content split problem

Flow
1

Hello,
I have started a new application in which when i run the application in netbeans it shows:

Requested resource [VAADIN/themes/myTheme/favicon.ico]
not found from filesystem or through class loader. Add widgetset and/or theme JAR to your classpath or add files to WebContent/VAADIN folder.

Requested resource [VAADIN/themes/myTheme/favicon.ico]
not found from filesystem or through class loader. Add widgetset and/or theme JAR to your classpath or add files to WebContent/VAADIN folder.

Here is my code:


StockTrading.java

/*

  • To change this template, choose Tools | Templates
  • and open the template in the editor.
    */

import com.vaadin.Application;
import com.vaadin.ui.Label;
import com.vaadin.ui.Panel;
import com.vaadin.ui.SplitPanel;
import com.vaadin.ui.Window;

/**
*

  • @author Ankit
    */
    public class StockTrading extends Application {

    Window mainWindow = null;
    SplitPanel contentSplit = null;
    Panel stockPanel = null;
    Label label = new Label(“STOCK TRADING ACCOUNTING”);
    StockForm sf = null;

    @Override
    public void init() {

     setTheme("myTheme");
 mainWindow = new Window("Stock Trading");
 
 sf = new StockForm();

 stockPanel = new Panel("STOCK ENTRY FORM");
 stockPanel.setHeight("100%");
 stockPanel.setContent(sf.makeStockForm());

 System.out.println("After Form");
 contentSplit = new SplitPanel(SplitPanel.ORIENTATION_VERTICAL);


 
 contentSplit.setSplitPosition(30);
 contentSplit.setFirstComponent(label);
 contentSplit.setSecondComponent(stockPanel);

 System.out.println("after completion");
 
  mainWindow.addComponent(contentSplit);
 setMainWindow(mainWindow);

    }

}


StockForm.java

import com.vaadin.ui.TextField;
import com.vaadin.ui.VerticalLayout;

/*

  • To change this template, choose Tools | Templates
  • and open the template in the editor.
    */

/**
*

  • @author Ankit
    */
    public class StockForm {

    VerticalLayout formVert = null;
    VerticalLayout contractDetailsGrid = null;
    TextField contract_no = null;
    TextField contract_date = null;
    OptionGroupsExample op = null;

    public VerticalLayout makeStockForm() {

     formVert = new VerticalLayout();

 op = new OptionGroupsExample();

 System.out.println("After Option");
 contractDetailsGrid = new VerticalLayout();
 contractDetailsGrid.setCaption("Contract Details");


 contract_no = new TextField("Contract Note #");
 contract_date = new TextField("Contract Date");
 
 contractDetailsGrid.addComponent(contract_no);
 contractDetailsGrid.addComponent(contract_date);
 contractDetailsGrid.addComponent(op);
 
 formVert.addComponent(contractDetailsGrid);

 return formVert;

    }

    public static void main(String args){
    StockForm stf = new StockForm();
    stf.makeStockForm();

    }
    public void setFormReadOnly(boolean readOnly) {
    contract_no.setReadOnly(readOnly);
    contract_date.setReadOnly(readOnly);

    }

}


OptionGroupsExample.java

import java.util.Arrays;
import java.util.List;

import com.vaadin.data.Property;
import com.vaadin.data.Property.ValueChangeEvent;
import com.vaadin.ui.AbstractSelect.Filtering;
import com.vaadin.ui.ComboBox;
import com.vaadin.ui.GridLayout;
import com.vaadin.ui.OptionGroup;
import com.vaadin.ui.PopupDateField;
import com.vaadin.ui.TextField;
import com.vaadin.ui.VerticalLayout;

@SuppressWarnings(“serial”)
public class OptionGroupsExample extends VerticalLayout implements Property.ValueChangeListener {

GridLayout option = null;
GridLayout stk = null;
GridLayout opt = null;
GridLayout fut = null;
GridLayout amount = null;
VerticalLayout main = null;
private static final List<String> stock_option = Arrays.asList(new String[] {
        "FUTIDX", "OPTIDX", "FUTSTK", "OPTSTK", "STK" });
private static final String[] stock_name = new String[]

{ “Bank of Rajasthan”, “RIL”,
“RCOMM”, “Ranbaxy”, “Indian OIL”, “Infosys”, “Wipro” };
private static final String index_type = new String
{ “Nifty”, “BSE” };
private static final String stock_type = new String
{ “Nifty”, “BSE” };
private static final String trade_type = new String
{ “Buy”, “Sell” };
private PopupDateField datetime;
TextField qty = null;
TextField price = null;
TextField stp = null;

public OptionGroupsExample() {
    option = new GridLayout(5,1);
    opt = new GridLayout(3,1);
    stk = new GridLayout(1,1);
    fut = new GridLayout(2,1);
    amount = new GridLayout(2,1);

    option.setSpacing(true);

    // 'Shorthand' constructor - also supports data binding using Containers
    OptionGroup citySelect = new OptionGroup("Select", stock_option);

    System.out.println("this is option");
    citySelect.setNullSelectionAllowed(false); // user can not 'unselect'
    citySelect.select("FUTIDX"); // select this by default
    citySelect.setImmediate(true); // send the change to the server at once
    citySelect.addListener(this); // react when the user selects something

    option.addComponent(citySelect);

    setSpacing(true);
    addComponent(option);

}

/*
 * Shows a notification when a selection is made. The listener will be
 * called whenever the value of the component changes, i.e when the user
 * makes a new selection.
 */
public void valueChange(ValueChangeEvent event) {
    option.getWindow().showNotification("Selected Type: " + event.getProperty());

    if (event.getProperty().toString().equals("STK")){
        ComboBox trade = new ComboBox("Trade Type");
        for (int i = 0; i < trade_type.length; i++) {
            trade.addItem(trade_type[i]

);
}
trade.setFilteringMode(Filtering.FILTERINGMODE_OFF);
trade.setImmediate(true);

        stk.addComponent(trade);

        ComboBox desc = new ComboBox("Select");
        for (int i = 0; i < stock_name.length; i++) {
            desc.addItem(stock_name[i]

);
}
desc.setFilteringMode(Filtering.FILTERINGMODE_OFF);
desc.setImmediate(true);

        stk.addComponent(desc);
        qty = new TextField("Quantity");
        price = new TextField("Price");

        amount.addComponent(qty);
        amount.addComponent(price);
        addComponent(stk);
        addComponent(amount);
        
    }else if (event.getProperty().toString().equals("FUTIDX")){
        ComboBox trade = new ComboBox("Trade Type");
        for (int i = 0; i < trade_type.length; i++) {
            trade.addItem(trade_type[i]

);
}
trade.setFilteringMode(Filtering.FILTERINGMODE_OFF);
trade.setImmediate(true);

        fut.addComponent(trade);

        ComboBox desc = new ComboBox("Select");
        for (int i = 0; i < index_type.length; i++) {
            desc.addItem(index_type[i]

);
}
desc.setFilteringMode(Filtering.FILTERINGMODE_OFF);
desc.setImmediate(true);

        fut.addComponent(desc);
        datetime = new PopupDateField("Expiration Date:");
        datetime.setValue(new java.util.Date());
        datetime.setResolution(PopupDateField.RESOLUTION_DAY);
        datetime.setImmediate(true);
        fut.addComponent(datetime);

        qty = new TextField("Quantity");
        price = new TextField("Price");

        amount.addComponent(qty);
        amount.addComponent(price);

        addComponent(fut);
        addComponent(amount);
        
    }else if (event.getProperty().toString().equals("OPTIDX")){
        ComboBox trade = new ComboBox("Trade Type");
        for (int i = 0; i < trade_type.length; i++) {
            trade.addItem(trade_type[i]

);
}
trade.setFilteringMode(Filtering.FILTERINGMODE_OFF);
trade.setImmediate(true);

        opt.addComponent(trade);

        ComboBox desc = new ComboBox("Select");
        for (int i = 0; i < index_type.length; i++) {
            desc.addItem(index_type[i]

);
}
desc.setFilteringMode(Filtering.FILTERINGMODE_OFF);
desc.setImmediate(true);

        opt.addComponent(desc);
        datetime = new PopupDateField("Expiration Date:");
        datetime.setValue(new java.util.Date());
        datetime.setResolution(PopupDateField.RESOLUTION_DAY);
        datetime.setImmediate(true);
        opt.addComponent(datetime);

        stp = new TextField("Strike Price");
        opt.addComponent(stp);

        qty = new TextField("Quantity");
        price = new TextField("Price");

        amount.addComponent(qty);
        amount.addComponent(price);

        addComponent(opt);
        addComponent(amount);

    }else if (event.getProperty().toString().equals("FUTSTK")){
        ComboBox trade = new ComboBox("Trade Type");
        for (int i = 0; i < trade_type.length; i++) {
            trade.addItem(trade_type[i]

);
}
trade.setFilteringMode(Filtering.FILTERINGMODE_OFF);
trade.setImmediate(true);

        fut.addComponent(trade);

        ComboBox desc = new ComboBox("Select");
        for (int i = 0; i < stock_type.length; i++) {
            desc.addItem(stock_type[i]

);
}
desc.setFilteringMode(Filtering.FILTERINGMODE_OFF);
desc.setImmediate(true);

        fut.addComponent(desc);
        datetime = new PopupDateField("Expiration Date:");
        datetime.setValue(new java.util.Date());
        datetime.setResolution(PopupDateField.RESOLUTION_DAY);
        datetime.setImmediate(true);
        fut.addComponent(datetime);

        qty = new TextField("Quantity");
        price = new TextField("Price");

        amount.addComponent(qty);
        amount.addComponent(price);

        addComponent(fut);
        addComponent(amount);

    }else if (event.getProperty().toString().equals("OPTSTK")){
        ComboBox trade = new ComboBox("Trade Type");
        for (int i = 0; i < trade_type.length; i++) {
            trade.addItem(trade_type[i]

);
}
trade.setFilteringMode(Filtering.FILTERINGMODE_OFF);
trade.setImmediate(true);

        opt.addComponent(trade);

        ComboBox desc = new ComboBox("Select");
        for (int i = 0; i < stock_type.length; i++) {
            desc.addItem(stock_type[i]

);
}
desc.setFilteringMode(Filtering.FILTERINGMODE_OFF);
desc.setImmediate(true);

        opt.addComponent(desc);
        datetime = new PopupDateField("Expiration Date:");
        datetime.setValue(new java.util.Date());
        datetime.setResolution(PopupDateField.RESOLUTION_DAY);
        datetime.setImmediate(true);
        opt.addComponent(datetime);

        stp = new TextField("Strike Price");
        opt.addComponent(stp);

        qty = new TextField("Quantity");
        price = new TextField("Price");

        amount.addComponent(qty);
        amount.addComponent(price);

        addComponent(opt);
        addComponent(amount);

    }



}

public void main(String args[]){
    OptionGroupsExample og = new OptionGroupsExample();
    
}

}

when i run it it will show grey color blank page.
Please help me out .

Thanks is advance

2

Hi Vikas,

The two warnings shown in the console for “favicon.ico” do not affect the funtionality of your application. You only should provide a favicon (the website icon shown in the address field of the browser) for your theme, since Vaadin searches that by default.

Other than that, I did not go through your code, but I’m suspecting that you have some sort of invalid layout configuration that results in zero sized components and thus an empty screen.

Try adding
?debug
 parameter after your application url (e.g.
http://localhost:8080/MyApp?debug
) and click “Analyze layouts” button from the debug window and see if you get any errors.

And BTW, this is not really a theme issue :wink: