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gecko-dev/editor/libeditor/base/nsEditor.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Daniel Glazman <glazman@netscape.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef __editor_h__
#define __editor_h__
#include "nsCOMPtr.h"
#include "nsWeakReference.h"
#include "nsIEditor.h"
#include "nsIEditorIMESupport.h"
#include "nsIPhonetic.h"
#include "nsIAtom.h"
#include "nsIDOMDocument.h"
#include "nsISelection.h"
#include "nsIDOMCharacterData.h"
#include "nsIPrivateTextRange.h"
#include "nsITransactionManager.h"
#include "nsIComponentManager.h"
#include "nsISupportsArray.h"
#include "nsICSSStyleSheet.h"
#include "nsIDTD.h"
#include "nsIDOMElement.h"
#include "nsSelectionState.h"
class nsIEditActionListener;
class nsIDocumentStateListener;
class nsIDOMCharacterData;
class nsIDOMRange;
class nsIPresShell;
class nsIViewManager;
class ChangeAttributeTxn;
class CreateElementTxn;
class InsertElementTxn;
class DeleteElementTxn;
class InsertTextTxn;
class DeleteTextTxn;
class SplitElementTxn;
class JoinElementTxn;
class EditAggregateTxn;
class nsVoidArray;
class nsISupportsArray;
class nsILocale;
class IMETextTxn;
class AddStyleSheetTxn;
class RemoveStyleSheetTxn;
class nsIFile;
class nsISelectionController;
#define kMOZEditorBogusNodeAttr NS_LITERAL_STRING("_moz_editor_bogus_node")
#define kMOZEditorBogusNodeValue NS_LITERAL_STRING("TRUE")
/** implementation of an editor object. it will be the controller/focal point
* for the main editor services. i.e. the GUIManager, publishing, transaction
* manager, event interfaces. the idea for the event interfaces is to have them
* delegate the actual commands to the editor independent of the XPFE implementation.
*/
class nsEditor : public nsIEditor,
public nsIEditorIMESupport,
public nsSupportsWeakReference,
public nsIPhonetic
{
public:
enum IterDirection
{
kIterForward,
kIterBackward
};
enum OperationID
{
kOpIgnore = -1,
kOpNone = 0,
kOpUndo,
kOpRedo,
kOpInsertNode,
kOpCreateNode,
kOpDeleteNode,
kOpSplitNode,
kOpJoinNode,
kOpDeleteSelection,
// text commands
kOpInsertBreak = 1000,
kOpInsertText = 1001,
kOpInsertIMEText = 1002,
kOpDeleteText = 1003
};
/** The default constructor. This should suffice. the setting of the interfaces is done
* after the construction of the editor class.
*/
nsEditor();
/** The default destructor. This should suffice. Should this be pure virtual
* for someone to derive from the nsEditor later? I dont believe so.
*/
virtual ~nsEditor();
//Interfaces for addref and release and queryinterface
//NOTE: Use NS_DECL_ISUPPORTS_INHERITED in any class inherited from nsEditor
NS_DECL_ISUPPORTS
/* ------------ utility methods -------------- */
NS_IMETHOD GetPresShell(nsIPresShell **aPS);
void NotifyEditorObservers(void);
/* ------------ nsIEditor methods -------------- */
NS_DECL_NSIEDITOR
/* ------------ nsIEditorIMESupport methods -------------- */
NS_IMETHOD BeginComposition(nsTextEventReply* aReply);
NS_IMETHOD QueryComposition(nsTextEventReply* aReply);
NS_IMETHOD SetCompositionString(const nsAString& aCompositionString, nsIPrivateTextRangeList* aTextRangeList,nsTextEventReply* aReply);
NS_IMETHOD EndComposition(void);
NS_IMETHOD ForceCompositionEnd(void);
NS_IMETHOD GetReconversionString(nsReconversionEventReply *aReply);
// nsIPhonetic
NS_DECL_NSIPHONETIC
public:
NS_IMETHOD InsertTextImpl(const nsAString& aStringToInsert,
nsCOMPtr<nsIDOMNode> *aInOutNode,
PRInt32 *aInOutOffset,
nsIDOMDocument *aDoc);
NS_IMETHOD InsertTextIntoTextNodeImpl(const nsAString& aStringToInsert,
nsIDOMCharacterData *aTextNode,
PRInt32 aOffset, PRBool suppressIME=PR_FALSE);
NS_IMETHOD DeleteSelectionImpl(EDirection aAction);
NS_IMETHOD DeleteSelectionAndCreateNode(const nsAString& aTag,
nsIDOMNode ** aNewNode);
/* helper routines for node/parent manipulations */
nsresult ReplaceContainer(nsIDOMNode *inNode,
nsCOMPtr<nsIDOMNode> *outNode,
const nsAString &aNodeType,
const nsAString *aAttribute = nsnull,
const nsAString *aValue = nsnull,
PRBool aCloneAttributes = PR_FALSE);
nsresult RemoveContainer(nsIDOMNode *inNode);
nsresult InsertContainerAbove(nsIDOMNode *inNode,
nsCOMPtr<nsIDOMNode> *outNode,
const nsAString &aNodeType,
const nsAString *aAttribute = nsnull,
const nsAString *aValue = nsnull);
nsresult MoveNode(nsIDOMNode *aNode, nsIDOMNode *aParent, PRInt32 aOffset);
/* Method to replace certain CreateElementNS() calls.
Arguments:
nsString& aTag - tag you want
nsIContent** aContent - returned Content that was created with above namespace.
*/
nsresult CreateHTMLContent(const nsAString& aTag, nsIContent** aContent);
protected:
/*
NS_IMETHOD SetProperties(nsVoidArray *aPropList);
NS_IMETHOD GetProperties(nsVoidArray *aPropList);
*/
nsCString mContentMIMEType; // MIME type of the doc we are editing.
/** create a transaction for setting aAttribute to aValue on aElement
*/
NS_IMETHOD CreateTxnForSetAttribute(nsIDOMElement *aElement,
const nsAString & aAttribute,
const nsAString & aValue,
ChangeAttributeTxn ** aTxn);
/** create a transaction for removing aAttribute on aElement
*/
NS_IMETHOD CreateTxnForRemoveAttribute(nsIDOMElement *aElement,
const nsAString & aAttribute,
ChangeAttributeTxn ** aTxn);
/** create a transaction for creating a new child node of aParent of type aTag.
*/
NS_IMETHOD CreateTxnForCreateElement(const nsAString & aTag,
nsIDOMNode *aParent,
PRInt32 aPosition,
CreateElementTxn ** aTxn);
/** create a transaction for inserting aNode as a child of aParent.
*/
NS_IMETHOD CreateTxnForInsertElement(nsIDOMNode * aNode,
nsIDOMNode * aParent,
PRInt32 aOffset,
InsertElementTxn ** aTxn);
/** create a transaction for removing aElement from its parent.
*/
NS_IMETHOD CreateTxnForDeleteElement(nsIDOMNode * aElement,
DeleteElementTxn ** aTxn);
NS_IMETHOD CreateTxnForDeleteSelection(EDirection aAction,
EditAggregateTxn ** aTxn);
NS_IMETHOD CreateTxnForDeleteInsertionPoint(nsIDOMRange *aRange,
EDirection aAction,
EditAggregateTxn *aTxn);
/** create a transaction for inserting aStringToInsert into aTextNode
* if aTextNode is null, the string is inserted at the current selection.
*/
NS_IMETHOD CreateTxnForInsertText(const nsAString & aStringToInsert,
nsIDOMCharacterData *aTextNode,
PRInt32 aOffset,
InsertTextTxn ** aTxn);
NS_IMETHOD CreateTxnForIMEText(const nsAString & aStringToInsert,
IMETextTxn ** aTxn);
/** create a transaction for adding a style sheet
*/
NS_IMETHOD CreateTxnForAddStyleSheet(nsICSSStyleSheet* aSheet, AddStyleSheetTxn* *aTxn);
/** create a transaction for removing a style sheet
*/
NS_IMETHOD CreateTxnForRemoveStyleSheet(nsICSSStyleSheet* aSheet, RemoveStyleSheetTxn* *aTxn);
NS_IMETHOD DeleteText(nsIDOMCharacterData *aElement,
PRUint32 aOffset,
PRUint32 aLength);
// NS_IMETHOD DeleteRange(nsIDOMRange *aRange);
NS_IMETHOD CreateTxnForDeleteText(nsIDOMCharacterData *aElement,
PRUint32 aOffset,
PRUint32 aLength,
DeleteTextTxn **aTxn);
NS_IMETHOD CreateTxnForSplitNode(nsIDOMNode *aNode,
PRUint32 aOffset,
SplitElementTxn **aTxn);
NS_IMETHOD CreateTxnForJoinNode(nsIDOMNode *aLeftNode,
nsIDOMNode *aRightNode,
JoinElementTxn **aTxn);
NS_IMETHOD DeleteSelectionAndPrepareToCreateNode(nsCOMPtr<nsIDOMNode> &parentSelectedNode,
PRInt32& offsetOfNewNode);
// called after a transaction is done successfully
NS_IMETHOD DoAfterDoTransaction(nsITransaction *aTxn);
// called after a transaction is undone successfully
NS_IMETHOD DoAfterUndoTransaction();
// called after a transaction is redone successfully
NS_IMETHOD DoAfterRedoTransaction();
typedef enum {
eDocumentCreated,
eDocumentToBeDestroyed,
eDocumentStateChanged
} TDocumentListenerNotification;
// tell the doc state listeners that the doc state has changed
NS_IMETHOD NotifyDocumentListeners(TDocumentListenerNotification aNotificationType);
/** make the given selection span the entire document */
NS_IMETHOD SelectEntireDocument(nsISelection *aSelection);
/* Helper for output routines -- we expect subclasses to override this */
NS_IMETHOD GetWrapWidth(PRInt32* aWrapCol);
/** helper method for scrolling the selection into view after
* an edit operation. aScrollToAnchor should be PR_TRUE if you
* want to scroll to the point where the selection was started.
* If PR_FALSE, it attempts to scroll the end of the selection into view.
*
* Editor methods *should* call this method instead of the versions
* in the various selection interfaces, since this version makes sure
* that the editor's sync/async settings for reflowing, painting, and
* scrolling match.
*/
NS_IMETHOD ScrollSelectionIntoView(PRBool aScrollToAnchor);
// stub. see comment in source.
virtual PRBool IsBlockNode(nsIDOMNode *aNode);
// helper for GetPriorNode
nsresult GetPriorNodeImpl(nsIDOMNode *aCurrentNode,
PRBool aEditableNode,
nsCOMPtr<nsIDOMNode> *aResultNode,
PRBool bNoBlockCrossing = PR_FALSE);
// helper for GetNextNode
nsresult GetNextNodeImpl(nsIDOMNode *aCurrentNode,
PRBool aEditableNode,
nsCOMPtr<nsIDOMNode> *aResultNode,
PRBool bNoBlockCrossing = PR_FALSE);
public:
/** All editor operations which alter the doc should be prefaced
* with a call to StartOperation, naming the action and direction */
NS_IMETHOD StartOperation(PRInt32 opID, nsIEditor::EDirection aDirection);
/** All editor operations which alter the doc should be followed
* with a call to EndOperation */
NS_IMETHOD EndOperation();
/** routines for managing the preservation of selection across
* various editor actions */
PRBool ArePreservingSelection();
nsresult PreserveSelectionAcrossActions(nsISelection *aSel);
nsresult RestorePreservedSelection(nsISelection *aSel);
void StopPreservingSelection();
/** return the string that represents text nodes in the content tree */
static nsresult GetTextNodeTag(nsAString& aOutString);
/**
* SplitNode() creates a new node identical to an existing node, and split the contents between the two nodes
* @param aExistingRightNode the node to split. It will become the new node's next sibling.
* @param aOffset the offset of aExistingRightNode's content|children to do the split at
* @param aNewLeftNode [OUT] the new node resulting from the split, becomes aExistingRightNode's previous sibling.
* @param aParent the parent of aExistingRightNode
*/
nsresult SplitNodeImpl(nsIDOMNode *aExistingRightNode,
PRInt32 aOffset,
nsIDOMNode *aNewLeftNode,
nsIDOMNode *aParent);
/**
* JoinNodes() takes 2 nodes and merge their content|children.
* @param aNodeToKeep The node that will remain after the join.
* @param aNodeToJoin The node that will be joined with aNodeToKeep.
* There is no requirement that the two nodes be of the same type.
* @param aParent The parent of aNodeToKeep
* @param aNodeToKeepIsFirst if PR_TRUE, the contents|children of aNodeToKeep come before the
* contents|children of aNodeToJoin, otherwise their positions are switched.
*/
nsresult JoinNodesImpl(nsIDOMNode *aNodeToKeep,
nsIDOMNode *aNodeToJoin,
nsIDOMNode *aParent,
PRBool aNodeToKeepIsFirst);
/**
* Set aOffset to the offset of aChild in aParent.
* Returns an error if aChild is not an immediate child of aParent.
*/
static nsresult GetChildOffset(nsIDOMNode *aChild,
nsIDOMNode *aParent,
PRInt32 &aOffset);
/**
* Set aParent to the parent of aChild.
* Set aOffset to the offset of aChild in aParent.
*/
static nsresult GetNodeLocation(nsIDOMNode *aChild,
nsCOMPtr<nsIDOMNode> *aParent,
PRInt32 *aOffset);
/** returns the number of things inside aNode in the out-param aCount.
* @param aNode is the node to get the length of.
* If aNode is text, returns number of characters.
* If not, returns number of children nodes.
* @param aCount [OUT] the result of the above calculation.
*/
static nsresult GetLengthOfDOMNode(nsIDOMNode *aNode, PRUint32 &aCount);
/** get the node immediately prior to aCurrentNode
* @param aCurrentNode the node from which we start the search
* @param aEditableNode if PR_TRUE, only return an editable node
* @param aResultNode [OUT] the node that occurs before aCurrentNode in the tree,
* skipping non-editable nodes if aEditableNode is PR_TRUE.
* If there is no prior node, aResultNode will be nsnull.
*/
nsresult GetPriorNode(nsIDOMNode *aCurrentNode,
PRBool aEditableNode,
nsCOMPtr<nsIDOMNode> *aResultNode,
PRBool bNoBlockCrossing = PR_FALSE);
// and another version that takes a {parent,offset} pair rather than a node
nsresult GetPriorNode(nsIDOMNode *aParentNode,
PRInt32 aOffset,
PRBool aEditableNode,
nsCOMPtr<nsIDOMNode> *aResultNode,
PRBool bNoBlockCrossing = PR_FALSE);
/** get the node immediately after to aCurrentNode
* @param aCurrentNode the node from which we start the search
* @param aEditableNode if PR_TRUE, only return an editable node
* @param aResultNode [OUT] the node that occurs after aCurrentNode in the tree,
* skipping non-editable nodes if aEditableNode is PR_TRUE.
* If there is no prior node, aResultNode will be nsnull.
*/
nsresult GetNextNode(nsIDOMNode *aCurrentNode,
PRBool aEditableNode,
nsCOMPtr<nsIDOMNode> *aResultNode,
PRBool bNoBlockCrossing = PR_FALSE);
// and another version that takes a {parent,offset} pair rather than a node
nsresult GetNextNode(nsIDOMNode *aParentNode,
PRInt32 aOffset,
PRBool aEditableNode,
nsCOMPtr<nsIDOMNode> *aResultNode,
PRBool bNoBlockCrossing = PR_FALSE);
/** Get the rightmost child of aCurrentNode;
* return nsnull if aCurrentNode has no children.
*/
nsCOMPtr<nsIDOMNode> GetRightmostChild(nsIDOMNode *aCurrentNode,
PRBool bNoBlockCrossing = PR_FALSE);
/** Get the leftmost child of aCurrentNode;
* return nsnull if aCurrentNode has no children.
*/
nsCOMPtr<nsIDOMNode> GetLeftmostChild(nsIDOMNode *aCurrentNode,
PRBool bNoBlockCrossing = PR_FALSE);
/** returns PR_TRUE if aNode is of the type implied by aTag */
static inline PRBool NodeIsType(nsIDOMNode *aNode, nsIAtom *aTag)
{
return GetTag(aNode) == aTag;
}
// we should get rid of this method if we can
static inline PRBool NodeIsTypeString(nsIDOMNode *aNode, const nsAString &aTag)
{
nsIAtom *nodeAtom = GetTag(aNode);
return nodeAtom && nodeAtom->Equals(aTag);
}
/** returns PR_TRUE if aParent can contain a child of type aTag */
PRBool CanContainTag(nsIDOMNode* aParent, const nsAString &aTag);
PRBool TagCanContain(const nsAString &aParentTag, nsIDOMNode* aChild);
virtual PRBool TagCanContainTag(const nsAString &aParentTag, const nsAString &aChildTag);
/** returns PR_TRUE if aNode is our root node */
PRBool IsRootNode(nsIDOMNode *inNode);
/** returns PR_TRUE if aNode is a descendant of our root node */
PRBool IsDescendantOfBody(nsIDOMNode *inNode);
/** returns PR_TRUE if aNode is a container */
PRBool IsContainer(nsIDOMNode *aNode);
/** returns PR_TRUE if aNode is an editable node */
PRBool IsEditable(nsIDOMNode *aNode);
virtual PRBool IsTextInDirtyFrameVisible(nsIDOMNode *aNode);
/** returns PR_TRUE if aNode is a MozEditorBogus node */
PRBool IsMozEditorBogusNode(nsIDOMNode *aNode);
/** returns PR_TRUE if content is an merely formatting whitespacce */
PRBool IsEmptyTextContent(nsIContent* aContent);
/** counts number of editable child nodes */
nsresult CountEditableChildren(nsIDOMNode *aNode, PRUint32 &outCount);
/** Find the deep first and last children. Returned nodes are AddReffed */
nsresult GetFirstEditableNode(nsIDOMNode *aRoot, nsCOMPtr<nsIDOMNode> *outFirstNode);
#ifdef XXX_DEAD_CODE
nsresult GetLastEditableNode(nsIDOMNode *aRoot, nsCOMPtr<nsIDOMNode> *outLastNode);
#endif
nsresult GetIMEBufferLength(PRInt32* length);
PRBool IsIMEComposing(); /* test if IME is in composition state */
void SetIsIMEComposing(); /* call this before |IsIMEComposing()| */
/** from html rules code - migration in progress */
static nsresult GetTagString(nsIDOMNode *aNode, nsAString& outString);
static nsIAtom *GetTag(nsIDOMNode *aNode);
virtual PRBool NodesSameType(nsIDOMNode *aNode1, nsIDOMNode *aNode2);
static PRBool IsTextOrElementNode(nsIDOMNode *aNode);
static PRBool IsTextNode(nsIDOMNode *aNode);
static PRInt32 GetIndexOf(nsIDOMNode *aParent, nsIDOMNode *aChild);
static nsCOMPtr<nsIDOMNode> GetChildAt(nsIDOMNode *aParent, PRInt32 aOffset);
static nsresult GetStartNodeAndOffset(nsISelection *aSelection, nsCOMPtr<nsIDOMNode> *outStartNode, PRInt32 *outStartOffset);
static nsresult GetEndNodeAndOffset(nsISelection *aSelection, nsCOMPtr<nsIDOMNode> *outEndNode, PRInt32 *outEndOffset);
#if DEBUG_JOE
static void DumpNode(nsIDOMNode *aNode, PRInt32 indent=0);
#endif
// Helpers to add a node to the selection.
// Used by table cell selection methods
nsresult CreateRange(nsIDOMNode *aStartParent, PRInt32 aStartOffset,
nsIDOMNode *aEndParent, PRInt32 aEndOffset,
nsIDOMRange **aRange);
// Creates a range with just the supplied node and appends that to the selection
nsresult AppendNodeToSelectionAsRange(nsIDOMNode *aNode);
// When you are using AppendNodeToSelectionAsRange, call this first to start a new selection
nsresult ClearSelection();
nsresult IsPreformatted(nsIDOMNode *aNode, PRBool *aResult);
nsresult SplitNodeDeep(nsIDOMNode *aNode,
nsIDOMNode *aSplitPointParent,
PRInt32 aSplitPointOffset,
PRInt32 *outOffset,
PRBool aNoEmptyContainers = PR_FALSE,
nsCOMPtr<nsIDOMNode> *outLeftNode = 0,
nsCOMPtr<nsIDOMNode> *outRightNode = 0);
nsresult JoinNodeDeep(nsIDOMNode *aLeftNode, nsIDOMNode *aRightNode, nsCOMPtr<nsIDOMNode> *aOutJoinNode, PRInt32 *outOffset);
nsresult GetString(const nsAString& name, nsAString& value);
nsresult BeginUpdateViewBatch(void);
virtual nsresult EndUpdateViewBatch(void);
PRBool GetShouldTxnSetSelection();
public:
// Argh! These transaction names are used by PlaceholderTxn and
// nsPlaintextEditor. They should be localized to those classes.
static nsIAtom *gTypingTxnName;
static nsIAtom *gIMETxnName;
static nsIAtom *gDeleteTxnName;
protected:
PRUint32 mModCount; // number of modifications (for undo/redo stack)
PRUint32 mFlags; // behavior flags. See nsPlaintextEditor.h for the flags we use.
nsWeakPtr mPresShellWeak; // weak reference to the nsIPresShell
nsWeakPtr mSelConWeak; // weak reference to the nsISelectionController
nsIViewManager *mViewManager;
PRInt32 mUpdateCount;
nsCOMPtr<nsITransactionManager> mTxnMgr;
nsWeakPtr mPlaceHolderTxn; // weak reference to placeholder for begin/end batch purposes
nsIAtom *mPlaceHolderName; // name of placeholder transaction
PRInt32 mPlaceHolderBatch; // nesting count for batching
nsSelectionState *mSelState; // saved selection state for placeholder txn batching
nsSelectionState mSavedSel; // cached selection for nsAutoSelectionReset
nsRangeUpdater mRangeUpdater; // utility class object for maintaining preserved ranges
PRBool mShouldTxnSetSelection; // turn off for conservative selection adjustment by txns
nsCOMPtr<nsIDOMElement> mBodyElement; // cached body node
PRInt32 mAction; // the current editor action
EDirection mDirection; // the current direction of editor action
// data necessary to build IME transactions
PRBool mInIMEMode; // are we inside an IME composition?
nsIPrivateTextRangeList* mIMETextRangeList; // IME special selection ranges
nsCOMPtr<nsIDOMCharacterData> mIMETextNode; // current IME text node
PRUint32 mIMETextOffset; // offset in text node where IME comp string begins
PRUint32 mIMEBufferLength; // current length of IME comp string
PRBool mIsIMEComposing; // is IME in composition state?
// This is different from mInIMEMode. see Bug 98434.
// various listeners
nsVoidArray* mActionListeners; // listens to all low level actions on the doc
nsVoidArray* mEditorObservers; // just notify once per high level change
nsCOMPtr<nsISupportsArray> mDocStateListeners;// listen to overall doc state (dirty or not, just created, etc)
PRInt8 mDocDirtyState; // -1 = not initialized
nsWeakPtr mDocWeak; // weak reference to the nsIDOMDocument
nsCOMPtr<nsIDTD> mDTD;
nsString* mPhonetic;
static PRInt32 gInstanceCount;
friend PRBool NSCanUnload(nsISupports* serviceMgr);
friend class nsAutoTxnsConserveSelection;
friend class nsAutoSelectionReset;
friend class nsAutoRules;
friend class nsRangeUpdater;
};
#endif
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