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/*
 * Jitsi, the OpenSource Java VoIP and Instant Messaging client.
 *
 * Copyright @ 2015 Atlassian Pty Ltd
 *
 * 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 net.java.sip.communicator.plugin.skinmanager;

import java.util.*;

import net.java.sip.communicator.service.gui.*;
import net.java.sip.communicator.util.*;

import org.jitsi.service.configuration.*;
import org.osgi.framework.*;

/**
 * The <tt>BundleActivator</tt> of the SkinManager plugin.
 *
 * @author Yana Stamcheva
 * @author Adam Netocny, CircleTech, s.r.o.
 */
public class SkinManagerActivator
    implements BundleActivator
{
    /**
     * The bundle context.
     */
    public static BundleContext bundleContext;

    /**
     * The user interface service.
     */
    private static UIService uiService;

    /**
     * Indicates if the skin manager configuration form should be enabled
     */
    private static final String ENABLED_PROP
        = "net.java.sip.communicator.plugin.skinconfig.ENABLED";

    /**
     * Starts this bundle and adds the
     * <td>SkinManagerConfigForm</tt> contained in it to the configuration
     * window obtained from the <tt>UIService</tt>.
     * @param bc the <tt>BundleContext</tt>
     * @throws Exception if one of the operation executed in the start method
     * fails
     */
    public void start(BundleContext bc) throws Exception
    {
        bundleContext = bc;

        // If the skin manager configuration form is disabled don't continue.
        if(getConfigService().getBoolean(ENABLED_PROP, false))
        {
            Dictionary<String, String> properties
                = new Hashtable<String, String>();
            properties.put( ConfigurationForm.FORM_TYPE,
                            ConfigurationForm.ADVANCED_TYPE);
            bundleContext.registerService(
                ConfigurationForm.class.getName(),
                new LazyConfigurationForm(
                    "net.java.sip.communicator.plugin.skinmanager.SkinManagerPanel",
                    getClass().getClassLoader(),
                    "plugin.skinmanager.PLUGIN_ICON",
                    "plugin.skinmanager.SKINS",
                    1001, true),
                properties);
        }
    }

    /**
     * Stops this bundles.
     * @param bc the <tt>BundleContext</tt>
     * @throws Exception if one of the operation executed in the stop method
     * fails
     */
    public void stop(BundleContext bc) throws Exception {}

    /**
     * Returns the <tt>UIService</tt> obtained from the bundle context.
     *
     * @return the <tt>UIService</tt> obtained from the bundle context
     */
    public static UIService getUIService()
    {
        if (uiService == null)
        {
            ServiceReference uiReference =
                bundleContext.getServiceReference(UIService.class.getName());

            uiService =
                (UIService) bundleContext
                    .getService(uiReference);
        }

        return uiService;
    }

    /**
     * Returns a reference to a ConfigurationService implementation currently
     * registered in the bundle context or null if no such implementation was
     * found.
     *
     * @return a currently valid implementation of the ConfigurationService.
     */
    public static ConfigurationService getConfigService()
    {
        return ServiceUtils.getService(
                bundleContext,
                ConfigurationService.class);
    }
}