/*
 * Copyright (C) 2012 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.dialer.smartdial;

import android.util.Log;
import java.util.ArrayList;

/**
 * Stores information about a range of characters matched in a display name The integers start and
 * end indicate that the range start to end (exclusive) correspond to some characters in the query.
 * Used to highlight certain parts of the contact's display name to indicate that those ranges
 * matched the user's query.
 */
public class SmartDialMatchPosition {

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

  public int start;
  public int end;

  public SmartDialMatchPosition(int start, int end) {
    this.start = start;
    this.end = end;
  }

  /**
   * Used by {@link SmartDialNameMatcher} to advance the positions of a match position found in a
   * sub query.
   *
   * @param inList ArrayList of SmartDialMatchPositions to modify.
   * @param toAdvance Offset to modify by.
   */
  public static void advanceMatchPositions(
      ArrayList<SmartDialMatchPosition> inList, int toAdvance) {
    for (int i = 0; i < inList.size(); i++) {
      inList.get(i).advance(toAdvance);
    }
  }

  /**
   * Used mainly for debug purposes. Displays contents of an ArrayList of SmartDialMatchPositions.
   *
   * @param list ArrayList of SmartDialMatchPositions to print out in a human readable fashion.
   */
  public static void print(ArrayList<SmartDialMatchPosition> list) {
    for (int i = 0; i < list.size(); i++) {
      SmartDialMatchPosition m = list.get(i);
      Log.d(TAG, "[" + m.start + "," + m.end + "]");
    }
  }

  private void advance(int toAdvance) {
    this.start += toAdvance;
    this.end += toAdvance;
  }
}