Java tutorial
/******************************************************************************* * Copyright (c) 2008, 2011 Obeo. * 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: * Obeo - initial API and implementation *******************************************************************************/ package org.eclipse.emf.eef.runtime.ui.editors.pages; import org.eclipse.core.runtime.IAdaptable; import org.eclipse.emf.common.notify.AdapterFactory; import org.eclipse.emf.ecore.EObject; import org.eclipse.emf.edit.domain.EditingDomain; import org.eclipse.emf.eef.runtime.api.component.IPropertiesEditionComponent; import org.eclipse.emf.eef.runtime.api.notify.IPropertiesEditionEvent; import org.eclipse.emf.eef.runtime.api.notify.IPropertiesEditionListener; import org.eclipse.emf.eef.runtime.context.impl.DomainPropertiesEditionContext; import org.eclipse.emf.eef.runtime.impl.notify.PropertiesEditionEvent; import org.eclipse.emf.eef.runtime.ui.editor.InteractiveEEFEditor; import org.eclipse.emf.eef.runtime.ui.layout.EEFFormLayoutFactory; import org.eclipse.emf.eef.runtime.ui.viewers.PropertiesEditionContentProvider; import org.eclipse.emf.eef.runtime.ui.viewers.PropertiesEditionMessageManager; import org.eclipse.emf.eef.runtime.ui.viewers.PropertiesEditionViewer; import org.eclipse.jface.dialogs.IMessageProvider; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.swt.SWT; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.ui.forms.AbstractFormPart; import org.eclipse.ui.forms.IDetailsPage; import org.eclipse.ui.forms.IFormPart; import org.eclipse.ui.forms.widgets.FormToolkit; /** * @author <a href="mailto:goulwen.lefur@obeo.fr">Goulwen Le Fur</a> */ public class EEFDetailsPage extends AbstractFormPart implements IDetailsPage, IPropertiesEditionListener { private FormToolkit toolkit; private EditingDomain editingDomain; protected EObject eObject; protected IPropertiesEditionComponent propertiesEditionComponent; /** * Manager for error message */ private PropertiesEditionMessageManager messageManager; protected PropertiesEditionViewer viewer; private AdapterFactory adapterFactory; public EEFDetailsPage(FormToolkit toolkit, EditingDomain editingDomain, AdapterFactory adapterFactory) { super(); this.toolkit = toolkit; this.editingDomain = editingDomain; this.adapterFactory = adapterFactory; } public void createContents(Composite parent) { toolkit = getManagedForm().getToolkit(); parent.setLayout(EEFFormLayoutFactory.createDetailsGridLayout(false, 1)); parent.setLayoutData(new GridData(GridData.FILL_BOTH)); Composite container = toolkit.createComposite(parent, SWT.FLAT); GridLayout containerLayout = new GridLayout(); container.setLayout(containerLayout); container.setLayoutData(new GridData(GridData.FILL_BOTH)); messageManager = new PropertiesEditionMessageManager() { @Override protected void updateStatus(String message) { if (message != null && !"".equals(message)) getManagedForm().getForm().setMessage(message, IMessageProvider.ERROR); else getManagedForm().getForm().setMessage(null, IMessageProvider.NONE); } }; this.viewer = new PropertiesEditionViewer(container, null, SWT.NONE, 1); viewer.setDynamicTabHeader(true); viewer.setToolkit(getManagedForm().getToolkit()); viewer.setContentProvider(new PropertiesEditionContentProvider(adapterFactory, IPropertiesEditionComponent.LIVE_MODE, editingDomain)); viewer.addPropertiesListener(this); } public void selectionChanged(IFormPart part, ISelection selection) { if (!(selection instanceof IStructuredSelection)) { return; } EObject newEObject = getEObjectFromSelection(selection); if (newEObject != null && newEObject != eObject) { eObject = newEObject; if (eObject != null) { if (viewer.getToolkit() == null) viewer.setToolkit(toolkit); viewer.setInput( new DomainPropertiesEditionContext(null, null, editingDomain, adapterFactory, eObject)); viewer.addPropertiesListener(this); } } } private EObject getEObjectFromSelection(ISelection selection) { if (selection instanceof StructuredSelection && (((StructuredSelection) selection).getFirstElement() instanceof EObject)) return (EObject) ((StructuredSelection) selection).getFirstElement(); if (selection instanceof EObject) return (EObject) selection; if (selection instanceof IAdaptable && ((IAdaptable) selection).getAdapter(EObject.class) != null) return (EObject) ((IAdaptable) selection).getAdapter(EObject.class); return null; } /** * @return the viewer */ public PropertiesEditionViewer getViewer() { return viewer; } public void firePropertiesChanged(IPropertiesEditionEvent event) { handleChange(event); if (event.getState() == PropertiesEditionEvent.FOCUS_CHANGED && event.getKind() == PropertiesEditionEvent.FOCUS_GAINED) { // de-activate global actions if (getEditor() instanceof InteractiveEEFEditor) { ((InteractiveEEFEditor) getEditor()).deactivateCCPActions(); } } else if (event.getState() == PropertiesEditionEvent.FOCUS_CHANGED && event.getKind() == PropertiesEditionEvent.FOCUS_LOST) { // re-activate global actions if (getEditor() instanceof InteractiveEEFEditor) { ((InteractiveEEFEditor) getEditor()).activateCCPActions(); } } } private void handleChange(IPropertiesEditionEvent event) { // do not handle changes if you are in initialization. if (viewer.isInitializing()) return; messageManager.processMessage(event); } /** * Retrieve the Editor from the form. * * @return The eef editor used to display this page. */ private Object getEditor() { if (getManagedForm().getContainer() instanceof AbstractEEFMDFormPage) return ((AbstractEEFMDFormPage) getManagedForm().getContainer()).getEditor(); return null; } }