/* -*- 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 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef nsTextEditRules_h__
#define nsTextEditRules_h__
#include "nsCOMPtr.h"
#include "nsHTMLEditor.h"
#include "nsIDOMNode.h"
#include "nsEditRules.h"
#include "TypeInState.h"
class PlaceholderTxn;
class nsTextEditor;
/** Object that encapsulates HTML text-specific editing rules.
*
* To be a good citizen, edit rules must live by these restrictions:
* 1. All data manipulation is through the editor.
* Content nodes in the document tree must not be manipulated directly.
* Content nodes in document fragments that are not part of the document itself
* may be manipulated at will. Operations on document fragments must not
* go through the editor.
* 2. Selection must not be explicitly set by the rule method.
* Any manipulation of Selection must be done by the editor.
*/
class nsTextEditRules : public nsEditRules
{
public:
nsTextEditRules(PRUint32 aFlags);
virtual ~nsTextEditRules();
// nsEditRules methods
NS_IMETHOD Init(nsHTMLEditor *aEditor);
NS_IMETHOD WillDoAction(nsIDOMSelection *aSelection, nsRulesInfo *aInfo, PRBool *aCancel);
NS_IMETHOD DidDoAction(nsIDOMSelection *aSelection, nsRulesInfo *aInfo, nsresult aResult);
NS_IMETHOD GetFlags(PRUint32 *aFlags);
NS_IMETHOD SetFlags(PRUint32 aFlags);
// nsTextEditRules action id's
enum
{
// any editor that has a txn mgr
kUndo = 1000,
kRedo = 1001,
// text actions
kInsertText = 2000,
kDeleteSelection = 2001,
kSetTextProperty = 2003,
kRemoveTextProperty = 2004,
kOutputText = 2005,
// html only action
kInsertBreak = 3000,
kMakeList = 3001,
kIndent = 3002,
kOutdent = 3003,
kAlign = 3004,
kMakeHeader = 3005,
kMakeAddress = 3006,
kMakePRE = 3007
};
protected:
// nsTextEditRules implementation methods
nsresult WillInsertText(nsIDOMSelection *aSelection,
PRBool *aCancel,
PlaceholderTxn **aTxn,
const nsString *inString,
nsString *outString,
TypeInState typeInState,
PRInt32 aMaxLength);
nsresult DidInsertText(nsIDOMSelection *aSelection, nsresult aResult);
nsresult CreateStyleForInsertText(nsIDOMSelection *aSelection, TypeInState &aTypeInState);
nsresult WillInsertBreak(nsIDOMSelection *aSelection, PRBool *aCancel);
nsresult DidInsertBreak(nsIDOMSelection *aSelection, nsresult aResult);
nsresult WillInsert(nsIDOMSelection *aSelection, PRBool *aCancel);
nsresult DidInsert(nsIDOMSelection *aSelection, nsresult aResult);
nsresult WillDeleteSelection(nsIDOMSelection *aSelection,
nsIEditor::ESelectionCollapseDirection aCollapsedAction,
PRBool *aCancel);
nsresult DidDeleteSelection(nsIDOMSelection *aSelection,
nsIEditor::ESelectionCollapseDirection aCollapsedAction,
nsresult aResult);
nsresult WillSetTextProperty(nsIDOMSelection *aSelection, PRBool *aCancel);
nsresult DidSetTextProperty(nsIDOMSelection *aSelection, nsresult aResult);
nsresult WillRemoveTextProperty(nsIDOMSelection *aSelection, PRBool *aCancel);
nsresult DidRemoveTextProperty(nsIDOMSelection *aSelection, nsresult aResult);
nsresult WillUndo(nsIDOMSelection *aSelection, PRBool *aCancel);
nsresult DidUndo(nsIDOMSelection *aSelection, nsresult aResult);
nsresult WillRedo(nsIDOMSelection *aSelection, PRBool *aCancel);
nsresult DidRedo(nsIDOMSelection *aSelection, nsresult aResult);
nsresult WillOutputText(nsIDOMSelection *aSelection, nsString *aOutText, PRBool *aCancel);
nsresult DidOutputText(nsIDOMSelection *aSelection, nsresult aResult);
// helper functions
/** insert aNode into a new style node of type aTag.
* aSelection is optional. If provided, aSelection is set to (aNode, 0)
* if aNode was successfully placed in a new style node
* @param aNewStyleNode [OUT] The newly created style node, if result is successful
* undefined if result is a failure.
*/
nsresult InsertStyleNode(nsIDOMNode *aNode,
nsIAtom *aTag,
nsIDOMSelection *aSelection,
nsIDOMNode **aNewStyleNode);
/** inserts a new node and sets the aAttr attribute to aValue */
nsresult CreateFontStyleForInsertText(nsIDOMNode *aNewTextNode,
const nsString &aAttr,
const nsString &aValue,
nsIDOMSelection *aSelection);
/** create a new style node of type aTag in aParentNode, and put a new text node
* in the new style node.
* If aSelection is provided and points to a text node, just call InsertStyleNode instead.
* aSelection is optional. If provided, aSelection is set to (newTextNode, 0)
* if newTextNode was successfully created.
*/
nsresult InsertStyleAndNewTextNode(nsIDOMNode *aParentNode,
nsIAtom *aTag,
nsIDOMSelection *aSelection);
/** creates a bogus text node if the document has no editable content */
nsresult CreateBogusNodeIfNeeded(nsIDOMSelection *aSelection);
/** enforce selection must be inside PRE node */
nsresult PinSelectionInPRE(nsIDOMSelection *aSelection);
// data
nsHTMLEditor *mEditor; // note that we do not refcount the editor
nsString mPasswordText; // a buffer we use to store the real value of password editors
nsCOMPtr mBogusNode; // magic node acts as placeholder in empty doc
PRUint32 mFlags;
};
class nsTextRulesInfo : public nsRulesInfo
{
public:
nsTextRulesInfo(int aAction) :
nsRulesInfo(aAction),
placeTxn(0),
inString(0),
outString(0),
typeInState(),
maxLength(-1),
collapsedAction(nsIEditor::eDeleteNext)
{};
virtual ~nsTextRulesInfo() {};
// kInsertText
PlaceholderTxn **placeTxn;
const nsString *inString;
nsString *outString;
TypeInState typeInState;
PRInt32 maxLength;
// kDeleteSelection
nsIEditor::ESelectionCollapseDirection collapsedAction;
// kMakeList
PRBool bOrdered;
// kAlign
const nsString *alignType;
};
#endif //nsTextEditRules_h__