Method button0

src/main/java/fieldbox/boxes/plugins/Dispatch.java:207–258

(Window.Event<Window.MouseState> e)

	}

	protected Mouse.Dragger button0(Window.Event<Window.MouseState> e) {
		if (!e.after.keyboardState.keysDown.contains(GLFW_KEY_G)) return null;

		Vec2 point = new Vec2(e.after.mx, e.after.my);

		Optional<Box> hit = breadthFirst(both()).filter(b -> frame(b) != null)
			.filter(x -> !x.properties.isTrue(Box.hidden, false))
			.filter(b -> frame(b).intersects(point))
			.sorted((a, b) -> Float.compare(order(frame(a)), order(frame(b))))
			.findFirst();

		if (hit.isPresent()) {
			e.properties.put(Window.consumed, true);

			Box origin = hit.get();

			return new Mouse.Dragger() {
				@Override
				public boolean update(Window.Event<Window.MouseState> e, boolean termination) {

					Vec2 point = new Vec2(e.after.mx, e.after.my);

					Optional<Box> hit = breadthFirst(both()).filter(x -> !x.properties.isTrue(Box.hidden, false))
						.filter(b -> frame(b) != null)
						.filter(b -> frame(b).intersects(point))
						.sorted((a, b) -> Float.compare(order(frame(a)), order(frame(b))))
						.findFirst();

					if (hit.isPresent() && hit.get() != origin) {
						showCompleteDrag(origin, hit.get());
						if (termination) {
							completeDrag(origin, hit.get());
						}
					} else {
						showIncompleteDrag(origin, point, false);
						if (termination) {
							Dispatch.this.properties.removeFromMap(frameDrawing, "__ongoingDrag__");
						}
					}


					return true;
				}


			};
		}
		if (this.properties.removeFromMap(frameDrawing, "__ongoingDrag__") != null | this.properties.removeFromMap(frameDrawing, "__ongoingDrag__2") != null)
			Drawing.dirty(this);

		return null;
	}

	protected void showIncompleteDrag(Box start, Vec2 to, boolean speculative) {
		if (!speculative)