iska
112 lines
2.7 KiB
Objective-C
112 lines
2.7 KiB
Objective-C
//
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// CSSAttributeSelector.m
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// HTMLKit
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//
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// Created by Iska on 14/05/15.
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// Copyright (c) 2015 BrainCookie. All rights reserved.
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//
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#import "CSSAttributeSelector.h"
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#import "HTMLElement.h"
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#import "NSCharacterSet+HTMLKit.h"
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@interface CSSAttributeSelector ()
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{
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CSSAttributeSelectorType _type;
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NSString *_name;
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NSString *_value;
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}
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@end
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@implementation CSSAttributeSelector
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+ (instancetype)classSelector:(NSString *)className
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{
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return [[self alloc] initWithType:CSSAttributeSelectorIncludes attributeName:@"class" attrbiuteValue:className];
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}
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+ (instancetype)idSelector:(NSString *)elementId
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{
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return [[self alloc] initWithType:CSSAttributeSelectorExactMatch attributeName:@"id" attrbiuteValue:elementId];
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}
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+ (instancetype)hasAttributeSelector:(NSString *)attributeName
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{
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return [[self alloc] initWithType:CSSAttributeSelectorExists attributeName:attributeName attrbiuteValue:@""];
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}
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- (instancetype)initWithType:(CSSAttributeSelectorType)type
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attributeName:(NSString *)name
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attrbiuteValue:(NSString *)value
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{
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self = [super init];
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if (self) {
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_type = type;
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_name = [name copy];
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_value = value ? [value copy]: @"";
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}
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return self;
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}
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- (BOOL)acceptElement:(HTMLElement *)element
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{
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switch (_type) {
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case CSSAttributeSelectorExists:
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{
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return !!element[_name];
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}
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case CSSAttributeSelectorExactMatch:
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{
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return [element[_name] isEqualToString:_value];
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}
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case CSSAttributeSelectorIncludes:
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{
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NSArray *components = [element[_name] componentsSeparatedByCharactersInSet:[NSCharacterSet HTMLWhitespaceCharacterSet]];
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return [components containsObject:_value];
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}
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case CSSAttributeSelectorBegins:
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{
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return [element[_name] hasPrefix:_value];
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}
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case CSSAttributeSelectorEnds:
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{
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return [element[_name] hasSuffix:_value];
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}
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case CSSAttributeSelectorContains:
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{
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return [element[_name] containsString:_value];
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}
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case CSSAttributeSelectorHyphen:
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{
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return [element[_name] isEqualToString:_value] || [element[_name] hasPrefix:[_value stringByAppendingString:@"-"]];
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}
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case CSSAttributeSelectorNot:
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{
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return ![element[_name] isEqualToString:_value];
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}
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default:
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return NO;
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}
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}
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#pragma mark - Description
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- (NSString *)debugDescription
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{
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if (self.type == CSSAttributeSelectorExists) {
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return [NSString stringWithFormat:@"[%@]", self.name];
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}
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NSString *matcher = @{@(CSSAttributeSelectorExactMatch): @"=",
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@(CSSAttributeSelectorIncludes): @"~=",
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@(CSSAttributeSelectorBegins): @"^=",
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@(CSSAttributeSelectorEnds): @"$=",
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@(CSSAttributeSelectorContains): @"*=",
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@(CSSAttributeSelectorHyphen): @"|=",
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@(CSSAttributeSelectorNot): @"!="}[@(self.type)];
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return [NSString stringWithFormat:@"[%@%@'%@']", self.name, matcher, self.value];
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}
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@end
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