ActionModeHoneycomb.java

/*
 * Copyright 2012 Google Inc.
 *
 * 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.google.android.apps.iosched.util.actionmodecompat;

import android.annotation.TargetApi;
import android.os.Build;
import android.support.v4.app.FragmentActivity;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.widget.AbsListView;
import android.widget.ListView;

/**
 * An implementation of {@link ActionMode} that proxies to the native
 * {@link android.view.ActionMode} implementation (shows the contextual action bar).
 */
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
class ActionModeHoneycomb extends ActionMode {
    android.view.ActionMode mNativeActionMode;

    ActionModeHoneycomb() {
    }

    static ActionModeHoneycomb startInternal(final FragmentActivity activity,
            final Callback callback) {
        final ActionModeHoneycomb actionMode = new ActionModeHoneycomb();
        activity.startActionMode(new android.view.ActionMode.Callback() {
            @Override
            public boolean onCreateActionMode(android.view.ActionMode nativeActionMode, Menu menu) {
                actionMode.mNativeActionMode = nativeActionMode;
                return callback.onCreateActionMode(actionMode, menu);
            }

            @Override
            public boolean onPrepareActionMode(android.view.ActionMode nativeActionMode,
                    Menu menu) {
                return callback.onPrepareActionMode(actionMode, menu);
            }

            @Override
            public boolean onActionItemClicked(android.view.ActionMode nativeActionMode,
                    MenuItem menuItem) {
                return callback.onActionItemClicked(actionMode, menuItem);
            }

            @Override
            public void onDestroyActionMode(android.view.ActionMode nativeActionMode) {
                callback.onDestroyActionMode(actionMode);
            }
        });
        return actionMode;
    }

    /**{@inheritDoc}*/
    @Override
    public void setTitle(CharSequence title) {
        mNativeActionMode.setTitle(title);
    }

    /**{@inheritDoc}*/
    @Override
    public void setTitle(int resId) {
        mNativeActionMode.setTitle(resId);
    }

    /**{@inheritDoc}*/
    @Override
    public void invalidate() {
        mNativeActionMode.invalidate();
    }

    /**{@inheritDoc}*/
    @Override
    public void finish() {
        mNativeActionMode.finish();
    }

    /**{@inheritDoc}*/
    @Override
    public CharSequence getTitle() {
        return mNativeActionMode.getTitle();
    }

    /**{@inheritDoc}*/
    @Override
    public MenuInflater getMenuInflater() {
        return mNativeActionMode.getMenuInflater();
    }

    public static void beginMultiChoiceMode(ListView listView, FragmentActivity activity,
            final MultiChoiceModeListener listener) {
        listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE_MODAL);
        listView.setMultiChoiceModeListener(new AbsListView.MultiChoiceModeListener() {
            ActionModeHoneycomb mWrappedActionMode;

            @Override
            public void onItemCheckedStateChanged(android.view.ActionMode actionMode, int position,
                    long id, boolean checked) {
                listener.onItemCheckedStateChanged(mWrappedActionMode, position, id, checked);
            }

            @Override
            public boolean onCreateActionMode(android.view.ActionMode actionMode, Menu menu) {
                if (mWrappedActionMode == null) {
                    mWrappedActionMode = new ActionModeHoneycomb();
                    mWrappedActionMode.mNativeActionMode = actionMode;
                }
                return listener.onCreateActionMode(mWrappedActionMode, menu);
            }

            @Override
            public boolean onPrepareActionMode(android.view.ActionMode actionMode, Menu menu) {
                if (mWrappedActionMode == null) {
                    mWrappedActionMode = new ActionModeHoneycomb();
                    mWrappedActionMode.mNativeActionMode = actionMode;
                }
                return listener.onPrepareActionMode(mWrappedActionMode, menu);
            }

            @Override
            public boolean onActionItemClicked(android.view.ActionMode actionMode,
                    MenuItem menuItem) {
                return listener.onActionItemClicked(mWrappedActionMode, menuItem);
            }

            @Override
            public void onDestroyActionMode(android.view.ActionMode actionMode) {
                listener.onDestroyActionMode(mWrappedActionMode);
            }
        });
    }
}