public Object getData(String dataId) {
if (LangDataKeys.PSI_ELEMENT.is(dataId)) {
TreePath path = getSelectedUniquePath();
if (path == null) return null;
DefaultMutableTreeNode node = (DefaultMutableTreeNode) path.getLastPathComponent();
Object userObject = node.getUserObject();
if (!(userObject instanceof AbstractTreeNode)) return null;
AbstractTreeNode descriptor = (AbstractTreeNode) userObject;
Object element = descriptor.getValue();
if (element instanceof StructureViewTreeElement) {
element = ((StructureViewTreeElement) element).getValue();
}
if (!(element instanceof PsiElement)) return null;
if (!((PsiElement) element).isValid()) return null;
return element;
}
if (LangDataKeys.PSI_ELEMENT_ARRAY.is(dataId)) {
return convertToPsiElementsArray(getSelectedElements());
}
if (PlatformDataKeys.FILE_EDITOR.is(dataId)) {
return myFileEditor;
}
if (PlatformDataKeys.CUT_PROVIDER.is(dataId)) {
return myCopyPasteDelegator.getCutProvider();
}
if (PlatformDataKeys.COPY_PROVIDER.is(dataId)) {
return myCopyPasteDelegator.getCopyProvider();
}
if (PlatformDataKeys.PASTE_PROVIDER.is(dataId)) {
return myCopyPasteDelegator.getPasteProvider();
}
if (PlatformDataKeys.NAVIGATABLE.is(dataId)) {
Object[] selectedElements = getSelectedTreeElements();
if (selectedElements == null || selectedElements.length == 0) return null;
if (selectedElements[0] instanceof Navigatable) {
return selectedElements[0];
}
}
if (PlatformDataKeys.HELP_ID.is(dataId)) {
return getHelpID();
}
return super.getData(dataId);
}