TutorialController.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;

import android.content.Context;
import android.util.Log;
import com.android.talkback.R;
import com.android.utils.JsonUtils;
import com.android.utils.LogUtils;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.IOException;

public class TutorialController {

    private Tutorial mTutorial;

    public TutorialController(Context context) throws Exception {
        mTutorial = createTutorial(context);
    }

    private Tutorial createTutorial(Context context) throws IOException, JSONException {
        JSONObject tutorialJson = JsonUtils.readFromRawFile(context, R.raw.tutorial);
        return new Tutorial(context, tutorialJson);
    }

    public Tutorial getTutorial() {
        return mTutorial;
    }

    public TutorialLesson getNextLesson(TutorialLesson lesson) {
        int nextIndex = lesson.getLessonIndex() + 1;
        if (nextIndex >= mTutorial.getLessonsCount()) {
            return null;
        }

        return mTutorial.getLesson(nextIndex);
    }
}