/// Show a menu on a particular chat bubble view, with an action sheet
/// attached to it.
///
/// - Parameters:
///   - bubbleView: Chat bubble view.
///   - direction: The direction in which the bubble view is located.
///   - actions: Actions of the action sheet in menu.
///   - items: Items to show on the bubble view, such as emoji.
///   - dismissCallback: Called when menu will dismiss.
///   - completedDismissCallback: Called when menu did dismiss.
static func show(on bubbleView: UIView,
                     direction: Direction,
                     actions: [Action],
                     items: [BubbleItem],
                     dismissCallback: (() -> ())? = nil,
                     completedDismissCallback: (() -> ())? = nil)

// Items
let emojis = "😀👍👎❤️🎉".characters.map { String($0) }
let items = emojis.map { emoji in
    ChatMenu.BubbleItem(title: emoji, image: nil, action: { 
        print("did Selected" + emoji)
    })
}

// Actions
let cameraAction = ChatMenu.Action(title: "Camera", tintColor: .green) {
    print("Open Camera")
}
let albumAction = ChatMenu.Action(title: "Album", tintColor: .orange) {
    print("Open Album")
}
let cancelAction = ChatMenu.Action(style: .cancel, title: "Cancel", tintColor: .red) { 
    print("Cancel")
}
let actions = [cameraAction, albumAction, cancelAction]

// Show
ChatMenu.show(on: bubbleView,
              direction: .left,
              actions: actions,
              items: items,
              dismissCallback: { print("ChatMenu will dismiss") },
              completedDismissCallback: { print("ChatMenu did dismiss") })