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Diffstat (limited to 'khtml/dom/dom_text.h')
| -rw-r--r-- | khtml/dom/dom_text.h | 312 |
1 files changed, 312 insertions, 0 deletions
diff --git a/khtml/dom/dom_text.h b/khtml/dom/dom_text.h new file mode 100644 index 000000000..c6f92fb1d --- /dev/null +++ b/khtml/dom/dom_text.h @@ -0,0 +1,312 @@ +/* + * This file is part of the DOM implementation for KDE. + * + * (C) 1999 Lars Knoll (knoll@kde.org) + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public License + * along with this library; see the file COPYING.LIB. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + * + * This file includes excerpts from the Document Object Model (DOM) + * Level 1 Specification (Recommendation) + * http://www.w3.org/TR/REC-DOM-Level-1/ + * Copyright © World Wide Web Consortium , (Massachusetts Institute of + * Technology , Institut National de Recherche en Informatique et en + * Automatique , Keio University ). All Rights Reserved. + * + */ +#ifndef _DOM_CharacterData_h_ +#define _DOM_CharacterData_h_ + +#include <dom/dom_node.h> + +namespace DOM { + +class DOMString; +class CharacterDataImpl; + +/** + * The \c CharacterData interface extends Node with a set + * of attributes and methods for accessing character data in the DOM. + * For clarity this set is defined here rather than on each object + * that uses these attributes and methods. No DOM objects correspond + * directly to \c CharacterData , though \c Text + * and others do inherit the interface from it. All + * <code>offset</code>s in this interface start from 0. + * + */ +class KHTML_EXPORT CharacterData : public Node +{ + friend class CharacterDataImpl; + +public: + CharacterData(); + CharacterData(const CharacterData &other); + CharacterData(const Node &other) : Node() + {(*this)=other;} + + CharacterData & operator = (const Node &other); + CharacterData & operator = (const CharacterData &other); + + ~CharacterData(); + + /** + * The character data of the node that implements this interface. + * The DOM implementation may not put arbitrary limits on the + * amount of data that may be stored in a \c CharacterData + * node. However, implementation limits may mean that the + * entirety of a node's data may not fit into a single + * \c DOMString . In such cases, the user may call + * \c substringData to retrieve the data in appropriately + * sized pieces. + * + * @exception DOMException + * DOMSTRING_SIZE_ERR: Raised when it would return more characters + * than fit in a \c DOMString variable on the + * implementation platform. + * + */ + DOMString data() const; + + /** + * see data + * @exception DOMException + * NO_MODIFICATION_ALLOWED_ERR: Raised when the node is readonly. + * + */ + void setData( const DOMString & ); + + /** + * The number of characters that are available through \c data + * and the \c substringData method below. This + * may have the value zero, i.e., \c CharacterData + * nodes may be empty. + * + */ + unsigned long length() const; + + /** + * Extracts a range of data from the node. + * + * @param offset Start offset of substring to extract. + * + * @param count The number of characters to extract. + * + * @return The specified substring. If the sum of \c offset + * and \c count exceeds the \c length + * , then all characters to the end of the data are + * returned. + * + * @exception DOMException + * INDEX_SIZE_ERR: Raised if the specified offset is negative or + * greater than the number of characters in \c data , + * or if the specified \c count is negative. + * + * DOMSTRING_SIZE_ERR: Raised if the specified range of text does + * not fit into a \c DOMString . + * + */ + DOMString substringData ( const unsigned long offset, const unsigned long count ); + + /** + * Append the string to the end of the character data of the node. + * Upon success, \c data provides access to the + * concatenation of \c data and the \c DOMString + * specified. + * + * @param arg The \c DOMString to append. + * + * @return + * + * @exception DOMException + * NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly. + * + */ + void appendData ( const DOMString &arg ); + + /** + * Insert a string at the specified character offset. + * + * @param offset The character offset at which to insert. + * + * @param arg The \c DOMString to insert. + * + * @return + * + * @exception DOMException + * INDEX_SIZE_ERR: Raised if the specified offset is negative or + * greater than the number of characters in \c data . + * + * NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly. + * + */ + void insertData ( const unsigned long offset, const DOMString &arg ); + + /** + * Remove a range of characters from the node. Upon success, + * \c data and \c length reflect the + * change. + * + * @param offset The offset from which to remove characters. + * + * @param count The number of characters to delete. If the sum of + * \c offset and \c count exceeds + * \c length then all characters from \c offset + * to the end of the data are deleted. + * + * @return + * + * @exception DOMException + * INDEX_SIZE_ERR: Raised if the specified offset is negative or + * greater than the number of characters in \c data , + * or if the specified \c count is negative. + * + * NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly. + * + */ + void deleteData ( const unsigned long offset, const unsigned long count ); + + /** + * Replace the characters starting at the specified character + * offset with the specified string. + * + * @param offset The offset from which to start replacing. + * + * @param count The number of characters to replace. If the sum of + * \c offset and \c count exceeds + * \c length , then all characters to the end of the data are + * replaced (i.e., the effect is the same as a \c remove + * method call with the same range, followed by an + * \c append method invocation). + * + * @param arg The \c DOMString with which the range + * must be replaced. + * + * @return + * + * @exception DOMException + * INDEX_SIZE_ERR: Raised if the specified offset is negative or + * greater than the number of characters in \c data , + * or if the specified \c count is negative. + * + * NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly. + * + */ + void replaceData ( const unsigned long offset, const unsigned long count, const DOMString &arg ); + +protected: + CharacterData(CharacterDataImpl *i); +}; + + +class CommentImpl; + +/** + * This represents the content of a comment, i.e., all the characters + * between the starting ' \c <!-- ' and ending ' + * \c --> '. Note that this is the definition of a comment in + * XML, and, in practice, HTML, although some HTML tools may implement + * the full SGML comment structure. + * + */ +class KHTML_EXPORT Comment : public CharacterData +{ + friend class Document; + friend class TextImpl; + +public: + Comment(); + Comment(const Comment &other); + Comment(const Node &other) : CharacterData() + {(*this)=other;} + + Comment & operator = (const Node &other); + Comment & operator = (const Comment &other); + + ~Comment(); + +protected: + Comment(CommentImpl *i); +}; + +class TextImpl; + +/** + * The \c Text interface represents the textual content + * (termed <a href="&xml-spec;#syntax"> character data </a> in XML) of + * an \c Element or \c Attr . If there is no + * markup inside an element's content, the text is contained in a + * single object implementing the \c Text interface that + * is the only child of the element. If there is markup, it is parsed + * into a list of elements and \c 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 \c Text node for each block of text. Users may + * create adjacent \c 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 \c normalize() + * method on \c Element merges any such adjacent + * \c Text 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 + * \c XPointers. + * + */ +class KHTML_EXPORT Text : public CharacterData +{ + friend class Document; + friend class TextImpl; + +public: + Text(); + Text(const Text &other); + Text(const Node &other) : CharacterData() + {(*this)=other;} + + Text & operator = (const Node &other); + Text & operator = (const Text &other); + + ~Text(); + + /** + * Breaks this \c Text node into two Text nodes at the + * specified offset, keeping both in the tree as siblings. This + * node then only contains all the content up to the \c offset + * point. And a new \c Text node, which is + * inserted as the next sibling of this node, contains all the + * content at and after the \c offset point. + * + * @param offset The offset at which to split, starting from 0. + * + * @return The new \c Text node. + * + * @exception DOMException + * INDEX_SIZE_ERR: Raised if the specified offset is negative or + * greater than the number of characters in \c data . + * + * NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly. + * + */ + Text splitText ( const unsigned long offset ); + +protected: + Text(TextImpl *i); + +}; + +} //namespace +#endif |