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// "adi_screen" - Aldaron's Device Interface / Screen
//
// Copyright Jeron A. Lau 2017 - 2018.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// https://www.boost.org/LICENSE_1_0.txt)

mod button;
mod text;
pub use self::text::Font;
pub(crate) use self::text::DEFAULT_FONT;

use Texture;

/// A GUI Widget
pub enum Widget<'a> {
	/// An empty widget.
	None,
	/// A widget that contains another widget (left, right, up, down margin)
	Container(&'a Widget<'a>, usize, usize, usize, usize),
	/// A widget that can be clicked, closure executes on button release
	Button(&'a Widget<'a>, &'a Fn() -> ()),
	/// A widget that displays text
	Text(&'a str),
	/// A widget that displays an image
	Image(&'a Texture),
	/// A widget that displays an icon (save, open, hamburger menu, etc.)
	Icon(&'a usize), // TODO: change type to actually be an icon
	/// A horizontal list container across the top of it's container.
	MenuBar(&'a Vec<&'a Widget<'a>>),
	/// A vertical list container on the left side of it's container.
	SideBar(&'a Vec<&'a Widget<'a>>),
	/// A horizontal list container across the bottom of it's container.
	InfoBar(&'a Vec<&'a Widget<'a>>),
	/// A vertical list container on the right side of it's container.
	DataBar(&'a Vec<&'a Widget<'a>>),
	/// A list of switchable tabs.
	Tabs(&'a Vec<&'a str>, &'a Fn(usize) -> ()),
	/// A pop-up menu
	PopUp(&'a Widget<'a>, &'a Fn(usize) -> ()),
	/// An editable text field
	TextField(&'a str, &'a usize),
}

/// A Graphical User Interface
pub struct Gui<'a>(Widget<'a>);

impl<'a> Gui<'a> {
	/// A new GUI.
	pub fn new(widget: Widget<'a>) -> Self {
		Gui(widget)
	}
}