#import "ALMacViewController.h"

#import "PureLayout.h"

typedef NS_ENUM(NSInteger, ExampleConstraintDemo) {

ExampleConstraintDemoReset = 0,

ExampleConstraintDemo1,

ExampleConstraintDemo2,

ExampleConstraintDemo3,

ExampleConstraintDemo4,

ExampleConstraintDemo5,

ExampleConstraintDemoCount

};

@interface ALMacViewController ()

@property (nonatomic, strong) NSView *containerView;

@property (nonatomic, strong) NSView *blueView;

@property (nonatomic, strong) NSView *redView;

@property (nonatomic, strong) NSView *yellowView;

@property (nonatomic, strong) NSView *greenView;

@property (nonatomic, strong) NSTextView *orangeView;

@property (nonatomic, assign) ExampleConstraintDemo constraintDemo;

@property (nonatomic, assign) BOOL isAnimatingDemo3;

@property (nonatomic, strong) NSLayoutConstraint *demo3BlueBottomInset;

@property (nonatomic, strong) NSLayoutConstraint *demo3BlueRightInset;

@property (nonatomic, strong) NSLayoutConstraint *demo3RedSizeConstraint;

@property (nonatomic, strong) NSLayoutConstraint *demo3GreenPinConstraint;

@implementation ALMacViewController

- (void)loadView

{

self.view = [NSView new];

[self resetAndSetupViews];

// Start off by resetting and advancing to the first demo

self.constraintDemo = ExampleConstraintDemoReset;

[self nextDemo];

}

- (void)resetAndSetupViews

{

[_containerView removeFromSuperview];

[_blueView removeFromSuperview];

[_redView removeFromSuperview];

[_yellowView removeFromSuperview];

[_greenView removeFromSuperview];

[_orangeView removeFromSuperview];

_containerView = nil;

_blueView = nil;

_redView = nil;

_yellowView = nil;

_greenView = nil;

_orangeView = nil;

[self.view addSubview:self.containerView];

[self.containerView addSubview:self.blueView];

[self.containerView addSubview:self.redView];

[self.containerView addSubview:self.yellowView];

[self.containerView addSubview:self.greenView];

[self.containerView addSubview:self.orangeView];

}

- (void)setupDemo1

{

NSArray *subviews = @[self.blueView, self.redView, self.yellowView, self.greenView, self.orangeView];

[self.blueView autoSetDimension:ALDimensionWidth toSize:80.0];

[subviews autoMatchViewsDimension:ALDimensionWidth];

[self.orangeView autoAlignAxisToSuperviewAxis:ALAxisVertical];

[subviews autoDistributeViewsAlongAxis:ALAxisVertical alignedTo:ALAttributeVertical withFixedSize:30.0 insetSpacing:YES];

}

- (void)setupDemo2

{

NSArray *subviews = @[self.blueView, self.redView, self.yellowView, self.greenView, self.orangeView];

[self.blueView autoMatchDimension:ALDimensionHeight toDimension:ALDimensionWidth ofView:self.blueView];

[subviews autoMatchViewsDimension:ALDimensionHeight];

[self.orangeView autoAlignAxisToSuperviewAxis:ALAxisHorizontal];

[subviews autoDistributeViewsAlongAxis:ALAxisHorizontal alignedTo:ALAttributeHorizontal withFixedSpacing:10.0 insetSpacing:NO];

}

- (void)setupDemo3

{

[self.redView autoSetDimension:ALDimensionHeight toSize:44.0];

[self.blueView autoMatchDimension:ALDimensionHeight toDimension:ALDimensionHeight ofView:self.redView];

[self.redView autoPinEdgeToSuperviewEdge:ALEdgeLeading withInset:20.0];

[self.redView autoPinEdgeToSuperviewEdge:ALEdgeTop withInset:20.0];

[self.blueView autoPinEdgeToSuperviewEdge:ALEdgeTrailing withInset:20.0];

[self.blueView autoPinEdgeToSuperviewEdge:ALEdgeTop withInset:20.0];

[self.blueView autoPinEdge:ALEdgeLeading toEdge:ALEdgeTrailing ofView:self.redView withOffset:10.0];

[self.blueView autoMatchDimension:ALDimensionWidth toDimension:ALDimensionWidth ofView:self.redView withMultiplier:3.0];

[self.orangeView autoPinEdge:ALEdgeTop toEdge:ALEdgeBottom ofView:self.blueView withOffset:20.0];

[self.orangeView autoPinEdge:ALEdgeLeading toEdge:ALEdgeLeading ofView:self.redView withOffset:20.0];

[self.orangeView autoPinEdge:ALEdgeTrailing toEdge:ALEdgeTrailing ofView:self.blueView withOffset:-10.0];

[self.orangeView autoPinEdgeToSuperviewEdge:ALEdgeBottom withInset:20.0];

}

- (void)setupDemo4

{

[self.blueView autoPinEdgeToSuperviewEdge:ALEdgeTop withInset:10.0];

[self.blueView autoSetDimensionsToSize:CGSizeMake(25.0, 10.0)];

[self.blueView autoAlignAxisToSuperviewAxis:ALAxisVertical];

NSArray *subviews = @[self.blueView, self.redView, self.yellowView, self.greenView, self.orangeView];

[subviews autoAlignViewsToAxis:ALAxisVertical];

NSView *previousView = nil;

for (NSView *view in subviews) {

if (previousView) {

[view autoPinEdge:ALEdgeTop toEdge:ALEdgeBottom ofView:previousView withOffset:10.0];

// The orange view will be allowed to change its size if it conflicts with a required constraint

NSLayoutPriority priority = (view == self.orangeView) ? NSLayoutPriorityDefaultHigh + 1 : NSLayoutPriorityRequired;

[NSView autoSetPriority:priority forConstraints:^{

[view autoMatchDimension:ALDimensionWidth toDimension:ALDimensionWidth ofView:previousView withMultiplier:1.5];

[view autoMatchDimension:ALDimensionHeight toDimension:ALDimensionHeight ofView:previousView withMultiplier:2.0];

}];

}

previousView = view;

}

[self.orangeView autoPinEdge:ALEdgeBottom toEdge:ALEdgeBottom ofView:self.containerView withOffset:-10.0 relation:NSLayoutRelationLessThanOrEqual];

}

- (void)setupDemo5

{

[self.redView autoCenterInSuperview];

[self.redView autoSetDimensionsToSize:CGSizeMake(100.0, 250.0)];

[self.orangeView autoSetDimensionsToSize:CGSizeMake(50.0, 50.0)];

[self.orangeView autoPinEdge:ALEdgeLeading toEdge:ALEdgeLeading ofView:self.redView];

[self.orangeView autoConstrainAttribute:ALAttributeHorizontal toAttribute:ALAttributeTop ofView:self.redView];

}

#pragma mark Private Helper Methods

- (void)setupConstraintsForCurrentDemo

{

if (self.constraintDemo >= ExampleConstraintDemoCount) {

// Return to the first demo after the last one

self.constraintDemo = ExampleConstraintDemo1;

}

[self resetAndSetupViews];

[self.containerView autoPinEdgesToSuperviewEdgesWithInsets:NSEdgeInsetsMake(30.0, 10.0, 10.0, 10.0)];

switch (self.constraintDemo) {

case ExampleConstraintDemo1:

[self setupDemo1];

break;

case ExampleConstraintDemo2:

[self setupDemo2];

break;

case ExampleConstraintDemo3:

[self setupDemo3];

break;

case ExampleConstraintDemo4:

[self setupDemo4];

break;

case ExampleConstraintDemo5:

[self setupDemo5];

break;

default:

self.constraintDemo = ExampleConstraintDemoReset;

break;

}

}

- (void)nextDemo

{

self.constraintDemo++;

[self setupConstraintsForCurrentDemo];

}

#pragma mark Property Accessors

- (NSView *)containerView

{

if (!_containerView) {

_containerView = [NSView newAutoLayoutView];

_containerView.wantsLayer = YES;

_containerView.layer.backgroundColor = [NSColor colorWithWhite:0.2 alpha:1].CGColor;

}

return _containerView;

}

- (NSView *)blueView

{

if (!_blueView) {

_blueView = [[NSView alloc] initForAutoLayout];

_blueView.wantsLayer = YES;

_blueView.layer.backgroundColor = [NSColor blueColor].CGColor;

}

return _blueView;

}

- (NSView *)redView

{

if (!_redView) {

_redView = [[NSView alloc] initForAutoLayout];

_redView.wantsLayer = YES;

_redView.layer.backgroundColor = [NSColor redColor].CGColor;

}

return _redView;

}

- (NSView *)yellowView

{

if (!_yellowView) {

_yellowView = [[NSView alloc] initForAutoLayout];

_yellowView.wantsLayer = YES;

_yellowView.layer.backgroundColor = [NSColor yellowColor].CGColor;

}

return _yellowView;

}

- (NSView *)greenView

{

if (!_greenView) {

_greenView = [[NSView alloc] initForAutoLayout];

_greenView.wantsLayer = YES;

_greenView.layer.backgroundColor = [NSColor greenColor].CGColor;

}

return _greenView;

}

- (NSTextView *)orangeView

{

if (!_orangeView) {

_orangeView = [[NSTextView alloc] initForAutoLayout];

_orangeView.wantsLayer = YES;

_orangeView.backgroundColor = [NSColor orangeColor];

_orangeView.font = [NSFont systemFontOfSize:10.0];

_orangeView.textColor = [NSColor whiteColor];

_orangeView.alignment = NSCenterTextAlignment;

_orangeView.string = NSLocalizedString(@"Lorem ipsum", nil);

_orangeView.verticallyResizable = NO;

}

return _orangeView;

}