DJ NativeSwing - reloaded: JWebBrowser, JFlashPlayer, JVLCPlayer, JHTMLEditor.

Andrew, 

1. Supported platforms include Windows, Linux, and potentially other platforms where SWT is supported and allows to integrate SWT components in Swing.

Linux was missing because this summary was for DJ Project - Native Integration, which is the first project that I did which was part of the DJ Project. I just added Linux to follow your suggestion. Thanks! 

About the SWT library, the download distribution is already quite big, so I decided to only ship the SWT library for Windows. For Linux, I explain in the readme file to simply place "swt.jar" in the classpath (by default the library looks up for "swt.jar" and falls back to the Windows version).

2. I will see if I should place another Sourceforge Link, or make it more visible.

Thanks a lot for your comments! 

-Christopher

Jeff,

I investigated the browser-based approach to the PDF reader, and I have a few conclusions:

• There are only few methods to act on the plugin that are interesting (show/hide toolbar, set zoom level).
• These few methods only seem to work when the browser is IE.

Based on these findings, I believe it is not worth creating a new component (JPDFReader or whatever), but achieve the same result with:

JWebBrowser webBrowser = new JWebBrowser();
webBrowser.setBarsVisible(false);
webBrowser.setURL(pdfPathOrURL);

-Christopher

Actually, most MicroSoft office documents(Word, PowerPoint...) will work too, I mean, in IE.

[quote=chrriis]

Jeff,

I investigated the browser-based approach to the PDF reader, and I have a few conclusions:

• There are only few methods to act on the plugin that are interesting (show/hide toolbar, set zoom level).
• These few methods only seem to work when the browser is IE.

Based on these findings, I believe it is not worth creating a new component (JPDFReader or whatever), but achieve the same result with:

JWebBrowser webBrowser = new JWebBrowser();
webBrowser.setBarsVisible(false);
webBrowser.setURL(pdfPathOrURL);

-Christopher

0.9.4 uses a completely different architecture, which was the only way to achieve stability.

About the cookies, it is all handled internally by the Internet Explorer / XULRunner engine, so this is not accessible. On-the-other hand, it is possible to clear all the session cookies of all instances.

executeAndWaitForCommandResult executes some JS code, and expects that code to use the command channel to message back the result.

The API of that particular call has changed between 0.9.4 and the next 0.9.5, so if you want to use the latest version, please contact me by e-mail and I would give you a preview of the 0.9.5 version.

In 0.9.4, you would do something like:

String result = browser.executeAndWaitForCommandResult("getCookies", "sendCommand('getCookies:' + [JS GetCookie code]);");

In 0.9.5, sendCommand accepts parameters. Thus the call becomes:

String result = browser.executeAndWaitForCommandResult("getCookies", "sendCommand('getCookies', [JS GetCookie code]);");

Note that this method can only return a String result.

Don't hesitate to contact me by e-mail in case you have any other questions.

Indeed, I changed the API to make it much simpler.

Before, you had to execute a script that explicitely sends a message using the commnand channel, which meant you had to add a command listener.

Now you have a method that is synchronous and returns the result, without the need to explicitely send a command:
Object JWebBrowser.executeJavascriptWithResult(String javascript).

I believe this is a much cleaner API, that does not ressemble a hack as it was before :)

-Christopher

Hi Chrriis,

           This is rameshkancherla. I am using DJ Native Swing Project. when i am sending url through jWebbrowser.setURL(url); it is working fine. url like http://www.abc.com

But i am getting one problem . when i am sending url with( cookie ) jsessionid then i am not getting response from server. i am getting only session time out.

i am appending cookie as like String url = "http://www.abc.com;JSESSIONID=123456789"

 can you please give me  suggestion  for solving my  problem.

Thanks & Regards

Ramesh K 

Hi Chrriis,

           This is rameshkancherla. I am using DJ Native Swing Project. when i am sending url through jWebbrowser.setURL(url); it is working fine. url like http://www.abc.com

But i am getting one problem . when i am sending url with( cookie ) jsessionid then i am not getting response from server. i am getting only session time out.

i am appending cookie as like String url = "http://www.abc.com;JSESSIONID=123456789"

 can you please give me  suggestion  for solving my  problem.

Thanks & Regards

Ramesh K

Hi Ramesh,

DJ NativeSwing uses the SWT browser under the hood, and it does not allow setting cookies...

On the other hand, passing query string parameters is allowed:

http://www.abc.com?JSESSIONID=123456789

but this assumes the server understands that particular parameter. If you control the server, then it might be a solution.

 -Christopher

Hi Suresh,

You could get the underlying component and attach a key listener, but I don't know if they are received so you have to try:

flashPlayer.getWebBrowser().getNativeComponent().addKeyListener(xxx);

A better approach would be to have the Flash application to listen to the key events and send a message to the Java application when it wants to close. Sending a message from a Flash application is shown in the demo. This of course means you have to have control over the Flash application code.

-Christopher

Hi Christopher,

This is Ramesh Kancherla, I am using DJ Native Swing web browser. it is working well when i attempt to use it as single browser. But my requirement is ,i need to show more than one browser screen at a time. if we do this i.e. calling DJ Browser which calls the method runeventpump to open a browser also been used more than once

Then i am getting the *************** Exception. Cant we use the DJ Browser for calling more than once.to show 2 different urls in two screens in my application?

can you please give me suggestion. 

Thanks & Regards

Ramesh K

Hi Christopher

               I am sending sample code.this code is for one screen. if i am trying to open two screens browsers i am getting error at runeventpump(). can you please give me suggestion.

 package browser;
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Toolkit;

import javax.swing.SwingUtilities;
import javax.swing.JFrame;

import chrriis.dj.nativeswing.ui.JWebBrowser;
import chrriis.dj.nativeswing.NativeInterfaceHandler;
import chrriis.dj.nativeswing.ui.event.WebBrowserAdapter;
import chrriis.dj.nativeswing.ui.event.WebBrowserEvent;
import chrriis.dj.nativeswing.ui.event.WebBrowserNavigationEvent;
import com.instacoll.livedocuments.oo.configuration.InstaConfig;
import com.instacoll.livedocuments.oo.exception.StringUtils;
import com.instacoll.livedocuments.oo.instasecuremanager.InstaSecureManager;
import com.instacoll.livedocuments.oo.miscellaneous.UserStateManager;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import java.util.logging.Level;
import javax.swing.ImageIcon;

public class AddDocumentProperties extends JFrame {

    private static Runnable xxx;
    final JFrame con = this;
    public static AddDocumentProperties AddDocProp = null;
    private static boolean bThreadStatus = false;
    private static String documentId;
        private String currenturl = "";
    private String prevurl = "";
    JWebBrowser webBrowser;

    public static AddDocumentProperties getInstance() {
        if (AddDocProp == null) {
            AddDocProp = new AddDocumentProperties(documentId);
        }
        return AddDocProp;
    }

    public AddDocumentProperties(String documentID) {
        super("Add Document Properties");
        Class<AddDocumentProperties> clazz = AddDocumentProperties.class;

        setDefaultCloseOperation(DISPOSE_ON_CLOSE);
        setLocationByPlatform(true);
        String img = InstaConfig.TRAY_ICON_IMAGE;
        img = img.substring(0, img.lastIndexOf("/"));
        setIconImage(new ImageIcon(img + "liveimg.JPG").getImage());

        Container contentPaneF = getContentPane();
        this.setSize(900, 500);

        int x = (Toolkit.getDefaultToolkit().getScreenSize().width - this.getSize().width) / 2;
        int y = (Toolkit.getDefaultToolkit().getScreenSize().height - this.getSize().height) / 2;
        this.setBounds(x, y, this.getSize().width, this.getSize().height);

        webBrowser = new JWebBrowser() {        };
        webBrowser.setMenuBarVisible(false);
        webBrowser.setButtonBarVisible(false);
        webBrowser.setAddressBarVisible(false);
        webBrowser.setStatusBarVisible(false);
//      /instasecure/displayDocumentDetailsPage.do?docId=1230941
//    webBrowser.setURL("http://www.yahoo.com");
//        /instasecure/taskAssignPage.do?docId=1233332
//        GET /instasecure/signAssignPage.do?docId=1233342
        showPage(InstaConfig.APPLICATIONURL + "displayDocumentDetailsPage.do?docId=" + documentID);
//        webBrowser.setURL(InstaConfig.APPLICATIONURL + "displayDocumentDetailsPage.do?docId=" + documentID);
        contentPaneF.add(webBrowser, BorderLayout.CENTER);
        webBrowser.addWebBrowserListener(new WebBrowserAdapter() {

            @Override
            public void commandReceived(WebBrowserEvent e, String command) {
                JWebBrowser web = (JWebBrowser) e.getSource();
                web.getURL();
            }

            @Override
            public void urlChanged(WebBrowserNavigationEvent arg0) {
                String url = arg0.getNewURL();
                if (url.equalsIgnoreCase("about:blank")) {
                } else if (url.contains("http")) {
                    showPage(url);
                } else {
                    if (url.contains("about:blank")) {
                        url = url.substring(11);
                    } else if (url.contains("blank")) {
                        url = url.substring(5);
                    }


                    if (!url.equals("")) {
                        //url = InstaConfig.APPLICATIONURL + url;    
                        url = "http://live.instacoll.com/instasecure/" + url;
                        showPage(url);
                    }

                }
            }
        });
    }

    public AddDocumentProperties() {

    }

    private void showPage(String pageUrl) {

        String inputLine;
        try {
            String cookie = UserStateManager.getInstance().getAuthKey().trim();
            System.out.println(pageUrl);
            prevurl = currenturl;
            currenturl = pageUrl;
            URL url = new URL(pageUrl);
            URLConnection conn = url.openConnection();
            conn = url.openConnection();
            conn.setRequestProperty("Cookie", cookie);
            conn.setRequestProperty("Content-type", "text/html");

            StringBuffer answer1 = new StringBuffer();
            BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            String line;
            while ((line = reader.readLine()) != null) {
                answer1.append(line);
            }
            reader.close();

//             System.out.print(answer1.toString());
            webBrowser.setText(answer1.toString());
            webBrowser.setVisible(true);

        } catch (Exception ex) {
            InstaSecureManager.logger.log(Level.SEVERE, StringUtils.getStackTrace(ex));
        }
    }
    public void showAddDocProperties(final String docID) {
        documentId = docID;

        if (AddDocProp == null) {
            if (bThreadStatus == false) {
                bThreadStatus = true;
                AddDocProp = new AddDocumentProperties(documentId);
            }
//login.setVisible(true);
            initialise(true);
        } else {
            reinit();
        }
    }

    private static void initialise(boolean bVisible) {
        final boolean bShow = bVisible;
        NativeInterfaceHandler.init();
        Toolkit.getDefaultToolkit().setDynamicLayout(true);
        xxx = new Runnable() {

            public void run() {
                try {
                    javax.swing.UIManager.setLookAndFeel("com.birosoft.liquid.LiquidLookAndFeel");
                    com.birosoft.liquid.LiquidLookAndFeel.setLiquidDecorations(true);
                } catch (Exception e) {

                }
                AddDocProp.setVisible(bShow);
            //login.setAlwaysOnTop(true);
            }
        };

        SwingUtilities.invokeLater(xxx);
            NativeInterfaceHandler.runEventPump();

    }

    private static void reinit() {
        NativeInterfaceHandler.init();
        Toolkit.getDefaultToolkit().setDynamicLayout(true);

        xxx = new Runnable() {

            public void run() {
                try {
                    javax.swing.UIManager.setLookAndFeel("com.birosoft.liquid.LiquidLookAndFeel");
                    com.birosoft.liquid.LiquidLookAndFeel.setLiquidDecorations(true);
                } catch (Exception e) {

                }

                if (bThreadStatus == false) {
                    bThreadStatus = true;
                    AddDocProp = new AddDocumentProperties(documentId);
                }

                AddDocProp.setVisible(true);


            }
        };
        SwingUtilities.invokeLater(xxx);

    }

    public static void main(String[] args) {
        AddDocumentProperties docProp = new AddDocumentProperties();
        docProp.showAddDocProperties("11221");
    }
}

 Thanks & Regads

Ramesh K 

Hi Ramesh,

Without a proper test case, it is hard for me to help you.

I would recommend you send me an e-mail ( chrriis (at) nextencia (dot) net ) when you face some issues along with a test case when it is possible. E-mails are a better way for me to keep track of this and have a focused discution.

Cheers,
-Christopher

hi

    i  m using linux mandriva 2008.1 and i using dj native jflash player but it shows message that flash plugin is not installed .

    but i have install flash plugin .it still showing same message...

                                  plz help........

  thank you