//
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// MASConstraint.m
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// Masonry
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//
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// Created by Nick Tymchenko on 1/20/14.
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//
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#import "MASConstraint.h"
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#import "MASConstraint+Private.h"
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#define MASMethodNotImplemented() \
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@throw [NSException exceptionWithName:NSInternalInconsistencyException \
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reason:[NSString stringWithFormat:@"You must override %@ in a subclass.", NSStringFromSelector(_cmd)] \
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userInfo:nil]
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@implementation MASConstraint
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#pragma mark - Init
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- (id)init {
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NSAssert(![self isMemberOfClass:[MASConstraint class]], @"MASConstraint is an abstract class, you should not instantiate it directly.");
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return [super init];
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}
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#pragma mark - NSLayoutRelation proxies
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- (MASConstraint * (^)(id))equalTo {
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return ^id(id attribute) {
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return self.equalToWithRelation(attribute, NSLayoutRelationEqual);
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};
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}
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- (MASConstraint * (^)(id))mas_equalTo {
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return ^id(id attribute) {
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return self.equalToWithRelation(attribute, NSLayoutRelationEqual);
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};
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}
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- (MASConstraint * (^)(id))greaterThanOrEqualTo {
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return ^id(id attribute) {
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return self.equalToWithRelation(attribute, NSLayoutRelationGreaterThanOrEqual);
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};
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}
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- (MASConstraint * (^)(id))mas_greaterThanOrEqualTo {
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return ^id(id attribute) {
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return self.equalToWithRelation(attribute, NSLayoutRelationGreaterThanOrEqual);
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};
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}
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- (MASConstraint * (^)(id))lessThanOrEqualTo {
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return ^id(id attribute) {
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return self.equalToWithRelation(attribute, NSLayoutRelationLessThanOrEqual);
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};
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}
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- (MASConstraint * (^)(id))mas_lessThanOrEqualTo {
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return ^id(id attribute) {
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return self.equalToWithRelation(attribute, NSLayoutRelationLessThanOrEqual);
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};
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}
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#pragma mark - MASLayoutPriority proxies
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- (MASConstraint * (^)())priorityLow {
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return ^id{
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self.priority(MASLayoutPriorityDefaultLow);
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return self;
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};
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}
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- (MASConstraint * (^)())priorityMedium {
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return ^id{
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self.priority(MASLayoutPriorityDefaultMedium);
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return self;
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};
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}
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- (MASConstraint * (^)())priorityHigh {
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return ^id{
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self.priority(MASLayoutPriorityDefaultHigh);
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return self;
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};
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}
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#pragma mark - NSLayoutConstraint constant proxies
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- (MASConstraint * (^)(MASEdgeInsets))insets {
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return ^id(MASEdgeInsets insets){
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self.insets = insets;
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return self;
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};
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}
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- (MASConstraint * (^)(CGSize))sizeOffset {
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return ^id(CGSize offset) {
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self.sizeOffset = offset;
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return self;
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};
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}
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- (MASConstraint * (^)(CGPoint))centerOffset {
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return ^id(CGPoint offset) {
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self.centerOffset = offset;
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return self;
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};
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}
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- (MASConstraint * (^)(CGFloat))offset {
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return ^id(CGFloat offset){
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self.offset = offset;
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return self;
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};
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}
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- (MASConstraint * (^)(NSValue *value))valueOffset {
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return ^id(NSValue *offset) {
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NSAssert([offset isKindOfClass:NSValue.class], @"expected an NSValue offset, got: %@", offset);
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[self setLayoutConstantWithValue:offset];
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return self;
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};
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}
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- (MASConstraint * (^)(id offset))mas_offset {
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// Will never be called due to macro
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return nil;
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}
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#pragma mark - NSLayoutConstraint constant setter
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- (void)setLayoutConstantWithValue:(NSValue *)value {
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if ([value isKindOfClass:NSNumber.class]) {
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self.offset = [(NSNumber *)value doubleValue];
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} else if (strcmp(value.objCType, @encode(CGPoint)) == 0) {
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CGPoint point;
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[value getValue:&point];
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self.centerOffset = point;
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} else if (strcmp(value.objCType, @encode(CGSize)) == 0) {
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CGSize size;
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[value getValue:&size];
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self.sizeOffset = size;
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} else if (strcmp(value.objCType, @encode(MASEdgeInsets)) == 0) {
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MASEdgeInsets insets;
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[value getValue:&insets];
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self.insets = insets;
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} else {
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NSAssert(NO, @"attempting to set layout constant with unsupported value: %@", value);
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}
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}
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#pragma mark - Semantic properties
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- (MASConstraint *)with {
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return self;
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}
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- (MASConstraint *)and {
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return self;
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}
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#pragma mark - Chaining
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- (MASConstraint *)addConstraintWithLayoutAttribute:(NSLayoutAttribute __unused)layoutAttribute {
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MASMethodNotImplemented();
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}
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- (MASConstraint *)left {
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return [self addConstraintWithLayoutAttribute:NSLayoutAttributeLeft];
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}
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- (MASConstraint *)top {
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return [self addConstraintWithLayoutAttribute:NSLayoutAttributeTop];
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}
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- (MASConstraint *)right {
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return [self addConstraintWithLayoutAttribute:NSLayoutAttributeRight];
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}
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- (MASConstraint *)bottom {
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return [self addConstraintWithLayoutAttribute:NSLayoutAttributeBottom];
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}
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- (MASConstraint *)leading {
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return [self addConstraintWithLayoutAttribute:NSLayoutAttributeLeading];
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}
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- (MASConstraint *)trailing {
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return [self addConstraintWithLayoutAttribute:NSLayoutAttributeTrailing];
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}
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- (MASConstraint *)width {
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return [self addConstraintWithLayoutAttribute:NSLayoutAttributeWidth];
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}
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- (MASConstraint *)height {
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return [self addConstraintWithLayoutAttribute:NSLayoutAttributeHeight];
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}
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- (MASConstraint *)centerX {
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return [self addConstraintWithLayoutAttribute:NSLayoutAttributeCenterX];
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}
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- (MASConstraint *)centerY {
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return [self addConstraintWithLayoutAttribute:NSLayoutAttributeCenterY];
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}
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- (MASConstraint *)baseline {
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return [self addConstraintWithLayoutAttribute:NSLayoutAttributeBaseline];
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}
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#if (__IPHONE_OS_VERSION_MIN_REQUIRED >= 80000) || (__TV_OS_VERSION_MIN_REQUIRED >= 9000) || (__MAC_OS_X_VERSION_MIN_REQUIRED >= 101100)
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- (MASConstraint *)firstBaseline {
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return [self addConstraintWithLayoutAttribute:NSLayoutAttributeFirstBaseline];
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}
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- (MASConstraint *)lastBaseline {
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return [self addConstraintWithLayoutAttribute:NSLayoutAttributeLastBaseline];
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}
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#endif
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#if TARGET_OS_IPHONE || TARGET_OS_TV
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- (MASConstraint *)leftMargin {
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return [self addConstraintWithLayoutAttribute:NSLayoutAttributeLeftMargin];
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}
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- (MASConstraint *)rightMargin {
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return [self addConstraintWithLayoutAttribute:NSLayoutAttributeRightMargin];
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}
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- (MASConstraint *)topMargin {
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return [self addConstraintWithLayoutAttribute:NSLayoutAttributeTopMargin];
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}
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- (MASConstraint *)bottomMargin {
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return [self addConstraintWithLayoutAttribute:NSLayoutAttributeBottomMargin];
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}
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- (MASConstraint *)leadingMargin {
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return [self addConstraintWithLayoutAttribute:NSLayoutAttributeLeadingMargin];
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}
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- (MASConstraint *)trailingMargin {
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return [self addConstraintWithLayoutAttribute:NSLayoutAttributeTrailingMargin];
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}
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- (MASConstraint *)centerXWithinMargins {
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return [self addConstraintWithLayoutAttribute:NSLayoutAttributeCenterXWithinMargins];
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}
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- (MASConstraint *)centerYWithinMargins {
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return [self addConstraintWithLayoutAttribute:NSLayoutAttributeCenterYWithinMargins];
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}
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#endif
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#pragma mark - Abstract
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- (MASConstraint * (^)(CGFloat multiplier))multipliedBy { MASMethodNotImplemented(); }
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- (MASConstraint * (^)(CGFloat divider))dividedBy { MASMethodNotImplemented(); }
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- (MASConstraint * (^)(MASLayoutPriority priority))priority { MASMethodNotImplemented(); }
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- (MASConstraint * (^)(id, NSLayoutRelation))equalToWithRelation { MASMethodNotImplemented(); }
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- (MASConstraint * (^)(id key))key { MASMethodNotImplemented(); }
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- (void)setInsets:(MASEdgeInsets __unused)insets { MASMethodNotImplemented(); }
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- (void)setSizeOffset:(CGSize __unused)sizeOffset { MASMethodNotImplemented(); }
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- (void)setCenterOffset:(CGPoint __unused)centerOffset { MASMethodNotImplemented(); }
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- (void)setOffset:(CGFloat __unused)offset { MASMethodNotImplemented(); }
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#if TARGET_OS_MAC && !(TARGET_OS_IPHONE || TARGET_OS_TV)
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- (MASConstraint *)animator { MASMethodNotImplemented(); }
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#endif
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- (void)activate { MASMethodNotImplemented(); }
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- (void)deactivate { MASMethodNotImplemented(); }
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- (void)install { MASMethodNotImplemented(); }
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- (void)uninstall { MASMethodNotImplemented(); }
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@end
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