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[CLOSED] TabStrip causing Browser Hung when Performing Widget Assembling

  1. #1
    Feb 24, 2013, 5:05 AM

    [CLOSED] TabStrip causing Browser Hung when Performing Widget Assembling

    Hi guys, try this:

    - aspx

    
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title></title>
</head>
<body id="theBody">
    <form id="theForm" runat="server">
        <ext:ResourceManager ID="theManager" runat="server"
            Theme="Default"
            ShowWarningOnAjaxFailure="false"
            DirectMethodProxy="Ignore"
            ScriptMode="Debug" />
        <ext:Viewport runat="server" ID="vpMain" Layout="FitLayout">
            <Bin>
                <ext:Store runat="server" ID="dsGUID" AutoLoad="false">
                    <Listeners>
                    </Listeners>
                </ext:Store>
                <ext:Store runat="server" ID="dsMain" AutoLoad="false">
                    <Parameters>
                        <ext:StoreParameter Name="id" Value="Appointment.EntityId" Mode="Raw" />
                    </Parameters>
                    <Listeners>
                    </Listeners>
                </ext:Store>
            </Bin>
            <Items>
                <ext:Panel runat="server" Border="false" Layout="BorderLayout">
                    <TopBar>
                        <ext:Toolbar runat="server">
                            <Items>
                                <ext:Button runat="server" ID="b1" Icon="Application" Text="---GO">
                                    <Listeners>
                                        <Click Handler="#{cParticipant}.add(window.testC);window.testC.show();" />
                                    </Listeners>
                                </ext:Button>
                                <ext:TabStrip runat="server">
                                    <Items>
                                        <ext:Tab ActionItemID="pContent" Text="----" />
                                    </Items>
                                </ext:TabStrip>
                            </Items>
                        </ext:Toolbar>
                    </TopBar>
                    <Items>
                        <ext:Container runat="server" ID="cParticipant" Width="200" Layout="FitLayout"
                            Region="West" Margins="2 0 2 2" Split="true" />
                        <ext:Container runat="server" Layout="CardLayout" ActiveIndex="0"
                            Region="Center" Margins="2 2 2 0">
                            <Items>
                                <ext:Panel runat="server" ID="pContent" Layout="FitLayout">
                                    <Content>
                                    </Content>
                                </ext:Panel>
                            </Items>
                        </ext:Container>
                    </Items>
                </ext:Panel>
            </Items>
        </ext:Viewport>
    </form>
</body>
</html>
<script runat="server">    
    
    protected override void OnInit(EventArgs e)
    {
        base.OnInit(e);


        Control c = Page.LoadControl("control1.ascx");
        Page.Form.Controls.AddAt(0, c);
    }


</script>

    - ascx (control1.ascx)

    
<%@ Control Language="C#" %>
<ext:GridPanel runat="server" ID="gp" Hidden="true">
    <Store>
        <ext:Store runat="server" ID="ds" AutoLoad="false">
            <Model>
                <ext:Model runat="server">
                    <Fields>
                        <ext:ModelField Name="A" />
                    </Fields>
                </ext:Model>
            </Model>
        </ext:Store>
    </Store>
    <ColumnModel runat="server">
        <Columns>
            <ext:RowNumbererColumn runat="server" Align="Right" Width="25" />
            <ext:Column runat="server" Text="A" DataIndex="A" Flex="1" />
        </Columns>
    </ColumnModel>
    <Listeners>
        <AfterRender Handler="window.testC=#{gp};" />
    </Listeners>
</ext:GridPanel>
    Click "--- GO" and browser instance (IE9) turns into busy with 15% cpu time and page response to mouse events becomes extremely low.
    Obvious dead looping of some kind. Please take a look. :)
    Last edited by Daniil; Mar 04, 2013 at 12:27 PM. Reason: [CLOSED]
  2. #2
    Feb 24, 2013, 7:21 AM
    I was able to reproduce the problem.

    I simplified your original code sample by removing a bunch of code that was not related to the problem.

    Example (.aspx)

    <%@ Page Language="C#" %>

<script runat="server">    
    protected override void OnInit(EventArgs e)
    {
        base.OnInit(e);
 
        Control c = Page.LoadControl("child.ascx");
        this.Page.Form.Controls.AddAt(0, c);
    }
</script>


<!DOCTYPE html>
<html>


<head runat="server">
    <title></title>
</head>
<body id="theBody">
    <form id="theForm" runat="server">
        <ext:ResourceManager 
            runat="server"
            ShowWarningOnAjaxFailure="false"
            DirectMethodProxy="Ignore"
            ScriptMode="Debug" 
            />


        <ext:Viewport runat="server" Layout="FitLayout">
            <Items>
                <ext:Panel runat="server" Border="false" Layout="BorderLayout">
                    <TopBar>
                        <ext:Toolbar runat="server">
                            <Items>
                                <ext:Button runat="server" Icon="Application" Text="---GO">
                                    <Listeners>
                                        <Click Handler="#{cParticipant}.add(window.testC);window.testC.show();" />
                                    </Listeners>
                                </ext:Button>
                                <ext:TabStrip runat="server">
                                    <Items>
                                        <ext:Tab ActionItemID="pContent" Text="----" />
                                    </Items>
                                </ext:TabStrip>
                            </Items>
                        </ext:Toolbar>
                    </TopBar>
                    <Items>
                        <ext:Container 
                            runat="server" 
                            ID="cParticipant" 
                            Width="200" 
                            Layout="FitLayout"
                            Region="West" 
                            Margins="2 0 2 2" 
                            Split="true" 
                            />
                    </Items>
                </ext:Panel>
            </Items>
        </ext:Viewport>
    </form>
</body>
</html>
    Example (.ascx)

    <%@ Control Language="C#" %> 
<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>


<ext:GridPanel runat="server" Hidden="true">
    <Store>
        <ext:Store runat="server" AutoLoad="false">
            <Model>
                <ext:Model runat="server">
                    <Fields>
                        <ext:ModelField Name="A" />
                    </Fields>
                </ext:Model>
            </Model>
        </ext:Store>
    </Store>
    <ColumnModel runat="server">
        <Columns>
            <ext:RowNumbererColumn runat="server" Align="Right" Width="25" />
            <ext:Column runat="server" Text="A" DataIndex="A" Flex="1" />
        </Columns>
    </ColumnModel>
    <Listeners>
        <AfterRender Handler="window.testC = this;" />
    </Listeners>
</ext:GridPanel>
    We are investigating.
    Geoffrey McGill
    Founder
    Ext.NETASP.NET UI Component framework
    RetypeDocumentation website generator
    MojeeLightning fast Emoji library for .NET
    Ext.NET Examples|Ext.NET API Docs|ExtJS API Docs|Twitter
  3. #3
    Feb 25, 2013, 4:28 AM
    Hi,

    Fixed in SVN, thaks for the report

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