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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 package org.chromium.content.browser.input; | |
| 6 | |
| 7 import android.content.Context; | |
| 8 | |
| 9 import org.chromium.content.R; | |
| 10 | |
| 11 import java.util.Calendar; | |
| 12 import java.util.TimeZone; | |
| 13 | |
| 14 // This class is heavily based on android.widget.DatePicker. | |
| 15 public class WeekPicker extends TwoFieldDatePicker { | |
| 16 | |
| 17 public WeekPicker(Context context, double minValue, double maxValue) { | |
| 18 super(context, minValue, maxValue); | |
| 19 | |
| 20 getPositionInYearSpinner().setContentDescription( | |
| 21 getResources().getString(R.string.accessibility_date_picker_week
)); | |
| 22 | |
| 23 // initialize to current date | |
| 24 Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("UTC")); | |
| 25 cal.setFirstDayOfWeek(Calendar.MONDAY); | |
| 26 cal.setMinimalDaysInFirstWeek(4); | |
| 27 cal.setTimeInMillis(System.currentTimeMillis()); | |
| 28 init(getISOWeekYearForDate(cal), getWeekForDate(cal), null); | |
| 29 } | |
| 30 | |
| 31 /** | |
| 32 * Creates a date object from the |year| and |week|. | |
| 33 */ | |
| 34 public static Calendar createDateFromWeek(int year, int week) { | |
| 35 Calendar date = Calendar.getInstance(TimeZone.getTimeZone("UTC")); | |
| 36 date.clear(); | |
| 37 date.setFirstDayOfWeek(Calendar.MONDAY); | |
| 38 date.setMinimalDaysInFirstWeek(4); | |
| 39 date.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY); | |
| 40 date.set(Calendar.YEAR, year); | |
| 41 date.set(Calendar.WEEK_OF_YEAR, week); | |
| 42 return date; | |
| 43 } | |
| 44 | |
| 45 /** | |
| 46 * Creates a date object from the |value| which is milliseconds since epoch. | |
| 47 */ | |
| 48 public static Calendar createDateFromValue(double value) { | |
| 49 Calendar date = Calendar.getInstance(TimeZone.getTimeZone("UTC")); | |
| 50 date.clear(); | |
| 51 date.setFirstDayOfWeek(Calendar.MONDAY); | |
| 52 date.setMinimalDaysInFirstWeek(4); | |
| 53 date.setTimeInMillis((long) value); | |
| 54 return date; | |
| 55 } | |
| 56 | |
| 57 @Override | |
| 58 protected Calendar getDateForValue(double value) { | |
| 59 return WeekPicker.createDateFromValue(value); | |
| 60 } | |
| 61 | |
| 62 public static int getISOWeekYearForDate(Calendar date) { | |
| 63 int year = date.get(Calendar.YEAR); | |
| 64 int month = date.get(Calendar.MONTH); | |
| 65 int week = date.get(Calendar.WEEK_OF_YEAR); | |
| 66 if (month == 0 && week > 51) { | |
| 67 year--; | |
| 68 } else if (month == 11 && week == 1) { | |
| 69 year++; | |
| 70 } | |
| 71 return year; | |
| 72 } | |
| 73 | |
| 74 public static int getWeekForDate(Calendar date) { | |
| 75 return date.get(Calendar.WEEK_OF_YEAR); | |
| 76 } | |
| 77 | |
| 78 @Override | |
| 79 protected void setCurrentDate(int year, int week) { | |
| 80 Calendar date = createDateFromWeek(year, week); | |
| 81 if (date.before(getMinDate())) { | |
| 82 setCurrentDate(getMinDate()); | |
| 83 } else if (date.after(getMaxDate())) { | |
| 84 setCurrentDate(getMaxDate()); | |
| 85 } else { | |
| 86 setCurrentDate(date); | |
| 87 } | |
| 88 } | |
| 89 | |
| 90 private int getNumberOfWeeks(int year) { | |
| 91 // Create a date in the middle of the year, where the week year matches
the year. | |
| 92 Calendar date = createDateFromWeek(year, 20); | |
| 93 return date.getActualMaximum(Calendar.WEEK_OF_YEAR); | |
| 94 } | |
| 95 | |
| 96 /** | |
| 97 * @return The selected year. | |
| 98 */ | |
| 99 @Override | |
| 100 public int getYear() { | |
| 101 return getISOWeekYearForDate(getCurrentDate()); | |
| 102 } | |
| 103 | |
| 104 /** | |
| 105 * @return The selected week. | |
| 106 */ | |
| 107 public int getWeek() { | |
| 108 return getWeekForDate(getCurrentDate()); | |
| 109 } | |
| 110 | |
| 111 @Override | |
| 112 public int getPositionInYear() { | |
| 113 return getWeek(); | |
| 114 } | |
| 115 | |
| 116 @Override | |
| 117 protected int getMaxYear() { | |
| 118 return getISOWeekYearForDate(getMaxDate()); | |
| 119 } | |
| 120 | |
| 121 @Override | |
| 122 protected int getMinYear() { | |
| 123 return getISOWeekYearForDate(getMinDate()); | |
| 124 } | |
| 125 | |
| 126 @Override | |
| 127 protected int getMaxPositionInYear(int year) { | |
| 128 if (year == getISOWeekYearForDate(getMaxDate())) { | |
| 129 return getWeekForDate(getMaxDate()); | |
| 130 } | |
| 131 return getNumberOfWeeks(year); | |
| 132 } | |
| 133 | |
| 134 @Override | |
| 135 protected int getMinPositionInYear(int year) { | |
| 136 if (year == getISOWeekYearForDate(getMinDate())) { | |
| 137 return getWeekForDate(getMinDate()); | |
| 138 } | |
| 139 return 1; | |
| 140 } | |
| 141 } | |
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Chromium Code Reviews
Issue 574673003:
Move *Picker.java and *PickerDialog.java to ui/android/java/... - Part1 (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master