Bucket.m
/* |
File: Bucket.m |
Abstract: declarations for the bucket container |
class in this example application. Buckets can |
contain trinkets and treasures. |
Version: 1.0 |
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*/ |
#import "Bucket.h" |
#import "Trinket.h" |
#import "Treasure.h" |
#import "scriptLog.h" |
@implementation Bucket |
/* after initializing our superclasses, we set the properties we're |
maintaining in this class to their default values. Here I have chosen |
to initialize the label field to a unique string using a counter. |
See the description of the NSCreateCommand for more information about |
when your init method will be called. */ |
-(id) init { |
if ((self = [super init]) != nil) { |
theTrinkets = [[NSMutableArray alloc] init]; |
theTreasures = [[NSMutableArray alloc] init]; |
} |
/* I put the logging statement later after the superclass was initialized |
so we will be able to report the uniqueID */ |
SLOG(@"init bucket %@", [self uniqueID]); |
return self; |
} |
/* standard deallocation of our members followed by superclass. |
nothing out of the ordinary here. */ |
- (void) dealloc { |
SLOG(@"dealloc bucket %@", [self uniqueID]); |
[theTrinkets release]; |
[theTreasures release]; |
[super dealloc]; |
} |
/* kvc method for the 'weight' AppleScript property. Note that rather |
than simply returning a value, this method calculates its result by |
summing the weights of all of the trinkets and treasures contained |
in the bucket. |
Also note, 'weight' is a declared as a read only property in our scripting |
definition file so we have not defined a 'setWeight:' method here. */ |
- (NSNumber *)weight { |
double totalWeight = 0.0; |
NSEnumerator *trinketEnumerator = [theTrinkets objectEnumerator]; |
NSEnumerator *treasureEnumerator = [theTreasures objectEnumerator]; |
Trinket* nthTrinket; |
Treasure* nthTreasure; |
NSNumber *theResult; |
/* sum the weights of all of the trinkets in the bucket */ |
while ( (nthTrinket = (Trinket*) [trinketEnumerator nextObject]) != nil ) { |
totalWeight += [[nthTrinket weight] doubleValue]; |
} |
/* sum the weights of all of the treasures in the bucket */ |
while ( (nthTreasure = (Treasure*) [treasureEnumerator nextObject]) != nil ) { |
totalWeight += [[nthTreasure weight] doubleValue]; |
} |
/* return the calculated weight */ |
theResult = [NSNumber numberWithDouble:totalWeight]; |
SLOG(@"weight of bucket %@ = %@", [self uniqueID], theResult); |
return theResult; |
} |
/* kvc method for the 'value' AppleScript property. Here also rather |
than simply returning a value, this method calculates its result by |
summing the values of all of the treasures contained in the bucket. |
And, as with the 'weight' property, 'value' is a declared as a read |
only property in our scripting definition file so we have not |
defined a 'setValue:' method here. */ |
- (NSNumber *)value { |
double totalValue = 0.0; |
NSEnumerator *treasureEnumerator = [theTreasures objectEnumerator]; |
Treasure* nthTreasure; |
NSNumber *theResult; |
/* sum the values of all of the treasures in the bucket */ |
while ( (nthTreasure = (Treasure*) [treasureEnumerator nextObject]) != nil ) { |
totalValue += [[nthTreasure value] doubleValue]; |
} |
theResult = [NSNumber numberWithDouble:totalValue]; |
SLOG(@"value of bucket %@ = %@", [self uniqueID], theResult); |
return theResult; |
} |
/* kvc methods for the 'trinkets' AppleScript element. Here we implement the methods |
necessary for maintaining the list of trinkets inside of a Bucket. Note the names. |
I our scripting definition file we specified that the 'bucket' class contains an |
element of type 'trinket', like so: |
<element type="trinket"/> |
Cocoa will use the plural form of the class name, 'trinkets', when naming the |
property used by AppleScript to access the list of buckets, and we should use |
the property name when naming our methods. So, using the property name, we |
name our methods as follows: |
- (NSArray *)trinkets; |
- (void)insertInTrinkets:(id)trinket; |
- (void)insertInTrinkets:(id)trinket atIndex:(unsigned)index; |
- (void)removeFromTrinketsAtIndex:(unsigned)index; |
*/ |
/* return the entire list of trinkets */ |
- (NSArray*)trinkets { |
SLOG(@"returning trinkets from a bucket %@", [self uniqueID]); |
return theTrinkets; |
} |
/* insert a trinket at the beginning of the list */ |
- (void)insertInTrinkets:(id)trinket { |
SLOG(@"inserting trinket %@ into bucket %@", [((Trinket*)trinket) uniqueID], [self uniqueID]); |
[trinket setContainer:self andProperty:@"trinkets"]; |
[theTrinkets insertObject:trinket atIndex:0]; |
} |
/* insert a trinket at some position in the list */ |
- (void)insertInTrinkets:(id)trinket atIndex:(unsigned)index { |
SLOG(@"insert trinket %@ at index %d into bucket %@", [((Trinket*)trinket) uniqueID], index, [self uniqueID]); |
[trinket setContainer:self andProperty:@"trinkets"]; |
[theTrinkets insertObject:trinket atIndex:0]; |
} |
/* remove a trinket from the list */ |
- (void)removeFromTrinketsAtIndex:(unsigned)index { |
SLOG(@"removing trinket at %d from bucket %@", index, [self uniqueID]); |
[theTrinkets removeObjectAtIndex:index]; |
} |
/* kvc methods for the 'treasure' AppleScript element. Here we implement the methods |
necessary for maintaining the list of trinkets inside of a Bucket. Note the names. |
I our scripting definition file we specified that the 'bucket' class contains an |
element of type 'treasure', like so: |
<element type="treasure"/> |
Cocoa will use the plural form of the class name, 'treasures', when naming the |
property used by AppleScript to access the list of buckets, and we should use |
the property name when naming our methods. So, using the property name, we |
name our methods as follows: |
- (NSArray*) treasures; |
-(void) insertInTreasures:(id) treasure; |
-(void) insertInTreasures:(id) treasure atIndex:(unsigned)index; |
-(void) removeFromTreasuresAtIndex:(unsigned)index; |
*/ |
/* return the entire list of treasures */ |
- (NSArray*) treasures { |
SLOG(@"returning treasures from a bucket %@", [self uniqueID]); |
return theTreasures; |
} |
/* insert a treasure at the beginning of the list */ |
-(void) insertInTreasures:(id) treasure { |
SLOG(@"inserting treasure %@ into bucket %@", [((Treasure*)treasure) uniqueID], [self uniqueID]); |
[treasure setContainer:self andProperty:@"treasures"]; |
[theTreasures insertObject:treasure atIndex:0]; |
} |
/* insert a treasure at some position in the list */ |
-(void) insertInTreasures:(id) treasure atIndex:(unsigned)index { |
SLOG(@"insert treasure %@ at index %d into bucket %@", [((Treasure*)treasure) uniqueID], index, [self uniqueID]); |
[treasure setContainer:self andProperty:@"treasures"]; |
[theTreasures insertObject:treasure atIndex:0]; |
} |
/* remove a treasure from the list */ |
-(void) removeFromTreasuresAtIndex:(unsigned)index { |
SLOG(@"removing treasure at %d from bucket %@", index, [self uniqueID]); |
[theTreasures removeObjectAtIndex:index]; |
} |
@end |
Copyright © 2009 Apple Inc. All Rights Reserved. Terms of Use | Privacy Policy | Updated: 2009-05-11