Method activate

tools/mcsim/ControlsPane.js:187–190

(container, active)

			width:160, height:30, active:true,
			Behavior: class extends ButtonBehavior {
				activate(container, active) {
					container.active = active;
					this.onStateChanged(container);
				}
				onDisplaying(container) {
					let data = this.data;
					if ("active" in data)