96 lines
4.5 KiB
Objective-C
96 lines
4.5 KiB
Objective-C
//
|
|
// MPMathRules.m
|
|
// MathPad
|
|
//
|
|
// Created by Kim Wittenburg on 14.09.14.
|
|
// Copyright (c) 2014 Kim Wittenburg. All rights reserved.
|
|
//
|
|
|
|
#import "MPMathRules.h"
|
|
|
|
NSString *MPMathRulesAllowsImplicitMultiplicationKey = @"MPMathRulesAllowsImplicitMultiplicationKey";
|
|
NSString *MPMathRulesMaximumOperatorChainLengthKey = @"MPMathRulesMaximumOperatorChainLengthKey";
|
|
NSString *MPMathRulesMaximumOperatorChainLengthInMultiplicationKey = @"MPMathRulesMaximumOperatorChainLengthInMultiplicationKey";
|
|
NSString *MPMathRulesMaximumOperatorChainLengthInFunctionKey = @"MPMathRulesMaximumOperatorChainLengthInFunctionKey";
|
|
|
|
@implementation MPMathRules
|
|
|
|
static MPMathRules *sharedRules;
|
|
|
|
+ (MPMathRules *)sharedRules
|
|
{
|
|
if (!sharedRules) {
|
|
sharedRules = [[MPMathRules alloc] init];
|
|
}
|
|
return sharedRules;
|
|
}
|
|
|
|
- (instancetype)init
|
|
{
|
|
if (sharedRules) {
|
|
return sharedRules;
|
|
}
|
|
self = [super init];
|
|
if (self) {
|
|
_usingUserDefaultValues = YES;
|
|
NSNumber *userDefaultsAllowImplicitMultiplication = [[NSUserDefaults standardUserDefaults] objectForKey:MPMathRulesAllowsImplicitMultiplicationKey];
|
|
NSNumber *userDefaultsMaximumOperatorChainLength = [[NSUserDefaults standardUserDefaults] objectForKey:MPMathRulesMaximumOperatorChainLengthKey];
|
|
NSNumber *userDefaultsMaximumOperatorChainLengthInMultiplication = [[NSUserDefaults standardUserDefaults] objectForKey:MPMathRulesMaximumOperatorChainLengthInMultiplicationKey];
|
|
NSNumber *userDefaultsMaximumOperatorChainLengthInFunction = [[NSUserDefaults standardUserDefaults] objectForKey:MPMathRulesMaximumOperatorChainLengthInFunctionKey];
|
|
|
|
_allowsImplicitMultiplication = userDefaultsAllowImplicitMultiplication != nil ? userDefaultsAllowImplicitMultiplication.boolValue : NO;
|
|
_maximumOperatorChainLength = userDefaultsMaximumOperatorChainLength != nil ? userDefaultsMaximumOperatorChainLength.unsignedIntegerValue : 2;
|
|
_maximumOperatorChainLengthInMultiplication = userDefaultsMaximumOperatorChainLengthInMultiplication != nil ? userDefaultsMaximumOperatorChainLengthInMultiplication.unsignedIntegerValue : 1;
|
|
_maximumOperatorChainLengthInFunction = userDefaultsMaximumOperatorChainLengthInFunction != nil ? userDefaultsMaximumOperatorChainLengthInFunction.unsignedIntegerValue : 1;
|
|
}
|
|
return self;
|
|
}
|
|
|
|
- (void)setUsingUserDefaultValues:(BOOL)usingUserDefaultValues
|
|
{
|
|
_usingUserDefaultValues = usingUserDefaultValues;
|
|
// Save the current values
|
|
self.allowsImplicitMultiplication = self.allowsImplicitMultiplication;
|
|
self.maximumOperatorChainLength = self.maximumOperatorChainLength;
|
|
self.maximumOperatorChainLengthInMultiplication = self.maximumOperatorChainLengthInMultiplication;
|
|
self.maximumOperatorChainLengthInFunction = self.maximumOperatorChainLengthInFunction;
|
|
}
|
|
|
|
- (void)setAllowsImplicitMultiplication:(BOOL)allowsImplicitMultiplication
|
|
{
|
|
_allowsImplicitMultiplication = allowsImplicitMultiplication;
|
|
if (self.isUsingUserDefaultValues) {
|
|
[[NSUserDefaults standardUserDefaults] setBool:allowsImplicitMultiplication
|
|
forKey:MPMathRulesAllowsImplicitMultiplicationKey];
|
|
}
|
|
}
|
|
|
|
- (void)setMaximumOperatorChainLength:(NSUInteger)maximumOperatorChainLength
|
|
{
|
|
_maximumOperatorChainLength = maximumOperatorChainLength;
|
|
if (self.isUsingUserDefaultValues) {
|
|
[[NSUserDefaults standardUserDefaults] setObject:[NSNumber numberWithUnsignedInteger:maximumOperatorChainLength]
|
|
forKey:MPMathRulesMaximumOperatorChainLengthKey];
|
|
}
|
|
}
|
|
|
|
- (void)setMaximumOperatorChainLengthInMultiplication:(NSUInteger)maximumOperatorChainLengthInMultiplication
|
|
{
|
|
_maximumOperatorChainLengthInMultiplication = maximumOperatorChainLengthInMultiplication;
|
|
if (self.isUsingUserDefaultValues) {
|
|
[[NSUserDefaults standardUserDefaults] setObject:[NSNumber numberWithUnsignedInteger:maximumOperatorChainLengthInMultiplication]
|
|
forKey:MPMathRulesMaximumOperatorChainLengthInMultiplicationKey];
|
|
}
|
|
}
|
|
|
|
- (void)setMaximumOperatorChainLengthInFunction:(NSUInteger)maximumOperatorChainLengthInFunction
|
|
{
|
|
_maximumOperatorChainLengthInFunction = maximumOperatorChainLengthInFunction;
|
|
if (self.isUsingUserDefaultValues) {
|
|
[[NSUserDefaults standardUserDefaults] setObject:[NSNumber numberWithUnsignedInteger:maximumOperatorChainLengthInFunction]
|
|
forKey:MPMathRulesMaximumOperatorChainLengthInFunctionKey];
|
|
}
|
|
}
|
|
|
|
@end
|