org.wicketstuff.select2
Class TextChoiceProvider<T>

java.lang.Object
  org.wicketstuff.select2.ChoiceProvider<T>
      org.wicketstuff.select2.TextChoiceProvider<T>

Type Parameters:

T - type of choice object

All Implemented Interfaces:

Serializable, org.apache.wicket.model.IDetachable, org.apache.wicket.util.io.IClusterable

Direct Known Subclasses:

StringTextChoiceProvider

public abstract class TextChoiceProvider<T>
extends ChoiceProvider<T>

Takes care of Json serialization for the most common usecase where each choice is rendered as a text string.

Author:

igor

See Also:

Serialized Form

TextChoiceProvider

public TextChoiceProvider()

getDisplayText

protected abstract String getDisplayText(T choice)

getId

protected abstract Object getId(T choice)

toJson

public final void toJson(T choice,
                         org.apache.wicket.ajax.json.JSONStringer writer)
                  throws org.apache.wicket.ajax.json.JSONException

Description copied from class: ChoiceProvider

Converts the specified choice to Json.

At the very least each choice should contain an id attribute. If no custom rendering function is specified, the text attribute should also be provided

Example: If mapping a User {Long id, String name} using default rendering the code should look like this:

 toJson(User choice, JSONStringer writer)
 {
        writer.key("id").value(choice.getId()).key("text").value(choice.getName());
 }
 

Specified by:

toJson in class ChoiceProvider<T>

Parameters:

choice - choice to convert

writer - Json writer that should be used to covnert the choice

Throws:

org.apache.wicket.ajax.json.JSONException