Unable to find SWT forum, so posting here

thanks,

I guess i havent specified the problem clearly. Actually its not only about traversing from login page to next page. When user logs in , the next page has table and if user clicks one of the row in the table, it will load the information of the selected row on the same page. Now thats what which i actually want to achieve. So dialog is not an option :( ..

was so easy in swings , but SWT dont know who to achieve :(

Pankaj

pbhomiaa at 2007-7-13 23:42:22 >

I am posting a sample code in which from LoginPage i have to go to a TestPage . I guess if i will achieve this, i can achieve the table. Right now, I am getting SWTException : Subclassing not allowed when i press enter key in the password field. Ideally , it should display a TestPage when i press "ENTER" hey in PASSWORD field. here are the files:

//LoginPagenew.java

package com.qwest.bpm.swt.designer;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.KeyAdapter;

import org.eclipse.swt.events.KeyEvent;

import org.eclipse.swt.layout.FormAttachment;

import org.eclipse.swt.layout.FormData;

import org.eclipse.swt.layout.FormLayout;

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.Group;

import org.eclipse.swt.widgets.Label;

import org.eclipse.swt.widgets.Shell;

import org.eclipse.swt.widgets.Text;

public class LoginPageNew {

private Shell shell;

public LoginPageNew() {

super();

}

public static void main(String[] args) {

new LoginPageNew().initialize();

}

protected void checkSubClass() {

}

private void initialize(){

Display display = new Display();

shell = new Shell(display);

shell.setText("QBPM");

shell.setMaximized(true);

this.setupWidgets(display, shell);

shell.pack();

shell.open ();

while (!shell.isDisposed ()) {

if (!display.readAndDispatch ()) display.sleep ();

}

display.dispose();

}

private void setupWidgets(Display display, Shell shell){

final Display newDisplay = display;

FormLayout formlayout = new FormLayout();

shell.setLayout(formlayout);

Composite gridComp = new Composite(shell, SWT.NONE);

GridLayout gridLayout = new GridLayout();

gridLayout.numColumns = 2;

gridComp.setLayout(gridLayout);

final Group group = new Group(gridComp, SWT.NONE);

group.setText("Credentials");

Label label1 = new Label(group, SWT.NONE);

label1.setText("User Name");

label1.setBounds(60, 60, 120, 20);

Text username = new Text(group, SWT.BORDER);

username.setBounds(200, 60, 120, 20);

Label label2 = new Label(group, SWT.NONE);

label2.setText("Password");

label2.setBounds(60, 90, 120, 20);

Text password = new Text(group, SWT.BORDER);

password.setEchoChar('*');

password.setBounds(200, 90, 120, 20);

password.addKeyListener(new KeyAdapter() {

public void keyPressed(KeyEvent e) {

// close the text editor and copy the data over

// when the user hits "ENTER"

if (e.character == SWT.CR) {

System.out.println("Enter is pressed kya");

TestPage form = new TestPage(LoginPageNew.this.shell);

form.show();

}

}});

Label label3 = new Label(group, SWT.NONE);

label3.setText("JNDI Server URL");

label3.setBounds(60, 120, 120, 20);

Text serverurl = new Text(group, SWT.BORDER);

serverurl.setText("t3://localhost:7001");

serverurl.setBounds(200, 120, 120, 20);

Label label4 = new Label(group, SWT.NONE);

label4.setText("Designer Server");

label4.setBounds(60, 150, 120, 20);

Text servername = new Text(group, SWT.BORDER);

servername.setText("com.qwest.bpm.designerserver.DesignerServerRemoteHome");

servername.setBounds(200, 150, 240, 20);

Label label5 = new Label(group, SWT.NONE);

label5.setText("Database");

label5.setBounds(60, 180, 120, 20);

Button database = new Button(group,SWT.RADIO);

database.setBounds(200, 180, 120, 20);

database.setText("MDW");

Button login = new Button(group,SWT.PUSH);

login.setBounds(150, 240, 120, 25);

login.setText("Login");

//login.addSelectionListener(page);

FormData formGrid = new FormData();

formGrid.top = new FormAttachment(0,120);

formGrid.left = new FormAttachment(0,150);

//formGrid.right = new FormAttachment(100,-10);

//formGrid.bottom = new FormAttachment(10);

gridComp.setLayoutData(formGrid);

}

}

//TestPage.java

package com.qwest.bpm.swt.designer;

import org.eclipse.swt.SWT;

import org.eclipse.swt.layout.FillLayout;

import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.widgets.Group;

import org.eclipse.swt.widgets.Label;

import org.eclipse.swt.widgets.Shell;

import org.eclipse.swt.widgets.Text;

public class TestPage extends Shell{

private Shell shell = null;

private Text firstName = null;

private Display display;

public TestPage(Shell arg0) {

this(arg0, SWT.APPLICATION_MODAL);

}

/**

* @param arg0

* @param arg1

*/

public TestPage(Shell arg0, int arg1) {

super(arg0, arg1);

}

protected void checkSubClass() {

}

public void show(){

shell = new Shell(display);

shell.setText("Edit");

shell.setLayout(new FillLayout());

//new Button(shell,SWT.PUSH).setText("Go");

this.initWidgets();

shell.pack();

shell.open();

//Display display = new Display();

while (!shell.isDisposed()) {

if (!display.readAndDispatch())

display.sleep();

}

}

public void initWidgets(){

Group group = new Group(shell, SWT.NONE);

group.setText("Person");

GridLayout layout = new GridLayout();

layout.numColumns=2;

group.setLayout(layout);

new Label(group, SWT.SHADOW_OUT).setText("FirstName");

firstName = new Text(group, SWT.BORDER);

firstName.setText("Pankaj Bhomia");

}

}

pbhomiaa at 2007-7-13 23:42:22 >

Hopefully this link will provide some more context on that error:

http://www.awprofessional.com/articles/article.asp?p=354574&seqNum=2&rl=1

Adding the checkSubclass method should clear up the exception you've cited. You'll get another one shortly after but it should be more easily addressed.

Hope this helps.

KPSeala at 2007-7-13 23:42:22 >

Yeah, I myself noticed this late that display has to be set which I have done. Also I am very close to achieve what i want. Actually in TestPage, instead of creating new Shell , I am using this.getShell() . This is bringing the TestPage on the same Shell.

The change is in show() method of TestPage :

public void show(){

shell = this.getShell();

shell.setText("Edit");

shell.setLayout(new FillLayout());

//new Button(shell,SWT.PUSH).setText("Go");

this.initWidgets();

//shell.pack();

shell.open();

Display display = this.getParent().getDisplay();

while (!shell.isDisposed()) {

if (!display.readAndDispatch())

display.sleep();

}

}

-

If u run the code using this new show() method, it will display on the same Shell but the previous loginPage is not removed yet . I want to clear the pprevious contents of the shell. Does the Shell class provide any way to remove its contents? I looked into SWT api but havent got anything concrete.

By the way, thanks for the pain u taking to solve the issue :)

Pankaj

pbhomiaa at 2007-7-13 23:42:22 >