Java tutorial
/******************************************************************************* * Copyright (c) 2013, 2016 Obeo 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: * Obeo - initial API and implementation * Stefan Dirix - bug 473985 *******************************************************************************/ package org.eclipse.emf.compare.ide.ui.internal.structuremergeviewer.actions; import static com.google.common.collect.Maps.newHashMap; import com.google.common.collect.ImmutableList; import java.io.File; import java.io.IOException; import java.io.NotSerializableException; import org.eclipse.core.resources.IFile; import org.eclipse.core.resources.IResource; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.NullProgressMonitor; import org.eclipse.core.runtime.Path; import org.eclipse.core.runtime.Status; import org.eclipse.emf.common.util.URI; import org.eclipse.emf.compare.Comparison; import org.eclipse.emf.compare.ide.ui.internal.EMFCompareIDEUIMessages; import org.eclipse.emf.compare.ide.ui.internal.EMFCompareIDEUIPlugin; import org.eclipse.emf.compare.rcp.ui.internal.configuration.IEMFCompareConfiguration; import org.eclipse.emf.ecore.EObject; import org.eclipse.emf.ecore.resource.Resource; import org.eclipse.emf.ecore.util.EcoreUtil.Copier; import org.eclipse.emf.ecore.xmi.impl.XMIResourceImpl; import org.eclipse.jface.action.Action; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.FileDialog; import org.eclipse.swt.widgets.Shell; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.plugin.AbstractUIPlugin; import org.eclipse.ui.statushandlers.StatusAdapter; import org.eclipse.ui.statushandlers.StatusManager; /** * Action that manages the save of the comparison model. * * @author <a href="mailto:axel.richard@obeo.fr">Axel Richard</a> * @since 3.0 */ public class SaveComparisonModelAction extends Action { /** The dialog buttons. */ private static final ImmutableList<String> DIALOG_BUTTON_LABELS = ImmutableList.of("Replace", "Cancel"); /** The compare configuration object used to get the compare model. */ private IEMFCompareConfiguration configuration; /** * Constructor. * * @param configuration * The compare configuration object. */ public SaveComparisonModelAction(IEMFCompareConfiguration configuration) { this.configuration = configuration; setToolTipText(EMFCompareIDEUIMessages.getString("save.model.tooltip")); //$NON-NLS-1$ setImageDescriptor(AbstractUIPlugin.imageDescriptorFromPlugin(EMFCompareIDEUIPlugin.PLUGIN_ID, "icons/full/toolb16/saveas_edit.gif")); //$NON-NLS-1$ } /** * {@inheritDoc} * * @see org.eclipse.jface.action.Action#run() */ @Override public void run() { Shell parent = getShell(); FileDialog fileDialog = new FileDialog(parent, SWT.SAVE); String filePath = fileDialog.open(); if (filePath != null) { File file = new File(filePath); if (file.exists()) { MessageDialog messageDialog = new MessageDialog(parent, "File already exists", null, "File \"" + file.toString() + "\" already exists. Do you want to replace the existing one?", MessageDialog.WARNING, DIALOG_BUTTON_LABELS.toArray(new String[DIALOG_BUTTON_LABELS.size()]), 1); int open = messageDialog.open(); if (open == DIALOG_BUTTON_LABELS.indexOf("Replace")) { saveComparison(file); refreshLocation(filePath); } // else do nothing } else { saveComparison(file); refreshLocation(filePath); } } super.run(); } /** * Returns the active shell from the workbench (if running) or the default display. * * @return The active shell. */ private Shell getShell() { if (PlatformUI.isWorkbenchRunning()) { return PlatformUI.getWorkbench().getDisplay().getActiveShell(); } return Display.getDefault().getActiveShell(); } /** * {@inheritDoc} * * @see org.eclipse.jface.action.Action#isEnabled() */ @Override public boolean isEnabled() { return configuration.isLeftEditable() && configuration.isRightEditable(); } /** * Save the compare model in the given result {@link File}. * * @param file * the result {@link File}. */ private void saveComparison(File file) { Comparison comparison = configuration.getComparison(); Resource resource = new XMIResourceImpl(URI.createFileURI(file.getAbsolutePath())); Copier copier = new Copier(false); EObject comparisonCopy = copier.copy(comparison); copier.copyReferences(); resource.getContents().add(comparisonCopy); try { resource.save(newHashMap()); } catch (RuntimeException e) { if (e.getCause() instanceof NotSerializableException) { final Status status = new Status(IStatus.ERROR, EMFCompareIDEUIPlugin.PLUGIN_ID, EMFCompareIDEUIMessages.getString("resource.not.serializable"), e); //$NON-NLS-1$ StatusManager.getManager().handle(new StatusAdapter(status), StatusManager.SHOW); } else { EMFCompareIDEUIPlugin.getDefault().log(e); } } catch (IOException e) { EMFCompareIDEUIPlugin.getDefault().log(e); } } /** * Refresh the folder containing the given path. * * @param path * the given path. */ private void refreshLocation(String path) { try { IFile fileForLocation = ResourcesPlugin.getWorkspace().getRoot().getFileForLocation(new Path(path)); if (fileForLocation != null) { fileForLocation.getParent().refreshLocal(IResource.DEPTH_INFINITE, new NullProgressMonitor()); } } catch (CoreException e) { EMFCompareIDEUIPlugin.getDefault().log(e); } } }