gvapplication.java

无线传感器网络节点Sun SPOT管理工具

     */
    public void addToView(GridView view) {
        view.add(this,0);
        validate();   //This is what made the tComponentHolder finally be fully visible.
        setInitialPositionInView(view);
        setLabelTextAndResize();
        repaint();
    }
    
    /*
     * Currently. migration  set to work between SunSPOTs only.
     *
     */
    public void dropIntoView(GridView gv){ 
        if(! Application.ALLOW_APP_MIGRATION ) {        
            super.dropIntoView(gv);
            getHostUIObject(gv).resetGVApplicationPositions();
            return;
        }
        SquawkHost currHost = getHostUIObject(gv).getSquawkHost();
        if(! (currHost instanceof SunSPOT)) {
            super.dropIntoView(gv);
            return;
        }
        SunSPOT currSPOT = (SunSPOT) currHost;
        SunSPOT newSPOT = currSPOT;
        GVSunSPOT newGVSPOT = null;
        /* Look for acceptable migration target */
        for(Component c : gv.getComponents()){
            if(c instanceof GVSunSPOT){
                if(c.getBounds().intersects(getBounds())){
                    /* Found a possible host */
                    newSPOT =  ((GVSunSPOT)c).getSpot();
                    newGVSPOT = (GVSunSPOT) c;
                }
            }
        }
        if(newSPOT != currSPOT) {
            getApplication().setState(Application.AppState.MIGRATING);
            gv.add(this,0);
          //  paintImmediately(0, 0 ,getWidth(),getHeight());
            /* NOTE: The order is critical: must start listener before sending, otherwise sender sends packets "into the void" so to speak. */
            newSPOT.sendSPOTMessage("RECEIVE_APP", getApplication().getIsolateID(), currSPOT.getAddress());
            currSPOT.sendSPOTMessage("MIGRATE_APP", getApplication().getIsolateID(), newSPOT.getAddress());
            super.dropIntoView(gv);
            getHostUIObject(gv).resetGVApplicationPositions();
            //A slow move towards the new host in anticipation of arrival there. Note the app is not yet assigned to the new host, that happems
            //when the new hoist reports APP_ARRIVED.
            animateTo(newGVSPOT,  newGVSPOT.getWidth(), (newGVSPOT.getHeight() - getHeight())/2, 6.0, 0.05, 0.0, 0.0);
        } else {
            super.dropIntoView(gv);
        }
    }
    
    public void delete(){
        GridView gv = getView();
        super.delete();
        if(gv != null){
            GVSquawkHost sh = getHostUIObject(gv);
            if( sh != null) sh.resetGVApplicationPositions();
        }
    }
    
    public String getAppName(){
        if (getVirtualObject() == null) return LocaleUtil.getString("No app");
        return ((Application)getVirtualObject()).getClassName();
    }
    
    public Application getApplication(){
        return (Application) getVirtualObject();
    }
    
    public PrintStream displayOutputGetStream(int port) {  
 
        GVComponentHolder tch = new GVComponentHolder();
        SPOTTextWindow frm = new SPOTTextWindow(){
            PrintStream ps;
            public PrintStream makePrintStream(){
                ps = super.makePrintStream();
                return ps;
            }
            public void dispose() {
                super.dispose();
                ps.close(); 
            }
        };
        String hostName = getHostUIObject(getView()).getSquawkHost().getName();
        frm.setTitle("Sytem.out from " + getAppName() + " on " + hostName);
        tch.add(frm);
        tch.setLocation(getLocation().x + getBasicWidth() , getLocation().y );
        addLoosePiece(tch);
        tch.addToView(getView());
        frm.setDefaultCloseOperation(SPOTTextWindow.DISPOSE_ON_CLOSE);
        try {
            frm.setSelected(true);
        } catch (PropertyVetoException ex) {
            ex.printStackTrace();
        } 
        PrintStream out = frm.makePrintStream();
        return out;
    }
    
    public PrintStream displayOutputExternalGetStream(int port){
        String hostName = getHostUIObject(getView()).getSquawkHost().getName();
        final SPOTTextExternalWindow frame = new SPOTTextExternalWindow();
        frame.setTitle("Sytem.out from " + getAppName() + " on " + hostName);
        PrintStream out = frame.makePrintStream();
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
                //Display the window.
                frame.pack();
                frame.setVisible(true); 
            }
        });
        return out;
    }
    
    public void startRemotePrinting(){
        GVRemotePrintWindow w = new GVRemotePrintWindow();  
        Vector[] reply = ((SunSPOT)getApplication().getHost()).sendSPOTMessage("START_REMOTE_PRINT_APP", getApplication().getIsolateID());
        String answer = (String) reply[0].elementAt(1);
        int portNum = Integer.decode(answer); //Automatic unboxing.  
        w.open(this, getApplication().getIsolateID(), getApplication().getClassName(), portNum, (SunSPOT) getApplication().getHost());
    };
    
    /*
     * This returns the GVSquawkHost with which this *should* be associated (as a "loosePiece").
     * 
     */
    public GVSquawkHost getHostUIObject(GridView gv){
        if(getVirtualObject() == null) return null;
        if(! (getVirtualObject() instanceof Application)) return null;
        Application app = getApplication();
        if(app.getHost() == null) return null;
        for(IUIObject uio : app.getHost().getUIObjectsCopy()) {
            if(uio instanceof GVSquawkHost){
                GVSquawkHost t = (GVSquawkHost) uio;
                if(t.getView() == gv){
                    return t;
                }
            }
        }
        return null;
    }
    
    public Vector<JMenuItem> getMenuItems() {
        if (getApplication() == null) return new Vector<JMenuItem>();
        Vector<JMenuItem> menuItems = new Vector<JMenuItem>();
        menuItems.addAll(menuHelper(getApplication().getApplicationMethods()));
        
        return menuItems;
    }
    
    public JPopupMenu getPopupMenu(){
        JPopupMenu menu = new JPopupMenu();
        Vector<JMenuItem> v = getMenuItems();
        for(JMenuItem item : v){
            menu.add(item);
        }
        return menu;
    }
    
    public void mouseButton3Pressed(MouseEvent e){
        JPopupMenu m = getPopupMenu();
        m.show(e.getComponent(), e.getX(), e.getY());
    }
    
    public void setInitialPositionInView(GridView gv) {
        //get iterator to find the UI object associated with this app. 
        GVSquawkHost gvsh = getHostUIObject(gv);
        if(! gvsh.getLoosePieces().contains(this)){
             //Not yet associated with the host
             setLocation(gvsh.getX(), gvsh.getY() + gvsh.getHeight()/2 - getHeight()/2);
             gvsh.addLoosePiece(this);
             gvsh.resetGVApplicationPositions();
        }  
    }
    
    public void noteState(Object obj){
        super.noteState(obj);
        if(obj == getApplication()){
            setLabelTextAndResize();
            GridView gv = getView();
            GVSquawkHost properParent = getHostUIObject(gv);
            if(properParent == null) return;
            if(properParent != getLooseParent()){
                if(getLooseParent() != null){
                    getLooseParent().removeLoosePiece(this);
                }
                properParent.addLoosePiece(this);
                properParent.resetGVApplicationPositions();
            }
        } 
        repaint();
    }
    
    public String toString(){
        return getClass().getSimpleName() + " (" + getApplication() + ")";
    }
}