my obj-c dabblings

Author: defunkt

.gitignore

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+.DS_Store
+build/*

APPL.icns

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+//
+//  Converter.h
+//  Currency Converter
+//
+//  Created by Chris Wanstrath on 4/22/08.
+//  Copyright 2008 __MyCompanyName__. All rights reserved.
+//
+
+#import <Cocoa/Cocoa.h>
+
+
+@interface Converter : NSObject {
+    float sourceCurrencyAmount, rate;
+    NSString* symbol;
+}
+
+@property(readwrite) float sourceCurrencyAmount, rate;
+@property(readwrite, retain) NSString* symbol;
+- (float)convertCurrency;
+- (void)setCurrency:(NSString*)currency;
+@end

Converter.h

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+//
+//  Converter.m
+//  Currency Converter
+//
+//  Created by Chris Wanstrath on 4/22/08.
+//  Copyright 2008 __MyCompanyName__. All rights reserved.
+//
+
+#import "Converter.h"
+
+@implementation Converter
+@synthesize sourceCurrencyAmount, rate, symbol;
+
+- (float)convertCurrency {
+    return self.sourceCurrencyAmount / self.rate;
+}
+
+- (void)setCurrency:(NSString*)currency {
+    if ([currency isEqualToString:@"Euros"]) {
+        self.symbol = @"€";
+        self.rate = 1.5884;
+    } else if ([currency isEqualToString:@"Pesos"]) {
+        self.symbol = @"$";
+        self.rate = 0.095578;
+    } else if ([currency isEqualToString:@"Yen"]) {
+        self.symbol = @"¥";
+        self.rate = 0.009674;
+    }
+}
+@end

Converter.m

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+//
+//  ConverterController.h
+//  Currency Converter
+//
+//  Created by Chris Wanstrath on 4/22/08.
+//  Copyright 2008 __MyCompanyName__. All rights reserved.
+//
+
+#import <Cocoa/Cocoa.h>
+#import "Converter.h"
+
+@interface ConverterController : NSObject {
+    IBOutlet NSTextField *amountField;
+    
+    IBOutlet NSTextField *dollarField;
+    
+    IBOutlet NSPopUpButton *ratePopUp;
+    
+    IBOutlet NSButton *convertButton;
+    
+    Converter *converter;
+}
+
+-(id)init;
+
+-(void)convert;
+-(IBAction)convert:(id)sender;
+
+-(IBAction)switchObject:(id)sender;
+
+- (void)controlTextDidChange:(NSNotification *)aNotification;
+
+@end

ConverterController.h

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+//
+//  ConverterController.m
+//  Currency Converter
+//
+//  Created by Chris Wanstrath on 4/22/08.
+//  Copyright 2008 __MyCompanyName__. All rights reserved.
+//
+
+#import "ConverterController.h"
+
+@implementation ConverterController
+-(id)init {
+    converter = [[Converter alloc] init];
+    return [super init];
+}
+
+-(void)convert {
+    [self convert:nil];
+}
+
+-(IBAction)convert:(id)sender {
+    converter.sourceCurrencyAmount = [dollarField floatValue];
+    
+    NSString* amount = converter.symbol;
+    amount = [amount stringByAppendingFormat:@"%.02f", [converter convertCurrency]];
+    
+    [amountField setStringValue:amount];
+}
+
+-(IBAction)switchObject:(id)sender {
+    [converter setCurrency:[sender titleOfSelectedItem]];
+    if ([dollarField floatValue] > 0) [self convert];
+}
+
+
+- (void)controlTextDidChange:(NSNotification *)aNotification {
+    if ([dollarField floatValue] <= 0) [amountField setIntValue:0];
+    else if ([dollarField floatValue] > 0 && converter.rate > 0) [self convert];
+}
+@end