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  • Asynchronous COMET query with Tornado and Prototype

    - by grundic
    Hello everyone. I'm trying to write simple web application using Tornado and JS Prototype library. So, the client can execute long running job on server. I wish, that this job runs Asynchronously - so that others clients could view page and do some stuff there. Here what i've got: #!/usr/bin/env/ pytthon import tornado.httpserver import tornado.ioloop import tornado.options import tornado.web from tornado.options import define, options import os import string from time import sleep from datetime import datetime define("port", default=8888, help="run on the given port", type=int) class MainHandler(tornado.web.RequestHandler): def get(self): self.render("templates/index.html", title="::Log watcher::", c_time=datetime.now()) class LongHandler(tornado.web.RequestHandler): @tornado.web.asynchronous def get(self): self.wait_for_smth(callback=self.async_callback(self.on_finish)) print("Exiting from async.") return def wait_for_smth(self, callback): t=0 while (t < 10): print "Sleeping 2 second, t={0}".format(t) sleep(2) t += 1 callback() def on_finish(self): print ("inside finish") self.write("Long running job complete") self.finish() def main(): tornado.options.parse_command_line() settings = { "static_path": os.path.join(os.path.dirname(__file__), "static"), } application = tornado.web.Application([ (r"/", MainHandler), (r"/longPolling", LongHandler) ], **settings ) http_server = tornado.httpserver.HTTPServer(application) http_server.listen(options.port) tornado.ioloop.IOLoop.instance().start() if __name__ == "__main__": main() This is server part. It has main view (shows little greeting, current server time and url for ajax query, that executes long running job. If you press a button, a long running job executes. And server hangs :( I can't view no pages, while this job is running. Here is template page: <html> <head> <title>{{ title }}</title> <script type="text/javascript" language="JavaScript" src="{{ static_url("js/prototype.js")}}"></script> <script type='text/javascript' language='JavaScript'> offset=0 last_read=0 function test(){ new Ajax.Request("http://172.22.22.22:8888/longPolling", { method:"get", asynchronous:true, onSuccess: function (transport){ alert(transport.responseText); } }) } </script> </head> <body> Current time is {{c_time}} <br> <input type="button" value="Test" onclick="test();"/> </body> </html> what am I doing wrong? How can implement long pooling, using Tornado and Prototype (or jQuery) PS: I have looked at Chat example, but it too complicated. Can't understand how it works :( PSS Download full example

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  • Zend Pdf generation from an action

    - by Nisanth
    Hi all, I have a controller Employee , in that i have the action detail . The detail action prints like the attached image. Suppose there is a save pdf button, i need to print this page as .pdf.. How can i do this ? Pls help me Thanks in advance Nisanth

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  • spring-roo dojox.grid.DataGrid not rendered

    - by Steve Wall
    Hello, I'm using spring-roo trying to use dojox.grid.DataGrid. The page renders as a plain table. Why does it not use the DataGrid? Thanks! Steve <div xmlns:spring="http://www.springframework.org/tags" xmlns:c="http://java.sun.com/jsp/jstl/core" xmlns:jsp="http://java.sun.com/JSP/Page" version="2.0"><jsp:output omit-xml-declaration="yes" /> <script type="text/javascript"> dojo.require("dijit.TitlePane"); </script> <script type="text/javascript" src="&lt;c:url value=&quot;/resources/dojo/dojo.js&quot; /&gt;"> </script> <script type="text/javascript" src="&lt;c:url value=&quot;/resources/spring/Spring.js&quot; /&gt;"> </script> <script type="text/javascript" src="&lt;c:url value=&quot;/resources/spring/Spring-Dojo.js&quot; /&gt;"> </script> <script type="text/javascript"> dojo.require("dojox.grid.DataGrid"); dojo.require("dojox.data.CsvStore"); </script> <div id="_title"><spring:message var="app_name" code="application.name" /> <spring:message var="title" code="welcome.titlepane" arguments="${app_name}" /> <script type="text/javascript"> Spring.addDecoration(new Spring.ElementDecoration( { elementId : '_title', widgetType : 'dijit.TitlePane', widgetAttrs : { title : '${title}' } })); </script> <h4>Title</h4> <table dojoType="dojox.grid.DataGrid"> <thead> <tr> <th field="fieldName" width="200px">Column Name</th> <th field="fieldName" width="200px">Column Name</th> </tr> </thead> <tbody> <tr> <td>test1</td> <td>test2</td> </tr> <tr> <td>test3</td> <td>test4</td> </tr> </tbody> </table> </div> </div>

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  • JqueryTools conflict

    - by kwek-kwek
    I am trying to create this tooltip sample for my wordpress it works just fine but as soon as I integrated it in wordpress I can't get the tooltip to show up. The page where I want to work is here

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  • Create pdf file with ghostscript

    - by kofucii
    Hello, I'm using SCO Unix, with old version of ghostscript (7.7). When I convert the postscript source file to pdf otput file, It's content is visible on the SCO machine. But when I copy the pdf file into windows, and open it with adobe acrobat, all I can see is a blank page. Does anybody have a solution to this?

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  • Greasemonkey Submit Form

    - by magixx
    I'm trying to autosubmit a form with greasemonkey however I'm not sure how to do it with this button. The button seems to have the following properties a class="blue-button" href="javascript:void(0)" onclick="Form.submit(this);" and the only form I see above is <form xmlns="http://www.w3.org/1999/xhtml" xmlns:s="http://www.blizzard.com/ns/store" action="/account/management/add-game.xml" autocomplete="off" method="post"> The page is here you can use "[email protected]" and "a1a1a1a1" as a login.

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  • Wordpress plugin help

    - by sico87
    Hello, On my wordpress site, I am hoping that I would be able to set up a page that only allows the users to access it if the member is logged in. I still need the link to be available in the navigation but for it to check if the user is signed in... I have been searching for about an hour and cannot really find anything that fits my criteria.

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  • How Drupal works?

    - by alice
    I have yet to see a comprehensive overview about how Drupal really works. Most of the tutorials are about lame things, like adding a module or configuring a site. Where is a flowchart about how the page gets generated? Most of the documentation is clumsy too. What's the best resource for learning how Drupal really works?

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  • Sharepoint DateTimeControl: set it to null

    - by pistacchio
    Hi, how can I set the selected value of a Sharepoint DateTimeControl to null? When you first load it into a page, there's no value selected (even if the returned value is not properly null but one can check it with IsDateEmpty). How can i programmatically set it back to the initial, empty value? Thanks

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  • computationally expensive flash blocking javascript events

    - by jedierikb
    When I have a computationally expensive flash animation running in my page, sometimes javascript keyUp listeners on a textfield are not being fired. Keydown events are not lost. This only happens in IE8 (and IE7 in compatibility mode). I need those keyup listeners! How can I solve / workaround this problem? Ideas: query the textfield myself (without the broken listener) if the key is down or up? can I do this?

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  • fileupload control to show only excel files ?

    - by subash
    i have a fileupload control in a web page writen in asp & c#.net . on clicking the browse button it shows all the files in the upload dialog,i want to show only files of excel to be shown .how can it be done? else do we have any other tools to show only excel files on clicking browse buttons?

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  • Is fckeditor free for use in freelance projects?

    - by Ali
    This is more of a licencing issue than a code question. I really like the ckeditor editor and would like to use it in my freelance projects which I do for clients. However upon reading the license page it has me in a bit of a confusion. DO I have to buy licences if I intend to use this in cms websites that I build myself and hand over to clients? If so then what are my alternate options which don't cost anything?

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  • Launch Program from IE

    - by webertron
    Is it possible to launch a program from an anchor in IE? For example, iTunes had links like itms:blahblah that would open up iTunes and go directly to the appropriate page. If so, what is the best way to do this?

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  • Watin - Watin.Core.Exceptions.ElementNotFoundException

    - by potterosa
    I have code that runs that gives me the error : Could not find a 'INPUT (text password textarea hidden) or TEXTAREA' tag containing attribute name with value ________ (It's testing a website) It says it can't find a What reason could it be that it can't find it? It finds others without an issue on other pages, but this page for some odd reason it baulks? How can that be?

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  • Single ErrorDocument directive to catch all errors (.htaccess)

    - by Mike Valeriano
    Hello. Is there something like a wildcard directive to catch all possible errors and deal with them in a single custom error page? ErrorDocument 404 /error.php?code=404 ErrorDocument 403 /error.php?code=403 ... ErrorDocument NNN /error.php?code=NNN #possible use of RegExp? I know I probably won't be dealing with a lot of custom error pages here, but I'm curious about this.

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  • ASP.NET MVC: routing help

    - by pcampbell
    Consider two methods on the controller CustomerController.cs: //URL to be http://mysite/Customer/ public ActionResult Index() { return View("ListCustomers"); } //URL to be http://mysite/Customer/8 public ActionResult View(int id) { return View("ViewCustomer"); } How would you setup your routes to accommodate this requirement? How would you use Html.ActionLink when creating a link to the View page?

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  • Stop UIWebView from "bouncing" vertically ?

    - by Brad Parks
    Hi there; Does anyone know how to stop a UIWebView from bouncing vertically? I mean when a user touches their iphone screen, drags their finger downwards, and the webview shows a blank spot above the web page I had loaded? I've looked at the following possible solutions, but none of them worked for me: http://www.iphonedevsdk.com/forum/iphone-sdk-development/996-turn-off-scrolling-bounces-uiwebview.html http://forums.macrumors.com/showthread.php?t=619534 http://stackoverflow.com/questions/173786/how-do-i-stop-a-uiscrollview-from-bouncing-horizontally Thanks! Brad

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  • Error when updating BlackBerry JDE Plug-in for Eclipse (v5.0 Beta 3) ?

    - by Ashraf Bashir
    I tried to update Blackberry JDE plug-in for eclipse from v4.5 to v5.0 Beta 3. I followed the instructions in this page: http://na.blackberry.com/eng/developers/devbetasoftware/updatesite.jsp but unfortunately I got the following error while updating: An error occurred while collecting items to be installed. No repository found containing: net.rim.eide.feature.componentpack5.0.0/org.eclipse.update.feature/5.0.0.14 How this could be solved ? Any suggestions ?

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  • validation in datagrid while insert update in asp.net

    - by abhi
    <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default7.aspx.cs" Inherits="Default7" % <%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" % Untitled Page   <telerik:GridTemplateColumn Visible="false"> <ItemTemplate> <asp:Label ID="lblEmpID" runat="server" Text='<%# bind("pid") %>'> </asp:Label> </ItemTemplate> </telerik:GridTemplateColumn> <telerik:GridBoundColumn UniqueName="Fname" HeaderText="Fname" DataField="Fname" CurrentFilterFunction="NotIsNull" SortExpression="Fname"> </telerik:GridBoundColumn> <telerik:GridBoundColumn UniqueName="Lname" HeaderText="Lname" DataField="Lname" CurrentFilterFunction="NotIsNull" SortExpression="Lname"> </telerik:GridBoundColumn> <telerik:GridBoundColumn UniqueName="Designation" HeaderText="Designation" DataField="Designation" CurrentFilterFunction="NotIsNull" SortExpression="Designation"> </telerik:GridBoundColumn> <telerik:GridEditCommandColumn> </telerik:GridEditCommandColumn> <telerik:GridButtonColumn CommandName="Delete" Text="Delete" UniqueName="column"> </telerik:GridButtonColumn> </Columns> <EditFormSettings> <FormTemplate> <table> <tr> <td>Fname*</td> <td> <asp:HiddenField ID="Fname" runat="server" Visible="false" /> <asp:TextBox ID="txtFname" runat="server" Text='<%#("Fname")%>'> </asp:TextBox> <asp:RequiredFieldValidator ID="EvalFname" ControlToValidate="txtFname" ErrorMessage="Enter Name" runat="server" ValidationGroup="Update"> *</asp:RequiredFieldValidator> </td> </tr> <tr> <td>Lname*</td> <td> <asp:HiddenField ID="HiddenField1" runat="server" Visible="false" /> <asp:TextBox ID="txtLname" runat="server" Text='<%#("Lname")%>'> </asp:TextBox> <asp:RequiredFieldValidator ID="RequiredFieldValidator1" ControlToValidate="txtLname" ErrorMessage="Enter Name" runat="server" ValidationGroup="Update"> *</asp:RequiredFieldValidator> </td> </tr> <tr> <td>Designation* </td> <td> <asp:HiddenField ID="HiddenField2" runat="server" Visible="false" /> <asp:TextBox ID="txtDesignation" runat="server" Text='<%#("Designation")%>'> </asp:TextBox> <asp:RequiredFieldValidator ID="RequiredFieldValidator2" ControlToValidate="txtDesignation" ErrorMessage="Enter Designation" runat="server" ValidationGroup="Update"> *</asp:RequiredFieldValidator> </td> </tr> </table> </FormTemplate> <EditColumn UpdateText="Update record" UniqueName="EditCommandColumn1" CancelText="Cancel edit"> </EditColumn> </EditFormSettings> </MasterTableView> </telerik:RadGrid> </form> this is my code i want to perform validation using the required validators but i think m missing smthin so pls help, here's my code behind using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Data.SqlClient; using Telerik.Web.UI; public partial class Default7 : System.Web.UI.Page { string strQry; public SqlDataAdapter da; public DataSet ds; public SqlCommand cmd; public DataTable dt; string strCon = "Data Source=MINETDEVDATA; Initial Catalog=ML_SuppliersProd; User Id=sa; Password=@MinetApps7;"; public SqlConnection con; protected void Page_Load(object sender, EventArgs e) { } protected void RadGrid1_NeedDataSource(object source, Telerik.Web.UI.GridNeedDataSourceEventArgs e) { dt = new DataTable(); con = new SqlConnection(strCon); da = new SqlDataAdapter(); try { strQry = "SELECT * FROM table2"; con.Open(); da.SelectCommand = new SqlCommand(strQry,con); da.Fill(dt); RadGrid1.DataSource = dt; } finally { con.Close(); } } protected void RadGrid1_DeleteCommand(object source, Telerik.Web.UI.GridCommandEventArgs e) { con = new SqlConnection(strCon); cmd = new SqlCommand(); GridDataItem item = (GridDataItem)e.Item; string pid = item.OwnerTableView.DataKeyValues[item.ItemIndex]["pid"].ToString(); con.Open(); string delete = "DELETE from table2 where pid='"+pid+"'"; cmd.CommandText = delete; cmd.Connection = con; cmd.ExecuteNonQuery(); con.Close(); } protected void RadGrid1_UpdateCommand(object source, GridCommandEventArgs e) { GridEditableItem radgriditem = e.Item as GridEditableItem; string pid = radgriditem.OwnerTableView.DataKeyValues[radgriditem.ItemIndex]["pid"].ToString(); string firstname = (radgriditem["Fname"].Controls[0] as TextBox).Text; string lastname = (radgriditem["Lname"].Controls[0] as TextBox).Text; string designation = (radgriditem["Designation"].Controls[0] as TextBox).Text; con = new SqlConnection(strCon); cmd = new SqlCommand(); try { con.Open(); string update = "UPDATE table2 set Fname='" + firstname + "',Lname='" + lastname + "',Designation='" + designation + "' WHERE pid='" + pid + "'"; cmd.CommandText = update; cmd.Connection = con; cmd.ExecuteNonQuery(); con.Close(); } catch (Exception ex) { RadGrid1.Controls.Add(new LiteralControl("Unable to update Reason: " + ex.Message)); e.Canceled = true; } } protected void RadGrid1_InsertCommand(object source, GridCommandEventArgs e) { GridEditFormInsertItem insertitem = (GridEditFormInsertItem)e.Item; string firstname = (insertitem["Fname"].Controls[0] as TextBox).Text; string lastname = (insertitem["Lname"].Controls[0] as TextBox).Text; string designation = (insertitem["Designation"].Controls[0] as TextBox).Text; con = new SqlConnection(strCon); cmd = new SqlCommand(); try { con.Open(); String insertQuery = "INSERT into table1(Fname,Lname,Designation) Values ('" + firstname + "','" + lastname + "','" + designation + "')"; cmd.CommandText = insertQuery; cmd.Connection = con; cmd.ExecuteNonQuery(); con.Close(); } catch(Exception ex) { RadGrid1.Controls.Add(new LiteralControl("Unable to insert Reason:" + ex.Message)); e.Canceled = true; } } }

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  • Best tool for developing CSS positioning code

    - by alchemical
    What's the best way to develop CSS, in particular if it will play a role in formatting the page, etc. Is this best done by hand or with a particular editor? If by hand, how would you know the values needed to specify the positioning? If a tool is best, can VS2008/2010 do the job, or are there better alternatives. By the way, this is for an ASP.Net based web site.

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  • Login Using HtmlUnit

    - by Sunil
    Hello I am using HtmlUnit to login into the page. I got the userid amd password field and also the submit button .The type of submit button is image . and I fill the userid and password field with values and when I click the button i is unable to login. Thanks in advance.

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