GWTP error using SmartGWT Window and PresenterWidget - gwt

Question

I am using SmartGWT 3.0 and GWTP 0.7.
I am trying to do a simple PresenterWidget showing a SmartGWT Window. This is the code for the widget presenter:
import com.gwtplatform.mvp.client.PresenterWidget;
import com.gwtplatform.mvp.client.PopupView;
import com.google.inject.Inject;
import com.google.web.bindery.event.shared.EventBus;
public class DemoWidgetPresenter extends
PresenterWidget<DemoWidgetPresenter.MyView> {
public interface MyView extends PopupView {
}
#Inject
public DemoWidgetPresenter(final EventBus eventBus, final MyView view) {
super(eventBus, view);
}
#Override
protected void onBind() {
super.onBind();
}
#Override
protected void onReveal() {
super.onReveal();
System.out.println(">>>> onReveal()");
}
}
And the view code:
import com.gwtplatform.mvp.client.PopupViewImpl;
import com.google.inject.Inject;
import com.google.web.bindery.event.shared.EventBus;
import com.google.gwt.user.client.ui.Widget;
import com.smartgwt.client.widgets.Window;
import com.smartgwt.client.widgets.events.CloseClickEvent;
import com.smartgwt.client.widgets.events.CloseClickHandler;
public class DemoWidgetView extends PopupViewImpl implements
DemoWidgetPresenter.MyView {
private Window winModal;
#Inject
public DemoWidgetView(final EventBus eventBus) {
super(eventBus);
winModal = new Window();
winModal.setWidth(300);
winModal.setHeight(500);
winModal.setTitle("Export file");
winModal.setShowMinimizeButton(false);
winModal.setIsModal(true);
winModal.setShowModalMask(true);
winModal.centerInPage();
winModal.setCanDragResize(true);
winModal.addCloseClickHandler(new CloseClickHandler() {
#Override
public void onCloseClick(CloseClickEvent event) {
winModal.hide();
}
});
}
#Override
public void center() {
winModal.centerInPage();
}
#Override
public void hide() {
winModal.hide();
}
#Override
public void setPosition(int left, int top) {
winModal.setLeft(left);
winModal.setTop(top);
}
#Override
public void show() {
winModal.show();
}
public Widget asWidget() {
return winModal;
}
}
In another part of the program I show this presenter with:
addToPopupSlot(dp, true);
Where dp is an injected instance of DemoWidgetPresenter.
When DemoWidgetPresenter is show the folowing Exception is raised:
com.google.gwt.event.shared.UmbrellaException: One or more exceptions caught, see full set in UmbrellaException#getCauses
at com.google.gwt.event.shared.HandlerManager.fireEvent(HandlerManager.java:129)
at com.smartgwt.client.widgets.BaseWidget.fireEvent(BaseWidget.java:67)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)
at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:337)
at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:218)
at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136)
at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:561)
at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:269)
at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:91)
at com.google.gwt.core.client.impl.Impl.apply(Impl.java)
at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:213)
at sun.reflect.GeneratedMethodAccessor45.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)
at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:292)
at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:546)
at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:363)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassCastException: com.smartgwt.client.widgets.Window cannot be cast to com.google.gwt.user.client.ui.PopupPanel
at com.gwtplatform.mvp.client.PopupViewImpl.asPopupPanel(PopupViewImpl.java:130)
at com.gwtplatform.mvp.client.PopupViewImpl.setCloseHandler(PopupViewImpl.java:104)
at com.gwtplatform.mvp.client.PresenterWidget.monitorCloseEvent(PresenterWidget.java:574)
at com.gwtplatform.mvp.client.PresenterWidget.addToPopupSlot(PresenterWidget.java:205)
at com.demo.client.core.mvp.DiffPresenter$9.onClick(DiffPresenter.java:397)
at com.smartgwt.client.widgets.events.ClickEvent.dispatch(ClickEvent.java:96)
at com.smartgwt.client.widgets.events.ClickEvent.dispatch(ClickEvent.java:1)
at com.google.gwt.event.shared.GwtEvent.dispatch(GwtEvent.java:1)
at com.google.web.bindery.event.shared.EventBus.dispatchEvent(EventBus.java:40)
at com.google.web.bindery.event.shared.SimpleEventBus.doFire(SimpleEventBus.java:193)
at com.google.web.bindery.event.shared.SimpleEventBus.fireEvent(SimpleEventBus.java:88)
at com.google.gwt.event.shared.HandlerManager.fireEvent(HandlerManager.java:127)
at com.smartgwt.client.widgets.BaseWidget.fireEvent(BaseWidget.java:67)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)
at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:337)
at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:218)
at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136)
at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:561)
at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:269)
at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:91)
at com.google.gwt.core.client.impl.Impl.apply(Impl.java)
at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:213)
at sun.reflect.GeneratedMethodAccessor45.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)
at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:292)
at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:546)
at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:363)
at java.lang.Thread.run(Unknown Source)
I see the problem is due to a casting between
com.smartgwt.client.widgets.Window and
com.google.gwt.user.client.ui.PopupPanel but I don't know how to solve it!
Despite the Exception, the window is shown, but function onReveal() is never call, so the presenter live cycle is broken..
Any idea/workaround :-)?
Thank you in advance!

Answer 1

In my case we are using UIBinder XML to define layout and I had an issue with GWTBootstrap3's Modal compenent.
I have rolled out a custom ModalPopupAdapter using the mentioned solution, but needed the following additions to the different parts:
Java Code in View
#UiField(provided = true)
Modal modal = new Modal();
#UiField(provided = true)
ModalPopupAdapter modalPopupAdapter = new ModalPopupAdapter(modal);
UIBinder XML
<afr:ModalPopupAdapter ui:field="modalPopupAdapter">
<bs:Modal ui:field="modal" other-attributes...>

Answer 2

I found a solution doing an adapter class:
import com.google.gwt.event.logical.shared.CloseEvent;
import com.google.gwt.event.logical.shared.CloseHandler;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.user.client.ui.PopupPanel;
import com.gwtplatform.mvp.client.PopupView;
import com.gwtplatform.mvp.client.PopupViewImpl;
import com.smartgwt.client.widgets.Window;
import com.smartgwt.client.widgets.events.CloseClickEvent;
import com.smartgwt.client.widgets.events.CloseClickHandler;
/**
* Adapter class for {#link Window}. This class it is necessary when a
* {#link PopupView} uses as widget a {#link Window}. GWTP library does an
* explicit cast to {#link PopupPanel} in {#link PopupViewImpl} and a cast
* exception is raised. This class adapts only these functions which are call in
* {#link PopupViewImpl}.
*
*
*/
public class PopupPanelAdapter extends PopupPanel {
private Window delegate;
public PopupPanelAdapter(Window delegate) {
this.delegate = delegate;
// adapting window close event
delegate.addCloseClickHandler(new CloseClickHandler() {
#Override
public void onCloseClick(CloseClickEvent event) {
CloseEvent.fire(PopupPanelAdapter.this, null);
}
});
}
public void hide() {
delegate.hide();
}
public void show() {
delegate.show();
}
#Override
public HandlerRegistration addCloseHandler(CloseHandler<PopupPanel> handler) {
return super.addCloseHandler(handler);
}
#Override
public boolean isShowing() {
return isVisible();
}
#Override
public void center() {
delegate.centerInPage();
}
#Override
public void setPopupPosition(int left, int top) {
if (delegate == null)// call in constructor, delegate is null
return;
delegate.setLeft(left);
delegate.setTop(top);
}
}
It works fine!