82 lines
1.8 KiB
Objective-C
82 lines
1.8 KiB
Objective-C
//
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// MPDocument.m
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// MathPad
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//
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// Created by Kim Wittenburg on 23.03.14.
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// Copyright (c) 2014 Kim Wittenburg. All rights reserved.
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//
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#import "MPDocument.h"
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@implementation MPDocument {
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MPExpression *loadedExpression;
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}
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- (id)init
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{
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self = [super init];
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if (self) {
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// Add your subclass-specific initialization here.
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}
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return self;
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}
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- (NSString *)windowNibName
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{
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return @"MPDocument";
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}
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- (void)windowControllerDidLoadNib:(NSWindowController *)aController
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{
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[super windowControllerDidLoadNib:aController];
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self.expressionView.target = self;
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self.expressionView.action = @selector(evaluateExpression:);
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if (loadedExpression) {
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[self.expressionView.expressionStorage appendElements:[loadedExpression allItemsInReferenceFrame:MPElementReferenceFrame]];
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}
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}
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+ (BOOL)autosavesInPlace
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{
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return YES;
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}
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- (NSData *)dataOfType:(NSString *)typeName error:(NSError **)outError
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{
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return [NSKeyedArchiver archivedDataWithRootObject:self.expressionView.expressionStorage];
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}
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- (BOOL)readFromData:(NSData *)data ofType:(NSString *)typeName error:(NSError **)outError
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{
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MPExpression *expression = [NSKeyedUnarchiver unarchiveObjectWithData:data];
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loadedExpression = expression;
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return YES;
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}
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#pragma mark Actions
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- (IBAction)evaluateExpression:(id)sender {
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NSArray *errors;
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MPParsedExpression *parsedExpression = [self.expressionView.expressionStorage parse:&errors];
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NSError *mathError;
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NSDecimalNumber *result;
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if (parsedExpression) {
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result = [parsedExpression evaluate:&mathError];
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}
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self.expressionView.syntaxErrors = errors;
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self.expressionView.mathError = mathError;
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self.resultLabel.stringValue = result != nil ? [result descriptionWithLocale:[NSLocale currentLocale]] : @"";
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}
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@end
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