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/******************************************************************************* |
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* Copyright (c) 2012 MEDEVIT and FHV and others. |
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* All rights reserved. This program and the accompanying materials |
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* are made available under the terms of the Eclipse Public License v1.0 |
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* which accompanies this distribution, and is available at |
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* http://www.eclipse.org/legal/epl-v10.html |
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* |
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* Contributors: |
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* Marco Descher <marco@descher.at> - initial API and implementation |
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******************************************************************************/ |
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package org.eclipse.e4.tools.emf.ui.internal; |
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import java.io.File; |
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import java.io.IOException; |
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import java.net.URISyntaxException; |
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import org.eclipse.core.runtime.URIUtil; |
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import org.eclipse.jface.dialogs.DialogSettings; |
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import org.eclipse.jface.dialogs.IDialogSettings; |
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import org.eclipse.osgi.service.datalocation.Location; |
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import org.osgi.framework.BundleActivator; |
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import org.osgi.framework.BundleContext; |
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import org.osgi.framework.Filter; |
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import org.osgi.framework.InvalidSyntaxException; |
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import org.osgi.util.tracker.ServiceTracker; |
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public class ToolsEmfUiPlugin implements BundleActivator { |
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// The plug-in ID |
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public static final String PLUGIN_ID = "org.eclipse.e4.tools.emf.ui"; //$NON-NLS-1$ |
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private static ToolsEmfUiPlugin plugin; |
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private BundleContext context; |
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private ServiceTracker locationTracker; |
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public void start(BundleContext context) throws Exception { |
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plugin = this; |
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this.context = context; |
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} |
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public void stop(BundleContext context) throws Exception { |
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saveDialogSettings(); |
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plugin = null; |
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} |
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/** |
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* Returns the shared instance |
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* |
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* @return the shared instance |
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*/ |
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public static ToolsEmfUiPlugin getDefault() { |
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return plugin; |
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} |
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/** |
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* @return the instance Location service |
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*/ |
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private Location getInstanceLocation() { |
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if (locationTracker == null) { |
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Filter filter = null; |
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try { |
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filter = context.createFilter(Location.INSTANCE_FILTER); |
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} catch (InvalidSyntaxException e) { |
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// ignore this. It should never happen as we have tested the |
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// above format. |
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} |
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locationTracker = new ServiceTracker(context, filter, null); |
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locationTracker.open(); |
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} |
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return (Location) locationTracker.getService(); |
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} |
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private void loadDialogSettings() { |
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dialogSettings = new DialogSettings(PLUGIN_ID); |
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File dialogSettingsFile = getDialogSettingsFile(); |
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if (dialogSettingsFile.exists()) { |
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try { |
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dialogSettings.load(dialogSettingsFile.getAbsolutePath()); |
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} catch (IOException e) { |
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// load failed spec'ed to ignore problems |
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} |
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return; |
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} |
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} |
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private void saveDialogSettings() { |
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if (dialogSettings == null) { |
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return; |
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} |
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File dialogSettingsFile = getDialogSettingsFile(); |
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|
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try { |
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dialogSettings.save(dialogSettingsFile.getAbsolutePath()); |
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} catch (IOException e) { |
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e.printStackTrace(); |
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// spec'ed to ignore problems |
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} |
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} |
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private File getDialogSettingsFile() { |
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File baseLocation; |
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try { |
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baseLocation = new File(URIUtil.toURI(getInstanceLocation().getURL())); |
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} catch (URISyntaxException e) { |
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throw new RuntimeException(e); |
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} |
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baseLocation = new File(baseLocation, ".metadata"); //$NON-NLS-1$ |
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baseLocation = new File(baseLocation, ".plugins"); //$NON-NLS-1$ |
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baseLocation = new File(baseLocation, PLUGIN_ID); |
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File dialogSettingsFile = new File(baseLocation, FN_DIALOG_SETTINGS); |
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if (!dialogSettingsFile.exists()) |
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dialogSettingsFile.getParentFile().mkdirs(); |
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return dialogSettingsFile; |
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} |
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|
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// ////////////////////////////////////////////////////////////////////// |
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// The following code was copied from AbstractUIPlugin class. |
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/** |
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* The name of the dialog settings file (value |
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* <code>"dialog_settings.xml"</code>). |
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*/ |
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private static final String FN_DIALOG_SETTINGS = "dialog_settings.xml"; //$NON-NLS-1$ |
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/** |
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* Storage for dialog and wizard data; <code>null</code> if not yet |
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* initialized. |
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*/ |
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private IDialogSettings dialogSettings = null; |
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/** |
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* @see AbstractUiPlugin#getDialogSettings() |
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* @return the dialog settings |
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*/ |
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public IDialogSettings getDialogSettings() { |
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if (dialogSettings == null) { |
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loadDialogSettings(); |
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} |
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return dialogSettings; |
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} |
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|
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} |
