pjs/content/base/public/nsITextContent.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/
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*
* 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.
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*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
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*/
#ifndef nsITextContent_h___
#define nsITextContent_h___
#include "nslayout.h"
class nsString;
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class nsTextFragment;
class nsIContent;
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// IID for the nsITextContent interface
#define NS_ITEXT_CONTENT_IID \
{0xa6cf9065, 0x15b3, 0x11d2, {0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32}}
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/**
* Interface for textual content. This interface is used to provide
* an efficient access to text content.
*/
class nsITextContent : public nsISupports {
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public:
static const nsIID& GetIID() { static nsIID iid = NS_ITEXT_CONTENT_IID; return iid; }
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/**
* Get direct access (but read only) to the text in the text content.
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*/
NS_IMETHOD GetText(const nsTextFragment** aFragmentsResult) = 0;
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/**
* Get the length of the text content.
*/
NS_IMETHOD GetTextLength(PRInt32* aLengthResult) = 0;
/**
* Make a copy of the text content in aResult.
*/
NS_IMETHOD CopyText(nsString& aResult) = 0;
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/**
* Set the text to the given value. If aNotify is PR_TRUE then
* the document is notified of the content change.
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*/
NS_IMETHOD SetText(const PRUnichar* aBuffer,
PRInt32 aLength,
PRBool aNotify) = 0;
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/**
* Set the text to the given value. If aNotify is PR_TRUE then
* the document is notified of the content change.
*/
NS_IMETHOD SetText(const char* aBuffer,
PRInt32 aLength,
PRBool aNotify) = 0;
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/**
* Query method to see if the frame is nothing but whitespace
*/
NS_IMETHOD IsOnlyWhitespace(PRBool* aResult) = 0;
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};
//----------------------------------------------------------------------
/* a6cf905e-15b3-11d2-932e-00805f8add32 */
#define NS_ITEXT_CONTENT_CHANGE_DATA_IID \
{0xa6cf905e, 0x15b3, 0x11d2, {0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32}}
// Simple interface for encapsulating change data for a ContentChanged
// notification.
class nsITextContentChangeData : public nsISupports {
public:
NS_DEFINE_STATIC_IID_ACCESSOR(NS_ITEXT_CONTENT_CHANGE_DATA_IID);
enum ChangeType {
Insert,
Append,
Replace
};
/**
* Get the type of change associated with the ContentChanged
* notification.
*/
NS_IMETHOD GetChangeType(ChangeType* aResult) = 0;
NS_IMETHOD GetInsertData(PRInt32* aOffset,
PRInt32* aInsertLength) = 0;
NS_IMETHOD GetAppendData(PRInt32* aOffset,
PRInt32* aAppendLength) = 0;
NS_IMETHOD GetReplaceData(PRInt32* aOffset,
PRInt32* aSourceLength,
PRInt32* aReplaceLength) = 0;
};
// XXX These belong elsewhere
extern nsresult
NS_NewTextNode(nsIContent** aResult);
extern nsresult
NS_NewCommentNode(nsIContent** aResult);
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#endif /* nsITextContent_h___ */