I'm playing around with the showcase example. I created a class
similar to all the others which extent ContentWidget. It is working
fine as long as I don't use Annotations like @ShowcaseSource. Then I
get errors. Why?
package com.google.gwt.sample.showcase.client.content.ep;
import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.RunAsyncCallback;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.i18n.client.Constants;
import com.google.gwt.sample.showcase.client.ContentWidget;
import
com.google.gwt.sample.showcase.client.ShowcaseAnnotations.ShowcaseData;
import
com.google.gwt.sample.showcase.client.ShowcaseAnnotations.ShowcaseSource;
import
com.google.gwt.sample.showcase.client.ShowcaseAnnotations.ShowcaseStyle;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Widget;
/**
* Example file.
*/
@ShowcaseStyle(".gwt-German-Punkt")
public class EpGermanPunkt extends ContentWidget {
/**
* The constants used in this Content Widget.
*/
@ShowcaseSource
public static interface CwConstants extends Constants {
String cwEpGermanPunktClickMessage();
String cwEpGermanPunktDescription();
String cwEpGermanPunktDisabled();
String cwEpGermanPunktName();
String cwEpGermanPunktNormal();
}
/**
* An instance of the constants.
*/
@ShowcaseData
private final CwConstants constants;
/**
* Constructor.
*
* @param constants the constants
*/
public EpGermanPunkt(CwConstants constants) {
super(constants.cwEpGermanPunktName(), constants
.cwEpGermanPunktDescription(), true);
this.constants = constants;
}
/**
* Initialize this example.
*/
@ShowcaseSource
@Override
public Widget onInitialize() {
HorizontalPanel hPanel = new HorizontalPanel();
hPanel.setSpacing(10);
// Add a normal button
Button normalButton = new Button(
constants.cwEpGermanPunktNormal(), new ClickHandler() {
public void onClick(ClickEvent event) {
Window.alert(constants.cwEpGermanPunktClickMessage());
}
});
normalButton.ensureDebugId("cwEpGermanPunkt-normal");
hPanel.add(normalButton);
// Return the panel
return hPanel;
}
@Override
protected void asyncOnInitialize(final AsyncCallback<Widget>
callback) {
// TODO Auto-generated method stub
GWT.runAsync(EpGermanPunkt.class, new RunAsyncCallback() {
public void onFailure(Throwable caught) {
callback.onFailure(caught);
}
public void onSuccess() {
callback.onSuccess(onInitialize());
}
});
}
}
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