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/*******************************************************************************
* Copyright (c) 2012 Rushan R. Gilmullin and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Rushan R. Gilmullin - initial API and implementation
*******************************************************************************/
package org.eclipse.osbp.vaaclipse.emf.parts;
import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import javax.inject.Inject;
import javax.inject.Named;
import org.eclipse.e4.core.contexts.Active;
import org.eclipse.e4.core.contexts.IEclipseContext;
import org.eclipse.e4.core.di.annotations.Execute;
import org.eclipse.e4.core.di.annotations.Optional;
import org.eclipse.e4.core.services.events.IEventBroker;
import org.eclipse.e4.ui.model.application.ui.advanced.MPerspective;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.osbp.runtime.designer.api.IWidgetDesignConfigurator;
import org.eclipse.osbp.runtime.web.vaadin.common.resource.IResourceProvider;
import org.eclipse.osbp.vaaclipse.emf.api.view.IConstants;
import org.eclipse.osbp.vaaclipse.publicapi.events.IWidgetModelAssociations;
import org.eclipse.osbp.vaadin.emf.actions.EObjectActionHandler;
import org.eclipse.osbp.vaadin.emf.actions.EObjectActionHandler.EditCallback;
import org.eclipse.osbp.vaadin.emf.api.EmfModelElementClickEvent;
import org.eclipse.osbp.vaadin.emf.api.IModelingConstants;
import org.eclipse.osbp.vaadin.emf.api.IModelingContext;
import org.eclipse.osbp.vaadin.emf.views.EmfModelTreeViewer;
import org.osgi.service.event.Event;
import org.osgi.service.event.EventHandler;
import com.vaadin.ui.VerticalLayout;
/**
* A tree viewer which can show any EMF Model.
*/
public class EmfModelTreePart {
public final static String EVENT_TYPE_NAME = "eventType";
@Inject
private IModelingContext modelingContext;
@Inject
private IEventBroker eventBroker;
@Inject
private IEclipseContext context;
@Inject
private IResourceProvider resourceProvider;
@Inject
private VerticalLayout parent;
// @Inject
// private IOpenModelEditDialogService dialogOpener;
@Inject
private IWidgetDesignConfigurator dialogOpener;
@Inject
private IWidgetModelAssociations associations;
private EmfModelTreeViewer viewer;
private EventHandler selectedEObject;
/**
* Locks selections
*/
private boolean locked = false;
private EditCallback editCallback;
public EmfModelTreePart() {
}
@PostConstruct
protected void setup() {
// opens a dialog to edit a model element
editCallback = new EObjectActionHandler.EditCallback() {
@Override
public void edit(EObject model) {
// dialogOpener.openEditDialog(model,
// context);
dialogOpener.openEditDialog(associations.getWidget(model),
model);
}
};
viewer = new EmfModelTreeViewer(modelingContext, resourceProvider,
editCallback);
viewer.setSizeFull();
parent.addComponent(viewer);
viewer.addItemClickListener(e -> {
eventBroker.send(IConstants.TOPIC__TREE_SELECTION_OUT,
e.getItemId());
});
selectedEObject = new EventHandler() {
@Override
public void handleEvent(Event event) {
if (locked) {
return;
}
Object data = event.getProperty(IEventBroker.DATA);
if (data instanceof EmfModelElementClickEvent) {
EmfModelElementClickEvent clickData = (EmfModelElementClickEvent) data;
viewer.setRootElement((EObject) clickData.getModelElement());
viewer.expand(viewer.getRootElement());
viewer.setSelection(viewer.getRootElement());
} else {
EObject eObject = (EObject) event
.getProperty(IEventBroker.DATA);
viewer.setRootElement(eObject);
viewer.expand(viewer.getRootElement());
viewer.setSelection(viewer.getRootElement());
}
}
};
eventBroker.subscribe(IModelingConstants.TOPIC__ELEMENT_CLICKED,
selectedEObject);
}
@Inject
protected void activePerspective(@Optional @Active MPerspective mPerspective) {
// if (viewer != null) {
// EObject root = EcoreUtil
// .getRootContainer((EObject) mPerspective);
// viewer.setRootElement(root);
// viewer.expand(root);
// }
}
@Execute
protected void executeEvent(@Named(EVENT_TYPE_NAME) EventType type) {
if (type == EventType.PREVIOUS) {
EObject root = viewer.getRootElement();
if (root != null) {
EObject newRoot = root.eContainer();
if (newRoot != null) {
EObject selection = viewer.getSelection();
viewer.setRootElement(newRoot);
if (selection != null) {
viewer.expand(selection);
viewer.setSelection(selection);
}
}
}
} else if (type == EventType.LOCK) {
locked = !locked;
}
}
@PreDestroy
protected void destroy() {
eventBroker.unsubscribe(selectedEObject);
selectedEObject = null;
// clear all caches in the viewer
viewer.setRootElement(null);
viewer.dispose();
viewer = null;
}
public enum EventType {
/**
* show previous EObject
*/
PREVIOUS,
/**
* Locks the selection
*/
LOCK
}
}