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Using eSWT Browser in Java ME

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{{Archived|timestamp=20120313125655|user=roy.debjit| }}
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[[Category:Java ME]][[Category:MIDP 2.0]][[Category:Browser]][[Category:ESWT API]][[Category:Code Examples]][[Category:Symbian]][[Category:S60 3rd Edition FP2]][[Category:S60 5th Edition]][[Category:Symbian^3]][[Category:Symbian Anna]][[Category:Nokia Belle]]
[[Category:S60 3rd Edition FP2]][[Category:Java ME]][[Category:MIDP 2.0]][[Category:eSWT]][[Category:Code Snippet]][[Category:Browser]][[Category:Code Snippet]]
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{{Abstract|This code snippet demonstrates how to use eSWT's Browser class in Java ME.}}
 
{{ArticleMetaData <!-- v1.2 -->
 
{{ArticleMetaData <!-- v1.2 -->
|sourcecode= <!-- Link to example source code (e.g. [[Media:The Code Example ZIP.zip]]) -->
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|sourcecode= [[Media:BrowserMIDletSource.zip]]
|installfile= <!-- Link to installation file (e.g. [[Media:The Installation File.sis]]) -->
+
|installfile= [[Media:BrowserMIDletBinaries.zip]]
 
|devices= S60 3rd Ed. FP2 SDK
 
|devices= S60 3rd Ed. FP2 SDK
|sdk= <!-- SDK(s) built and tested against (e.g. [http://linktosdkdownload/ Nokia Qt SDK 1.1]) -->
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|sdk= [http://www.developer.nokia.com/info/sw.nokia.com/id/ec866fab-4b76-49f6-b5a5-af0631419e9c/S60_All_in_One_SDKs.html S60 SDK 3rd Edition FP2 v1.1]
|platform= S60 3rd Edition, FP2
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|platform= S60 3rd Edition, FP2 or later
 
|devicecompatability= <!-- Compatible devices (e.g.: All* (must have GPS) ) -->
 
|devicecompatability= <!-- Compatible devices (e.g.: All* (must have GPS) ) -->
 
|dependencies= <!-- Any other/external dependencies e.g.: Google Maps Api v1.0 -->
 
|dependencies= <!-- Any other/external dependencies e.g.: Google Maps Api v1.0 -->
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|translated-from-title= <!-- Title only -->
 
|translated-from-title= <!-- Title only -->
 
|translated-from-id= <!-- Id of translated revision -->
 
|translated-from-id= <!-- Id of translated revision -->
|review-by= <!-- After re-review: [[User:username]] -->
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|review-by= [[User:skalogir]]
|review-timestamp= <!-- After re-review: YYYYMMDD -->
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|review-timestamp= 20120820
|update-by= <!-- After significant update: [[User:username]]-->
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|update-by= [[User:skalogir]]
|update-timestamp= <!-- After significant update: YYYYMMDD -->
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|update-timestamp= 20120820
 
|creationdate= 20080520
 
|creationdate= 20080520
 
|author= [[User:Jarmlaht]]
 
|author= [[User:Jarmlaht]]
 
<!-- The following are not in current metadata -->
 
<!-- The following are not in current metadata -->
|subcategory= eSWT, Browsing
 
 
|id= CS000974
 
|id= CS000974
 
}}
 
}}
 
    
 
    
 
==Overview==
 
==Overview==
 +
{{Abstract|The Browser class instance implements the browser user interface metaphor and it allows the user to visualize and navigate through HTML documents. This example has also "Back", "Forward",  and "Open URL" Commands for navigating to the previous or next session history items and for opening desired HMTL page. The MIDlet uses MobileShell, because it has a possibility to change the status pane size.}} The following section contains the complete code for compiling and running the example application.
  
This code snippet demonstrates how to use eSWT's Browser class in Java ME. The Browser class instance implements the browser user interface metaphor and it allows the user to visualize and navigate through HTML documents. This example has also "Back", "Forward",  and "Open URL" Commands for navigating to the previous or next session history items and for opening desired html page. The MIDlet uses MobileShell, because it has a possibility to change the status pane size. The following section contains the complete code for compiling and running the example application.
+
<gallery widths=240px heights=320px>
 +
File:BrowserMIDlet.jpg|A Browser-MIDlet integration
 +
File:BrowserMIDletOptions.jpg|The custom Browser with the Option menu expanded
 +
</gallery>
  
 
==Source code==
 
==Source code==
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import org.eclipse.ercp.swt.mobile.QueryDialog;
 
import org.eclipse.ercp.swt.mobile.QueryDialog;
 
import org.eclipse.ercp.swt.mobile.Command;
 
import org.eclipse.ercp.swt.mobile.Command;
 
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public class BrowserMIDlet extends MIDlet implements SelectionListener, Runnable {
 
public class BrowserMIDlet extends MIDlet implements SelectionListener, Runnable {
 
     private Command exitCommand;
 
     private Command exitCommand;
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     private boolean exiting = false;
 
     private boolean exiting = false;
 
     private int style = 2;  //MobileShell.SMALL_STATUS_PANE
 
     private int style = 2;  //MobileShell.SMALL_STATUS_PANE
     private String url = "http://forumnokia.mobi";
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     private String url = "http://www.google.com";
   
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     public void startApp() {
 
     public void startApp() {
 
         if(uiThread == null) {
 
         if(uiThread == null) {
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         }         
 
         }         
 
     }
 
     }
 
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     public void pauseApp() {
 
     public void pauseApp() {
 +
    //To do
 
     }
 
     }
 
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     public void destroyApp(boolean unconditional) {
 
     public void destroyApp(boolean unconditional) {
 
         exitEventLoop();
 
         exitEventLoop();
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         }  
 
         }  
 
         catch(InterruptedException e) {
 
         catch(InterruptedException e) {
 +
        //To do
 
         }         
 
         }         
 
     }
 
     }
   
+
 
     void exitEventLoop() {
 
     void exitEventLoop() {
 
         exiting = true;
 
         exiting = true;
 
         Display.getDefault().wake();
 
         Display.getDefault().wake();
 
     }
 
     }
 
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     public void run() {
 
     public void run() {
 
         display = new Display();
 
         display = new Display();
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         notifyDestroyed();  // exit MIDlet
 
         notifyDestroyed();  // exit MIDlet
 
     }
 
     }
 
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     public void widgetSelected(SelectionEvent e) {
 
     public void widgetSelected(SelectionEvent e) {
 
         if (e.widget.equals(exitCommand)) {
 
         if (e.widget.equals(exitCommand)) {
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         }
 
         }
 
     }
 
     }
 
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     public void widgetDefaultSelected(SelectionEvent arg0) {
 
     public void widgetDefaultSelected(SelectionEvent arg0) {
 +
    //To do
 
     }     
 
     }     
 
}
 
}
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==Postconditions==
 
==Postconditions==
  
When a {{Icode|BrowserMIDlet}} is opened, a browser window is shown on the screen. The browser will open the URL http://forumnokia.mobi.
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When a {{Icode|BrowserMIDlet}} is opened, a browser window is shown on the screen. The browser will open the URL http://www.google.com.
  
 
==See also==
 
==See also==
  
 
* [[ESWT|eSWT]]
 
* [[ESWT|eSWT]]

Revision as of 02:26, 17 September 2012

This code snippet demonstrates how to use eSWT's Browser class in Java ME.

Article Metadata
Code ExampleTested with
Devices(s): S60 3rd Ed. FP2 SDK
CompatibilityArticle
Keywords: eSWT, Browser, QueryDialog, MobileShell, MessageBox
Created: jarmlaht (20 May 2008)
Updated: skalogir (20 Aug 2012)
Reviewed: skalogir (20 Aug 2012)
Last edited: lpvalente (17 Sep 2012)

Contents

Overview

The Browser class instance implements the browser user interface metaphor and it allows the user to visualize and navigate through HTML documents. This example has also "Back", "Forward", and "Open URL" Commands for navigating to the previous or next session history items and for opening desired HMTL page. The MIDlet uses MobileShell, because it has a possibility to change the status pane size. The following section contains the complete code for compiling and running the example application.

Source code

import javax.microedition.midlet.MIDlet;
import org.eclipse.swt.SWT;
import org.eclipse.swt.SWTError;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ercp.swt.mobile.MobileShell;
import org.eclipse.swt.widgets.MessageBox;
import org.eclipse.swt.browser.Browser;
import org.eclipse.ercp.swt.mobile.QueryDialog;
import org.eclipse.ercp.swt.mobile.Command;
 
 
public class BrowserMIDlet extends MIDlet implements SelectionListener, Runnable {
private Command exitCommand;
private Command backCommand;
private Command openCommand;
private Command forwardCommand;
private Command changeCommand;
private Display display;
private MobileShell shell;
private Thread uiThread;
private Browser browser = null;
private boolean exiting = false;
private int style = 2; //MobileShell.SMALL_STATUS_PANE
private String url = "http://www.google.com";
 
public void startApp() {
if(uiThread == null) {
uiThread = new Thread(this);
uiThread.start();
}
}
 
public void pauseApp() {
//To do
}
 
public void destroyApp(boolean unconditional) {
exitEventLoop();
try {
uiThread.join();
}
catch(InterruptedException e) {
//To do
}
}
 
void exitEventLoop() {
exiting = true;
Display.getDefault().wake();
}
 
public void run() {
display = new Display();
shell = new MobileShell(display, SWT.NONE, style);
shell.setLayout(new FillLayout());
exitCommand = new Command(shell, Command.EXIT, 0);
exitCommand.setText("Exit");
exitCommand.addSelectionListener(this);
backCommand = new Command(shell, Command.BACK, 0);
backCommand.setText("Back");
backCommand.addSelectionListener(this);
forwardCommand = new Command(shell, Command.OK, 0);
forwardCommand.setText("Forward");
forwardCommand.addSelectionListener(this);
openCommand = new Command(shell, Command.OK, 1);
openCommand.setText("Enter URL");
openCommand.addSelectionListener(this);
changeCommand = new Command(shell, Command.OK, 2);
changeCommand.setText("Change status pane");
changeCommand.addSelectionListener(this);
try {
browser = new Browser(shell, SWT.NONE);
} catch (SWTError e) {
MessageBox message = new MessageBox(shell, SWT.NONE);
message.setText("SWTError: " + e.getMessage());
message.open();
}
if (browser != null) {
browser.setUrl(url);
}
shell.open();
while(!exiting) {
if(!display.readAndDispatch()) {
display.sleep();
}
}
browser.dispose(); // dispose objects
shell.dispose();
display.dispose();
notifyDestroyed(); // exit MIDlet
}
 
public void widgetSelected(SelectionEvent e) {
if (e.widget.equals(exitCommand)) {
exitEventLoop();
}
if (e.widget.equals(backCommand)) {
if (browser.isBackEnabled()) browser.back();
}
if (e.widget.equals(forwardCommand)) {
if (browser.isForwardEnabled()) browser.forward();
}
if (e.widget.equals(openCommand)) {
QueryDialog dialog = new QueryDialog(shell, SWT.NONE, QueryDialog.STANDARD);
dialog.setPromptText("Enter URL:", "http://");
url = dialog.open();
if (url != null) {
browser.setUrl(url);
shell.redraw();
} else {}
}
if (e.widget.equals(changeCommand)) {
if (style < 3) style = style + 1;
else if (style == 3) style = 1;
shell.changeTrim(SWT.SHELL_TRIM, style);
}
}
 
public void widgetDefaultSelected(SelectionEvent arg0) {
//To do
}
}

Postconditions

When a BrowserMIDlet is opened, a browser window is shown on the screen. The browser will open the URL http://www.google.com.

See also

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