Graphical Modeling Framework Runtime - Eclipse Modeling Project: A Domain-Specific Language Toolkit - page 435

class —Fully qualified String containing the provider class.
Examples:
The following is an example PropertiesModifier extension:
<extension
point="org.eclipse.gmf.runtime.common.ui.services.properties.
propertyModifiers">
<PropertyModifier class="org.eclipse.test.project.ui.
properties.providers.
ReadOnlyDiagramPropertiesModifier">
<Priority name="Highest"/>
<Provider class="*"/>
</PropertyModifier>
</extension>
API information:
The value of the class attribute must represent a class that implements
org.eclipse.gmf.runtime.common.ui.services.properties.IProp-
ertiesModifier .
Notes:
Diagrams generated using the GMF tooling do not currently use this
extension-point.
10.4.18 DragDropListenerService
The DragDropListenerService works with the IDragDropListener
Provider to provide IDragSourceListener and IDropTargetListener
functionality for a specified context. The runtime supplies an AbstractDrag
DropListenerProvider , leaving the methods getDragSourceListener()
and getDropTargetListener() for implementation, as seen in Figure 10-42.
By default, the provides() method is handled by the ProviderDescriptor
inner class of DragDropListenerService , which extends Service.
ProviderDescriptor . The configuration is loaded from the extension-point
contribution for the provider, as discussed next.
DragDropListenerProvider Extension-Point
Identifier: org.eclipse.gmf.runtime.common.ui.services.dnd.
dragDropListenerProviders