/*

 * Copyright (C) 2008 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.tts;



import android.app.Activity;

import android.app.AlertDialog.Builder;

import android.content.Context;

import android.content.DialogInterface;

import android.content.DialogInterface.OnClickListener;

import android.content.Intent;

import android.net.Uri;



/**

 * Creates an alert message that gives the user the option to install the

 * missing TTS that is needed through the Android Market.

 * 

 * @author clchen@google.com (Charles L. Chen)

 */

public class TTSVersionAlert extends Builder {

  // These strings must be in the Java file itself in order for this to be

  // packed into a .jar file.

  private final static String NO_TTS =

      "This application can talk using the text-to-speech (TTS) library. Please install the TTS.";

  private final static String MARKET_URI = "market://search?q=pname:com.google.tts";

  private final static String INSTALL_TTS = "Install the TTS";

  private final static String QUIT = "Do not install the TTS";



  private Activity parent;



  /**

   * The constructor for the TTSVersionAlert.

   * 

   * @param context The context

   * @param noTTSMessage The String that should be shown to users to prompt them

   *        to install the TTS. If null, the default string will be used.

   * @param installButtonMessage The String that should be used for the

   *        "Install the TTS" button. If null, the default string will be used.

   * @param quitButtonMessage The String that should be used for the

   *        "Do not install the TTS" button. If null, the default string will be

   *        used.

   */

  public TTSVersionAlert(Context context, String noTTSMessage, String installButtonMessage,

      String quitButtonMessage) {

    super(context);

    parent = (Activity) context;

    if (noTTSMessage != null) {

      setMessage(noTTSMessage);

    } else {

      setMessage(NO_TTS);

    }





    OnClickListener installListener = new OnClickListener() {

      public void onClick(DialogInterface dialog, int which) {

        Uri marketUri = Uri.parse(MARKET_URI);

        Intent marketIntent = new Intent(Intent.ACTION_VIEW, marketUri);

        parent.startActivity(marketIntent);

      }

    };



    OnClickListener quitListener = new OnClickListener() {

      public void onClick(DialogInterface dialog, int which) {



      }

    };



    if (installButtonMessage != null) {

      setPositiveButton(installButtonMessage, installListener);

    } else {

      setPositiveButton(INSTALL_TTS, installListener);

    }

    if (quitButtonMessage != null) {

      setNegativeButton(quitButtonMessage, quitListener);

    } else {

      setNegativeButton(QUIT, quitListener);

    }

  }



}