Java tutorial
/******************************************************************************* * Copyright (c) 2011-2014 EclipseSource Muenchen GmbH and others. * * 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: * Eugen - initial API and implementation ******************************************************************************/ package org.eclipse.emf.ecp.view.template.internal.tooling.controls; import java.io.File; import java.net.MalformedURLException; import org.eclipse.core.databinding.Binding; import org.eclipse.core.databinding.observable.IObserving; import org.eclipse.core.databinding.observable.value.IObservableValue; import org.eclipse.core.resources.IResource; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.emf.common.command.Command; import org.eclipse.emf.ecore.EObject; import org.eclipse.emf.ecore.EStructuralFeature; import org.eclipse.emf.ecp.view.spi.context.ViewModelContext; import org.eclipse.emf.ecp.view.spi.core.swt.SimpleControlSWTControlSWTRenderer; import org.eclipse.emf.ecp.view.spi.model.VControl; import org.eclipse.emf.ecp.view.template.internal.tooling.Activator; import org.eclipse.emf.ecp.view.template.internal.tooling.Messages; import org.eclipse.emf.ecp.view.template.model.VTViewTemplateProvider; import org.eclipse.emf.edit.command.SetCommand; import org.eclipse.emf.edit.domain.EditingDomain; import org.eclipse.emfforms.spi.common.report.ReportService; import org.eclipse.emfforms.spi.core.services.databinding.DatabindingFailedException; import org.eclipse.emfforms.spi.core.services.databinding.DatabindingFailedReport; import org.eclipse.emfforms.spi.core.services.databinding.EMFFormsDatabinding; import org.eclipse.emfforms.spi.core.services.label.EMFFormsLabelProvider; import org.eclipse.jface.databinding.swt.WidgetProperties; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.layout.GridLayoutFactory; import org.eclipse.jface.viewers.ILabelProvider; import org.eclipse.jface.viewers.ITreeContentProvider; import org.eclipse.jface.window.Window; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.FileDialog; import org.eclipse.swt.widgets.Label; import org.eclipse.ui.dialogs.ElementTreeSelectionDialog; import org.eclipse.ui.model.WorkbenchContentProvider; import org.eclipse.ui.model.WorkbenchLabelProvider; import org.osgi.framework.BundleContext; import org.osgi.framework.FrameworkUtil; import org.osgi.framework.ServiceReference; /** * Control for selecting a file and saving the path as url. * * @author Eugen Neufeld * */ public class URLSelectionControlSWTRenderer extends SimpleControlSWTControlSWTRenderer { private static final EMFFormsDatabinding emfFormsDatabinding; private static final EMFFormsLabelProvider emfFormsLabelProvider; private static final VTViewTemplateProvider vtViewTemplateProvider; static { final BundleContext bundleContext = FrameworkUtil.getBundle(URLSelectionControlSWTRenderer.class) .getBundleContext(); final ServiceReference<EMFFormsDatabinding> emfFormsDatabindingServiceReference = bundleContext .getServiceReference(EMFFormsDatabinding.class); emfFormsDatabinding = bundleContext.getService(emfFormsDatabindingServiceReference); final ServiceReference<EMFFormsLabelProvider> emfFormsLabelProviderServiceReference = bundleContext .getServiceReference(EMFFormsLabelProvider.class); emfFormsLabelProvider = bundleContext.getService(emfFormsLabelProviderServiceReference); final ServiceReference<VTViewTemplateProvider> vtViewTemplateProviderServiceReference = bundleContext .getServiceReference(VTViewTemplateProvider.class); vtViewTemplateProvider = bundleContext.getService(vtViewTemplateProviderServiceReference); } /** * Default constructor. * * @param vElement the view model element to be rendered * @param viewContext the view context * @param reportService The {@link ReportService} */ public URLSelectionControlSWTRenderer(VControl vElement, ViewModelContext viewContext, ReportService reportService) { super(vElement, viewContext, reportService, emfFormsDatabinding, emfFormsLabelProvider, vtViewTemplateProvider); } /** * {@inheritDoc} * * @see org.eclipse.emf.ecp.view.spi.core.swt.SimpleControlSWTControlSWTRenderer#createBindings(org.eclipse.swt.widgets.Control, * org.eclipse.emf.ecore.EStructuralFeature.Setting) */ @Override protected Binding[] createBindings(Control control) throws DatabindingFailedException { final Composite composite = Composite.class.cast(control); final Control childControl = composite.getChildren()[0]; final IObservableValue value = WidgetProperties.text().observe(childControl); final Binding binding = getDataBindingContext().bindValue(value, getModelValue()); final IObservableValue toolTip = WidgetProperties.tooltipText().observe(childControl); final Binding tooltipBinding = getDataBindingContext().bindValue(toolTip, getModelValue()); return new Binding[] { binding, tooltipBinding }; } /** * {@inheritDoc} * * @see org.eclipse.emf.ecp.view.spi.core.swt.SimpleControlSWTControlSWTRenderer#createSWTControl(org.eclipse.swt.widgets.Composite) */ @Override protected Control createSWTControl(Composite parent) { final Composite composite = new Composite(parent, SWT.NONE); composite.setBackgroundMode(SWT.INHERIT_FORCE); GridLayoutFactory.fillDefaults().numColumns(3).equalWidth(false).applyTo(composite); final Label label = new Label(composite, SWT.NONE); GridDataFactory.fillDefaults().align(SWT.FILL, SWT.BEGINNING).grab(true, false).applyTo(label); final Button selectExternFileButton = new Button(composite, SWT.PUSH); GridDataFactory.fillDefaults().align(SWT.BEGINNING, SWT.BEGINNING).grab(false, false) .applyTo(selectExternFileButton); selectExternFileButton.setText(Messages.URLSelectionControlSWTRenderer_SelectExternalFileBtn); selectExternFileButton.addSelectionListener(new SelectionAdapter() { /** * {@inheritDoc} * * @see org.eclipse.swt.events.SelectionAdapter#widgetSelected(org.eclipse.swt.events.SelectionEvent) */ @Override public void widgetSelected(SelectionEvent e) { super.widgetSelected(e); // show dialog final FileDialog fd = new FileDialog(composite.getShell(), SWT.OPEN); final String open = fd.open(); if (open == null) { return; } String selectedURL = null; try { selectedURL = new File(open).toURI().toURL().toExternalForm(); } catch (final MalformedURLException ex) { Activator.log(ex); } setValue(selectedURL); } }); final Button selectWorkspaceFileButton = new Button(composite, SWT.PUSH); GridDataFactory.fillDefaults().align(SWT.BEGINNING, SWT.BEGINNING).grab(false, false) .applyTo(selectWorkspaceFileButton); selectWorkspaceFileButton.setText(Messages.URLSelectionControlSWTRenderer_SelectWorkspaceFileBtn); selectWorkspaceFileButton.addSelectionListener(new SelectionAdapter() { /** * {@inheritDoc} * * @see org.eclipse.swt.events.SelectionAdapter#widgetSelected(org.eclipse.swt.events.SelectionEvent) */ @Override public void widgetSelected(SelectionEvent e) { super.widgetSelected(e); final ITreeContentProvider contentProvider = new WorkbenchContentProvider(); final ILabelProvider labelProvider = new WorkbenchLabelProvider(); final ElementTreeSelectionDialog etsd = new ElementTreeSelectionDialog(composite.getShell(), labelProvider, contentProvider); etsd.setInput(ResourcesPlugin.getWorkspace().getRoot()); final int open = etsd.open(); if (Window.CANCEL == open) { return; } final IResource resource = (IResource) etsd.getResult()[0]; final String selectedURL = "platform:/plugin" + resource.getFullPath().toString(); //$NON-NLS-1$ setValue(selectedURL); } }); return composite; } private void setValue(String selectedURL) { IObservableValue observableValue; try { observableValue = Activator.getDefault().getEMFFormsDatabinding().getObservableValue( getVElement().getDomainModelReference(), getViewModelContext().getDomainModel()); } catch (final DatabindingFailedException ex) { Activator.getDefault().getReportService().report(new DatabindingFailedReport(ex)); return; } final EStructuralFeature structuralFeature = (EStructuralFeature) observableValue.getValueType(); final EObject eObject = (EObject) ((IObserving) observableValue).getObserved(); observableValue.dispose(); final EditingDomain editingDomain = getEditingDomain(eObject); final Command command = SetCommand.create(editingDomain, eObject, structuralFeature, selectedURL); editingDomain.getCommandStack().execute(command); } /** * {@inheritDoc} * * @see org.eclipse.emf.ecp.view.spi.core.swt.SimpleControlSWTRenderer#getUnsetText() */ @Override protected String getUnsetText() { return Messages.URLSelectionControlSWTRenderer_UnsetText; } }