/*
 * 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.incallui.answer.impl.classifier;

import android.view.MotionEvent;

/** A classifier which looks at the total number of traces in the whole gesture. */
class PointerCountClassifier extends GestureClassifier {
  private int count;

  public PointerCountClassifier(ClassifierData classifierData) {
    count = 0;
  }

  @Override
  public String getTag() {
    return "PTR_CNT";
  }

  @Override
  public void onTouchEvent(MotionEvent event) {
    int action = event.getActionMasked();

    if (action == MotionEvent.ACTION_DOWN) {
      count = 1;
    }

    if (action == MotionEvent.ACTION_POINTER_DOWN) {
      ++count;
    }
  }

  @Override
  public float getFalseTouchEvaluation() {
    return PointerCountEvaluator.evaluate(count);
  }
}