SyncModelContext.java

package org.eclipse.uml2.diagram.common.async;

import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.commands.operations.OperationHistoryFactory;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.gmf.runtime.common.core.command.CommandResult;
import org.eclipse.gmf.runtime.common.core.util.StringStatics;
import org.eclipse.gmf.runtime.diagram.core.preferences.PreferencesHint;
import org.eclipse.gmf.runtime.emf.commands.core.command.AbstractTransactionalCommand;
import org.eclipse.uml2.diagram.common.genapi.IDiagramUpdater;
import org.eclipse.uml2.diagram.common.genapi.IVisualIDRegistry;

public class SyncModelContext {

	private static final String SYNC_RESOURCE_TEMP_URI = "uri://temp/" + SyncModelContext.class.getName() + "/temp"; //$NON-NLS-1$ //$NON-NLS-2$

	private final PreferencesHint myPreferencesHint;

	private final IDiagramUpdater myUpdater;

	private final IVisualIDRegistry myRegistry;

	private final TransactionalEditingDomain myDomain;

	private final boolean myIsDiagramInitialization;

	private Resource mySyncModelResource;

	public SyncModelContext(IDiagramUpdater updater, IVisualIDRegistry registry, PreferencesHint preferencesHint, TransactionalEditingDomain domain) {
		this(updater, registry, preferencesHint, domain, false);
	}

	public SyncModelContext(IDiagramUpdater updater, IVisualIDRegistry registry, PreferencesHint preferencesHint, TransactionalEditingDomain domain, boolean isDiagramInit) {
		myUpdater = updater;
		myRegistry = registry;
		myPreferencesHint = preferencesHint;
		myDomain = domain;
		myIsDiagramInitialization = isDiagramInit;
	}

	public PreferencesHint getPreferencesHint() {
		return myPreferencesHint;
	}

	public IDiagramUpdater getUpdater() {
		return myUpdater;
	}

	public IVisualIDRegistry getRegistry() {
		return myRegistry;
	}

	public boolean isDiagramInitialization() {
		return myIsDiagramInitialization;
	}

	public TransactionalEditingDomain getDomain() {
		return myDomain;
	}

	public Resource getSyncModelResource() {
		if (mySyncModelResource == null) {
			URI syncModelURI = URI.createURI(SYNC_RESOURCE_TEMP_URI);
			mySyncModelResource = getResourceSet().createResource(syncModelURI);
			if (mySyncModelResource == null) {
				throw new IllegalStateException("Can't create sync model resource: " + syncModelURI); //$NON-NLS-1$
			}
		}
		return mySyncModelResource;
	}

	public void dispose() {
		if (mySyncModelResource != null) {
			mySyncModelResource.unload();
			getResourceSet().getResources().remove(mySyncModelResource);
			mySyncModelResource = null;
		}
	}

	public void runCommand(AbstractTransactionalCommand command) {
		try {
			//XXX
			OperationHistoryFactory.getOperationHistory().execute(command, new NullProgressMonitor(), null);
		} catch (ExecutionException e) {
			e.printStackTrace();
		}
	}

	public void runCommand(final Runnable command) {
		runCommand(new AbstractTransactionalCommand(myDomain, StringStatics.BLANK, null) {

			@Override
			protected CommandResult doExecuteWithResult(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
				command.run();
				return CommandResult.newOKCommandResult();
			}
		});
	}

	private ResourceSet getResourceSet() {
		return myDomain.getResourceSet();
	}

}