Demonstrates CTabFolder : Tab « SWT JFace Eclipse « Java

1. Java
2. SWT JFace Eclipse
3. Tab

Demonstrates CTabFolder

//Send questions, comments, bug reports, etc. to the authors:

//Rob Warner (rwarner@interspatial.com)
//Robert Harris (rbrt_harris@yahoo.com)

import org.eclipse.swt.*;
import org.eclipse.swt.custom.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;

/**
 * This class demonstrates CTabFolder
 */
public class ShowCTabFolder {
  // Since CTabFolder does not have a getInsertMark() method,
  // store the value so we can keep track of it
  private int insertMark = -1;
  private CTabFolder tabFolder;

  /**
   * Runs the application
   */
  public void run() {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setText("Show CTabFolder");
    createContents(shell);
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }
    }
    display.dispose();
  }

  /**
   * Creates the window's contents
   * 
   * @param shell the parent shell
   */
  private void createContents(Shell shell) {
    shell.setLayout(new GridLayout(1, true));

    // Create the buttons to create tabs
    Composite composite = new Composite(shell, SWT.NONE);
    composite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
    composite.setLayout(new RowLayout());
    createButtons(composite);

    // Create the tabs
    tabFolder = new CTabFolder(shell, SWT.TOP);
    tabFolder.setBorderVisible(true);
    tabFolder.setLayoutData(new GridData(GridData.FILL_BOTH));
    Display display = shell.getDisplay();

    // Set up a gradient background for the selected tab
    tabFolder.setSelectionBackground(new Color[] {
        display.getSystemColor(SWT.COLOR_WIDGET_DARK_SHADOW),
        display.getSystemColor(SWT.COLOR_WIDGET_NORMAL_SHADOW),
        display.getSystemColor(SWT.COLOR_WIDGET_LIGHT_SHADOW)}, new int[] { 50,
        100});

    // Add a listener to get the close button on each tab
    tabFolder.addCTabFolderListener(new CTabFolderAdapter() {
      public void itemClosed(CTabFolderEvent event) {}
    });
  }

  /**
   * Creates the buttons for moving the insert mark and adding a tab
   * 
   * @param composite the parent composite
   */
  private void createButtons(Composite composite) {
    // Move mark left
    Button button = new Button(composite, SWT.PUSH);
    button.setText("<<");
    button.addSelectionListener(new SelectionAdapter() {
      public void widgetSelected(SelectionEvent event) {
        if (insertMark > -1) {
          --insertMark;
          resetInsertMark();
        }
      }
    });

    // Move mark right
    button = new Button(composite, SWT.PUSH);
    button.setText(">>");
    button.addSelectionListener(new SelectionAdapter() {
      public void widgetSelected(SelectionEvent event) {
        if (insertMark < tabFolder.getItemCount() - 1) {
          ++insertMark;
          resetInsertMark();
        }
      }
    });

    // Add a tab
    button = new Button(composite, SWT.PUSH);
    button.setText("Add Tab");
    button.addSelectionListener(new SelectionAdapter() {
      public void widgetSelected(SelectionEvent event) {
        new CTabItem(tabFolder, SWT.NONE, insertMark + 1).setText("Tab ("
            + (insertMark + 1) + ")");
      }
    });
  }

  /**
   * Moves the insert mark to the new location
   */
  private void resetInsertMark() {
    tabFolder.setInsertMark(insertMark, true);

    // Workaround for bug #32846
    if (insertMark == -1) {
      tabFolder.redraw();
    }
  }

  /**
   * The application entry point
   * 
   * @param args the command line arguments
   */
  public static void main(String[] args) {
    new ShowCTabFolder().run();
  }
}


           
       

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4.	Tabbed Example
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6.	Create a CTabFolder with min and max buttons, as well as close button and
7.	Prevent an item from closing
8.	Prevent Tab from traversing out of a control
9.	Set the tab traversal order of children
10.	implement tab traversal (behave like a tab group)