private EditorCell findTarget(SelectionManager selectionManager) {
Selection selection = selectionManager.getSelection();
if (selection == null) {
return null;
}
EditorCell cell = selection.getSelectedCells().get(0);
while (cell.getParent() != null) {
cell = (EditorCell) cell.getParent();
}
if (cell instanceof EditorCell_Collection) {
return cell.findChild(
myHome ? CellFinders.FIRST_SELECTABLE_LEAF : CellFinders.LAST_SELECTABLE_LEAF);
}
return cell;
}
public boolean canExecute(jetbrains.mps.openapi.editor.EditorContext context) {
EditorCell selectedCell = getDeepestSelectedCell(context);
return selectedCell != null
&& selectedCell.getParent() != null
&& findTarget(selectedCell, selectedCell.getCaretX()) != null;
}