public void onMouseMove(MouseMoveEvent event) {
if (isMouseDown()) {
setDragging(true);
updateCSS();
model.setX(event.getX() + model.getX() - dragStartX);
model.setY(event.getY() + model.getY() - dragStartY);
onUpdateInModel();
int clientX = event.getClientX();
int clientY = event.getClientY();
boolean outsideWindow =
clientX < 0
|| clientY < 0
|| clientX > Window.getClientWidth()
|| clientY > Window.getClientHeight();
if (outsideWindow) {
parent.save(model, true);
setDragging(false);
}
}
event.preventDefault();
}
public void onMouseUp(MouseUpEvent event) {
Element element = view.getElement();
if (!isDragging()) {
updateCSS();
limitToBoundingBox();
if (NodeProxy.EXPANDED.equals(model.getState())) {
model.setState(NodeProxy.COLLAPSED);
for (NodeProxy neighbor : graph.getNeighbors(model)) {
boolean collapsed = NodeProxy.COLLAPSED.equals(neighbor.getState());
boolean leafNode = graph.degree(neighbor) == 1;
if (collapsed && leafNode) {
graph.removeNode(neighbor);
}
}
}
parent.toggle(model);
} else {
parent.save(model, true);
setDragging(false);
}
setMouseDown(false);
DOM.releaseCapture(element);
event.preventDefault();
}