var dragging = false
var drawing = true
var erasing = false
var focused

var canvas, tools, palette, controls, brush, mode, current_tool

function init () {
  build()
  bind()
}
function build () {
	shader.init()
	shader.run(canvas)
	shader.animate()

	canvas.append(canvas_rapper)
	brush.append(brush_rapper)
	palette.append(palette_rapper)
	
  controls.circle.focus()
//  controls.shader.focus()

	brush.bg = colors.red
	brush.generate()
	brush.build()
}
function bind () {
	canvas.bind()
	palette.bind()
	brush.bind()
	controls.bind()
	
  window.addEventListener('mouseup', function(){
    dragging = erasing = false
		if (current_tool.name != 'shader') { cursor_input.focus() }
  });
  
	window.addEventListener('mousedown', function(e){
		if (current_tool.name == "shader") { return }
		cursor_input.focus()
	})
	cursor_input.addEventListener('keydown', function(e){
		if (focused) { focused.key(undefined, e.keyCode) }
	})
	cursor_input.addEventListener('input', function(e){
		if (current_tool.name == "shader") {
			cursor_input.value = ""
			return
		}
		if (! e.metaKey && ! e.ctrlKey && ! e.altKey) {
			e.preventDefault()
		}
		var char = cursor_input.value
		cursor_input.value = ""
		
		// var charFromKeyCode = String.fromCharCode(e.keyCode)

		switch (e.keyCode) {
			case 27: // esc
				if (focused) focused.blur()
				break
			case 219: // [
			  if (! focused && current_tool.name != "text") {
          brush.contract(1)
          break
        }
			case 221: // ]
			  if (! focused && current_tool.name != "text") {
          brush.expand(1)
          break
        }
			default:
				if (focused) focused.key(char, e.keyCode)
				break
		}
	})

	var contentType = 'text/plain;charset=utf-8'
	document.body.addEventListener('copy', function (e) {
		if (e.clipboardData) {
			e.preventDefault();
			e.clipboardData.setData(contentType, canvas.ascii());
		}
		if (window.clipboardData) {
			e.returnValue = false;
			window.clipboardData.setData(contentType, canvas.ascii());
		}
	}, false);

	document.addEventListener('DOMContentLoaded', function(){
		if (current_tool.name != 'shader') { cursor_input.focus() }
		document.body.classList.remove('loading')
	})
}


function int_key (f) {
	return function (key, keyCode) {
		var n = parseInt(key)
		! isNaN(n) && f(n)
	}
}

init()