/**
 * Canvas object
 * @param apiCanvas
 * @returns {GameLib.Canvas}
 * @constructor
 */
GameLib.Canvas = function(
	apiCanvas
) {
    if (GameLib.Utils.UndefinedOrNull(apiCanvas)) {
		apiCanvas = {};
	}

	if (apiCanvas instanceof GameLib.Canvas) {
		return apiCanvas;
	}

	GameLib.API.Canvas.call(
		this,
		apiCanvas.id,
		apiCanvas.name,
		apiCanvas.width,
		apiCanvas.height,
		apiCanvas.parentEntity
	);

    GameLib.Component.call(this);
};

GameLib.Canvas.prototype = Object.create(GameLib.API.Canvas.prototype);
GameLib.Canvas.prototype.constructor = GameLib.Canvas;

/**
 * Creates a light instance
 * @returns {*}
 */
GameLib.Canvas.prototype.createInstance = function() {

    this.instance = document.createElement('canvas');

    this.instance.width = this.width;
    this.instance.height = this.height;

    GameLib.Component.prototype.createInstance.call(this);
};

/**
 * Updates the instance with the current state
 */
GameLib.Canvas.prototype.updateInstance = function(property) {

    if (GameLib.Utils.UndefinedOrNull(property)) {
        console.warn('unknown property update for Canvas: ' + property);
    }

    if (property === 'width') {
        this.instance.width = this.width;
    }

    if (property === 'height') {
        this.instance.height = this.height;
    }

};

/**
 * Converts a GameLib.Canvas to a GameLib.API.Canvas
 * @returns {GameLib.API.Canvas}
 */
GameLib.Canvas.prototype.toApiObject = function() {
	return new GameLib.API.Canvas(
		this.id,
		this.name,
		this.width,
		this.height,
		GameLib.Utils.IdOrNull(this.parentEntity)
	);
};

/**
 * Returns a new GameLib.Canvas from a GameLib.API.Canvas
 * @param objectCanvas GameLib.API.Canvas
 * @returns {GameLib.Canvas}
 */
GameLib.Canvas.FromObject = function(objectCanvas) {

	return new GameLib.Canvas(
		GameLib.API.Canvas.FromObject(objectCanvas)
	);

};