@Nullable
public Object getSelectedObject() {
final TreePath selectionPath = myTree.getSelectionPath();
if (selectionPath != null && selectionPath.getLastPathComponent() instanceof MyNode) {
MyNode node = (MyNode) selectionPath.getLastPathComponent();
final NamedConfigurable configurable = node.getConfigurable();
LOG.assertTrue(configurable != null, "already disposed");
return configurable.getEditableObject();
}
return null;
}
protected void removePaths(final TreePath... paths) {
MyNode parentNode = null;
int idx = -1;
for (TreePath path : paths) {
final MyNode node = (MyNode) path.getLastPathComponent();
final NamedConfigurable namedConfigurable = node.getConfigurable();
final Object editableObject = namedConfigurable.getEditableObject();
parentNode = (MyNode) node.getParent();
idx = parentNode.getIndex(node);
((DefaultTreeModel) myTree.getModel()).removeNodeFromParent(node);
myHasDeletedItems |= wasObjectStored(editableObject);
fireItemsChangeListener(editableObject);
onItemDeleted(editableObject);
namedConfigurable.disposeUIResources();
}
if (paths.length > 0) {
if (parentNode != null && idx != -1) {
DefaultMutableTreeNode toSelect = null;
if (idx < parentNode.getChildCount()) {
toSelect = (DefaultMutableTreeNode) parentNode.getChildAt(idx);
} else {
if (idx > 0 && parentNode.getChildCount() > 0) {
if (idx - 1 < parentNode.getChildCount()) {
toSelect = (DefaultMutableTreeNode) parentNode.getChildAt(idx - 1);
} else {
toSelect = (DefaultMutableTreeNode) parentNode.getFirstChild();
}
} else {
if (parentNode.isRoot() && myTree.isRootVisible()) {
toSelect = parentNode;
} else if (parentNode.getChildCount() > 0) {
toSelect = (DefaultMutableTreeNode) parentNode.getFirstChild();
}
}
}
if (toSelect != null) {
TreeUtil.selectInTree(toSelect, true, myTree);
}
} else {
TreeUtil.selectFirstNode(myTree);
}
}
}
protected void updateSelection(@Nullable NamedConfigurable configurable) {
myDetails.setText(configurable != null ? configurable.getBannerSlogan() : null);
myCurrentConfigurable = configurable;
if (configurable != null) {
final JComponent comp = configurable.createComponent();
if (comp == null) {
setEmpty();
LOG.error("createComponent() returned null. configurable=" + configurable);
} else {
myDetails.setContent(comp);
ensureInitialized(configurable);
myHistory.pushPlaceForElement(TREE_OBJECT, configurable.getEditableObject());
}
} else {
setEmpty();
}
}