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1.1 root 1: /*--------------------------------------------------------------------------
2: *
3: * You may freely copy, distribute, and reuse the code in this example.
4: * SHL Systemhouse disclaims any warranty of any kind, expressed or
5: * implied, as to its fitness for any particular use.
6: *
7: * Catalog
8: *
9: * Inherits From: NSObject
10: *
11: * Conforms To: None
12: *
13: * Declared In: Catalog.h
14: *
15: *------------------------------------------------------------------------*/
16: #import "Catalog.h"
17: #import "AppController.h"
18:
19:
20: #define print_trace(arg,isSet) [[NXApp delegate] perform: \
21: @selector(console:) withObject: \
22: [NSArray arrayWithObjects:arg, \
23: [NSValue value:&isSet withObjCType:"char"], nil]]
24: #define display(arg, isSet) [[NXApp delegate] perform: \
25: @selector(display:) withObject: \
26: [NSArray arrayWithObjects:arg, \
27: [NSValue value:&isSet withObjCType:"char"], nil]]
28:
29:
30: #define ACCESSOR_SET_TEXT "\n\n\n\n\(1) takeValuesFromDictionary:\n\
31: (2) %s\n������������������������>"
32: #define ACCESSOR_GET_TEXT "\n\n\n\n(1) valuesForKeys:\n\
33: (2) %s\n<������������������������"
34: #define IVAR_SET_TEXT "(1) takeValuesFromDictionary:\n\
35: (2) matched instance variable\n������������������������>"
36: #define IVAR_GET_TEXT "(1) valuesForKeys:\n\
37: (2) matched instance variable\n<������������������������"
38: #define KVC_SET_TEXT "\n\n\n(1) takeValuesFromDictionary:\n\
39: ������������������������>"
40: #define KVC_GET_TEXT "\n\n\n(1) valuesForKeys:\n\
41: <������������������������"
42:
43:
44:
45:
46: @implementation Catalog
47:
48: /*--------------------------------------------------------------------------
49: * Initializing
50: *------------------------------------------------------------------------*/
51: - (void) dealloc
52: {
53: if (fullname) [fullname release];
54: if (price) [price release];
55: if (volumeTitle) [volumeTitle release];
56: return [super dealloc];
57: }
58:
59:
60: /*--------------------------------------------------------------------------
61: * Accessor methods
62: *------------------------------------------------------------------------*/
63: - authorName
64: {
65: return fullname;
66: }
67:
68:
69: - volumeTitle
70: {
71: return volumeTitle;
72: }
73:
74:
75: - price
76: {
77: id newString, formatString;
78: BOOL isSet = NO;
79:
80: formatString = [NSString stringWithCString: ACCESSOR_GET_TEXT];
81: newString = [NSString stringWithFormat: formatString, sel_getName(_cmd)];
82:
83: print_trace(@"(1) valuesForKeys:\n(2) price\n", isSet);
84: display(newString, isSet);
85:
86: return price;
87: }
88:
89:
90: - setPrice: aPrice
91: {
92: id newString, formatString;
93: BOOL isSet = YES;
94:
95: /*--------------------------------------------------------------------------
96: * the class check is to work around an association bug where different
97: * objects are passed in when value is read from the dataStore vs. when it
98: * is read from the user interface.
99: *------------------------------------------------------------------------*/
100: if ([aPrice isKindOfClass: [NSNumber class]])
101: price = [[NSNumber numberWithDouble:
102: ([aPrice doubleValue] + 10.0)] retain];
103: else price = [[NSNumber numberWithFloat: [aPrice floatValue]] retain];
104:
105:
106: formatString = [NSString stringWithCString: ACCESSOR_SET_TEXT];
107: newString = [NSString stringWithFormat: formatString, sel_getName(_cmd)];
108:
109: [[NXApp delegate] updateObjectView:self];
110: print_trace(@"(1) takeValuesFromDictionary:\n(2) setPrice:\n", isSet);
111: display(newString, isSet);
112:
113: return self;
114: }
115:
116:
117: /*--------------------------------------------------------------------------
118: * Key Value Coding protocol
119: *------------------------------------------------------------------------*/
120: - (BOOL)takeValuesFromDictionary:(NSDictionary *)dictionary
121: {
122: id object, newString;
123: BOOL isSet = YES;
124:
125: [super takeValuesFromDictionary: dictionary];
126:
127: /*--------------------------------------------------------------------------
128: * instance variables were set in the call to super, but could not be
129: * displayed visually. we'll do it now.
130: *------------------------------------------------------------------------*/
131: if ((object = [dictionary objectForKey: @"fullname"])) {
132: newString = [NSString stringWithCString: IVAR_SET_TEXT];
133:
134: [[NXApp delegate] updateObjectView:self];
135: print_trace(
136: @"(1) takeValuesFromDictionary:\n(2) matched instance variable\n",
137: isSet);
138: display(newString, isSet);
139: }
140:
141: /*--------------------------------------------------------------------------
142: * any key/value pairs that are handled outside of the accessor / ivar
143: * paradigm must be handled here.
144: *------------------------------------------------------------------------*/
145: if ((object = [dictionary objectForKey: @"title"])) {
146: volumeTitle = [object retain];
147:
148: newString = [NSString stringWithCString: KVC_SET_TEXT];
149:
150: [[NXApp delegate] updateObjectView:self];
151: print_trace(@"(1) takeValuesFromDictionary:\n",
152: isSet);
153: display(newString, isSet);
154: }
155:
156: print_trace(@"���������\n", isSet);
157: return YES;
158: }
159:
160:
161: - (NSDictionary *)valuesForKeys:(NSArray *)keys
162: {
163: id dictionary, newString;
164: BOOL isSet = NO;
165:
166:
167: dictionary = [super valuesForKeys:keys];
168:
169: /*--------------------------------------------------------------------------
170: * all instance variables were set in a call to super, but could not
171: * be displayed. we'll do it now.
172: *------------------------------------------------------------------------*/
173: if ([keys containsObject: @"fullname"]) {
174: newString = [NSString stringWithCString: IVAR_GET_TEXT];
175: print_trace(@"(1) valuesForKeys:\n(2) matched instance variable\n",
176: isSet);
177: display(newString, isSet);
178: }
179:
180:
181: /*--------------------------------------------------------------------------
182: * any key / value pairs that are not handled via accessors or ivars
183: * can be specially handled here. we'll display that now.
184: *------------------------------------------------------------------------*/
185: if ([keys containsObject: @"title"]) {
186: [dictionary setObject: volumeTitle forKey: @"title"];
187:
188: newString = [NSString stringWithCString: KVC_GET_TEXT];
189:
190: print_trace(@"(1) valuesForKeys:\n", isSet);
191: display(newString, isSet);
192: }
193:
194: print_trace(@"���������\n", isSet);
195:
196: return dictionary;
197: }
198:
199:
200: @end
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