swingset2.java~3~

主要为一个空间信息管理系统

        createToolTipMenuItem(toolTipMenu, "ToolTipMenu.off_label",
                "ToolTipMenu.off_mnemonic",
                "ToolTipMenu.off_accessible_description",
                new ToolTipAction(this, false));
        }


	// ***** create the multiscreen menu, if we have multiple screens
    if (!isApplet()) {
        GraphicsDevice[] screens = GraphicsEnvironment.
                                    getLocalGraphicsEnvironment().
                                    getScreenDevices();
        if (screens.length > 1) {

            JMenu multiScreenMenu = (JMenu) menuBar.add(new JMenu(
                                     getString("MultiMenu.multi_label")));

            multiScreenMenu.setMnemonic(getMnemonic("MultiMenu.multi_mnemonic"));
            multiScreenMenu.getAccessibleContext().setAccessibleDescription(
             getString("MultiMenu.multi_accessible_description"));

            createMultiscreenMenuItem(multiScreenMenu, MultiScreenAction.ALL_SCREENS);
            for (int i = 0; i < screens.length; i++) {
                createMultiscreenMenuItem(multiScreenMenu, i);
            }
        }
    }

	return menuBar;
    }

    /**
     * Create the tool tip submenu
     */
    public JMenuItem createToolTipMenuItem(JMenu menu, String label,
                                           String mnemonic,
                                           String accessibleDescription,
                                           Action action) {
        JRadioButtonMenuItem mi = (JRadioButtonMenuItem)menu.add(
                new JRadioButtonMenuItem(getString(label)));
        toolTipMenuGroup.add(mi);
        mi.setMnemonic(getMnemonic(mnemonic));
        mi.getAccessibleContext().setAccessibleDescription(getString(
                accessibleDescription));
        mi.addActionListener(action);

        return mi;
    }

    /**
     * Create the theme's audio submenu
     */
    public JMenuItem createAudioMenuItem(JMenu menu, String label,
					 String mnemonic,
					 String accessibleDescription,
					 Action action) {
        JRadioButtonMenuItem mi = (JRadioButtonMenuItem) menu.add(new JRadioButtonMenuItem(getString(label)));
	audioMenuGroup.add(mi);
	mi.setMnemonic(getMnemonic(mnemonic));
	mi.getAccessibleContext().setAccessibleDescription(getString(accessibleDescription));
	mi.addActionListener(action);

	return mi;
    }

    /**
     * Creates a generic menu item
     */
    public JMenuItem createMenuItem(JMenu menu, String label, String mnemonic,
			       String accessibleDescription, Action action) {
        JMenuItem mi = (JMenuItem) menu.add(new JMenuItem(getString(label)));
	mi.setMnemonic(getMnemonic(mnemonic));
	mi.getAccessibleContext().setAccessibleDescription(getString(accessibleDescription));
	mi.addActionListener(action);
	if(action == null) {
	    mi.setEnabled(false);
	}
	return mi;
    }

    /**
     * Creates a JRadioButtonMenuItem for the Themes menu
     */
    public JMenuItem createThemesMenuItem(JMenu menu, String label, String mnemonic,
			       String accessibleDescription, DefaultMetalTheme theme) {
        JRadioButtonMenuItem mi = (JRadioButtonMenuItem) menu.add(new JRadioButtonMenuItem(getString(label)));
	themesMenuGroup.add(mi);
	mi.setMnemonic(getMnemonic(mnemonic));
	mi.getAccessibleContext().setAccessibleDescription(getString(accessibleDescription));
	mi.addActionListener(new ChangeThemeAction(this, theme));

	return mi;
    }

    /**
     * Creates a JRadioButtonMenuItem for the Look and Feel menu
     */
    public JMenuItem createLafMenuItem(JMenu menu, String label, String mnemonic,
			       String accessibleDescription, String laf) {
        JMenuItem mi = (JRadioButtonMenuItem) menu.add(new JRadioButtonMenuItem(getString(label)));
	lafMenuGroup.add(mi);
	mi.setMnemonic(getMnemonic(mnemonic));
	mi.getAccessibleContext().setAccessibleDescription(getString(accessibleDescription));
	mi.addActionListener(new ChangeLookAndFeelAction(this, laf));

	mi.setEnabled(isAvailableLookAndFeel(laf));

	return mi;
    }

    /**
     * Creates a multi-screen menu item
     */
    public JMenuItem createMultiscreenMenuItem(JMenu menu, int screen) {
        JMenuItem mi = null;
        if (screen == MultiScreenAction.ALL_SCREENS) {
            mi = (JMenuItem) menu.add(new JMenuItem(getString("MultiMenu.all_label")));
            mi.setMnemonic(getMnemonic("MultiMenu.all_mnemonic"));
            mi.getAccessibleContext().setAccessibleDescription(getString(
                                                                 "MultiMenu.all_accessible_description"));
        }
        else {
            mi = (JMenuItem) menu.add(new JMenuItem(getString("MultiMenu.single_label") + " " +
                                                                                                 screen));
            mi.setMnemonic(KeyEvent.VK_0 + screen);
            mi.getAccessibleContext().setAccessibleDescription(getString(
                                               "MultiMenu.single_accessible_description") + " " + screen);

        }
        mi.addActionListener(new MultiScreenAction(this, screen));
        return mi;
    }

    public JPopupMenu createPopupMenu() {
 	JPopupMenu popup = new JPopupMenu("JPopupMenu demo");

 	createPopupMenuItem(popup, "LafMenu.java_label", "LafMenu.java_mnemonic",
			    "LafMenu.java_accessible_description", metal);

 	createPopupMenuItem(popup, "LafMenu.mac_label", "LafMenu.mac_mnemonic",
			    "LafMenu.mac_accessible_description", mac);

 	createPopupMenuItem(popup, "LafMenu.motif_label", "LafMenu.motif_mnemonic",
			    "LafMenu.motif_accessible_description", motif);

 	createPopupMenuItem(popup, "LafMenu.windows_label", "LafMenu.windows_mnemonic",
			    "LafMenu.windows_accessible_description", windows);

	createPopupMenuItem(popup, "LafMenu.gtk_label", "LafMenu.gtk_mnemonic",
			    "LafMenu.gtk_accessible_description", gtk);

 	// register key binding to activate popup menu
 	InputMap map = getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW);
 	map.put(KeyStroke.getKeyStroke(KeyEvent.VK_SPACE, InputEvent.CTRL_MASK),
 		"postMenuAction");
 	getActionMap().put("postMenuAction", new ActivatePopupMenuAction(this, popup));

 	return popup;
    }

    /**
     * Creates a JMenuItem for the Look and Feel popup menu
     */
    public JMenuItem createPopupMenuItem(JPopupMenu menu, String label, String mnemonic,
 					 String accessibleDescription, String laf) {
	JMenuItem mi = menu.add(new JMenuItem(getString(label)));
	popupMenuGroup.add(mi);
 	mi.setMnemonic(getMnemonic(mnemonic));
 	mi.getAccessibleContext().setAccessibleDescription(getString(accessibleDescription));
 	mi.addActionListener(new ChangeLookAndFeelAction(this, laf));
 	mi.setEnabled(isAvailableLookAndFeel(laf));

 	return mi;
    }


    /**
     * Load the first demo. This is done separately from the remaining demos
     * so that we can get SwingSet2 up and available to the user quickly.
     */
    public void preloadFirstDemo() {
	DemoModule demo = addDemo(new InternalFrameDemo(this));
	setDemo(demo);
    }


    /**
     * Add a demo to the toolbar
     */
    public DemoModule addDemo(DemoModule demo) {
	demosVector.addElement(demo);
	// do the following on the gui thread
	SwingUtilities.invokeLater(new SwingSetRunnable(this, demo) {
	    public void run() {
		SwitchToDemoAction action = new SwitchToDemoAction(swingset, (DemoModule) obj);
		JToggleButton tb = swingset.getToolBar().addToggleButton(action);
		swingset.getToolBarGroup().add(tb);
		if(swingset.getToolBarGroup().getSelection() == null) {
		    tb.setSelected(true);
		}
		tb.setText(null);
		tb.setToolTipText(((DemoModule)obj).getToolTip());

		if(demos[demos.length-1].equals(obj.getClass().getName())) {
 		    setStatus(getString("Status.popupMenuAccessible"));
		}

	    }
	});
	return demo;
    }


    /**
     * Sets the current demo
     */
    public void setDemo(DemoModule demo) {
	currentDemo = demo;

	// Ensure panel's UI is current before making visible
	JComponent currentDemoPanel = demo.getDemoPanel();
	SwingUtilities.updateComponentTreeUI(currentDemoPanel);

	demoPanel.removeAll();
	demoPanel.add(currentDemoPanel, BorderLayout.CENTER);

	tabbedPane.setSelectedIndex(0);
	tabbedPane.setTitleAt(0, demo.getName());
	tabbedPane.setToolTipTextAt(0, demo.getToolTip());
    }


    /**
     * Bring up the SwingSet2 demo by showing the frame (only
     * applicable if coming up as an application, not an applet);
     */
    public void showSwingSet2() {
	if(!isApplet() && getFrame() != null) {
	    // put swingset in a frame and show it
	    JFrame f = getFrame();
	    f.setTitle(getString("Frame.title"));
	    f.getContentPane().add(this, BorderLayout.CENTER);
	    f.pack();

	    Rectangle screenRect = f.getGraphicsConfiguration().getBounds();
            Insets screenInsets = Toolkit.getDefaultToolkit().getScreenInsets(
                    f.getGraphicsConfiguration());

            // Make sure we don't place the demo off the screen.
            int centerWidth = screenRect.width < f.getSize().width ?
                    screenRect.x :
                    screenRect.x + screenRect.width/2 - f.getSize().width/2;
            int centerHeight = screenRect.height < f.getSize().height ?
                    screenRect.y :
                    screenRect.y + screenRect.height/2 - f.getSize().height/2;

            centerHeight = centerHeight < screenInsets.top ?
                    screenInsets.top : centerHeight;

            f.setLocation(centerWidth, centerHeight);
	    f.show();
            numSSs++;
            swingSets.add(this);
	}
    }

    /**
     * Show the spash screen while the rest of the demo loads
     */
    public void createSplashScreen() {
	splashLabel = new JLabel(createImageIcon("Splash.jpg", "Splash.accessible_description"));

	if(!isApplet()) {
	    splashScreen = new JWindow(getFrame());
	    splashScreen.getContentPane().add(splashLabel);
	    splashScreen.pack();
	    Rectangle screenRect = getFrame().getGraphicsConfiguration().getBounds();
	    splashScreen.setLocation(
         screenRect.x + screenRect.width/2 - splashScreen.getSize().width/2,
		 screenRect.y + screenRect.height/2 - splashScreen.getSize().height/2);
	}
    }

    public void showSplashScreen() {
	if(!isApplet()) {
	    splashScreen.show();
	} else {
	    add(splashLabel, BorderLayout.CENTER);
	    validate();
	    repaint();
	}
    }

    /**
     * pop down the spash screen
     */
    public void hideSplash() {
	if(!isApplet()) {
	    splashScreen.setVisible(false);
	    splashScreen = null;
	    splashLabel = null;
	}
    }

    // *******************************************************
    // ****************** Utility Methods ********************
    // *******************************************************

    /**
     * Loads a demo from a classname
     */
    void loadDemo(String classname) {
	setStatus(getString("Status.loading") + getString(classname + ".name"));
	DemoModule demo = null;
	try {
	    Class demoClass = Class.forName(classname);
	    Constructor demoConstructor = demoClass.getConstructor(new Class[]{SwingSet2.class});
	    demo = (DemoModule) demoConstructor.newInstance(new Object[]{this});
	    addDemo(demo);
	} catch (Exception e) {
	    System.out.println("Error occurred loading demo: " + classname);
	}
    }

    /**
     * A utility function that layers on top of the LookAndFeel's
     * isSupportedLookAndFeel() method. Returns true if the LookAndFeel
     * is supported. Returns false if the LookAndFeel is not supported
     * and/or if there is any kind of error checking if the LookAndFeel
     * is supported.
     *
     * The L&F menu will use this method to detemine whether the various
     * L&F options should be active or inactive.
     *
     */
     protected boolean isAvailableLookAndFeel(String laf) {
         try {
             Class lnfClass = Class.forName(laf);
             LookAndFeel newLAF = (LookAndFeel)(lnfClass.newInstance());
             return newLAF.isSupportedLookAndFeel();
         } catch(Exception e) { // If ANYTHING weird happens, return false
             return false;
         }
     }


    /**
     * Determines if this is an applet or application
     */
    public boolean isApplet() {
	return (applet != null);
    }

    /**
     * Returns the applet instance
     */
    public SwingSet2Applet getApplet() {
	return applet;
    }


    /**
     * Returns the frame instance
     */
    public JFrame getFrame() {
	return frame;
    }

    /**
     * Returns the menubar
     */
    public JMenuBar getMenuBar() {
	return menuBar;
    }

    /**
     * Returns the toolbar
     */
    public ToggleButtonToolBar getToolBar() {
	return toolbar;
    }

    /**
     * Returns the toolbar button group
     */
    public ButtonGroup getToolBarGroup() {
	return toolbarGroup;
    }

    /**
     * Returns the content pane wether we're in an applet
     * or application
     */
    public Container getContentPane() {
	if(contentPane == null) {
	    if(getFrame() != null) {
		contentPane = getFrame().getContentPane();
	    } else if (getApplet() != null) {
		contentPane = getApplet().getContentPane();
	    }
	}
	return contentPane;
    }

    /**
     * Create a frame for SwingSet2 to reside in if brought up
     * as an application.
     */
    public static JFrame createFrame(GraphicsConfiguration gc) {
	JFrame frame = new JFrame(gc);
        if (numSSs == 0) {
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        } else {
	    WindowListener l = new WindowAdapter() {
	        public void windowClosing(WindowEvent e) {
                    numSSs--;
                    swingSets.remove(this);
	        }
	    };
	    frame.addWindowListener(l);
        }
	return frame;
    }


    /**
     * Set the status
     */
    public void setStatus(String s) {
	// do the following on the gui thread
	SwingUtilities.invokeLater(new SwingSetRunnable(this, s) {
	    public void run() {
		swingset.statusField.setText((String) obj);
	    }
	});
    }


    /**
     * This method returns a string from the demo's resource bundle.
     */