Use ListWidget

[malpi]

Hi there,

i have problems by using the ListWidget...

I have created a Widget, to map the entity, and refeer to it in the ListWidget. As soon as I add the first Element, the application only shows a blank page.

Probably I am doing something wrong...

ClassListWidget.java

package de.coderebell.tts.client.local.widget; 

import java.util.ArrayList; 
import java.util.LinkedList; 
import java.util.List; 

import javax.annotation.PostConstruct; 
import javax.inject.Inject; 

import org.jboss.errai.ui.client.widget.ListWidget; 
import org.jboss.errai.ui.shared.api.annotations.DataField; 
import org.jboss.errai.ui.shared.api.annotations.Templated; 

import com.google.gwt.user.client.ui.Composite; 

import de.coderebell.tts.client.domain.SchoolClass; 

@Templated(value = "ClassListWidget.html#body") 
public class ClassListWidget extends Composite { 

    @Inject 
    @DataField 
    private ListWidget<SchoolClass, ClassWidget> classSelect; 

    @PostConstruct 
    public void init() { 
        // Somehow defunct 
        List<SchoolClass> result = new ArrayList(); 
        SchoolClass klasse = new SchoolClass(); 
        klasse.setClassName("Testklasse"); 
        klasse.setJahrgang(1987); 
        klasse.setKlassenId(1); 
        result.add(klasse); 
        classSelect.setItems(result); 
    } 
}

ClassListWidget.html

<div id="wrap" data-field="body">
<select data-field="classSelect"/>
</div>

ClassWidget.html

<div id="wrap" data-field="body">
<input data-field="klassenId" type="text"/>
<input data-field="className" type="text"/>
<input data-field="jahrgang" type="text"/>
</div>

ClassWidget.java

package de.coderebell.tts.client.local.widget; 

import javax.inject.Inject; 

import org.jboss.errai.databinding.client.api.DataBinder; 
import org.jboss.errai.ui.client.widget.HasModel; 
import org.jboss.errai.ui.shared.api.annotations.AutoBound; 
import org.jboss.errai.ui.shared.api.annotations.Bound; 
import org.jboss.errai.ui.shared.api.annotations.DataField; 
import org.jboss.errai.ui.shared.api.annotations.Templated; 

import com.google.gwt.user.client.ui.Composite; 
import com.google.gwt.user.client.ui.TextBox; 

import de.coderebell.tts.client.domain.SchoolClass; 

@Templated(value = "ClassWidget.html#body") 
public class ClassWidget extends Composite implements HasModel<SchoolClass> { 

    @Inject 
    @AutoBound 
    private DataBinder<SchoolClass> classBinder; 

    @Inject 
    @Bound 
    @DataField 
    private TextBox klassenId; 

    @Inject 
    @Bound 
    @DataField 
    private TextBox className; 

    @Inject 
    @Bound 
    @DataField 
    private TextBox jahrgang; 

    @Override 
    public SchoolClass getModel() { 
        return classBinder.getModel(); 
    } 

    @Override 
    public void setModel(SchoolClass model) { 
        classBinder.setModel(model); 
    } 
}

Thanks in advance,

Malte

[mbarkley]

Hi Malte,

I can't see anything wrong at first glance. Do you get any errors in the console or the development mode window?

[malpi]

Hi Max,

not at all... I just get a blank Page when I try to access the application. When I use the ClassWidget without the List, everything is working perfectly...