//
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// MASCompositeConstraint.m
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// Masonry
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//
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// Created by Jonas Budelmann on 21/07/13.
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// Copyright (c) 2013 cloudling. All rights reserved.
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//
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#import "MASCompositeConstraint.h"
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#import "MASConstraint+Private.h"
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@interface MASCompositeConstraint () <MASConstraintDelegate>
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@property (nonatomic, strong) id mas_key;
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@property (nonatomic, strong) NSMutableArray *childConstraints;
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@end
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@implementation MASCompositeConstraint
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- (id)initWithChildren:(NSArray *)children {
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self = [super init];
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if (!self) return nil;
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_childConstraints = [children mutableCopy];
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for (MASConstraint *constraint in _childConstraints) {
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constraint.delegate = self;
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}
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return self;
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}
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#pragma mark - MASConstraintDelegate
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- (void)constraint:(MASConstraint *)constraint shouldBeReplacedWithConstraint:(MASConstraint *)replacementConstraint {
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NSUInteger index = [self.childConstraints indexOfObject:constraint];
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NSAssert(index != NSNotFound, @"Could not find constraint %@", constraint);
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[self.childConstraints replaceObjectAtIndex:index withObject:replacementConstraint];
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}
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- (MASConstraint *)constraint:(MASConstraint __unused *)constraint addConstraintWithLayoutAttribute:(NSLayoutAttribute)layoutAttribute {
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id<MASConstraintDelegate> strongDelegate = self.delegate;
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MASConstraint *newConstraint = [strongDelegate constraint:self addConstraintWithLayoutAttribute:layoutAttribute];
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newConstraint.delegate = self;
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[self.childConstraints addObject:newConstraint];
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return newConstraint;
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}
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#pragma mark - NSLayoutConstraint multiplier proxies
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- (MASConstraint * (^)(CGFloat))multipliedBy {
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return ^id(CGFloat multiplier) {
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for (MASConstraint *constraint in self.childConstraints) {
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constraint.multipliedBy(multiplier);
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}
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return self;
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};
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}
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- (MASConstraint * (^)(CGFloat))dividedBy {
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return ^id(CGFloat divider) {
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for (MASConstraint *constraint in self.childConstraints) {
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constraint.dividedBy(divider);
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}
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return self;
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};
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}
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#pragma mark - MASLayoutPriority proxy
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- (MASConstraint * (^)(MASLayoutPriority))priority {
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return ^id(MASLayoutPriority priority) {
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for (MASConstraint *constraint in self.childConstraints) {
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constraint.priority(priority);
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}
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return self;
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};
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}
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#pragma mark - NSLayoutRelation proxy
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- (MASConstraint * (^)(id, NSLayoutRelation))equalToWithRelation {
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return ^id(id attr, NSLayoutRelation relation) {
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for (MASConstraint *constraint in self.childConstraints.copy) {
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constraint.equalToWithRelation(attr, relation);
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}
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return self;
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};
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}
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#pragma mark - attribute chaining
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- (MASConstraint *)addConstraintWithLayoutAttribute:(NSLayoutAttribute)layoutAttribute {
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[self constraint:self addConstraintWithLayoutAttribute:layoutAttribute];
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return self;
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}
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#pragma mark - Animator proxy
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#if TARGET_OS_MAC && !(TARGET_OS_IPHONE || TARGET_OS_TV)
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- (MASConstraint *)animator {
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for (MASConstraint *constraint in self.childConstraints) {
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[constraint animator];
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}
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return self;
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}
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#endif
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#pragma mark - debug helpers
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- (MASConstraint * (^)(id))key {
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return ^id(id key) {
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self.mas_key = key;
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int i = 0;
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for (MASConstraint *constraint in self.childConstraints) {
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constraint.key([NSString stringWithFormat:@"%@[%d]", key, i++]);
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}
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return self;
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};
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}
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#pragma mark - NSLayoutConstraint constant setters
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- (void)setInsets:(MASEdgeInsets)insets {
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for (MASConstraint *constraint in self.childConstraints) {
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constraint.insets = insets;
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}
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}
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- (void)setOffset:(CGFloat)offset {
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for (MASConstraint *constraint in self.childConstraints) {
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constraint.offset = offset;
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}
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}
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- (void)setSizeOffset:(CGSize)sizeOffset {
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for (MASConstraint *constraint in self.childConstraints) {
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constraint.sizeOffset = sizeOffset;
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}
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}
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- (void)setCenterOffset:(CGPoint)centerOffset {
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for (MASConstraint *constraint in self.childConstraints) {
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constraint.centerOffset = centerOffset;
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}
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}
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#pragma mark - MASConstraint
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- (void)activate {
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for (MASConstraint *constraint in self.childConstraints) {
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[constraint activate];
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}
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}
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- (void)deactivate {
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for (MASConstraint *constraint in self.childConstraints) {
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[constraint deactivate];
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}
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}
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- (void)install {
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for (MASConstraint *constraint in self.childConstraints) {
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constraint.updateExisting = self.updateExisting;
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[constraint install];
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}
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}
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- (void)uninstall {
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for (MASConstraint *constraint in self.childConstraints) {
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[constraint uninstall];
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}
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}
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@end
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