InstallManager.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.utilities;

import java.net.URI;
import java.util.Collection;
import java.util.List;

import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;

import com.motorola.studio.android.common.log.StudioLogger;
import com.motorola.studio.android.installer.InstallerException;
import com.motorola.studio.android.installer.InstallerPlugin;
import com.motorola.studio.android.installer.i18n.InstallerNLS;

/**
 * Utility methods for downloading and installing updates
 * 
 */
public class InstallManager implements IInstallManager
{

    private static InstallManager instance;

    P2Installer p2Installer = new P2Installer();

    /*
     * This class is a singleton.
     */
    private InstallManager()
    {
        //Do nothing, singleton class.
    }

    /**
     * Returns an instance of the Install Manager
     * @return
     */
    public static synchronized IInstallManager getInstance()
    {
        if (instance == null)
        {
            instance = new InstallManager();
        }
        return instance;
    }

    /**
     * Updates studio in one single operation based in a link to look
     * for the available updates. The backend parameter 
     * tells the manager how to look for updates on the site (for instance 
     * a P2 update site).
     * 
     * IMPORTANT: the method listAllAvailableUpdates MUST be called first
     */
    public IStatus updateStudio(List<URI> links, BACKEND backEnd, IProgressMonitor monitor)
    {
        Status status =
                new Status(IStatus.ERROR, InstallerPlugin.PLUGIN_ID, 0,
                        InstallerNLS.InstallManager_Could_Not_Find_Proper_Backend, null);

        switch (backEnd)
        {
            case P2:
            {
                return p2Installer.updateStudio(monitor);
            }

            default:
            {
                StudioLogger.debug(this, "updateStudio felt back to default.");
                break;
            }
        }

        return status;
    }

    /* (non-Javadoc)
     * @see com.motorola.studio.android.installer.utilities.IInstallManager#listAllAvailableUpdates(java.util.Collection, java.util.List, com.motorola.studio.android.installer.utilities.IInstallManager.CATEGORY, com.motorola.studio.android.installer.utilities.IInstallManager.BACKEND, org.eclipse.core.runtime.IProgressMonitor)
     */
    public IStatus listAllAvailableUpdates(Collection<InstallableItem> listToFill, List<URI> links,
            CATEGORY category, BACKEND backEnd, IProgressMonitor monitor) throws InstallerException
    {

        IStatus status = null;
        switch (backEnd)
        {
            case P2:
                status =
                        p2Installer.listAllAvailableUpdates(listToFill, links, category, backEnd,
                                monitor);
                break;

            default:
            {
                StudioLogger.debug(this, "listAllAvailableUpdates felt back to default.");
                break;
            }
        }
        return status;

    }

}