/**
* Handle a drop from another layout
*
* @param event The drag and drop event
*/
@Override
protected void handleDropFromLayout(DragAndDropEvent event) {
AbsoluteLayoutTargetDetails details = (AbsoluteLayoutTargetDetails) event.getTargetDetails();
LayoutBoundTransferable transferable = (LayoutBoundTransferable) event.getTransferable();
Component component = transferable.getComponent();
Component source = event.getTransferable().getSourceComponent();
DDAbsoluteLayout layout = (DDAbsoluteLayout) details.getTarget();
int leftPixelPosition = details.getRelativeLeft();
int topPixelPosition = details.getRelativeTop();
// Check that we are not dragging an outer layout into an
// inner
// layout
Component parent = source.getParent();
while (parent != null) {
parent = parent.getParent();
}
// remove component from source using filter
if (source instanceof ComponentContainer) {
ComponentContainer sourceLayout = (ComponentContainer) source;
sourceLayout.removeComponent(component);
}
// Add component to absolute layout
layout.addComponent(
component, "left:" + leftPixelPosition + "px;top:" + topPixelPosition + "px");
}
/**
* Called when a component changed location within the layout
*
* @param event The drag and drop event
*/
@Override
protected void handleComponentReordering(DragAndDropEvent event) {
AbsoluteLayoutTargetDetails details = (AbsoluteLayoutTargetDetails) event.getTargetDetails();
DDAbsoluteLayout layout = (DDAbsoluteLayout) details.getTarget();
LayoutBoundTransferable transferable = (LayoutBoundTransferable) event.getTransferable();
Component component = transferable.getComponent();
// Get top-left pixel position
int leftPixelPosition = details.getRelativeLeft();
int topPixelPosition = details.getRelativeTop();
ComponentPosition position = layout.getPosition(component);
position.setLeft((float) leftPixelPosition, Sizeable.UNITS_PIXELS);
position.setTop((float) topPixelPosition, Sizeable.UNITS_PIXELS);
}