//
// Text.h
//
// $Id: //poco/Main/XML/include/DOM/Text.h#5 $
//
// Definition of the DOM Text class.
//
// Copyright (c) 2004, Guenter Obiltschnig/Applied Informatics.
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
// 
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
// 
// 3. Redistributions in any form must be accompanied by information on
//    how to obtain complete source code for this software and any
//    accompanying software that uses this software.  The source code
//    must either be included in the distribution or be available for no
//    more than the cost of distribution plus a nominal fee, and must be
//    freely redistributable under reasonable conditions.  For an
//    executable file, complete source code means the source code for all
//    modules it contains.  It does not include source code for modules or
//    files that typically accompany the major components of the operating
//    system on which the executable file runs.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// POSSIBILITY OF SUCH DAMAGE.
//


#ifndef DOM_Text_INCLUDED
#define DOM_Text_INCLUDED


#ifndef XML_XML_INCLUDED
#include "XML/XML.h"
#endif
#ifndef DOM_CharacterData_INCLUDED
#include "DOM/CharacterData.h"
#endif
#ifndef XML_XMLString_INCLUDED
#include "XML/XMLString.h"
#endif


XML_BEGIN


class XML_API Text: public CharacterData
	/// The Text interface inherits from CharacterData and represents the textual
	/// content (termed character data in XML) of an Element or Attr. If there is
	/// no markup inside an element's content, the text is contained in a single
	/// object implementing the Text interface that is the only child of the element.
	/// If there is markup, it is parsed into the information items (elements, comments,
	/// etc.) and Text nodes that form the list of children of the element.
	/// 
	/// When a document is first made available via the DOM, there is only one Text
	/// node for each block of text. Users may create adjacent Text nodes that represent
	/// the contents of a given element without any intervening markup, but should
	/// be aware that there is no way to represent the separations between these
	/// nodes in XML or HTML, so they will not (in general) persist between DOM
	/// editing sessions. The normalize() method on Element merges any such adjacent
	/// Text objects into a single node for each block of text.
{
public:
	Text* splitText(unsigned long offset);
		/// Breaks this node into two nodes at the specified offset, keeping both in
		/// the tree as siblings. This node then only contains all the content up to
		/// the offset point. A new node of the same type, which is inserted as the
		/// next sibling of this node, contains all the content at and after the offset
		/// point. When the offset is equal to the length of this node, the new node
		/// has no data.

	// Node
	const XMLString& nodeName() const;
	unsigned short nodeType() const;

protected:
	Text(Document* pOwnerDocument, const XMLString& data);
	Text(Document* pOwnerDocument, const Text& text);
	~Text();

	Node* copyNode(bool deep, Document* pOwnerDocument) const;

private:
	static const XMLString NODE_NAME;
	
	friend class Document;
};


XML_END


#endif // DOM_Text_INCLUDED