source: trunk/Cocoa/Pester/Source/PSAlarm.m@ 24

Last change on this file since 24 was 24, checked in by Nicholas Riley, 20 years ago

Pester 1.0d2

File size: 3.7 KB
Line 
1//
2// PSAlarm.m
3// Pester
4//
5// Created by Nicholas Riley on Wed Oct 09 2002.
6// Copyright (c) 2002 Nicholas Riley. All rights reserved.
7//
8
9#import "PSAlarm.h"
10
11
12@implementation PSAlarm
13
14- (void)_setAlarmDate:(NSCalendarDate *)aDate;
15{
16 if (alarmDate != aDate) {
17 [alarmDate release];
18 alarmDate = nil;
19 alarmDate = [aDate retain];
20 }
21}
22
23- (void)_invalidate:(NSString *)aMessage;
24{
25 alarmType = PSAlarmInvalid;
26 if (aMessage != invalidMessage) {
27 [invalidMessage release];
28 invalidMessage = nil;
29 [self _setAlarmDate: nil];
30 alarmInterval = 0;
31 invalidMessage = [aMessage retain];
32 }
33}
34
35- (void)_validateForType:(PSAlarmType)type;
36{
37 [invalidMessage release];
38 invalidMessage = nil;
39 alarmType = type;
40}
41
42- (void)_setDateFromInterval;
43{
44 [alarmDate release]; alarmDate = nil;
45 alarmDate = [NSCalendarDate dateWithTimeIntervalSinceNow: alarmInterval];
46 [alarmDate retain];
47 [self _validateForType: PSAlarmInterval];
48}
49
50- (void)setInterval:(NSTimeInterval)anInterval;
51{
52 alarmInterval = anInterval;
53 if (alarmInterval <= 0) {
54 [self _invalidate: @"Please specify an alarm interval."]; return;
55 }
56}
57
58- (void)_setIntervalFromDate;
59{
60 alarmInterval = [alarmDate timeIntervalSinceNow];
61 if (alarmInterval <= 0) {
62 [self _invalidate: @"Please specify an alarm time in the future."];
63 return;
64 }
65 [self _validateForType: PSAlarmDate];
66}
67
68- (void)setForDateAtTime:(NSDate *)dateTime;
69{
70 if (dateTime != alarmDate) {
71 [alarmDate release];
72 alarmDate = nil;
73 alarmDate = [dateTime retain];
74 }
75 [self _setIntervalFromDate];
76}
77
78- (void)setForDate:(NSDate *)date atTime:(NSDate *)time;
79{
80 NSCalendarDate *calTime, *calDate;
81 if (time == nil && date == nil) {
82 [self _invalidate: @"Please specify an alarm date and time."]; return;
83 }
84 if (time == nil) {
85 [self _invalidate: @"Please specify an alarm time."]; return;
86 }
87 if (date == nil) {
88 [self _invalidate: @"Please specify an alarm date."]; return;
89 }
90 // XXX if calTime's date is different from the default date, complain
91 calTime = [NSCalendarDate dateWithTimeIntervalSinceReferenceDate: [time timeIntervalSinceReferenceDate]];
92 calDate = [NSCalendarDate dateWithTimeIntervalSinceReferenceDate: [date timeIntervalSinceReferenceDate]];
93 if (calTime == nil || calDate == nil) {
94 [self _invalidate: @"Please specify a reasonable date and time."];
95 }
96 [self setForDateAtTime:
97 [[[NSCalendarDate alloc] initWithYear: [calDate yearOfCommonEra]
98 month: [calDate monthOfYear]
99 day: [calDate dayOfMonth]
100 hour: [calTime hourOfDay]
101 minute: [calTime minuteOfHour]
102 second: [calTime secondOfMinute]
103 timeZone: nil] autorelease]];
104}
105
106- (BOOL)isValid;
107{
108 return (alarmType == PSAlarmInvalid);
109}
110
111- (void)setMessage:(NSString *)aMessage;
112{
113 if (aMessage != alarmMessage) {
114 [alarmMessage release];
115 alarmMessage = nil;
116 alarmMessage = [aMessage retain];
117 }
118}
119
120- (NSString *)message;
121{
122 if (alarmMessage == nil || [alarmMessage isEqualToString: @""])
123 return @"Alarm!";
124 return alarmMessage;
125}
126
127- (NSString *)invalidMessage;
128{
129 return invalidMessage;
130}
131
132- (NSDate *)date;
133{
134 if (alarmType == PSAlarmInterval) [self _setDateFromInterval];
135 return alarmDate;
136}
137
138- (NSTimeInterval)interval;
139{
140 if (alarmType == PSAlarmDate) [self _setIntervalFromDate];
141 return alarmInterval;
142}
143
144@end
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