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• How to bind to another event after ajax call in jquery

  - by robert

  Hi, I'm creating a graph using flot javascript library. I have enabled clickable event and the div is binded to plotclick event. So, when a datapoint is clicked, an ajax call is made and the result is used to replace the current div. After this i need to bind the div to a new event. I tried to call bind, but it is still bound to old callback. When i call unbind and bind, the new callback is not called. var handleTeacherClick = function( event, pos, item ) { if( typeof item != "undefined" && item ) { var user_id = jQuery( 'input[name="id' + item.datapoint[0] + '"]' ).val(); jQuery.ajax({ type: 'POST', url: BASEPATH + 'index.php/ajax/home/latest', data: { "user_id": user_id }, dataType: 'json', success: function ( result ) { jQuery.plot(jQuery('#stats_prog'), result.progress_data, result.progress_options); jQuery.plot(jQuery('#stats_perf'), result.performance_data, result.performance_options); jQuery('.stats_title'). html('<span class="stats_title">'+ ' >> Chapter '+Math.ceil(item.datapoint[0])+'</span>'); jQuery('#stats_prog')./*unbind("plotclick").*/ bind('plotclick', statClickHandler ); jQuery('#stats_perf')./*unbind("plotclick"). */ bind( 'plotclick', statClickHandler ); }, }); } }

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• Handle window scroll event in greasemonkey script

  - by Akim Khalilov

  Hi. I need some advice. I have a web page and want to extend it's functionality with greasemonkey script and firefox. When page has loaded I need run custom function during user's page scrolling (with mouse whell or scrollbar). I want show some div block when user scrolling down and hide it when he scrolling to the top. But I met some problem - I couldn't assign event handler to the onscroll event. I use next part of the code: function showFixedBlock(){ ... } function onScrollStart(){ ... showFixedBlock(); ... } window.onscroll = onScrollStart; I test this piece of code on my test html page and it works, but when I copy it into greasemonkey, script doesn't work. Should I assign onscroll event handler during page loading? As I know greasemonkey execute it's scripts when page has loaded? Is it the reason of the problem? Is there some additional requirments to handle 'onscroll' event? How can I do that? Thanks.

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• "SpeechHypothesized event not raised"

  - by Jankhana

  Hi all, I need to detect the user voice when they pick-up the reciever on the other end. Because Modems usually start playing files (playback terminal) when the first ring goes there. So I planned to use speech recognition when they say "hello", it can start playing the file until wait for playing file. Or even any noise interference it can start speak. I accomplished this with few settings. I found few common words that my engine detects when we speak and the words that comes when it's ringing. It works fine as a stand alone application but if I try to integrate this with my application it just does not raises "SpeechHypothesized" event. I cant understand why this happens. If i see using a break point, the engine is having the delegate assign and invocation property also is initialized properly but than to is doesn't call the event. For calling I'm using C4F tapi manager and for speech recognition i'm using System.Speech library of .Net 3.5. The code for events is as follows : engine.SpeechDetected += new EventHandler<SpeechDetectedEventArgs>(engine_SpeechDetected); engine.SpeechRecognized += new EventHandler<SpeechRecognizedEventArgs>(engine_SpeechRecognized); engine.SpeechHypothesized+=new EventHandler<SpeechHypothesizedEventArgs> (engine_SpeechHypothesized); engine.SpeechRecognitionRejected += new EventHandler<SpeechRecognitionRejectedEventArgs>(engine_SpeechRecognitionRejected); All event's are raised except the speechhypothesized event. Any idea why this happens ????

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• Observer Design Pattern - multiple event types

  - by David

  I'm currently implementing the Observer design pattern and using it to handle adding items to the session, create error logs and write messages out to the user giving feedback on their actions (e.g. You've just logged out!). I began with a single method on the subject called addEvent() but as I added more Observers I found that the parameters required to detail all the information I needed for each listener began to grow. I now have 3 methods called addMessage(), addStorage() and addLog(). These add data into an events array that has a key related to the event type (e.g. log, message, storage) but I'm starting to feel that now the subject needs to know too much about the listeners that are attached. My alternative thought is to go back to addEvent() and pass an event type (e.g. USER_LOGOUT) along with the data associated and each Observer maintains it's own list of event handles it is looking for (possibly in a switch statement), but this feels cumbersome. Also, I'd need to check that sufficient data had also been passed along with the event type. What is the correct way of doing this? Please let me know if I can explain any parts of this further. I hope you can help and see the problem I'm battling with.

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• how to clear the 'double right click ' on google-map-v3..

  - by zjm1126

  this is my code, and I can't remove the mousedown eventlistener : //*********** double right click ********/ var c =0 ; function time(event){ if(event.button == 2){ c++; setTimeout(cc, 600); } if (c >1){ alert('ok i get it') } } //$('#map_canvas')[0].mousedown(time); $('#map_canvas')[0].addEventListener('mousedown', time, false); //$("map_canvas").unbind() //$('map_canvas')[0].onmousedown=function(){};//this can't be clear the event $('map_canvas')[0].removeEventListener('mousedown', time, false); function cc(){ c=0; } //*********** double right click ********/

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• Multiset of shared_ptrs as a dynamic priority queue: Concept and practice

  - by Sarah

  I was using a vector-based priority queue typedef std::priority_queue< Event, vector< Event >, std::greater< Event > > EventPQ; to manage my Event objects. Now my simulation has to be able to find and delete certain Event objects not at the top of the queue. I'd like to know if my planned work-around can do what I need it to, and if I have the syntax right. I'd also like to know if dramatically better solutions exist. My plan is to make EventPQ a multiset of smart pointers to Event objects: typedef std::multi_set< boost::shared_ptr< Event > > EventPQ; I'm borrowing functions of the Event class from a related post on a multimap priority queue. // Event.h #include <cstdlib> using namespace std; #include <set> #include <boost/shared_ptr.hpp> class Event; typedef std::multi_set< boost::shared_ptr< Event > > EventPQ; class Event { public: Event( double t, int eid, int hid ); ~Event(); void add( EventPQ& q ); void remove(); bool operator < ( const Event & rhs ) const { return ( time < rhs.time ); } bool operator > ( const Event & rhs ) const { return ( time > rhs.time ); } double time; int eventID; int hostID; EventPQ* mq; EventPQ::iterator mIt; }; // Event.cpp Event::Event( double t, int eid, int hid ) { time = t; eventID = eid; hostID = hid; } Event::~Event() {} void Event::add( EventPQ& q ) { mq = &q; mIt = q.insert( boost::shared_ptr<Event>(this) ); } void Event::remove() { mq.erase( mIt ); mq = 0; mIt = EventPQ::iterator(); } I was hoping that by making EventPQ a container of pointers, I could avoid wasting time copying Events into the container and avoid accidentally editing the wrong copy. Would it be dramatically easier to store the Events themselves in EventPQ instead? Does it make more sense to remove the time keys from Event objects and use them instead as keys in a multimap? Assuming the current implementation seems okay, my questions are: Do I need to specify how to sort on the pointers, rather than the objects, or does the multiset automatically know to sort on the objects pointed to? If I have a shared_ptr ptr1 to an Event that also has a pointer in the EventPQ container, how do I find and delete the corresponding pointer in EventPQ? Is it enough to .find( ptr1 ), or do I instead have to find by the key (time)? Is the Event::remove() sufficient for removing the pointer in the EventPQ container? There's a small chance multiple events could be created with the same time (obviously implied in the use of multiset). If the find() works on event times, to avoid accidentally deleting the wrong event, I was planning to throw in a further check on eventID and hostID. Does this seem reasonable? (Dumb syntax question) In Event.h, is the declaration of dummy class Event;, then the EventPQ typedef, and then the real class Event declaration appropriate? I'm obviously an inexperienced programmer with very spotty background--this isn't for homework. Would love suggestions and explanations. Please let me know if any part of this is confusing. Thanks.

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• Unit Testing an Event Firing From a Thread

  - by Dougc

  I'm having a problem unit testing a class which fires events when a thread starts and finishes. A cut down version of the offending source is as follows: public class ThreadRunner { private bool keepRunning; public event EventHandler Started; public event EventHandler Finished; public void StartThreadTest() { this.keepRunning = true; var thread = new Thread(new ThreadStart(this.LongRunningMethod)); thread.Start(); } public void FinishThreadTest() { this.keepRunning = false; } protected void OnStarted() { if (this.Started != null) this.Started(this, new EventArgs()); } protected void OnFinished() { if (this.Finished != null) this.Finished(this, new EventArgs()); } private void LongRunningMethod() { this.OnStarted(); while (this.keepRunning) Thread.Sleep(100); this.OnFinished(); } } I then have a test to check that the Finished event fires after the LongRunningMethod has finished as follows: [TestClass] public class ThreadRunnerTests { [TestMethod] public void CheckFinishedEventFiresTest() { var threadTest = new ThreadRunner(); bool finished = false; object locker = new object(); threadTest.Finished += delegate(object sender, EventArgs e) { lock (locker) { finished = true; Monitor.Pulse(locker); } }; threadTest.StartThreadTest(); threadTest.FinishThreadTest(); lock (locker) { Monitor.Wait(locker, 1000); Assert.IsTrue(finished); } } } So the idea here being that the test will block for a maximum of one second - or until the Finish event is fired - before checking whether the finished flag is set. Clearly I've done something wrong as sometimes the test will pass, sometimes it won't. Debugging seems very difficult as well as the breakpoints I'd expect to be hit (the OnFinished method, for example) don't always seem to be. I'm assuming this is just my misunderstanding of the way threading works, so hopefully someone can enlighten me.

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• Exited event of Process is not rised?

  - by Kanags.Net

  In my appliation,I am opening an excel sheet to show one of my Excel documents to the user.But before showing the excel I am saving it to a folder in my local machine which in fact will be used for showwing. While the user closes the application I wish to close the opened excel files and delete all the excel files which are present in my local folder.For this, in the logout event I have written code to close all the opened files like shown below, Process[] processes = Process.GetProcessesByName(fileType); foreach (Process p in processes) { IntPtr pFoundWindow = p.MainWindowHandle; if (p.MainWindowTitle.Contains(documentName)) { p.CloseMainWindow(); p.Exited += new EventHandler(p_Exited); } } And in the process exited event I wish to delete the excel file whose process is been exited like shown below void p_Exited(object sender, EventArgs e) { string file = strOriginalPath; if (File.Exists(file)) { //Pdf issue fix FileStream fs = new FileStream(file, FileMode.Open, FileAccess.Read); fs.Flush(); fs.Close(); fs.Dispose(); File.Delete(file); } } But the problem is this exited event is not called at all.On the other hand if I delete the file after closing the MainWindow of the process I am getting an exception "File already used by another process". Could any help me on how to achieve my objective or give me an reason why the process exited event is not being called?

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• Keeping the number of objects and event-listeners on stage as low as possible

  - by DevEight

  Hello. I am creating a site with lots of big scrollable text-boxes in it. Each text-box object contained some text, and two buttons to scroll up/down with. The scroll buttons each had an event listener so the text moved when you clicked them. These text-boxes were stacked on-top of each other with all except one having an alpha of 0. If I wanted to change which text-box is active I move it to the front and call a small TweenLite animation. To the left (outside of the text-box objects) I have an object similar to a menu. It also has about 12 or so event-listeners (one for every button). This turns out cause A LOT of lag an it's very troublesome for my laptop to run it. What I need help with doing is to reduce the number of event-listeners on the stage and also the amount of text-boxes. What I was thinking was to add the text-boxes using AS so I only have 1 on the stage at a time but I couldn't figure out how to do it. I also thought it might be better to just use 1 big event-listeners and from mouseX and mouseY decide which button the user is trying to push. Are there any better alternatives to this? And if so, please elaborate on how to do it.

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• Looking for: nosql (redis/mongodb) based event logging for Django

  - by Parand

  I'm looking for a flexible event logging platform to store both pre-defined (username, ip address) and non-pre-defined (can be generated as needed by any piece of code) events for Django. I'm currently doing some of this with log files, but it ends up requiring various analysis scripts and ends up in a DB anyway, so I'm considering throwing it immediately into a nosql store such as MongoDB or Redis. The idea is to be easily able to query, for example, which ip address the user most commonly comes from, whether the user has ever performed some action, lookup the outcome for a specific event, etc. Is there something that already does this? If not, I'm thinking of this: The "event" is a dictionary attached to the request object. Middleware fills in various pieces (username, ip, sql timing), code fills in the rest as needed. After the request is served a post-request hook drops the event into mongodb/redis, normalizing various fields (eg. incrementing the username:ip address counter) and dropping the rest in as is. Words of wisdom / pointers to code that does some/all of this would be appreciated.

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• C#. Saving information about events and event handlers and removing handlers using this information

  - by Philipp

  I have an object which is creating several event handlers using lambda expressions, and I need to remove all handlers created in that object in one time. I'm trying to create some unified static object which will 'know' which handler relates to which object and event if event handler was created through this static object. I tried something like code below, but I don't understand how to save events and event handlers objects, to be able remove handlers in one time. class Program { static void Main(string[] args) { var EventSender = new EventSender(); var EventReceiver = new EventReceiver(EventSender); EventSender.Invoke(" some var "); LinkSaver.RemoveEvent(EventReceiver); // ?? Console.ReadKey(); } } public class ObjLink{ public object Event; public object Action; } public static class LinkSaver { public static void SetEvent<T>(object obj, Action<T> Event, T Action) { Event(Action); var objLink = new ObjLink{Event = Event, Action = Action}; if (!Links.ContainsKey(obj)) Links.Add(obj, new List<ObjLink>{objLink}); else Links[obj].Add(objLink); } static Dictionary<object,List<ObjLink>> Links = new Dictionary<object, List<ObjLink>>(); public static void RemoveEvent(object obj){ foreach(var objLink in Links[obj]){ // objLink.Event -= objLink.Action; ??? } } } public class EventReceiver { public EventReceiver(EventSender obj) { LinkSaver.SetEvent<EventSender.TestDelegate>(this, obj.SetEvent, str => Console.WriteLine(str + " test event!")); } } public class EventSender { public void Invoke(string var) { if (eventTest != null) eventTest(var); } public void SetEvent(TestDelegate Action) { eventTest += Action; } public delegate void TestDelegate(string var); private event TestDelegate eventTest; // by the way public void RemoveFromEvent() { foreach (var handler in eventTest.GetInvocationList()) eventTest -= (TestDelegate)handler; } }

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• Custom Control Events in C#

  - by pm_2

  I'm trying to create a custom control and need to raise an event from it. The idea is to raise an event at the end of the click event (OnAfterClick). I found one or two tutorials on doing this, but am clearly missing a step somewhere; I have the following. In the control: public class AfterClickEventArgs : EventArgs { ... } public partial class MyButton : CommandButton { public delegate void AfterClickEvnt(object sender, AfterClickEventArgs e); public event AfterClickUpdatedEvnt AfterClick; } protected override void OnClick(EventArgs e) { ... Processing here ... AfterClickEventArgs myArgs = new AfterClickEventArgs(); AfterClick(this, newArgs); } In the program using the control: In InitializeComponent(): this.MyButton.AfterClick += new System.EventHandler(this.cmdMyButton_Click); This line is giving me a compile error (cmdMyButton_Click does exist). It tells me: Cannot implicitly convert type 'System.EventHandler' to 'Namespace.MyButton.AfterClick' Can anyone tell me what I'm missing, or misunderstanding about this, please?

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• Jquery UI autocomplete event change

  - by Stenly.k

  Hi I got a problem with change event. By documntation there should be object ui.item After an item was selected; ui.item refers to the selected item. Always triggered after the close event. But when I try it ui.item is undefined :( I want unset s_town_id when input in autocomplete doesn't match with data from script. Thx for any help. <input id="s_town" type="text" name="s_town" /> <input type="text" id="s_town_id" name="s_town_id" /> $(function() { $("#s_town").autocomplete({ source: function(request, response) { $.ajax({ url: "/_system/_ajax/uiautocomplete.php", dataType: "json", data: { name: "s_town", term: request.term }, success: function(data) { response($.map(data, function(item) { return { label: item.whisper_name+ " [" + item.zip_code + " / " + item.lup_state + "]", value: item.whisper_name, id: item.whisper_id, zip_code: item.zip_code, lup_state: item.lup_state, stateid: item.stateid } })) } }) }, minLength: 2, select: function(event, ui) { $("#s_town_id").val(ui.item.id); }, change: function(event, ui) { // ui.item is undefined :( where is the problem? $("#s_town_id").val(ui.item.id); } }); });

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• Access/update Telerik RadGrid item values in code-behind before ODS event handler

  - by Brent

  Hi there, I need to update some of the values of the item being edited in my code-behind based on some values in a custom Edit Form on our Rad Grid. Can I access the item (and update some values) from one of the Grid's event handlers? Currently I'm storing the values in temporary variables and then injecting the new values in the ObjectDataSource's Inserting/Updating event handlers, but it would be much nicer if I could do it all in one spot. (I can't do it all in the ObjectDataSource event handlers as I can't access the controls inside my Grid's Edit Form.) I've been playing with the ExtractValues and UpdateValues methods of the GridEditableItem object, but I'm not having any luck. Any tips would be greatly appreciated :)

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• Mouse Event BHO

  - by shaimagz

  I want my BHO to listen to onmousedown event of some element in a certain webpage. I have all the code that find the specific element, and in msdn its says that I need to use the get_onmousedown event. I came up with this code. CComQIPtr<IHTMLElement> someElement; VARIANT mouse_eve; someElement->get_onmousedown(&mouse_eve); The question is, how do I tell it to run some function when this event occurs?

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• Textbox OnTextChanged and Button Click Event Not Firing

  - by goodwince

  I have textboxes being generated by a repeater that use OnTextChanged with autopostback enabled so that I can know when when the values change. This all works perfect. The problem starts when I try to click on any buttons on the page. The loss of focus triggers the event for the OnTextChanged; however, the event for my buttons never get fired. I checked this in the debugger and while debugging if I put a break-point in the page_load it will call both; however, without the break-point it still only calls the OnTextChanged event. I found this post on JavaScript. If my problem is also JavaScript related, why does the clicking of the button fire in debug mode? Thanks.

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• Delphi 2010 buttons losing click event

  - by Lobuno

  I've been experimenting a quite strange problem using Delphi 2010. In one form (a quite complex one) some buttons are automagically losing the click event. I am not dynamically assigning the event or something (they are wired in IDE). The events are fired OK some times but suddenly (and randomly) some of them don't fire the events anymore. Placing a break point in the event doesn't stop the execution. Weird, yes, and I'm lost. I know there is no explanation for this so I only want to ask if there is anybody else experimenting the same problem.

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• Unit-test FileSystemWatcher.Error Event

  - by dotNetkow

  I'm trying to unit test a private method that I have attached to my FileSystemWatcher's Error event. MSDN says that this event "occurs when the internal buffer overflows." I've tried to cause a buffer overflow but have not been successful so far. The FileSystemWatcher's various properties are: fileWatcher.IncludeSubdirectories = false; fileWatcher.Filter = "*"; fileWatcher.NotifyFilter = (NotifyFilters.FileName | NotifyFilters.LastAccess | NotifyFilters.Size); What is the best way of raising this event for the purpose of unit-testing?

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• Rename "Event" object in jQuery FullCalendar plug-in

  - by Jeff

  GREAT PLUGIN!!! BUT... choice of word "Event" to mean a "calendar entry" was particularly unfortunate This is a wonderfully well-written plug in, and I've really impressed people here at work with what this thing can do. The documentation is astonishingly thorough and clear. Congratulations to Adam! HOWEVER, this plug-in refers to entries in the calendar as "Events" -- this has caused a lot of confusion in my development team's conversations, because when we use the word "Event" we think of things like onmouseover, click, etc. We would really prefer a term like CalendarEvent or CalendarEntry. I am not all that experienced with jQuery yet, so am wondering if there is a simple way to alias one of those terms to this plug-in's Event/Events object? (I know we could recode the plug-in directly, but our code will then break when we download an update.) Thanks!

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• how to fire the function event on PageLoad event of XtraReport ?

  - by ahmed

  I have a situation, I am working on a XtraReport where I am pulling some data from table.Now I created a function and passing a parameter at runtime for the report to generate. But when I fire the function event from a Onclick Button the result is perfect but when I fire the same function event on the page load of the ReportViewer ..I do not get the result. About function , i am creating dataset, and adapter with Sqlquery from runtime passing the parameter value from a session in the query and binding the data to the labels. But as I said I want the result on the pageload event of the reportviewer.

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• mouseOver event-mapping on iPad Safari with webkit-user-select: none

  - by Tim

  I don't have an iPad yet to find this out; have had only a brief opportunity to look at one at the Apple store. Could someone please describe what, if anything, happens to the mouseOver event of an image-map area when the image-map|area has had user-select disabled with "webkit-user-select: none" in the CSS, as described here in section 5: http://developer.apple.com/safari/library/technotes/tn2010/tn2262/index.html When a finger tip is placed on the image-map area and held there (i.e.not a tap) is the mouseOver eventhandler invoked under those circumstances? Or does nothing happen other than the image-map area doesn't change color because it's now unselectable? In my brief experience with the iPad at the Apple store, when user-select is not disabled, and the image-map area has a mouseOver eventhandler, a tap fires the mouseOver event rather than the click event. Thanks

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• How can I dispatch an PropertyChanged event from a subscription to an Interval based IObservable

  - by James Hay

  I'm getting an 'UnauthorizedAccesExpection - Invalid cross-thread access' exception when I try to raise a PropertyChanged event from within a subscription to an IObservable collection created through Observable.Interval(). With my limited threading knowledge I'm assuming that the interval is happening on some other thread while the event wants to happen on the UI thread??? An explanation of the problem would be very useful. The code looks a little like: var subscriber = Observable.Interval(TimeSpan.FromSeconds(1)) .Subscribe(x => { Prop = x; // setting property raises a PropertyChanged event }); Any solutions?

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• MS Dynamic CRM 4.0 serviceappointment closed state javascript event

  - by Jeroen

  Hi, I need to do the following: In Crm, you have serviceappointments (serviceactivities). 1 appointment can have a state, ( like arrived, pending, closed, ... ). When i save the form (onsave event), It should catch if the form is putted closed state and then it should do something. I can get the state easily: alert(crmForm.all.statuscode.DataValue) I hanged this onto an onsave event. But when i put a serviceappointment into closed state, it first calls the onsave event with previous state and then puts it in closed state. Is it possible to catch if it's putted in closed state?

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• Flex Datagrid editing cells in same row not firing collection change event

  - by Chin

  Hi, I am using the flex datagrid to allow the user to edit some data. My update process relies on a CollectionEvent of type update. Basically I catch this event package the values and update the database. However, if the user edits a cell then moves to edit a cell in the same row the value is updated but a collection event is not fired. Only when clicking out of the row the event is fired. Has anyone had experience with this. I have heard the datagrid is a little quirky is this one of those quirks or am I doing this all wrong? Any help appreciated.

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• jQuery event.stopPropagation is not working on <a>

  - by HorusKol

  I have the following javascript: $('#ge-display').click(function (event) { window.open('/googleearth/ge-display.php','','scrollbars=yes,menubar=no,height=650,width=1000,resizable=yes,toolbar=yes,location=no,status=no'); event.stopPropagation(); return false; }); the element with id 'ge-display' is a standard link: <a href="/googleearth/ge-display.php" id="ge-display" target="_blank">Load Google Earth Plugin (in a new window)</a> The problem is - when I take out the 'return false;' line from the click event handler, the javascript popup opens, and then another browser window opens - I thought stopPropagation() would prevent the links own click handler? I've also tried stopImmediatePropagation() - but I still need to return false to stop the default behaviour of the link.

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