extra/org.eclipse.emf.ecp.application.e4/src/org/eclipse/emf/ecp/e4/editor/ECPE4Editor.java

package org.eclipse.emf.ecp.e4.editor;

import java.net.URL;

import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import javax.inject.Inject;
import javax.inject.Named;

import org.eclipse.e4.core.di.annotations.Optional;
import org.eclipse.e4.ui.di.Focus;
import org.eclipse.e4.ui.model.application.ui.basic.MPart;
import org.eclipse.e4.ui.services.IServiceConstants;
import org.eclipse.emf.common.notify.Adapter;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.notify.impl.AdapterImpl;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecp.core.ECPProject;
import org.eclipse.emf.ecp.core.util.ECPUtil;
import org.eclipse.emf.ecp.edit.ECPEditorContext;
import org.eclipse.emf.ecp.editor.EditorFactory;
import org.eclipse.emf.ecp.editor.IEditorCompositeProvider;
import org.eclipse.emf.ecp.explorereditorbridge.internal.EditorContext;
import org.eclipse.emf.ecp.internal.ui.view.emf.AdapterFactoryLabelProvider;
import org.eclipse.emf.ecp.spi.core.InternalProvider;
import org.eclipse.emf.ecp.spi.ui.UIProvider;
import org.eclipse.emf.edit.provider.IItemLabelProvider;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.ScrolledComposite;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;

public class ECPE4Editor {

	public static final java.lang.String INPUT = "ecpEditorInput";
	private MPart part;
	private EObject modelElement;
	private Adapter adapter;
	private Composite composite;
	private ScrolledComposite sc;

	@Inject
	public ECPE4Editor(Composite composite) {
		this.composite = composite;
		sc = new ScrolledComposite(composite, SWT.V_SCROLL
				| SWT.H_SCROLL);
	}

	@Inject
	public void setInput(@Optional
			@Named(INPUT) EObject modelElement, @Optional ECPProject ecpProject, MPart part) {
		if(modelElement==null||ecpProject==null){
			return;
		}
		this.part=part;
		this.modelElement=modelElement;
		ECPEditorContext editorContext = new EditorContext(modelElement,
				ecpProject, composite.getShell());
		IEditorCompositeProvider editorPageContent = EditorFactory.INSTANCE
				.getEditorComposite(editorContext);
		

		Composite createUI = editorPageContent.createUI(sc);
		sc.setExpandHorizontal(true);
		sc.setExpandVertical(true);
		sc.setContent(createUI);
		sc.setMinSize(createUI.computeSize(SWT.DEFAULT, SWT.DEFAULT));

//		composite.layout();
		
		updateImageAndText();
		adapter = new AdapterImpl(){

			/* (non-Javadoc)
			 * @see org.eclipse.emf.common.notify.impl.AdapterImpl#notifyChanged(org.eclipse.emf.common.notify.Notification)
			 */
			@Override
			public void notifyChanged(Notification msg) {
				Display.getDefault().asyncExec(new Runnable() {
					public void run() {
						updateImageAndText();
					}
				});
			}
			
		};
		modelElement.eAdapters().add(adapter); 		
	}
	
	@PreDestroy
	void dispose(){
		modelElement.eAdapters().remove(adapter);
	}

	private void updateImageAndText() {
		part.setLabel(UIProvider.EMF_LABEL_PROVIDER.getText(modelElement));
	    part.setTooltip(UIProvider.EMF_LABEL_PROVIDER.getText(modelElement));

	    AdapterFactoryLabelProvider provider = new AdapterFactoryLabelProvider(InternalProvider.EMF_ADAPTER_FACTORY);
	    IItemLabelProvider itemLabelProvider = (IItemLabelProvider)provider.getAdapterFactory().adapt(modelElement, IItemLabelProvider.class);
	    
	    URL url = (URL) itemLabelProvider.getImage(modelElement);

	}
	
	@Focus
	void setFocus(){
		if(sc!=null){
			sc.setFocus();
		}
	}
}