SimpleBrowser.java Source code

Introduction

Here is the source code for SimpleBrowser.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.browser.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;

/**
 * This class implements a web browser
 */
public class SimpleBrowser {
    /**
     * Runs the application
     */
    public void run() {
        Display display = new Display();
        Shell shell = new Shell(display);
        shell.setText("Simple Browser");
        createContents(shell);
        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch()) {
                display.sleep();
            }
        }
        display.dispose();
    }

    /**
     * Creates the main window's contents
     * 
     * @param shell the main window
     */
    private void createContents(Shell shell) {
        shell.setLayout(new FormLayout());

        // Create the composite to hold the buttons and text field
        Composite controls = new Composite(shell, SWT.NONE);
        FormData data = new FormData();
        data.top = new FormAttachment(0, 0);
        data.left = new FormAttachment(0, 0);
        data.right = new FormAttachment(100, 0);
        controls.setLayoutData(data);

        // Create the web browser
        final Browser browser = new Browser(shell, SWT.NONE);
        data = new FormData();
        data.top = new FormAttachment(controls);
        data.bottom = new FormAttachment(100, 0);
        data.left = new FormAttachment(0, 0);
        data.right = new FormAttachment(100, 0);
        browser.setLayoutData(data);

        // Create the controls and wire them to the browser
        controls.setLayout(new GridLayout(6, false));

        // Create the back button
        Button button = new Button(controls, SWT.PUSH);
        button.setText("Back");
        button.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent event) {
                browser.back();
            }
        });

        // Create the forward button
        button = new Button(controls, SWT.PUSH);
        button.setText("Forward");
        button.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent event) {
                browser.forward();
            }
        });

        // Create the refresh button
        button = new Button(controls, SWT.PUSH);
        button.setText("Refresh");
        button.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent event) {
                browser.refresh();
            }
        });

        // Create the stop button
        button = new Button(controls, SWT.PUSH);
        button.setText("Stop");
        button.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent event) {
                browser.stop();
            }
        });

        // Create the address entry field and set focus to it
        final Text url = new Text(controls, SWT.BORDER);
        url.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
        url.setFocus();

        // Create the go button
        button = new Button(controls, SWT.PUSH);
        button.setText("Go");
        button.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent event) {
                browser.setUrl(url.getText());
            }
        });

        // Allow users to hit enter to go to the typed URL
        shell.setDefaultButton(button);
    }

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