\reentrant More...

#include <qdom.h>

Inheritance diagram for QDomDocument:

Collaboration diagram for QDomDocument:

Classes
struct	ParseResult
	The struct is used to store the result of QDomDocument::setContent(). More...

Public Types
enum class	ParseOption { Default = 0x00 , UseNamespaceProcessing = 0x01 , PreserveSpacingOnlyNodes = 0x02 }

Public Types inherited from QDomNode
enum	NodeType { ElementNode = 1 , AttributeNode = 2 , TextNode = 3 , CDATASectionNode = 4 , EntityReferenceNode = 5 , EntityNode = 6 , ProcessingInstructionNode = 7 , CommentNode = 8 , DocumentNode = 9 , DocumentTypeNode = 10 , DocumentFragmentNode = 11 , NotationNode = 12 , BaseNode = 21 , CharacterDataNode = 22 }
	This enum defines the type of the node: \value ElementNode \value AttributeNode \value TextNode \value CDATASectionNode \value EntityReferenceNode \value EntityNode \value ProcessingInstructionNode \value CommentNode \value DocumentNode \value DocumentTypeNode \value DocumentFragmentNode \value NotationNode \value BaseNode A QDomNode object, i.e. More...

enum	EncodingPolicy { EncodingFromDocument = 1 , EncodingFromTextStream = 2 }

Public Member Functions
	QDomDocument ()
	Constructs an empty document.

	QDomDocument (const QString &name)
	Creates a document and sets the name of the document type to name.

	QDomDocument (const QDomDocumentType &doctype)
	Creates a document with the document type doctype.

	QDomDocument (const QDomDocument &document)
	Constructs a copy of document.

QDomDocument &	operator= (const QDomDocument &other)
	Assigns other to this DOM document.

	~QDomDocument ()
	Destroys the object and frees its resources.

QDomElement	createElement (const QString &tagName)
	Creates a new element called tagName that can be inserted into the DOM tree, e.g.

QDomDocumentFragment	createDocumentFragment ()
	Creates a new document fragment, that can be used to hold parts of the document, e.g.

QDomText	createTextNode (const QString &data)
	Creates a text node for the string value that can be inserted into the document tree, e.g.

QDomComment	createComment (const QString &data)
	Creates a new comment for the string value that can be inserted into the document, e.g.

QDomCDATASection	createCDATASection (const QString &data)
	Creates a new CDATA section for the string value that can be inserted into the document, e.g.

QDomProcessingInstruction	createProcessingInstruction (const QString &target, const QString &data)
	Creates a new processing instruction that can be inserted into the document, e.g.

QDomAttr	createAttribute (const QString &name)
	Creates a new attribute called name that can be inserted into an element, e.g.

QDomEntityReference	createEntityReference (const QString &name)
	Creates a new entity reference called name that can be inserted into the document, e.g.

QDomNodeList	elementsByTagName (const QString &tagname) const
	Returns a QDomNodeList, that contains all the elements in the document with the name tagname.

QDomNode	importNode (const QDomNode &importedNode, bool deep)
	Imports the node importedNode from another document to this document.

QDomElement	createElementNS (const QString &nsURI, const QString &qName)
	Creates a new element with namespace support that can be inserted into the DOM tree.

QDomAttr	createAttributeNS (const QString &nsURI, const QString &qName)
	Creates a new attribute with namespace support that can be inserted into an element.

QDomNodeList	elementsByTagNameNS (const QString &nsURI, const QString &localName)
	Returns a QDomNodeList that contains all the elements in the document with the local name localName and a namespace URI of nsURI.

QDomElement	elementById (const QString &elementId)
	Returns the element whose ID is equal to elementId.

QDomDocumentType	doctype () const
	Returns the document type of this document.

QDomImplementation	implementation () const
	Returns a QDomImplementation object.

QDomElement	documentElement () const
	Returns the root element of the document.

QDomNode::NodeType	nodeType () const
	Returns `DocumentNode`.

Q_WEAK_OVERLOAD ParseResult	setContent (const QByteArray &data, ParseOptions options=ParseOption::Default)

ParseResult	setContent (QAnyStringView data, ParseOptions options=ParseOption::Default)

ParseResult	setContent (QIODevice *device, ParseOptions options=ParseOption::Default)

ParseResult	setContent (QXmlStreamReader *reader, ParseOptions options=ParseOption::Default)

QString	toString (int indent=1) const
	Converts the parsed document back to its textual representation.

QByteArray	toByteArray (int indent=1) const
	Converts the parsed document back to its textual representation and returns a QByteArray containing the data encoded as UTF-8.

Public Member Functions inherited from QDomNode
	QDomNode ()
	Constructs a \l{isNull()}{null} node.

	QDomNode (const QDomNode &node)
	Constructs a copy of node.

QDomNode &	operator= (const QDomNode &other)
	Assigns a copy of other to this DOM node.

bool	operator== (const QDomNode &other) const
	Returns `true` if other and this DOM node are equal; otherwise returns `false`.

bool	operator!= (const QDomNode &other) const
	Returns `true` if other and this DOM node are not equal; otherwise returns `false`.

	~QDomNode ()
	Destroys the object and frees its resources.

QDomNode	insertBefore (const QDomNode &newChild, const QDomNode &refChild)
	Inserts the node newChild before the child node refChild.

QDomNode	insertAfter (const QDomNode &newChild, const QDomNode &refChild)
	Inserts the node newChild after the child node refChild.

QDomNode	replaceChild (const QDomNode &newChild, const QDomNode &oldChild)
	Replaces oldChild with newChild.

QDomNode	removeChild (const QDomNode &oldChild)
	Removes oldChild from the list of children.

QDomNode	appendChild (const QDomNode &newChild)
	Appends newChild as the node's last child.

bool	hasChildNodes () const
	Returns `true` if the node has one or more children; otherwise returns `false`.

QDomNode	cloneNode (bool deep=true) const
	Creates a deep (not shallow) copy of the QDomNode.

void	normalize ()
	Calling normalize() on an element converts all its children into a standard form.

bool	isSupported (const QString &feature, const QString &version) const
	Returns `true` if the DOM implementation implements the feature feature and this feature is supported by this node in the version version; otherwise returns `false`.

QString	nodeName () const
	Returns the name of the node.

NodeType	nodeType () const
	Returns the type of the node.

QDomNode	parentNode () const
	Returns the parent node.

QDomNodeList	childNodes () const
	Returns a list of all direct child nodes.

QDomNode	firstChild () const
	Returns the first child of the node.

QDomNode	lastChild () const
	Returns the last child of the node.

QDomNode	previousSibling () const
	Returns the previous sibling in the document tree.

QDomNode	nextSibling () const
	Returns the next sibling in the document tree.

QDomNamedNodeMap	attributes () const
	Returns a named node map of all attributes.

QDomDocument	ownerDocument () const
	Returns the document to which this node belongs.

QString	namespaceURI () const
	Returns the namespace URI of this node or an empty string if the node has no namespace URI.

QString	localName () const
	If the node uses namespaces, this function returns the local name of the node; otherwise it returns an empty string.

bool	hasAttributes () const
	Returns `true` if the node has attributes; otherwise returns `false`.

QString	nodeValue () const
	Returns the value of the node.

void	setNodeValue (const QString &value)
	Sets the node's value to value.

QString	prefix () const
	Returns the namespace prefix of the node or an empty string if the node has no namespace prefix.

void	setPrefix (const QString &pre)
	If the node has a namespace prefix, this function changes the namespace prefix of the node to pre.

bool	isAttr () const
	Returns `true` if the node is an attribute; otherwise returns `false`.

bool	isCDATASection () const
	Returns `true` if the node is a CDATA section; otherwise returns false.

bool	isDocumentFragment () const
	Returns `true` if the node is a document fragment; otherwise returns false.

bool	isDocument () const
	Returns `true` if the node is a document; otherwise returns `false`.

bool	isDocumentType () const
	Returns `true` if the node is a document type; otherwise returns false.

bool	isElement () const
	Returns `true` if the node is an element; otherwise returns `false`.

bool	isEntityReference () const
	Returns `true` if the node is an entity reference; otherwise returns false.

bool	isText () const
	Returns `true` if the node is a text node; otherwise returns `false`.

bool	isEntity () const
	Returns `true` if the node is an entity; otherwise returns `false`.

bool	isNotation () const
	Returns `true` if the node is a notation; otherwise returns `false`.

bool	isProcessingInstruction () const
	Returns `true` if the node is a processing instruction; otherwise returns `false`.

bool	isCharacterData () const
	Returns `true` if the node is a character data node; otherwise returns `false`.

bool	isComment () const
	Returns `true` if the node is a comment; otherwise returns `false`.

QDomNode	namedItem (const QString &name) const
	Returns the first direct child node for which nodeName() equals name.

bool	isNull () const
	Returns `true` if this node is null (i.e.

void	clear ()
	Converts the node into a null node; if it was not a null node before, its type and contents are deleted.

QDomAttr	toAttr () const
	Converts a QDomNode into a QDomAttr.

QDomCDATASection	toCDATASection () const
	Converts a QDomNode into a QDomCDATASection.

QDomDocumentFragment	toDocumentFragment () const
	Converts a QDomNode into a QDomDocumentFragment.

QDomDocument	toDocument () const
	Converts a QDomNode into a QDomDocument.

QDomDocumentType	toDocumentType () const
	Converts a QDomNode into a QDomDocumentType.

QDomElement	toElement () const
	Converts a QDomNode into a QDomElement.

QDomEntityReference	toEntityReference () const
	Converts a QDomNode into a QDomEntityReference.

QDomText	toText () const
	Converts a QDomNode into a QDomText.

QDomEntity	toEntity () const
	Converts a QDomNode into a QDomEntity.

QDomNotation	toNotation () const
	Converts a QDomNode into a QDomNotation.

QDomProcessingInstruction	toProcessingInstruction () const
	Converts a QDomNode into a QDomProcessingInstruction.

QDomCharacterData	toCharacterData () const
	Converts a QDomNode into a QDomCharacterData.

QDomComment	toComment () const
	Converts a QDomNode into a QDomComment.

void	save (QTextStream &, int, EncodingPolicy=QDomNode::EncodingFromDocument) const
	Writes the XML representation of the node and all its children to the stream stream.

QDomElement	firstChildElement (const QString &tagName=QString(), const QString &namespaceURI=QString()) const
	Returns the first child element with tag name tagName and namespace URI namespaceURI.

QDomElement	lastChildElement (const QString &tagName=QString(), const QString &namespaceURI=QString()) const
	Returns the last child element with tag name tagName and namespace URI namespaceURI.

QDomElement	previousSiblingElement (const QString &tagName=QString(), const QString &namespaceURI=QString()) const
	Returns the previous sibling element with tag name tagName and namespace URI namespaceURI.

QDomElement	nextSiblingElement (const QString &taName=QString(), const QString &namespaceURI=QString()) const
	Returns the next sibling element with tag name tagName and namespace URI namespaceURI.

int	lineNumber () const

int	columnNumber () const

Friends
class	QDomNode

Additional Inherited Members
Protected Member Functions inherited from QDomNode
	QDomNode (QDomNodePrivate *)

Protected Attributes inherited from QDomNode
QDomNodePrivate *	impl

Related Symbols inherited from QDomNode
QTextStream &	operator<< (QTextStream &str, const QDomNode &node)
	Writes the XML representation of the node node and all its children to the stream str.

Detailed Description

\reentrant

The QDomDocument class represents an XML document.

\inmodule QtXml

The QDomDocument class represents the entire 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 class also contains the factory functions needed to create these objects. The node objects created have an ownerDocument() function which associates them with the document within whose context they were created. The DOM classes that will be used most often are QDomNode, QDomDocument, QDomElement and QDomText.

The parsed XML is represented internally by a tree of objects that can be accessed using the various QDom classes. All QDom classes only reference objects in the internal tree. The internal objects in the DOM tree will get deleted once the last QDom object referencing them or the QDomDocument itself is deleted.

Creation of elements, text nodes, etc. is done using the various factory functions provided in this class. Using the default constructors of the QDom classes will only result in empty objects that cannot be manipulated or inserted into the Document.

The QDomDocument class has several functions for creating document data, for example, createElement(), createTextNode(), createComment(), createCDATASection(), createProcessingInstruction(), createAttribute() and createEntityReference(). Some of these functions have versions that support namespaces, i.e. createElementNS() and createAttributeNS(). The createDocumentFragment() function is used to hold parts of the document; this is useful for manipulating for complex documents.

The entire content of the document is set with setContent(). This function parses the string it is passed as an XML document and creates the DOM tree that represents the document. The root element is available using documentElement(). The textual representation of the document can be obtained using toString().

Note: The DOM tree might end up reserving a lot of memory if the XML document is big. For such documents, the QXmlStreamReader class might be a better solution.

It is possible to insert a node from another document into the document using importNode().

You can obtain a list of all the elements that have a particular tag with elementsByTagName() or with elementsByTagNameNS().

The QDom classes are typically used as follows:

QDomDocument doc("mydocument");
QFile file("mydocument.xml");
if (!file.open(QIODevice::ReadOnly))
    return;
if (!doc.setContent(&file)) {
    file.close();
    return;
}
file.close();
 
// print out the element names of all elements that are direct children
// of the outermost element.
QDomElement docElem = doc.documentElement();
 
QDomNode n = docElem.firstChild();
while(!n.isNull()) {
    QDomElement e = n.toElement(); // try to convert the node to an element.
    if(!e.isNull()) {
        cout << qPrintable(e.tagName()) << '\n'; // the node really is an element.
    }
    n = n.nextSibling();
}
 
// Here we append a new element to the end of the document
QDomElement elem = doc.createElement("img");
elem.setAttribute("src", "myimage.png");
docElem.appendChild(elem);

Once doc and elem go out of scope, the whole internal tree representing the XML document is deleted.

To create a document using DOM use code like this:

QDomDocument doc;
QDomElement root = doc.createElement("MyML");
doc.appendChild(root);
 
QDomElement tag = doc.createElement("Greeting");
root.appendChild(tag);
 
QDomText t = doc.createTextNode("Hello World");
tag.appendChild(t);
 
QString xml = doc.toString();

For further information about the Document Object Model see the Document Object Model (DOM) \l{http://www.w3.org/TR/REC-DOM-Level-1/}{Level 1} and \l{http://www.w3.org/TR/DOM-Level-2-Core/}{Level 2 Core} Specifications.

See also: {DOM Bookmarks Application}

Definition at line 268 of file qdom.h.

Member Enumeration Documentation

◆ ParseOption

enum class QDomDocument::ParseOption

strong

Since: 6.5

This enum describes the possible options that can be used when parsing an XML document using the setContent() method.

\value Default No parse options are set. \value UseNamespaceProcessing Namespace processing is enabled. \value PreserveSpacingOnlyNodes Text nodes containing only spacing characters are preserved.

See also: setContent()

Enumerator
Default
UseNamespaceProcessing
PreserveSpacingOnlyNodes

Definition at line 271 of file qdom.h.

Constructor & Destructor Documentation

◆ QDomDocument() [1/4]

QDomDocument::QDomDocument ( )

Constructs an empty document.

Definition at line 6029 of file qdom.cpp.

References QDomNode::impl.

◆ QDomDocument() [2/4]

QDomDocument::QDomDocument ( const QString & name )

explicit

Creates a document and sets the name of the document type to name.

Definition at line 6038 of file qdom.cpp.

References QDomNode::impl.

◆ QDomDocument() [3/4]

QDomDocument::QDomDocument ( const QDomDocumentType & doctype )

explicit

Creates a document with the document type doctype.

See also: QDomImplementation::createDocumentType()

Definition at line 6049 of file qdom.cpp.

References doctype(), and QDomNode::impl.

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◆ QDomDocument() [4/4]

QDomDocument::QDomDocument ( const QDomDocument & document )

Constructs a copy of document.

The data of the copy is shared (shallow copy): modifying one node will also change the other. If you want to make a deep copy, use cloneNode().

Definition at line 6061 of file qdom.cpp.

◆ ~QDomDocument()

QDomDocument::~QDomDocument ( )

Destroys the object and frees its resources.

Definition at line 6083 of file qdom.cpp.

Member Function Documentation

◆ createAttribute()

QDomAttr QDomDocument::createAttribute ( const QString & name )

Creates a new attribute called name that can be inserted into an element, e.g.

using QDomElement::setAttributeNode().

If name is not a valid XML name, the behavior of this function is governed by QDomImplementation::InvalidDataPolicy.

See also: createAttributeNS()

Definition at line 6604 of file qdom.cpp.

References IMPL, and QDomNode::impl.

◆ createAttributeNS()

QDomAttr QDomDocument::createAttributeNS	(	const QString &	nsURI,
		const QString &	qName )

Creates a new attribute with namespace support that can be inserted into an element.

The name of the attribute is qName and the namespace URI is nsURI. This function also sets QDomNode::prefix() and QDomNode::localName() to appropriate values (depending on qName).

If qName is not a valid XML name, the behavior of this function is governed by QDomImplementation::InvalidDataPolicy.

See also: createAttribute()

Definition at line 6749 of file qdom.cpp.

References IMPL, and QDomNode::impl.

◆ createCDATASection()

QDomCDATASection QDomDocument::createCDATASection ( const QString & value )

Creates a new CDATA section for the string value that can be inserted into the document, e.g.

using QDomNode::appendChild().

If value contains characters which cannot be stored in a CDATA section, the behavior of this function is governed by QDomImplementation::InvalidDataPolicy.

See also: QDomNode::appendChild(), QDomNode::insertBefore(), QDomNode::insertAfter()

Definition at line 6567 of file qdom.cpp.

References IMPL, and QDomNode::impl.

◆ createComment()

QDomComment QDomDocument::createComment ( const QString & value )

Creates a new comment for the string value that can be inserted into the document, e.g.

using QDomNode::appendChild().

If value contains characters which cannot be stored in an XML comment, the behavior of this function is governed by QDomImplementation::InvalidDataPolicy.

See also: QDomNode::appendChild(), QDomNode::insertBefore(), QDomNode::insertAfter()

Definition at line 6550 of file qdom.cpp.

References IMPL, and QDomNode::impl.

◆ createDocumentFragment()

QDomDocumentFragment QDomDocument::createDocumentFragment ( )

Creates a new document fragment, that can be used to hold parts of the document, e.g.

when doing complex manipulations of the document tree.

Definition at line 6517 of file qdom.cpp.

References IMPL, and QDomNode::impl.

◆ createElement()

QDomElement QDomDocument::createElement ( const QString & tagName )

Creates a new element called tagName that can be inserted into the DOM tree, e.g.

using QDomNode::appendChild().

If tagName is not a valid XML name, the behavior of this function is governed by QDomImplementation::InvalidDataPolicy.

See also: createElementNS(), QDomNode::appendChild(), QDomNode::insertBefore(), QDomNode::insertAfter()

Definition at line 6505 of file qdom.cpp.

References IMPL, and QDomNode::impl.

Referenced by DocAppend(), FileContent(), XmlWriter::toXml(), and XML_snippet_main().

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◆ createElementNS()

QDomElement QDomDocument::createElementNS	(	const QString &	nsURI,
		const QString &	qName )

Creates a new element with namespace support that can be inserted into the DOM tree.

The name of the element is qName and the namespace URI is nsURI. This function also sets QDomNode::prefix() and QDomNode::localName() to appropriate values (depending on qName).

If qName is an empty string, returns a null element regardless of whether the invalid data policy is set.

See also: createElement()

Definition at line 6730 of file qdom.cpp.

References IMPL, and QDomNode::impl.

Referenced by QDomImplementation::createDocument().

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◆ createEntityReference()

QDomEntityReference QDomDocument::createEntityReference ( const QString & name )

Creates a new entity reference called name that can be inserted into the document, e.g.

using QDomNode::appendChild().

If name is not a valid XML name, the behavior of this function is governed by QDomImplementation::InvalidDataPolicy.

See also: QDomNode::appendChild(), QDomNode::insertBefore(), QDomNode::insertAfter()

Definition at line 6620 of file qdom.cpp.

References IMPL, and QDomNode::impl.

◆ createProcessingInstruction()

QDomProcessingInstruction QDomDocument::createProcessingInstruction	(	const QString &	target,
		const QString &	data )

Creates a new processing instruction that can be inserted into the document, e.g.

using QDomNode::appendChild(). This function sets the target for the processing instruction to target and the data to data.

If target is not a valid XML name, or data if contains characters which cannot appear in a processing instruction, the behavior of this function is governed by QDomImplementation::InvalidDataPolicy.

See also: QDomNode::appendChild(), QDomNode::insertBefore(), QDomNode::insertAfter()

Definition at line 6586 of file qdom.cpp.

References IMPL, and QDomNode::impl.

Referenced by XmlWriter::toXml().

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◆ createTextNode()

QDomText QDomDocument::createTextNode ( const QString & value )

Creates a text node for the string value that can be inserted into the document tree, e.g.

using QDomNode::appendChild().

If value contains characters which cannot be stored as character data of an XML document (even in the form of character references), the behavior of this function is governed by QDomImplementation::InvalidDataPolicy.

See also: QDomNode::appendChild(), QDomNode::insertBefore(), QDomNode::insertAfter()

Definition at line 6534 of file qdom.cpp.

References IMPL, and QDomNode::impl.

Referenced by DocAppend().

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◆ doctype()

QDomDocumentType QDomDocument::doctype ( ) const

Returns the document type of this document.

Definition at line 6468 of file qdom.cpp.

References IMPL, QDomNode::impl, and QDomNode::QDomDocumentType.

Referenced by QDomDocument().

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◆ documentElement()

QDomElement QDomDocument::documentElement ( ) const

Returns the root element of the document.

Definition at line 6488 of file qdom.cpp.

References IMPL, and QDomNode::impl.

Referenced by DomText(), and FileContent().

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◆ elementById()

QDomElement QDomDocument::elementById ( const QString & elementId )

Returns the element whose ID is equal to elementId.

If no element with the ID was found, this function returns a \l{QDomNode::isNull()}{null element}.

Since the QDomClasses do not know which attributes are element IDs, this function returns always a \l{QDomNode::isNull()}{null element}. This may change in a future version.

Definition at line 6779 of file qdom.cpp.

References qWarning.

◆ elementsByTagName()

QDomNodeList QDomDocument::elementsByTagName ( const QString & tagname ) const

Returns a QDomNodeList, that contains all the elements in the document with the name tagname.

The order of the node list is the order they are encountered in a preorder traversal of the element tree.

See also: elementsByTagNameNS(), QDomElement::elementsByTagName()

Definition at line 6635 of file qdom.cpp.

References QDomNode::impl, and QDomNode::QDomNodeList.

◆ elementsByTagNameNS()

QDomNodeList QDomDocument::elementsByTagNameNS	(	const QString &	nsURI,
		const QString &	localName )

Returns a QDomNodeList that contains all the elements in the document with the local name localName and a namespace URI of nsURI.

The order of the node list is the order they are encountered in a preorder traversal of the element tree.

See also: elementsByTagName(), QDomElement::elementsByTagNameNS()

Definition at line 6764 of file qdom.cpp.

References QDomNode::impl, QDomNode::localName(), and QDomNode::QDomNodeList.

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◆ implementation()

QDomImplementation QDomDocument::implementation ( ) const

Returns a QDomImplementation object.

Definition at line 6478 of file qdom.cpp.

References IMPL, and QDomNode::impl.

◆ importNode()

QDomNode QDomDocument::importNode	(	const QDomNode &	importedNode,
		bool	deep )

Imports the node importedNode from another document to this document.

importedNode remains in the original document; this function creates a copy that can be used within this document.

This function returns the imported node that belongs to this document. The returned node has no parent. It is not possible to import QDomDocument and QDomDocumentType nodes. In those cases this function returns a \l{QDomNode::isNull()}{null node}.

If importedNode is a \l{QDomNode::isNull()}{null node}, a null node is returned.

If deep is true, this function imports not only the node importedNode but its whole subtree; if it is false, only the importedNode is imported. The argument deep has no effect on QDomAttr and QDomEntityReference nodes, since the descendants of QDomAttr nodes are always imported and those of QDomEntityReference nodes are never imported.

The behavior of this function is slightly different depending on the node types: \table \header

Node Type
Behavior \row
QDomAttr
The owner element is set to 0 and the specified flag is set to true in the generated attribute. The whole subtree of importedNode is always imported for attribute nodes: deep has no effect. \row
QDomDocument
Document nodes cannot be imported. \row
QDomDocumentFragment
If deep is true, this function imports the whole document fragment; otherwise it only generates an empty document fragment. \row
QDomDocumentType
Document type nodes cannot be imported. \row
QDomElement
Attributes for which QDomAttr::specified() is true are also imported, other attributes are not imported. If deep is true, this function also imports the subtree of importedNode; otherwise it imports only the element node (and some attributes, see above). \row
QDomEntity
Entity nodes can be imported, but at the moment there is no way to use them since the document type is read-only in DOM level 2. \row
QDomEntityReference
Descendants of entity reference nodes are never imported: deep has no effect. \row
QDomNotation
Notation nodes can be imported, but at the moment there is no way to use them since the document type is read-only in DOM level 2. \row
QDomProcessingInstruction
The target and value of the processing instruction is copied to the new node. \row
QDomText
The text is copied to the new node. \row
QDomCDATASection
The text is copied to the new node. \row
QDomComment
The text is copied to the new node. \endtable

See also: QDomElement::setAttribute(), QDomNode::insertBefore(), QDomNode::insertAfter(), QDomNode::replaceChild(), QDomNode::removeChild(), QDomNode::appendChild()

Definition at line 6709 of file qdom.cpp.

References IMPL, QDomNode::impl, and QDomNode.

◆ nodeType()

QDomNode::NodeType QDomDocument::nodeType ( ) const

inline

Returns DocumentNode.

Definition at line 316 of file qdom.h.

◆ operator=()

QDomDocument & QDomDocument::operator= ( const QDomDocument & other )

default

Assigns other to this DOM document.

The data of the copy is shared (shallow copy): modifying one node will also change the other. If you want to make a deep copy, use cloneNode().

◆ setContent() [1/4]

ParseResult QDomDocument::setContent	(	const QByteArray &	data,
		ParseOptions	options = ParseOption::Default )

inline

Definition at line 338 of file qdom.h.

Referenced by FileContent(), setContent(), and setContent().

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◆ setContent() [2/4]

QDomDocument::ParseResult QDomDocument::setContent	(	QAnyStringView	data,
		ParseOptions	options = ParseOption::Default )

Definition at line 6399 of file qdom.cpp.

References setContent(), and UseNamespaceProcessing.

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◆ setContent() [3/4]

QDomDocument::ParseResult QDomDocument::setContent	(	QIODevice *	device,
		ParseOptions	options = ParseOption::Default )

Definition at line 6406 of file qdom.cpp.

References device, error, qPrintable, qWarning, QIODeviceBase::ReadOnly, setContent(), and UseNamespaceProcessing.

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◆ setContent() [4/4]

QDomDocument::ParseResult QDomDocument::setContent	(	QXmlStreamReader *	reader,
		ParseOptions	options = ParseOption::Default )

Since: 6.5

This function parses the XML document from the byte array data, string view text, IO device, or stream reader and sets it as the content of the document. It tries to detect the encoding of the document, in accordance with the XML specification. Returns the result of parsing in ParseResult, which explicitly converts to bool.

You can use the options parameter to specify different parsing options, for example, to enable namespace processing, etc.

By default, namespace processing is disabled. If it's disabled, the parser does no namespace processing when it reads the XML file. The functions QDomNode::prefix(), QDomNode::localName() and QDomNode::namespaceURI() return an empty string.

If namespace processing is enabled via the parse options, the parser recognizes namespaces in the XML file and sets the prefix name, local name and namespace URI to appropriate values. The functions QDomNode::prefix(), QDomNode::localName() and QDomNode::namespaceURI() return a string for all elements and attributes and return an empty string if the element or attribute has no prefix.

Text nodes consisting only of whitespace are stripped and won't appear in the QDomDocument. Since Qt 6.5, one can pass QDomDocument::ParseOption::PreserveSpacingOnlyNodes as a parse option, to specify that spacing-only text nodes must be preserved.

entity-refs

Note: The overload taking IO device will try to open it in read-only mode if it is not already open. In that case, the caller is responsible for calling close. This will change in Qt 7, which will no longer open the IO device. Applications should therefore open the device themselves before calling setContent().

See also: ParseResult, ParseOptions

Definition at line 6425 of file qdom.cpp.

References IMPL, and QDomNode::impl.

◆ toByteArray()

QByteArray QDomDocument::toByteArray ( int indent = 1 ) const

Converts the parsed document back to its textual representation and returns a QByteArray containing the data encoded as UTF-8.

This function uses indent as the amount of space to indent subelements.

See also: toString()

Definition at line 6457 of file qdom.cpp.

References toString(), and QString::toUtf8().

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◆ toString()

QString QDomDocument::toString ( int indent = 1 ) const

Converts the parsed document back to its textual representation.

This function uses indent as the amount of space to indent subelements.

If indent is -1, no whitespace at all is added.

Definition at line 6440 of file qdom.cpp.

References QDomNode::save(), str, and QIODeviceBase::WriteOnly.

Referenced by DocAppend(), and toByteArray().

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Friends And Related Symbol Documentation

◆ QDomNode

friend class QDomNode

friend

Definition at line 353 of file qdom.h.

Referenced by importNode().

The documentation for this class was generated from the following files:

qtbase/src/xml/dom/qdom.h (de0230467c1f658232b101a99e62d68992173592)
qtbase/src/xml/dom/qdom.cpp (b1e8287b8db5463f9a933302a27671b2b0ca1fa5)

Classes

Public Types

Public Member Functions

Friends

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ ParseOption

Constructor & Destructor Documentation

◆ QDomDocument() [1/4]

◆ QDomDocument() [2/4]

◆ QDomDocument() [3/4]

◆ QDomDocument() [4/4]

◆ ~QDomDocument()

Member Function Documentation

◆ createAttribute()

◆ createAttributeNS()

◆ createCDATASection()

◆ createComment()

◆ createDocumentFragment()

◆ createElement()

◆ createElementNS()

◆ createEntityReference()

◆ createProcessingInstruction()

◆ createTextNode()

◆ doctype()

◆ documentElement()

◆ elementById()

◆ elementsByTagName()

◆ elementsByTagNameNS()

◆ implementation()

◆ importNode()

◆ nodeType()

◆ operator=()

◆ setContent() [1/4]

◆ setContent() [2/4]

◆ setContent() [3/4]

◆ setContent() [4/4]

◆ toByteArray()

◆ toString()

Friends And Related Symbol Documentation

◆ QDomNode