ng release and blank controls

source/io/newgrounds/swf/common/Button.hx

@@ -0,0 +1,151 @@
+package io.newgrounds.swf.common;
+
+import openfl.display.Stage;
+import openfl.events.Event;
+import openfl.events.MouseEvent;
+import openfl.display.MovieClip;
+
+class Button {
+	
+	var _enabled:Bool;
+	public var enabled(get, set):Bool;
+	function get_enabled():Bool { return _enabled; }
+	function set_enabled(value:Bool):Bool {
+		
+		if (value != _enabled) {
+			
+			_enabled = value;
+			updateEnabled();
+		}
+		
+		return value;
+	}
+	
+	public var onClick:Void->Void;
+	public var onOver:Void->Void;
+	public var onOut:Void->Void;
+	
+	var _target:MovieClip;
+	var _down:Bool;
+	var _over:Bool;
+	var _foundLabels:Array<String>;
+	
+	public function new(target:MovieClip, onClick:Void->Void = null, onOver:Void->Void = null, onOut:Void->Void = null) {
+		
+		_target = target;
+		this.onClick = onClick;
+		this.onOver = onOver;
+		this.onOut = onOut;
+		
+		_foundLabels = new Array<String>();
+		for (label in _target.currentLabels)
+			_foundLabels.push(label.name);
+		
+		_target.stop();
+		_target.addEventListener(Event.ADDED_TO_STAGE, onAdded);
+		if (target.stage != null)
+			onAdded(null);
+		
+		enabled = true;
+	}
+	
+	function onAdded(e:Event):Void {
+		
+		var stage = _target.stage;
+		stage.addEventListener(MouseEvent.MOUSE_UP, mouseHandler);
+		_target.addEventListener(MouseEvent.MOUSE_OVER, mouseHandler);
+		_target.addEventListener(MouseEvent.MOUSE_OUT, mouseHandler);
+		_target.addEventListener(MouseEvent.MOUSE_DOWN, mouseHandler);
+		_target.addEventListener(MouseEvent.CLICK, mouseHandler);
+		
+		function selfRemoveEvent(e:Event):Void {
+			
+			_target.removeEventListener(Event.REMOVED_FROM_STAGE, selfRemoveEvent);
+			onRemove(e, stage);
+		}
+		_target.addEventListener(Event.REMOVED_FROM_STAGE, selfRemoveEvent);
+	}
+	
+	function onRemove(e:Event, stage:Stage):Void {
+		
+		stage.removeEventListener(MouseEvent.MOUSE_UP, mouseHandler);
+		_target.removeEventListener(MouseEvent.MOUSE_OVER, mouseHandler);
+		_target.removeEventListener(MouseEvent.MOUSE_OUT, mouseHandler);
+		_target.removeEventListener(MouseEvent.MOUSE_DOWN, mouseHandler);
+		_target.removeEventListener(MouseEvent.CLICK, mouseHandler);
+	}
+	
+	function mouseHandler(event:MouseEvent):Void {
+		
+		switch(event.type) {
+			
+			case MouseEvent.MOUSE_OVER:
+				
+				_over = true;
+				
+				if (onOver != null)
+					onOver();
+				
+			case MouseEvent.MOUSE_OUT:
+				
+				_over = false;
+				
+				if (onOut != null)
+					onOut();
+				
+			case MouseEvent.MOUSE_DOWN:
+				
+				_down = true;
+				
+			case MouseEvent.MOUSE_UP:
+				
+				_down = false;
+				
+			case MouseEvent.CLICK:
+				
+				if (enabled && onClick != null)
+					onClick();
+		}
+		updateState();
+	}
+	
+	function updateEnabled():Void {
+		
+		updateState();
+		
+		_target.useHandCursor = enabled;
+		_target.buttonMode = enabled;
+	}
+	
+	function updateState():Void {
+		
+		var state = determineState();
+		
+		if (_target.currentLabel != state && _foundLabels.indexOf(state) != -1)
+			_target.gotoAndStop(state);
+	}
+	
+	function determineState():String {
+		
+		if (enabled) {
+			
+			if (_over)
+				return _down ? "down" : "over";
+			
+			return "up";
+			
+		}
+		return "disabled";
+	}
+	
+	public function destroy():Void {
+		
+		_target.removeEventListener(Event.ADDED_TO_STAGE, onAdded);
+		
+		_target = null;
+		onClick = null;
+		onOver = null;
+		onOut = null;
+		_foundLabels = null;
+	}
+}