| 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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| 11 |
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| 12 | @implementation PSAlarm
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| 13 |
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| 14 | - (void)_setAlarmDate:(NSCalendarDate *)aDate;
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| 15 | {
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| 16 | if (alarmDate != aDate) {
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| 17 | [alarmDate release];
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| 18 | alarmDate = nil;
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| 19 | alarmDate = [aDate retain];
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| 20 | }
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| 21 | }
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| 22 |
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| 23 | - (void)_invalidate:(NSString *)aMessage;
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| 24 | {
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| 25 | alarmType = PSAlarmInvalid;
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| 26 | if (aMessage != invalidMessage) {
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| 27 | [invalidMessage release];
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| 28 | invalidMessage = nil;
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| 29 | [self _setAlarmDate: nil];
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| 30 | alarmInterval = 0;
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| 31 | invalidMessage = [aMessage retain];
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| 32 | }
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| 33 | }
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| 34 |
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| 35 | - (void)_validateForType:(PSAlarmType)type;
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| 36 | {
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| 37 | [invalidMessage release];
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| 38 | invalidMessage = nil;
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| 39 | alarmType = type;
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| 40 | }
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| 41 |
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| 42 | - (void)_setDateFromInterval;
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| 43 | {
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| 44 | [alarmDate release]; alarmDate = nil;
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| 45 | alarmDate = [NSCalendarDate dateWithTimeIntervalSinceNow: alarmInterval];
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| 46 | [alarmDate retain];
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| 47 | [self _validateForType: PSAlarmInterval];
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| 48 | }
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| 49 |
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| 50 | - (void)setInterval:(NSTimeInterval)anInterval;
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| 51 | {
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| 52 | alarmInterval = anInterval;
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| 53 | if (alarmInterval <= 0) {
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| 54 | [self _invalidate: @"Please specify an alarm interval."]; return;
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| 55 | }
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| 56 | }
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| 57 |
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| 58 | - (void)_setIntervalFromDate;
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| 59 | {
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| 60 | alarmInterval = [alarmDate timeIntervalSinceNow];
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| 61 | if (alarmInterval <= 0) {
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| 62 | [self _invalidate: @"Please specify an alarm time in the future."];
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| 63 | return;
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| 64 | }
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| 65 | [self _validateForType: PSAlarmDate];
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| 66 | }
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| 67 |
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| 68 | - (void)setForDateAtTime:(NSDate *)dateTime;
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| 69 | {
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| 70 | if (dateTime != alarmDate) {
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| 71 | [alarmDate release];
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| 72 | alarmDate = nil;
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| 73 | alarmDate = [dateTime retain];
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| 74 | }
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| 75 | [self _setIntervalFromDate];
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| 76 | }
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| 77 |
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| 78 | - (void)setForDate:(NSDate *)date atTime:(NSDate *)time;
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| 79 | {
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| 80 | NSCalendarDate *calTime, *calDate;
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| 81 | if (time == nil && date == nil) {
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| 82 | [self _invalidate: @"Please specify an alarm date and time."]; return;
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| 83 | }
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| 84 | if (time == nil) {
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| 85 | [self _invalidate: @"Please specify an alarm time."]; return;
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| 86 | }
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| 87 | if (date == nil) {
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| 88 | [self _invalidate: @"Please specify an alarm date."]; return;
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| 89 | }
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| 90 | // XXX if calTime's date is different from the default date, complain
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| 91 | calTime = [NSCalendarDate dateWithTimeIntervalSinceReferenceDate: [time timeIntervalSinceReferenceDate]];
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| 92 | calDate = [NSCalendarDate dateWithTimeIntervalSinceReferenceDate: [date timeIntervalSinceReferenceDate]];
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| 93 | if (calTime == nil || calDate == nil) {
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| 94 | [self _invalidate: @"Please specify a reasonable date and time."];
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| 95 | }
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| 96 | [self setForDateAtTime:
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| 97 | [[[NSCalendarDate alloc] initWithYear: [calDate yearOfCommonEra]
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| 98 | month: [calDate monthOfYear]
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| 99 | day: [calDate dayOfMonth]
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| 100 | hour: [calTime hourOfDay]
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| 101 | minute: [calTime minuteOfHour]
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| 102 | second: [calTime secondOfMinute]
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| 103 | timeZone: nil] autorelease]];
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| 104 | }
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| 105 |
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| 106 | - (BOOL)isValid;
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| 107 | {
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| 108 | return (alarmType == PSAlarmInvalid);
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| 109 | }
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| 110 |
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| 111 | - (void)setMessage:(NSString *)aMessage;
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| 112 | {
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| 113 | if (aMessage != alarmMessage) {
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| 114 | [alarmMessage release];
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| 115 | alarmMessage = nil;
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| 116 | alarmMessage = [aMessage retain];
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| 117 | }
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| 118 | }
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| 119 |
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| 120 | - (NSString *)message;
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| 121 | {
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| 122 | if (alarmMessage == nil || [alarmMessage isEqualToString: @""])
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| 123 | return @"Alarm!";
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| 124 | return alarmMessage;
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| 125 | }
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| 126 |
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| 127 | - (NSString *)invalidMessage;
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| 128 | {
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| 129 | return invalidMessage;
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| 130 | }
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| 131 |
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| 132 | - (NSDate *)date;
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| 133 | {
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| 134 | if (alarmType == PSAlarmInterval) [self _setDateFromInterval];
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| 135 | return alarmDate;
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| 136 | }
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| 137 |
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| 138 | - (NSTimeInterval)interval;
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| 139 | {
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| 140 | if (alarmType == PSAlarmDate) [self _setIntervalFromDate];
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| 141 | return alarmInterval;
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| 142 | }
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| 143 |
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| 144 | @end
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