Added in API level 1

DOMImplementation

interface DOMImplementation

org.w3c.dom.DOMImplementation

The DOMImplementation interface provides a number of methods for performing operations that are independent of any particular instance of the document object model.

Summary

Public methods
abstract Document!	`createDocument(namespaceURI: String!, qualifiedName: String!, doctype: DocumentType!)` Creates a DOM Document object of the specified type with its document element.
abstract DocumentType!	`createDocumentType(qualifiedName: String!, publicId: String!, systemId: String!)` Creates an empty `DocumentType` node.
abstract Any!	`getFeature(feature: String!, version: String!)` This method returns a specialized object which implements the specialized APIs of the specified feature and version, as specified in .
abstract Boolean	`hasFeature(feature: String!, version: String!)` Test if the DOM implementation implements a specific feature and version, as specified in .

Public methods

createDocument

Added in API level 1

abstract fun createDocument(
    namespaceURI: String!, 
    qualifiedName: String!, 
    doctype: DocumentType!
): Document!

Creates a DOM Document object of the specified type with its document element.
Note that based on the DocumentType given to create the document, the implementation may instantiate specialized Document objects that support additional features than the "Core", such as "HTML" [DOM Level 2 HTML] . On the other hand, setting the DocumentType after the document was created makes this very unlikely to happen. Alternatively, specialized Document creation methods, such as createHTMLDocument [DOM Level 2 HTML] , can be used to obtain specific types of Document objects.

Parameters
`namespaceURI`	String!: The namespace URI of the document element to create or `null`.
`qualifiedName`	String!: The qualified name of the document element to be created or `null`.
`doctype`	DocumentType!: The type of document to be created or `null`. When `doctype` is not `null`, its `Node.ownerDocument` attribute is set to the document being created.

Return
`Document!`	A new `Document` object with its document element. If the `NamespaceURI`, `qualifiedName`, and `doctype` are `null`, the returned `Document` is empty with no document element.

Exceptions

org.w3c.dom.DOMException INVALID_CHARACTER_ERR: Raised if the specified qualified name is not an XML name according to [XML 1.0].
NAMESPACE_ERR: Raised if the qualifiedName is malformed, if the qualifiedName has a prefix and the namespaceURI is null, or if the qualifiedName is null and the namespaceURI is different from null, or if the qualifiedName has a prefix that is "xml" and the namespaceURI is different from " http://www.w3.org/XML/1998/namespace" [XML Namespaces] , or if the DOM implementation does not support the "XML" feature but a non-null namespace URI was provided, since namespaces were defined by XML.
WRONG_DOCUMENT_ERR: Raised if doctype has already been used with a different document or was created from a different implementation.
NOT_SUPPORTED_ERR: May be raised if the implementation does not support the feature "XML" and the language exposed through the Document does not support XML Namespaces (such as [HTML 4.01]).

Exceptions
`org.w3c.dom.DOMException`	INVALID_CHARACTER_ERR: Raised if the specified qualified name is not an XML name according to [XML 1.0]. NAMESPACE_ERR: Raised if the `qualifiedName` is malformed, if the `qualifiedName` has a prefix and the `namespaceURI` is `null`, or if the `qualifiedName` is `null` and the `namespaceURI` is different from `null`, or if the `qualifiedName` has a prefix that is "xml" and the `namespaceURI` is different from " http://www.w3.org/XML/1998/namespace" [XML Namespaces] , or if the DOM implementation does not support the `"XML"` feature but a non-null namespace URI was provided, since namespaces were defined by XML. WRONG_DOCUMENT_ERR: Raised if `doctype` has already been used with a different document or was created from a different implementation. NOT_SUPPORTED_ERR: May be raised if the implementation does not support the feature "XML" and the language exposed through the Document does not support XML Namespaces (such as [HTML 4.01]).

createDocumentType

Added in API level 1

abstract fun createDocumentType(
    qualifiedName: String!, 
    publicId: String!, 
    systemId: String!
): DocumentType!

Creates an empty DocumentType node. Entity declarations and notations are not made available. Entity reference expansions and default attribute additions do not occur..

Parameters
`qualifiedName`	String!: The qualified name of the document type to be created.
`publicId`	String!: The external subset public identifier.
`systemId`	String!: The external subset system identifier.

Return
`DocumentType!`	A new `DocumentType` node with `Node.ownerDocument` set to `null`.

Exceptions
`org.w3c.dom.DOMException`	INVALID_CHARACTER_ERR: Raised if the specified qualified name is not an XML name according to [XML 1.0]. NAMESPACE_ERR: Raised if the `qualifiedName` is malformed. NOT_SUPPORTED_ERR: May be raised if the implementation does not support the feature "XML" and the language exposed through the Document does not support XML Namespaces (such as [HTML 4.01]).

getFeature

Added in API level 8

abstract fun getFeature(
    feature: String!, 
    version: String!
): Any!

This method returns a specialized object which implements the specialized APIs of the specified feature and version, as specified in . The specialized object may also be obtained by using binding-specific casting methods but is not necessarily expected to, as discussed in . This method also allow the implementation to provide specialized objects which do not support the DOMImplementation interface.

Parameters
`feature`	String!: The name of the feature requested. Note that any plus sign "+" prepended to the name of the feature will be ignored since it is not significant in the context of this method.
`version`	String!: This is the version number of the feature to test.

Return

Any! Returns an object which implements the specialized APIs of the specified feature and version, if any, or null if there is no object which implements interfaces associated with that feature. If the DOMObject returned by this method implements the DOMImplementation interface, it must delegate to the primary core DOMImplementation and not return results inconsistent with the primary core DOMImplementation such as hasFeature, getFeature, etc.

Return
`Any!`	Returns an object which implements the specialized APIs of the specified feature and version, if any, or `null` if there is no object which implements interfaces associated with that feature. If the `DOMObject` returned by this method implements the `DOMImplementation` interface, it must delegate to the primary core `DOMImplementation` and not return results inconsistent with the primary core `DOMImplementation` such as `hasFeature`, `getFeature`, etc.

hasFeature

Added in API level 1

abstract fun hasFeature(
    feature: String!, 
    version: String!
): Boolean

Test if the DOM implementation implements a specific feature and version, as specified in .

Parameters
`feature`	String!: The name of the feature to test.
`version`	String!: This is the version number of the feature to test.

Return
`Boolean`	`true` if the feature is implemented in the specified version, `false` otherwise.