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/*******************************************************************************
* Copyright (c) 2008, 2012 Oracle. 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:
* Oracle - initial API and implementation
******************************************************************************/
package org.eclipse.jpt.jaxb.ui.internal.navigator;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.jpt.common.ui.jface.ItemExtendedLabelProvider;
import org.eclipse.jpt.common.ui.jface.ItemExtendedLabelProviderFactory;
import org.eclipse.jpt.jaxb.core.context.JaxbContextNode;
import org.eclipse.jpt.jaxb.core.platform.JaxbPlatformDescription;
import org.eclipse.jpt.jaxb.ui.JptJaxbUiPlugin;
import org.eclipse.jpt.jaxb.ui.platform.JaxbPlatformUi;
public class JaxbNavigatorItemLabelProviderFactory
implements ItemExtendedLabelProviderFactory {
/**
* Exactly *one* of these factories is created for each view that utilizes it.
* Therefore, as we delegate to the platform UI for each project, we should
* maintain the same multiplicity. That is, if there is a delegate for each
* platform UI, we should maintain *one* delegate for each view.
*
* Key: platform description, Value: delegate content provider factory
*/
private final Map<JaxbPlatformDescription, ItemExtendedLabelProviderFactory> delegates = new HashMap<JaxbPlatformDescription, ItemExtendedLabelProviderFactory>();
public JaxbNavigatorItemLabelProviderFactory() {
super();
}
public ItemExtendedLabelProvider buildProvider(Object item, ItemExtendedLabelProvider.Manager manager) {
ItemExtendedLabelProviderFactory delegate = getDelegate(item);
if (delegate != null) {
return delegate.buildProvider(item, manager);
}
return null;
}
private ItemExtendedLabelProviderFactory getDelegate(Object element) {
if (! (element instanceof IAdaptable)) {
return null;
}
JaxbContextNode contextNode = (JaxbContextNode) ((IAdaptable) element).getAdapter(JaxbContextNode.class);
if (contextNode == null) {
return null;
}
JaxbPlatformDescription platformDesc = contextNode.getJaxbProject().getPlatform().getDescription();
if (delegates.containsKey(platformDesc)) {
return delegates.get(platformDesc);
}
JaxbPlatformUi platformUi = JptJaxbUiPlugin.getJaxbPlatformUiManager().getJaxbPlatformUi(platformDesc);
ItemExtendedLabelProviderFactory delegate =
(platformUi == null) ? null : platformUi.getNavigatorUi().getItemLabelProviderFactory();
delegates.put(platformDesc, delegate);
return delegate;
}
}
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