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//
// ProductViewHeader.h
// Mobile Buy SDK
//
// Created by Shopify.
// Copyright (c) 2015 Shopify Inc. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
@import UIKit;
@import Buy;
@class AsyncImageView;
@class BUYProductVariant;
@class HeaderOverlayView;
/**
* The tableHeaderView containing a horizontally scrolling collection view
* that display product images.
*/
@interface ProductViewHeader : UIView
/**
* A horiztonally scrolling collection view containing product images.
*/
@property (nonatomic, strong) UICollectionView *collectionView;
/**
* An overlay view containing effects views (light or dark view and a UIVisualEffectsView) that becomes
* visible as the user scrolls the contents up. This provides a more seamless transition for the navigation bar.
*/
@property (nonatomic, strong) HeaderOverlayView *productViewHeaderOverlay;
/**
* Initializer with a frame to setup the product image collection view and theme the header
*
* @param frame Used for setting up the correct size of the collection view cells
* @param theme The theme for the product view
*
* @return The product view header to display in the BUYProductViewController's table view tableHeaderView
*/
- (instancetype)initWithFrame:(CGRect)frame;
/**
* A method to set the content offset of the table view and calculate the height of the image
* used to set the correct height and offset for the stickyFooterView in the ProductView.
*
* @param scrollView The table view being scrolled
*
* @return The height for the product image.
*/
- (CGFloat)imageHeightWithScrollViewDidScroll:(UIScrollView *)scrollView;
/**
* Updates the page control with the currently display product image index.
*
* @param currentPage The current index for the product image displayed.
*/
- (void)setCurrentPage:(NSInteger)currentPage;
/**
* When a BUYProductVariant is set update the product images accordingly by scrolling to the image
* matching the selected product variant.
*
* @param productVariant The selected product variant.
* @param images An array of product images for a product.
*/
- (void)setImageForSelectedVariant:(BUYProductVariant*)productVariant withImages:(NSArray*)images;
@end