//
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// MASConstraint.h
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// Masonry
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//
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// Created by Jonas Budelmann on 20/07/13.
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// Copyright (c) 2013 cloudling. All rights reserved.
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//
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#import "MASViewAttribute.h"
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#import "MASConstraint.h"
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#import "MASLayoutConstraint.h"
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#import "MASUtilities.h"
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/**
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* A single constraint.
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* Contains the attributes neccessary for creating a NSLayoutConstraint and adding it to the appropriate view
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*/
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@interface MASViewConstraint : MASConstraint <NSCopying>
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/**
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* First item/view and first attribute of the NSLayoutConstraint
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*/
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@property (nonatomic, strong, readonly) MASViewAttribute *firstViewAttribute;
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/**
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* Second item/view and second attribute of the NSLayoutConstraint
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*/
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@property (nonatomic, strong, readonly) MASViewAttribute *secondViewAttribute;
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/**
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* initialises the MASViewConstraint with the first part of the equation
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*
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* @param firstViewAttribute view.mas_left, view.mas_width etc.
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*
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* @return a new view constraint
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*/
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- (id)initWithFirstViewAttribute:(MASViewAttribute *)firstViewAttribute;
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/**
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* Returns all MASViewConstraints installed with this view as a first item.
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*
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* @param view A view to retrieve constraints for.
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*
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* @return An array of MASViewConstraints.
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*/
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+ (NSArray *)installedConstraintsForView:(MAS_VIEW *)view;
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@end
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