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• Does anybody have practice in programming PCMEF - architectures?

  - by Erkki

  PCMEF is an architecture style presented in the book Practical Software Engineering by Maciaszek and Liong. The layers are: P: Presentation C: Controller M: Mediator E: Entity F: Foundation. It is some kind of enchancement compared with MVC - architecture. I recommend it to interactice, data and communicating - oriented purposes. I have programmed it using Visual Prolog. Foundation in my applications is the data model (domains) for the application. PCMEF is like a simulated computer: Presentation is the display, Controller the user interface and event handling, Mediator the internal logic and data highway. Entity is the database or external interfaces and F defines the knowledge. This is a really nice small architecture. Does any other have experiance of it?

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• crash in the handler that moves up a treenode in a treeview c#

  - by voodoomsr

  i have a event handler that moves the selected treenode up. I don't know why is crash in the line with comented. treeviewdocxml is a treeview object, from System.Windows.Forms treeViewDocXml.BeginUpdate(); TreeNode sourceNode = treeViewDocXml.SelectedNode; if (sourceNode.Parent == null) { return; } if (sourceNode.Index > 0) { sourceNode.Parent.Nodes.Remove(sourceNode); sourceNode.Parent.Nodes.Insert(sourceNode.Index - 1, sourceNode); //HERE CRASH } treeViewDocXml.EndUpdate();

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• Receive input over TCP/IP and use it to update HTML

  - by mawg

  This has got to be a FAQ, so can someone please just direct me to a "network programming for dummies" URL? The server wants to push information to a client or broadcast to all, when an event happens - as opposed to the clients constantly polling the server "just in case". The client then updates a browser page display. How do I do that? (toldya it was a n00b question) Should I have a thread which receives info on a socket and then writes it to a database which the browser display (PHP) can process with an HTML refresh tag, or what? Sorry to sound so dumb.

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• Safari won't request video or audio from HTML 5 media elements?

  - by thure

  So far what I've been developing has worked in Chrome and, using fallbacks, IE8. What I don't get is this: Safari just won't start loading <video> or <audio> content. Safari 6 won't load, and neither will iOS 5's Safari: My code calls .load() on the elements at the appropriate time (at least for Chrome), so what gives? Here is the video declaration: <video width="800" height="600" class="faces" id="facesVideo"> <source src="video/grid.mp4" type="video/mp4" /> <source src="video/grid.ogv" type="video/ogg" /> </video> The audio is declared dynamically, but has the same problem. Do I need to wait for some DOM event that Chrome doesn't need before calling .load()? What does it take to get Safari to start buffering until the elements can fire canplaythrough?

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• Monitoring file upload progress in Actionscript 3

  - by helloworlder

  I'm trying to track the progress of a file upload in AS3, and I'm getting strange behavior. When I select a file and upload it, the progress is instantaneously 100% even if the file is 10 or more megabytes, but it's not finished. The onComplete event is fired about 30 second to a few minutes later (depending on file size) when the file has really finished uploading. I've tested this locally and on the server, the behaviour is the same. Has anyone else experienced this? Very frustrating ... Otherwise, the file is uploading fine. The code is simple: myFileReference.addEventListener(ProgressEvent.PROGRESS, onUploadProgress); function onUploadProgress(e:ProgressEvent) { var pctDone:Number = (e.bytesLoaded / e.bytesTotal) * 100; trace(pctDone); }

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• how to exchange variables between extern iframe and site

  - by helle

  hey guys, for developement reasons (working with facebook-connect) i put the connect iframe in an iframe. on that way i am able to work on the connect-thing independent of my ip and don't have to develop on the live-server. the iframe holding the connect-button iframe is on my server, accessing the same db-server as the developer version (developer version is running on localhsot). as far as good ... BUT how can i let the parent site know, that the user has connected, so that i get his profile-picture displayd as reaction to this? how can i react in generally on an action/event/JS in an iframe? is there a way? can the iframe post data to the parent site? like a time-stamp and fb_userid? if the iframe stuff doesn't work ... i thougt of saving the ip to the fb_userid (to db) and check matches ... but i don't like this idea.

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• DOM Level 3 CustomEvents not bubbling on WebKit

  - by Edu Felipe

  I'm observing CustomEvents not bubbling, even though I set bubbling to true. The code below: var evt = document.createEvent("CustomEvent") evt.initCustomEvent("mycustomevent", true, false) var someh1 = document.getElementById("someh1") someh1.addEventListener("mycustomevent", function(){ alert("OMG!"); }) document.getElementsByTagName("body")[0].dispatchEvent(evt) With the HTML below: <html> <head></head> <body> <h1 id="someh1">content!</h1> </body> </html> Never shows the alert, demonstrating that the event is not bubbling down. Am I doing something wrong? Please note that if I do a getElementById("someh1") and run the dispatchEvent on it, the alert is displayed. Thanks!

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• Problem with JPopupMenu in a JTree

  - by Alex

  Hi guys I have this issue. In a custom JTree I implemented a JPopupMenu to display different JMenuItem according to the node selected using a MouseListener. The JPopupMenu is shown when the mouse right button is clicked. The problem is that if I don’t choose an Item from the PopupMenu but instead I select another node in the tree, either with right or left buttons, this event is never caught by the tree MouseListener Could anyone point me in the right direction to solve this? In case an example is available I’ll appreciate it. Thanks.

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• mySql Delete only removes the data not the entire entry

  - by Mick

  Hi all I have this line in my php code $insert = "DELETE FROM allocation_table WHERE job = '$jobnumber' " ; Mysql_query ($insert) ; The problem is it will remove all the values from the the one line in my table but not the entry itself. as you can see in the picture if I delete where job = 315 , it does not delete the line but does delete all the entries Yet in this code that preceeds it (a different table) . it works fine and the whole line is removed $insert = "DELETE FROM event WHERE jobnumber = '$jobnumber' " ; mysql_query ($insert) ;enter code here can anyone offer some advice please ??

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• UIWebView appears null when calling fro a method

  - by Alexidze

  I have a major problem when trying to access a UIWebView that was created during ViewDidLoad, the UIWebView appears null here is how i declare the property @property (nonatomic, retain) UIWebView *detailsView; the implementation @implementation iPadMainViewController @synthesize detailsView; - (void)viewDidLoad { [super viewDidLoad]; detailsView = [[UIWebView alloc] initWithFrame:CGRectMake(500, 0, 512, 768)]; [self.view addSubView:detailsView]; } When accessing from - (void)loadDetailedContent:(NSString *)s { NSLog(@"%@", detailsView); } I get NULL, is it a normal behavior or am i doing something wrong? here is the touchesBegan that is being called, from the views subclass that is being touched, -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { iPadMainViewController *mycontroller = [[iPadMainViewController alloc] init]; self.delegate = mycontroller; [self.delegate loadDetailedContent:NewsId]; }

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• The correct point in time to read an ASP .NET 1.1 control property in order to change page output

  - by RossMan

  Using ASP .NET 1.1 with CMS 2002 and C#. Trying to read the contents of a CMS HTML placeholder control into a string reader object so certain logic can be performed and the page output modified before it is displayed: StringReader srHtml = new StringReader(this.HtmlPlaceholderControl1.Html); The problem is that the Html property is empty during Page_Load, I've tried in a PreRender overload as well, but the property is still empty. The HtmlPlaceholder control does render html when the page load has completed. Which event should be handled in order to read the propery of the web control?

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• jquery: Toggle elements based on result from a function

  - by Svish

  I have a number of table rows that I would like to toggle the visibility of. They should be visible if a data item I have set on them earlier equals a selected value in a form. This is what I have so far: $('#category-selector').change(function(event) { var category_id = $(this).val(); if(!category_id) { $('tr', '#table tbody').show(); } else { $('tr', '#table tbody').toggle(); } }); Of course this just toggles them on and off. Thing is that I thought I was able to give toggle a function that would decide if each row should be on or off, but it turns out I can only give it a boolean condition which would be an all or nothing deal kind of... So, I have this function: function() { return $(this).data('category_id') == category_id; } How can I use that to go through all the rows and toggle them on or off? Or is there a better approach to this? What should I do?

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• Java serial comm notifyOnDataAvailable configure receive buffer size?

  - by fred basset

  Hi All, I have a Java serial driver that's using the notifyOnDataAvailable mode to enable async. receive notification. I see an occasional problem where the SerialPortEvent.DATA_AVAILABLE serial event is not called until a relatively large no. of characters have been received (e.g. 34). The problem is that the sender sent a 20 byte packet, so the Java receiver did not send an ACK until the sender did a retry of the 20 byte send. Is there any way in Java COMM to configure the size of the receive buffer?

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• How we can execute a javascript function and get a return value in our android application?

  - by JAC

  How we can execute a javascript function and get a return value in our android appplication ? We have a javascript file that stored in our sqlite db, We want to execute that script on a button press event, we need to pass parameters to the script and get return values, how we can implement this? sample script file stored in Db is, <html><head><title>ADV</title><script type="text/javascript"> function checkName(pname) if( pname == 'android') { return false; }else { return true; } } </script></head><body></Body></html>

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• Jquery ui autocomplete different source

  - by voidnull

  Hi i try to use jquery ui autocomplete. I have different autocomplete field in one page and i need to get data with different sources (different url) depend to wich autocomplete field is used. i know how can i get the typed data (request.term), but i cant find the way to get the selected field ID. $(".ac").autocomplete({ source: function(request, response) { id = '??? the actually used field #id ???'; $.ajax({ type: "POST", url: "/admin_/sql/autocomplete/"+id, data: "test=...", async: false, success: function(data) { } }); }, search: function() { // }, focus: function() { // return false; }, select: function(event, ui) { // return false; } });

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• embed multiple youtube videos to chromeless player cue

  - by Quaze

  So in the project ive been working on i use the youtube API to add a video to a chromeless player (got custom buttons, everything works no problems). It loads the youtube id which it gets from the database (Codeigniter, PHP). But what i would like to see is: instead of loading 1 video, id like to add all the videos i get from the database in the cue of that one player. So only one screen, first video retrieved from dbase gets played first, when its done second get loaded preferably also looped. Is there any way i can achieve this? My first guess would be to save the array with youtube id's somewhere and on state change (when the 'video stop'-event gets fired) load the next id from the array. Havent tried this yet because id prefer if the cue gets just gets filled on the init, so it doesnt have to load after a video has been ended. Is This possible?

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• WCF: How to find out when a session is ending?

  - by TomTom

  I have a WCF application that is using sessions. Is there any central event to get thrown when a session ends? How can I find out when a session is ending WITHOUT (!) calling a method (network disconnect, client crashing - so no "logout" method call)? The server is hosted as: [ServiceBehavior( InstanceContextMode = InstanceContextMode.PerSession, ConcurrencyMode = ConcurrencyMode.Reentrant, UseSynchronizationContext = false, IncludeExceptionDetailInFaults = true )] Basically because it is using a callback interface. Now, I basically need to decoubple the instance created from the backend store when the session terminates ;) Any ideas?

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• Get text when enter is pressed in a text box in wxPython

  - by Sam

  I have a (single line) TextCtrl. The user types data into this. When they press enter, the contents of the box need to be extracted so they can be processed. I can't figure out how to catch enter being pressed. According to the docs, with the style wx.TE_PROCESS_ENTER set on my TextCtrl, it should generate a wx.EVT_COMMAND_TEXT_ENTER event when enter is pressed in the box, which I could then catch. However, wx.EVT_COMMAND_TEXT_ENTER seems not to exist (I get "module has no attribute EVT_COMMAND_TEXT_ENTER), so I'm a bit stuck. Googling just gets a couple of hits of people complaining wx.EVT_COMMAND_TEXT_ENTER doesn't work, so I guess I need another way of doing it.

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• Handling download abort in PHP

  - by Aron Rotteveel

  Is it somehow possible to handle a download abort in PHP? In this specific case I am not speaking of a connection abort, but handling the event that triggers when the 'cancel' button in the browser download dialog button is clicked. Since this dialog already interprets the headers of the file that is to be download but does not actually start the download, it only seems logical there should be some way to catch this. Small (pseudo) code example to clear things up: // set some headers header('...'); // Question: what happens between the part where the headers are sent // and the actual data is being outputted to the client? IE: this is the part // where the download dialog should show up // Logical question that follows is: is there a way to detect a 'cancel'? $filename = '/some/file.txt'; $handle = fopen($filename, 'rb'); // output data to client while (!feof($handle)) { echo fread($handle, 8096); } fclose($handle);

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• How to get dataset to populate data into dbgrid in Delphi 6?

  - by Chris J

  I have created a DBGrid in Delphi 6 and tied it to a DataSource contained in a DataModule. The Dataset for that source in also located in the same module. In the OnShow event for the form, I activate the dataset and set a label equal to the rowcount for the dataset. This shows several hundred rows but nothing shows in the dbgrid. If I activate the dataset in the IDE, the grid populates with the expected data. Does anyone have any idea why this behaviour would change between the IDE and normal runtime? We are also using SDAC connection components. All 3rd party component choices are not mine to change. I can elaborate as necessary for clarification, but I mainly need troubleshooting ideas to start at.

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• How to close reconnect SocketIOClient on android?

  - by erginduran

  My problem is reconnect.I connect SocketIOClient.connect(..) in background service.I close service when internet connection is off.and I re-start service again connection on. How to close this reconnection?I don't want to reconnect SocketIOClient. Its my code: ConnectCallback mConnectCallback = new ConnectCallback() { @Override public void onConnectCompleted(Exception ex, SocketIOClient client) { if (ex != null) { ex.printStackTrace(); return; } client.setReconnectCallback(new ReconnectCallback() { @Override public void onReconnect() { // TODO Auto-generated method stub } }); client.setDisconnectCallback(new DisconnectCallback() { @Override public void onDisconnect(Exception arg0) { // TODO Auto-generated method stub } }); client.setErrorCallback(new ErrorCallback() { @Override public void onError(String arg0) { // TODO Auto-generated method stub } }); client.on("event", new EventCallback() { @Override public void onEvent(JSONArray jsonArray, Acknowledge acknowledge) { ///bla bla } }); ScreenChat.mClient = client; } };

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• Put specific tds from a table row into edit using jQuery (then update w/ ajax)

  - by bbqsauced

  I'm somewhat new to jQuery, so I could use some help here. This is my issue: I have a php script outputting a dynamic table. Each row has an "edit" button, plus some other fields. Only 3 of those need to be turned into an input box. The edit button should only put that specific row into "edit mode." I got as far as assigning each row a unique class by adding a number to the end of it. I have been able to use jQuery to change all of the rows into edit mode, but I need it to be specific to a row. An example row would have classes like name0, price0, and desc0. The next row would go on to classes name1, price1, and desc1 (for the fields that need changed). How can I reference these values and pass them to jQuery so it processes an event on just those elements?

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• Whats wrong with this my SELECt Query >?

  - by user559800

  Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click Dim SQLData As New System.Data.SqlClient.SqlConnection("Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\Database.mdf;Integrated Security=True;User Instance=True") Dim cmdSelect As New System.Data.SqlClient.SqlCommand("SELECT COUNT(*) FROM Table1 WHERE Name =" + TextBox1.Text + " And Last = '" + TextBox2.Text + "'", SQLData) SQLData.Open() If cmdSelect.ExecuteScalar > 0 Then Label1.Text = "Record Found ! " & TextBox1.Text & " " & TextBox2.Text Return End If Label1.Text = "Record Not Found ! " SQLData.Close() End Sub I write this code to find whether the record entered in textbox1 and textbox2 exists or not ..if record exist ..then in label1 the text would be RECORD FOUND else NO RECORD FOUND ERROR : **when i enter in textbox1 and textbox2 then on button click event it shows the error : Invalid column name ,,**

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• Changing background color of inputfield of editable coloumn in primefaces datatable on value change

  - by Shikha

  I have an editable coloumn in dataTable. The code is: <p:column id="articleDescription" headerText="Article Description" filterBy="#{article.description}" filterMatchMode="startsWith"> <p:inputText id="description" value="#{article.description}"style="border:none; box-shadow:none;" /> </p:column> I want to change the background color of the inputText - description on the event - valueChange. How can I change that ? Also, the default background color of it should be the same as of its parent row? Is it possible? How can it be done? Thanks, Shikha

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• Can events fired from an iframe be handled by elements in its parent?

  - by allyourcode

  Suppose I have a page located at www.example.com/foo, and it contains an iframe with src="http://www.example.com/bar". I want to be able to fire an event from /bar and have it be heard by /foo. Using the Prototype library, I've tried doing the following without success: Element.fire(parent, 'ns:frob'); When I do this, in ff 3.5, I get the following error: Node cannot be used in a document other than the one in which it was created" code: "4 Line 0 Not sure if that's related to my problem. Is there some security mechanism that's preventing scripts in /bar from kicking off events in /foo?

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