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1 // Copyright 2012 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.text.DateFormatSymbols; | |
12 import java.util.Arrays; | |
13 import java.util.Calendar; | |
14 import java.util.Locale; | |
15 import java.util.TimeZone; | |
16 | |
17 public class MonthPicker extends TwoFieldDatePicker { | |
18 private static final int MONTHS_NUMBER = 12; | |
19 | |
20 private final String[] mShortMonths; | |
21 | |
22 public MonthPicker(Context context, double minValue, double maxValue) { | |
23 super(context, minValue, maxValue); | |
24 | |
25 getPositionInYearSpinner().setContentDescription( | |
26 getResources().getString(R.string.accessibility_date_picker_mont
h)); | |
27 | |
28 // initialization based on locale | |
29 mShortMonths = | |
30 DateFormatSymbols.getInstance(Locale.getDefault()).getShortMonth
s(); | |
31 | |
32 // initialize to current date | |
33 Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("UTC")); | |
34 init(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), null); | |
35 } | |
36 | |
37 /** | |
38 * Creates a date object from the |value| which is months since epoch. | |
39 */ | |
40 public static Calendar createDateFromValue(double value) { | |
41 int year = (int) Math.min(value / 12 + 1970, Integer.MAX_VALUE); | |
42 int month = (int) (value % 12); | |
43 Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("UTC")); | |
44 cal.clear(); | |
45 cal.set(year, month, 1); | |
46 return cal; | |
47 } | |
48 | |
49 @Override | |
50 protected Calendar getDateForValue(double value) { | |
51 return MonthPicker.createDateFromValue(value); | |
52 } | |
53 | |
54 @Override | |
55 protected void setCurrentDate(int year, int month) { | |
56 Calendar date = Calendar.getInstance(TimeZone.getTimeZone("UTC")); | |
57 date.set(year, month, 1); | |
58 if (date.before(getMinDate())) { | |
59 setCurrentDate(getMinDate()); | |
60 } else if (date.after(getMaxDate())) { | |
61 setCurrentDate(getMaxDate()); | |
62 } else { | |
63 setCurrentDate(date); | |
64 } | |
65 } | |
66 | |
67 @Override | |
68 protected void updateSpinners() { | |
69 super.updateSpinners(); | |
70 | |
71 // make sure the month names are a zero based array | |
72 // with the months in the month spinner | |
73 String[] displayedValues = Arrays.copyOfRange(mShortMonths, | |
74 getPositionInYearSpinner().getMinValue(), | |
75 getPositionInYearSpinner().getMaxValue() + 1); | |
76 getPositionInYearSpinner().setDisplayedValues(displayedValues); | |
77 } | |
78 | |
79 /** | |
80 * @return The selected month. | |
81 */ | |
82 public int getMonth() { | |
83 return getCurrentDate().get(Calendar.MONTH); | |
84 } | |
85 | |
86 @Override | |
87 public int getPositionInYear() { | |
88 return getMonth(); | |
89 } | |
90 | |
91 @Override | |
92 protected int getMaxYear() { | |
93 return getMaxDate().get(Calendar.YEAR); | |
94 } | |
95 | |
96 @Override | |
97 protected int getMinYear() { | |
98 return getMinDate().get(Calendar.YEAR); | |
99 } | |
100 | |
101 | |
102 @Override | |
103 protected int getMaxPositionInYear(int year) { | |
104 if (year == getMaxDate().get(Calendar.YEAR)) { | |
105 return getMaxDate().get(Calendar.MONTH); | |
106 } | |
107 return MONTHS_NUMBER - 1; | |
108 } | |
109 | |
110 @Override | |
111 protected int getMinPositionInYear(int year) { | |
112 if (year == getMinDate().get(Calendar.YEAR)) { | |
113 return getMinDate().get(Calendar.MONTH); | |
114 } | |
115 return 0; | |
116 } | |
117 } | |
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