Documentation is wrong about integrating the viewer into a JPanel + proposed Fix

[simdeistud]

In the "Graph Visualization" tutorial of the documentation it is said that in order to include the viewer into a user-defined JPanel you have to use more or less the following code:

import org.graphstream.ui.swingViewer.View;
import org.graphstream.ui.swingViewer.Viewer;
// ....
Graph graph = new MultiGraph("embedded");
Viewer viewer = new Viewer(graph, Viewer.ThreadingModel.GRAPH_IN_ANOTHER_THREAD);
// ...
View view = viewer.addDefaultView(false);   // false indicates "no JFrame".
// ...
myJFrame.add(view);

This unfortunately doesn't work since the View class does not extend JPanel.
The solution I found is instead to use the SwingViewer and the ViewPanel classes, the latter which in fact extends JPanel.

import org.graphstream.ui.swing_viewer.SwingViewer;
import org.graphstream.ui.swing_viewer.ViewPanel;
// ....
Graph graph = new MultiGraph("embedded");
SwingViewer viewer = new SwingViewer(graph, Viewer.ThreadingModel.GRAPH_IN_GUI_THREAD);
// ...
ViewPanel view = (ViewPanel) viewer.addDefaultView(false);   // false indicates "no JFrame".
// ...
myJFrame.add(view);

This code actually works and correctly embeds a viewer into an external JPanel.

I don't know why the tutorial is wrong since it's supposed to be updated to the 2.0 version of this library.