@Override
public void actionPerformed(AnActionEvent e) {
final PackagingElementNode<?> node = myLayoutTreeComponent.getSelection().getNodeIfSingle();
if (node == null) return;
final CompositePackagingElementNode parent = node.getParentNode();
if (parent == null) return;
final PackagingElement<?> element = node.getElementIfSingle();
final CompositePackagingElement<?> parentElement = parent.getElementIfSingle();
if (parentElement == null || element == null) return;
if (!myLayoutTreeComponent.checkCanModifyChildren(parentElement, parent, Arrays.asList(node)))
return;
final List<PackagingElement<?>> toSelect = new ArrayList<PackagingElement<?>>();
myLayoutTreeComponent.editLayout(
new Runnable() {
public void run() {
final int index = parentElement.getChildren().indexOf(element);
final PackagingElement<?> moved = parentElement.moveChild(index, myDirection);
if (moved != null) {
toSelect.add(moved);
}
}
});
if (!toSelect.isEmpty()) {
myLayoutTreeComponent.updateAndSelect(parent, toSelect);
}
}
private boolean isEnabled() {
if (myLayoutTreeComponent.isSortElements()) {
return false;
}
final PackagingElementNode<?> node = myLayoutTreeComponent.getSelection().getNodeIfSingle();
if (node == null) {
return false;
}
final CompositePackagingElementNode parent = node.getParentNode();
if (parent == null) return false;
final PackagingElement<?> element = node.getElementIfSingle();
final CompositePackagingElement<?> parentElement = parent.getElementIfSingle();
if (parentElement == null || element == null) return false;
final List<PackagingElement<?>> children = parentElement.getChildren();
final int index = children.indexOf(element);
return index != -1 && 0 <= index + myDirection && index + myDirection < children.size();
}