home *** CD-ROM | disk | FTP | other *** search
- =head1 NAME
-
- XML::DOM::CharacterData - Common interface for Text, CDATASections and Comments
-
- =head1 DESCRIPTION
-
- XML::DOM::CharacterData extends L<XML::DOM::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, Comment and CDATASection do inherit the interface from it.
- All offsets in this interface start from 0.
-
- =head2 METHODS
-
- =over 4
-
- =item getData and setData (data)
-
- 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.
-
- =item 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.
-
- =item substringData (offset, count)
-
- Extracts a range of data from the node.
-
- Parameters:
- I<offset> Start offset of substring to extract.
- I<count> The number of characters to extract.
-
- Return Value: The specified substring. If the sum of offset and count
- exceeds the length, then all characters to the end of
- the data are returned.
-
- =item appendData (str)
-
- Appends 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.
-
- =item insertData (offset, arg)
-
- Inserts a string at the specified character offset.
-
- Parameters:
- I<offset> The character offset at which to insert.
- I<arg> The DOMString to insert.
-
- =item deleteData (offset, count)
-
- Removes a range of characters from the node.
- Upon success, data and length reflect the change.
- If the sum of offset and count exceeds length then all characters
- from offset to the end of the data are deleted.
-
- Parameters:
- I<offset> The offset from which to remove characters.
- I<count> The number of characters to delete.
-
- =item replaceData (offset, count, arg)
-
- Replaces the characters starting at the specified character
- offset with the specified string.
-
- Parameters:
- I<offset> The offset from which to start replacing.
- I<count> The number of characters to replace.
- I<arg> The DOMString with which the range must be replaced.
-
- 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).
-
- =back
-