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  • Parse SyndicationItem to c# class

    - by user285677
    What's the best way to parse the folowing rss Syndication Item into a c# class: <rss version="2.0" xmlns:fh="http://rss.flightstats.com/ns/rss/1.0"> <channel> <title>FlightStats - Lisboa Airport Departures</title> <language>en-us</language> <copyright>Copyright (c) 2007 Conducive Technology Inc. All rights reserved.</copyright> <description>FlightStats is your source for airport and flight information</description> <link>http://www.flightstats.com?utm_source=49e3481552e7c4c9:4e080df5:1281bf8969d:60e0&utm_medium=cpc&utm_campaign=rss</link> <pubDate>Sun, 25 Apr 2010 12:30:14 +0000</pubDate> <lastBuildDate>Sun, 25 Apr 2010 12:30:14 +0000</lastBuildDate> <ttl>15</ttl> <image> <url>http://dem5xqcn61lj8.cloudfront.net/Widgets/images/flightstats_logo_widget.gif</url> <title>FlightStats - Lisboa Airport Departures</title> <link>http://www.flightstats.com?utm_source=49e3481552e7c4c9:4e080df5:1281bf8969d:60e0&utm_medium=cpc&utm_campaign=rss</link> </image> <item> <fh:FlightHistory FlightHistoryId="190011545" DepartureDate="2010-04-25 12:00" ArrivalDate="2010-04-25 14:45" PublishedDepartureDate="2010-04-25 12:00" PublishedArrivalDate="2010-04-25 14:45" ScheduledGateDepartureDate="2010-04-25 12:00" ScheduledGateArrivalDate="2010-04-25 14:45" EstimatedGateArrivalDate="2010-04-25 14:40" ActualRunwayDepartureDate="2010-04-25 12:13" FlightNumber="8461" StatusCode="A" Status="Active" CreatorCode="O" ScheduledBlockTime="105" DepartureAirportTimeZoneOffset="1" ArrivalAirportTimeZoneOffset="2" ScheduledAircraftType="320" DepartureTerminal="T1" ArrivalTerminal="1" TrackingEnabled="False"> <fh:Airline AirlineCode="VY" Name="Vueling Airlines" /> <fh:Origin AirportCode="LIS" Name="Lisboa Airport" City="Lisbon" CountryCode="PT" /> <fh:Destination AirportCode="BCN" Name="Barcelona Airport" City="Barcelona" StateCode="SP" CountryCode="ES" /> </fh:FlightHistory> <guid isPermaLink="false">VY8461LISBCN</guid> <title>VY 8461 LIS-BCN Departed</title> <description> teste </description> <link>http://www.flightstats.com/go/FlightStatus/flightStatusByFlight.do? id=190011545&utm_source=49e3481552e7c4c9:4e080df5:1281bf8969d:60e0&utm_medium=cpc&utm_campaign=rss</link> </item> </channel> </rss>

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  • getDate with Jquery Datepicker

    - by matt
    i am trying to get date from my implementation of jquery date picker, add it to a string and display the resulting image in my div. Something however is just not working. Can anyone check out the code and have a look at it? The code is supposed to take the date from date picker, combine it in a string which is to have the necessary code to display tag, images are located in /image and in the format aYY-MM-DD.png, new to this date picker and can't quite get it down yet. <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> <link type="text/css" href="css/ui-lightness/jquery-ui-1.8.custom.css" rel="stylesheet" /> <script type="text/javascript" src="js/jquery-1.4.2.min.js"></script> <script type="text/javascript" src="js/jquery-ui-1.8.custom.min.js"></script> <script type="text/javascript"> $(function(){ // Datepicker $('#datepicker').datepicker({ dateFormat: 'yy-mm-dd', inline: true, minDate: new Date(2010, 1 - 1, 1), maxDate:new Date(2010, 12 - 1, 31), altField: '#datepicker_value', }); //hover states on the static widgets $('#dialog_link, ul#icons li').hover( function() { $(this).addClass('ui-state-hover'); }, function() { $(this).removeClass('ui-state-hover'); } ); }); //var img_date = .datepicker('getDate'); var day1 = $("#datepicker").datepicker('getDate').getDate(); var month1 = $("#datepicker").datepicker('getDate').getMonth() + 1; var year1 = $("#datepicker").datepicker('getDate').getFullYear(); var fullDate = year1 + "-" + month1 + "-" + day1; var str_output = "<h1><center><img src=\"/images/a" + fullDate + ".png\"></center></h1><br/><br>"; page_output.innerHTML = str_output; // writing the results to the div element (page_out) </script> </head> <body style="background-color:#000;color:#fff;margin: auto auto;"> <!-- Datepicker --> <div id="datepicker"></div> <!-- Highlight / Error --> <p>Date Value: <input type="text" id="datepicker_value" /></p> <div id="page_output" style="text-align:center; margin-top:80px; margin-bottom:20px; "></div> </body>

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  • Custom ViewEngine problem with ASP.NET MVC

    - by mare
    In this question jfar answered with his solution the problem is it does not work for me. In the method FindView() I have to somehow check if the View we are requesting is a ViewUserControl. Because otherwise I get an error saying: "A master name cannot be specified when the view is a ViewUserControl." This is my custom view engine code right now: public class PendingViewEngine : VirtualPathProviderViewEngine { public PendingViewEngine() { // This is where we tell MVC where to look for our files. /* {0} = view name or master page name * {1} = controller name */ MasterLocationFormats = new[] {"~/Views/Shared/{0}.master", "~/Views/{0}.master"}; ViewLocationFormats = new[] { "~/Views/{1}/{0}.aspx", "~/Views/Shared/{0}.aspx", "~/Views/Shared/{0}.ascx", "~/Views/{1}/{0}.ascx" }; PartialViewLocationFormats = new[] {"~/Views/{1}/{0}.ascx", "~/Views/Shared/{0}.ascx"}; } protected override IView CreatePartialView(ControllerContext controllerContext, string partialPath) { return new WebFormView(partialPath, ""); } protected override IView CreateView(ControllerContext controllerContext, string viewPath, string masterPath) { return new WebFormView(viewPath, masterPath); } public override ViewEngineResult FindView(ControllerContext controllerContext, string viewName, string masterName, bool useCache) { if (controllerContext.HttpContext.Request.IsAjaxRequest()) return base.FindView(controllerContext, viewName, "Modal", useCache); return base.FindView(controllerContext, viewName, "Site", useCache); } } The above ViewEngine fails on calls like this: <% Html.RenderAction("Display", "WidgetZoneV2", new { zoneslug = "left-default-zone" }); %> As you can see, I am providing Route values to my RenderAction call. The action I am rendering here is this: // Widget zone name is unique // GET: /WidgetZoneV2/{zoneslug} public ActionResult Display(string zoneslug) { zoneslug = Utility.RemoveIllegalCharacters(zoneslug); // Displaying widget zone creates new widget zone if it does not exist yet; so it prepares our page for // dropping of content widgets WidgetZone zone; if (!_repository.IsUniqueSlug(zoneslug)) zone = (WidgetZone) _repository.GetInstance(zoneslug); else { // replace slug with spaces to convert it into Title zone = new WidgetZone {Slug = zoneslug, Title = zoneslug.Replace('-', ' '), WidgetsList = new ContentList()}; _repository.Insert(zone); } ViewData["ContentItemsList"] = _repository.GetContentItems(); return View("WidgetZoneV2", zone); } I cannot use RenderPartial (at least I don't know how) the way I can RenderAction. To my knowledge there is no way to provide RouteValueDictionary to RenderPartial() like the way you can to RenderAction().

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  • pyQt4: QWidget subclass not responding to new setStyleSheet() background colour

    - by Ronny
    I am having an issue with PyQt4. I want to create a new widget within a window, and I want this widget to have a custom color. When i create a subclass of the QWidget class, and instantiate it, I am not able to change its background color through the setStyleSheet() function. When I instantiate a new QWidget object, I have no problems in changing its background color. But i dont want an ordinary QWidget object.I want to create my own subclass of QWidget. When i create a subclass of a QPushButton, I am also able to change its background color using the setStyleSheet() function. There are no error messages or warnings in the console window, it just refuses to work properly without any indication as to why. So what i would like to know is why is it that i can change the background color of a widget if i simply create a QWidget object, or a subclass of QPushButton, but not when i create a subclass of QWidget. And how can i therefore change the background color of an object that is a subclass of QWidget? Is it maybe something specific to the version of python or PyQt that i am using? Is it a bug in the library? or some flaw in the way that i am writing my code? I am using python 2.6.4 and PyQt4 Below is an example of the code that leads me to trouble. There are three widgets within the window one below the other. The parent widget is set with background color of green. The top widget is set to red, the middle one, is the subclass of QWidget, which should be blue, but it appears invisible because it takes on the color of the parent window for some reason. and the bottom widget is a subclass of QPushButton and is white. import sys from PyQt4 import QtGui, QtCore ################################################################################ #--------------------------------------------------------- CUSTOM WIDGET CLASS 1 class CustomWidget(QtGui.QWidget): def __init__(self, parent): QtGui.QWidget.__init__(self, parent) # some custom properties and functions will follow ################################################################################ #--------------------------------------------------------- CUSTOM WIDGET CLASS 2 class CustomWidget2(QtGui.QPushButton): def __init__(self, parent): QtGui.QPushButton.__init__(self, parent) # some custom properties and functions will follow ################################################################################ #----------------------------------------------------------- PARENT WIDGET CLASS class Parent(QtGui.QWidget): def __init__(self, parent=None): #---------------------------------------------------------- SETUP WINDOW QtGui.QWidget.__init__(self, parent) self.resize(500, 340) self.setStyleSheet("QWidget {background-color: #00FF00}") #-------------------------------------------------- SETUP DEFAULT WIDGET wid1 = QtGui.QWidget(self) wid1.setGeometry(10, 10, 480, 100) wid1.setStyleSheet("QWidget {background-color: #FF0000 }") #------------------------------------------------- SETUP CUSTOM WIDGET 1 wid2 = CustomWidget(self) wid2.setGeometry(10, 120, 480, 100) wid2.setStyleSheet("QWidget {background-color: #0000FF }") for i in dir(wid2): print i #------------------------------------------------- SETUP CUSTOM WIDGET 2 wid3 = CustomWidget2(self) wid3.setGeometry(10, 230, 480, 100) wid3.setStyleSheet("QWidget {background-color: #FFFFFF }") ################################################################################ #-------------------------------------------------------------------------- MAIN app = QtGui.QApplication(sys.argv) win = Parent() win.show() app.exec_()

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  • Myfaces extensionfilter overriding renderkit? (Tree2 component)

    - by Mike
    I've pulled in the tree2 component (from Tomahawk 1.1.9). Had used the simpler Tree component on previous projects, and this one just looks a bit nicer. Running on websphere 6.1.x and set the server side flag that's needed (com.ibm.ws.webcontainer.invokefilterscompatibility=true) and set the extensionfilter accordingly. Everything's good, and works as expected. Here's the issue: - on a page being included on this one (just some typical footer type info with NO myfaces widgets), there's some embedded html that's getting flagged with warnings in the systemout console). These look like org.apache.myfaces.renderkit.html.util.ReducedHTMLParser parse Invalid tag found: unexpected input while looking for attr name or '/' at line 475. Surroundings: 'span id="tile:footr:viewFragm'. org.apache.myfaces.renderkit.html.util.ReducedHTMLParser parse Invalid tag found: unexpected input while looking for attr name or '/' at line 479. Surroundings: 'a id="tile:footr:viewFragment'. org.apache.myfaces.renderkit.html.util.ReducedHTMLParser parse Invalid tag found: unexpected input while looking for attr name or '/' at line 492. Surroundings: 'a id="tile:footr:viewFragment'. The problem isn't necessarily with the html (which should be cleaned up regardless :-). IF I don't include myfaces, I don't get these warning messages with the default ibm jsf renderer (using jsf 1.1 still). Obviously, IBM's implementation is a bit more lax than myFaces. The page has nothing to do with myfaces at all. The reason for needing the extension filter is that it needs (for the Tree2 anyways, I know it does more for file upload) to intercept requests and then stick some .js includes on the page. Investigated this a bit, and I've included this filter in my web.xml, but it is NO longer fronting the faces servlet. So, the filter is instantiated at startup, but is never executed. Since the filter isn't in place, I've had to hard code in the includes for the 2 .js files into my page Now, the tree2 gets rendered properly, AND I'm not getting the warnings from above, because with the extentionfilter not being called, its using the IBM renderkit ;-) I'm a bit concerned that when the extension filter is in place, everything is being rendered by myFaces, rather than IBM's renderkit (i.e. All I want is myfaces/tomahawk to render the tree2 only, and let the ri do everything else) Can anyone confirm this? When you use myfaces/tomahawk, is it doing all the rendering for the whole application, or just the page any tomahawk widget is on? Thanks for any thoughts on this mike

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  • html widget communicating with server

    - by Nikita Rybak
    I'm making html widget for websites. Let's say, it will display current stock indexes. In short, arbitrary website owner takes code snippet from me and includes it on his webpage http://website.com/index.html. When arbitrary user opens http://website.com/index.html, my code sends request to my server (provider.com), which performs necessary operations and returns information to user's browser. When response has arrived, user will see relevant stock value on http://website.com/index.html. In index.html service could be called like this <script type="text/javascript" src="provider.com/service.js"> </script> <div id="target_area"></div> <script type="text/javascript"> service.show("target_area", options); </script> Now, the problem is in the same origin policy: I can't just send ajax request from website.com to provided.com and return html to embed in client's webpage. I see several solutions, which I list below, but none quite satisfy me. I wonder, if you could suggest something, especially if you had some relevant experience. 1) iframe, plain and simple. Disadvantage: must have fixed dimensions + stupid scroll bars appearing in some browsers. Can be fixed with javascript, but all this browser-specific tinkering doesn't sound good to me. 2) JSONP. Problem: can't return whole chunk of html, must return only data. Then, on browser side, I'll have to use javascript to embed data into html snippet placed statically in index.html. Doesn't sound nice, because data format is not very simple and may even change later. 3) Use hidden iframe to do ajax requests. A bit tricky, but sounds like a way to go. Well, that's my thoughts on the subject. Are there any better ways? BTW, I tried to check some existing widgets too, but didn't find much useful information. All domain names used in this text are fictional and any resemblance is purely coincidental :)

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  • dojo/dijit ContentPane setting content

    - by Kitson
    I am trying append some XML retrieved via a dojo.XHRGet to a dijit.layout.ContentPane. Everything works ok in Firefox (3.6) but in Chrome, I only get back 'undefined' in the particular ContentPane. My code looks something like this: var cp = dijit.byId("mapDetailsPane"); cp.destroyDescendants(); // there are some existing Widgets/content I want to clear // and replace with the new content var xhrData = { url : "getsomexml.php", handleAs: "xml", preventCache: true, failOk: true }; var deferred = new dojo.xhrGet(xhrData); deferred.addCallback(function(data) { console.log(data.firstChild); // get a DOM object in both Firebug // and Chrome Dev Tools cp.attr("content",data.firstChild); // get the XML appended to the doc in Firefox, // but "undefined" in Chrome }); Because in both browsers I get back a valid Document object I know XHRGet is working fine, but there seems to be some sort of difference in how the content is being set. Is there a better way to handle the return data from the request? There was a request to see my XML, so here is part of it... <?xml version="1.0" encoding="UTF-8" standalone="no"?> <svg xmlns:svg="http://www.w3.org/2000/svg" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="672" height="1674"> <defs> <style type="text/css"> <![CDATA[ ...bunch of CSS... ]]> </style> <marker refX="0" refY="0" orient="auto" id="A00End" style="overflow: visible;"> ...bunch more defs... </defs> <g id="endpoints"> ...bunch of SVG with a some... <a xlink:href="javascript:gotoLogLine(16423,55);" xlink:type="simple">...more svg...</a> </g> </svg> I have run the output XML trough the WC3 validator for XML to verify it is valid. Like I said before, works in FireFox 3.6. I tried it on Safari and I got the same "undefined" so it seems to be related to Webkit.

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  • Using QT to build a WYSIWYG Editor for a Custom Markup Language

    - by Aaron
    I'm new to QT, and am trying to figure out the best means of creating a WYSIWYG editor widget for a custom markup language that displays simple text, images, and links. I need to be able to propagate changes from the WYSIWYG editor to the custom markup representation. As a concrete example of the problem domain, imagine that the custom markup might have a "player" tag which contains a player name and a team name. The markup could look like this: Last week, <player id="1234"><name>Aaron Rodgers</name><team>Packers</team></player> threw a pass. This text would display in the editor as: Last week, Aaron Rodgers of the Packers threw a pass. The player name and the team name would be editable directly within the editor in standard WYSIWYG fashion, so that my users do not have to learn any markup. Also, when the player name is moused-over, a details pop-up will appear about that player, and similarly for the team. With that long introduction, I'm trying to figure out where to start with QT. It seems that the most logical option would be the Rich Text API using a QTextDocument. This approach seems less than ideal given the limitations of a QTextDocument: I can't figure out how to capture navigation events from clicking on links. Following links on click seems to only be enabled when the QTextEdit is readonly. Custom objects that implement QTextObjectInterface are ignored in copy-and-paste operations Any HTML-based markup that is passed to it as Rich Text is retranslated into a series of span tags and lots of other junk, making it extremely difficult to propagate changes from the editor back to the original custom markup. A second option appears to be QWebKit, which allows for live editing of HTML5 markup, so I could specify a two-way translation between the custom markup and HTML5. I'm not clear on how one would propagate changes from the editor back to the original markup in real-time without re-translating the entire document on every text change. The QWebKit solutions looks like awfully bulky to me (Learning WebKit along with QT) to what should be a relatively simple problem. I have also considered implementing the WYSIWYG with a custom class using native QT containers, labels, images, and other widgets manually. This seems like the most flexible approach, and the one most likely not to run into unresolvable problems. However, I'm pretty sure that implementing all the details of a normal text editor (selecting text, font changes, cut-and-paste support, undo/redo, dragging of objects, cursor placement, etc.) will be incredibly time consuming. So, finally, my question: are there any QT gurus out there with some advice on where to start with this sort of project? BTW, I am using QT because the application is a desktop application that needs platform independence.

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  • Slow Memcached: Average 10ms memcached `get`

    - by Chris W.
    We're using Newrelic to measure our Python/Django application performance. Newrelic is reporting that across our system "Memcached" is taking an average of 12ms to respond to commands. Drilling down into the top dozen or so web views (by # of requests) I can see that some Memcache get take up to 30ms; I can't find a single use of Memcache get that returns in less than 10ms. More details on the system architecture: Currently we have four application servers each of which has a memcached member. All four memcached members participate in a memcache cluster. We're running on a cloud hosting provider and all traffic is running across the "internal" network (via "internal" IPs) When I ping from one application server to another the responses are in ~0.5ms Isn't 10ms a slow response time for Memcached? As far as I understand if you think "Memcache is too slow" then "you're doing it wrong". So am I doing it wrong? Here's the output of the memcache-top command: memcache-top v0.7 (default port: 11211, color: on, refresh: 3 seconds) INSTANCE USAGE HIT % CONN TIME EVICT/s GETS/s SETS/s READ/s WRITE/s cache1:11211 37.1% 62.7% 10 5.3ms 0.0 73 9 3958 84.6K cache2:11211 42.4% 60.8% 11 4.4ms 0.0 46 12 3848 62.2K cache3:11211 37.5% 66.5% 12 4.2ms 0.0 75 17 6056 170.4K AVERAGE: 39.0% 63.3% 11 4.6ms 0.0 64 13 4620 105.7K TOTAL: 0.1GB/ 0.4GB 33 13.9ms 0.0 193 38 13.5K 317.2K (ctrl-c to quit.) ** Here is the output of the top command on one machine: ** (Roughly the same on all cluster machines. As you can see there is very low CPU utilization, because these machines only run memcache.) top - 21:48:56 up 1 day, 4:56, 1 user, load average: 0.01, 0.06, 0.05 Tasks: 70 total, 1 running, 69 sleeping, 0 stopped, 0 zombie Cpu(s): 0.0%us, 0.0%sy, 0.0%ni, 99.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.3%st Mem: 501392k total, 424940k used, 76452k free, 66416k buffers Swap: 499996k total, 13064k used, 486932k free, 181168k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 6519 nobody 20 0 384m 74m 880 S 1.0 15.3 18:22.97 memcached 3 root 20 0 0 0 0 S 0.3 0.0 0:38.03 ksoftirqd/0 1 root 20 0 24332 1552 776 S 0.0 0.3 0:00.56 init 2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd 4 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kworker/0:0 5 root 20 0 0 0 0 S 0.0 0.0 0:00.02 kworker/u:0 6 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/0 7 root RT 0 0 0 0 S 0.0 0.0 0:00.62 watchdog/0 8 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 cpuset 9 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 khelper ...output truncated...

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  • Index out of bounds error

    - by sprasad12
    Hello, I am working on a program where i am recreating the saved widgets back on to the boundary panel. When i am creating them i am also trying to put the values into the ArrayList so that if i want to update and save the opened project i should be able to do so by getting the values from the ArrayList. Here is how the code looks like: for(int i = 0; i < result.length; i++){ if(ename.contains(result[i].getParticipateEntityName())){ ername.add(ename.indexOf(result[i].getParticipateEntityName()), result[i].getParticipateRelatioshipName()); etotalpartial.add(ename.indexOf(result[i].getParticipateEntityName()), result[i].getTotalPartial()); }else if(wename.contains(result[i].getParticipateEntityName())){ wrname.add(wename.indexOf(result[i].getParticipateEntityName()), result[i].getParticipateRelatioshipName()); } } Here ename, ername, etotalpartial, wename and wrname are all ArrayList. This piece of code is included in an asynchronous class method. When i run the code i get error at "ername.add(ename......". Here is the error stack: java.lang.IndexOutOfBoundsException: Index: 1, Size: 0 at java.util.ArrayList.add(ArrayList.java:367) at com.e.r.d.client.ERD1$16.onSuccess(ERD1.java:898) at com.e.r.d.client.ERD1$16.onSuccess(ERD1.java:1) at com.google.gwt.user.client.rpc.impl.RequestCallbackAdapter.onResponseReceived(RequestCallbackAdapter.java:216) at com.google.gwt.http.client.Request.fireOnResponseReceived(Request.java:287) at com.google.gwt.http.client.RequestBuilder$1.onReadyStateChange(RequestBuilder.java:393) at sun.reflect.GeneratedMethodAccessor16.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) 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:157) at com.google.gwt.dev.shell.BrowserChannel.reactToMessagesWhileWaitingForReturn(BrowserChannel.java:1713) at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:165) at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:120) at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:507) at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:264) 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:188) at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) 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:157) at com.google.gwt.dev.shell.BrowserChannel.reactToMessages(BrowserChannel.java:1668) at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:401) at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:222) at java.lang.Thread.run(Thread.java:619) I am not sure what i am doing wrong. Any input will be of great help. Thank you.

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  • jQuery remove div

    - by oshirowanen
    Hello, I have the following script jquery here: <script type="text/javascript"> $(function() { $(".column").sortable( { connectWith: '.column' }, { handle: '.widget-header' }, }); $(".widget").addClass("ui-widget ui-widget-content ui-helper-clearfix ui-corner-all") .find(".widget-header") .addClass("ui-widget-header ui-corner-all") .prepend('<span class="ui-icon ui-icon-minusthick"></span>') .end() .find(".widget-content"); $(".widget-header .ui-icon").click(function() { $(this).toggleClass("ui-icon-minusthick").toggleClass("ui-icon-plusthick"); $(this).parents(".widget:first").find(".widget-content").toggle(); }); $(".column").disableSelection(); }); </script> html here: <div class="divWidgets"> <div class="column" id="column_1"> <div class="widget" id="Widget_1"> <div class="widget-header" id="Widget_1_Header">widget one</div> <div class="widget-content" id="Widget_1_Content">widget one content goes here</div> </div> <div class="widget" id="Widget_0"> <div class="widget-header" id="Widget_0_Header">widget zero</div> <div class="widget-content" id="Widget_0_Content">widget zero content goes here</div> </div> </div> <div class="column" id="column_2"> <div class="widget" id="Widget_3"> <div class="widget-header" id="Widget_3_Header">widget three</div> <div class="widget-content" id="Widget_3_Content">widget three content goes here</div> </div> <div class="widget" id="Widget_5"> <div class="widget-header" id="Widget_5_Header">widget five</div> <div class="widget-content" id="Widget_5_Content">widget five content goes here</div> </div> </div> </div> As you can see, this script places a "minus" button on the widgets, which will minimize the appropriate widget when clicked. How do I replace this "minus" icon with a "delete" which will totally delete the appropriate div when clicked?

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  • Setting up nginx as proxy to apache; All good, but nginx doesn't serve media

    - by becomingGuru
    I have set it up such that nginx proxies request and sends django requests to apache and serves media itself. Following documents my setup: Nginx Configuration: /etc/nginx/nginx.conf user www-data; worker_processes 1; error_log /var/log/nginx/error.log; pid /var/run/nginx.pid; events { worker_connections 1024; } http { include /etc/nginx/mime.types; default_type application/octet-stream; access_log /var/log/nginx/access.log; sendfile on; tcp_nopush on; #keepalive_timeout 0; keepalive_timeout 65; tcp_nodelay on; gzip on; include /etc/nginx/sites-enabled/*; } ===== ngnix proxy /etc/nginx/proxy.conf ============ proxy_redirect off; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; client_max_body_size 10m; client_body_buffer_size 128k; proxy_connect_timeout 90; proxy_send_timeout 90; proxy_read_timeout 90; proxy_buffer_size 4k; proxy_buffers 4 32k; proxy_busy_buffers_size 64k; proxy_temp_file_write_size 64k; =========== Nginx server file: /etc/nginx/sites-enabled/some-name.txt ========== server { listen 208.109.252.110:80; server_name netconf; autoindex on; access_log /home/site/server_logs/nginx_access.log; error_log /home/site/server_logs/nginx_error.log; location / { proxy_pass http://127.0.0.1:80/; include /etc/nginx/proxy.conf; } location /site_media/ { root /home/site/folder/static; } } ========== Nginx very well proxies the request and passes to apache, the required requests, but doesn't serve the media. In the last server file, location site_media is not served, at all. :( Everything seems perfect to me. What is wrong? Thanks in advance.

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  • custom view with layout

    - by user270811
    ok, what i am trying to do is to embed a custom view in the default layout main.xml: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <com.lam.customview.CustomDisplayView android:id="@+id/custom_display_view1" android:layout_width="fill_parent" android:layout_height="fill_parent" /> <LinearLayout android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="wrap_content"> <Button android:id="@+id/prev" android:layout_width="0dip" android:layout_height="wrap_content" android:layout_weight="50" android:textAppearance="?android:attr/textAppearanceSmall" android:text="@string/prev" /> </LinearLayout> </LinearLayout> as you can see the class is called com.lam.customview.CustomDisplayView, with the id of custom_display_view1. now in the com.lam.customview.CustomDisplayView class, i want to use another layout called custom_display_view.xml because i don't want to programmatically create controls/widgets. custom_display_view.xml is just a button and an image, the content of which i want to change based on certain conditions: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <TextView android:id="@+id/display_text_view1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/hello" /> <ImageView android:id="@+id/display_image_view1" android:layout_width="wrap_content" android:layout_height="wrap_content"> </ImageView> </LinearLayout> i tried to do: 1) public CustomDisplayView(Context context, AttributeSet attrs) { super(context, attrs); try { // register our interest in hearing about changes to our surface SurfaceHolder holder = getHolder(); holder.addCallback(this); View.inflate(context, R.layout.custom_display_view, null); ... but got this error, "03-08 20:33:15.711: ERROR/onCreate(10879): Binary XML file line #8: Error inflating class java.lang.reflect.Constructor ". 2) public CustomDisplayView(Context context, AttributeSet attrs) { super(context, attrs); try { // register our interest in hearing about changes to our surface SurfaceHolder holder = getHolder(); holder.addCallback(this); View.inflate(context, R.id.custom_display_view1, null); ... but got this error, "03-08 20:28:47.401: ERROR/CustomDisplayView(10806): Resource ID #0x7f050002 type #0x12 is not valid " also, if i do it this way, as someone has suggested, it's not clear to me how the custom_display_view.xml is associated with the custom view class. thanks.

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  • jqModal and jquery widget long shot

    - by rod
    Hi All, I just started playing around with jquery widgets within my jqmodals in my mvc app. I know this may be a long shot but I'll take it. Initially, I can click the Add link, get the alert ("which is the prize", watching too much tv), next click cancel to close modal and get the desired results. I can, then, click the Edit link and get the same desired results. However, if I click Edit link first then I try to click the Add link, "forget about it" I don't get the alert (which means my widget did not init). But I can still go back and click Edit and get the prize (the alert message). ajax: "/Home/EditPrintAdLine" and ajax: "/Home/AddPrintAdLine" render the same web user control Any ideas? <%@ Page Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage" %> <asp:Content ID="indexTitle" ContentPlaceHolderID="TitleContent" runat="server"> Home Page </asp:Content> <asp:Content ID="indexContent" ContentPlaceHolderID="MainContent" runat="server"> <h2><%= Html.Encode(ViewData["Message"]) %></h2> <p> To learn more about ASP.NET MVC visit <a href="http://asp.net/mvc" title="ASP.NET MVC Website">http://asp.net/mvc</a>. </p> <div id="printAdLineEditDialog" class="jqmWindow"></div> <div id="printAdDialog" class="jqmWindow"></div> <table> <tr><td><a id="printAdLineItem" href="#">Add a Line Item</a></td></tr> <tr><td><a id="editPrintAdLine" href="#">Edit</a></td></tr> </table> <script type="text/javascript"> $(document).ready(function() { $.widget("ui.my_widget", { _init: function() { alert("My widget was instantiated"); } }); // Add line $('#printAdLineItem').click(function(e) { $('#printAdDialog').jqmShow(this); e.preventDefault(); }); $('#printAdDialog').jqm({ ajax: "/Home/AddPrintAdLine", onLoad: function(hash) { $('#PrintAdLine_RunDate').my_widget(); } }); // Edit line $('#editPrintAdLine').click(function(e) { $('#printAdLineEditDialog').jqmShow(this); e.preventDefault(); }); $('#printAdLineEditDialog').jqm({ ajax: "/Home/EditPrintAdLine", onLoad: function(hash) { $('#PrintAdLine_RunDate').my_widget(); } }); }); </script> </asp:Content>

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  • Apache server completely freezes until it gets restarted

    - by nbv4
    My server does this every few days. What sucks is that it always seems to do this right after I go to bed, so when I wake up, I'm greeted with the fact that my server has been down for the past 6 or 7 hours. When I first noticed this, I added a cronjob that tries to restart the server every 15 minutes, but I guess that didn't fix it. Once I noticed the server was down, I can this command: /etc/init.d/apache2 restart * Restarting web server apache2 apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName ... waiting ...........................................................apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName httpd (pid 17597) already running ...which is odd, because a restart should restart the server, even if it's already running, correct? I eventually had to "stop" then "start" to get it working again. I then looked through the logs, and found something very weird. It seems that around the time the server crashed, the logs have entries that are wildly out of order. It looks a little like this: xx.xxx.xxx.x - - [21/Apr/2010:06:32:05 -0400] "GET / blah" xx.xxx.xxx.x - - [21/Apr/2010:06:51:25 -0400] "GET / blah" x.xx.xxx.xxx - - [21/Apr/2010:06:38:23 -0400] "GET / blah" xxx.xx.xx.xx - - [21/Apr/2010:06:31:56 -0400] "GET / blah" xxx.xx.xx.xx - - [21/Apr/2010:06:51:49 -0400] "GET / blah" xx.xx.xxx.xx - - [21/Apr/2010:06:33:20 -0400] "GET / blah" I don't think the problem is memory, because this: tells me that right before the crash, memory usage is fine. I'm running apache with the worker mpm, here are the settings for that: <IfModule mpm_worker_module> StartServers 1 MaxClients 100 MinSpareThreads 5 MaxSpareThreads 10 ThreadsPerChild 10 MaxRequestsPerChild 3000 </IfModule> This apache server is running a bunch of stuff, but most of the traffic comes from a django project I'm hosting, that uses mod_wsgi. There also is a simple machines forum that is running off of mod_fcgid. Those setting are below: <IfModule mod_fcgid.c> MaxRequestsPerProcess 500 MaxProcessCount 3 AddHandler fcgid-script .php .fcgi AddHandler cgi-script .cgi .pl FCGIWrapper "/usr/bin/php-cgi" .php </IfModule> Anyone know of anything else I can check? I've just about tweaked every single setting I can think of, yet these freezes still happen.

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  • Phonegap web view thinks device screen taller than it is - results in offscreen tabbar

    - by Stin
    I have a jQTouch application loaded via server, so all I need to do is display the webpage full screen in PhoneGap for a faux-Native app. Unfortunatley each solution I've tried in PhoneGap has an issue: it thinks the screen size is taller than it is. This resuls in the tabbar that is pinned to the bottom being permantly offscreen and there fore unusable. You should be able to recreate this with my code below and going to the iTabbar online demo. Any thoughts on how to correct this issue? For background, going to the app page in iOS safari works fine, as well as saving the page to the home screen. In both cases the webview stops at the bottom of the screen and the tabbar is therefore viewable. Also, I'm using build.phonegap.com to compile (I'm not compiling locally) I've tried two methods: load the childBrowser plugin and call up the page (with navbar hidden via options) set the following config.xml parameter to prevent phonegap from switching to Safari, and then just load the link (preferable as it's cleaner in my mind. I've pasted my index.html and config.xml below) Details on the config.xml paramater: Open all links in WebView stay-in-webview with values true or false example: <preference name="stay-in-webview" value="true" /> if set to true, all links (even with target set to blank) will open in the app's webview only use this preference if you want pages from your server to take over your entire app default is false (Source: https://build.phonegap.com/docs/config-xml) my index.html: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <meta http-equiv="Content-type" content="text/html;charset=utf-8"> <title>MyApp</title> <script src="phonegap.js"></script> </head> <body> <p><a href="http://www.itabbar.com/itabbar/demo.html#home">Launch iTabbar</a></p> </body> </html> my config.xml: <?xml version="1.0" encoding="UTF-8" ?> <widget xmlns = "http://www.w3.org/ns/widgets" xmlns:gap = "http://phonegap.com/ns/1.0" id = "com.phonegap.myapp" versionCode="10" version = "1.0.0"> <!-- versionCode is optional and Android only --> <name>MyApp</name> <description> My app is... </description> <author href="https://myurl.com" email="[email protected]"> me </author> <preference name="stay-in-webview" value="true" /> </widget>

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  • Yes, another thread question...

    - by Michael
    I can't understand why I am loosing control of my GUI even though I am implementing a thread to play a .wav file. Can someone pin point what is incorrect? #!/usr/bin/env python import wx, pyaudio, wave, easygui, thread, time, os, sys, traceback, threading import wx.lib.delayedresult as inbg isPaused = False isStopped = False class Frame(wx.Frame): def __init__(self): print 'Frame' wx.Frame.__init__(self, parent=None, id=-1, title="Jasmine", size=(720, 300)) #initialize panel panel = wx.Panel(self, -1) #initialize grid bag sizer = wx.GridBagSizer(hgap=20, vgap=20) #initialize buttons exitButton = wx.Button(panel, wx.ID_ANY, "Exit") pauseButton = wx.Button(panel, wx.ID_ANY, 'Pause') prevButton = wx.Button(panel, wx.ID_ANY, 'Prev') nextButton = wx.Button(panel, wx.ID_ANY, 'Next') stopButton = wx.Button(panel, wx.ID_ANY, 'Stop') #add widgets to sizer sizer.Add(pauseButton, pos=(1,10)) sizer.Add(prevButton, pos=(1,11)) sizer.Add(nextButton, pos=(1,12)) sizer.Add(stopButton, pos=(1,13)) sizer.Add(exitButton, pos=(5,13)) #initialize song time gauge #timeGauge = wx.Gauge(panel, 20) #sizer.Add(timeGauge, pos=(3,10), span=(0, 0)) #initialize menuFile widget menuFile = wx.Menu() menuFile.Append(0, "L&oad") menuFile.Append(1, "E&xit") menuBar = wx.MenuBar() menuBar.Append(menuFile, "&File") menuAbout = wx.Menu() menuAbout.Append(2, "A&bout...") menuAbout.AppendSeparator() menuBar.Append(menuAbout, "Help") self.SetMenuBar(menuBar) self.CreateStatusBar() self.SetStatusText("Welcome to Jasime!") #place sizer on panel panel.SetSizer(sizer) #initialize icon self.cd_image = wx.Image('cd_icon.png', wx.BITMAP_TYPE_PNG) self.temp = self.cd_image.ConvertToBitmap() self.size = self.temp.GetWidth(), self.temp.GetHeight() wx.StaticBitmap(parent=panel, bitmap=self.temp) #set binding self.Bind(wx.EVT_BUTTON, self.OnQuit, id=exitButton.GetId()) self.Bind(wx.EVT_BUTTON, self.pause, id=pauseButton.GetId()) self.Bind(wx.EVT_BUTTON, self.stop, id=stopButton.GetId()) self.Bind(wx.EVT_MENU, self.loadFile, id=0) self.Bind(wx.EVT_MENU, self.OnQuit, id=1) self.Bind(wx.EVT_MENU, self.OnAbout, id=2) #Load file usiing FileDialog, and create a thread for user control while running the file def loadFile(self, event): foo = wx.FileDialog(self, message="Open a .wav file...", defaultDir=os.getcwd(), defaultFile="", style=wx.FD_MULTIPLE) foo.ShowModal() self.queue = foo.GetPaths() self.threadID = 1 while len(self.queue) != 0: self.song = myThread(self.threadID, self.queue[0]) self.song.start() while self.song.isAlive(): time.sleep(2) self.queue.pop(0) self.threadID += 1 def OnQuit(self, event): self.Close() def OnAbout(self, event): wx.MessageBox("This is a great cup of tea.", "About Jasmine", wx.OK | wx.ICON_INFORMATION, self) def pause(self, event): global isPaused isPaused = not isPaused def stop(self, event): global isStopped isStopped = not isStopped class myThread (threading.Thread): def __init__(self, threadID, wf): self.threadID = threadID self.wf = wf threading.Thread.__init__(self) def run(self): global isPaused global isStopped self.waveFile = wave.open(self.wf, 'rb') #initialize stream self.p = pyaudio.PyAudio() self.stream = self.p.open(format = self.p.get_format_from_width(self.waveFile.getsampwidth()), channels = self.waveFile.getnchannels(), rate = self.waveFile.getframerate(), output = True) self.data = self.waveFile.readframes(1024) isPaused = False isStopped = False #main play loop, with pause event checking while self.data != '': # while isPaused != True: # if isStopped == False: self.stream.write(self.data) self.data = self.waveFile.readframes(1024) # elif isStopped == True: # self.stream.close() # self.p.terminate() self.stream.close() self.p.terminate() class App(wx.App): def OnInit(self): self.frame = Frame() self.frame.Show() self.SetTopWindow(self.frame) return True def main(): app = App() app.MainLoop() if __name__=='__main__': main()

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  • Possible bug with tabified QDockWidget and setFloating()

    - by krunk
    I've run into some odd behavior with tabified QDockWidgets, below is an example program with comments that demonstrates the behavior. Is this a bug or is it expected behavior and I'm missing some nuance in QDockWidget that causes this? Directly, since this does not work, how would one properly "undock" a hidden QDockWidget then display it? #include <QApplication> #include <QMainWindow> #include <QAction> #include <QDockWidget> #include <QMenu> #include <QSize> #include <QMenuBar> using namespace std; int main (int argc, char* argv[]) { QApplication app(argc, argv); QMainWindow window; QDockWidget dock1(&window); QDockWidget dock2(&window); QMenu menu("View"); dock1.setAllowedAreas(Qt::LeftDockWidgetArea | Qt::RightDockWidgetArea); dock2.setAllowedAreas(Qt::LeftDockWidgetArea | Qt::RightDockWidgetArea); dock1.setWindowTitle("Dock One"); dock2.setWindowTitle("Dock Two"); window.addDockWidget(Qt::RightDockWidgetArea, &dock1); window.addDockWidget(Qt::RightDockWidgetArea, &dock2); window.menuBar()->addMenu(&menu); window.setMinimumSize(QSize(800, 600)); window.tabifyDockWidget(&dock1, &dock2); dock1.hide(); dock2.hide(); menu.addAction(dock1.toggleViewAction()); menu.addAction(dock2.toggleViewAction()); window.show(); // Below is where the oddness starts. It seems to only exhibit the // behavior if the dock widgets are tabified. // Odd behavior here // This does not work. the window never shows, though its menu action shows // checked. Not only does this window not show up, but all toggle actions // for all dock windows (e.g. dock1 and dock2) are broken for the duration // of the application loop. // dock1.setFloating(true); // dock1.show(); // This does work. . . of course only if you do _not_ run the above first. // however, you can often get a little lag or "blip" in the rendering as // the dock is shown docked before setFloating is set to true. dock1.show(); dock1.setFloating(true); return app.exec(); }

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  • jQuery tablesorter - loss of functionality after AJAX call

    - by Nick
    I have recently been experimenting with the tablesorter plugin for jQuery. I have successfully got it up and running in once instance, and am very impressed. However, I have tried to apply the tablesorter to a different table, only to encounter some difficulties... Basically the table causing a problem has a <ul> above it which acts as a set of tabs for the table. so if you click one of these tabs, an AJAX call is made and the table is repopulated with the rows relevant to the specific tab clicked. When the page initially loads (i.e. before a tab has been clicked) the tablesorter functionality works exactly as expected. But when a tab is clicked and the table repopulated, the functionality disappears, rendering it without the sortable feature. Even if you go back to the original tab, after clicking another, the functionality does not return - the only way to do so is a physical refresh of the page in the browser. I have seen a solution which seems similar to my problem on this site, and someone recommends using the jQuery plugin, livequery. I have tried this but to no avail :-( If someone has any suggestions I would be most appreciative. I can post code snippets if it would help (though I know the instantiation code for tablesorter is fine as it works on tables with no tabs - so it's definitely not that!) EDIT: As requested, here are some code snippets: The table being sorted is <table id="#sortableTable#">..</table>, the instantiation code for tablesorter I am using is: $(document).ready(function() { $("#sortableTable").tablesorter( { headers: //disable any headers not worthy of sorting! { 0: { sorter: false }, 5: { sorter: false } }, sortMultiSortKey: 'ctrlKey', debug:true, widgets: ['zebra'] }); }); And I tried to rig up livequery as follows: $("#sortableTable").livequery(function(){ $(this).tablesorter(); }); This has not helped though... I am not sure whether I should use the id of the table with livequery as it is the click on the <ul> I should be responding to, which is of course not part of the table itself. I have tried a number of variations in the hope that one of them will help, but to no avail :-(

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  • Varnish server in front of nginx server with multiple virtualhosts

    - by Garreth 00
    I have tried to search for a solution for this, but can't find any documentation/tips on my specific setup. My setup: Backendserver: ngnix: 2 different websites (2 top domains) in virtualenv, running gunicorn/python/django Backendserver hardware(VPS) 2gb ram, 8 CPU Databaseserver: postgresql - pg_bouncer Backendserver hardware (VPS) 1gb ram, 8 CPU Varnishserver: only running varnish Varnishserver hardware (VPS) 1gb ram, 8 CPU I'm trying to set up a varnish server to handle rare spike in traffic (20 000 unique req/s) The spike happens when a tv program mention one of the sites. What do I need to do, to make the varnish server cache both sites/domains on my backendserver? My /etc/varnish/default.vcl : backend django_backend { .host = "local.backendserver.com"; .port = "8080"; } My /usr/local/nginx/site-avaible/domain1.com upstream gunicorn_domain1 { server unix:/home/<USER>/.virtualenvs/<DOMAIN1>/<APP1>/run/gunicorn.sock fail_timeout=0; } server { listen 80; listen 8080; server_name domain1.com; rewrite ^ http://www.domains.com$request_uri? permanent; } server { listen 80 default_server; listen 8080; client_max_body_size 4G; server_name www.domain1.com; keepalive_timeout 5; # path for static files root /home/<USER>/<APP>-media/; location / { proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; proxy_redirect off; if (!-f $request_filename) { proxy_pass http://gunicorn_domain1; break; } } } My /usr/local/nginx/site-avaible/domain2.com upstream gunicorn_domain2 { server unix:/home/<USER>/.virtualenvs/<DOMAIN2>/<APP2>/run/gunicorn.sock fail_timeout=0; } server { listen 80; listen 8080; server_name domain2.com; rewrite ^ http://www.domains.com$request_uri? permanent; } server { listen 80; listen 8080; client_max_body_size 4G; server_name www.domain2.com; keepalive_timeout 5; # path for static files root /home/<USER>/<APP>-media/; location / { proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; proxy_redirect off; if (!-f $request_filename) { proxy_pass http://gunicorn_domain2; break; } } } Right now, If I try the Ip of the varnishserver I only get served domain1.com. Would everything be correct if I change the DNS of the two domain to point to the varnishserver, or is there extra setup before it would work? Question 2: Do I need a dedicated server for varnish, or could I just install varnish on my backendserver, or would the server run out of memory quick?

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  • Javascript self contained sandbox events and client side stack

    - by amnon
    I'm in the process of moving a JSF heavy web application to a REST and mainly JS module application . I've watched "scalable javascript application architecture" by Nicholas Zakas on yui theater (excellent video) and implemented much of the talk with good success but i have some questions : I found the lecture a little confusing in regards to the relationship between modules and sandboxes , on one had to my understanding modules should not be effected by something happening outside of their sandbox and this is why they publish events via the sandbox (and not via the core as they do access the core for hiding base libary) but each module in the application gets a new sandbox ? , shouldn't the sandbox limit events to the modoules using it ? or should events be published cross page ? e.g. : if i have two editable tables but i want to contain each one in a different sandbox and it's events effect only the modules inside that sandbox something like messabe box per table which is a different module/widget how can i do that with sandbox per module , ofcourse i can prefix the events with the moduleid but that creates coupling that i want to avoid ... and i don't want to package modules toghter as one module per combination as i already have 6-7 modules ? while i can hide the base library for small things like id selector etc.. i would still like to use the base library for module dependencies and resource loading and use something like yui loader or dojo.require so in fact i'm hiding the base library but the modules themself are defined and loaded by the base library ... seems a little strange to me libraries don't return simple js objects but usualy wrap them e.g. : u can do something like $$('.classname').each(.. which cleans the code alot , it makes no sense to wrap the base and then in the module create a dependency for the base library by executing .each but not using those features makes a lot of code written which can be left out ... and implemnting that functionality is very bug prone does anyonen have any experience with building a front side stack of this order ? how easy is it to change a base library and/or have modules from different libraries , using yui datatable but doing form validation with dojo ... ? some what of a combination of 2+4 if u choose to do something like i said and load dojo form validation widgets for inputs via yui loader would that mean dojocore is a module and the form module is dependant on it ? Thanks .

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  • AJAX, same-origin Policy and working XML Requests

    - by Joern
    Hello guys, so, currently I develop Widgets for Smartphones and am going a bit more advanced into fields of data exchange between client and server applications. My problem is: For my current project I want my client file to request data from a PHP script with the help of AJAX XmlHttpRequest and the POST method: function xmlRequestNotes() { var parameter = 'p=1234'; xmlhttp = new XMLHttpRequest(); xmlhttp.open("POST", url, true); // Http Header xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); xmlhttp.setRequestHeader("Content-length", parameter.length); xmlhttp.setRequestHeader("Connection", "close"); xmlhttp.onreadystatechange=function() { if (xmlhttp.readyState==4 && xmlhttp.status==200) { json = JSON.parse(xmlhttp.responseText); // Doing Stuff with the Response } }; xmlhttp.send(parameter); } This works perfectly fine on my local server set up in XAMPP and the local Widget emulator. But if it gets onto the device (also with access to the target network) I receive the 101 Network Error. And as far as I have read, this is due to the "Same-Origin Policy" of XmlHttpRequests? My problem is to really understand that. Although the idea of this policy is clear to me, I'm a bit confused by the fact that another XmlHttpRequest for a Yahoo Weather XML Feed works fine. Now, could anyone be so helpful to enlighten me? Here is the request that returns a city name from Yahoo's weather feed: function getCityName() { xmlhttp = new XMLHttpRequest(); xmlhttp.open("GET", "http://weather.yahooapis.com/forecastrss?w=645458&u=c", true); xmlhttp.onreadystatechange = function() { if (xmlhttp.readyState==4 && xmlhttp.status==200) { xmlhttp.responseXML; var yweather = "http://xml.weather.yahoo.com/ns/rss/1.0"; alert(xmlhttp.responseXML.getElementsByTagNameNS(yweather, "location")[0].getAttribute("city")); } }; xmlhttp.send(null); } Obvious differences are the POST and GET methods for once, but seeing that the Same-Origin Policy takes effect no matter what method, I can't really make much sense of it. Why does the latter request work but not the first? I would really appreciate some help here. Greetings and a merry Christmas to you guys!

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  • Memory Leak with jQuery UI inside UpdatePanel in ie7

    - by Ryan
    I have a fairly complex asp.net page based on UpdatePanels and jQuery UI. Unfortunately, when the panels update, the jQuery UI widgets leak memory like crazy in ie7, even if I manually 'destroy' them. Does anyone know a technique/patch to prevent these leaks? I've created a simple example page with a slider inside an UpdatePanel. Just click the 'Leak' button and refresh the page to see the leak in sieve. <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Leak2.aspx.cs" Inherits="Leak2" %> <%@ Register Assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" Namespace="System.Web.UI" TagPrefix="asp" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title>Leak</title> <link type="text/css" href="/jquery/css/custom-theme/jquery-ui-1.7.2.custom.css" rel="Stylesheet" /> <script type="text/javascript" src="/jquery/js/jquery-1.3.2.min.js"></script> <script type="text/javascript" src="/jquery/js/jquery-ui-1.7.2.custom.min.js"></script> </head> <body> <form id="form1" runat="server"> <div> <script type="text/javascript"> function initializeSlider() { $(".slider").slider({ min: 0, max: 100, value: 100, step: 5 }); } $(document).ready(function() { initializeSlider(); Sys.WebForms.PageRequestManager.getInstance().add_endRequest(function() { initializeSlider(); }); }); </script> <asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager> <asp:UpdatePanel ID="UpdatePanel1" runat="server"> <ContentTemplate> <div style="width: 300px;"> <div class="slider"></div> <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Leak" /> </div> </ContentTemplate> </asp:UpdatePanel> </div> </form> </body> </html>

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  • Issues in Ajax based applications

    - by Sinuhe
    I'm very interested in developing Ajax based applications. This is, loading almost all of the content of the application via XMLHttpRequest, instead of only some combos and widgets. But if I try to do this form scratch, soon I find some problems without an easy solution. I wonder if there is some framework (both client and server side) to deal with this issues. As far as I know, there isn't (but I've searched mainly in Java world). So I am seriously thinking of doing my own framework, at least for my projects. Therefore, in this question I ask for several things. First, the possible problems of an ajax based development. Then, I'm looking for some framework or utility in order to deal with them. Finally, if there is no framework available, what features must it have. Here are the issues I thought: 1 - JavaScript must be enabled. Security paranoia isn't the only problem: a lot of mobile devices couldn't use the application, too. 2 - Sometimes you need to update more than one DIV (e.g. main content, menu and breadcrumbs). 3 - Unknown response type: when you make an Ajax call, you set the callback function too, usually specifying if expected response is a javascript object or in which DIV put the result. But this fails when you get another type of response: for example when the session has expired and the user must log in again. 4 - Browser's refresh, back and forward buttons can be a real pain. User will expect different behaviors depending on the situation. 5 - When search engines indexes a site, only follow links. Thus, content load by Ajax won't "exist" for who doesn't know about it yet. 6 - Users can ask for open a link in a different window/tab. 7 - Address bar doesn't show the "real" page you are in. So, you can't copy the location and send it to a friend or bookmark the page. 8 - If you want to monetize the site, you can put some advertisings. As you don't refresh entire page and you want to change the ad after some time, you have to refresh only the DIV where the ad is. But this can violate the Terms and Conditions of your ad service. In fact, it can go against AdSense TOS. 9 - When you refresh an entire page, all JavaScript gets "cleaned". But in Ajax calls, all JavaScript objects will remain. 10 - You can't easily change your CSS properties.

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  • Tips for maximizing Nginx requests/sec?

    - by linkedlinked
    I'm building an analytics package, and project requirements state that I need to support 1 billion hits per day. Yep, "billion". In other words, no less than 12,000 hits per second sustained, and preferably some room to burst. I know I'll need multiple servers for this, but I'm trying to get maximum performance out of each node before "throwing more hardware at it". Right now, I have the hits-tracking portion completed, and well optimized. I pretty much just save the requests straight into Redis (for later processing with Hadoop). The application is Python/Django with a gunicorn for the gateway. My 2GB Ubuntu 10.04 Rackspace server (not a production machine) can serve about 1200 static files per second (benchmarked using Apache AB against a single static asset). To compare, if I swap out the static file link with my tracking link, I still get about 600 requests per second -- I think this means my tracker is well optimized, because it's only a factor of 2 slower than serving static assets. However, when I benchmark with millions of hits, I notice a few things -- No disk usage -- this is expected, because I've turned off all Nginx logs, and my custom code doesn't do anything but save the request details into Redis. Non-constant memory usage -- Presumably due to Redis' memory managing, my memory usage will gradually climb up and then drop back down, but it's never once been my bottleneck. System load hovers around 2-4, the system is still responsive during even my heaviest benchmarks, and I can still manually view http://mysite.com/tracking/pixel with little visible delay while my (other) server performs 600 requests per second. If I run a short test, say 50,000 hits (takes about 2m), I get a steady, reliable 600 requests per second. If I run a longer test (tried up to 3.5m so far), my r/s degrades to about 250. My questions -- a. Does it look like I'm maxing out this server yet? Is 1,200/s static files nginx performance comparable to what others have experienced? b. Are there common nginx tunings for such high-volume applications? I have worker threads set to 64, and gunicorn worker threads set to 8, but tweaking these values doesn't seem to help or harm me much. c. Are there any linux-level settings that could be limiting my incoming connections? d. What could cause my performance to degrade to 250r/s on long-running tests? Again, the memory is not maxing out during these tests, and HDD use is nil. Thanks in advance, all :)

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