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.widget.DatePicker; 8 import android.widget.DatePicker.OnDateChangedListener; 9 10 import java.util.Calendar; 11 import java.util.TimeZone; 12 13 /** 14 * Normalize a date dialog so that it respect min and max. 15 */ 16 class DateDialogNormalizer { 17 setLimits(DatePicker picker, long minMillis, long maxMillis)18 private static void setLimits(DatePicker picker, long minMillis, long maxMillis) { 19 // DatePicker intervals are non inclusive, the DatePicker will throw an 20 // exception when setting the min/max attribute to the current date 21 // so make sure this never happens 22 if (maxMillis <= minMillis) { 23 return; 24 } 25 Calendar minCal = trimToDate(minMillis); 26 Calendar maxCal = trimToDate(maxMillis); 27 int currentYear = picker.getYear(); 28 int currentMonth = picker.getMonth(); 29 int currentDayOfMonth = picker.getDayOfMonth(); 30 picker.updateDate(maxCal.get(Calendar.YEAR), 31 maxCal.get(Calendar.MONTH), 32 maxCal.get(Calendar.DAY_OF_MONTH)); 33 picker.setMinDate(minCal.getTimeInMillis()); 34 picker.updateDate(minCal.get(Calendar.YEAR), 35 minCal.get(Calendar.MONTH), 36 minCal.get(Calendar.DAY_OF_MONTH)); 37 picker.setMaxDate(maxCal.getTimeInMillis()); 38 39 // Restore the current date, this will keep the min/max settings 40 // previously set into account. 41 picker.updateDate(currentYear, currentMonth, currentDayOfMonth); 42 } 43 trimToDate(long time)44 private static Calendar trimToDate(long time) { 45 Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("GMT")); 46 cal.clear(); 47 cal.setTimeInMillis(time); 48 Calendar result = Calendar.getInstance(TimeZone.getTimeZone("GMT")); 49 result.clear(); 50 result.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH), 51 0, 0, 0); 52 return result; 53 } 54 55 /** 56 * Normalizes an existing DateDialogPicker changing the default date if 57 * needed to comply with the {@code min} and {@code max} attributes. 58 */ normalize(DatePicker picker, OnDateChangedListener listener, int year, int month, int day, int hour, int minute, long minMillis, long maxMillis)59 static void normalize(DatePicker picker, OnDateChangedListener listener, 60 int year, int month, int day, int hour, int minute, long minMillis, long maxMillis) { 61 Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("GMT")); 62 calendar.clear(); 63 calendar.set(year, month, day, hour, minute, 0); 64 if (calendar.getTimeInMillis() < minMillis) { 65 calendar.clear(); 66 calendar.setTimeInMillis(minMillis); 67 } else if (calendar.getTimeInMillis() > maxMillis) { 68 calendar.clear(); 69 calendar.setTimeInMillis(maxMillis); 70 } 71 picker.init( 72 calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), 73 calendar.get(Calendar.DAY_OF_MONTH), listener); 74 75 setLimits(picker, minMillis, maxMillis); 76 } 77 } 78