/*

File: StrongBox.h

Abstract: declarations for the strong box container

class in this example application.  Strong boxes are

a subclass of Buckets and they can contain trinkets,

treasures, and buckets.

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*/

#import <Cocoa/Cocoa.h>

#import "Bucket.h"

    /* The StrongBox class adds a new property to the Bucket and it is

    also a container for a list of buckets.

    Two points of interest in this class are the weight and value

    accessor methods that we use to implement the weight and value

    AppleScript properties.  These accessors implement read only

    properties and they return a calculated result reflecting the sum

    total of the weights of all of the items contained in the strong box.

    We take care of most of the 'infrastructure' type operations

    needed for scripting in the Element class (the superclass of the

    Trinket class), so all we have to worry about here is storage management

    and providing accessors for the properties.*/

@interface StrongBox : Bucket {

    NSString *label;

    NSMutableArray *theBuckets;

}

    /* storage management */

-(id) init;

- (void) dealloc;

    /* kvc method for the 'weight' AppleScript property.  Note that here we

    are providing a specialization of the weight method provided by the Bucket

    class.  We do this because when calculating the weight of all of the objects

    in the strong box, we want to include the total weight of all of the buckets

    it contains, so we perform that extra calculation in this specialization.

    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;

    /* kvc method for the 'value' AppleScript property.  Here we are also

    providing a specialization of the weight method provided by the Bucket class

    for exactly the same reasons: to factor in the value of all of the buckets

    contained in the strong box.  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;

    /* kvc methods for the 'label' AppleScript property */

- (NSString *)label;

- (void)setLabel:(NSString *)value;

    /* kvc methods for the 'buckets' AppleScript element.  Here we implement the methods

    necessary for maintaining the list of buckets inside of a StrongBox.  Note the names.

    I our scripting definition file we specified that the 'strong box' class contains an

    element of type 'bucket', like so:

        <element type="bucket"/>

    Cocoa will use the plural form of the class name 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*) buckets;

        -(void) insertInBuckets:(id) bucket;

        -(void) insertInBuckets:(id) bucket atIndex:(unsigned)index;

        -(void) removeFromBucketsAtIndex:(unsigned)index;

    */

    /* return the entire list of buckets */

- (NSArray*) buckets;

    /* insert a bucket at the beginning of the list */

-(void) insertInBuckets:(id) bucket;

    /* insert a bucket at some position in the list */

-(void) insertInBuckets:(id) bucket atIndex:(unsigned)index;

    /* remove a bucket from the list */

-(void) removeFromBucketsAtIndex:(unsigned)index;

/*

Note that if we had wanted to use a different name in our Objective-C code as our

property accessor, say, 'bucketsInStrongBox', then we would have specified that

in our scripting definition file with an element declaration such as:

        <element type="bucket">

            <cocoa key="bucketsInStrongBox"/>

        </element>

and then we would have named our methods for maintaining the list of buckets like so:

    - (NSArray*) bucketsInStrongBox;

    -(void) insertInBucketsInStrongBox:(id) bucket;

    -(void) insertInBucketsInStrongBox:(id) bucket atIndex:(unsigned)index;

    -(void) removeFromBucketsInStrongBoxAtIndex:(unsigned)index;

*/

@end