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CharacterData.java API Doc Android 1.5 API 7907 Wed May 06 22:41:06 BST 2009 org.w3c.dom

CharacterData

public interface CharacterData implements 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.

As explained in the DOMString interface, text strings in the DOM are represented in UTF-16, i.e. as a sequence of 16-bit units. In the following, the term 16-bit units is used whenever necessary to indicate that indexing on CharacterData is done in 16-bit units.

Fields Summary
Constructors Summary
Methods Summary
public void appendData(java.lang.String arg)
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.
param
arg The DOMString to append.
exception
DOMException NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
public void deleteData(int offset, int count)
Remove a range of 16-bit units from the node. Upon success, data and length reflect the change.
param
offset The offset from which to start removing.
param
count The number of 16-bit units to delete. If the sum of offset and count exceeds length then all 16-bit units from offset to the end of the data are deleted.
exception
DOMException INDEX_SIZE_ERR: Raised if the specified offset is negative or greater than the number of 16-bit units in data, or if the specified count is negative.
NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
public java.lang.String getData()
Returns 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.
return
the character data as a string.
exception
DOMException DOMSTRING_SIZE_ERR: Raised when it would return more characters than fit in a DOMString variable on the implementation platform.
public int getLength()
The number of 16-bit units that are available through data and the substringData method below. This may have the value zero, i.e., CharacterData nodes may be empty.
return
the length in characters.
public void insertData(int offset, java.lang.String arg)
Insert a string at the specified 16-bit unit offset.
param
offset The character offset at which to insert.
param
arg The DOMString to insert.
exception
DOMException INDEX_SIZE_ERR: Raised if the specified offset is negative or greater than the number of 16-bit units in data.
NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
public void replaceData(int offset, int count, java.lang.String arg)
Replace the characters starting at the specified 16-bit unit offset with the specified string.
param
offset The offset from which to start replacing.
param
count The number of 16-bit units to replace. If the sum of offset and count exceeds length, then all 16-bit units 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).
param
arg The DOMString with which the range must be replaced.
exception
DOMException INDEX_SIZE_ERR: Raised if the specified offset is negative or greater than the number of 16-bit units in data, or if the specified count is negative.
NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
public void setData(java.lang.String data)
Sets 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.
param
data the new character data.
exception
DOMException NO_MODIFICATION_ALLOWED_ERR: Raised when the node is readonly.
public java.lang.String substringData(int offset, int count)
Extracts a range of data from the node.
param
offset Start offset of substring to extract.
param
count The number of 16-bit units to extract.
return
The specified substring. If the sum of offset and count exceeds the length, then all 16-bit units 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 16-bit units 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.