Java - How to make a set of JInternalFrame independant of each other?

Posted by Amokrane on Stack Overflow See other posts from Stack Overflow or by Amokrane
Published on 2010-03-20T01:22:21Z Indexed on 2010/03/20 1:31 UTC
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Hello,

I'm programming a short Paint program like and I'm trying to make an MDI architecture for it. To make that happen, I used JInternalFrame inside a JDesktopPane. Although I kind of obtain multiple frames, there are not really working properly. Basically, if I have 2 JInternalFrame I can draw only on the last one. The other one seems to be disabled.

Here is a short video illustrating the problem. http://bit.ly/9ydiwM

Here are some part of the code.

Panneau.java
public class Panneau extends JDesktopPane
{

    /** La liste de fenêtres ouvertes */
    private static ArrayList<Cadre> cadres;

    /** Le pannel comportant la liste des formes à dessiner*/
    private Pannel pannel;

    /** La barre d'outils */
    private ToolBox toolBox;

    public Panneau()
    {

        this.setLayout(new BorderLayout());

        // Initialisations des listes de cadres
        cadres = new ArrayList<Cadre>();

        // En haut ToolBox
        toolBox = new ToolBox();
        this.add(toolBox, BorderLayout.NORTH);

        **// Intialisation de la première internal frame
        Cadre cadre = new Cadre();
        this.add(cadre, BorderLayout.CENTER);**

        cadres.add(cadre);

        // Ajout du pannel à gauche
        pannel = new Pannel();

        this.add(pannel, BorderLayout.WEST);

    }

    /**
     * Crée une nouvelle fenêtre de dessin
     * 
     */
    **public void createNewInternalFrame()
    {
        Cadre cadre = new Cadre();
        this.add(cadre, BorderLayout.CENTER);

        cadres.add(cadre);
    }**
}

public class Cadre extends JInternalFrame
{
    /** Largeur par d'une fenêtre interne */
    private int width;

    /** Hauteur d'une fenêtre interne */
    private int height;

    /** Titre d'une fenêtre interne */
    private String title;

    /** Toile associée à la fenêtre interne */
    private Toile toile;

    public Cadre()
    {
        width = 400;
        height = 400;
        title = "Form";

        toile = new Toile();

        this.setTitle(title);

        this.setSize(width, height);

        this.setEnabled(true);

        this.setResizable(true);

        this.setAutoscrolls(true);

        this.setClosable(true);

        this.setIconifiable(true);

        this.setDoubleBuffered(true);

        this.setContentPane(toile);

        this.setVisible(true);

        this.pack();    
    }
}

Basically, Panneau is the main Window that contains all the differents parts of the GUI. I can create as much JInternalFrame that I want, using : Panneau.createNewInternalFrame(). Toile is basically where I draw my shapes.

Any idea ?

Thanks

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