HTHorizontalSelectionList

A simple, horizontally-scrolling list of items that can be used as a more flexible replacement for UISegmentedControl

##Example

A simple side-scrolling list of items (perhaps filters for a UITableView below).

##Setup via CocoaPods

Add HTHorizontalSelectionList pod into your Podfile

pod 'HTHorizontalSelectionList', '~> 0.2.4'

##Usage ###Setup and Initialization

To begin using HTHorizontalSelectionList, import the main header:

#import <HTHorizontalSelectionList/HTHorizontalSelectionList.h>

The horizontal selection list uses a data-source/delegate model (similar to UITableView or UIPickerView). To setup a simple horizontal selection list, init the view and set it's delegate and data source:

@interface CarListViewController () <HTHorizontalSelectionListDataSource, HTHorizontalSelectionListDelegate>

@property (nonatomic, strong) HTHorizontalSelectionList *selectionList;
@property (nonatomic, strong) NSArray *carMakes;

@end

@implementation CarListViewController

- (void)viewDidLoad {
	[super viewDidLoad];

	self.selectionList = [[HTHorizontalSelectionList alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, 30)];
	selectionList.delegate = self;
	selectionList.dataSource = self;

	self.carMakes = @[@"ALL CARS",
                      @"AUDI",
                      @"BITTER",
                      @"BMW",
                      @"BÜSSING",
                      @"GUMPERT",
                      @"MAN"];
}

#pragma mark - HTHorizontalSelectionListDataSource Protocol Methods

- (NSInteger)numberOfItemsInSelectionList:(HTHorizontalSelectionList *)selectionList {
    return self.carMakes.count;
}

- (NSString *)selectionList:(HTHorizontalSelectionList *)selectionList titleForItemWithIndex:(NSInteger)index {
    return self.carMakes[index];
}

#pragma mark - HTHorizontalSelectionListDelegate Protocol Methods

- (void)selectionList:(HTHorizontalSelectionList *)selectionList didSelectButtonWithIndex:(NSInteger)index {
    // update the view for the corresponding index
}

###Customizing the appearance

The HTHorizontalSelectionList has a number of configurable properties.

To adjust the selected color of the buttons use the following method:

- (void)setTitleColor:(UIColor *)color forState:(UIControlState)state;

Additionally, you can set the selection indicator color with these proprties:

@property (nonatomic, strong) UIColor *selectionIndicatorColor;

@property (nonatomic) HTHorizontalSelectionIndicatorStyle selectionIndicatorStyle;

There are two selection styles:

typedef NS_ENUM(NSInteger, HTHorizontalSelectionIndicatorStyle) {
    HTHorizontalSelectionIndicatorStyleBottomBar,           // Default
    HTHorizontalSelectionIndicatorStyleButtonBorder
};

You can adjust the content insets of each button with:

@property (nonatomic) UIEdgeInsets buttonInsets;

Setting bottomTrimColor changes the appearance of the thin line below the entire view:

@property (nonatomic, strong) UIColor *bottomTrimColor;