[24] | 1 | //
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| 2 | // PSAlarm.m
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| 3 | // Pester
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| 4 | //
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| 5 | // Created by Nicholas Riley on Wed Oct 09 2002.
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| 6 | // Copyright (c) 2002 Nicholas Riley. All rights reserved.
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| 7 | //
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| 8 |
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| 9 | #import "PSAlarm.h"
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| 10 |
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[26] | 11 | NSString * const PSAlarmTimerSetNotification = @"PSAlarmTimerSetNotification";
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| 12 | NSString * const PSAlarmTimerExpiredNotification = @"PSAlarmTimerExpiredNotification";
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[24] | 13 |
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| 14 | @implementation PSAlarm
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| 15 |
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[26] | 16 | - (void)dealloc;
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| 17 | {
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| 18 | // NSLog(@"DEALLOC %@", self);
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| 19 | alarmType = PSAlarmInvalid;
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| 20 | [alarmDate release]; alarmDate = nil;
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| 21 | [alarmMessage release]; alarmMessage = nil;
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| 22 | [invalidMessage release]; invalidMessage = nil;
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| 23 | [timer release]; timer = nil;
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| 24 | [super dealloc];
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| 25 | }
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| 26 |
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[24] | 27 | - (void)_setAlarmDate:(NSCalendarDate *)aDate;
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| 28 | {
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| 29 | if (alarmDate != aDate) {
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| 30 | [alarmDate release];
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| 31 | alarmDate = nil;
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| 32 | alarmDate = [aDate retain];
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| 33 | }
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| 34 | }
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| 35 |
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| 36 | - (void)_invalidate:(NSString *)aMessage;
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| 37 | {
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| 38 | alarmType = PSAlarmInvalid;
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| 39 | if (aMessage != invalidMessage) {
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| 40 | [invalidMessage release];
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| 41 | invalidMessage = nil;
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| 42 | [self _setAlarmDate: nil];
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| 43 | alarmInterval = 0;
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| 44 | invalidMessage = [aMessage retain];
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| 45 | }
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| 46 | }
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| 47 |
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| 48 | - (void)_validateForType:(PSAlarmType)type;
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| 49 | {
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| 50 | [invalidMessage release];
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| 51 | invalidMessage = nil;
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| 52 | alarmType = type;
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| 53 | }
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| 54 |
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| 55 | - (void)_setDateFromInterval;
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| 56 | {
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| 57 | [alarmDate release]; alarmDate = nil;
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| 58 | alarmDate = [NSCalendarDate dateWithTimeIntervalSinceNow: alarmInterval];
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| 59 | [alarmDate retain];
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| 60 | [self _validateForType: PSAlarmInterval];
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| 61 | }
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| 62 |
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| 63 | - (void)setInterval:(NSTimeInterval)anInterval;
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| 64 | {
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| 65 | alarmInterval = anInterval;
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| 66 | if (alarmInterval <= 0) {
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| 67 | [self _invalidate: @"Please specify an alarm interval."]; return;
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| 68 | }
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[26] | 69 | [self _setDateFromInterval];
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[24] | 70 | }
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| 71 |
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| 72 | - (void)_setIntervalFromDate;
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| 73 | {
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| 74 | alarmInterval = [alarmDate timeIntervalSinceNow];
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| 75 | if (alarmInterval <= 0) {
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| 76 | [self _invalidate: @"Please specify an alarm time in the future."];
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| 77 | return;
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| 78 | }
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| 79 | [self _validateForType: PSAlarmDate];
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| 80 | }
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| 81 |
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[26] | 82 | - (void)setForDateAtTime:(NSCalendarDate *)dateTime;
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[24] | 83 | {
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[26] | 84 | [self _setAlarmDate: dateTime];
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[24] | 85 | [self _setIntervalFromDate];
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| 86 | }
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| 87 |
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| 88 | - (void)setForDate:(NSDate *)date atTime:(NSDate *)time;
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| 89 | {
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| 90 | NSCalendarDate *calTime, *calDate;
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| 91 | if (time == nil && date == nil) {
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| 92 | [self _invalidate: @"Please specify an alarm date and time."]; return;
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| 93 | }
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| 94 | if (time == nil) {
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| 95 | [self _invalidate: @"Please specify an alarm time."]; return;
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| 96 | }
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| 97 | if (date == nil) {
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| 98 | [self _invalidate: @"Please specify an alarm date."]; return;
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| 99 | }
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| 100 | // XXX if calTime's date is different from the default date, complain
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| 101 | calTime = [NSCalendarDate dateWithTimeIntervalSinceReferenceDate: [time timeIntervalSinceReferenceDate]];
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| 102 | calDate = [NSCalendarDate dateWithTimeIntervalSinceReferenceDate: [date timeIntervalSinceReferenceDate]];
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| 103 | if (calTime == nil || calDate == nil) {
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| 104 | [self _invalidate: @"Please specify a reasonable date and time."];
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| 105 | }
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| 106 | [self setForDateAtTime:
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| 107 | [[[NSCalendarDate alloc] initWithYear: [calDate yearOfCommonEra]
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| 108 | month: [calDate monthOfYear]
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| 109 | day: [calDate dayOfMonth]
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| 110 | hour: [calTime hourOfDay]
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| 111 | minute: [calTime minuteOfHour]
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| 112 | second: [calTime secondOfMinute]
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| 113 | timeZone: nil] autorelease]];
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| 114 | }
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| 115 |
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| 116 | - (BOOL)isValid;
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| 117 | {
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[26] | 118 | if (alarmType == PSAlarmDate) [self _setIntervalFromDate];
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| 119 | return (alarmType != PSAlarmInvalid);
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[24] | 120 | }
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| 121 |
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| 122 | - (void)setMessage:(NSString *)aMessage;
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| 123 | {
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| 124 | if (aMessage != alarmMessage) {
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| 125 | [alarmMessage release];
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| 126 | alarmMessage = nil;
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| 127 | alarmMessage = [aMessage retain];
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| 128 | }
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| 129 | }
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| 130 |
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| 131 | - (NSString *)message;
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| 132 | {
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| 133 | if (alarmMessage == nil || [alarmMessage isEqualToString: @""])
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| 134 | return @"Alarm!";
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| 135 | return alarmMessage;
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| 136 | }
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| 137 |
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| 138 | - (NSString *)invalidMessage;
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| 139 | {
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[26] | 140 | if (invalidMessage == nil) return @"";
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[24] | 141 | return invalidMessage;
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| 142 | }
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| 143 |
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| 144 | - (NSDate *)date;
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| 145 | {
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| 146 | if (alarmType == PSAlarmInterval) [self _setDateFromInterval];
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| 147 | return alarmDate;
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| 148 | }
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| 149 |
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| 150 | - (NSTimeInterval)interval;
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| 151 | {
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[26] | 152 | if (alarmType == PSAlarmSet) return [timer timeInterval]; // XXX counts down?
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[24] | 153 | if (alarmType == PSAlarmDate) [self _setIntervalFromDate];
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| 154 | return alarmInterval;
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| 155 | }
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| 156 |
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[26] | 157 | - (BOOL)setTimer;
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| 158 | {
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| 159 | switch (alarmType) {
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| 160 | case PSAlarmDate: if (![self isValid]) return NO;
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| 161 | case PSAlarmInterval:
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| 162 | timer = [NSTimer scheduledTimerWithTimeInterval: alarmInterval
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| 163 | target: self
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| 164 | selector: @selector(_timerExpired:)
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| 165 | userInfo: nil
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| 166 | repeats: NO];
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| 167 | if (timer != nil) {
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| 168 | alarmType = PSAlarmSet;
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| 169 | [[NSNotificationCenter defaultCenter] postNotificationName: PSAlarmTimerSetNotification object: self];
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| 170 | return YES;
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| 171 | }
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| 172 | default:
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| 173 | return NO;
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| 174 | }
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| 175 | }
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| 176 |
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| 177 | - (void)cancel;
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| 178 | {
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| 179 | [timer release]; timer = nil;
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| 180 | }
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| 181 |
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| 182 | - (void)_timerExpired:(NSTimer *)aTimer;
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| 183 | {
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| 184 | [[NSNotificationCenter defaultCenter] postNotificationName: PSAlarmTimerExpiredNotification object: self];
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| 185 | timer = nil;
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| 186 | [timer release];
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| 187 | }
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| 188 |
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| 189 | - (NSString *)_alarmTypeString;
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| 190 | {
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| 191 | switch (alarmType) {
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| 192 | case PSAlarmDate: return @"PSAlarmDate";
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| 193 | case PSAlarmInterval: return @"PSAlarmInterval";
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| 194 | case PSAlarmSet: return @"PSAlarmSet";
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| 195 | case PSAlarmInvalid: return @"PSAlarmInvalid";
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| 196 | default: return [NSString stringWithFormat: @"<unknown: %u>", alarmType];
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| 197 | }
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| 198 | }
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| 199 |
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| 200 | - (NSComparisonResult)compare:(PSAlarm *)otherAlarm;
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| 201 | {
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| 202 | return [[self date] compare: [otherAlarm date]];
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| 203 | }
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| 204 |
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| 205 | - (NSString *)description;
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| 206 | {
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| 207 | return [NSString stringWithFormat: @"%@: type %@ date %@ interval %.1f%@",
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| 208 | [super description], [self _alarmTypeString], alarmDate, alarmInterval,
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| 209 | (alarmType == PSAlarmInvalid ?
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| 210 | [NSString stringWithFormat: @"\ninvalid message: %@", invalidMessage]
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| 211 | : (alarmType == PSAlarmSet ?
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| 212 | [NSString stringWithFormat: @"\ntimer: %@", timer] : @""))];
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| 213 | }
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| 214 |
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| 215 | - (void)encodeWithCoder:(NSCoder *)coder;
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| 216 | {
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| 217 | if (![self isValid]) return;
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| 218 | [coder encodeValueOfObjCType: @encode(PSAlarmType) at: &alarmType];
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| 219 | switch (alarmType) {
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| 220 | case PSAlarmDate:
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| 221 | case PSAlarmSet:
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| 222 | [coder encodeObject: alarmDate];
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| 223 | break;
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| 224 | case PSAlarmInterval:
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| 225 | [coder encodeValueOfObjCType: @encode(NSTimeInterval) at: &alarmInterval];
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| 226 | break;
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| 227 | default:
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| 228 | break;
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| 229 | }
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| 230 | [coder encodeObject: alarmMessage];
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| 231 | return;
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| 232 | }
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| 233 |
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| 234 | - (id)initWithCoder:(NSCoder *)coder;
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| 235 | {
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| 236 | if ( (self = [super init]) != nil) {
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| 237 | [coder decodeValueOfObjCType: @encode(PSAlarmType) at: &alarmType];
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| 238 | switch (alarmType) {
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| 239 | case PSAlarmDate:
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| 240 | case PSAlarmSet:
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| 241 | [self _setAlarmDate: [coder decodeObject]];
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| 242 | break;
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| 243 | case PSAlarmInterval:
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| 244 | [coder decodeValueOfObjCType: @encode(NSTimeInterval) at: &alarmInterval];
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| 245 | break;
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| 246 | default:
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| 247 | break;
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| 248 | }
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| 249 | [self setMessage: [coder decodeObject]];
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| 250 | if (alarmType == PSAlarmSet) {
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| 251 | alarmType = PSAlarmDate;
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| 252 | [self setTimer];
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| 253 | }
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| 254 | }
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| 255 | return self;
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| 256 | }
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| 257 |
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[24] | 258 | @end
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