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/*****************************************************************************
* Copyright (c) 2011 CEA LIST.
*
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Vincent Lorenzo (CEA LIST) vincent.lorenzo@cea.fr - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.infra.ui.editorsfactory;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.papyrus.infra.core.services.ServiceException;
import org.eclipse.papyrus.infra.emf.utils.ServiceUtilsForEObject;
/**
*
* An abstract class to get the iconRegistery
*
* @since 1.2
*
*/
public abstract class AbstractGetEditorIconQuery {// we don't need to implements IJavaModelQuery here
/**
* the icon registry
*/
private static IPageIconsRegistry editorRegistry;
/**
* Get the EditorRegistry used to create editor instances. This default
* implementation return the singleton eINSTANCE. This method can be
* subclassed to return another registry.
*
* @return the singleton eINSTANCE of editor registry
*/
protected IPageIconsRegistryExtended getEditorRegistry(EObject context) {
try {
return (IPageIconsRegistryExtended) ServiceUtilsForEObject.getInstance().getService(IPageIconsRegistry.class, context);
} catch (Exception ex) {
// Skip
}
if (editorRegistry == null) {
editorRegistry = createEditorRegistry(context);
}
if (!(editorRegistry instanceof IPageIconsRegistryExtended)) {
throw new RuntimeException("The editor registry do not implement IPageIconsRegistryExtended");////$NON-NLS-1$
}
return (IPageIconsRegistryExtended) editorRegistry;
}
/**
* Return the EditorRegistry for nested editor descriptors. Subclass should
* implements this method in order to return the registry associated to the
* extension point namespace.
*
* @return the EditorRegistry for nested editor descriptors
*/
protected IPageIconsRegistry createEditorRegistry(EObject context) {
try {
return ServiceUtilsForEObject.getInstance().getService(IPageIconsRegistry.class, context);
} catch (ServiceException e) {
// Not found, return an empty one which return null for each
// request.
return new PageIconsRegistry();
}
}
}
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