com.google.gdt.eclipse.designer.Activator.java Source code

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Here is the source code for com.google.gdt.eclipse.designer.Activator.java

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/*******************************************************************************
 * Copyright 2011 Google Inc. All Rights Reserved.
 *
 * 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
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *******************************************************************************/
package com.google.gdt.eclipse.designer;

import com.google.common.collect.Lists;
import com.google.gdt.eclipse.designer.common.Constants;
import com.google.gdt.eclipse.designer.launch.GwtLaunchConfigurationConfigurator;

import org.eclipse.wb.internal.core.BundleResourceProvider;
import org.eclipse.wb.internal.core.EnvironmentUtils;
import org.eclipse.wb.internal.core.preferences.PreferenceToSystemForwarder;

import org.eclipse.core.runtime.Platform;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.graphics.Image;
import org.eclipse.ui.IStartup;
import org.eclipse.ui.plugin.AbstractUIPlugin;

import org.apache.commons.collections.CollectionUtils;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleContext;

import java.io.InputStream;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.List;

/**
 * The activator class controls the plug-in life cycle.
 * 
 * @author scheglov_ke
 * @coverage gwt
 */
public class Activator extends AbstractUIPlugin implements Constants, IStartup {
    public static final String PLUGIN_ID = "com.google.gdt.eclipse.designer";
    private static Activator m_plugin;

    ////////////////////////////////////////////////////////////////////////////
    //
    // Life cycle
    //
    ////////////////////////////////////////////////////////////////////////////
    @Override
    public void stop(BundleContext context) throws Exception {
        m_plugin = null;
        super.stop(context);
    }

    @Override
    public void start(BundleContext context) throws Exception {
        super.start(context);
        m_plugin = this;
        // install preference forwarder for WebKit
        // don't follow with Mac
        if (!EnvironmentUtils.IS_MAC) {
            new PreferenceToSystemForwarder(getPreferenceStore(), Constants.P_GWT_USE_WEBKIT,
                    "__wbp.gwt.useWebKit");
        }
    }

    ////////////////////////////////////////////////////////////////////////////
    //
    // Instance access
    //
    ////////////////////////////////////////////////////////////////////////////
    /**
     * @return the shared instance.
     */
    public static Activator getDefault() {
        return m_plugin;
    }

    /**
     * @return this {@link Bundle}, can be used even without starting this plugin.
     */
    private static Bundle getBundleStatic() {
        return Platform.getBundle(PLUGIN_ID);
    }

    /**
     * @return the {@link String} from bundle localization.
     */
    public static String getResourceString(String key) {
        return Platform.getResourceString(getBundleStatic(), key);
    }

    ////////////////////////////////////////////////////////////////////////////
    //
    // Files
    //
    ////////////////////////////////////////////////////////////////////////////
    /**
     * @return array of entry sub-paths in given path.
     */
    @SuppressWarnings("unchecked")
    public static String[] getEntriesPaths(String path) {
        List<String> entryPaths;
        {
            entryPaths = Lists.newArrayList();
            Enumeration<String> entryPathsEnumeration = getBundleStatic().getEntryPaths(path);
            CollectionUtils.addAll(entryPaths, entryPathsEnumeration);
        }
        // remove ".svn" files (for case when we use runtime workbench)
        for (Iterator<String> I = entryPaths.iterator(); I.hasNext();) {
            String entryPath = I.next();
            if (entryPath.indexOf(".svn") != -1) {
                I.remove();
            }
        }
        // convert to array
        return entryPaths.toArray(new String[entryPaths.size()]);
    }

    ////////////////////////////////////////////////////////////////////////////
    //
    // Resources
    //
    ////////////////////////////////////////////////////////////////////////////
    private static final BundleResourceProvider m_resourceProvider = BundleResourceProvider.get(PLUGIN_ID);

    /**
     * @return the {@link InputStream} for file from plugin directory.
     */
    public static InputStream getFile(String path) {
        return m_resourceProvider.getFile(path);
    }

    /**
     * @return the {@link Image} from "icons" directory, with caching.
     */
    public static Image getImage(String path) {
        return m_resourceProvider.getImage("icons/" + path);
    }

    /**
     * @return the {@link ImageDescriptor} from "icons" directory.
     */
    public static ImageDescriptor getImageDescriptor(String path) {
        return m_resourceProvider.getImageDescriptor("icons/" + path);
    }

    ////////////////////////////////////////////////////////////////////////////
    //
    // Preferences
    //
    ////////////////////////////////////////////////////////////////////////////
    /**
     * Returns preference store for GWT plugin.
     */
    public static IPreferenceStore getStore() {
        return m_plugin.getPreferenceStore();
    }

    /**
     * Returns location of GWT installation directory.
     */
    public static String getGWTLocation() {
        return getStore().getString(P_GWT_LOCATION);
    }

    /**
     * Sets location of GWT installation directory.
     */
    public static void setGWTLocation(String location) {
        getStore().setValue(P_GWT_LOCATION, location);
    }

    ////////////////////////////////////////////////////////////////////////////
    //
    // IStartup
    //
    ////////////////////////////////////////////////////////////////////////////
    public void earlyStartup() {
        new GwtLaunchConfigurationConfigurator();
        WarmUpSupport.doWarmUp();
    }
}