//
//  TKCoreLayoutItem.h
//  TelerikUI
//
//  Copyright (c) 2013 Telerik. All rights reserved.
//

#import "TKCoreLayout.h"

/**
 @enum TKLayoutSizingMode
 @discussion Defines the different sizing modes that can be used when arranging sub views in TKCoreStackLayout.
 */
typedef NS_ENUM(NSInteger, TKCoreLayoutSizingMode) {
    /**
     The stack layout will not change the size for the subview. It will change only the frame origin.
     */
    TKCoreLayoutSizingModeFixed,
    /**
     The stack layout will use the sizeThatFits method to determine the desired size for the subview.
     */
    TKCoreLayoutSizingModeFit,
};

@class TKCoreStackLayout;

/**
 Represents a base layout item that is used in TKStakLayout class.
 */
@interface TKCoreLayoutItem: NSObject<TKCoreLayout>

/**
 The sizing mode that will be used when arranging the view.
 
 @discussion The layout sizing modes are defined as follows:
 
 typedef enum {
 TKLayoutSizingModeFixed,    // The stack layout will not change the size for the subview. It will change only the frame origin.
 TKLayoutSizingModeFit,      // The stack layout will use the sizeThatFits method to determine the desired size for the subview.
 } TKLayoutSizingMode;
 
 */
@property TKCoreLayoutSizingMode sizingMode;

/**
 The streching mode that will be used when arranging the view.
 */
@property TKCoreLayoutStretchMode stretchMode;

/**
 The alignment mode that will be used when arranging the view.
 */
@property TKCoreLayoutAlignmentMode alignmentMode;

/**
 The margin that will be used when arranging the view.
 */
@property UIEdgeInsets margin;

/**
 Returns the item persisted in this class. It can be a view, a layer or any object implementing the TKCoreLayout interface.
 */
@property (nonatomic, readonly) id content;

/**
 Initializes the class and associates it with a view.
 @param aView The view to be associated with this layout item.
 @return An instance of the class, if successfull.
 */
-(instancetype)initWithView:(UIView*)aView;

/**
 Initializes the class and associates it with a view.
 @param aLayer The layer to be associated with this layout item.
 @return An instance of the class, if successfull.
 */
-(instancetype)initWithLayer:(CALayer*)aLayer;

/**
 Initializes the class and associates it with a view.
 @param aLayout The layout to be associated with this layout item.
 @return An instance of the class, if successfull.
 */
-(instancetype)initWithLayout:(id<TKCoreLayout>)aLayout;

/**
 This method is being called when the item is removed from its owner layout.
 */
-(void)itemWasRemoved;

@end