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RE: ext:Window Hide Handler

nfreeze — Tue, 05 Aug 2008 18:36:32 GMT

Very nice! I have to say, Coolite/ExtJS is the best performing asp.net toolkit I've worked with so far. Do you have an ETA for the v0.6 release?

Thanks,
Nathan

RE: ext:Window Hide Handler

geoffrey.mcgill — Tue, 05 Aug 2008 17:17:49 GMT

The new <AjaxEvents> functionality is almost ready and will be available with the v0.6 release.

The following sample demonstrates how a <Hide> AjaxEvent is added to an <ext:Window>.

Example

[code]<ext:Window
ID="Window1"
runat="server"
Title="Window with AjaxEvent"
Closable="true"
CloseAction="Hide">
<AjaxEvents>
<Hide OnEvent="Window1_Hide" />
</AjaxEvents>
</ext:Window>[/code]

The "OnEvent" delegate is fired server-side using an ajax request (async postback, callback) when the Window is closed.

The following sample demonstrates the server-side code required to wire up the event handler.

Example

[code]protected void Window1_Hide(object sender, AjaxEventEventArgs e)
{
// the Window was closed.
// do something...

this.Window1.Html = "This Window has been previously closed.";
}[/code]

There's a huge amount of functionality built into the new <AjaxEvents> and this sample is just a small taste.

RE: ext:Window Hide Handler

nfreeze — Mon, 04 Aug 2008 18:52:43 GMT

I also needed server side events for the window close/hide so as an interim solution I wired up the client side events to an asp.net script callback and passed the event name in as an argument. It's a hack but it gets the job done! Hope it helps someone.
[code]
<ext:Window ID="Window1" runat="server" CloseAction="Hide" Collapsible="true" icon="Application" Title="Title">
<Listeners>
<Hide Handler="RelayEvent('hide','')" />
<Move Handler="RelayEvent('move','')" />
</Listeners>
</ext:Window>[/code]

[code]
Partial Class _Default
Inherits System.Web.UI.Page
Implements ICallbackEventHandler

Private _callbackArg As String

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim cbReference As String
cbReference = Page.ClientScript.GetCallbackEventReference(Me, "arg", "ReceiveServerData", "context")
Dim callbackScript As String
callbackScript = "function RelayEvent(arg, context)" & "{" & cbReference & "; }"
Page.ClientScript.RegisterClientScriptBlock(Me.GetType(), "RelayEvent", callbackScript, True)
End Sub

Public Function GetCallbackResult() As String Implements System.Web.UI.ICallbackEventHandler.GetCallbackResult
Select Case _callbackArg
Case "hide"
Return "Hidden"
Case "move"
Return "Moved"
Case Else
Return _callbackArg
End Select
End Function

Public Sub RaiseCallbackEvent(ByVal eventArgument As String) Implements System.Web.UI.ICallbackEventHandler.RaiseCallbackEvent
_callbackArg = eventArgument
End Sub
End Class
[/code]

[code]
<script type="text/javascript">
function ReceiveServerData(arg, context)
{
document.getElementById('Text1').innerText = arg;
}
[/code]

Thanks,
Nathan

RE: ext:Window Hide Handler

haltenberg — Wed, 18 Jun 2008 10:38:17 GMT

Thanks for the info, Geoffrey!
Hope 0.6 is coming soon. Can't wait to try the grid :)

RE: ext:Window Hide Handler

geoffrey.mcgill — Wed, 18 Jun 2008 09:51:16 GMT

I apologize for the delay in getting back to you.

At the moment there is no server-side event attached to the Window Close event. We're investigating a solution which would allow for ajax binding to any of the 150+ client-side events within the framework. But, that functionality is not going to be available until a future release.

RE: ext:Window Hide Handler

haltenberg — Wed, 18 Jun 2008 08:40:36 GMT

I hate to be annoying, but was curious if it is possible to have a server-side handler for the window's hide event with the current Coolite...

Thanks!

RE: ext:Window Hide Handler

haltenberg — Mon, 16 Jun 2008 13:33:37 GMT

[quote]Very good and very interesting question. Do you need to do a full postback? or just an Ajax request to set/get simple information from server?[/quote]
Right now I need a full postback, but it would be nice to know both options :)

Thanks, Geoffrey!

RE: ext:Window Hide Handler

geoffrey.mcgill — Mon, 16 Jun 2008 11:55:33 GMT

Very good and very interesting question. Do you need to do a full postback? or just an Ajax request to set/get simple information from server?

You are correct re: the CloseAction. If "Close", Window will be destroyed and not available again. If "Hide", you can re-open when .Show() is called. Mind you, that is all client-side. If you are making a full postback to the server, then you will be able to re-create the Window if you "Close".

ext:Window Hide Handler

haltenberg — Mon, 16 Jun 2008 10:14:34 GMT

How do I attach a server-side handler to ext:Windows's hide event? I need to perform some server-side action when the window is hidden.

Also, from what I understand, if the CloseAction is 'Close' (default), there is no way to open this window after it had been closed? Therefore I should use CloseAction="Hide" if I need the ability to reopen the window (e.g. on button click)?

Thank you!