//
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// NSArray+MASAdditions.m
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//
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//
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// Created by Daniel Hammond on 11/26/13.
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//
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//
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#import "NSArray+MASAdditions.h"
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#import "View+MASAdditions.h"
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@implementation NSArray (MASAdditions)
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- (NSArray *)mas_makeConstraints:(void(^)(MASConstraintMaker *make))block {
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NSMutableArray *constraints = [NSMutableArray array];
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for (MAS_VIEW *view in self) {
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NSAssert([view isKindOfClass:[MAS_VIEW class]], @"All objects in the array must be views");
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[constraints addObjectsFromArray:[view mas_makeConstraints:block]];
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}
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return constraints;
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}
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- (NSArray *)mas_updateConstraints:(void(^)(MASConstraintMaker *make))block {
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NSMutableArray *constraints = [NSMutableArray array];
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for (MAS_VIEW *view in self) {
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NSAssert([view isKindOfClass:[MAS_VIEW class]], @"All objects in the array must be views");
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[constraints addObjectsFromArray:[view mas_updateConstraints:block]];
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}
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return constraints;
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}
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- (NSArray *)mas_remakeConstraints:(void(^)(MASConstraintMaker *make))block {
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NSMutableArray *constraints = [NSMutableArray array];
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for (MAS_VIEW *view in self) {
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NSAssert([view isKindOfClass:[MAS_VIEW class]], @"All objects in the array must be views");
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[constraints addObjectsFromArray:[view mas_remakeConstraints:block]];
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}
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return constraints;
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}
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- (void)mas_distributeViewsAlongAxis:(MASAxisType)axisType withFixedSpacing:(CGFloat)fixedSpacing leadSpacing:(CGFloat)leadSpacing tailSpacing:(CGFloat)tailSpacing {
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if (self.count < 2) {
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NSAssert(self.count>1,@"views to distribute need to bigger than one");
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return;
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}
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MAS_VIEW *tempSuperView = [self mas_commonSuperviewOfViews];
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if (axisType == MASAxisTypeHorizontal) {
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MAS_VIEW *prev;
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for (int i = 0; i < self.count; i++) {
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MAS_VIEW *v = self[i];
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[v mas_makeConstraints:^(MASConstraintMaker *make) {
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if (prev) {
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make.width.equalTo(prev);
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make.left.equalTo(prev.mas_right).offset(fixedSpacing);
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if (i == self.count - 1) {//last one
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make.right.equalTo(tempSuperView).offset(-tailSpacing);
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}
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}
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else {//first one
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make.left.equalTo(tempSuperView).offset(leadSpacing);
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}
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}];
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prev = v;
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}
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}
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else {
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MAS_VIEW *prev;
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for (int i = 0; i < self.count; i++) {
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MAS_VIEW *v = self[i];
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[v mas_makeConstraints:^(MASConstraintMaker *make) {
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if (prev) {
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make.height.equalTo(prev);
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make.top.equalTo(prev.mas_bottom).offset(fixedSpacing);
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if (i == self.count - 1) {//last one
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make.bottom.equalTo(tempSuperView).offset(-tailSpacing);
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}
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}
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else {//first one
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make.top.equalTo(tempSuperView).offset(leadSpacing);
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}
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}];
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prev = v;
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}
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}
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}
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- (void)mas_distributeViewsAlongAxis:(MASAxisType)axisType withFixedItemLength:(CGFloat)fixedItemLength leadSpacing:(CGFloat)leadSpacing tailSpacing:(CGFloat)tailSpacing {
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if (self.count < 2) {
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NSAssert(self.count>1,@"views to distribute need to bigger than one");
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return;
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}
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MAS_VIEW *tempSuperView = [self mas_commonSuperviewOfViews];
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if (axisType == MASAxisTypeHorizontal) {
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MAS_VIEW *prev;
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for (int i = 0; i < self.count; i++) {
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MAS_VIEW *v = self[i];
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[v mas_makeConstraints:^(MASConstraintMaker *make) {
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make.width.equalTo(@(fixedItemLength));
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if (prev) {
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if (i == self.count - 1) {//last one
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make.right.equalTo(tempSuperView).offset(-tailSpacing);
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}
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else {
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CGFloat offset = (1-(i/((CGFloat)self.count-1)))*(fixedItemLength+leadSpacing)-i*tailSpacing/(((CGFloat)self.count-1));
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make.right.equalTo(tempSuperView).multipliedBy(i/((CGFloat)self.count-1)).with.offset(offset);
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}
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}
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else {//first one
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make.left.equalTo(tempSuperView).offset(leadSpacing);
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}
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}];
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prev = v;
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}
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}
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else {
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MAS_VIEW *prev;
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for (int i = 0; i < self.count; i++) {
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MAS_VIEW *v = self[i];
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[v mas_makeConstraints:^(MASConstraintMaker *make) {
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make.height.equalTo(@(fixedItemLength));
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if (prev) {
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if (i == self.count - 1) {//last one
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make.bottom.equalTo(tempSuperView).offset(-tailSpacing);
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}
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else {
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CGFloat offset = (1-(i/((CGFloat)self.count-1)))*(fixedItemLength+leadSpacing)-i*tailSpacing/(((CGFloat)self.count-1));
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make.bottom.equalTo(tempSuperView).multipliedBy(i/((CGFloat)self.count-1)).with.offset(offset);
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}
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}
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else {//first one
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make.top.equalTo(tempSuperView).offset(leadSpacing);
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}
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}];
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prev = v;
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}
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}
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}
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- (MAS_VIEW *)mas_commonSuperviewOfViews
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{
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MAS_VIEW *commonSuperview = nil;
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MAS_VIEW *previousView = nil;
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for (id object in self) {
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if ([object isKindOfClass:[MAS_VIEW class]]) {
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MAS_VIEW *view = (MAS_VIEW *)object;
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if (previousView) {
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commonSuperview = [view mas_closestCommonSuperview:commonSuperview];
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} else {
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commonSuperview = view;
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}
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previousView = view;
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}
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}
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NSAssert(commonSuperview, @"Can't constrain views that do not share a common superview. Make sure that all the views in this array have been added into the same view hierarchy.");
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return commonSuperview;
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}
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@end
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