Lesson4Part1Exercise.java

/*
 * Copyright (C) 2015 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.android.talkback.tutorial.exercise;

import android.content.Context;
import com.android.talkback.CursorGranularity;
import com.android.talkback.R;
import com.android.talkback.SpeechController;
import com.android.talkback.controller.CursorController;
import com.google.android.marvin.talkback.TalkBackService;

public class Lesson4Part1Exercise extends TextExercise implements
        CursorController.GranularityChangeListener {

    @Override
    public void onInitialized(Context context) {
        TalkBackService service = TalkBackService.getInstance();
        if (service != null) {
            CursorController cursorController = service.getCursorController();
            cursorController.addGranularityListener(this);
        }
    }

    @Override
    public void clear() {
        TalkBackService service = TalkBackService.getInstance();
        if (service != null) {
            CursorController cursorController = service.getCursorController();
            cursorController.removeGranularityListener(this);
        }
    }

    @Override
    public CharSequence getText(Context context) {
        return context.getString(R.string.tutorial_lesson_4_sample_text);
    }

    @Override
    public void onAction(Context context, String action) {
        TalkBackService service = TalkBackService.getInstance();
        if (service == null) {
            return;
        }

        if (context.getString(R.string.shortcut_value_local_breakout).equals(action)) {
            SpeechController speechController = service.getSpeechController();
            speechController.speak(context.getString(R.string.tutorial_lesson_4_page1_message),
                    SpeechController.QUEUE_MODE_INTERRUPT, 0, null);
        }
    }

    @Override
    public void onGranularityChanged(CursorGranularity granularity) {
    }
}