SashFormAdvanced.java Source code

Introduction

Here is the source code for SashFormAdvanced.java

Source

//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();
    }
}