CharacterData - Android SDK

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Summary: Inherited Constants | Methods | Inherited Methods | [Expand All]

Added in API level 1

public interface

CharacterData

implements Node

org.w3c.dom.CharacterData

Known Indirect Subclasses

CDATASection, Comment, Text

Class Overview

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.

Summary

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Inherited Constants

From interface org.w3c.dom.Node

Public Methods
abstract void	appendData(String arg) Append the string to the end of the character data of the node.
abstract void	deleteData(int offset, int count) Remove a range of 16-bit units from the node.
abstract String	getData() The character data of the node that implements this interface.
abstract int	getLength() The number of 16-bit units that are available through `data` and the `substringData` method below.
abstract void	insertData(int offset, String arg) Insert a string at the specified 16-bit unit offset.
abstract void	replaceData(int offset, int count, String arg) Replace the characters starting at the specified 16-bit unit offset with the specified string.
abstract void	setData(String data) The character data of the node that implements this interface.
abstract String	substringData(int offset, int count) Extracts a range of data from the node.

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Inherited Methods

From interface org.w3c.dom.Node

abstract Node	appendChild(Node newChild) Adds the node `newChild` to the end of the list of children of this node.
abstract Node	cloneNode(boolean deep) Returns a duplicate of this node, i.e., serves as a generic copy constructor for nodes.
abstract short	compareDocumentPosition(Node other) Compares the reference node, i.e.
abstract NamedNodeMap	getAttributes() A `NamedNodeMap` containing the attributes of this node (if it is an `Element`) or `null` otherwise.
abstract String	getBaseURI() The absolute base URI of this node or `null` if the implementation wasn't able to obtain an absolute URI.
abstract NodeList	getChildNodes() A `NodeList` that contains all children of this node.
abstract Object	getFeature(String feature, String version) This method returns a specialized object which implements the specialized APIs of the specified feature and version, as specified in .
abstract Node	getFirstChild() The first child of this node.
abstract Node	getLastChild() The last child of this node.
abstract String	getLocalName() Returns the local part of the qualified name of this node.
abstract String	getNamespaceURI() The namespace URI of this node, or `null` if it is unspecified (see ).
abstract Node	getNextSibling() The node immediately following this node.
abstract String	getNodeName() The name of this node, depending on its type; see the table above.
abstract short	getNodeType() A code representing the type of the underlying object, as defined above.
abstract String	getNodeValue() The value of this node, depending on its type; see the table above.
abstract Document	getOwnerDocument() The `Document` object associated with this node.
abstract Node	getParentNode() The parent of this node.
abstract String	getPrefix() The namespace prefix of this node, or `null` if it is unspecified.
abstract Node	getPreviousSibling() The node immediately preceding this node.
abstract String	getTextContent() This attribute returns the text content of this node and its descendants.
abstract Object	getUserData(String key) Retrieves the object associated to a key on a this node.
abstract boolean	hasAttributes() Returns whether this node (if it is an element) has any attributes.
abstract boolean	hasChildNodes() Returns whether this node has any children.
abstract Node	insertBefore(Node newChild, Node refChild) Inserts the node `newChild` before the existing child node `refChild`.
abstract boolean	isDefaultNamespace(String namespaceURI) This method checks if the specified `namespaceURI` is the default namespace or not.
abstract boolean	isEqualNode(Node arg) Tests whether two nodes are equal.
abstract boolean	isSameNode(Node other) Returns whether this node is the same node as the given one.
abstract boolean	isSupported(String feature, String version) Tests whether the DOM implementation implements a specific feature and that feature is supported by this node, as specified in .
abstract String	lookupNamespaceURI(String prefix) Look up the namespace URI associated to the given prefix, starting from this node.
abstract String	lookupPrefix(String namespaceURI) Look up the prefix associated to the given namespace URI, starting from this node.
abstract void	normalize() Puts all `Text` nodes in the full depth of the sub-tree underneath this `Node`, including attribute nodes, into a "normal" form where only structure (e.g., elements, comments, processing instructions, CDATA sections, and entity references) separates `Text` nodes, i.e., there are neither adjacent `Text` nodes nor empty `Text` nodes.
abstract Node	removeChild(Node oldChild) Removes the child node indicated by `oldChild` from the list of children, and returns it.
abstract Node	replaceChild(Node newChild, Node oldChild) Replaces the child node `oldChild` with `newChild` in the list of children, and returns the `oldChild` node.
abstract void	setNodeValue(String nodeValue) The value of this node, depending on its type; see the table above.
abstract void	setPrefix(String prefix) The namespace prefix of this node, or `null` if it is unspecified.
abstract void	setTextContent(String textContent) This attribute returns the text content of this node and its descendants.
abstract Object	setUserData(String key, Object data, UserDataHandler handler) Associate an object to a key on this node.

Public Methods

public abstract void appendData (String arg)

Added in API level 1

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.

public abstract void deleteData (int offset, int count)

Added in API level 1

Remove a range of 16-bit units from the node. Upon success, data and length reflect the change.

Parameters

offset	The offset from which to start removing.
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.

Throws

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 abstract String getData ()

Added in API level 1

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

public abstract int getLength ()

Added in API level 1

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.

public abstract void insertData (int offset, String arg)

Added in API level 1

Insert a string at the specified 16-bit unit 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 16-bit units in `data`. NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.

public abstract void replaceData (int offset, int count, String arg)

Added in API level 1

Replace the characters starting at the specified 16-bit unit offset with the specified string.

Parameters

offset	The offset from which to start replacing.
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).
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 16-bit units in `data`, or if the specified `count` is negative. NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.

public abstract void setData (String data)

Added in API level 1

Throws

DOMException	NO_MODIFICATION_ALLOWED_ERR: Raised when the node is readonly.

public abstract String substringData (int offset, int count)

Added in API level 1

Extracts a range of data from the node.

Parameters

offset	Start offset of substring to extract.
count	The number of 16-bit units to extract.

Returns

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.

Throws

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`.

Results

Interfaces

Exceptions

CharacterData

Class Overview

Summary

Public Methods

public abstract void appendData (String arg)

Parameters

Throws

public abstract void deleteData (int offset, int count)

Parameters

Throws

public abstract String getData ()

Throws

public abstract int getLength ()

public abstract void insertData (int offset, String arg)

Parameters

Throws

public abstract void replaceData (int offset, int count, String arg)

Parameters

Throws

public abstract void setData (String data)

Throws

public abstract String substringData (int offset, int count)

Parameters

Returns

Throws