content: /*
   * Copyright (C) 2013 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.datetimepicker;
  
  import android.animation.Keyframe;
  import android.animation.ObjectAnimator;
  import android.animation.PropertyValuesHolder;
  import android.annotation.SuppressLint;
  import android.os.Build;
  import android.text.format.Time;
  import android.view.View;
  
  import java.util.Calendar;
  
  /**
   * Utility helper functions for time and date pickers.
   *
   * @deprecated This module is deprecated. Do not use this class.
   */
  @Deprecated
  public class Utils {
  
      public static final int MONDAY_BEFORE_JULIAN_EPOCH = Time.EPOCH_JULIAN_DAY - 3;
      public static final int PULSE_ANIMATOR_DURATION = 544;
  
      // Alpha level for time picker selection.
      public static final int SELECTED_ALPHA = 51;
      public static final int SELECTED_ALPHA_THEME_DARK = 102;
      // Alpha level for fully opaque.
      public static final int FULL_ALPHA = 255;
  
  
      static final String SHARED_PREFS_NAME = "com.android.calendar_preferences";
  
      public static boolean isJellybeanOrLater() {
        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN;
      }
  
      /**
       * Try to speak the specified text, for accessibility. Only available on JB or later.
       * @param text Text to announce.
       */
      @SuppressLint("NewApi")
      public static void tryAccessibilityAnnounce(View view, CharSequence text) {
          if (isJellybeanOrLater() && view != null && text != null) {
              view.announceForAccessibility(text);
          }
      }
  
      public static int getDaysInMonth(int month, int year) {
          switch (month) {
              case Calendar.JANUARY:
              case Calendar.MARCH:
              case Calendar.MAY:
              case Calendar.JULY:
              case Calendar.AUGUST:
              case Calendar.OCTOBER:
              case Calendar.DECEMBER:
                  return 31;
              case Calendar.APRIL:
              case Calendar.JUNE:
              case Calendar.SEPTEMBER:
              case Calendar.NOVEMBER:
                  return 30;
              case Calendar.FEBRUARY:
                  return (year % 4 == 0) ? 29 : 28;
              default:
                  throw new IllegalArgumentException("Invalid Month");
          }
      }
  
      /**
       * Takes a number of weeks since the epoch and calculates the Julian day of
       * the Monday for that week.
       *
       * This assumes that the week containing the {@link Time#EPOCH_JULIAN_DAY}
       * is considered week 0. It returns the Julian day for the Monday
       * {@code week} weeks after the Monday of the week containing the epoch.
       *
       * @param week Number of weeks since the epoch
       * @return The julian day for the Monday of the given week since the epoch
       */
      public static int getJulianMondayFromWeeksSinceEpoch(int week) {
          return MONDAY_BEFORE_JULIAN_EPOCH + week * 7;
      }
  
      /**
       * Returns the week since {@link Time#EPOCH_JULIAN_DAY} (Jan 1, 1970)
       * adjusted for first day of week.
       *
       * This takes a julian day and the week start day and calculates which
       * week since {@link Time#EPOCH_JULIAN_DAY} that day occurs in, starting
       * at 0. *Do not* use this to compute the ISO week number for the year.
       *
       * @param julianDay The julian day to calculate the week number for
       * @param firstDayOfWeek Which week day is the first day of the week,
       *          see {@link Time#SUNDAY}
       * @return Weeks since the epoch
       */
      public static int getWeeksSinceEpochFromJulianDay(int julianDay, int firstDayOfWeek) {
          int diff = Time.THURSDAY - firstDayOfWeek;
          if (diff < 0) {
              diff += 7;
          }
          int refDay = Time.EPOCH_JULIAN_DAY - diff;
          return (julianDay - refDay) / 7;
      }
  
      /**
       * Render an animator to pulsate a view in place.
       * @param labelToAnimate the view to pulsate.
       * @return The animator object. Use .start() to begin.
       */
      public static ObjectAnimator getPulseAnimator(View labelToAnimate, float decreaseRatio,
              float increaseRatio) {
          Keyframe k0 = Keyframe.ofFloat(0f, 1f);
          Keyframe k1 = Keyframe.ofFloat(0.275f, decreaseRatio);
          Keyframe k2 = Keyframe.ofFloat(0.69f, increaseRatio);
          Keyframe k3 = Keyframe.ofFloat(1f, 1f);
  
          PropertyValuesHolder scaleX = PropertyValuesHolder.ofKeyframe("scaleX", k0, k1, k2, k3);
          PropertyValuesHolder scaleY = PropertyValuesHolder.ofKeyframe("scaleY", k0, k1, k2, k3);
          ObjectAnimator pulseAnimator =
                  ObjectAnimator.ofPropertyValuesHolder(labelToAnimate, scaleX, scaleY);
          pulseAnimator.setDuration(PULSE_ANIMATOR_DURATION);
  
          return pulseAnimator;
      }
  }
  