Oracle ADF: Close popup after downloading file - oracle-adf

Question

So here's the thing. I have a popup that has a button, the button itself has a fileDownloadActionListener, this one is responsible for downloading an excel file. So what I need basically is to hide the popup right after I generate the file.
Here's my .jspx file (Just the popup)
<af:popup childCreation="deferred" autoCancel="enabled"
id="myPopUp"
contentDelivery="lazyUncached"
binding="#{viewScope.mbMyBean.myPopUp}"
partialTriggers="b17">
<af:dialog id="d16" type="cancel"
title="Do you wish to download a file?"
inlineStyle="width:400px;">
<af:panelGroupLayout id="pgl32"
inlineStyle="max-width: 200px;">
<af:outputText value="You're about to download a file. Ready?" id="ot45"
/>
</af:panelGroupLayout>
<f:facet name="buttonBar">
<af:button text="GO" id="b17"
<af:fileDownloadActionListener contentType="excelHTML"
filename="#{viewScope.mbMyBean.FileName}"
method="#{viewScope.mbMyBean.GenerateEmptyExcel}"
/>
</af:button>
</f:facet>
</af:dialog>
</af:popup>
And here's the java method:
public void GenerateEmptyExcel(FacesContext facesContext, OutputStream outputStream) {
try {
HSSFWorkbook wb1 = generateEmptyExcelFile();
wb1.write(outputStream);
outputStream.flush();
outputStream.close();
this.myPopUp.hide();
AdfFacesContext.getCurrentInstance().addPartialTarget(this.myPopUp);
System.gc();
} catch (Exception e) {
e.printStackTrace();
}
}
PROBLEM
The popup won't hide.
NOTES
The popup is properly binded within the bean
I do not own this code and I'm doing a maintainance.
I do not know why the programmer used System.gc() since I consider it as a bad practice. Here's a good reason

Answer 1

I had the same problem after downloading a file, you should try this:
Use a resource type javascript to trigger an event click in commandButton
<af:resource type="javascript">
function customHandler(evt) {
console.log(evt);
var exportCmd = AdfPage.PAGE.findComponentByAbsoluteId("pt1:b17");
console.log(exportCmd);
var actionEvent = new AdfActionEvent(exportCmd);
console.log(actionEvent);
actionEvent.forceFullSubmit();
actionEvent.noResponseExpected();
actionEvent.queue(false);
setTimeout(function(){hidePopup();}, 1000);
}
function hidePopup() {
var popup = AdfPage.PAGE.findComponent("pt1:popupAceptarDescargarPlantilla::content");
popup.hide();
}
</af:resource>
You should have the following buttons:
<af:commandButton text="Aceptar" id="b17" visible="false" clientComponent="true" partialSubmit="true">
<af:fileDownloadActionListener contentType="excelHTML" filename="#{viewScope.mbGestionArchivos.nombre_archivo}" method="#{viewScope.mbGestionArchivos.generateExcelVacio}"/>
</af:commandButton>
<af:button text="Aceptar" id="botonPrueba" actionListener="#{viewScope.mbInformeDetalle.prepareForDownloadAction}" clientComponent="true" partialSubmit="true"></af:button>
This is the java method called by the button :
public void prepareForDownloadAction(ActionEvent act) {
FacesContext context = FacesContext.getCurrentInstance();
ExtendedRenderKitService erks =
Service.getService(context.getRenderKit(),
ExtendedRenderKitService.class);
erks.addScript(context, "customHandler();");
}
The hidden button is triggered using javascript a ADF methods, the magic happen in the setTimeout, When executing this function we avoid for a second to make submit but the request travels to the server, here we can observe how the file is started.

Answer 2

Ideally this.myPopUp.hide(); should close the popup but if it is not working for some reason, you can try closing the popup using javascript like:
public static void hidePopup(String popupId){
if (popupId != null)
{
ExtendedRenderKitService service =
Service.getRenderKitService(FacesContext.getCurrentInstance(),
ExtendedRenderKitService.class);
StringBuffer hidePopup = new StringBuffer();
hidePopup.append("var popupObj=AdfPage.PAGE.findComponent('" + popupId +
"'); popupObj.hide();");
service.addScript(FacesContext.getCurrentInstance(), hidePopup.toString());
}
}
You can get the popup clientId that you can pass into hidePopup using: this.myPopUp.getClientId(FacesContext.getCurrentInstance());