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- /* Objective_C Implementation of the Fruit Class: Fruit.m */
-
- #import "Fruit.h"
-
- @implementation Fruit : Object
-
- /* Initialize a new fruit. */
- -init
- {
- [super init]; // do Object's init. Now my own:
- [self setDiameter:1]; // init the diameter
- [self setColor:"green"]; // init the color
- return self; // return the new instance
- }
-
- /* Action method for setting the color of the fruit. */
- -takeColorFrom:sender
- {
- [self setColor:[sender stringValue]];
- return self;
- }
-
- /* Set the color of the fruit. */
- -setColor:(const char*)aColor
- {
- color = aColor;
- return self;
- }
-
- /* Return the fruit's color. */
- - (const char*)color
- {
- return color;
- }
-
- /* Action method for setting the diameter of the fruit. */
- -takeDiameterFrom:sender
- {
- [self setDiameter:[sender intValue]];
- return self;
- }
-
- /* Set the fruit's diameter. */
- -setDiameter: (int) aSize
- {
- diameter = aSize;
- return self;
- }
-
- /* Return the fruit's diameter. */
- - (int) diameter
- {
- return diameter;
- }
-
- /* Tell the fruit to increase its diameter. */
- - grow:sender
- {
- [self setDiameter:([self diameter] + 1)];
- return self;
- }
-
- - displayValues:sender
- {
- [colorDisplay setStringValue:color];
- [diameterDisplay setIntValue:diameter];
- return self;
- }
-
- @end
-