net.sf.eclipsensis.update.EclipseNSISUpdatePlugin.java Source code

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Here is the source code for net.sf.eclipsensis.update.EclipseNSISUpdatePlugin.java

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/*******************************************************************************
 * Copyright (c) 2005-2010 Sunil Kamath (IcemanK).
 * All rights reserved.
 * This program is made available under the terms of the Common Public License
 * v1.0 which is available at http://www.eclipse.org/legal/cpl-v10.html
 *
 * Contributors:
 *     Sunil Kamath (IcemanK) - initial API and implementation
 *******************************************************************************/
package net.sf.eclipsensis.update;

import java.io.File;
import java.text.MessageFormat;
import java.util.*;

import net.sf.eclipsensis.update.preferences.IUpdatePreferenceConstants;
import net.sf.eclipsensis.update.scheduler.Scheduler;

import org.eclipse.core.runtime.*;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.osgi.framework.BundleContext;

/**
 * The main plugin class to be used in the desktop.
 */
public class EclipseNSISUpdatePlugin extends AbstractUIPlugin {
    public static final String RESOURCE_BUNDLE = "net.sf.eclipsensis.update.EclipseNSISUpdatePluginResources"; //$NON-NLS-1$
    public static final String PLUGIN_CONTEXT_PREFIX = "net.sf.eclipsensis."; //$NON-NLS-1$

    //The shared instance.
    private static EclipseNSISUpdatePlugin cPlugin;
    private static File cStateLocation = null;
    private static Image cShellImage;

    //Resource bundle.
    private ResourceBundle mResourceBundle;
    private String mPluginId;

    /**
     * The constructor.
     */
    public EclipseNSISUpdatePlugin() {
        cPlugin = this;
        try {
            mResourceBundle = ResourceBundle.getBundle(RESOURCE_BUNDLE);
        } catch (MissingResourceException mre) {
            mResourceBundle = null;
        }
    }

    public static synchronized File getPluginStateLocation() {
        if (cStateLocation == null) {
            EclipseNSISUpdatePlugin plugin = getDefault();
            if (plugin != null) {
                cStateLocation = plugin.getStateLocation().toFile();
            }
        }
        return cStateLocation;
    }

    @Override
    public void start(BundleContext context) throws Exception {
        mPluginId = context.getBundle().getSymbolicName();
        super.start(context);
        migratePreferences();
    }

    private void migratePreferences() {
        IPreferenceStore prefs = getPreferenceStore();
        int pluginPrefsVersion = prefs.getInt(IUpdatePreferenceConstants.PLUGIN_PREFERENCES_VERSION);
        if (IUpdatePreferenceConstants.PLUGIN_PREFERENCES_VERSION_NUMBER > pluginPrefsVersion) {
            prefs.setValue(IUpdatePreferenceConstants.DAILY_TIME,
                    3600 * prefs.getInt(IUpdatePreferenceConstants.DAILY_TIME));
            prefs.setValue(IUpdatePreferenceConstants.WEEKLY_TIME,
                    3600 * prefs.getInt(IUpdatePreferenceConstants.WEEKLY_TIME));
            prefs.setValue(IUpdatePreferenceConstants.MONTHLY_TIME,
                    3600 * prefs.getInt(IUpdatePreferenceConstants.MONTHLY_TIME));
            prefs.setValue(IUpdatePreferenceConstants.PLUGIN_PREFERENCES_VERSION,
                    IUpdatePreferenceConstants.PLUGIN_PREFERENCES_VERSION_NUMBER);
        }
    }

    /**
     * This method is called when the plug-in is stopped
     */
    @Override
    public void stop(BundleContext context) throws Exception {
        Scheduler scheduler = Scheduler.getInstance();
        if (scheduler != null) {
            scheduler.shutDown();
        }
        super.stop(context);
        cPlugin = null;
    }

    /**
     * Returns the shared instance.
     *
     * @return the shared instance.
     */
    public static EclipseNSISUpdatePlugin getDefault() {
        return cPlugin;
    }

    public static String getFormattedString(String key, Object[] args) {
        return MessageFormat.format(getResourceString(key), args);
    }

    public static String getResourceString(String key) {
        return getResourceString(key, key);
    }

    public static String getResourceString(String key, String defaultValue) {
        ResourceBundle bundle = getDefault().getResourceBundle();
        try {
            return (bundle != null) ? bundle.getString(key) : key;
        } catch (MissingResourceException e) {
            return defaultValue;
        }
    }

    /**
     * Returns the plugin's resource bundle,
     */
    public ResourceBundle getResourceBundle() {
        return mResourceBundle;
    }

    public void log(Throwable t) {
        log(IStatus.ERROR, t);
    }

    public void log(int type, Throwable t) {
        ILog log = getLog();
        if (log != null) {
            IStatus status;
            if (t instanceof CoreException) {
                status = ((CoreException) t).getStatus();
            } else {
                String message = t.getMessage();
                status = new Status(type, getPluginId(), type, message == null ? t.getClass().getName() : message,
                        t);
            }
            log.log(status);
        } else {
            t.printStackTrace();
        }
    }

    public String getPluginId() {
        return mPluginId;
    }

    public static Image getShellImage() {
        if (cShellImage == null) {
            Display.getDefault().syncExec(new Runnable() {
                public void run() {
                    cShellImage = getImageDescriptor(getResourceString("update.icon")) //$NON-NLS-1$
                            .createImage(Display.getCurrent());
                }
            });
        }
        return cShellImage;
    }

    /**
     * Returns an image descriptor for the image file at the given
     * plug-in relative path.
     *
     * @param path the path
     * @return the image descriptor
     */
    public static ImageDescriptor getImageDescriptor(String path) {
        return AbstractUIPlugin.imageDescriptorFromPlugin(getDefault().getPluginId(), path);
    }
}