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SWT Browser



/*******************************************************************************
 * All Right Reserved. Copyright (c) 1998, 2004 Jackwind Li Guojie
 * 
 * Created on 2004-4-10 1:15:03 by JACK $Id$
 *  
 ******************************************************************************/



import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.ToolBarManager;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.browser.Browser;
import org.eclipse.swt.browser.CloseWindowListener;
import org.eclipse.swt.browser.LocationEvent;
import org.eclipse.swt.browser.LocationListener;
import org.eclipse.swt.browser.OpenWindowListener;
import org.eclipse.swt.browser.ProgressEvent;
import org.eclipse.swt.browser.ProgressListener;
import org.eclipse.swt.browser.StatusTextEvent;
import org.eclipse.swt.browser.StatusTextListener;
import org.eclipse.swt.browser.TitleEvent;
import org.eclipse.swt.browser.TitleListener;
import org.eclipse.swt.browser.VisibilityWindowListener;
import org.eclipse.swt.browser.WindowEvent;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.ProgressBar;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.eclipse.swt.widgets.ToolBar;

public class SWTBrowser {
  Display display = new Display();
  Shell shell = new Shell(display);

  Text textLocation;

  Browser browser;

  Label labelStatus;

  public SWTBrowser() {
    shell.setLayout(new GridLayout());

    ToolBar toolBar = new ToolBar(shell, SWT.FLAT | SWT.RIGHT);
    final ToolBarManager manager = new ToolBarManager(toolBar);

    Composite compositeLocation = new Composite(shell, SWT.NULL);
    compositeLocation.setLayout(new GridLayout(3, false));
    compositeLocation.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

    Label labelAddress = new Label(compositeLocation, SWT.NULL);
    labelAddress.setText("Address");

    textLocation = new Text(compositeLocation, SWT.SINGLE | SWT.BORDER);
    textLocation.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

    Button buttonGo = new Button(compositeLocation, SWT.NULL);
    buttonGo.setImage(new Image(shell.getDisplay(), "java2s.gif"));

    browser = new Browser(shell, SWT.BORDER);
    browser.setLayoutData(new GridData(GridData.FILL_BOTH));

    Composite compositeStatus = new Composite(shell, SWT.NULL);
    compositeStatus.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
    compositeStatus.setLayout(new GridLayout(2, false));

    labelStatus = new Label(compositeStatus, SWT.NULL);
    labelStatus.setText("Ready");
    labelStatus.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

    final ProgressBar progressBar =
      new ProgressBar(compositeStatus, SWT.SMOOTH);

    Listener openURLListener = new Listener() {
      public void handleEvent(Event event) {
        browser.setUrl(textLocation.getText());
      }
    };

    buttonGo.addListener(SWT.Selection, openURLListener);
    textLocation.addListener(SWT.DefaultSelection, openURLListener);

    // Adds tool bar items using actions.
    final Action actionBackward =
      new Action(
        "&Backword",
        ImageDescriptor.createFromFile(
          null,
          "java2s.gif")) {
      public void run() {
        browser.back();
      }
    };
    actionBackward.setEnabled(false); // action is disabled at start up.

    final Action actionForward =
      new Action(
        "&Forward",
        ImageDescriptor.createFromFile(
          null,
          "icons/web/forward.gif")) {
      public void run() {
        browser.forward();
      }
    };
    actionForward.setEnabled(false); // action is disabled at start up.

    Action actionStop =
      new Action(
        "&Stop",
        ImageDescriptor.createFromFile(null, "icons/web/stop.gif")) {
      public void run() {
        browser.stop();
      }
    };

    Action actionRefresh =
      new Action(
        "&Refresh",
        ImageDescriptor.createFromFile(
          null,
          "icons/web/refresh.gif")) {
      public void run() {
        browser.refresh();
      }
    };

    Action actionHome =
      new Action(
        "&Home",
        ImageDescriptor.createFromFile(null, "icons/web/home.gif")) {
      public void run() {
        browser.setUrl("http://www.eclipse.org");
      }
    };

    manager.add(actionBackward);
    manager.add(actionForward);
    manager.add(actionStop);
    manager.add(actionRefresh);
    manager.add(actionHome);

    manager.update(true);
    toolBar.pack();

    browser.addLocationListener(new LocationListener() {
      public void changing(LocationEvent event) {
        // Displays the new location in the text field.
        textLocation.setText(event.location);
      }

      public void changed(LocationEvent event) {
        // Update tool bar items.
        actionBackward.setEnabled(browser.isBackEnabled());
        actionForward.setEnabled(browser.isForwardEnabled());
        manager.update(false);
      }
    });

    browser.addProgressListener(new ProgressListener() {
      public void changed(ProgressEvent event) {
        progressBar.setMaximum(event.total);
        progressBar.setSelection(event.current);
      }

      public void completed(ProgressEvent event) {
        progressBar.setSelection(0);
      }
    });

    browser.addStatusTextListener(new StatusTextListener() {
      public void changed(StatusTextEvent event) {
        labelStatus.setText(event.text);
      }
    });

    browser.addTitleListener(new TitleListener() {
      public void changed(TitleEvent event) {
        shell.setText(event.title + " - powered by SWT");
      }
    });

    initialize(display, browser);

    shell.setSize(500, 400);
    shell.open();
    //textUser.forceFocus();

    //browser.setText(
    //  "<html><body>" + "<h1>SWT &amp; JFace </h1>" + "</body/html>");

    // Set up the event loop.
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        // If no more entries in event queue
        display.sleep();
      }
    }

    display.dispose();
  }

  static void initialize(final Display display, Browser browser) {
    browser.addOpenWindowListener(new OpenWindowListener() {
      public void open(WindowEvent event) {
        Shell shell = new Shell(display);
        shell.setText("New Window");
        shell.setLayout(new FillLayout());
        Browser browser = new Browser(shell, SWT.NONE);
        initialize(display, browser);
        event.browser = browser;
      }
    });
    browser.addVisibilityWindowListener(new VisibilityWindowListener() {
      public void hide(WindowEvent event) {
        Browser browser = (Browser) event.widget;
        Shell shell = browser.getShell();
        shell.setVisible(false);
      }
      public void show(WindowEvent event) {
        Browser browser = (Browser) event.widget;
        Shell shell = browser.getShell();
        if (event.location != null)
          shell.setLocation(event.location);
        if (event.size != null) {
          Point size = event.size;
          shell.setSize(shell.computeSize(size.x, size.y));
        }
        shell.open();
      }
    });
    browser.addCloseWindowListener(new CloseWindowListener() {
      public void close(WindowEvent event) {
        Browser browser = (Browser) event.widget;
        Shell shell = browser.getShell();
        shell.close();
      }
    });
  }

  private void init() {

  }

  public static void main(String[] args) {
    new SWTBrowser();
  }
}

           
       










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