michael@0	428	*
michael@0	429	* @param aStr the unparsed attribute string
michael@0	430	* @return the node info. May be nullptr.
michael@0	431	*/
michael@0	432	already_AddRefed<nsINodeInfo>
michael@0	433	GetExistingAttrNameFromQName(const nsAString& aStr) const;
michael@0	434
michael@0	435	nsresult SetAttr(int32_t aNameSpaceID, nsIAtom* aName,
michael@0	436	const nsAString& aValue, bool aNotify)
michael@0	437	{
michael@0	438	return SetAttr(aNameSpaceID, aName, nullptr, aValue, aNotify);
michael@0	439	}
michael@0	440
michael@0	441	/**
michael@0	442	* Helper for SetAttr/SetParsedAttr. This method will return true if aNotify
michael@0	443	* is true or there are mutation listeners that must be triggered, the
michael@0	444	* attribute is currently set, and the new value that is about to be set is
michael@0	445	* different to the current value. As a perf optimization the new and old
michael@0	446	* values will not actually be compared if we aren't notifying and we don't
michael@0	447	* have mutation listeners (in which case it's cheap to just return false
michael@0	448	* and let the caller go ahead and set the value).
michael@0	449	* @param aOldValue Set to the old value of the attribute, but only if there
michael@0	450	* are event listeners. If set, the type of aOldValue will be either
michael@0	451	* nsAttrValue::eString or nsAttrValue::eAtom.
michael@0	452	* @param aModType Set to nsIDOMMutationEvent::MODIFICATION or to
michael@0	453	* nsIDOMMutationEvent::ADDITION, but only if this helper returns true
michael@0	454	* @param aHasListeners Set to true if there are mutation event listeners
michael@0	455	* listening for NS_EVENT_BITS_MUTATION_ATTRMODIFIED
michael@0	456	*/
michael@0	457	bool MaybeCheckSameAttrVal(int32_t aNamespaceID, nsIAtom* aName,
michael@0	458	nsIAtom* aPrefix,
michael@0	459	const nsAttrValueOrString& aValue,
michael@0	460	bool aNotify, nsAttrValue& aOldValue,
michael@0	461	uint8_t* aModType, bool* aHasListeners);
michael@0	462
michael@0	463	bool OnlyNotifySameValueSet(int32_t aNamespaceID, nsIAtom* aName,
michael@0	464	nsIAtom* aPrefix,
michael@0	465	const nsAttrValueOrString& aValue,
michael@0	466	bool aNotify, nsAttrValue& aOldValue,
michael@0	467	uint8_t* aModType, bool* aHasListeners);
michael@0	468
michael@0	469	virtual nsresult SetAttr(int32_t aNameSpaceID, nsIAtom* aName, nsIAtom* aPrefix,
michael@0	470	const nsAString& aValue, bool aNotify) MOZ_OVERRIDE;
michael@0	471	nsresult SetParsedAttr(int32_t aNameSpaceID, nsIAtom* aName, nsIAtom* aPrefix,
michael@0	472	nsAttrValue& aParsedValue, bool aNotify);
michael@0	473	// GetAttr is not inlined on purpose, to keep down codesize from all
michael@0	474	// the inlined nsAttrValue bits for C++ callers.
michael@0	475	bool GetAttr(int32_t aNameSpaceID, nsIAtom* aName,
michael@0	476	nsAString& aResult) const;
michael@0	477	inline bool HasAttr(int32_t aNameSpaceID, nsIAtom* aName) const;
michael@0	478	// aCaseSensitive == eIgnoreCaase means ASCII case-insensitive matching.
michael@0	479	inline bool AttrValueIs(int32_t aNameSpaceID, nsIAtom* aName,
michael@0	480	const nsAString& aValue,
michael@0	481	nsCaseTreatment aCaseSensitive) const;
michael@0	482	inline bool AttrValueIs(int32_t aNameSpaceID, nsIAtom* aName,
michael@0	483	nsIAtom* aValue,
michael@0	484	nsCaseTreatment aCaseSensitive) const;
michael@0	485	virtual int32_t FindAttrValueIn(int32_t aNameSpaceID,
michael@0	486	nsIAtom* aName,
michael@0	487	AttrValuesArray* aValues,
michael@0	488	nsCaseTreatment aCaseSensitive) const MOZ_OVERRIDE;
michael@0	489	virtual nsresult UnsetAttr(int32_t aNameSpaceID, nsIAtom* aAttribute,
michael@0	490	bool aNotify) MOZ_OVERRIDE;
michael@0	491	virtual const nsAttrName* GetAttrNameAt(uint32_t aIndex) const MOZ_OVERRIDE;
michael@0	492	virtual uint32_t GetAttrCount() const MOZ_OVERRIDE;
michael@0	493	virtual bool IsNodeOfType(uint32_t aFlags) const MOZ_OVERRIDE;
michael@0	494
michael@0	495	#ifdef DEBUG
michael@0	496	virtual void List(FILE* out = stdout, int32_t aIndent = 0) const MOZ_OVERRIDE
michael@0	497	{
michael@0	498	List(out, aIndent, EmptyCString());
michael@0	499	}
michael@0	500	virtual void DumpContent(FILE* out, int32_t aIndent, bool aDumpAll) const MOZ_OVERRIDE;
michael@0	501	void List(FILE* out, int32_t aIndent, const nsCString& aPrefix) const;
michael@0	502	void ListAttributes(FILE* out) const;
michael@0	503	#endif
michael@0	504
michael@0	505	void Describe(nsAString& aOutDescription) const MOZ_OVERRIDE;
michael@0	506
michael@0	507	/*
michael@0	508	* Attribute Mapping Helpers
michael@0	509	*/
michael@0	510	struct MappedAttributeEntry {
michael@0	511	nsIAtom** attribute;
michael@0	512	};
michael@0	513
michael@0	514	/**
michael@0	515	* A common method where you can just pass in a list of maps to check
michael@0	516	* for attribute dependence. Most implementations of
michael@0	517	* IsAttributeMapped should use this function as a default
michael@0	518	* handler.
michael@0	519	*/
michael@0	520	template<size_t N>
michael@0	521	static bool
michael@0	522	FindAttributeDependence(const nsIAtom* aAttribute,
michael@0	523	const MappedAttributeEntry* const (&aMaps)[N])
michael@0	524	{
michael@0	525	return FindAttributeDependence(aAttribute, aMaps, N);
michael@0	526	}
michael@0	527
michael@0	528	private:
michael@0	529	void DescribeAttribute(uint32_t index, nsAString& aOutDescription) const;
michael@0	530
michael@0	531	static bool
michael@0	532	FindAttributeDependence(const nsIAtom* aAttribute,
michael@0	533	const MappedAttributeEntry* const aMaps[],
michael@0	534	uint32_t aMapCount);
michael@0	535
michael@0	536	protected:
michael@0	537	inline bool GetAttr(int32_t aNameSpaceID, nsIAtom* aName,
michael@0	538	DOMString& aResult) const
michael@0	539	{
michael@0	540	NS_ASSERTION(nullptr != aName, "must have attribute name");
michael@0	541	NS_ASSERTION(aNameSpaceID != kNameSpaceID_Unknown,
michael@0	542	"must have a real namespace ID!");
michael@0	543	MOZ_ASSERT(aResult.HasStringBuffer() && aResult.StringBufferLength() == 0,
michael@0	544	"Should have empty string coming in");
michael@0	545	const nsAttrValue* val = mAttrsAndChildren.GetAttr(aName, aNameSpaceID);
michael@0	546	if (val) {
michael@0	547	val->ToString(aResult);
michael@0	548	return true;
michael@0	549	}
michael@0	550	// else DOMString comes pre-emptied.
michael@0	551	return false;
michael@0	552	}
michael@0	553
michael@0	554	public:
michael@0	555	bool HasAttrs() const { return mAttrsAndChildren.HasAttrs(); }
michael@0	556
michael@0	557	inline bool GetAttr(const nsAString& aName, DOMString& aResult) const
michael@0	558	{
michael@0	559	MOZ_ASSERT(aResult.HasStringBuffer() && aResult.StringBufferLength() == 0,
michael@0	560	"Should have empty string coming in");
michael@0	561	const nsAttrValue* val = mAttrsAndChildren.GetAttr(aName);
michael@0	562	if (val) {
michael@0	563	val->ToString(aResult);
michael@0	564	return true;
michael@0	565	}
michael@0	566	// else DOMString comes pre-emptied.
michael@0	567	return false;
michael@0	568	}
michael@0	569
michael@0	570	void GetTagName(nsAString& aTagName) const
michael@0	571	{
michael@0	572	aTagName = NodeName();
michael@0	573	}
michael@0	574	void GetId(nsAString& aId) const
michael@0	575	{
michael@0	576	GetAttr(kNameSpaceID_None, nsGkAtoms::id, aId);
michael@0	577	}
michael@0	578	void GetId(DOMString& aId) const
michael@0	579	{
michael@0	580	GetAttr(kNameSpaceID_None, nsGkAtoms::id, aId);
michael@0	581	}
michael@0	582	void SetId(const nsAString& aId)
michael@0	583	{
michael@0	584	SetAttr(kNameSpaceID_None, nsGkAtoms::id, aId, true);
michael@0	585	}
michael@0	586
michael@0	587	nsDOMTokenList* GetClassList();
michael@0	588	nsDOMAttributeMap* Attributes()
michael@0	589	{
michael@0	590	nsDOMSlots* slots = DOMSlots();
michael@0	591	if (!slots->mAttributeMap) {
michael@0	592	slots->mAttributeMap = new nsDOMAttributeMap(this);
michael@0	593	}
michael@0	594
michael@0	595	return slots->mAttributeMap;
michael@0	596	}
michael@0	597	void GetAttribute(const nsAString& aName, nsString& aReturn)
michael@0	598	{
michael@0	599	DOMString str;
michael@0	600	GetAttribute(aName, str);
michael@0	601	str.ToString(aReturn);
michael@0	602	}
michael@0	603
michael@0	604	void GetAttribute(const nsAString& aName, DOMString& aReturn);
michael@0	605	void GetAttributeNS(const nsAString& aNamespaceURI,
michael@0	606	const nsAString& aLocalName,
michael@0	607	nsAString& aReturn);
michael@0	608	void SetAttribute(const nsAString& aName, const nsAString& aValue,
michael@0	609	ErrorResult& aError);
michael@0	610	void SetAttributeNS(const nsAString& aNamespaceURI,
michael@0	611	const nsAString& aLocalName,
michael@0	612	const nsAString& aValue,
michael@0	613	ErrorResult& aError);
michael@0	614	void RemoveAttribute(const nsAString& aName,
michael@0	615	ErrorResult& aError);
michael@0	616	void RemoveAttributeNS(const nsAString& aNamespaceURI,
michael@0	617	const nsAString& aLocalName,
michael@0	618	ErrorResult& aError);
michael@0	619	bool HasAttribute(const nsAString& aName) const
michael@0	620	{
michael@0	621	return InternalGetExistingAttrNameFromQName(aName) != nullptr;
michael@0	622	}
michael@0	623	bool HasAttributeNS(const nsAString& aNamespaceURI,
michael@0	624	const nsAString& aLocalName) const;
michael@0	625	already_AddRefed<nsIHTMLCollection>
michael@0	626	GetElementsByTagName(const nsAString& aQualifiedName);
michael@0	627	already_AddRefed<nsIHTMLCollection>
michael@0	628	GetElementsByTagNameNS(const nsAString& aNamespaceURI,
michael@0	629	const nsAString& aLocalName,
michael@0	630	ErrorResult& aError);
michael@0	631	already_AddRefed<nsIHTMLCollection>
michael@0	632	GetElementsByClassName(const nsAString& aClassNames);
michael@0	633	bool MozMatchesSelector(const nsAString& aSelector,
michael@0	634	ErrorResult& aError);
michael@0	635	void SetPointerCapture(int32_t aPointerId, ErrorResult& aError)
michael@0	636	{
michael@0	637	bool activeState = false;
michael@0	638	if (!nsIPresShell::GetPointerInfo(aPointerId, activeState)) {
michael@0	639	aError.Throw(NS_ERROR_DOM_INVALID_POINTER_ERR);
michael@0	640	return;
michael@0	641	}
michael@0	642	if (!activeState) {
michael@0	643	return;
michael@0	644	}
michael@0	645	nsIPresShell::SetPointerCapturingContent(aPointerId, this);
michael@0	646	}
michael@0	647	void ReleasePointerCapture(int32_t aPointerId, ErrorResult& aError)
michael@0	648	{
michael@0	649	bool activeState = false;
michael@0	650	if (!nsIPresShell::GetPointerInfo(aPointerId, activeState)) {
michael@0	651	aError.Throw(NS_ERROR_DOM_INVALID_POINTER_ERR);
michael@0	652	return;
michael@0	653	}
michael@0	654
michael@0	655	// Ignoring ReleasePointerCapture call on incorrect element (on element
michael@0	656	// that didn't have capture before).
michael@0	657	if (nsIPresShell::GetPointerCapturingContent(aPointerId) == this) {
michael@0	658	nsIPresShell::ReleasePointerCapturingContent(aPointerId, this);
michael@0	659	}
michael@0	660	}
michael@0	661	void SetCapture(bool aRetargetToElement)
michael@0	662	{
michael@0	663	// If there is already an active capture, ignore this request. This would
michael@0	664	// occur if a splitter, frame resizer, etc had already captured and we don't
michael@0	665	// want to override those.
michael@0	666	if (!nsIPresShell::GetCapturingContent()) {
michael@0	667	nsIPresShell::SetCapturingContent(this, CAPTURE_PREVENTDRAG |
michael@0	668	(aRetargetToElement ? CAPTURE_RETARGETTOELEMENT : 0));
michael@0	669	}
michael@0	670	}
michael@0	671	void ReleaseCapture()
michael@0	672	{
michael@0	673	if (nsIPresShell::GetCapturingContent() == this) {
michael@0	674	nsIPresShell::SetCapturingContent(nullptr, 0);
michael@0	675	}
michael@0	676	}
michael@0	677	void MozRequestFullScreen();
michael@0	678	void MozRequestPointerLock();
michael@0	679	Attr* GetAttributeNode(const nsAString& aName);
michael@0	680	already_AddRefed<Attr> SetAttributeNode(Attr& aNewAttr,
michael@0	681	ErrorResult& aError);
michael@0	682	already_AddRefed<Attr> RemoveAttributeNode(Attr& aOldAttr,
michael@0	683	ErrorResult& aError);
michael@0	684	Attr* GetAttributeNodeNS(const nsAString& aNamespaceURI,
michael@0	685	const nsAString& aLocalName);
michael@0	686	already_AddRefed<Attr> SetAttributeNodeNS(Attr& aNewAttr,
michael@0	687	ErrorResult& aError);
michael@0	688
michael@0	689	already_AddRefed<DOMRectList> GetClientRects();
michael@0	690	already_AddRefed<DOMRect> GetBoundingClientRect();
michael@0	691
michael@0	692	already_AddRefed<ShadowRoot> CreateShadowRoot(ErrorResult& aError);
michael@0	693
michael@0	694	void ScrollIntoView()
michael@0	695	{
michael@0	696	ScrollIntoView(true);
michael@0	697	}
michael@0	698	void ScrollIntoView(bool aTop);
michael@0	699	int32_t ScrollTop()
michael@0	700	{
michael@0	701	nsIScrollableFrame* sf = GetScrollFrame();
michael@0	702	return sf ? sf->GetScrollPositionCSSPixels().y : 0;
michael@0	703	}
michael@0	704	void SetScrollTop(int32_t aScrollTop)
michael@0	705	{
michael@0	706	nsIScrollableFrame* sf = GetScrollFrame();
michael@0	707	if (sf) {
michael@0	708	sf->ScrollToCSSPixels(CSSIntPoint(sf->GetScrollPositionCSSPixels().x,
michael@0	709	aScrollTop));
michael@0	710	}
michael@0	711	}
michael@0	712	int32_t ScrollLeft()
michael@0	713	{
michael@0	714	nsIScrollableFrame* sf = GetScrollFrame();
michael@0	715	return sf ? sf->GetScrollPositionCSSPixels().x : 0;
michael@0	716	}
michael@0	717	void SetScrollLeft(int32_t aScrollLeft)
michael@0	718	{
michael@0	719	nsIScrollableFrame* sf = GetScrollFrame();
michael@0	720	if (sf) {
michael@0	721	sf->ScrollToCSSPixels(CSSIntPoint(aScrollLeft,
michael@0	722	sf->GetScrollPositionCSSPixels().y));
michael@0	723	}
michael@0	724	}
michael@0	725	/* Scrolls without flushing the layout.
michael@0	726	* aDx is the x offset, aDy the y offset in CSS pixels.
michael@0	727	* Returns true if we actually scrolled.
michael@0	728	*/
michael@0	729	bool ScrollByNoFlush(int32_t aDx, int32_t aDy);
michael@0	730	int32_t ScrollWidth();
michael@0	731	int32_t ScrollHeight();
michael@0	732	int32_t ClientTop()
michael@0	733	{
michael@0	734	return nsPresContext::AppUnitsToIntCSSPixels(GetClientAreaRect().y);
michael@0	735	}
michael@0	736	int32_t ClientLeft()
michael@0	737	{
michael@0	738	return nsPresContext::AppUnitsToIntCSSPixels(GetClientAreaRect().x);
michael@0	739	}
michael@0	740	int32_t ClientWidth()
michael@0	741	{
michael@0	742	return nsPresContext::AppUnitsToIntCSSPixels(GetClientAreaRect().width);
michael@0	743	}
michael@0	744	int32_t ClientHeight()
michael@0	745	{
michael@0	746	return nsPresContext::AppUnitsToIntCSSPixels(GetClientAreaRect().height);
michael@0	747	}
michael@0	748	int32_t ScrollTopMax()
michael@0	749	{
michael@0	750	nsIScrollableFrame* sf = GetScrollFrame();
michael@0	751	return sf ?
michael@0	752	nsPresContext::AppUnitsToIntCSSPixels(sf->GetScrollRange().YMost()) :
michael@0	753	0;
michael@0	754	}
michael@0	755	int32_t ScrollLeftMax()
michael@0	756	{
michael@0	757	nsIScrollableFrame* sf = GetScrollFrame();
michael@0	758	return sf ?
michael@0	759	nsPresContext::AppUnitsToIntCSSPixels(sf->GetScrollRange().XMost()) :
michael@0	760	0;
michael@0	761	}
michael@0	762
michael@0	763	virtual already_AddRefed<UndoManager> GetUndoManager()
michael@0	764	{
michael@0	765	return nullptr;
michael@0	766	}
michael@0	767
michael@0	768	virtual bool UndoScope()
michael@0	769	{
michael@0	770	return false;
michael@0	771	}
michael@0	772
michael@0	773	virtual void SetUndoScope(bool aUndoScope, ErrorResult& aError)
michael@0	774	{
michael@0	775	}
michael@0	776
michael@0	777	NS_IMETHOD GetInnerHTML(nsAString& aInnerHTML);
michael@0	778	virtual void SetInnerHTML(const nsAString& aInnerHTML, ErrorResult& aError);
michael@0	779	void GetOuterHTML(nsAString& aOuterHTML);
michael@0	780	void SetOuterHTML(const nsAString& aOuterHTML, ErrorResult& aError);
michael@0	781	void InsertAdjacentHTML(const nsAString& aPosition, const nsAString& aText,
michael@0	782	ErrorResult& aError);
michael@0	783
michael@0	784	//----------------------------------------
michael@0	785
michael@0	786	/**
michael@0	787	* Add a script event listener with the given event handler name
michael@0	788	* (like onclick) and with the value as JS
michael@0	789	* @param aEventName the event listener name
michael@0	790	* @param aValue the JS to attach
michael@0	791	* @param aDefer indicates if deferred execution is allowed
michael@0	792	*/
michael@0	793	nsresult SetEventHandler(nsIAtom* aEventName,
michael@0	794	const nsAString& aValue,
michael@0	795	bool aDefer = true);
michael@0	796
michael@0	797	/**
michael@0	798	* Do whatever needs to be done when the mouse leaves a link
michael@0	799	*/
michael@0	800	nsresult LeaveLink(nsPresContext* aPresContext);
michael@0	801
michael@0	802	static bool ShouldBlur(nsIContent *aContent);
michael@0	803
michael@0	804	/**
michael@0	805	* Method to create and dispatch a left-click event loosely based on
michael@0	806	* aSourceEvent. If aFullDispatch is true, the event will be dispatched
michael@0	807	* through the full dispatching of the presshell of the aPresContext; if it's
michael@0	808	* false the event will be dispatched only as a DOM event.
michael@0	809	* If aPresContext is nullptr, this does nothing.
michael@0	810	*
michael@0	811	* @param aFlags Extra flags for the dispatching event. The true flags
michael@0	812	* will be respected.
michael@0	813	*/
michael@0	814	static nsresult DispatchClickEvent(nsPresContext* aPresContext,
michael@0	815	WidgetInputEvent* aSourceEvent,
michael@0	816	nsIContent* aTarget,
michael@0	817	bool aFullDispatch,
michael@0	818	const EventFlags* aFlags,
michael@0	819	nsEventStatus* aStatus);
michael@0	820
michael@0	821	/**
michael@0	822	* Method to dispatch aEvent to aTarget. If aFullDispatch is true, the event
michael@0	823	* will be dispatched through the full dispatching of the presshell of the
michael@0	824	* aPresContext; if it's false the event will be dispatched only as a DOM
michael@0	825	* event.
michael@0	826	* If aPresContext is nullptr, this does nothing.
michael@0	827	*/
michael@0	828	using nsIContent::DispatchEvent;
michael@0	829	static nsresult DispatchEvent(nsPresContext* aPresContext,
michael@0	830	WidgetEvent* aEvent,
michael@0	831	nsIContent* aTarget,
michael@0	832	bool aFullDispatch,
michael@0	833	nsEventStatus* aStatus);
michael@0	834
michael@0	835	/**
michael@0	836	* Get the primary frame for this content with flushing
michael@0	837	*
michael@0	838	* @param aType the kind of flush to do, typically Flush_Frames or
michael@0	839	* Flush_Layout
michael@0	840	* @return the primary frame
michael@0	841	*/
michael@0	842	nsIFrame* GetPrimaryFrame(mozFlushType aType);
michael@0	843	// Work around silly C++ name hiding stuff
michael@0	844	nsIFrame* GetPrimaryFrame() const { return nsIContent::GetPrimaryFrame(); }
michael@0	845
michael@0	846	/**
michael@0	847	* Struct that stores info on an attribute. The name and value must
michael@0	848	* either both be null or both be non-null.
michael@0	849	*/
michael@0	850	struct nsAttrInfo {
michael@0	851	nsAttrInfo(const nsAttrName* aName, const nsAttrValue* aValue) :
michael@0	852	mName(aName), mValue(aValue) {}
michael@0	853	nsAttrInfo(const nsAttrInfo& aOther) :
michael@0	854	mName(aOther.mName), mValue(aOther.mValue) {}
michael@0	855
michael@0	856	const nsAttrName* mName;
michael@0	857	const nsAttrValue* mValue;
michael@0	858	};
michael@0	859
michael@0	860	// Be careful when using this method. This does *NOT* handle
michael@0	861	// XUL prototypes. You may want to use GetAttrInfo.
michael@0	862	const nsAttrValue* GetParsedAttr(nsIAtom* aAttr) const
michael@0	863	{
michael@0	864	return mAttrsAndChildren.GetAttr(aAttr);
michael@0	865	}
michael@0	866
michael@0	867	/**
michael@0	868	* Returns the attribute map, if there is one.
michael@0	869	*
michael@0	870	* @return existing attribute map or nullptr.
michael@0	871	*/
michael@0	872	nsDOMAttributeMap *GetAttributeMap()
michael@0	873	{
michael@0	874	nsDOMSlots *slots = GetExistingDOMSlots();
michael@0	875
michael@0	876	return slots ? slots->mAttributeMap.get() : nullptr;
michael@0	877	}
michael@0	878
michael@0	879	virtual void RecompileScriptEventListeners()
michael@0	880	{
michael@0	881	}
michael@0	882
michael@0	883	/**
michael@0	884	* Get the attr info for the given namespace ID and attribute name. The
michael@0	885	* namespace ID must not be kNameSpaceID_Unknown and the name must not be
michael@0	886	* null. Note that this can only return info on attributes that actually
michael@0	887	* live on this element (and is only virtual to handle XUL prototypes). That
michael@0	888	* is, this should only be called from methods that only care about attrs
michael@0	889	* that effectively live in mAttrsAndChildren.
michael@0	890	*/
michael@0	891	virtual nsAttrInfo GetAttrInfo(int32_t aNamespaceID, nsIAtom* aName) const;
michael@0	892
michael@0	893	virtual void NodeInfoChanged(nsINodeInfo* aOldNodeInfo)
michael@0	894	{
michael@0	895	}
michael@0	896
michael@0	897	/**
michael@0	898	* Parse a string into an nsAttrValue for a CORS attribute. This
michael@0	899	* never fails. The resulting value is an enumerated value whose
michael@0	900	* GetEnumValue() returns one of the above constants.
michael@0	901	*/
michael@0	902	static void ParseCORSValue(const nsAString& aValue, nsAttrValue& aResult);
michael@0	903
michael@0	904	/**
michael@0	905	* Return the CORS mode for a given string
michael@0	906	*/
michael@0	907	static CORSMode StringToCORSMode(const nsAString& aValue);
michael@0	908
michael@0	909	/**
michael@0	910	* Return the CORS mode for a given nsAttrValue (which may be null,
michael@0	911	* but if not should have been parsed via ParseCORSValue).
michael@0	912	*/
michael@0	913	static CORSMode AttrValueToCORSMode(const nsAttrValue* aValue);
michael@0	914
michael@0	915	// These are just used to implement nsIDOMElement using
michael@0	916	// NS_FORWARD_NSIDOMELEMENT_TO_GENERIC and for quickstubs.
michael@0	917	void
michael@0	918	GetElementsByTagName(const nsAString& aQualifiedName,
michael@0	919	nsIDOMHTMLCollection** aResult);
michael@0	920	nsresult
michael@0	921	GetElementsByTagNameNS(const nsAString& aNamespaceURI,
michael@0	922	const nsAString& aLocalName,
michael@0	923	nsIDOMHTMLCollection** aResult);
michael@0	924	nsresult
michael@0	925	GetElementsByClassName(const nsAString& aClassNames,
michael@0	926	nsIDOMHTMLCollection** aResult);
michael@0	927	void GetClassList(nsISupports** aClassList);
michael@0	928
michael@0	929	virtual JSObject* WrapObject(JSContext *aCx) MOZ_FINAL MOZ_OVERRIDE;
michael@0	930
michael@0	931	/**
michael@0	932	* Locate an nsIEditor rooted at this content node, if there is one.
michael@0	933	*/
michael@0	934	nsIEditor* GetEditorInternal();
michael@0	935
michael@0	936	/**
michael@0	937	* Helper method for NS_IMPL_BOOL_ATTR macro.
michael@0	938	* Gets value of boolean attribute. Only works for attributes in null
michael@0	939	* namespace.
michael@0	940	*
michael@0	941	* @param aAttr name of attribute.
michael@0	942	* @param aValue Boolean value of attribute.
michael@0	943	*/
michael@0	944	NS_HIDDEN_(bool) GetBoolAttr(nsIAtom* aAttr) const
michael@0	945	{
michael@0	946	return HasAttr(kNameSpaceID_None, aAttr);
michael@0	947	}
michael@0	948
michael@0	949	/**
michael@0	950	* Helper method for NS_IMPL_BOOL_ATTR macro.
michael@0	951	* Sets value of boolean attribute by removing attribute or setting it to
michael@0	952	* the empty string. Only works for attributes in null namespace.
michael@0	953	*
michael@0	954	* @param aAttr name of attribute.
michael@0	955	* @param aValue Boolean value of attribute.
michael@0	956	*/
michael@0	957	NS_HIDDEN_(nsresult) SetBoolAttr(nsIAtom* aAttr, bool aValue);
michael@0	958
michael@0	959	/**
michael@0	960	* Retrieve the ratio of font-size-inflated text font size to computed font
michael@0	961	* size for this element. This will query the element for its primary frame,
michael@0	962	* and then use this to get font size inflation information about the frame.
michael@0	963	*
michael@0	964	* @returns The font size inflation ratio (inflated font size to uninflated
michael@0	965	* font size) for the primary frame of this element. Returns 1.0
michael@0	966	* by default if font size inflation is not enabled. Returns -1
michael@0	967	* if the element does not have a primary frame.
michael@0	968	*
michael@0	969	* @note The font size inflation ratio that is returned is actually the
michael@0	970	* font size inflation data for the element's _primary frame_, not the
michael@0	971	* element itself, but for most purposes, this should be sufficient.
michael@0	972	*/
michael@0	973	float FontSizeInflation();
michael@0	974
michael@0	975	protected:
michael@0	976	/*
michael@0	977	* Named-bools for use with SetAttrAndNotify to make call sites easier to
michael@0	978	* read.
michael@0	979	*/
michael@0	980	static const bool kFireMutationEvent = true;
michael@0	981	static const bool kDontFireMutationEvent = false;
michael@0	982	static const bool kNotifyDocumentObservers = true;
michael@0	983	static const bool kDontNotifyDocumentObservers = false;
michael@0	984	static const bool kCallAfterSetAttr = true;
michael@0	985	static const bool kDontCallAfterSetAttr = false;
michael@0	986
michael@0	987	/**
michael@0	988	* Set attribute and (if needed) notify documentobservers and fire off
michael@0	989	* mutation events. This will send the AttributeChanged notification.
michael@0	990	* Callers of this method are responsible for calling AttributeWillChange,
michael@0	991	* since that needs to happen before the new attr value has been set, and
michael@0	992	* in particular before it has been parsed.
michael@0	993	*
michael@0	994	* For the boolean parameters, consider using the named bools above to aid
michael@0	995	* code readability.
michael@0	996	*
michael@0	997	* @param aNamespaceID namespace of attribute
michael@0	998	* @param aAttribute local-name of attribute
michael@0	999	* @param aPrefix aPrefix of attribute
michael@0	1000	* @param aOldValue previous value of attribute. Only needed if
michael@0	1001	* aFireMutation is true or if the element is a
michael@0	1002	* custom element (in web components).
michael@0	1003	* @param aParsedValue parsed new value of attribute
michael@0	1004	* @param aModType nsIDOMMutationEvent::MODIFICATION or ADDITION. Only
michael@0	1005	* needed if aFireMutation or aNotify is true.
michael@0	1006	* @param aFireMutation should mutation-events be fired?
michael@0	1007	* @param aNotify should we notify document-observers?
michael@0	1008	* @param aCallAfterSetAttr should we call AfterSetAttr?
michael@0	1009	*/
michael@0	1010	nsresult SetAttrAndNotify(int32_t aNamespaceID,
michael@0	1011	nsIAtom* aName,
michael@0	1012	nsIAtom* aPrefix,
michael@0	1013	const nsAttrValue& aOldValue,
michael@0	1014	nsAttrValue& aParsedValue,
michael@0	1015	uint8_t aModType,
michael@0	1016	bool aFireMutation,
michael@0	1017	bool aNotify,
michael@0	1018	bool aCallAfterSetAttr);
michael@0	1019
michael@0	1020	/**
michael@0	1021	* Convert an attribute string value to attribute type based on the type of
michael@0	1022	* attribute. Called by SetAttr(). Note that at the moment we only do this
michael@0	1023	* for attributes in the null namespace (kNameSpaceID_None).
michael@0	1024	*
michael@0	1025	* @param aNamespaceID the namespace of the attribute to convert
michael@0	1026	* @param aAttribute the attribute to convert
michael@0	1027	* @param aValue the string value to convert
michael@0	1028	* @param aResult the nsAttrValue [OUT]
michael@0	1029	* @return true if the parsing was successful, false otherwise
michael@0	1030	*/
michael@0	1031	virtual bool ParseAttribute(int32_t aNamespaceID,
michael@0	1032	nsIAtom* aAttribute,
michael@0	1033	const nsAString& aValue,
michael@0	1034	nsAttrValue& aResult);
michael@0	1035
michael@0	1036	/**
michael@0	1037	* Try to set the attribute as a mapped attribute, if applicable. This will
michael@0	1038	* only be called for attributes that are in the null namespace and only on
michael@0	1039	* attributes that returned true when passed to IsAttributeMapped. The
michael@0	1040	* caller will not try to set the attr in any other way if this method
michael@0	1041	* returns true (the value of aRetval does not matter for that purpose).
michael@0	1042	*
michael@0	1043	* @param aDocument the current document of this node (an optimization)
michael@0	1044	* @param aName the name of the attribute
michael@0	1045	* @param aValue the nsAttrValue to set
michael@0	1046	* @param [out] aRetval the nsresult status of the operation, if any.
michael@0	1047	* @return true if the setting was attempted, false otherwise.
michael@0	1048	*/
michael@0	1049	virtual bool SetMappedAttribute(nsIDocument* aDocument,
michael@0	1050	nsIAtom* aName,
michael@0	1051	nsAttrValue& aValue,
michael@0	1052	nsresult* aRetval);
michael@0	1053
michael@0	1054	/**
michael@0	1055	* Hook that is called by Element::SetAttr to allow subclasses to
michael@0	1056	* deal with attribute sets. This will only be called after we verify that
michael@0	1057	* we're actually doing an attr set and will be called before
michael@0	1058	* AttributeWillChange and before ParseAttribute and hence before we've set
michael@0	1059	* the new value.
michael@0	1060	*
michael@0	1061	* @param aNamespaceID the namespace of the attr being set
michael@0	1062	* @param aName the localname of the attribute being set
michael@0	1063	* @param aValue the value it's being set to represented as either a string or
michael@0	1064	* a parsed nsAttrValue. Alternatively, if the attr is being removed it
michael@0	1065	* will be null.
michael@0	1066	* @param aNotify Whether we plan to notify document observers.
michael@0	1067	*/
michael@0	1068	// Note that this is inlined so that when subclasses call it it gets
michael@0	1069	// inlined. Those calls don't go through a vtable.
michael@0	1070	virtual nsresult BeforeSetAttr(int32_t aNamespaceID, nsIAtom* aName,
michael@0	1071	const nsAttrValueOrString* aValue,
michael@0	1072	bool aNotify)
michael@0	1073	{
michael@0	1074	return NS_OK;
michael@0	1075	}
michael@0	1076
michael@0	1077	/**
michael@0	1078	* Hook that is called by Element::SetAttr to allow subclasses to
michael@0	1079	* deal with attribute sets. This will only be called after we have called
michael@0	1080	* SetAndTakeAttr and AttributeChanged (that is, after we have actually set
michael@0	1081	* the attr). It will always be called under a scriptblocker.
michael@0	1082	*
michael@0	1083	* @param aNamespaceID the namespace of the attr being set
michael@0	1084	* @param aName the localname of the attribute being set
michael@0	1085	* @param aValue the value it's being set to. If null, the attr is being
michael@0	1086	* removed.
michael@0	1087	* @param aNotify Whether we plan to notify document observers.
michael@0	1088	*/
michael@0	1089	// Note that this is inlined so that when subclasses call it it gets
michael@0	1090	// inlined. Those calls don't go through a vtable.
michael@0	1091	virtual nsresult AfterSetAttr(int32_t aNamespaceID, nsIAtom* aName,
michael@0	1092	const nsAttrValue* aValue, bool aNotify)
michael@0	1093	{
michael@0	1094	return NS_OK;
michael@0	1095	}
michael@0	1096
michael@0	1097	/**
michael@0	1098	* Hook to allow subclasses to produce a different EventListenerManager if
michael@0	1099	* needed for attachment of attribute-defined handlers
michael@0	1100	*/
michael@0	1101	virtual EventListenerManager*
michael@0	1102	GetEventListenerManagerForAttr(nsIAtom* aAttrName, bool* aDefer);
michael@0	1103
michael@0	1104	/**
michael@0	1105	* Internal hook for converting an attribute name-string to an atomized name
michael@0	1106	*/
michael@0	1107	virtual const nsAttrName* InternalGetExistingAttrNameFromQName(const nsAString& aStr) const;
michael@0	1108
michael@0	1109	nsIFrame* GetStyledFrame();
michael@0	1110
michael@0	1111	virtual Element* GetNameSpaceElement()
michael@0	1112	{
michael@0	1113	return this;
michael@0	1114	}
michael@0	1115
michael@0	1116	Attr* GetAttributeNodeNSInternal(const nsAString& aNamespaceURI,
michael@0	1117	const nsAString& aLocalName);
michael@0	1118
michael@0	1119	inline void RegisterFreezableElement();
michael@0	1120	inline void UnregisterFreezableElement();
michael@0	1121
michael@0	1122	/**
michael@0	1123	* Add/remove this element to the documents id cache
michael@0	1124	*/
michael@0	1125	void AddToIdTable(nsIAtom* aId);
michael@0	1126	void RemoveFromIdTable(); // checks HasID() and uses DoGetID()
michael@0	1127	void RemoveFromIdTable(nsIAtom* aId);
michael@0	1128
michael@0	1129	/**
michael@0	1130	* Functions to carry out event default actions for links of all types
michael@0	1131	* (HTML links, XLinks, SVG "XLinks", etc.)
michael@0	1132	*/
michael@0	1133
michael@0	1134	/**
michael@0	1135	* Check that we meet the conditions to handle a link event
michael@0	1136	* and that we are actually on a link.
michael@0	1137	*
michael@0	1138	* @param aVisitor event visitor
michael@0	1139	* @param aURI the uri of the link, set only if the return value is true [OUT]
michael@0	1140	* @return true if we can handle the link event, false otherwise
michael@0	1141	*/
michael@0	1142	bool CheckHandleEventForLinksPrecondition(EventChainVisitor& aVisitor,
michael@0	1143	nsIURI** aURI) const;
michael@0	1144
michael@0	1145	/**
michael@0	1146	* Handle status bar updates before they can be cancelled.
michael@0	1147	*/
michael@0	1148	nsresult PreHandleEventForLinks(EventChainPreVisitor& aVisitor);
michael@0	1149
michael@0	1150	/**
michael@0	1151	* Handle default actions for link event if the event isn't consumed yet.
michael@0	1152	*/
michael@0	1153	nsresult PostHandleEventForLinks(EventChainPostVisitor& aVisitor);
michael@0	1154
michael@0	1155	/**
michael@0	1156	* Get the target of this link element. Consumers should established that
michael@0	1157	* this element is a link (probably using IsLink) before calling this
michael@0	1158	* function (or else why call it?)
michael@0	1159	*
michael@0	1160	* Note: for HTML this gets the value of the 'target' attribute; for XLink
michael@0	1161	* this gets the value of the xlink:_moz_target attribute, or failing that,
michael@0	1162	* the value of xlink:show, converted to a suitably equivalent named target
michael@0	1163	* (e.g. _blank).
michael@0	1164	*/
michael@0	1165	virtual void GetLinkTarget(nsAString& aTarget);
michael@0	1166
michael@0	1167	private:
michael@0	1168	/**
michael@0	1169	* Get this element's client area rect in app units.
michael@0	1170	* @return the frame's client area
michael@0	1171	*/
michael@0	1172	nsRect GetClientAreaRect();
michael@0	1173
michael@0	1174	nsIScrollableFrame* GetScrollFrame(nsIFrame **aStyledFrame = nullptr,
michael@0	1175	bool aFlushLayout = true);
michael@0	1176
michael@0	1177	// Data members
michael@0	1178	EventStates mState;
michael@0	1179	};
michael@0	1180
michael@0	1181	NS_DEFINE_STATIC_IID_ACCESSOR(Element, NS_ELEMENT_IID)
michael@0	1182
michael@0	1183	inline bool
michael@0	1184	Element::HasAttr(int32_t aNameSpaceID, nsIAtom* aName) const
michael@0	1185	{
michael@0	1186	NS_ASSERTION(nullptr != aName, "must have attribute name");
michael@0	1187	NS_ASSERTION(aNameSpaceID != kNameSpaceID_Unknown,
michael@0	1188	"must have a real namespace ID!");
michael@0	1189
michael@0	1190	return mAttrsAndChildren.IndexOfAttr(aName, aNameSpaceID) >= 0;
michael@0	1191	}
michael@0	1192
michael@0	1193	inline bool
michael@0	1194	Element::AttrValueIs(int32_t aNameSpaceID,
michael@0	1195	nsIAtom* aName,
michael@0	1196	const nsAString& aValue,
michael@0	1197	nsCaseTreatment aCaseSensitive) const
michael@0	1198	{
michael@0	1199	NS_ASSERTION(aName, "Must have attr name");
michael@0	1200	NS_ASSERTION(aNameSpaceID != kNameSpaceID_Unknown, "Must have namespace");
michael@0	1201
michael@0	1202	const nsAttrValue* val = mAttrsAndChildren.GetAttr(aName, aNameSpaceID);
michael@0	1203	return val && val->Equals(aValue, aCaseSensitive);
michael@0	1204	}
michael@0	1205
michael@0	1206	inline bool
michael@0	1207	Element::AttrValueIs(int32_t aNameSpaceID,
michael@0	1208	nsIAtom* aName,
michael@0	1209	nsIAtom* aValue,
michael@0	1210	nsCaseTreatment aCaseSensitive) const
michael@0	1211	{
michael@0	1212	NS_ASSERTION(aName, "Must have attr name");
michael@0	1213	NS_ASSERTION(aNameSpaceID != kNameSpaceID_Unknown, "Must have namespace");
michael@0	1214	NS_ASSERTION(aValue, "Null value atom");
michael@0	1215
michael@0	1216	const nsAttrValue* val = mAttrsAndChildren.GetAttr(aName, aNameSpaceID);
michael@0	1217	return val && val->Equals(aValue, aCaseSensitive);
michael@0	1218	}
michael@0	1219
michael@0	1220	} // namespace dom
michael@0	1221	} // namespace mozilla
michael@0	1222
michael@0	1223	inline mozilla::dom::Element* nsINode::AsElement()
michael@0	1224	{
michael@0	1225	MOZ_ASSERT(IsElement());
michael@0	1226	return static_cast<mozilla::dom::Element*>(this);
michael@0	1227	}
michael@0	1228
michael@0	1229	inline const mozilla::dom::Element* nsINode::AsElement() const
michael@0	1230	{
michael@0	1231	MOZ_ASSERT(IsElement());
michael@0	1232	return static_cast<const mozilla::dom::Element*>(this);
michael@0	1233	}
michael@0	1234
michael@0	1235	inline bool nsINode::HasAttributes() const
michael@0	1236	{
michael@0	1237	return IsElement() && AsElement()->HasAttrs();
michael@0	1238	}
michael@0	1239
michael@0	1240	/**
michael@0	1241	* Macros to implement Clone(). _elementName is the class for which to implement
michael@0	1242	* Clone.
michael@0	1243	*/
michael@0	1244	#define NS_IMPL_ELEMENT_CLONE(_elementName) \
michael@0	1245	nsresult \
michael@0	1246	_elementName::Clone(nsINodeInfo *aNodeInfo, nsINode **aResult) const \
michael@0	1247	{ \
michael@0	1248	*aResult = nullptr; \
michael@0	1249	already_AddRefed<nsINodeInfo> ni = \
michael@0	1250	nsCOMPtr<nsINodeInfo>(aNodeInfo).forget(); \
michael@0	1251	_elementName *it = new _elementName(ni); \
michael@0	1252	if (!it) { \
michael@0	1253	return NS_ERROR_OUT_OF_MEMORY; \
michael@0	1254	} \
michael@0	1255	\
michael@0	1256	nsCOMPtr<nsINode> kungFuDeathGrip = it; \
michael@0	1257	nsresult rv = const_cast<_elementName*>(this)->CopyInnerTo(it); \
michael@0	1258	if (NS_SUCCEEDED(rv)) { \
michael@0	1259	kungFuDeathGrip.swap(*aResult); \
michael@0	1260	} \
michael@0	1261	\
michael@0	1262	return rv; \
michael@0	1263	}
michael@0	1264
michael@0	1265	#define NS_IMPL_ELEMENT_CLONE_WITH_INIT(_elementName) \
michael@0	1266	nsresult \
michael@0	1267	_elementName::Clone(nsINodeInfo *aNodeInfo, nsINode **aResult) const \
michael@0	1268	{ \
michael@0	1269	*aResult = nullptr; \
michael@0	1270	already_AddRefed<nsINodeInfo> ni = \
michael@0	1271	nsCOMPtr<nsINodeInfo>(aNodeInfo).forget(); \
michael@0	1272	_elementName *it = new _elementName(ni); \
michael@0	1273	if (!it) { \
michael@0	1274	return NS_ERROR_OUT_OF_MEMORY; \
michael@0	1275	} \
michael@0	1276	\
michael@0	1277	nsCOMPtr<nsINode> kungFuDeathGrip = it; \
michael@0	1278	nsresult rv = it->Init(); \
michael@0	1279	nsresult rv2 = const_cast<_elementName*>(this)->CopyInnerTo(it); \
michael@0	1280	if (NS_FAILED(rv2)) { \
michael@0	1281	rv = rv2; \
michael@0	1282	} \
michael@0	1283	if (NS_SUCCEEDED(rv)) { \
michael@0	1284	kungFuDeathGrip.swap(*aResult); \
michael@0	1285	} \
michael@0	1286	\
michael@0	1287	return rv; \
michael@0	1288	}
michael@0	1289
michael@0	1290	/**
michael@0	1291	* A macro to implement the getter and setter for a given string
michael@0	1292	* valued content property. The method uses the generic GetAttr and
michael@0	1293	* SetAttr methods. We use the 5-argument form of SetAttr, because
michael@0	1294	* some consumers only implement that one, hiding superclass
michael@0	1295	* 4-argument forms.
michael@0	1296	*/
michael@0	1297	#define NS_IMPL_STRING_ATTR(_class, _method, _atom) \
michael@0	1298	NS_IMETHODIMP \
michael@0	1299	_class::Get##_method(nsAString& aValue) \
michael@0	1300	{ \
michael@0	1301	GetAttr(kNameSpaceID_None, nsGkAtoms::_atom, aValue); \
michael@0	1302	return NS_OK; \
michael@0	1303	} \
michael@0	1304	NS_IMETHODIMP \
michael@0	1305	_class::Set##_method(const nsAString& aValue) \
michael@0	1306	{ \
michael@0	1307	return SetAttr(kNameSpaceID_None, nsGkAtoms::_atom, nullptr, aValue, true); \
michael@0	1308	}
michael@0	1309
michael@0	1310	/**
michael@0	1311	* A macro to implement the getter and setter for a given boolean
michael@0	1312	* valued content property. The method uses the GetBoolAttr and
michael@0	1313	* SetBoolAttr methods.
michael@0	1314	*/
michael@0	1315	#define NS_IMPL_BOOL_ATTR(_class, _method, _atom) \
michael@0	1316	NS_IMETHODIMP \
michael@0	1317	_class::Get##_method(bool* aValue) \
michael@0	1318	{ \
michael@0	1319	*aValue = GetBoolAttr(nsGkAtoms::_atom); \
michael@0	1320	return NS_OK; \
michael@0	1321	} \
michael@0	1322	NS_IMETHODIMP \
michael@0	1323	_class::Set##_method(bool aValue) \
michael@0	1324	{ \
michael@0	1325	return SetBoolAttr(nsGkAtoms::_atom, aValue); \
michael@0	1326	}
michael@0	1327
michael@0	1328	#define NS_FORWARD_NSIDOMELEMENT_TO_GENERIC \
michael@0	1329	typedef mozilla::dom::Element Element; \
michael@0	1330	NS_IMETHOD GetTagName(nsAString& aTagName) MOZ_FINAL \
michael@0	1331	{ \
michael@0	1332	Element::GetTagName(aTagName); \
michael@0	1333	return NS_OK; \
michael@0	1334	} \
michael@0	1335	NS_IMETHOD GetClassList(nsISupports** aClassList) MOZ_FINAL \
michael@0	1336	{ \
michael@0	1337	Element::GetClassList(aClassList); \
michael@0	1338	return NS_OK; \
michael@0	1339	} \
michael@0	1340	NS_IMETHOD GetAttributes(nsIDOMMozNamedAttrMap** aAttributes) MOZ_FINAL \
michael@0	1341	{ \
michael@0	1342	NS_ADDREF(*aAttributes = Attributes()); \
michael@0	1343	return NS_OK; \
michael@0	1344	} \
michael@0	1345	using Element::GetAttribute; \
michael@0	1346	NS_IMETHOD GetAttribute(const nsAString& name, nsAString& _retval) MOZ_FINAL \
michael@0	1347	{ \
michael@0	1348	nsString attr; \
michael@0	1349	GetAttribute(name, attr); \
michael@0	1350	_retval = attr; \
michael@0	1351	return NS_OK; \
michael@0	1352	} \
michael@0	1353	NS_IMETHOD GetAttributeNS(const nsAString& namespaceURI, \
michael@0	1354	const nsAString& localName, \
michael@0	1355	nsAString& _retval) MOZ_FINAL \
michael@0	1356	{ \
michael@0	1357	Element::GetAttributeNS(namespaceURI, localName, _retval); \
michael@0	1358	return NS_OK; \
michael@0	1359	} \
michael@0	1360	NS_IMETHOD SetAttribute(const nsAString& name, \
michael@0	1361	const nsAString& value) \
michael@0	1362	{ \
michael@0	1363	mozilla::ErrorResult rv; \
michael@0	1364	Element::SetAttribute(name, value, rv); \
michael@0	1365	return rv.ErrorCode(); \
michael@0	1366	} \
michael@0	1367	NS_IMETHOD SetAttributeNS(const nsAString& namespaceURI, \
michael@0	1368	const nsAString& qualifiedName, \
michael@0	1369	const nsAString& value) MOZ_FINAL \
michael@0	1370	{ \
michael@0	1371	mozilla::ErrorResult rv; \
michael@0	1372	Element::SetAttributeNS(namespaceURI, qualifiedName, value, rv); \
michael@0	1373	return rv.ErrorCode(); \
michael@0	1374	} \
michael@0	1375	using Element::RemoveAttribute; \
michael@0	1376	NS_IMETHOD RemoveAttribute(const nsAString& name) MOZ_FINAL \
michael@0	1377	{ \
michael@0	1378	mozilla::ErrorResult rv; \
michael@0	1379	RemoveAttribute(name, rv); \
michael@0	1380	return rv.ErrorCode(); \
michael@0	1381	} \
michael@0	1382	NS_IMETHOD RemoveAttributeNS(const nsAString& namespaceURI, \
michael@0	1383	const nsAString& localName) MOZ_FINAL \
michael@0	1384	{ \
michael@0	1385	mozilla::ErrorResult rv; \
michael@0	1386	Element::RemoveAttributeNS(namespaceURI, localName, rv); \
michael@0	1387	return rv.ErrorCode(); \
michael@0	1388	} \
michael@0	1389	using Element::HasAttribute; \
michael@0	1390	NS_IMETHOD HasAttribute(const nsAString& name, \
michael@0	1391	bool* _retval) MOZ_FINAL \
michael@0	1392	{ \
michael@0	1393	*_retval = HasAttribute(name); \
michael@0	1394	return NS_OK; \
michael@0	1395	} \
michael@0	1396	NS_IMETHOD HasAttributeNS(const nsAString& namespaceURI, \
michael@0	1397	const nsAString& localName, \
michael@0	1398	bool* _retval) MOZ_FINAL \
michael@0	1399	{ \
michael@0	1400	*_retval = Element::HasAttributeNS(namespaceURI, localName); \
michael@0	1401	return NS_OK; \
michael@0	1402	} \
michael@0	1403	NS_IMETHOD GetAttributeNode(const nsAString& name, \
michael@0	1404	nsIDOMAttr** _retval) MOZ_FINAL \
michael@0	1405	{ \
michael@0	1406	NS_IF_ADDREF(*_retval = Element::GetAttributeNode(name)); \
michael@0	1407	return NS_OK; \
michael@0	1408	} \
michael@0	1409	NS_IMETHOD SetAttributeNode(nsIDOMAttr* newAttr, \
michael@0	1410	nsIDOMAttr** _retval) MOZ_FINAL \
michael@0	1411	{ \
michael@0	1412	if (!newAttr) { \
michael@0	1413	return NS_ERROR_INVALID_POINTER; \
michael@0	1414	} \
michael@0	1415	mozilla::ErrorResult rv; \
michael@0	1416	mozilla::dom::Attr* attr = static_cast<mozilla::dom::Attr*>(newAttr); \
michael@0	1417	*_retval = Element::SetAttributeNode(*attr, rv).take(); \
michael@0	1418	return rv.ErrorCode(); \
michael@0	1419	} \
michael@0	1420	NS_IMETHOD RemoveAttributeNode(nsIDOMAttr* oldAttr, \
michael@0	1421	nsIDOMAttr** _retval) MOZ_FINAL \
michael@0	1422	{ \
michael@0	1423	if (!oldAttr) { \
michael@0	1424	return NS_ERROR_INVALID_POINTER; \
michael@0	1425	} \
michael@0	1426	mozilla::ErrorResult rv; \
michael@0	1427	mozilla::dom::Attr* attr = static_cast<mozilla::dom::Attr*>(oldAttr); \
michael@0	1428	*_retval = Element::RemoveAttributeNode(*attr, rv).take(); \
michael@0	1429	return rv.ErrorCode(); \
michael@0	1430	} \
michael@0	1431	NS_IMETHOD GetAttributeNodeNS(const nsAString& namespaceURI, \
michael@0	1432	const nsAString& localName, \
michael@0	1433	nsIDOMAttr** _retval) MOZ_FINAL \
michael@0	1434	{ \
michael@0	1435	NS_IF_ADDREF(*_retval = Element::GetAttributeNodeNS(namespaceURI, \
michael@0	1436	localName)); \
michael@0	1437	return NS_OK; \
michael@0	1438	} \
michael@0	1439	NS_IMETHOD SetAttributeNodeNS(nsIDOMAttr* newAttr, \
michael@0	1440	nsIDOMAttr** _retval) MOZ_FINAL \
michael@0	1441	{ \
michael@0	1442	mozilla::ErrorResult rv; \
michael@0	1443	mozilla::dom::Attr* attr = static_cast<mozilla::dom::Attr*>(newAttr); \
michael@0	1444	*_retval = Element::SetAttributeNodeNS(*attr, rv).take(); \
michael@0	1445	return rv.ErrorCode(); \
michael@0	1446	} \
michael@0	1447	NS_IMETHOD GetElementsByTagName(const nsAString& name, \
michael@0	1448	nsIDOMHTMLCollection** _retval) MOZ_FINAL \
michael@0	1449	{ \
michael@0	1450	Element::GetElementsByTagName(name, _retval); \
michael@0	1451	return NS_OK; \
michael@0	1452	} \
michael@0	1453	NS_IMETHOD GetElementsByTagNameNS(const nsAString& namespaceURI, \
michael@0	1454	const nsAString& localName, \
michael@0	1455	nsIDOMHTMLCollection** _retval) MOZ_FINAL \
michael@0	1456	{ \
michael@0	1457	return Element::GetElementsByTagNameNS(namespaceURI, localName, \
michael@0	1458	_retval); \
michael@0	1459	} \
michael@0	1460	NS_IMETHOD GetElementsByClassName(const nsAString& classes, \
michael@0	1461	nsIDOMHTMLCollection** _retval) MOZ_FINAL \
michael@0	1462	{ \
michael@0	1463	return Element::GetElementsByClassName(classes, _retval); \
michael@0	1464	} \
michael@0	1465	NS_IMETHOD GetChildElements(nsIDOMNodeList** aChildElements) MOZ_FINAL \
michael@0	1466	{ \
michael@0	1467	nsIHTMLCollection* list = FragmentOrElement::Children(); \
michael@0	1468	return CallQueryInterface(list, aChildElements); \
michael@0	1469	} \
michael@0	1470	NS_IMETHOD GetFirstElementChild(nsIDOMElement** aFirstElementChild) MOZ_FINAL \
michael@0	1471	{ \
michael@0	1472	Element* element = Element::GetFirstElementChild(); \
michael@0	1473	if (!element) { \
michael@0	1474	*aFirstElementChild = nullptr; \
michael@0	1475	return NS_OK; \
michael@0	1476	} \
michael@0	1477	return CallQueryInterface(element, aFirstElementChild); \
michael@0	1478	} \
michael@0	1479	NS_IMETHOD GetLastElementChild(nsIDOMElement** aLastElementChild) MOZ_FINAL \
michael@0	1480	{ \
michael@0	1481	Element* element = Element::GetLastElementChild(); \
michael@0	1482	if (!element) { \
michael@0	1483	*aLastElementChild = nullptr; \
michael@0	1484	return NS_OK; \
michael@0	1485	} \
michael@0	1486	return CallQueryInterface(element, aLastElementChild); \
michael@0	1487	} \
michael@0	1488	NS_IMETHOD GetPreviousElementSibling(nsIDOMElement** aPreviousElementSibling) \
michael@0	1489	MOZ_FINAL \
michael@0	1490	{ \
michael@0	1491	Element* element = Element::GetPreviousElementSibling(); \
michael@0	1492	if (!element) { \
michael@0	1493	*aPreviousElementSibling = nullptr; \
michael@0	1494	return NS_OK; \
michael@0	1495	} \
michael@0	1496	return CallQueryInterface(element, aPreviousElementSibling); \
michael@0	1497	} \
michael@0	1498	NS_IMETHOD GetNextElementSibling(nsIDOMElement** aNextElementSibling) \
michael@0	1499	MOZ_FINAL \
michael@0	1500	{ \
michael@0	1501	Element* element = Element::GetNextElementSibling(); \
michael@0	1502	if (!element) { \
michael@0	1503	*aNextElementSibling = nullptr; \
michael@0	1504	return NS_OK; \
michael@0	1505	} \
michael@0	1506	return CallQueryInterface(element, aNextElementSibling); \
michael@0	1507	} \
michael@0	1508	NS_IMETHOD GetChildElementCount(uint32_t* aChildElementCount) MOZ_FINAL \
michael@0	1509	{ \
michael@0	1510	*aChildElementCount = Element::ChildElementCount(); \
michael@0	1511	return NS_OK; \
michael@0	1512	} \
michael@0	1513	NS_IMETHOD MozRemove() MOZ_FINAL \
michael@0	1514	{ \
michael@0	1515	nsINode::Remove(); \
michael@0	1516	return NS_OK; \
michael@0	1517	} \
michael@0	1518	NS_IMETHOD GetClientRects(nsIDOMClientRectList** _retval) MOZ_FINAL \
michael@0	1519	{ \
michael@0	1520	*_retval = Element::GetClientRects().take(); \
michael@0	1521	return NS_OK; \
michael@0	1522	} \
michael@0	1523	NS_IMETHOD GetBoundingClientRect(nsIDOMClientRect** _retval) MOZ_FINAL \
michael@0	1524	{ \
michael@0	1525	*_retval = Element::GetBoundingClientRect().take(); \
michael@0	1526	return NS_OK; \
michael@0	1527	} \
michael@0	1528	NS_IMETHOD GetScrollTop(int32_t* aScrollTop) MOZ_FINAL \
michael@0	1529	{ \
michael@0	1530	*aScrollTop = Element::ScrollTop(); \
michael@0	1531	return NS_OK; \
michael@0	1532	} \
michael@0	1533	NS_IMETHOD SetScrollTop(int32_t aScrollTop) MOZ_FINAL \
michael@0	1534	{ \
michael@0	1535	Element::SetScrollTop(aScrollTop); \
michael@0	1536	return NS_OK; \
michael@0	1537	} \
michael@0	1538	NS_IMETHOD GetScrollLeft(int32_t* aScrollLeft) MOZ_FINAL \
michael@0	1539	{ \
michael@0	1540	*aScrollLeft = Element::ScrollLeft(); \
michael@0	1541	return NS_OK; \
michael@0	1542	} \
michael@0	1543	NS_IMETHOD SetScrollLeft(int32_t aScrollLeft) MOZ_FINAL \
michael@0	1544	{ \
michael@0	1545	Element::SetScrollLeft(aScrollLeft); \
michael@0	1546	return NS_OK; \
michael@0	1547	} \
michael@0	1548	NS_IMETHOD GetScrollWidth(int32_t* aScrollWidth) MOZ_FINAL \
michael@0	1549	{ \
michael@0	1550	*aScrollWidth = Element::ScrollWidth(); \
michael@0	1551	return NS_OK; \
michael@0	1552	} \
michael@0	1553	NS_IMETHOD GetScrollHeight(int32_t* aScrollHeight) MOZ_FINAL \
michael@0	1554	{ \
michael@0	1555	*aScrollHeight = Element::ScrollHeight(); \
michael@0	1556	return NS_OK; \
michael@0	1557	} \
michael@0	1558	NS_IMETHOD GetClientTop(int32_t* aClientTop) MOZ_FINAL \
michael@0	1559	{ \
michael@0	1560	*aClientTop = Element::ClientTop(); \
michael@0	1561	return NS_OK; \
michael@0	1562	} \
michael@0	1563	NS_IMETHOD GetClientLeft(int32_t* aClientLeft) MOZ_FINAL \
michael@0	1564	{ \
michael@0	1565	*aClientLeft = Element::ClientLeft(); \
michael@0	1566	return NS_OK; \
michael@0	1567	} \
michael@0	1568	NS_IMETHOD GetClientWidth(int32_t* aClientWidth) MOZ_FINAL \
michael@0	1569	{ \
michael@0	1570	*aClientWidth = Element::ClientWidth(); \
michael@0	1571	return NS_OK; \
michael@0	1572	} \
michael@0	1573	NS_IMETHOD GetClientHeight(int32_t* aClientHeight) MOZ_FINAL \
michael@0	1574	{ \
michael@0	1575	*aClientHeight = Element::ClientHeight(); \
michael@0	1576	return NS_OK; \
michael@0	1577	} \
michael@0	1578	NS_IMETHOD GetScrollLeftMax(int32_t* aScrollLeftMax) MOZ_FINAL \
michael@0	1579	{ \
michael@0	1580	*aScrollLeftMax = Element::ScrollLeftMax(); \
michael@0	1581	return NS_OK; \
michael@0	1582	} \
michael@0	1583	NS_IMETHOD GetScrollTopMax(int32_t* aScrollTopMax) MOZ_FINAL \
michael@0	1584	{ \
michael@0	1585	*aScrollTopMax = Element::ScrollTopMax(); \
michael@0	1586	return NS_OK; \
michael@0	1587	} \
michael@0	1588	NS_IMETHOD MozMatchesSelector(const nsAString& selector, \
michael@0	1589	bool* _retval) MOZ_FINAL \
michael@0	1590	{ \
michael@0	1591	mozilla::ErrorResult rv; \
michael@0	1592	*_retval = Element::MozMatchesSelector(selector, rv); \
michael@0	1593	return rv.ErrorCode(); \
michael@0	1594	} \
michael@0	1595	NS_IMETHOD SetCapture(bool retargetToElement) MOZ_FINAL \
michael@0	1596	{ \
michael@0	1597	Element::SetCapture(retargetToElement); \
michael@0	1598	return NS_OK; \
michael@0	1599	} \
michael@0	1600	NS_IMETHOD ReleaseCapture(void) MOZ_FINAL \
michael@0	1601	{ \
michael@0	1602	Element::ReleaseCapture(); \
michael@0	1603	return NS_OK; \
michael@0	1604	} \
michael@0	1605	NS_IMETHOD MozRequestFullScreen(void) MOZ_FINAL \
michael@0	1606	{ \
michael@0	1607	Element::MozRequestFullScreen(); \
michael@0	1608	return NS_OK; \
michael@0	1609	} \
michael@0	1610	NS_IMETHOD MozRequestPointerLock(void) MOZ_FINAL \
michael@0	1611	{ \
michael@0	1612	Element::MozRequestPointerLock(); \
michael@0	1613	return NS_OK; \
michael@0	1614	} \
michael@0	1615	using nsINode::QuerySelector; \
michael@0	1616	NS_IMETHOD QuerySelector(const nsAString& aSelector, \
michael@0	1617	nsIDOMElement **aReturn) MOZ_FINAL \
michael@0	1618	{ \
michael@0	1619	return nsINode::QuerySelector(aSelector, aReturn); \
michael@0	1620	} \
michael@0	1621	using nsINode::QuerySelectorAll; \
michael@0	1622	NS_IMETHOD QuerySelectorAll(const nsAString& aSelector, \
michael@0	1623	nsIDOMNodeList **aReturn) MOZ_FINAL \
michael@0	1624	{ \
michael@0	1625	return nsINode::QuerySelectorAll(aSelector, aReturn); \
michael@0	1626	}
michael@0	1627
michael@0	1628	#endif // mozilla_dom_Element_h__