Hi,
I played a little bit with ZK and Tapestry this morning and I achieved
something quite nice : I succeeded in inserting a ZK component in
Tapestry page, and this component can call Tapestry actions.
Here is how to do it :
1) Install ZK :
2) The Tapestry Component that allows including any ZK component :
public class ZkComponent {
@Parameter(required = true, defaultPrefix = BindingConstants.LITERAL)
private String name;
@Inject
private RequestGlobals requestGlobals;
@Inject
private ComponentResources resources;
boolean setupRender(MarkupWriter writer) throws ServletException,
IOException {
HttpServletRequest request = requestGlobals.getHTTPServletRequest();
HttpServletResponse response = requestGlobals.getHTTPServletResponse();
request.setAttribute("resources", resources);
request.setAttribute("id", resources.getId());
CharResponseWrapper body = new CharResponseWrapper(response);
request.getRequestDispatcher(name + ".zul").include(request, body);
writer.writeRaw(body.toString());
return true;
}
public class CharResponseWrapper extends HttpServletResponseWrapper {
private CharArrayWriter output;
public String toString() {
return output.toString();
}
public CharResponseWrapper(HttpServletResponse response) {
super(response);
output = new CharArrayWriter();
}
public PrintWriter getWriter() {
return new PrintWriter(output);
}
}
}
3) Use in Tapestry page :
<t:ZkComponent t:id="testId" name="test"/>
This will insert the test.zul component
4) ZK component with the Tapestry call :
This component is a button. When you click on it, it fires an event to call the
Tapestry action displaying a JSONArray("This is a test : ", param); param
beeing the button name.
<zk>
<button id="${id}" label="Try" onClick="sendEventOnAction()"/>
<zscript>
import org.apache.tapestry5.ComponentEventCallback;
import org.apache.tapestry5.ComponentResources;
import org.apache.tapestry5.internal.util.Holder;
ComponentResources resources = execution.getAttribute("resources");
// Get button with id
String id = execution.getAttribute("id");
Button btm = spaceOwner.getFellow(id);
void sendEventOnAction(){
Object result = onAction();
alert("result = " + result);
btm.label="ok";
}
Object onAction() {
// Manage trigger result
final Holder holder = Holder.create();
ComponentEventCallback callback =
new ComponentEventCallback() {
public boolean handleResult(Object result) {
holder.put(result);
return true;
}
};
// Run event
resources.triggerEvent("action", new Object[] {btm.label},
callback);
return holder.get();
}
</zscript>
</zk>
5) Tapestry action
Object onAction(String param) {
return new JSONArray("This is a test : ", param);
}
I also tried with different ZK components, it seems to work pretty fine.
I hope this can help some people.
Best Regards,
Julien & Jean for translating :D
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