/*
 * Copyright (C) 2008 ZXing authors
 *
 * 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.fanxin.huangfangyi.main.widget.zxing.decoding;

import android.os.Handler;
import android.os.Message;

import com.fanxin.huangfangyi.main.widget.zxing.activity.CaptureActivity;
import com.fanxin.huangfangyi.main.widget.zxing.camera.CameraManager;
import com.fanxin.huangfangyi.main.widget.zxing.view.ViewfinderResultPointCallback;
import com.google.zxing.BarcodeFormat;

import java.util.Vector;

/**
 * This class handles all the messaging which comprises the state machine for capture.
 */
public final class CaptureActivityHandler extends Handler {

  private static final String TAG = CaptureActivityHandler.class.getSimpleName();

  private final CaptureActivity activity;
  private final DecodeThread decodeThread;
  private State state;

  private enum State {
    PREVIEW,
    SUCCESS,
    DONE
  }

  public CaptureActivityHandler(CaptureActivity activity, Vector<BarcodeFormat> decodeFormats,
                                String characterSet) {
    this.activity = activity;
    decodeThread = new DecodeThread(activity, decodeFormats, characterSet,
        new ViewfinderResultPointCallback(activity.getViewfinderView()));
    decodeThread.start();
    state = State.SUCCESS;
    // Start ourselves capturing previews and decoding.
    CameraManager.get().startPreview();
    restartPreviewAndDecode();
  }

  @Override
  public void handleMessage(Message message) {
    switch (message.what) {
      
         
      
        
    }
  }

  public void quitSynchronously() {
    state = State.DONE;
    CameraManager.get().stopPreview();
    Message quit = null;
    quit.sendToTarget();
    try {
      decodeThread.join();
    } catch (InterruptedException e) {
      // continue
    }

    // Be absolutely sure we don't send any queued up messages
//    removeMessages(R.id.decode_succeeded);
//    removeMessages(R.id.decode_failed);
  }

  private void restartPreviewAndDecode() {
    if (state == State.SUCCESS) {
      state = State.PREVIEW;
//      CameraManager.get().requestPreviewFrame(decodeThread.getHandler(), R.id.decode);
//      CameraManager.get().requestAutoFocus(this, R.id.auto_focus);
      activity.drawViewfinder();
    }
  }

}