CEGUI::NamedXMLResourceManager< T, U > Class Template Reference

Templatised manager class that loads and manages named XML based resources. More...

Inheritance diagram for CEGUI::NamedXMLResourceManager< T, U >:

Collaboration diagram for CEGUI::NamedXMLResourceManager< T, U >:

Public Member Functions
	NamedXMLResourceManager (const String &resource_type)
	Constructor. More...
virtual	~NamedXMLResourceManager ()
	Destructor.
T &	create (const String &xml_filename, const String &resource_group="", XMLResourceExistsAction action=XREA_RETURN)
	Creates a new T object from an XML file and adds it to the collection. More...
void	destroy (const String &object_name)
	Destroy the object named object_name, or do nothing if such an object does not exist in the collection. More...
void	destroy (const T &object)
	Destroy the object object, or do nothing if such an object does not exist in the collection. More...
void	destroyAll ()
	Destroy all objects.
T &	get (const String &object_name) const
	Return a reference to the object named object_name. More...
bool	isDefined (const String &object_name) const
	Return whether an object named object_name exists.
void	createAll (const String &pattern, const String &resource_group)
	Create a new T object from files with names matching pattern in resource_group.

Protected Types
typedef std::map< String, T *, String::FastLessCompare >	ObjectRegistry
	type of collection used to store and manage objects

Protected Member Functions
void	destroyObject (typename ObjectRegistry::iterator ob)
	implementation of object destruction.
T &	doExistingObjectAction (const String object_name, T *object, const XMLResourceExistsAction action)
	function to enforce XMLResourceExistsAction policy.
virtual void	doPostObjectAdditionAction (T &object)
	Function called each time a new object is added to the collection.

Protected Attributes
const String	d_resourceType
	String holding the text for the resource type managed.
ObjectRegistry	d_objects
	the collection of objects

Additional Inherited Members
Public Types inherited from CEGUI::EventSet
typedef ConstBaseIterator < EventMap >	Iterator
Static Public Attributes inherited from CEGUI::ResourceEventSet
static const String	EventNamespace
	Namespace name for all resource managers.
static const String	EventResourceCreated
	Name of event fired when a resource is created by this manager.
static const String	EventResourceDestroyed
	Name of event fired when a resource is destroyed by this manager.
static const String	EventResourceReplaced
	Name of event fired when a resource is replaced by this manager.

Detailed Description

template<typename T, typename U>
class CEGUI::NamedXMLResourceManager< T, U >

Templatised manager class that loads and manages named XML based resources.

Template Parameters

T

Type for the object that is loaded and managed by the class.

U

Type for the loader used to create object instances of T from XML files. This class does all of the creation / loading work and can be of any form or type desired, with the following requirements: a constructor signature compatible with the following call: U(const String& xml_filename, const String& resource_group); a function getObjectName that returns the name of the object as specified in the XML file given in the constructor to U. a function getObject that returns a reference to the object created as a result of processing the XML file given in the constructor to U.

Note

Once NamedXMLResourceManager calls getObject on the instance of U, it assumes that it now owns the object returned, if no call to getObject is made, no such transfer of ownership is assumed.

Constructor & Destructor Documentation

template<typename T , typename U >

CEGUI::NamedXMLResourceManager< T, U >::NamedXMLResourceManager

(

const String &

resource_type

)

Constructor.

Parameters

resource_type

String object holding some textual indication of the type of objects managed by the collection. This is used to give more descriptive log and exception messages.

Member Function Documentation

template<typename T , typename U >

T & CEGUI::NamedXMLResourceManager< T, U >::create	(	const String &	xml_filename,
		const String &	resource_group = "",
		XMLResourceExistsAction	action = XREA_RETURN
	)

Creates a new T object from an XML file and adds it to the collection.

Use an instance of the xml resource loading class \a U to process the
XML file \a xml_filename from resource group \a resource_group thereby
creating an instance of class \a T and add it to the collection under
the name specified in the XML file.

Parameters

xml_filename	String holding the filename of the XML file to be used when creating the new object instance.
resource_group	String holding the name of the resource group identifier to be used when loading the XML file described by xml_filename.
action	One of the XMLResourceExistsAction enumerated values indicating what action should be taken when an object with the specified name already exists within the collection.

template<typename T , typename U >

void CEGUI::NamedXMLResourceManager< T, U >::destroy

(

const String &

object_name

)

Destroy the object named object_name, or do nothing if such an object does not exist in the collection.

Parameters

object_name

String holding the name of the object to be destroyed.

template<typename T, typename U >

void CEGUI::NamedXMLResourceManager< T, U >::destroy

(

const T &

object

)

Destroy the object object, or do nothing if such an object does not exist in the collection.

Parameters

object

The object to be destroyed (beware of keeping references to this object once it's been destroyed!)

template<typename T , typename U >

T & CEGUI::NamedXMLResourceManager< T, U >::get

(

const String &

object_name

)

const

Return a reference to the object named object_name.

Parameters

object_name

String holding the name of the object to be returned.

Exceptions

UnknownObjectException

thrown if no object named object_name exists within the collection.