org.eclipse.swt.snippets.Snippet317.java Source code

Introduction

Here is the source code for org.eclipse.swt.snippets.Snippet317.java

Source

/*******************************************************************************
 * Copyright (c) 2000, 2016 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.swt.snippets;

/*
 * Browser example snippet: provide credentials for a basic authentication challenge
 *
 * Note that the KNOWN_HOST, KNOWN_USER and KNOWN_PASSWORD fields in the snippet
 * below require valid values in order to fully demonstrate the functionality.
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 *
 * @since 3.5
 */
import java.net.*;

import org.eclipse.swt.*;
import org.eclipse.swt.browser.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;

public class Snippet317 {

    static String KNOWN_HOST = "www.eclipse.org";
    static String KNOWN_USER = "anonymous";
    static String KNOWN_PASSWORD = "anonymousPassword";

    public static void main(String[] args) {
        Display display = new Display();
        final Shell shell = new Shell(display);
        shell.setText("Snippet 317");
        GridLayout gridLayout = new GridLayout();
        gridLayout.numColumns = 2;
        shell.setLayout(gridLayout);
        final Text location = new Text(shell, SWT.BORDER);
        GridData data = new GridData();
        data.horizontalAlignment = GridData.FILL;
        data.grabExcessHorizontalSpace = true;
        location.setLayoutData(data);
        Button go = new Button(shell, SWT.PUSH);
        go.setText("Go");

        final Browser browser;
        try {
            browser = new Browser(shell, SWT.NONE);
        } catch (SWTError e) {
            System.out.println("Could not instantiate Browser: " + e.getMessage());
            display.dispose();
            return;
        }
        data = new GridData();
        data.horizontalAlignment = data.verticalAlignment = GridData.FILL;
        data.grabExcessHorizontalSpace = data.grabExcessVerticalSpace = true;
        data.horizontalSpan = 2;
        browser.setLayoutData(data);
        browser.setUrl("eclipse.org");
        browser.addLocationListener(new LocationAdapter() {
            @Override
            public void changed(LocationEvent event) {
                location.setText(event.location);
            }
        });

        Listener navigateListener = event -> browser.setUrl(location.getText());
        go.addListener(SWT.Selection, navigateListener);
        location.addListener(SWT.DefaultSelection, navigateListener);

        browser.addAuthenticationListener(event -> {
            try {
                URL url = new URL(event.location);
                if (url.getHost().equals(KNOWN_HOST)) {
                    event.user = KNOWN_USER;
                    event.password = KNOWN_PASSWORD;
                } else {
                    /* do nothing, let default prompter run */
                }
            } catch (MalformedURLException e) {
                /* should not happen, let default prompter run */
            }
        });

        shell.setBounds(10, 10, 500, 500);
        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch())
                display.sleep();
        }
        display.dispose();
    }

}