The QAbstractExtensionManager class provides an interface for extension managers in \QD. More...

#include <extension.h>

Inheritance diagram for QAbstractExtensionManager:

Collaboration diagram for QAbstractExtensionManager:

Public Member Functions
virtual	~QAbstractExtensionManager ()
	Destroys the extension manager.

virtual void	registerExtensions (QAbstractExtensionFactory *factory, const QString &iid)=0
	Register the given extension factory with the extension specified by iid.

virtual void	unregisterExtensions (QAbstractExtensionFactory *factory, const QString &iid)=0
	Unregister the given factory with the extension specified by iid.

virtual QObject *	extension (QObject *object, const QString &iid) const =0
	Returns the extension, specified by iid, for the given object.

Detailed Description

The QAbstractExtensionManager class provides an interface for extension managers in \QD.

\inmodule QtDesigner

QAbstractExtensionManager is not intended to be instantiated directly; use the QExtensionManager instead.

In \QD, extension are not created until they are required. For that reason, when implementing a custom extension, you must also create a QExtensionFactory, i.e a class that is able to make an instance of your extension, and register it using \QD's \l {QExtensionManager}{extension manager}.

When an extension is required, \QD's \l {QExtensionManager}{extension manager} will run through all its registered factories calling QExtensionFactory::createExtension() for each until the first one that is able to create the requested extension for the selected object, is found. This factory will then make an instance of the extension.