Class TiXmlHandle

depends/tinyxml/tinyxml.h:1638–1715

A TiXmlHandle is a class that wraps a node pointer with null checks; this is an incredibly useful thing. Note that TiXmlHandle is not part of the TinyXml DOM structure. It is a separate utility class. Take an example: @verbatim @endverbatim Assuming y

	@endverbatim
*/
class TiXmlHandle
{
public:
	/// Create a handle from any node (at any depth of the tree.) This can be a null pointer.
	TiXmlHandle( TiXmlNode* _node )					{ this->node = _node; }
	/// Copy constructor
	TiXmlHandle( const TiXmlHandle& ref )			{ this->node = ref.node; }
	TiXmlHandle operator=( const TiXmlHandle& ref ) { if ( &ref != this ) this->node = ref.node; return *this; }

	/// Return a handle to the first child node.
	TiXmlHandle FirstChild() const;
	/// Return a handle to the first child node with the given name.
	TiXmlHandle FirstChild( const char * value ) const;
	/// Return a handle to the first child element.
	TiXmlHandle FirstChildElement() const;
	/// Return a handle to the first child element with the given name.
	TiXmlHandle FirstChildElement( const char * value ) const;

	/** Return a handle to the "index" child with the given name. 
		The first child is 0, the second 1, etc.
	*/
	TiXmlHandle Child( const char* value, int index ) const;
	/** Return a handle to the "index" child. 
		The first child is 0, the second 1, etc.
	*/
	TiXmlHandle Child( int index ) const;
	/** Return a handle to the "index" child element with the given name. 
		The first child element is 0, the second 1, etc. Note that only TiXmlElements
		are indexed: other types are not counted.
	*/
	TiXmlHandle ChildElement( const char* value, int index ) const;
	/** Return a handle to the "index" child element. 
		The first child element is 0, the second 1, etc. Note that only TiXmlElements
		are indexed: other types are not counted.
	*/
	TiXmlHandle ChildElement( int index ) const;

	#ifdef TIXML_USE_STL
	TiXmlHandle FirstChild( const std::string& _value ) const				{ return FirstChild( _value.c_str() ); }
	TiXmlHandle FirstChildElement( const std::string& _value ) const		{ return FirstChildElement( _value.c_str() ); }

	TiXmlHandle Child( const std::string& _value, int index ) const			{ return Child( _value.c_str(), index ); }
	TiXmlHandle ChildElement( const std::string& _value, int index ) const	{ return ChildElement( _value.c_str(), index ); }
	#endif

	/** Return the handle as a TiXmlNode. This may return null.
	*/
	TiXmlNode* ToNode() const			{ return node; } 
	/** Return the handle as a TiXmlElement. This may return null.
	*/
	TiXmlElement* ToElement() const		{ return ( ( node && node->ToElement() ) ? node->ToElement() : 0 ); }
	/**	Return the handle as a TiXmlText. This may return null.
	*/
	TiXmlText* ToText() const			{ return ( ( node && node->ToText() ) ? node->ToText() : 0 ); }
	/** Return the handle as a TiXmlUnknown. This may return null.
	*/
	TiXmlUnknown* ToUnknown() const		{ return ( ( node && node->ToUnknown() ) ? node->ToUnknown() : 0 ); }