Library: XML
Package: DOM
Header: Poco/DOM/Document.h
The Document interface represents the entire HTML or XML document. Conceptually, it is the root of the document tree, and provides the primary access to the document's data.
Since elements, text nodes, comments, processing instructions, etc. cannot exist outside the context of a Document, the Document interface also contains the factory methods needed to create these objects. The Node objects created have a ownerDocument attribute which associates them with the Document within whose context they were created.
Direct Base Classes: AbstractContainerNode, DocumentEvent
All Base Classes: AbstractContainerNode, AbstractNode, DOMObject, DocumentEvent, EventTarget, Node
Member Functions: autoReleasePool, collectGarbage, copyNode, createAttribute, createAttributeNS, createCDATASection, createComment, createDocumentFragment, createElement, createElementNS, createEntity, createEntityReference, createEvent, createNotation, createProcessingInstruction, createTextNode, dispatchEvent, doctype, documentElement, events, eventsSuspended, getDoctype, getElementById, getElementByIdNS, getElementsByTagName, getElementsByTagNameNS, implementation, importNode, namePool, nodeName, nodeType, resumeEvents, setDoctype, suspendEvents
Inherited Functions: addEventListener, appendChild, attributes, autoRelease, bubbleEvent, captureEvent, childNodes, cloneNode, copyNode, createEvent, dispatchAttrModified, dispatchCharacterDataModified, dispatchEvent, dispatchNodeInserted, dispatchNodeInsertedIntoDocument, dispatchNodeRemoved, dispatchNodeRemovedFromDocument, dispatchSubtreeModified, duplicate, events, eventsSuspended, findAttribute, findElement, findNode, firstChild, getNodeByPath, getNodeByPathNS, getNodeValue, hasAttributeValue, hasAttributes, hasChildNodes, innerText, insertBefore, isSupported, lastChild, localName, namesAreEqual, namespaceURI, nextSibling, nodeName, nodeType, nodeValue, normalize, ownerDocument, parentNode, prefix, previousSibling, release, removeChild, removeEventListener, replaceChild, setNodeValue, setOwnerDocument
typedef Poco::AutoReleasePool < DOMObject > AutoReleasePool;
Document(
NamePool * pNamePool = 0
);
Creates a new document. If pNamePool == 0, the document creates its own name pool, otherwise it uses the given name pool. Sharing a name pool makes sense for documents containing instances of the same schema, thus reducing memory usage.
Document(
DocumentType * pDocumentType,
NamePool * pNamePool = 0
);
Creates a new document. If pNamePool == 0, the document creates its own name pool, otherwise it uses the given name pool. Sharing a name pool makes sense for documents containing instances of the same schema, thus reducing memory usage.
~Document();
AutoReleasePool & autoReleasePool();
Returns a pointer to the documents Auto Release Pool.
void collectGarbage();
Releases all objects in the Auto Release Pool.
Attr * createAttribute(
const XMLString & name
) const;
Creates an Attr of the given name. Note that the Attr instance can then be set on an Element using the setAttributeNode method.
Attr * createAttributeNS(
const XMLString & namespaceURI,
const XMLString & qualifiedName
) const;
Creates an attribute of the given qualified name and namespace URI.
CDATASection * createCDATASection(
const XMLString & data
) const;
Creates a CDATASection node whose value is the specified string.
Comment * createComment(
const XMLString & data
) const;
Creates a comment node given the specified string.
DocumentFragment * createDocumentFragment() const;
Creates an empty DocumentFragment object.
Element * createElement(
const XMLString & tagName
) const;
Creates an element of the type specified. Note that the instance returned implements the Element interface, so attributes can be specified directly on the returned object.
In addition, if there are known attributes with default values, Attr nodes representing them are automatically created and attached to the element.
Element * createElementNS(
const XMLString & namespaceURI,
const XMLString & qualifiedName
) const;
Creates an element of the given qualified name and namespace URI.
Entity * createEntity(
const XMLString & name,
const XMLString & publicId,
const XMLString & systemId,
const XMLString & notationName
) const;
Creates an Entity with the given name, publicId, systemId and notationName.
This method is not part of the W3C Document Object Model.
EntityReference * createEntityReference(
const XMLString & name
) const;
Creates an EntityReference object. In addition, if the referenced entity is known, the child list of the EntityReference node is made the same as that of the corresponding Entity node.
Event * createEvent(
const XMLString & eventType
) const;
See also: Poco::XML::DocumentEvent::createEvent()
Notation * createNotation(
const XMLString & name,
const XMLString & publicId,
const XMLString & systemId
) const;
Creates a Notation with the given name, publicId and systemId.
This method is not part of the W3C Document Object Model.
ProcessingInstruction * createProcessingInstruction(
const XMLString & target,
const XMLString & data
) const;
Creates a ProcessingInstruction node given the specified target and data strings.
Text * createTextNode(
const XMLString & data
) const;
Creates a text node given the specified string.
bool dispatchEvent(
Event * evt
);
See also: Poco::XML::AbstractNode::dispatchEvent()
const DocumentType * doctype() const;
The Document Type Declaration (see DocumentType) associated with this document. For HTML documents as well as XML documents without a document type declaration this returns null. The DOM Level 1 does not support editing the Document Type Declaration. docType cannot be altered in any way, including through the use of methods inherited from the Node interface, such as insertNode or removeNode.
Element * documentElement() const;
This is a convenience attribute that allows direct access to the child node that is the root element of the document. For HTML documents, this is the element with the tagName "HTML".
bool events() const;
Returns true if events are not suspeded.
See also: Poco::XML::AbstractNode::events()
bool eventsSuspended() const;
Returns true if events are suspeded.
Element * getElementById(
const XMLString & elementId
) const;
Returns the Element whose ID is given by elementId. If no such element exists, returns null. Behavior is not defined if more than one element has this ID.
Note: The DOM implementation must have information that says which attributes are of type ID. Attributes with the name "ID" are not of type ID unless so defined. Implementations that do not know whether attributes are of type ID or not are expected to return null. This implementation therefore returns null.
See also the non-standard two argument variant of getElementById() and getElementByIdNS().
Element * getElementById(
const XMLString & elementId,
const XMLString & idAttribute
) const;
Returns the first Element whose ID attribute (given in idAttribute) has the given elementId. If no such element exists, returns null.
This method is an extension to the W3C Document Object Model.
Element * getElementByIdNS(
const XMLString & elementId,
const XMLString & idAttributeURI,
const XMLString & idAttributeLocalName
) const;
Returns the first Element whose ID attribute (given in idAttributeURI and idAttributeLocalName) has the given elementId. If no such element exists, returns null.
This method is an extension to the W3C Document Object Model.
NodeList * getElementsByTagName(
const XMLString & name
) const;
Returns a NodeList of all Elements with a given tag name in the order in which they would be encountered in a preorder traversal of the document tree.
The returned NodeList must be released with a call to release() when no longer needed.
NodeList * getElementsByTagNameNS(
const XMLString & namespaceURI,
const XMLString & localName
) const;
Returns a NodeList of all the Elements with a given local name and namespace URI in the order in which they are encountered in a preorder traversal of the Document tree.
const DOMImplementation & implementation() const;
The DOMImplementation object that handles this document. A DOM application may use objects from multiple implementations.
Node * importNode(
Node * importedNode,
bool deep
);
Imports a node from another document to this document. The returned node has no parent; (parentNode is null). The source node is not altered or removed from the original document; this method creates a new copy of the source node. For all nodes, importing a node creates a node object owned by the importing document, with attribute values identical to the source node's nodeName and nodeType, plus the attributes related to namespaces (prefix, localName, and namespaceURI). As in the cloneNode operation on a Node, the source node is not altered. Additional information is copied as appropriate to the nodeType, attempting to mirror the behavior expected if a fragment of XML or HTML source was copied from one document to another, recognizing that the two documents may have different DTDs in the XML case.
NamePool & namePool();
Returns a pointer to the documents Name Pool.
const XMLString & nodeName() const;
See also: Poco::XML::AbstractNode::nodeName()
unsigned short nodeType() const;
See also: Poco::XML::Node::nodeType()
void resumeEvents();
Resumes all events suspended with suspendEvent();
void suspendEvents();
Suspends all events until resumeEvents() is called.
Node * copyNode(
bool deep,
Document * pOwnerDocument
) const;
See also: Poco::XML::AbstractNode::copyNode()
DocumentType * getDoctype();
void setDoctype(
DocumentType * pDoctype
);