// Copyright 2014-2017 ClassicalSharp | Licensed under BSD-3
using System;
using System.Drawing;
using ClassicalSharp.Gui.Widgets;
using OpenTK.Input;

namespace ClassicalSharp.Gui.Screens {
	public abstract class MenuScreen : ClickableScreen {
		
		public MenuScreen(Game game) : base(game) {
		}
		protected Widget[] widgets;
		protected Font titleFont, regularFont;
		protected FastColour backCol = new FastColour(60, 60, 60, 160);
		
		protected void RenderMenuBounds() {
			gfx.Draw2DQuad(0, 0, game.Width, game.Height, backCol);
		}
		
		protected void RenderMenuWidgets(double delta) {
			for (int i = 0; i < widgets.Length; i++) {
				if (widgets[i] == null) continue;
				widgets[i].Render(delta);
			}
		}
		
		public override void Render(double delta) {
			RenderMenuBounds();
			gfx.Texturing = true;
			RenderMenuWidgets(delta);
			gfx.Texturing = false;
		}
		
		public override void Dispose() {
			for (int i = 0; i < widgets.Length; i++) {
				if (widgets[i] == null) continue;
				widgets[i].Dispose();
			}
			
			if (titleFont != null)
				titleFont.Dispose();
			if (regularFont != null)
				regularFont.Dispose();
		}

		public override void OnResize(int width, int height) {
			for (int i = 0; i < widgets.Length; i++) {
				if (widgets[i] == null) continue;
				widgets[i].CalculatePosition();
			}
		}
		
		public override bool HandlesAllInput { get { return true; } }
		
		public override bool HandlesMouseClick(int mouseX, int mouseY, MouseButton button) {
			return HandleMouseClick(widgets, mouseX, mouseY, button);
		}
		
		public override bool HandlesMouseMove(int mouseX, int mouseY) {
			return HandleMouseMove(widgets, mouseX, mouseY);
		}
		
		public override bool HandlesMouseScroll(int delta) { return true; }
		
		public override bool HandlesKeyPress(char key) { return true; }
		
		public override bool HandlesKeyDown(Key key) { return true; }
		
		public override bool HandlesKeyUp(Key key) { return true; }
	}
}