Demonstrates SashForm Advanced : SashForm « SWT JFace Eclipse « Java

1. Java
2. SWT JFace Eclipse
3. SashForm

Demonstrates SashForm Advanced

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

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

import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.SashForm;
import org.eclipse.swt.events.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;

/**
 * This class demonstrates SashForm
 */
public class SashFormAdvanced {
  /**
   * Runs the application
   */
  public void run() {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setText("SashForm Advanced");
    createContents(shell);
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }
    }
    display.dispose();
  }

  /**
   * Creates the main window's contents
   * 
   * @param parent the parent window
   */
  private void createContents(Composite parent) {
    // Our layout will have a row of buttons, and
    // then a SashForm below it.
    parent.setLayout(new GridLayout(1, false));

    // Create the row of buttons
    Composite buttonBar = new Composite(parent, SWT.NONE);
    buttonBar.setLayout(new RowLayout());
    Button flip = new Button(buttonBar, SWT.PUSH);
    flip.setText("Switch Orientation");
    Button weights = new Button(buttonBar, SWT.PUSH);
    weights.setText("Restore Weights");

    // Create the SashForm
    Composite sash = new Composite(parent, SWT.NONE);
    sash.setLayout(new FillLayout());
    sash.setLayoutData(new GridData(GridData.FILL_BOTH));
    final SashForm sashForm = new SashForm(sash, SWT.HORIZONTAL);

    // Change the width of the sashes
    sashForm.SASH_WIDTH = 20;

    // Change the color used to paint the sashes
    sashForm.setBackground(parent.getDisplay().getSystemColor(SWT.COLOR_GREEN));

    // Create the buttons and their event handlers
    final Button one = new Button(sashForm, SWT.PUSH);
    one.setText("One");
    one.addSelectionListener(new SelectionAdapter() {
      public void widgetSelected(SelectionEvent event) {
        maximizeHelper(one, sashForm);
      }
    });

    final Button two = new Button(sashForm, SWT.PUSH);
    two.setText("Two");
    two.addSelectionListener(new SelectionAdapter() {
      public void widgetSelected(SelectionEvent event) {
        maximizeHelper(two, sashForm);
      }
    });

    final Button three = new Button(sashForm, SWT.PUSH);
    three.setText("Three");
    three.addSelectionListener(new SelectionAdapter() {
      public void widgetSelected(SelectionEvent event) {
        maximizeHelper(three, sashForm);
      }
    });

    // Set the relative weights for the buttons
    sashForm.setWeights(new int[] { 1, 2, 3});

    // Add the Switch Orientation functionality
    flip.addSelectionListener(new SelectionAdapter() {
      public void widgetSelected(SelectionEvent event) {
        switch (sashForm.getOrientation()) {
        case SWT.HORIZONTAL:
          sashForm.setOrientation(SWT.VERTICAL);
          break;
        case SWT.VERTICAL:
          sashForm.setOrientation(SWT.HORIZONTAL);
          break;
        }
      }
    });

    // Add the Restore Weights functionality
    weights.addSelectionListener(new SelectionAdapter() {
      public void widgetSelected(SelectionEvent event) {
        sashForm.setWeights(new int[] { 1, 2, 3});
      }
    });
  }

  /**
   * Helper method for our maximize behavior. If the passed control is already
   * maximized, restore it. Otherwise, maximize it
   * 
   * @param control the control to maximize or restore
   * @param sashForm the parent SashForm
   */
  private void maximizeHelper(Control control, SashForm sashForm) {
    // See if the control is already maximized
    if (control == sashForm.getMaximizedControl()) {
      // Already maximized; restore it
      sashForm.setMaximizedControl(null);
    } else {
      // Not yet maximized, so maximize it
      sashForm.setMaximizedControl(control);
    }
  }

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


           
       

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