OnJava8-Examples/swt/TabbedPane.java

// swt/TabbedPane.java
// (c)2016 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
// Placing SWT components in tabbed panes.
import swt.util.*;
import org.eclipse.swt.*;
import org.eclipse.swt.widgets.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.browser.*;

public class TabbedPane implements SWTApplication {
  private static TabFolder folder;
  private static Shell shell;
  @Override
  public void createContents(Composite parent) {
    shell = parent.getShell();
    parent.setLayout(new FillLayout());
    folder = new TabFolder(shell, SWT.BORDER);
    labelTab();
    directoryDialogTab();
    buttonTab();
    sliderTab();
    scribbleTab();
    browserTab();
  }
  public static void labelTab() {
    TabItem tab = new TabItem(folder, SWT.CLOSE);
    tab.setText("A Label"); // Text on the tab
    tab.setToolTipText("A simple label");
    Label label = new Label(folder, SWT.CENTER);
    label.setText("Label text");
    tab.setControl(label);
  }
  public static void directoryDialogTab() {
    TabItem tab = new TabItem(folder, SWT.CLOSE);
    tab.setText("Directory Dialog");
    tab.setToolTipText("Select a directory");
    final Button b = new Button(folder, SWT.PUSH);
    b.setText("Select a Directory");
    b.addListener(SWT.MouseDown, new Listener() {
        public void handleEvent(Event e) {
          DirectoryDialog dd = new DirectoryDialog(shell);
          String path = dd.open();
          if(path != null)
            b.setText(path);
        }
      });
    tab.setControl(b);
  }
  public static void buttonTab() {
    TabItem tab = new TabItem(folder, SWT.CLOSE);
    tab.setText("Buttons");
    tab.setToolTipText("Different kinds of Buttons");
    Composite composite = new Composite(folder, SWT.NONE);
    composite.setLayout(new GridLayout(4, true));
    for(int dir : new int[]{
        SWT.UP, SWT.RIGHT, SWT.LEFT, SWT.DOWN
      }) {
      Button b = new Button(composite, SWT.ARROW | dir);
      b.addListener(SWT.MouseDown, listener);
    }
    newButton(composite, SWT.CHECK, "Check button");
    newButton(composite, SWT.PUSH, "Push button");
    newButton(composite, SWT.RADIO, "Radio button");
    newButton(composite, SWT.TOGGLE, "Toggle button");
    newButton(composite, SWT.FLAT, "Flat button");
    tab.setControl(composite);
  }
  private static Listener listener = new Listener() {
      public void handleEvent(Event e) {
        MessageBox m = new MessageBox(shell, SWT.OK);
        m.setMessage(e.toString());
        m.open();
      }
    };
  private static void newButton(Composite composite,
    int type, String label) {
    Button b = new Button(composite, type);
    b.setText(label);
    b.addListener(SWT.MouseDown, listener);
  }
  public static void sliderTab() {
    TabItem tab = new TabItem(folder, SWT.CLOSE);
    tab.setText("Sliders and Progress bars");
    tab.setToolTipText("Tied Slider to ProgressBar");
    Composite composite = new Composite(folder, SWT.NONE);
    composite.setLayout(new GridLayout(2, true));
    final Slider slider =
      new Slider(composite, SWT.HORIZONTAL);
    final ProgressBar progress =
      new ProgressBar(composite, SWT.HORIZONTAL);
    slider.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
          progress.setSelection(slider.getSelection());
        }
      });
    tab.setControl(composite);
  }
  public static void scribbleTab() {
    TabItem tab = new TabItem(folder, SWT.CLOSE);
    tab.setText("Scribble");
    tab.setToolTipText("Simple graphics: drawing");
    final Canvas canvas = new Canvas(folder, SWT.NONE);
    ScribbleMouseListener sml= new ScribbleMouseListener();
    canvas.addMouseListener(sml);
    canvas.addMouseMoveListener(sml);
    tab.setControl(canvas);
  }
  private static class ScribbleMouseListener
    extends MouseAdapter implements MouseMoveListener {
    private Point p = new Point(0, 0);
    public void mouseMove(MouseEvent e) {
      if((e.stateMask & SWT.BUTTON1) == 0)
        return;
      GC gc = new GC((Canvas)e.widget);
      gc.drawLine(p.x, p.y, e.x, e.y);
      gc.dispose();
      updatePoint(e);
    }
    public void mouseDown(MouseEvent e) { updatePoint(e); }
    private void updatePoint(MouseEvent e) {
      p.x = e.x;
      p.y = e.y;
    }
  }
  public static void browserTab() {
    TabItem tab = new TabItem(folder, SWT.CLOSE);
    tab.setText("A Browser");
    tab.setToolTipText("A Web browser");
    Browser browser = null;
    try {
      browser = new Browser(folder, SWT.NONE);
    } catch(SWTError e) {
      Label label = new Label(folder, SWT.BORDER);
      label.setText("Could not initialize browser");
      tab.setControl(label);
    }
    if(browser != null) {
      browser.setUrl("http://www.MindviewInc.com");
      tab.setControl(browser);
    }
  }
  public static void main(String[] args) {
    SWTConsole.run(new TabbedPane(), 800, 600);
  }
}