src/plugins/installer/src/com/motorola/studio/android/installer/InstallerPlugin.java

/*
 * Copyright (C) 2012 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * 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.motorola.studio.android.installer;

import java.util.Hashtable;
import java.util.LinkedHashMap;
import java.util.Map;

import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtension;
import org.eclipse.core.runtime.IExtensionPoint;
import org.eclipse.core.runtime.IExtensionRegistry;
import org.eclipse.core.runtime.Platform;
import org.eclipse.equinox.p2.ui.Policy;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.osgi.framework.BundleContext;

import com.motorola.studio.android.installer.policy.MotodevPolicy;

public class InstallerPlugin extends AbstractUIPlugin
{

    private static InstallerPlugin plugin;

    public static final String PLUGIN_ID = "com.motorola.studio.android.installer"; //$NON-NLS-1$

    private static final String CONTRIBUTED_PAGE_EXTENSION_POINT_ID = PLUGIN_ID + ".configuration"; //$NON-NLS-1$

    private static final String CONTRIBUTED_PAGE_EXTENSION_ELEMENT = "page"; //$NON-NLS-1$

    public static final String CONTRIBUTED_PAGE_EXTENSION_PAGENAME = "name"; //$NON-NLS-1$

    public static final String CONTRIBUTED_PAGE_EXTENSION_PAGEDESCRIPTION = "description"; //$NON-NLS-1$

    public static final String CONTRIBUTED_PAGE_EXTENSION_PAGEID = "id"; //$NON-NLS-1$

    public static final String CONTRIBUTED_PAGE_EXTENSION_PAGECLASS = "class"; //$NON-NLS-1$

    public static final String DEFAULT_P2_PROFILE_NAME = "MOTODEV_Profile_Android"; //$NON-NLS-1$

    /*
     * (non-Javadoc)
     * @see org.eclipse.ui.plugin.AbstractUIPlugin#start(org.osgi.framework.BundleContext)
     */
    @Override
    public void start(BundleContext context) throws Exception
    {
        super.start(context);
        plugin = this;
        if (canRegisterPolicy())
        {
            Hashtable<String, Object> serviceProperties = new Hashtable<String, Object>();
            serviceProperties.put("service.ranking", new Integer(1500));
            context.registerService(Policy.class.getName(), new MotodevPolicy(), serviceProperties);
        }
    }

    private boolean canRegisterPolicy()
    {
        return "com.motorola.studio.android.product.android".equals(Platform.getProduct().getId());
    }

    /**
     * Return the BundleContext for this bundle.
     * 
     * @return BundleContext
     */
    public static BundleContext getContext()
    {
        return plugin.getBundle().getBundleContext();
    }

    /**
     * Return the plugin instance.
     * 
     * @return the plugin instance
     */
    public static InstallerPlugin getDefault()
    {
        return plugin;
    }

    /**
     * Retrieve the map of configuration elements of contribution pages
     * @return the elements of contribution pages, where the Key is the id of the page declared on extension
     */
    public static Map<String, IConfigurationElement> loadContributedPages()
    {
        Map<String, IConfigurationElement> pages =
                new LinkedHashMap<String, IConfigurationElement>();
        IExtensionRegistry registry = Platform.getExtensionRegistry();
        if (registry != null)
        {
            IExtensionPoint extensionPoint =
                    registry.getExtensionPoint(CONTRIBUTED_PAGE_EXTENSION_POINT_ID);
            for (IExtension extension : extensionPoint.getExtensions())
            {
                for (IConfigurationElement configElement : extension.getConfigurationElements())
                {
                    if (configElement.getName().equals(CONTRIBUTED_PAGE_EXTENSION_ELEMENT))
                    {
                        pages.put(configElement.getAttribute(CONTRIBUTED_PAGE_EXTENSION_PAGEID),
                                configElement);
                    }
                }
            }
        }

        return pages;
    }
}