/
PMValidationLengthType.m
91 lines (64 loc) · 2.35 KB
/
PMValidationLengthType.m
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//
// PMValidationLengthType.m
//
//
// Created by Brett Walker on 6/9/12.
// Copyright (c) 2012-2016 Poet & Mountain, LLC. All rights reserved.
//
#import "PMValidationLengthType.h"
@implementation PMValidationLengthType
NSString *const kPMValidationStatusMinimumLengthError = @"PMValidationStatusMinimumLengthError";
NSString *const kPMValidationStatusMaximumLengthError = @"PMValidationStatusMaximumLengthError";
NSInteger const kPMValidationIgnoreLengthConstraint = -1;
- (instancetype)init {
self = [super init];
if (self) {
self.minimumCharacters = kPMValidationIgnoreLengthConstraint;
self.maximumCharacters = kPMValidationIgnoreLengthConstraint;
}
return self;
}
// returns a new instance of PMValidationLengthType
+ (instancetype) validator {
PMValidationLengthType *val = [[PMValidationLengthType alloc] init];
val.minimumCharacters = kPMValidationIgnoreLengthConstraint;
val.maximumCharacters = kPMValidationIgnoreLengthConstraint;
return val;
}
- (BOOL)isTextValid:(NSString *)text {
BOOL min_valid = YES;
BOOL max_valid = YES;
if (self.minimumCharacters == kPMValidationIgnoreLengthConstraint) {
min_valid = YES;
} else if (self.minimumCharacters >= 0) {
(text.length >= self.minimumCharacters) ? (min_valid = YES) : (min_valid = NO);
}
if (self.maximumCharacters == kPMValidationIgnoreLengthConstraint) {
max_valid = YES;
// if max is less than min, the max constraint is ignored
} else if (self.maximumCharacters >= 0 && self.maximumCharacters >= self.minimumCharacters) {
(text.length <= self.maximumCharacters) ? (max_valid = YES) : (max_valid = NO);
}
if (min_valid && max_valid) {
self.isValid = YES;
} else {
self.isValid = NO;
}
// update states
[self.validationStates removeAllObjects];
if (self.isValid) {
[self.validationStates addObject:kPMValidationStatusValid];
} else {
if (!min_valid) {
[self.validationStates addObject:kPMValidationStatusMinimumLengthError];
}
if (!max_valid) {
[self.validationStates addObject:kPMValidationStatusMaximumLengthError];
}
}
return self.isValid;
}
+ (NSString *)type {
return @"PMValidationTypeLength";
}
@end