Prepare_dynamic_navigation to embed in another component

Hi,
I have two components A and B. A uses B as used component. Both A and B have I as used component. I is the interface component for visual components. Component VC implements interface component I.
My requirement is to put component VC in a view container in component B. But A should act as the controlling component and should take care of creating component VC and embed the created component VC into view container of B. Is it possible using prepare_dynamic_navigation method?
I am using the code as follows in component A:
try.
      l_view_controller_api->prepare_dynamic_navigation(
             source_window_name          = 'WI_MANAGECOURSE'
             source_vusage_name          = 'MAIN_USAGE_1'
             source_plug_name            = 'GOOUT'
             target_component_name       = 'B'
             target_component_usage      = 'MAIN_USAGE_1'
             target_view_name            = 'WI_GENERICRM'
             target_plug_name            = 'DEFAULT'
             target_embedding_position   = 'VI_MAIN/VIEWCONTAINER' ).
    catch cx_wd_runtime_repository.
      raise exception type cx_wdr_rt_exception.
endtry.
Create the actual visual Component
if wa_cmp_usage-component_usage->has_active_component( ) is not initial.
    wa_cmp_usage-component_usage->delete_component( ).
endif.
wa_cmp_usage-component_usage->create_component( 'VC' ).
This code gets executed fine but some where in the ABAP frame work class, I get the error:
"Component Usage VIEW_INTERFACE Has No Component. Application May Not Have Created an Instance "
VIEW_INTERFACE is the component use for interface I in both components A and B.
Regards,
Srini.

Hi,
The problem is resolved after I moved the embedding on to the same component. But I doubt whether it would be possible to use prepare_dynamic_navigation to embed in another component.
Regards,
Srini.

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        ]]>
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   <src:VideoComp id="videoComp" />
   <mx:Button click="doSomething()" label="copy" />
   <src:SharingComp id="sharingComp" />
</mx:Application>
Hope this helps,
BaBo,

Having a JPanel 'float' semi-transparently over another component

I am a programmer of a java project for our company.
Managemnt decided that when a certain event happens, we need to 'semi-disable' a certain text area (in a JScrollPane), and have a floating message with a progress bar on top of this text area, but be semi-transparent, so you can still read the text under it.
(Basically, they want it to look like a html page with a floating, semi-transparent DIV, because that is how another group mocked it up).
I am trying to implement this, but am running into problems.
Here is what I have, below I'll tell you what is wrong with it.
     * The purpose of this class is to have a scroll pane that can have it's contents partially covered by another panel
     * while still being able to read both the original panel and the new covering content, and still being able to scroll
     *the content under the covering panel.
    public class JOverlayScrollPane extends JScrollPane{
        private JPanel overlay = null;
        private Insets overlayInsets = null;
        private java.awt.AlphaComposite blend = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.50f);
        private ComponentAdapter cl = null;
        public void setOverlay(JPanel pan, Insets inset){
            overlay = pan;
            overlayInsets = inset;
            if(cl != null){
                cl = new ComponentAdapter(){
                    public void componentResized(ComponentEvent e){
                        resizeOverlay();
            resizeOverlay();
            repaint();
        public void paint(Graphics g){
            super.paint(g);
            if(g instanceof Graphics2D && overlay !=null){
                Graphics2D g2 = (Graphics2D)g;
//                g2.setComposite(blend);
                //overlay.paint(g2);
                paintStuff(g,overlay);
        private void resizeOverlay(){
            if(overlay != null){
                Dimension size = getSize();
                int x = 0;
                int y = 0;
                if(overlayInsets !=null){
                    x = overlayInsets.left;
                    y = overlayInsets.top;
                    size.width = size.width - overlayInsets.left - overlayInsets.right;
                    size.height = size.height - overlayInsets.top - overlayInsets.bottom;
                overlay.reshape(x,y, size.width, size.height);
                overlay.doLayout();
                overlay.validate();
        private void paintStuff(Graphics g,Component c){
            if(c != null){
                c.paint(g);
                if(c instanceof Container){
                    Container cont = (Container)c;
                    for(int i=0;i<cont.getComponentCount();i++){
                        Component cc = cont.getComponent(i);
                        paintStuff(g,cc);
    }//end of overlay scroll pane(I am having problems, so for now, the alpha blend is commented out).
The first version didn't have the paintStuff() method (it just called paint). This just drew a big grey box, now of the sub-components of the passed in JPanel were drawing. I added the do layout and validate calls, without success.
Then I added the paintStuff call, and all the subcomponents now, draw, but they all draw at 0,0.
Questions
1. Is the the correct approach to do this, or sould I be playing with the glass pane or some other approach?
2. It seems that the overlay panel isn't being layed out / doens't paint it's children correctly. Is this because it isn't really part of the layout (i.e. it has no parent / is never added to a container) or am I just missing a step in 'faking' adding it to a layout?
3. I'm sure I could just override paint and paint my own stuff (hand draw the text and a progress bar), but I would really like to put everything on one JPanel as what we want to display my be different in the future. I know that I manually ahve to call repaint on this scrollpane if one of the components on the overlay JPanel change in appearence (the progress bar especailly), and that they won't get events (I don't care about this as they are all non-interactive for now). Is this a viable approach, or is there a better way to do this?
Thanks

Wow, good answer.
I never concidered using a root pane other than as it is used in JFrame.
Very cool answer.
Here is my origional code modifed with JN_'s idea, which cleaned up a repaint issue I was having.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class TransparentPanel extends JFrame implements ActionListener
    ProgressPanel progressPanel;
    int progressCount;
    public TransparentPanel()
        super( "TransparentPanel Test");
        setDefaultCloseOperation( EXIT_ON_CLOSE );
        JPanel panel = new JPanel( new BorderLayout() );
        JTextArea area = new JTextArea( 20, 40 );
        JRootPane pane = new JRootPane();
        pane.setContentPane( new JScrollPane( area ) );
        panel.add( pane, BorderLayout.CENTER );
        //panel.add( new JScrollPane( area ), BorderLayout.CENTER );
        progressPanel = new ProgressPanel();
        pane.setGlassPane( progressPanel );
        JPanel buttonPanel = new JPanel( new FlowLayout());
        JButton button = new JButton( "Show" );
        button.setActionCommand("SHOW");
        button.addActionListener( this );
        buttonPanel.add( button );
        button = new JButton( "Hide" );
        button.setActionCommand("HIDE");
        button.addActionListener( this );
        buttonPanel.add( button );
        panel.add( buttonPanel, BorderLayout.SOUTH);
        setContentPane( panel );
        pack();
        setLocationRelativeTo( null );
        setVisible( true );
    public static void main( String[] args )
        try
            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
        catch( Exception e )
            e.printStackTrace();
        new TransparentPanel();
    public class ProgressPanel extends JPanel
        Color bg = new Color( 225, 221, 221, 100 );
        Color fg = new Color( 170, 234, 202, 100 );
        int progress;
               setOpaque( false );
        public void setProgress( int n )
             setVisible( n > 0 && n <= 100 );
            progress = n;
            repaint();
        public void paint( Graphics g )
            if( isVisible() )
                Rectangle bounds = getBounds();
                g.setColor( bg );
                g.fillRect( bounds.x, bounds.y, bounds.width, bounds.height );
                g.setColor( fg );
                int width = (int)(((double)progress/100)*bounds.width);
                int height = (int) (((double)bounds.height)*.1);
                int y = (int) (((double)bounds.height)*.4);
                g.fillRect( bounds.x,y,width,height);
     * Invoked when an action occurs.
    public void actionPerformed(ActionEvent e)
        String cmd = e.getActionCommand();
        if(cmd.equals( "SHOW" ) )
            progressCount+= 10;
            if( progressCount > 100 )
                progressCount = -1;
        else if( cmd.equals("HIDE" ) )
            progressCount = -1;
        progressPanel.setProgress( progressCount );
}

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