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

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

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' && current_tool.name != 'load' && current_tool.name != 'save') { cursor_input.focus() }
  });
  
	window.addEventListener('mousedown', function(e){
		if (current_tool.name == "shader") { return }
		cursor_input.focus()
	})

	var direction = [0,1]
	cursor_input.addEventListener('keydown', function(e){

		console.log("keycode:", e.keyCode)
		
		switch (e.keyCode) {
			case 27: // esc
				if (focused) focused.blur()
				break
			case 219: // [
				if (current_tool.name != "text") {
					e.preventDefault()
					brush.contract(1)
					brush.modified = false
					break
				}
			case 221: // ]
				if (current_tool.name != "text") {
					e.preventDefault()
					brush.expand(1)
					brush.modified = false
					break
				}
			case 8:
				e.preventDefault()
				current_canvas.focusLex(focused.y-1, focused.x)
				focused.char = " "
				focused.build()
				return
			case 13: // return
				e.preventDefault()
				current_canvas.focusLex(focused.y, focused.x+1)
				return
			case 38: // up
				e.preventDefault()
				current_canvas.focusLex(focused.y - 1, focused.x + 0)
				break
			case 40: // down
				e.preventDefault()
				current_canvas.focusLex(focused.y + 1, focused.x + 0)
				break
			case 37: // left
				e.preventDefault()
				current_canvas.focusLex(focused.y + 0, focused.x - 1)
				break
			case 39: // right
				e.preventDefault()
				current_canvas.focusLex(focused.y + 0, focused.x + 1)
				break
//			default:
//				if (focused) { focused.key(undefined, e.keyCode) }
		}
	})

	cursor_input.addEventListener('input', function(e){
/*
		if (! e.metaKey && ! e.ctrlKey && ! e.altKey) {
			e.preventDefault()
		}
*/
		if (current_tool.name == "shader") {
			cursor_input.value = ""
			return
		}
		var char = cursor_input.value
		cursor_input.value = ""

		console.log("input:", char)

		if (focused && char) {
			var y = focused.y, x = focused.x
			focused.key(char, e.keyCode)
			current_canvas.focusLex(y + direction[0], focused.x + direction[1])
		}
	})

	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()