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src/Common/Visual/Trees/SelectableTree.java

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+package Common.Visual.Trees;
+import Common.CurrentAnchestor;
+import Common.Visual.Selectable;
+
+import javax.swing.tree.DefaultMutableTreeNode;
+public class SelectableTree extends DataTree {
+    public SelectableTree(DefaultMutableTreeNode root_in) {
+        super(root_in);
+    }
+    @Override
+    public void LeftMouseAction1() {
+        Object element = CurrentAnchestor.get(getCurrent());
+        if ((element instanceof Selectable)) {
+            ((Selectable) element).SwitchSelection();
+            updateUI();
+        }
+    }
+}