DOM_Text.hpp
上传用户:huihehuasu
上传日期:2007-01-10
资源大小:6948k
文件大小:8k
- /*
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 1999-2000 The Apache Software Foundation. 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. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Xerces" and "Apache Software Foundation" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * nor may "Apache" appear in their name, without prior written
- * permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation, and was
- * originally based on software copyright (c) 1999, International
- * Business Machines, Inc., http://www.ibm.com . For more information
- * on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
- /*
- * $Log: DOM_Text.hpp,v $
- * Revision 1.8 2000/07/28 01:33:31 aruna1
- * DOM Level 2 Range feature introduced
- *
- * Revision 1.7 2000/03/24 01:30:50 chchou
- * Fix bug #8 to support ignorable whitespace text nodes
- *
- * Revision 1.6 2000/03/02 19:53:57 roddey
- * This checkin includes many changes done while waiting for the
- * 1.1.0 code to be finished. I can't list them all here, but a list is
- * available elsewhere.
- *
- * Revision 1.5 2000/02/24 20:11:28 abagchi
- * Swat for removing Log from API docs
- *
- * Revision 1.4 2000/02/06 07:47:31 rahulj
- * Year 2K copyright swat.
- *
- * Revision 1.3 2000/02/04 01:49:27 aruna1
- * TreeWalker and NodeIterator changes
- *
- * Revision 1.2 2000/01/05 01:16:08 andyh
- * DOM Level 2 core, namespace support added.
- *
- * Revision 1.1.1.1 1999/11/09 01:09:04 twl
- * Initial checkin
- *
- * Revision 1.2 1999/11/08 20:44:22 rahul
- * Swat for adding in Product name and CVS comment log variable.
- *
- */
- #ifndef DOM_Text_HEADER_GUARD_
- #define DOM_Text_HEADER_GUARD_
- #include <util/XercesDefs.hpp>
- #include <dom/DOM_CharacterData.hpp>
- class TextImpl;
- /**
- * The <code>Text</code> interface represents the textual content (termed
- * character data in XML) of an <code>Element</code> or <code>Attr</code>.
- * If there is no markup inside an element's content, the text is contained
- * in a single object implementing the <code>Text</code> interface that is
- * the only child of the element. If there is markup, it is parsed into a
- * list of elements and <code>Text</code> nodes that form the list of
- * children of the element.
- * <p>When a document is first made available via the DOM, there is only one
- * <code>Text</code> node for each block of text. Users may create adjacent
- * <code>Text</code> 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, so they
- * will not (in general) persist between DOM editing sessions. The
- * <code>normalize()</code> method on <code>Element</code> merges any such
- * adjacent <code>Text</code> objects into a single node for each block of
- * text; this is recommended before employing operations that depend on a
- * particular document structure, such as navigation with
- * <code>XPointers.</code>
- */
- class CDOM_EXPORT DOM_Text: public DOM_CharacterData {
- public:
- /** @name Constructors and assignment operator */
- //@{
- /**
- * Default constructor for DOM_Text. The resulting object does not
- * refer to an actual Text node; it will compare == to 0, and is similar
- * to a null object reference variable in Java. It may subsequently be
- * assigned to refer to an actual comment node.
- *
- */
- DOM_Text();
- /**
- * Copy constructor. Creates a new <code>DOM_Text</code> that refers to the
- * same underlying node as the original. See also DOM_Node::clone(),
- * which will copy the actual Text node, rather than just creating a new
- * reference to the original node.
- *
- * @param other The object to be copied.
- */
- DOM_Text(const DOM_Text &other);
- /**
- * Assignment operator.
- *
- * @param other The object to be copied.
- */
- DOM_Text & operator = (const DOM_Text &other);
- /**
- * Assignment operator. This overloaded variant is provided for
- * the sole purpose of setting a DOM_Node reference variable to
- * zero. Nulling out a reference variable in this way will decrement
- * the reference count on the underlying Node object that the variable
- * formerly referenced. This effect is normally obtained when reference
- * variable goes out of scope, but zeroing them can be useful for
- * global instances, or for local instances that will remain in scope
- * for an extended time, when the storage belonging to the underlying
- * node needs to be reclaimed.
- *
- * @param val. Only a value of 0, or null, is allowed.
- */
- DOM_Text & operator = (const DOM_NullPtr *val);
- //@}
- /** @name Destructor. */
- //@{
- /**
- * Destructor for DOM_Text. The object being destroyed is the reference
- * object, not the underlying Comment node itself.
- *
- */
- ~DOM_Text();
- //@}
- /** @name Functions to modify the Text node. */
- //@{
- /**
- * 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 <code>offset</code> point. And a new
- * node of the same nodeType, which is inserted as the next sibling of this
- * node, contains all the content at and after the <code>offset</code>
- * point. When the <code>offset</code> is equal to the lenght of this node,
- * the new node has no data.
- * @param offset The offset at which to split, starting from 0.
- * @return The new <code>Text</code> node.
- * @exception DOMException
- * INDEX_SIZE_ERR: Raised if the specified offset is negative or greater
- * than the number of characters in <code>data</code>.
- * <br>NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
- */
- DOM_Text splitText(unsigned int offset);
- //@}
- /** @name Non-standard (not defined by the DOM specification) functions. */
- //@{
- /**
- *
- * <p><b>"Experimental - subject to change"</b></p>
- *
- * Return true if this node contains ignorable whitespaces only.
- * @return True if this node contains ignorable whitespaces only.
- */
- bool isIgnorableWhitespace();
- //@}
- protected:
- DOM_Text(TextImpl *);
- friend class DOM_Document;
- friend class RangeImpl;
- };
- #endif