org.w3c.dom
Interface CharacterData

All Known Subinterfaces:

CDATASection, Comment, Text

All Known Implementing Classes:

CharacterDataImpl

public abstract interface CharacterData

extends Node

The 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 CharacterData, though Text and others do inherit the interface from it. All offsets in this interface start from 0.

Fields inherited from class org.w3c.dom.Node

ATTRIBUTE_NODE, CDATA_SECTION_NODE, COMMENT_NODE, DOCUMENT_FRAGMENT_NODE, DOCUMENT_NODE, DOCUMENT_TYPE_NODE, ELEMENT_NODE, ENTITY_NODE, ENTITY_REFERENCE_NODE, NOTATION_NODE, PROCESSING_INSTRUCTION_NODE, TEXT_NODE

Method Summary

void	appendData(java.lang.String arg) Append the string to the end of the character data of the node.
void	deleteData(int offset, int count) Remove a range of characters from the node.
java.lang.String	getData() The character data of the node that implements this interface.
int	getLength() The number of characters that are available through data and the substringData method below.
void	insertData(int offset, java.lang.String arg) Insert a string at the specified character offset.
void	replaceData(int offset, int count, java.lang.String arg) Replace the characters starting at the specified character offset with the specified string.
void	setData(java.lang.String data)
java.lang.String	substringData(int offset, int count) Extracts a range of data from the node.

Methods inherited from interface org.w3c.dom.Node

appendChild, cloneNode, getAttributes, getChildNodes, getFirstChild, getLastChild, getNextSibling, getNodeName, getNodeType, getNodeValue, getOwnerDocument, getParentNode, getPreviousSibling, hasChildNodes, insertBefore, removeChild, replaceChild, setNodeValue

Method Detail

getData

public java.lang.String getData()
                         throws DOMException

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 CharacterData node. However, implementation limits may mean that the entirety of a node's data may not fit into a single DOMString. In such cases, the user may call substringData to retrieve the data in appropriately sized pieces.

Throws:

DOMException - NO_MODIFICATION_ALLOWED_ERR: Raised when the node is readonly.

DOMException - DOMSTRING_SIZE_ERR: Raised when it would return more characters than fit in a DOMString variable on the implementation platform.

setData

public void setData(java.lang.String data)
             throws DOMException

getLength

public int getLength()

The number of characters that are available through data and the substringData method below. This may have the value zero, i.e., CharacterData nodes may be empty.

substringData

public java.lang.String substringData(int offset,
                                      int count)
                               throws DOMException

Extracts a range of data from the node.

Parameters:

offset - Start offset of substring to extract.

count - The number of characters to extract.

Returns:

The specified substring. If the sum of offset and count exceeds the length, then all characters to the end of the data are returned.

Throws:

DOMException - INDEX_SIZE_ERR: Raised if the specified offset is negative or greater than the number of characters in data, or if the specified count is negative.
DOMSTRING_SIZE_ERR: Raised if the specified range of text does not fit into a DOMString.

appendData

public void appendData(java.lang.String arg)
                throws DOMException

Append the string to the end of the character data of the node. Upon success, data provides access to the concatenation of data and the DOMString specified.

Parameters:

arg - The DOMString to append.

Throws:

DOMException - NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.

insertData

public void insertData(int offset,
                       java.lang.String arg)
                throws DOMException

Insert a string at the specified character offset.

Parameters:

offset - The character offset at which to insert.

arg - The DOMString to insert.

Throws:

DOMException - INDEX_SIZE_ERR: Raised if the specified offset is negative or greater than the number of characters in data.
NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.

deleteData

public void deleteData(int offset,
                       int count)
                throws DOMException

Remove a range of characters from the node. Upon success, data and length reflect the change.

Parameters:

offset - The offset from which to remove characters.

count - The number of characters to delete. If the sum of offset and count exceeds length then all characters from offset to the end of the data are deleted.

Throws:

DOMException - INDEX_SIZE_ERR: Raised if the specified offset is negative or greater than the number of characters in data, or if the specified count is negative.
NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.

replaceData

public void replaceData(int offset,
                        int count,
                        java.lang.String arg)
                 throws DOMException

Replace the characters starting at the specified character offset with the specified string.

Parameters:

offset - The offset from which to start replacing.

count - The number of characters to replace. If the sum of offset and count exceeds length , then all characters to the end of the data are replaced (i.e., the effect is the same as a remove method call with the same range, followed by an append method invocation).

arg - The DOMString with which the range must be replaced.

Throws:

DOMException - INDEX_SIZE_ERR: Raised if the specified offset is negative or greater than the number of characters in data, or if the specified count is negative.
NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.