Adding a nested manager

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The IlvManager class inherits from the IlvGraphic class; as a consequence, a manager and a grapher can be added to another manager or grapher just like any other graphic object. To add a manager to a manager, you use the addObject method of the IlvManager class.

Example: Adding a nested manager

The following code shows a simple nested manager.

import ilog.views.*;
import ilog.views.graphic.*;
import javax.swing.*;
import java.awt.*;

public class SubManagerExample
{
  public static void main(String[] args) {
    IlvGraphic obj;
    IlvManager toplevel = new IlvManager();
    IlvManager subManager = new IlvManager();

    obj = new IlvRectangle(new IlvRect(10,10,50,50), false, true);
    subManager.addObject(obj, false);
    obj = new IlvRectangle(new IlvRect(100,100,50,50), false, true);
    subManager.addObject(obj, false);

    toplevel.addObject(subManager, false);

    obj = new IlvRectangle(new IlvRect(10,200,50,50), false, true);
    toplevel.addObject(obj, false);

    final IlvManagerView view = new IlvManagerView(toplevel);
    view.setBackground(Color.blue);
    SwingUtilities.invokeLater(
      new Runnable() {
        public void run() {
          JFrame frame = new JFrame("Sub manager Example");
          frame.getContentPane().add(view);
          frame.setSize(200,200);
          frame.setVisible(true);
        }
      });
}

This simple example creates two IlvManager objects, the top-level manager (variable toplevel ) that will be displayed in the view and the submanager (variable subManager ). The submanager is added to the top-level manager by the line:

toplevel.addObject(subManager, false);

Two rectangles are also added to the submanager. Another rectangle is added at the top level.

The following figure shows the resulting application.

Submanager example

The white area is the submanager containing two rectangles.

Note

Adding a manager to a manager can be done to an infinite level. The library will just make sure that you do not create cycles in the hierarchy of nested managers.

Current section

Using nested managers