Java/SWT JFace Eclipse/Status Bar

SWT Status Bar Demo

/*
SWT/JFace in Action
GUI Design with Eclipse 3.0
Matthew Scarpino, Stephen Holder, Stanford Ng, and Laurent Mihalkovic
ISBN: 1932394273
Publisher: Manning
*/

import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.ActionContributionItem;
import org.eclipse.jface.action.MenuManager;
import org.eclipse.jface.action.StatusLineManager;
import org.eclipse.jface.action.ToolBarManager;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.window.ApplicationWindow;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.ruposite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
public class Ch4_Contributions extends ApplicationWindow {
  StatusLineManager slm = new StatusLineManager();
  Ch4_StatusAction status_action = new Ch4_StatusAction(slm);
  ActionContributionItem aci = new ActionContributionItem(status_action);
  public Ch4_Contributions() {
    super(null);
    addStatusLine();
    addMenuBar();
    addToolBar(SWT.FLAT | SWT.WRAP);
  }
  protected Control createContents(Composite parent) {
    getShell().setText("Action/Contribution Example");
    parent.setSize(290, 150);
    aci.fill(parent);
    return parent;
  }
  public static void main(String[] args) {
    Ch4_Contributions swin = new Ch4_Contributions();
    swin.setBlockOnOpen(true);
    swin.open();
    Display.getCurrent().dispose();
  }
  protected MenuManager createMenuManager() {
    MenuManager main_menu = new MenuManager(null);
    MenuManager action_menu = new MenuManager("Menu");
    main_menu.add(action_menu);
    action_menu.add(status_action);
    return main_menu;
  }
  protected ToolBarManager createToolBarManager(int style) {
    ToolBarManager tool_bar_manager = new ToolBarManager(style);
    tool_bar_manager.add(status_action);
    return tool_bar_manager;
  }
  protected StatusLineManager createStatusLineManager() {
    return slm;
  }
}
class Ch4_StatusAction extends Action {
  StatusLineManager statman;
  short triggercount = 0;
  public Ch4_StatusAction(StatusLineManager sm) {
    super("&Trigger@Ctrl+T", AS_PUSH_BUTTON);
    statman = sm;
    setToolTipText("Trigger the Action");
    setImageDescriptor(ImageDescriptor.createFromFile(this.getClass(),
        "eclipse.gif"));
  }
  public void run() {
    triggercount++;
    statman.setMessage("The status action has fired. Count: "
        + triggercount);
  }
}

Update a status line (Statusbar) when the pointer enters a ToolItem

/*
 * ToolBar example snippet: update a status line when the pointer enters a ToolItem
 *
 * For a list of all SWT example snippets see
 * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
 */
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseMoveListener;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.ToolBar;
import org.eclipse.swt.widgets.ToolItem;
public class Snippet153 {
  static String statusText = "";
  public static void main(String[] args) {
    final Display display = new Display();
    Shell shell = new Shell(display);
    shell.setBounds(10, 10, 200, 200);
    final ToolBar bar = new ToolBar(shell, SWT.BORDER);
    bar.setBounds(10, 10, 150, 50);
    final Label statusLine = new Label(shell, SWT.BORDER);
    statusLine.setBounds(10, 90, 150, 30);
    new ToolItem(bar, SWT.NONE).setText("item 1");
    new ToolItem(bar, SWT.NONE).setText("item 2");
    new ToolItem(bar, SWT.NONE).setText("item 3");
    bar.addMouseMoveListener(new MouseMoveListener() {
      public void mouseMove(MouseEvent e) {
        ToolItem item = bar.getItem(new Point(e.x, e.y));
        String name = "";
        if (item != null) {
          name = item.getText();
        }
        if (!statusText.equals(name)) {
          statusLine.setText(name);
          statusText = name;
        }
      }
    });
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }
}

Update a status line when an item is armed

/*
 * Control example snippet: update a status line when an item is armed
 *
 * For a list of all SWT example snippets see
 * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
 */
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.swt.widgets.Shell;
public class Snippet152 {
  public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    FormLayout layout = new FormLayout();
    shell.setLayout(layout);
    final Label label = new Label(shell, SWT.BORDER);
    Listener armListener = new Listener() {
      public void handleEvent(Event event) {
        MenuItem item = (MenuItem) event.widget;
        label.setText(item.getText());
        label.update();
      }
    };
    Listener showListener = new Listener() {
      public void handleEvent(Event event) {
        Menu menu = (Menu) event.widget;
        MenuItem item = menu.getParentItem();
        if (item != null) {
          label.setText(item.getText());
          label.update();
        }
      }
    };
    Listener hideListener = new Listener() {
      public void handleEvent(Event event) {
        label.setText("");
        label.update();
      }
    };
    FormData labelData = new FormData();
    labelData.left = new FormAttachment(0);
    labelData.right = new FormAttachment(100);
    labelData.bottom = new FormAttachment(100);
    label.setLayoutData(labelData);
    Menu menuBar = new Menu(shell, SWT.BAR);
    shell.setMenuBar(menuBar);
    MenuItem fileItem = new MenuItem(menuBar, SWT.CASCADE);
    fileItem.setText("File");
    fileItem.addListener(SWT.Arm, armListener);
    MenuItem editItem = new MenuItem(menuBar, SWT.CASCADE);
    editItem.setText("Edit");
    editItem.addListener(SWT.Arm, armListener);
    Menu fileMenu = new Menu(shell, SWT.DROP_DOWN);
    fileMenu.addListener(SWT.Hide, hideListener);
    fileMenu.addListener(SWT.Show, showListener);
    fileItem.setMenu(fileMenu);
    String[] fileStrings = { "New", "Close", "Exit" };
    for (int i = 0; i < fileStrings.length; i++) {
      MenuItem item = new MenuItem(fileMenu, SWT.PUSH);
      item.setText(fileStrings[i]);
      item.addListener(SWT.Arm, armListener);
    }
    Menu editMenu = new Menu(shell, SWT.DROP_DOWN);
    editMenu.addListener(SWT.Hide, hideListener);
    editMenu.addListener(SWT.Show, showListener);
    String[] editStrings = { "Cut", "Copy", "Paste" };
    editItem.setMenu(editMenu);
    for (int i = 0; i < editStrings.length; i++) {
      MenuItem item = new MenuItem(editMenu, SWT.PUSH);
      item.setText(editStrings[i]);
      item.addListener(SWT.Arm, armListener);
    }
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }
}