package Engine.GUI.components {
    import flash.display.DisplayObject;
    import flash.display.Sprite;
    import flash.display.GradientType;
    import flash.display.SpreadMethod;
    import flash.text.TextField;
    import flash.text.TextFormat;
    import flash.text.TextFormatAlign;
    import flash.geom.Matrix;
    import flash.events.Event;
    import flash.events.MouseEvent;

    public class dButton extends dComponent {

        public static const className:String = "dButton";
        public static const version:Number = 1.1;

        private var _caption:TextField = new TextField();
        private var _textFormat:TextFormat = new TextFormat("Verdana", 12, 0xFFFFFF, false, false, false, "",
                                            "", TextFormatAlign.CENTER, 0, 0, 0, 0);
        private var _button:Sprite = new Sprite();

        private var _enabled:Boolean = true;
        private var _roundEdges:int = 20;

        public function dButton(width:int, height:int, caption:String) {
            _caption.text = caption;
            _width = width;
            _height = height;
            this.addEventListener(Event.ADDED_TO_STAGE, onAdded);
        }

        private function onAdded(e:Event):void {
            this.addChild(_button);
            _button.x = 0; _button.y = 0;
            drawDefaultButton();
            this.addChild(_caption);
            applyTextFormat();
            if (_enabled) {
                this.addEventListener(MouseEvent.MOUSE_OVER, onMouseOver);
                this.addEventListener(MouseEvent.MOUSE_OUT, onMouseOut);
                this.addEventListener(MouseEvent.MOUSE_DOWN, onMouseDown);
            }
            this.addEventListener(Event.REMOVED_FROM_STAGE, onRemoved);
        }

        private function onRemoved(e:Event):void {
            this.removeChild(_button);
            this.removeChild(_caption);
            if (this.hasEventListener(MouseEvent.MOUSE_OVER))
                this.removeEventListener(MouseEvent.MOUSE_OVER, onMouseOver);
            if (this.hasEventListener(MouseEvent.MOUSE_OUT))
                this.removeEventListener(MouseEvent.MOUSE_OUT, onMouseOut);
            if (this.hasEventListener(MouseEvent.MOUSE_DOWN))
                this.removeEventListener(MouseEvent.MOUSE_DOWN, onMouseDown);
        }

        private function onMouseOver(e:MouseEvent):void {
            drawHoverButton();
        }

        private function onMouseOut(e:MouseEvent):void {
            drawDefaultButton();
        }

        private function onMouseDown(e:MouseEvent):void {
            this.removeEventListener(MouseEvent.MOUSE_OUT, onMouseOut);
            this.removeEventListener(MouseEvent.MOUSE_OVER, onMouseOver);
            stage.addEventListener(MouseEvent.MOUSE_UP, onMouseUp);
            drawPressedButton();
        }

        private function onMouseUp(e:MouseEvent):void {
            this.addEventListener(MouseEvent.MOUSE_OUT, onMouseOut);
            this.addEventListener(MouseEvent.MOUSE_OVER, onMouseOver);
            stage.removeEventListener(MouseEvent.MOUSE_UP, onMouseUp);
            drawHoverButton();
        }

        private function applyTextFormat():void {
            _caption.defaultTextFormat = _textFormat;
            if (_caption.text != "") _caption.setTextFormat(textFormat, 0, _caption.length);
            _caption.width = _width -3;
            _caption.y = (_height / 2 - _caption.textHeight / 2) -2;
            _caption.x = 2;
            _caption.height = _caption.textHeight+5;
            _caption.selectable = false;
        }

        public function get text():String {
            return _caption.text;
        }

        public function set text(s:String):void {
            _caption.text = s;
        }

        public function get textFormat():TextFormat {
            return _textFormat;
        }

        public function set textFormat(t:TextFormat):void {
            _textFormat = t;
            _caption.defaultTextFormat = _textFormat;
            if (_caption.text != "") _caption.setTextFormat(_textFormat, 0, _caption.length);
        }

        /* STATES */

        public function get enabled():Boolean {
            return _enabled;
        }

        public function set enabled(a:Boolean):void {
            if (_enabled && !a) {
                this.removeEventListener(MouseEvent.MOUSE_OVER, onMouseOver);
                this.removeEventListener(MouseEvent.MOUSE_OUT, onMouseOut);
                this.removeEventListener(MouseEvent.MOUSE_DOWN, onMouseDown);
                this.removeEventListener(MouseEvent.MOUSE_UP, onMouseUp);
                _enabled = false;
                drawDefaultButton();
                return;
            }
            if (!_enabled && a) {
                this.addEventListener(MouseEvent.MOUSE_OVER, onMouseOver);
                this.addEventListener(MouseEvent.MOUSE_OUT, onMouseOut);
                this.addEventListener(MouseEvent.MOUSE_DOWN, onMouseDown);
                this.addEventListener(MouseEvent.MOUSE_UP, onMouseUp);
                _enabled = true;
                drawDefaultButton();
            }
        }

        public function get buttonWidth():int {
            return _width;
        }

        public function set buttonWidth(a:int):void {
            _width = Math.abs(a);
            drawDefaultButton();
        }

        public function get buttonHeight():int {
            return _height;
        }

        public function set buttonHeight(a:int):void {
            _height = Math.abs(a);
            drawDefaultButton();
        }

        public function get roundEdges():int {
            return _roundEdges;
        }

        public function set roundEdges(a:int):void {
            _roundEdges = a;
            drawDefaultButton();
        }

        private function drawDefaultButton():void {
            _button.graphics.clear();
            var m:Matrix = new Matrix(); m.createGradientBox(_width, _height, (Math.PI / 180) * 90, 0, 0);
            if (_enabled)
                _button.graphics.beginGradientFill(GradientType.LINEAR, [0x363636, 0x141414], [1, 1], [0, 255], m, SpreadMethod.PAD);
            else
                _button.graphics.beginGradientFill(GradientType.LINEAR, [0x452405, 0x321A03], [1, 1], [0, 255], m, SpreadMethod.PAD);
            _button.graphics.drawRoundRect(0, 0, _width, _height, _roundEdges, _roundEdges);
        }

        private function drawHoverButton():void {
            _button.graphics.clear();
            var m:Matrix = new Matrix(); m.createGradientBox(_width, _height, (Math.PI / 180) * 90, 0, 0);
            _button.graphics.beginGradientFill(GradientType.LINEAR, [0x5C5C5C, 0x2C2C2C], [1, 1], [0, 255], m, SpreadMethod.PAD);
            _button.graphics.drawRoundRect(0, 0, _width, _height, _roundEdges, _roundEdges);
        }

        private function drawPressedButton():void {
            _button.graphics.clear();
            var m:Matrix = new Matrix(); m.createGradientBox(_width, _height, (Math.PI / 180) * 90, 0, 0);
            _button.graphics.beginGradientFill(GradientType.LINEAR, [0x141414, 0x363636], [1, 1], [0, 255], m, SpreadMethod.PAD);
            _button.graphics.drawRoundRect(0, 0, _width, _height, _roundEdges, _roundEdges);
        }

    }

}