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CalculatorViewController.m
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CalculatorViewController.m
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//
// CalculatorViewController.m
// XenCalc
//
// Created by Quentin Berry on 12/15/15.
// Copyright © 2015 Quentin Berry. All rights reserved.
//
#import "CalculatorViewController.h"
#import "Calculator.h"
@implementation CalculatorViewController
-(void)checkCalculatorState{
if (_calc == nil) {
_calc = [[Calculator alloc] init];
}
}
- (IBAction)clearAll:(id)sender {
_calc.accumulator = 0;
_outputField.stringValue = @"0";
_calc = nil;
}
- (IBAction)plusMinus:(id)sender {
_outputField.doubleValue = _outputField.doubleValue * -1;
}
- (IBAction)percent:(id)sender {
_outputField.doubleValue = _outputField.doubleValue / 100;
}
- (IBAction)decimal:(id)sender {
[self pushNumber:sender];
}
- (IBAction)divide:(id)sender {
[self checkCalculatorState];
_calc.sign = '/';
[self performOperation];
}
- (IBAction)multiply:(id)sender {
[self checkCalculatorState];
_calc.sign = '*';
[self performOperation];
}
- (IBAction)subtract:(id)sender {
[self checkCalculatorState];
_calc.sign = '-';
[self performOperation];
}
- (IBAction)add:(id)sender {
[self checkCalculatorState];
_calc.sign = '+';
[self performOperation];
}
- (IBAction)equals:(id)sender {
[self checkCalculatorState];
NSNumber * result = [NSNumber numberWithDouble:[_calc calculateNewValue:[_outputField doubleValue]]];
[_outputField setStringValue:[result stringValue]];
_calc.calc_state = YES;
}
- (IBAction)numberSeven:(id)sender {
[self pushNumber:sender];
}
- (IBAction)numberEight:(id)sender {
[self pushNumber:sender];
}
- (IBAction)numberNine:(id)sender {
[self pushNumber:sender];
}
- (IBAction)numberFour:(id)sender {
[self pushNumber:sender];
}
- (IBAction)numberFive:(id)sender {
[self pushNumber:sender];
}
- (IBAction)numberSix:(id)sender {
[self pushNumber:sender];
}
- (IBAction)numberOne:(id)sender {
[self pushNumber:sender];
}
- (IBAction)numberTwo:(id)sender {
[self pushNumber:sender];
}
- (IBAction)numberThree:(id)sender {
[self pushNumber:sender];
}
- (IBAction)zero:(id)sender {
[self pushNumber:sender];
}
-(void)pushNumber:(id)sender {
if (_calc.signUsed) {
[_outputField setStringValue:@""];
_calc.signUsed = NO;
}
if ([[_outputField stringValue] compare:@"0"] && !_calc.calc_state)
[_outputField setStringValue:[[_outputField stringValue] stringByAppendingString:[sender title]]];
else
[_outputField setStringValue:[sender title]];
}
-(void)performOperation{
NSNumber * result = [NSNumber numberWithDouble:[_calc calculateNewValue:[_outputField doubleValue]]];
[_outputField setStringValue:[result stringValue]];
_calc.signUsed = YES;
}
@end