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gecko-dev/editor/base/nsHTMLEditor.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape 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/NPL/
*
* 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 Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#ifndef nsHTMLEditor_h__
#define nsHTMLEditor_h__
#include "nsCOMPtr.h"
#include "nsIHTMLEditor.h"
#include "nsITableEditor.h"
#include "nsIEditorMailSupport.h"
#include "nsIEditorStyleSheets.h"
#include "nsEditor.h"
#include "nsIDOMElement.h"
#include "nsIDOMEventListener.h"
#include "nsICSSLoader.h"
#include "nsICSSLoaderObserver.h"
#include "nsITableLayout.h"
#include "TypeInState.h"
#include "nsEditRules.h"
class nsIDOMKeyEvent;
/**
* The HTML editor implementation.<br>
* Use to edit HTML document represented as a DOM tree.
*/
class nsHTMLEditor : public nsEditor,
public nsIHTMLEditor,
public nsIEditorMailSupport,
public nsITableEditor,
public nsIEditorStyleSheets,
public nsICSSLoaderObserver
{
typedef enum {eNoOp, eReplaceParent=1, eInsertParent=2} BlockTransformationType;
public:
// see nsIHTMLEditor for documentation
//Interfaces for addref and release and queryinterface
//NOTE macro used is for classes that inherit from
// another class. Only the base class should use NS_DECL_ISUPPORTS
NS_DECL_ISUPPORTS_INHERITED
nsHTMLEditor();
virtual ~nsHTMLEditor();
/* ------------ nsIHTMLEditor methods -------------- */
NS_IMETHOD EditorKeyPress(nsIDOMKeyEvent* aKeyEvent);
NS_IMETHOD TypedText(const nsString& aString, PRInt32 aAction);
NS_IMETHOD GetDocumentIsEmpty(PRBool *aDocumentIsEmpty);
NS_IMETHOD GetDocumentLength(PRInt32 *aCount);
NS_IMETHOD SetMaxTextLength(PRInt32 aMaxTextLength);
NS_IMETHOD GetMaxTextLength(PRInt32& aMaxTextLength);
NS_IMETHOD SetInlineProperty(nsIAtom *aProperty,
const nsString *aAttribute,
const nsString *aValue);
NS_IMETHOD GetInlineProperty(nsIAtom *aProperty,
const nsString *aAttribute,
const nsString *aValue,
PRBool &aFirst, PRBool &aAny, PRBool &aAll);
NS_IMETHOD RemoveInlineProperty(nsIAtom *aProperty, const nsString *aAttribute);
NS_IMETHOD IncreaseFontSize();
NS_IMETHOD DecreaseFontSize();
NS_IMETHOD GetTypingState(nsIAtom *aProperty, PRBool &aSet);
NS_IMETHOD GetTypingStateValue(nsIAtom *aProperty, nsString &aValue);
NS_IMETHOD InsertBreak();
NS_IMETHOD InsertText(const nsString& aStringToInsert);
NS_IMETHOD InsertHTML(const nsString &aInputString);
NS_IMETHOD InsertElementAtSelection(nsIDOMElement* aElement, PRBool aDeleteSelection);
NS_IMETHOD DeleteSelection(ESelectionCollapseDirection aAction);
NS_IMETHOD DeleteSelectionAndCreateNode(const nsString& aTag, nsIDOMNode ** aNewNode);
NS_IMETHOD SelectElement(nsIDOMElement* aElement);
NS_IMETHOD SetCaretAfterElement(nsIDOMElement* aElement);
NS_IMETHOD SetParagraphFormat(const nsString& aParagraphFormat);
NS_IMETHOD GetParentBlockTags(nsStringArray *aTagList, PRBool aGetLists);
NS_IMETHOD GetParagraphTags(nsStringArray *aTagList);
NS_IMETHOD GetListTags(nsStringArray *aTagList);
NS_IMETHOD RemoveParagraphStyle();
NS_IMETHOD AddBlockParent(nsString& aParentTag);
NS_IMETHOD ReplaceBlockParent(nsString& aParentTag);
NS_IMETHOD RemoveParent(const nsString &aParentTag);
NS_IMETHOD MakeOrChangeList(const nsString& aListType);
NS_IMETHOD RemoveList(const nsString& aListType);
NS_IMETHOD InsertBasicBlock(const nsString& aBlockType);
NS_IMETHOD Indent(const nsString& aIndent);
NS_IMETHOD Align(const nsString& aAlign);
NS_IMETHOD GetElementOrParentByTagName(const nsString& aTagName, nsIDOMNode *aNode, nsIDOMElement** aReturn);
NS_IMETHOD GetSelectedElement(const nsString& aTagName, nsIDOMElement** aReturn);
NS_IMETHOD CreateElementWithDefaults(const nsString& aTagName, nsIDOMElement** aReturn);
NS_IMETHOD InsertLinkAroundSelection(nsIDOMElement* aAnchorElement);
/* ------------ nsIEditorIMESupport overrides -------------- */
NS_IMETHOD SetCompositionString(const nsString& aCompositionString, nsIPrivateTextRangeList* aTextRangeList,nsTextEventReply* aReply);
/* ------------ nsIEditorStyleSheets methods -------------- */
NS_IMETHOD ApplyStyleSheet(const nsString& aURL);
NS_IMETHOD ApplyOverrideStyleSheet(const nsString& aURL);
/* Above 2 methods call this with appropriate aOverride value
* Not exposed to IDL interface
*/
nsresult ApplyDocumentOrOverrideStyleSheet(const nsString& aURL, PRBool aOverride);
NS_IMETHOD AddStyleSheet(nsICSSStyleSheet* aSheet);
NS_IMETHOD RemoveStyleSheet(nsICSSStyleSheet* aSheet);
/* ------------ nsIEditorMailSupport methods -------------- */
NS_IMETHOD GetBodyWrapWidth(PRInt32 *aWrapColumn);
NS_IMETHOD SetBodyWrapWidth(PRInt32 aWrapColumn);
NS_IMETHOD PasteAsQuotation();
NS_IMETHOD InsertAsQuotation(const nsString& aQuotedText, nsIDOMNode **aNodeInserted);
NS_IMETHOD PasteAsCitedQuotation(const nsString& aCitation);
NS_IMETHOD InsertAsCitedQuotation(const nsString& aQuotedText, const nsString& aCitation, nsIDOMNode **aNodeInserted);
NS_IMETHOD GetEmbeddedObjects(nsISupportsArray** aNodeList);
/* ------------ nsITableEditor methods -------------- */
NS_IMETHOD InsertTableCell(PRInt32 aNumber, PRBool aAfter);
NS_IMETHOD InsertTableColumn(PRInt32 aNumber, PRBool aAfter);
NS_IMETHOD InsertTableRow(PRInt32 aNumber, PRBool aAfter);
NS_IMETHOD DeleteTable();
NS_IMETHOD DeleteTableCell(PRInt32 aNumber);
NS_IMETHOD DeleteTableColumn(PRInt32 aNumber);
NS_IMETHOD DeleteTableRow(PRInt32 aNumber);
NS_IMETHOD JoinTableCells();
NS_IMETHOD NormalizeTable(nsIDOMElement *aTable);
NS_IMETHOD GetCellIndexes(nsIDOMElement *aCell, PRInt32& aRowIndex, PRInt32& aColIndex);
NS_IMETHOD GetTableSize(nsIDOMElement *aTable, PRInt32& aRowCount, PRInt32& aColCount);
NS_IMETHOD GetCellAt(nsIDOMElement* aTable, PRInt32 aRowIndex, PRInt32 aColIndex, nsIDOMElement* &aCell);
NS_IMETHOD GetCellDataAt(nsIDOMElement* aTable, PRInt32 aRowIndex, PRInt32 aColIndex, nsIDOMElement* &aCell,
PRInt32& aStartRowIndex, PRInt32& aStartColIndex,
PRInt32& aRowSpan, PRInt32& aColSpan, PRBool& aIsSelected);
// Selection and navigation
/* obsolete
NS_IMETHOD MoveSelectionUp(nsIAtom *aIncrement, PRBool aExtendSelection);
NS_IMETHOD MoveSelectionDown(nsIAtom *aIncrement, PRBool aExtendSelection);
NS_IMETHOD MoveSelectionNext(nsIAtom *aIncrement, PRBool aExtendSelection);
NS_IMETHOD MoveSelectionPrevious(nsIAtom *aIncrement, PRBool aExtendSelection);
NS_IMETHOD SelectNext(nsIAtom *aIncrement, PRBool aExtendSelection);
NS_IMETHOD SelectPrevious(nsIAtom *aIncrement, PRBool aExtendSelection);
NS_IMETHOD ScrollUp(nsIAtom *aIncrement);
NS_IMETHOD ScrollDown(nsIAtom *aIncrement);
NS_IMETHOD ScrollIntoView(PRBool aScrollToBegin);
*/
/* miscellaneous */
// This sets background on the appropriate container element (table, cell,)
// or calls into nsTextEditor to set the page background
NS_IMETHOD SetBackgroundColor(const nsString& aColor);
NS_IMETHOD SetBodyAttribute(const nsString& aAttr, const nsString& aValue);
/* ------------ Overrides of nsEditor interface methods -------------- */
/** prepare the editor for use */
NS_IMETHOD Init(nsIDOMDocument *aDoc, nsIPresShell *aPresShell, PRUint32 aFlags);
NS_IMETHOD SetDocumentCharacterSet(const PRUnichar* characterSet);
/** we override this here to install event listeners */
NS_IMETHOD PostCreate();
NS_IMETHOD GetFlags(PRUint32 *aFlags);
NS_IMETHOD SetFlags(PRUint32 aFlags);
/** Inherited from nsEditor with special cases for some html nodes **/
NS_IMETHOD InsertFormattingForNode(nsIDOMNode* aNode);
NS_IMETHOD Undo(PRUint32 aCount);
NS_IMETHOD Redo(PRUint32 aCount);
NS_IMETHOD Cut();
NS_IMETHOD Copy();
NS_IMETHOD Paste();
NS_IMETHOD OutputToString(nsString& aOutputString,
const nsString& aFormatType,
PRUint32 aFlags);
NS_IMETHOD OutputToStream(nsIOutputStream* aOutputStream,
const nsString& aFormatType,
const nsString* aCharsetOverride,
PRUint32 aFlags);
NS_IMETHOD DebugUnitTests(PRInt32 *outNumTests, PRInt32 *outNumTestsFailed);
/* ------------ nsICSSLoaderObserver -------------- */
NS_IMETHOD StyleSheetLoaded(nsICSSStyleSheet*aSheet, PRBool aNotify);
/* ------------ Utility Routines, not part of public API -------------- */
NS_IMETHOD GetBodyStyleContext(nsIStyleContext** aStyleContext);
protected:
virtual void InitRules();
/** install the event listeners for the editor
* used to be part of Init, but now broken out into a separate method
* called by PostCreate, giving the caller the chance to interpose
* their own listeners before we install our own backstops.
*/
NS_IMETHOD InstallEventListeners();
/** returns the layout object (nsIFrame in the real world) for aNode
* @param aNode the content to get a frame for
* @param aLayoutObject the "primary frame" for aNode, if one exists. May be null
* @return NS_OK whether a frame is found or not
* an error if some serious error occurs
*/
NS_IMETHOD GetLayoutObject(nsIDOMNode *aInNode, nsISupports **aOutLayoutObject);
NS_IMETHOD CollapseAdjacentTextNodes(nsIDOMSelection *aInSelection);
NS_IMETHOD DeleteSelectionAndPrepareToCreateNode(nsCOMPtr<nsIDOMNode> &parentSelectedNode, PRInt32& offsetOfNewNode);
/* StyleSheet load callback */
static void ApplyStyleSheetToPresShellDocument(nsICSSStyleSheet* aSheet, void *aData);
/* remove the old style sheet, and apply the supplied one */
NS_IMETHOD ReplaceStyleSheet(nsICSSStyleSheet *aNewSheet);
// Return TRUE if aElement is a table-related elemet and caret was set
PRBool SetCaretInTableCell(nsIDOMElement* aElement);
PRBool IsElementInBody(nsIDOMElement* aElement);
// key event helpers
NS_IMETHOD TabInTable(PRBool inIsShift, PRBool *outHandled);
NS_IMETHOD CreateBR(nsIDOMNode *aNode, PRInt32 aOffset, nsCOMPtr<nsIDOMNode> *outBRNode);
NS_IMETHOD InsertBR(nsCOMPtr<nsIDOMNode> *outBRNode);
// Table Editing (implemented in EditTable.cpp)
// Table utilities
NS_IMETHOD DeleteTable(nsCOMPtr<nsIDOMElement> &table, nsCOMPtr<nsIDOMSelection> &selection);
// Helper used to get nsITableLayout interface for methods implemented in nsTableFrame
NS_IMETHOD GetTableLayoutObject(nsIDOMElement* aTable, nsITableLayout **tableLayoutObject);
// Helpers to do appropriate deleting when last cell or row is about to be deleted
PRBool IsOnlyCellInRow(nsCOMPtr<nsIDOMElement> &aCell, nsIDOMElement** aParentRow);
PRBool IsOnlyRowInTable(nsCOMPtr<nsIDOMElement> &aRow, nsCOMPtr<nsIDOMElement> &aTable);
// Most insert methods need to get the same basic context data
NS_IMETHOD GetCellContext(nsCOMPtr<nsIDOMSelection> &aSelection,
nsCOMPtr<nsIDOMElement> &aTable, nsCOMPtr<nsIDOMElement> &aCell,
nsCOMPtr<nsIDOMNode> &aCellParent, PRInt32& aCellOffset,
PRInt32& aRow, PRInt32& aCol);
// Use the selection iterator to find the first cell in the selection
NS_IMETHOD GetFirstSelectedCell(nsCOMPtr<nsIDOMElement> &aCell);
// Setting caret to a logical place can get tricky,
// especially after deleting table stuff
typedef enum { eNoSearch, ePreviousColumn, ePreviousRow } SetCaretSearchDirection;
NS_IMETHOD SetCaretAfterTableEdit(nsIDOMElement* aTable, PRInt32 aCol, PRInt32 aRow, SetCaretSearchDirection aDirection);
NS_IMETHOD ReParentContentOfNode(nsIDOMNode *aNode,
nsString &aParentTag,
BlockTransformationType aTranformation);
NS_IMETHOD ReParentBlockContent(nsIDOMNode *aNode,
nsString &aParentTag,
nsIDOMNode *aBlockParentNode,
nsString &aBlockParentTag,
BlockTransformationType aTranformation,
nsIDOMNode **aNewParentNode);
NS_IMETHOD ReParentContentOfRange(nsIDOMRange *aRange,
nsString &aParentTag,
BlockTransformationType aTranformation);
NS_IMETHOD RemoveParagraphStyleFromRange(nsIDOMRange *aRange);
NS_IMETHOD RemoveParagraphStyleFromBlockContent(nsIDOMRange *aRange);
NS_IMETHOD RemoveParentFromRange(const nsString &aParentTag, nsIDOMRange *aRange);
NS_IMETHOD RemoveParentFromBlockContent(const nsString &aParentTag, nsIDOMRange *aRange);
NS_IMETHOD IsRootTag(nsString &aTag, PRBool &aIsTag);
NS_IMETHOD IsLeafThatTakesInlineStyle(const nsString *aTag, PRBool &aResult);
NS_IMETHOD IsSubordinateBlock(nsString &aTag, PRBool &aIsTag);
static PRBool IsTable(nsIDOMNode *aNode);
static PRBool IsTableCell(nsIDOMNode *aNode);
static PRBool IsTableElement(nsIDOMNode *aNode);
static nsCOMPtr<nsIDOMNode> GetEnclosingTable(nsIDOMNode *aNode);
/** content-based query returns PR_TRUE if <aProperty aAttribute=aValue> effects aNode
* If <aProperty aAttribute=aValue> contains aNode,
* but <aProperty aAttribute=SomeOtherValue> also contains aNode and the second is
* more deeply nested than the first, then the first does not effect aNode.
*
* @param aNode The target of the query
* @param aProperty The property that we are querying for
* @param aAttribute The attribute of aProperty, example: color in <FONT color="blue">
* May be null.
* @param aValue The value of aAttribute, example: blue in <FONT color="blue">
* May be null. Ignored if aAttribute is null.
* @param aIsSet [OUT] PR_TRUE if <aProperty aAttribute=aValue> effects aNode.
* @param aStyleNode [OUT] set to the node representing <aProperty aAttribute=aValue>, if found.
* null if aIsSet is returned as PR_FALSE;
*/
virtual void IsTextPropertySetByContent(nsIDOMNode *aNode,
nsIAtom *aProperty,
const nsString *aAttribute,
const nsString *aValue,
PRBool &aIsSet,
nsIDOMNode **aStyleNode) const;
/** style-based query returns PR_TRUE if (aProperty, aAttribute) is set in aSC.
* WARNING: not well tested yet since we don't do style-based queries anywhere.
*/
virtual void IsTextStyleSet(nsIStyleContext *aSC,
nsIAtom *aProperty,
const nsString *aAttributes,
PRBool &aIsSet) const;
/** Moves the content between (aNode, aStartOffset) and (aNode, aEndOffset)
* into aNewParentNode, splitting aNode as necessary to maintain the relative
* position of all leaf content.
* @param aNode The node whose content we're repositioning.
* aNode can be either a text node or a container node.
* @param aNewParentNode The node that will be the repositioned contents' parent.
* The caller is responsible for allocating aNewParentNode
* @param aStartOffset The start offset of the content of aNode
* @param aEndOffset The end offset of the content of aNode.
*/
NS_IMETHOD MoveContentOfNodeIntoNewParent(nsIDOMNode *aNode,
nsIDOMNode *aNewParentNode,
PRInt32 aStartOffset,
PRInt32 aEndOffset);
/** Moves the content between (aStartNode, aStartOffset) and (aEndNode, aEndOffset)
* into aNewParentNode, splitting aStartNode and aEndNode as necessary to maintain
* the relative position of all leaf content.
* The content between the two endpoints MUST be "contiguous" in the sense that
* it is all in the same block. Another way of saying this is all content nodes
* between aStartNode and aEndNode must be inline.
* @see IntermediateNodesAreInline
*
* @param aStartNode The left node, can be either a text node or a container node.
* @param aStartOffset The start offset in the content of aStartNode
* @param aEndNode The right node, can be either a text node or a container node.
* @param aEndOffset The end offset in the content of aEndNode.
* @param aGrandParentNode The common ancestor of aStartNode and aEndNode.
* aGrandParentNode will be the parent of aNewParentNode.
* @param aNewParentNode The node that will be the repositioned contents' parent.
* The caller is responsible for allocating aNewParentNode
*/
NS_IMETHOD MoveContiguousContentIntoNewParent(nsIDOMNode *aStartNode,
PRInt32 aStartOffset,
nsIDOMNode *aEndNode,
PRInt32 aEndOffset,
nsIDOMNode *aGrandParentNode,
nsIDOMNode *aNewParentNode);
NS_IMETHOD SetTextPropertiesForNode(nsIDOMNode *aNode,
nsIDOMNode *aParent,
PRInt32 aStartOffset,
PRInt32 aEndOffset,
nsIAtom *aPropName,
const nsString *aAttribute,
const nsString *aValue);
NS_IMETHOD SetTextPropertiesForNodesWithSameParent(nsIDOMNode *aStartNode,
PRInt32 aStartOffset,
nsIDOMNode *aEndNode,
PRInt32 aEndOffset,
nsIDOMNode *aParent,
nsIAtom *aPropName,
const nsString *aAttribute,
const nsString *aValue);
NS_IMETHOD SetTextPropertiesForNodeWithDifferentParents(nsIDOMRange *aRange,
nsIDOMNode *aStartNode,
PRInt32 aStartOffset,
nsIDOMNode *aEndNode,
PRInt32 aEndOffset,
nsIDOMNode *aParent,
nsIAtom *aPropName,
const nsString *aAttribute,
const nsString *aValue);
NS_IMETHOD RemoveTextPropertiesForNode(nsIDOMNode *aNode,
nsIDOMNode *aParent,
PRInt32 aStartOffset,
PRInt32 aEndOffset,
nsIAtom *aPropName,
const nsString *aAttribute);
NS_IMETHOD RemoveTextPropertiesForNodesWithSameParent(nsIDOMNode *aStartNode,
PRInt32 aStartOffset,
nsIDOMNode *aEndNode,
PRInt32 aEndOffset,
nsIDOMNode *aParent,
nsIAtom *aPropName,
const nsString *aAttribute);
NS_IMETHOD RemoveTextPropertiesForNodeWithDifferentParents(nsIDOMNode *aStartNode,
PRInt32 aStartOffset,
nsIDOMNode *aEndNode,
PRInt32 aEndOffset,
nsIDOMNode *aParent,
nsIAtom *aPropName,
const nsString *aAttribute);
NS_IMETHOD SetTypeInStateForProperty(TypeInState &aTypeInState,
nsIAtom *aPropName,
const nsString *aAttribute,
const nsString *aValue);
NS_IMETHOD GetTextSelectionOffsetsForRange(nsIDOMSelection *aSelection,
nsIDOMNode **aParent,
PRInt32 &aStartOffset,
PRInt32 &aEndOffset);
void ResetTextSelectionForRange(nsIDOMNode *aParent,
PRInt32 aStartOffset,
PRInt32 aEndOffset,
nsIDOMSelection *aSelection);
/** returns the absolute position of the end points of aSelection
* in the document as a text stream.
*/
nsresult GetTextSelectionOffsets(nsIDOMSelection *aSelection,
PRInt32 &aStartOffset,
PRInt32 &aEndOffset);
nsresult GetAbsoluteOffsetsForPoints(nsIDOMNode *aInStartNode,
PRInt32 aInStartOffset,
nsIDOMNode *aInEndNode,
PRInt32 aInEndOffset,
nsIDOMNode *aInCommonParentNode,
PRInt32 &aOutStartOffset,
PRInt32 &aEndOffset);
// Methods for handling plaintext quotations
NS_IMETHOD PasteAsPlaintextQuotation();
NS_IMETHOD InsertAsPlaintextQuotation(const nsString& aQuotedText,
nsIDOMNode **aNodeInserted);
TypeInState *GetTypeInState();
/** simple utility to handle any error with event listener allocation or registration */
void HandleEventListenerError();
// Data members
protected:
TypeInState* mTypeInState;
nsEditRules* mRules;
nsCOMPtr<nsIDOMEventListener> mKeyListenerP;
nsCOMPtr<nsIDOMEventListener> mMouseListenerP;
nsCOMPtr<nsIDOMEventListener> mTextListenerP;
nsCOMPtr<nsIDOMEventListener> mCompositionListenerP;
nsCOMPtr<nsIDOMEventListener> mDragListenerP;
nsCOMPtr<nsIDOMEventListener> mFocusListenerP;
PRBool mIsComposing;
PRInt32 mMaxTextLength;
public:
static nsIAtom *gTypingTxnName;
static nsIAtom *gIMETxnName;
static nsIAtom *gDeleteTxnName;
// friends
friend class nsHTMLEditRules;
friend class nsTextEditRules;
};
#endif //nsHTMLEditor_h__
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