// widget_animate.ysl2

widget_class("Animate") {
    ||
        frequency = 5;
        speed = 0;
        start = false;
        widget_center = undefined;

        dispatch(value) {
            this.speed = value / 5;

            //reconfigure animation
            this.request_animate();
        }

        animate(){
           // change animation properties
           for(let child of this.element.children){
                if(child.nodeName.startsWith("animate")){
                    if(this.speed != 0 && !this.start){
                        this.start = true;
                        this.element.beginElement();
                    }

                    if(this.speed > 0){
                        child.setAttribute("dur", this.speed+"s");
                    }
                    else if(this.speed < 0){
                        child.setAttribute("dur", (-1)*this.speed+"s");
                    }
                    else{
                        this.start = false;
                        this.element.endElement();
                    }
                }
           }
        }

        init() {
            let widget_pos = this.element.getBBox();
            this.widget_center = [(widget_pos.x+widget_pos.width/2), (widget_pos.y+widget_pos.height/2)];
        }
    ||
}