fr.cobaltians.cobalt.plugin.CobaltPluginManager.java Source code

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Here is the source code for fr.cobaltians.cobalt.plugin.CobaltPluginManager.java

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/**
 *
 * CobaltPluginManager
 * Cobalt
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2014 Cobaltians
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 */

package fr.cobaltians.cobalt.plugin;

import fr.cobaltians.cobalt.Cobalt;
import fr.cobaltians.cobalt.fragments.CobaltFragment;

import android.app.Activity;
import android.content.Context;
import android.util.Log;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.HashMap;

import org.json.JSONException;
import org.json.JSONObject;

public final class CobaltPluginManager {

    // TAG
    private static final String TAG = CobaltPluginManager.class.getSimpleName();
    private static final String GET_INSTANCE_METHOD_NAME = "getInstance";

    /********************************************************************************
      * MEMBERS
      ********************************************************************************/

    private static CobaltPluginManager sInstance;

    private final Context mContext;
    private final HashMap<String, Class<? extends CobaltAbstractPlugin>> mPluginsMap;

    /******************************************************************************
      * CONSTRUCTORS
      ******************************************************************************/

    private CobaltPluginManager(Context context) {
        mContext = context;
        mPluginsMap = Cobalt.getInstance(mContext).getPlugins();
    }

    public static CobaltPluginManager getInstance(Context context) {
        if (sInstance == null) {
            sInstance = new CobaltPluginManager(context);
        }

        return sInstance;
    }

    /****************************************************************************************************************************************
      * COBALT METHODS
      ****************************************************************************************************************************************/

    public boolean onMessage(Context context, CobaltFragment fragment, JSONObject message) {
        try {
            String pluginName = message.getString(Cobalt.kJSPluginName);
            Class<? extends CobaltAbstractPlugin> pluginClass = mPluginsMap.get(pluginName);
            if (pluginClass != null) {
                try {
                    Method pluginGetInstanceMethod = pluginClass.getDeclaredMethod(GET_INSTANCE_METHOD_NAME,
                            CobaltPluginWebContainer.class);
                    try {
                        CobaltPluginWebContainer webContainer = new CobaltPluginWebContainer((Activity) context,
                                fragment);
                        CobaltAbstractPlugin plugin = (CobaltAbstractPlugin) pluginGetInstanceMethod.invoke(null,
                                webContainer);
                        plugin.onMessage(webContainer, message);
                        return true;
                    } catch (NullPointerException exception) {
                        if (Cobalt.DEBUG) {
                            Log.e(TAG, "onMessage: " + pluginClass.getSimpleName()
                                    + ".getInstance(CobaltPluginWebContainer) method must be static.");
                            exception.printStackTrace();
                        }
                    } catch (IllegalAccessException exception) {
                        if (Cobalt.DEBUG)
                            exception.printStackTrace();
                    } catch (InvocationTargetException exception) {
                        if (Cobalt.DEBUG) {
                            Log.e(TAG, "onMessage: exception thrown by " + pluginClass.getSimpleName()
                                    + ".getInstance(CobaltPluginWebContainer) method.");
                            exception.printStackTrace();
                        }
                    }
                } catch (NoSuchMethodException exception) {
                    if (Cobalt.DEBUG) {
                        Log.e(TAG, "onMessage: no method found matching " + pluginClass.getSimpleName()
                                + ".getInstance(CobaltPluginWebContainer).");
                        exception.printStackTrace();
                    }
                }
            } else if (Cobalt.DEBUG)
                Log.e(TAG, "onMessage: no plugin class found for name " + pluginName + ".");
        } catch (JSONException exception) {
            if (Cobalt.DEBUG) {
                Log.e(TAG, "onMessage: name field not found or not a String.");
                exception.printStackTrace();
            }
        }

        return false;
    }

    public void onFragmentDestroyed(Context context, CobaltFragment fragment) {
        Collection<Class<? extends CobaltAbstractPlugin>> pluginClasses = mPluginsMap.values();
        for (Class<? extends CobaltAbstractPlugin> pluginClass : pluginClasses) {

        }
    }
}