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• WCF via SSL connectivity problems

  - by Brett Widmeier

  Hello, I am hosting a WCF service from inside a Windows service using WAS. When I set the service to listen on 127.0.0.1, I have connectivity from my local machine as well as from my network. However, when I set it to listen on my outbound interface port 443, I can no longer even see the wsdl by connecting with a browser. Strangely, I can connect to the service by using telnet. The cert I am using was generated for my interface by a CA, and I have successfully used this exact cert with this service before. When checking the application log, I see that the service starts without error and is listening on the correct interface. From this information, it seems to me that the config file is in a valid state, but somehow misconfigured for what I want. I have, however, previously deployed this same setup on other sites using this config file. In case it is helpful, below is my config file. Any thoughts? <!--<system.diagnostics> <sources> <source name="System.ServiceModel" switchValue="Warning, ActivityTracing" propagateActivity="true"> <listeners> <add type="System.Diagnostics.DefaultTraceListener" name="Default"> <filter type="" /> </add> <add name="ServiceModelTraceListener"> <filter type="" /> </add> </listeners> </source> </sources> <sharedListeners> <add initializeData="app_tracelog.svclog" type="System.Diagnostics.XmlWriterTraceListener, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" name="ServiceModelTraceListener" traceOutputOptions="Timestamp"> <filter type="" /> </add> </sharedListeners> </system.diagnostics>--> <appSettings/> <connectionStrings/> <system.serviceModel> <!--<diagnostics> <messageLogging logEntireMessage="true" logMalformedMessages="true" logMessagesAtServiceLevel="true" logMessagesAtTransportLevel="true" maxMessagesToLog ="1000" maxSizeOfMessageToLog="524288"/> </diagnostics>--> <bindings> <basicHttpBinding> <binding name="basicHttps"> <security mode="Transport"> <transport clientCredentialType="None"/> <message /> </security> </binding> </basicHttpBinding> </bindings> <services> <service behaviorConfiguration="ServiceBehavior" name="<fully qualified name of service>"> <endpoint address="" binding="basicHttpBinding" name="OrdersSoap" contract="<fully qualified name of contract>" bindingNamespace="http://emr.orders.com/WebServices" bindingConfiguration="basicHttps" /> <endpoint binding="mexHttpsBinding" address="mex" contract="IMetadataExchange" /> <host> <baseAddresses> <add baseAddress="https://<external IP>/<name of service>>/" /> </baseAddresses> </host> </service> </services> <behaviors> <serviceBehaviors> <behavior name="ServiceBehavior"> <serviceMetadata httpsGetEnabled="False"/> <serviceDebug includeExceptionDetailInFaults="True" /> <dataContractSerializer maxItemsInObjectGraph="2147483646"/> </behavior> </serviceBehaviors> </behaviors> </system.serviceModel>

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• Lock-Free, Wait-Free and Wait-freedom algorithms for non-blocking multi-thread synchronization.

  - by GJ

  In multi thread programming we can find different terms for data transfer synchronization between two or more threads/tasks. When exactly we can say that some algorithem is: 1)Lock-Free 2)Wait-Free 3)Wait-Freedom I understand what means Lock-free but when we can say that some synchronization algorithm is Wait-Free or Wait-Freedom? I have made some code (ring buffer) for multi-thread synchronization and it use Lock-Free methods but: 1) Algorithm predicts maximum execution time of this routine. 2) Therad which call this routine at beginning set unique reference, what mean that is inside of this routine. 3) Other threads which are calling the same routine check this reference and if is set than count the CPU tick count (measure time) of first involved thread. If that time is to long interrupt the current work of involved thread and overrides him job. 4) Thread which not finished job because was interrupted from task scheduler (is reposed) at the end check the reference if not belongs to him repeat the job again. So this algorithm is not really Lock-free but there is no memory lock in use, and other involved threads can wait (or not) certain time before overide the job of reposed thread. Added RingBuffer.InsertLeft function: function TgjRingBuffer.InsertLeft(const link: pointer): integer; var AtStartReference: cardinal; CPUTimeStamp : int64; CurrentLeft : pointer; CurrentReference: cardinal; NewLeft : PReferencedPtr; Reference : cardinal; label TryAgain; begin Reference := GetThreadId + 1; //Reference.bit0 := 1 with rbRingBuffer^ do begin TryAgain: //Set Left.Reference with respect to all other cores :) CPUTimeStamp := GetCPUTimeStamp + LoopTicks; AtStartReference := Left.Reference OR 1; //Reference.bit0 := 1 repeat CurrentReference := Left.Reference; until (CurrentReference AND 1 = 0)or (GetCPUTimeStamp - CPUTimeStamp > 0); //No threads present in ring buffer or current thread timeout if ((CurrentReference AND 1 <> 0) and (AtStartReference <> CurrentReference)) or not CAS32(CurrentReference, Reference, Left.Reference) then goto TryAgain; //Calculate RingBuffer NewLeft address CurrentLeft := Left.Link; NewLeft := pointer(cardinal(CurrentLeft) - SizeOf(TReferencedPtr)); if cardinal(NewLeft) < cardinal(@Buffer) then NewLeft := EndBuffer; //Calcolate distance result := integer(Right.Link) - Integer(NewLeft); //Check buffer full if result = 0 then //Clear Reference if task still own reference if CAS32(Reference, 0, Left.Reference) then Exit else goto TryAgain; //Set NewLeft.Reference NewLeft^.Reference := Reference; SFence; //Try to set link and try to exchange NewLeft and clear Reference if task own reference if (Reference <> Left.Reference) or not CAS64(NewLeft^.Link, Reference, link, Reference, NewLeft^) or not CAS64(CurrentLeft, Reference, NewLeft, 0, Left) then goto TryAgain; //Calcolate result if result < 0 then result := Length - integer(cardinal(not Result) div SizeOf(TReferencedPtr)) else result := cardinal(result) div SizeOf(TReferencedPtr); end; //with end; { TgjRingBuffer.InsertLeft } RingBuffer unit you can find here: RingBuffer, CAS functions: FockFreePrimitives, and test program: RingBufferFlowTest Thanks in advance, GJ

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• How to Bind a selected Item in a Listbox to a ItemsControl and ItemTemplate in WPF and C#

  - by Scott

  All, LowDown: I am trying to create a Document Viewer in WPF. The layout is this: Left side is a full list box. On the right side is a Collection or an Items control. Inside the items control will be a collection of the "selected documents" in the list box. So A user can select multiple items in the list box and for each new item they select, they can add the item to the collection on the right. I want the collection to look like a image gallery that shows up in Google/Bing Image searches. Make sense? The problem I am having is I can't get the WPFPreviewer to bind correctly to the selected item in the list box under the itemscontrol. Side Note: The WPFPreviewer is something Micorosft puts out that allows us to preview documents. Other previewers can be built for all types of documents, but im going basic here until I get this working right. I have been successful in binding to the list box WITHOUT the items control here: <Window.Resources> <DataTemplate x:Key="listBoxTemplate"> <StackPanel Margin="3" > <DockPanel > <Image Source="{Binding IconURL}" Height="30"></Image> <TextBlock Text=" " /> <TextBlock x:Name="Title" Text="{Binding Title}" FontWeight="Bold" /> <TextBlock x:Name="URL" Visibility="Collapsed" Text="{Binding Url}"/> </DockPanel> </StackPanel> </DataTemplate> </Window.Resources><Grid Background="Cyan"> <ListBox HorizontalAlignment="Left" ItemTemplate="{StaticResource listBoxTemplate}" Width="200" AllowDrop="True" x:Name="lbDocuments" ItemsSource="{Binding Path=DocumentElements,ElementName=winDocument}" DragEnter="documentListBox_DragEnter" /> <l:WPFPreviewHandler Content="{Binding ElementName=lbDocuments, Path=SelectedItem.Url}"/> </Grid> Though, once I add in the ItemsControl, I can't get it to work anymore: <Window.Resources> <DataTemplate x:Key="listBoxTemplate"> <StackPanel Margin="3" > <DockPanel > <Image Source="{Binding IconURL}" Height="30"></Image> <TextBlock Text=" " /> <TextBlock x:Name="Title" Text="{Binding Title}" FontWeight="Bold" /> <TextBlock x:Name="URL" Visibility="Collapsed" Text="{Binding Url}"/> </DockPanel> </StackPanel> </DataTemplate> </Window.Resources> <Grid> <ListBox HorizontalAlignment="Left" ItemTemplate="{StaticResource listBoxTemplate}" Width="200" AllowDrop="True" x:Name="lbDocuments" ItemsSource="{Binding Path=DocumentElements,ElementName=winDocument}" DragEnter="documentListBox_DragEnter" /> <ItemsControl x:Name="DocumentViewer" ItemsSource="{Binding ElementName=lbDocuments, Path=SelectedItem.Url}" > <ItemsControl.ItemTemplate> <DataTemplate> <Grid Background="Cyan"> <l:WPFPreviewHandler Content="{Binding Url}"/> </Grid> </DataTemplate> </ItemsControl.ItemTemplate> </ItemsControl> </Grid> Can someone please help me out with trying to bind to the ItemsControl if I select one or even multiple items in the listbox.

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• Windows NT Service shutdown issues

  - by Jeremiah Gowdy

  I have developed middleware that provides RPC functionality to multiple client applications on multiple platforms within our organization. The middleware is written in C# and runs as a Windows NT Service. It handles things like file access to network shares, database access, etc. The middleware is hosted on two high end systems running Windows Server 2008 R2. When one of our server administrators goes to reboot the machine, primarily to do Windows Updates, there are serious problems with how the system behaves in regards to my NT Service. My service is designed to immediately stop listening for new connections, immediately start refusing new requests on existing connections, and otherwise shut down as rapidly as possible in the case of an OnStop or OnShutdown request from the SCM. Still, to maintain system integrity, operations that are currently in progress are allowed to continue for a reasonable time. Usually the server shuts down inside of 30 seconds (when the service is manually stopped for example). However, when the system is instructed to restart, my service immediately loses access to network drives and UNC paths, causing data integrity problems for any open files and partial writes to those locations. My service does list Workstation (and thus SMB Redirector) as a dependency, so I would think that my service would need to be stopped prior to Workstation/Redirector being stopped if Windows were honoring those dependencies. Basically, my application is forced to crash and burn, failing remote procedure calls and eventually being forced to terminate by the operating system after a timeout period has elapsed (seems to be on the order of 20-30 seconds). Unlike a Windows application, my Windows NT Service doesn't seem to have any power to stop a system shutdown in progress, delay the system shutdown, or even just the opportunity to save out any pending network share disk writes before being forcibly disconnected and shutdown. How is an NT Service developer supposed to have any kind of application integrity in this environment? Why is it that Forms Applications get all of the opportunity to finish their business prior to shutdown, while services seem to get no such benefits? I have tried: Calling SetProcessShutdownParameters via p/invoke to try to notify my application of the shutdown sooner to avoid Redirector shutting down before I do. Calling ServiceBase.RequestAdditionalTime with a value less than or equal to the two minute limit. Tweaking the WaitToKillServiceTimeout Everything I can think of to make my service shutdown faster. But in the end, I still get ~30 seconds of problematic time in which my service doesn't even seem to have been notified of an OnShutdown event yet, but requests are failing due to redirector no longer servicing my network share requests. How is this issue meant to be resolved? What can I do to delay or stop the shutdown, or at least be allowed to shut down my active tasks without Redirector services disappearing out from under me? I can understand what Microsoft is trying to do to prevent services from dragging their feet and showing shutdowns, but that seems like a great goal for Windows client operating systems, not for servers. I don't want my servers to shutdown fast, I want operational integrity and graceful shutdowns. Thanks in advance for any help you can provide. PS in regards to writing my own middleware, this is for a telephony application with sub-second "soft-realtime" response time requirements. It does make sense, and it's not a point I'm looking to debate. :)

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• Jquery calendar and tab sliding div clash...

  - by StealthRT

  Hey all, i am trying my best to figure out another way around this problem i seem to have encountered. On my website i have a jquery calendar and also a jquery div tab slider (this: http://www.queness.com/resources/html/tabmenu/jquery-tabbed-menu-queness.html). The problem comes into play with the DIV tag. The calender loads up inside a DIV with a id of 'calender'. The CSS for the tabs have the DIV hidden: CSS: .boxBody div {display:none;} .boxBody div.show {display:block;} .boxBody #category a {display:block;} And because of that, the calender never shows on the page. However, if i comment out that css code above, it shows up but does not cover each section as it should. In other words, everything is shown when it should be hidden until the tabs are clicked on to revel it. code: <script type="text/javascript"> $(document).ready(function() { $('#tabMenu > li').click(function(){ $('#tabMenu > li').removeClass('selected'); $(this).addClass('selected'); $('.boxBody div').slideUp('1500'); $('.boxBody div:eq(' + $('#tabMenu > li').index(this) + ')').slideDown('1500'); }).mouseover(function() { $(this).addClass('mouseover'); $(this).removeClass('mouseout'); }).mouseout(function() { $(this).addClass('mouseout'); $(this).removeClass('mouseover'); }); $('.boxBody #category li').mouseover(function() { $(this).css('backgroundColor','#888'); $(this).children().animate({paddingLeft:"20px"}, {queue:false, duration:300}); }).mouseout(function() { $(this).css('backgroundColor',''); $(this).children().animate({paddingLeft:"0"}, {queue:false, duration:300}); }); $('.boxBody li').click(function(){ window.location = $(this).find("a").attr("href"); }).mouseover(function() { $(this).css('backgroundColor','#888'); }).mouseout(function() { $(this).css('backgroundColor',''); }); }); </script> <div align="center"> <div class="Mainbox"> <ul id="tabMenu"> <div id="theLogo"><[img] src="img/theLogo.png" width="415" height="146" /></div> <li class="stats"><[img] src="img/Stats.png" width="70" height="52" id="tab1" /></li> <li class="cal"><[img] src="img/cal.png" width="70" height="52" id="tab2" /></li> <li class="loyalty"><[img] src="img/Loyalty.png" width="70" height="52" id="tab3" /></li> <li class="Employees"><[img] src="img/Employees.png" width="70" height="52" id="tab4" /></li> <li class="txtemail"><[img] src="img/TxtEmail.png" width="70" height="52" id="tab5" /></li> </ul> <div class="boxTop"></div> <div class="boxBody"> <div id="stats" class="show"> Just a test here.... </div> <div id="cal"> <div id='calendar'></div> </div> <div class="boxBottom"></div> </div> </div> How can i change the tab javascript code so that it does not have to hide the DIV's so that the calendar will work? I've tried to replace all div's with 'span' or 'p' but that does not seem to work at all. Any help would be great as i am stuck on this and can not go any further without it being solved! :) David

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• Need suggestions on how to extract data from .docx/.doc file then into mssql

  - by DarkPP

  I'm suppose to develop an automated application for my project, it will load past-year examination/exercises paper (word file), detect the sections accordingly, extract the questions and images in that section, and then store the questions and images into the database. (Preview of the question paper is at the bottom of this post) So I need some suggestions on how to extract data from a word file, then inserting them into a database. Currently I have a few methods to do so, however I have no idea how I could implement them when the file contains textboxes with background image. The question has to link with the image. Method One (Make use of ms office interop) Load the word file - Extract image, save into a folder - Extract text, save as .txt - Extract text from .txt then store in db Question: How i detect the section and question. How I link the image to the question. Extract text from word file (Working): private object missing = Type.Missing; private object sFilename = @"C:\temp\questionpaper.docx"; private object sFilename2 = @"C:\temp\temp.txt"; private object readOnly = true; object fileFormat = Word.WdSaveFormat.wdFormatText; private void button1_Click(object sender, EventArgs e) { Word.Application wWordApp = new Word.Application(); wWordApp.DisplayAlerts = Word.WdAlertLevel.wdAlertsNone; Word.Document dFile = wWordApp.Documents.Open(ref sFilename, ref missing, ref readOnly, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing); dFile.SaveAs(ref sFilename2, ref fileFormat, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing,ref missing, ref missing,ref missing,ref missing,ref missing,ref missing, ref missing,ref missing); dFile.Close(ref missing, ref missing, ref missing); } Extract image from word file (Doesn't work on image inside textbox): private Word.Application wWordApp; private int m_i; private object missing = Type.Missing; private object filename = @"C:\temp\questionpaper.docx"; private object readOnly = true; private void CopyFromClipbordInlineShape(String imageIndex) { Word.InlineShape inlineShape = wWordApp.ActiveDocument.InlineShapes[m_i]; inlineShape.Select(); wWordApp.Selection.Copy(); Computer computer = new Computer(); if (computer.Clipboard.GetDataObject() != null) { System.Windows.Forms.IDataObject data = computer.Clipboard.GetDataObject(); if (data.GetDataPresent(System.Windows.Forms.DataFormats.Bitmap)) { Image image = (Image)data.GetData(System.Windows.Forms.DataFormats.Bitmap, true); image.Save("C:\\temp\\DoCremoveImage" + imageIndex + ".png", System.Drawing.Imaging.ImageFormat.Png); } } } private void button1_Click(object sender, EventArgs e) { wWordApp = new Word.Application(); wWordApp.Documents.Open(ref filename, ref missing, ref readOnly, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing); try { for (int i = 1; i <= wWordApp.ActiveDocument.InlineShapes.Count; i++) { m_i = i; CopyFromClipbordInlineShape(Convert.ToString(i)); } } finally { object save = false; wWordApp.Quit(ref save, ref missing, ref missing); wWordApp = null; } } Method Two Unzip the word file (.docx) - Copy the media(image) folder, store somewhere - Parse the XML file - Store the text in db Any suggestion/help would be greatly appreciated :D Preview of the word file: (backup link: http://i.stack.imgur.com/YF1Ap.png)

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• Slow Jquery Animation

  - by Pyronaut

  I have this webpage : http://miloarc.pyrogenicmedia.com/ Which atm is nothing special. It has a few effects but none that break the bank. If you mouse over a tile, it should change it's opacity to give it a fade effect. This is done through the Jquery Animation, not through CSS (I do this so it can fade, instead of being a straight change). Everything looks nice when the page loads, and the fades look perfect. Infact if you drag your mouse all over the place, if gives you a "trail" almost like a snake. Anyway, My next problem is that you will see there is a box in the top left, which is going to tell you information about the tile you are hovering over. This seems to work fine. When you mouse over that information box, it switches it's position (So that you can reach the tiles that were previously hidden underneath it). From my understanding, this is all working fine, and to the letter. However, After one move of the info box (One hover). Viewing the page in Firefox turns slugish. As in, after a successful move of the info box, the fade effects become very stuttered, and it doesn't pick up events as fast meaning you can't draw a "trail" on the screen. Chrome doesn't have this issue. It seems to work fine no matter what. Safari also seems ok. Although I do notice if I move my mouse really fast, it does jump a bit but not as much as firefox. Internet explorer doesn't work at all. Seems to crash the browser... And there is an error with the rounded corner plugin im using (Not sure why...). All in all, I think whatever I'm doing inside my code must be heavily sluggish. But I don't know where it is happening. Here is the full code, but I would advise go to the link to view everything. <script type="text/javascript"> $(document).ready(function() { var WindowWidth = $(window).width(); var WindowMod = WindowWidth % 20; var WindowWidth = WindowWidth - WindowMod; var BoxDimension = WindowWidth / 20; var BoxDimensionFixed = BoxDimension - 12; var dimensions = BoxDimensionFixed + 'px'; $('.gamebutton').each(function(i) { $(this).css('width', dimensions); $(this).css('height', dimensions); }); var OuterDivHeight = BoxDimension * 10; var TopMargin = ($(window).height() - OuterDivHeight) / 2; var OuterDivWidth = BoxDimension * 20; var LeftMargin = ($(window).width() - OuterDivWidth) / 2; $('#gamePort').css('margin-top', TopMargin).css('margin-left', LeftMargin).css('margin-right', LeftMargin); $('.gamebutton img').each(function(i) { $(this).hover( function () { $(this).animate({'opacity': 0.65}); }, function () { $(this).animate({'opacity': 1}); } ); }); $('.rounded').corners(); $('.gamebutton').each(function(i) { $(this).hover(function() { $('.gameTitlePopup').html($(this).attr('title')); FadeActive(); }); }); function FadeActive() { $('.activeInfo').fadeIn('slow'); } $('#gameInfoLeft').hover(function() { $(this).removeClass('activeInfo'); $(this).fadeOut('slow', function() { $('#gameInfoRight').addClass('activeInfo'); FadeActive(); }); }); $('#gameInfoRight').hover(function() { $(this).removeClass('activeInfo'); $(this).fadeOut('slow', function() { $('#gameInfoLeft').addClass('activeInfo'); FadeActive(); }); }); }); </script> Thanks for any help :).

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• Domain Validation in a CQRS architecture

  - by Jupaol

  Basically I want to know if there is a better way to validate my domain entities. This is how I am planning to do it but I would like your opinion The first approach I considered was: class Customer : EntityBase<Customer> { public void ChangeEmail(string email) { if(string.IsNullOrWhitespace(email)) throw new DomainException(“...”); if(!email.IsEmail()) throw new DomainException(); if(email.Contains(“@mailinator.com”)) throw new DomainException(); } } I actually do not like this validation because even when I am encapsulating the validation logic in the correct entity, this is violating the Open/Close principle (Open for extension but Close for modification) and I have found that violating this principle, code maintenance becomes a real pain when the application grows up in complexity. Why? Because domain rules change more often than we would like to admit, and if the rules are hidden and embedded in an entity like this, they are hard to test, hard to read, hard to maintain but the real reason why I do not like this approach is: if the validation rules change, I have to come and edit my domain entity. This has been a really simple example but in RL the validation could be more complex So following the philosophy of Udi Dahan, making roles explicit, and the recommendation from Eric Evans in the blue book, the next try was to implement the specification pattern, something like this class EmailDomainIsAllowedSpecification : IDomainSpecification<Customer> { private INotAllowedEmailDomainsResolver invalidEmailDomainsResolver; public bool IsSatisfiedBy(Customer customer) { return !this.invalidEmailDomainsResolver.GetInvalidEmailDomains().Contains(customer.Email); } } But then I realize that in order to follow this approach I had to mutate my entities first in order to pass the value being valdiated, in this case the email, but mutating them would cause my domain events being fired which I wouldn’t like to happen until the new email is valid So after considering these approaches, I came out with this one, since I am going to implement a CQRS architecture: class EmailDomainIsAllowedValidator : IDomainInvariantValidator<Customer, ChangeEmailCommand> { public void IsValid(Customer entity, ChangeEmailCommand command) { if(!command.Email.HasValidDomain()) throw new DomainException(“...”); } } Well that’s the main idea, the entity is passed to the validator in case we need some value from the entity to perform the validation, the command contains the data coming from the user and since the validators are considered injectable objects they could have external dependencies injected if the validation requires it. Now the dilemma, I am happy with a design like this because my validation is encapsulated in individual objects which brings many advantages: easy unit test, easy to maintain, domain invariants are explicitly expressed using the Ubiquitous Language, easy to extend, validation logic is centralized and validators can be used together to enforce complex domain rules. And even when I know I am placing the validation of my entities outside of them (You could argue a code smell - Anemic Domain) but I think the trade-off is acceptable But there is one thing that I have not figured out how to implement it in a clean way. How should I use this components... Since they will be injected, they won’t fit naturally inside my domain entities, so basically I see two options: Pass the validators to each method of my entity Validate my objects externally (from the command handler) I am not happy with the option 1 so I would explain how I would do it with the option 2 class ChangeEmailCommandHandler : ICommandHandler<ChangeEmailCommand> { public void Execute(ChangeEmailCommand command) { private IEnumerable<IDomainInvariantValidator> validators; // here I would get the validators required for this command injected, and in here I would validate them, something like this using (var t = this.unitOfWork.BeginTransaction()) { var customer = this.unitOfWork.Get<Customer>(command.CustomerId); this.validators.ForEach(x =. x.IsValid(customer, command)); // here I know the command is valid // the call to ChangeEmail will fire domain events as needed customer.ChangeEmail(command.Email); t.Commit(); } } } Well this is it. Can you give me your thoughts about this or share your experiences with Domain entities validation EDIT I think it is not clear from my question, but the real problem is: Hiding the domain rules has serious implications in the future maintainability of the application, and also domain rules change often during the life-cycle of the app. Hence implementing them with this in mind would let us extend them easily. Now imagine in the future a rules engine is implemented, if the rules are encapsulated outside of the domain entities, this change would be easier to implement

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• How do I convert Data::Dumper output back into a Perl data structure?

  - by newbee_me

  Hi all! I was wondering if you could shed some lights regarding the code I've been doing for a couple of days. I've been trying to convert a Perl-parsed hash back to XML using the XMLout() and XMLin() method and it has been quite successful with this format. #!/usr/bin/perl -w use strict; # use module use IO::File; use XML::Simple; use XML::Dumper; use Data::Dumper; my $dump = new XML::Dumper; my ( $data, $VAR1 ); Topology:$VAR1 = { 'device' => { 'FOC1047Z2SZ' => { 'ChassisID' => '2009-09', 'Error' => undef, 'Group' => { 'ID' => 'A1', 'Type' => 'Base' }, 'Model' => 'CATALYST', 'Name' => 'CISCO-SW1', 'Neighbor' => {}, 'ProbedIP' => 'TEST', 'isDerived' => 0 } }, 'issues' => [ 'TEST' ] }; # create object my $xml = new XML::Simple (NoAttr=>1, RootName=>'data', SuppressEmpty => 'true'); # convert Perl array ref into XML document $data = $xml->XMLout($VAR1); #reads an XML file my $X_out = $xml->XMLin($data); # access XML data print Dumper($data); print "STATUS: $X_out->{issues}\n"; print "CHASSIS ID: $X_out->{device}{ChassisID}\n"; print "GROUP ID: $X_out->{device}{Group}{ID}\n"; print "DEVICE NAME: $X_out->{device}{Name}\n"; print "DEVICE NAME: $X_out->{device}{name}\n"; print "ERROR: $X_out->{device}{error}\n"; I can access all the element in the XML with no problem. But when I try to create a file that will house the parsed hash, problem arises because I can't seem to access all the XML elements. I guess, I wasn't able to unparse the file with the following code. #!/usr/bin/perl -w use strict; #!/usr/bin/perl # use module use IO::File; use XML::Simple; use XML::Dumper; use Data::Dumper; my $dump = new XML::Dumper; my ( $data, $VAR1, $line_Holder ); #this is the file that contains the parsed hash my $saveOut = "C:/parsed_hash.txt"; my $result_Holder = IO::File->new($saveOut, 'r'); while ($line_Holder = $result_Holder->getline){ print $line_Holder; } # create object my $xml = new XML::Simple (NoAttr=>1, RootName=>'data', SuppressEmpty => 'true'); # convert Perl array ref into XML document $data = $xml->XMLout($line_Holder); #reads an XML file my $X_out = $xml->XMLin($data); # access XML data print Dumper($data); print "STATUS: $X_out->{issues}\n"; print "CHASSIS ID: $X_out->{device}{ChassisID}\n"; print "GROUP ID: $X_out->{device}{Group}{ID}\n"; print "DEVICE NAME: $X_out->{device}{Name}\n"; print "DEVICE NAME: $X_out->{device}{name}\n"; print "ERROR: $X_out->{device}{error}\n"; Do you have any idea how I could access the $VAR1 inside the text file? Regards, newbee_me

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• DoubleBuffering in Java

  - by DDP

  Hello there, I'm having some trouble implementing DoubleBuffer into my program. Before you faint from the wall of text, you should know that a lot of it is there just in case you need to know. The actual place where I think I'm having problems is in one method. I've recently looked up a tutorial on the gpwiki about double buffering, and decided to try and implement the code they had into the code I have that I'm trying to implement doublebuffer in. I get the following error: "java.lang.IllegalStateException: Component must have a valid peer". I don't know if it makes any difference if you know it or not, but the following is the code with the main method. This is just a Frame that displays the ChronosDisplay class inside it. I omitted irrelevant code with "..." public class CDM extends JFrame { public CDM(String str) { super("CD:M - "+str); try { ... ChronosDisplay theGame = new ChronosDisplay(str); ((Component)theGame).setFocusable(true); add(theGame); } catch(Exception e) { System.out.println("CDM ERROR: " +e); } } public static void main( String args[] ) { CDM run = new CDM("DP_Mini"); } } Here is the code where I think the problem resides (I think the problem is in the paint() method). This class is displayed in the CDM class public class ChronosDisplay extends Canvas implements Runnable { String mapName; public ChronosDisplay (String str) { mapName = str; new Thread(this).start(); setVisible(true); createBufferStrategy(2); } public void paint( Graphics window ) { BufferStrategy b = getBufferStrategy(); Graphics g = null; window.setColor(Color.white); try { g = b.getDrawGraphics(); paintMap(g); paintUnits(g); paintBullets(g); } finally { g.dispose(); } b.show(); Toolkit.getDefaultToolkit().sync(); } public void paintMap( Graphics window ) { TowerMap m = new TowerMap(); try { m = new TowerMap(mapName); for(int x=0; x<m.getRows()*50; x+=50) { for(int y = 0; y<m.getCols()*50; y+=50) { int tileType = m.getLocation(x/50,y/50); Image img; if(tileType == 0) { Tile0 t = new Tile0(x,y); t.draw(window); } ...// More similar if statements for other integers } catch(Exception e) ... } ...// Additional methods not shown here public void run() { try { while(true) { Thread.currentThread().sleep(20); repaint(); } } catch(Exception e) ... } } If you're curious (I doubt it matters), the draw() method in the Tile0 class is: public void draw( Graphics window ) { window.drawImage(img,getX(),getY(),50,50,null); } Any pointers, tips, or solutions are greatly appreciated. Thanks for your time! :D

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• WCF DataContractSerializer Behavior

  - by sbanwart

  I'm seeing some unusual behavior when using the DataContractSerializer. I have defined a message contract like so: namespace MyNamespace.DataContracts { [MessageContract(WrapperName = "order", WrapperNamespace = @"http://example.com/v1/order")] public class MyOrder { [MessageBodyMember(Namespace = @"http://http://example.com/v1/order", Order = 1)] public MyStore store; [MessageBodyMember(Namespace = @"http://http://example.com/v1/order", Order = 2)] public MyOrderHeader orderHeader; [MessageBodyMember(Namespace = @"http://example.com/v1/order", Order = 3)] public List<MyPayment> payments; [MessageBodyMember(Namespace = @"http://example.com/v1/order", Order = 4)] public List<MyShipment> shipments; } . . I'm sending it an XML message that looks like this: <?xml version="1.0" encoding="utf-8"?> <order xmlns="http://example.com/v1/order> <store> ... </store> <orderHeader> ... </orderHeader> <payments> <payment> ... </payment> </payments> <shipments> <shipment> ... </shipment> </shipments> </order> My service deserializes this XML as expected. Inside my service, I'm using the DataContractSerializer to create an XML string and that's where things get weird. I'm using the serializer like this: DataContractSerializer serializer = new DataContractSerializer(typeof(MyOrder)); using (MemoryStream ms = new MemoryStream()) { serializer.WriteObject(ms, order); ms.Position = 0; StreamReader sr = new StreamReader(ms); string outputMessage = sr.ReadToEnd(); } Once this finishes, the outputMessage contains the following XML: <?xml version="1.0" encoding="utf-8"?> <MyOrder xmlns="http://example.com/v1/order" xmlns:i="http://www.w3.org/2001/XMLSchema-instance"> <order> <store> ... </store> <orderHeader> ... </orderHeader> <payments> <payment> ... </payment> </payments> <shipments> <shipment> ... </shipment> </shipments> </order> </MyOrder> Needless to say, anything expecting to receive the original XML message will fail to parse this. So I guess I have two questions: Why is the DataContractSerializer adding the extra outer node to my XML output? Is there a way to stop it from doing this? Thanks.

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• How can I read this IIS error log?

  - by Victor Rodrigues

  I'm using Debug Diagnostic Tool, trying to understand why around 5% of the requests that are sent to my webservice just crash, without necessarily throw any error inside my application. One of the errors this tool took is below. Can anyone here understand exactly what could be happening? Thanks! [6/17/2010 5:32:58 PM] First chance exception - 0xe0434f4d caused by thread with system id 1736 [6/17/2010 5:32:58 PM] Stack Trace ChildEBP RetAddr Args to Child WARNING: Stack unwind information not available. Following frames may be wrong. 1c5bec58 79ef2bbc e0434f4d 00000001 00000001 kernel32!RaiseException+0x3c 1c5becb8 79fccf80 0a6d4998 00000000 00000000 mscorwks!GetMetaDataInternalInterface+0x84a9 1c5bed7c 656cab0e 0a6d4788 1c5bed98 65221345 mscorwks!StrongNameErrorInfo+0x103dc 1c5bed88 65221345 0a6cefb0 1c5bedf8 1c5bee08 System_Data_ni+0x57ab0e 1c5bee0c 79e7e1f3 1c147158 1c147158 0a6d0710 System_Data_ni+0xd1345 1c5bee24 79f7c770 0a6d0710 1c147158 026f25a8 mscorwks!DllUnregisterServerInternal+0x21d7 1c5beee8 79e71b4c 0a6cd9b8 0a6cd994 026f409c mscorwks!CorExitProcess+0x28f9a 1c5bef00 79e821b9 1c5befd8 00000002 1c5befa0 mscorwks+0x1b4c 1c5bef80 79e96531 1c5befd8 00000002 1c5befa0 mscorwks!DllUnregisterServerInternal+0x619d 1c5bf0c8 79e96564 1c531688 1c5bf228 1c5bf120 mscorwks!CoUninitializeEE+0x2ead 1c5bf0e4 79e96582 1c531688 1c5bf228 1c5bf120 mscorwks!CoUninitializeEE+0x2ee0 1c5bf0fc 79f87a83 1c5bf120 1c5bf2e0 79fa6a6b mscorwks!CoUninitializeEE+0x2efe 1c5bf2ec 79f87be2 00629d50 0a6cdae8 0a6d0e04 mscorwks!CorExitProcess+0x342ad 1c5bf3ac 792d5348 00629d90 00000086 1c5bf3c8 mscorwks!CorExitProcess+0x3440c 1c5bf3fc 792d50f6 00629d90 00000086 066a1ae0 mscorlib_ni+0x215348 1c5bf434 792d4fde 00000000 00000000 0a6cd944 mscorlib_ni+0x2150f6 1c5bf488 65e1098e 0a6cd944 00000000 00000000 mscorlib_ni+0x214fde 1c5bf4cc 65e10665 66082f99 0a6ca144 00000000 System_Web_Services_ni+0x13098e 1c5bf4fc 65e10ff7 026c1054 0a6ca168 0a6ace9c System_Web_Services_ni+0x130665 1c5bf510 6dde7666 1c5bf54c 660adb16 6ddd2c34 System_Web_Services_ni+0x130ff7 1c5bf518 660adb16 6ddd2c34 0a6ace8c 0a6c883c System_Web_Extensions_ni+0x1c7666 1c5bf54c 6608132c 1c5bf578 0a6c883c 00000000 System_Web_ni+0x18db16 1c5bf588 6608c5c3 1c5bf5b0 0a6abecc 0a6c8b4c System_Web_ni+0x16132c 1c5bf5dc 660808ac 0a6c8218 0a6abecc 026c0d48 System_Web_ni+0x16c5c3 1c5bf5f0 66083e1c 0a6c883c 026c1054 0a6c883c System_Web_ni+0x1608ac 1c5bf62c 66083ac3 026bc67c 0a6c8400 1c5bf6b0 System_Web_ni+0x163e1c 1c5bf63c 66082c5c 8984fdc8 79e7a6b8 1c5bf858 System_Web_ni+0x163ac3 1c5bf6b0 79f9811e 00000002 01b93b00 026cf6e4 System_Web_ni+0x162c5c 1c5bf768 79f9822b 0017a0d0 1c5bf970 1c5bf9e8 mscorwks!CorExitProcess+0x44948 1c5bf7c4 79f98691 0017a0d0 1c5bf970 1c5bf9e8 mscorwks!CorExitProcess+0x44a55 1c5bf9d0 6a2aa19b 00000001 01b93b00 00000000 mscorwks!CorExitProcess+0x44ebb 1c5bf9f0 6a2aa19b 023ad3f0 01b93b00 00000002 webengine!BufferPoolReleaseBuffer+0x1bb 1c5bfa28 79e72032 79e821f6 e5934469 0017a0d0 webengine!BufferPoolReleaseBuffer+0x1bb 00000000 00000000 00000000 00000000 00000000 mscorwks+0x2032 [6/17/2010 5:33:00 PM] First chance exception - 0xe0434f4d caused by thread with system id 3252 [6/17/2010 5:33:00 PM] Stack Trace ChildEBP RetAddr Args to Child WARNING: Stack unwind information not available. Following frames may be wrong. 01d0ecd8 79ef2bbc e0434f4d 00000001 00000001 kernel32!RaiseException+0x3c 01d0ed38 79fccf80 02748edc 00000000 00000000 mscorwks!GetMetaDataInternalInterface+0x84a9 01d0edfc 656cab0e 02748ccc 01d0ee18 65221345 mscorwks!StrongNameErrorInfo+0x103dc 01d0ee08 65221345 027434d0 01d0ee78 01d0ee88 System_Data_ni+0x57ab0e 01d0ee8c 79e7e1f3 1c147158 1c147158 02744c30 System_Data_ni+0xd1345 01d0eea4 79f7c770 02744c30 1c147158 026f25a8 mscorwks!DllUnregisterServerInternal+0x21d7 01d0ef68 79e71b4c 02741ed8 02741eb4 026f409c mscorwks!CorExitProcess+0x28f9a 01d0ef80 79e821b9 01d0f058 00000002 01d0f020 mscorwks+0x1b4c 01d0f000 79e96531 01d0f058 00000002 01d0f020 mscorwks!DllUnregisterServerInternal+0x619d 01d0f148 79e96564 1c531688 01d0f2a8 01d0f1a0 mscorwks!CoUninitializeEE+0x2ead 01d0f164 79e96582 1c531688 01d0f2a8 01d0f1a0 mscorwks!CoUninitializeEE+0x2ee0 01d0f17c 79f87a83 01d0f1a0 01d0f360 79fa6a6b mscorwks!CoUninitializeEE+0x2efe 01d0f36c 79f87be2 00629d50 02742008 02745324 mscorwks!CorExitProcess+0x342ad 01d0f42c 792d5348 00629d90 00000086 01d0f448 mscorwks!CorExitProcess+0x3440c 01d0f47c 792d50f6 00629d90 00000086 066a1ae0 mscorlib_ni+0x215348 01d0f4b4 792d4fde 00000000 00000000 02741e64 mscorlib_ni+0x2150f6 01d0f508 65e1098e 02741e64 00000000 00000000 mscorlib_ni+0x214fde 01d0f54c 65e10665 66082f99 0273e664 00000000 System_Web_Services_ni+0x13098e 01d0f57c 65e10ff7 026c1054 0273e688 0a6ace9c System_Web_Services_ni+0x130665 01d0f590 6dde7666 01d0f5cc 660adb16 6ddd2c34 System_Web_Services_ni+0x130ff7 01d0f598 660adb16 6ddd2c34 0a6ace8c 0272cce4 System_Web_Extensions_ni+0x1c7666 01d0f5cc 6608132c 01d0f5f8 0272cce4 00000000 System_Web_ni+0x18db16 01d0f608 6608c5c3 01d0f630 0a6abecc 0272cff4 System_Web_ni+0x16132c 01d0f65c 660808ac 0272c6c0 0a6abecc 026c0d48 System_Web_ni+0x16c5c3 01d0f670 66083e1c 0272cce4 026c1054 0272cce4 System_Web_ni+0x1608ac 01d0f6ac 66083ac3 026bc67c 0272c8a8 01d0f730 System_Web_ni+0x163e1c 01d0f6bc 66082c5c 8984fdc8 79e7a6b8 01d0f8d8 System_Web_ni+0x163ac3 01d0f730 79f9811e 00000002 01b93b00 026cf6e4 System_Web_ni+0x162c5c 01d0f7e8 79f9822b 000dcea8 01d0f9f0 01d0fa68 mscorwks!CorExitProcess+0x44948 01d0f844 79f98691 000dcea8 01d0f9f0 01d0fa68 mscorwks!CorExitProcess+0x44a55 01d0fa50 6a2aa19b 00000001 01b93b00 00000000 mscorwks!CorExitProcess+0x44ebb 01d0fa70 6a2aa19b 023ad3f0 01b93b00 00000002 webengine!BufferPoolReleaseBuffer+0x1bb 01d0fac8 79e79cba 79e79ccd 0000000d 00000000 webengine!BufferPoolReleaseBuffer+0x1bb 01d0facc 79e79ccd 0000000d 00000000 79ec3f4b mscorwks+0x9cba 01d0fad8 79ec3f4b 79e7c82c 79ec3f53 f818458d mscorwks+0x9ccd 00000000 00000000 00000000 00000000 00000000 mscorwks!CreateAssemblyNameObject+0x22f40 [6/17/2010 5:33:37 PM] Thread exited. Exiting thread system id - 2144. Exit code - 0x00000000

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• css, unordered list not displaying icon in right place...

  - by Ronedog

  I'm really frustrated with this one. A few weeks ago I got it working in both firefox and ie just fine. Went back today to do some testing and found a problem with the display in firefox and I've been searching the code but can't find anything. I could use a few tips from anyone willing, I'm sure I'm looking at the wrong things. I upgraded my firefox version but I imagine my code is broke, not firefox. I'm assuming the problem is somewhere in my css file, but I'm not sure. Here's what I've confirmed so far. There don't seem to be conflicts in other css files with < ul 's or < li 's that may be overriding settings. The other confirmation is that This works fine in Internet Explorer...therefore I must be an idiot, because its usually been the other way around (working in FF, but failing in IE). Here's How it looks in IE (Notice the position of the folder icon right next to the text): Here's how it looks in FF (Notice the folder icon is not being pushed down with its corresponding text). Here's the Unordered List: <ul id="nav"> <li><a>Utah</a></li> <ul> <li><a>ParkCity</a> <ul> <li><a>Com1</a></li> <ul> <li class="folder_closed"><a>Timber</a></li> <div>SQUARE CONTAINER IS INSIDE THIS DIV</div> </ul> </ul> </ul> </ul> Here's the CSS that is used for the whole menu: /* MENU NAVIGATION (<UL><LI> LISTS ****************************************/ ul#nav{ /* This handles the main root <ul> */ margin-left:0; margin-right:0; padding-left:0px; text-indent:15px; } ul#nav div{ overflow: hidden; } #nav li>a:hover { cursor: pointer; } #nav li > ul{ /* This will hide any element with an id of "nav" and an "li" that has a direct child that is a "ul" */ display:none; margin-left:0px; margin-right:0px; padding-left:15px; padding-right:0px; text-indent:15px; } #nav li { list-style-type:none; list-style-image: none; } #nav > li{ vertical-align: top; left:0px; text-align:left; clear: both; margin:0px; margin-right:0px; padding-right:0px; } .menu_parent{ background-image: url(../images/maximize.png); background-repeat: no-repeat; background-position: 0px 1px; position:relative; } .menu_parent_minimized{ background-image: url(../images/minimize.png); background-repeat: no-repeat; background-position: 0px 1px; position:relative; } .folder_closed{ position:relative; background-image: url(../images/folder_closed12x14.png); background-repeat: no-repeat; background-position: 0px -2px; } .folder_open{ position:relative; background-image: url(../images/folder_open12x14.png); background-repeat: no-repeat; background-position: 0px -2px; } </ul>

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• Themes outside application.

  - by Marek

  Hi all I read http://forum.kohanaframework.org/comments.php?DiscussionID=5744&page=1#Item_0 and I want to use similar solution, but with db. In my site controller after(): $theme = $page->get_theme_name(); //Orange Kohana::set_module_path('themes', Kohana::get_module_path('themes').'/'.$theme); $this->template = View::factory('layout') I checked with firebug: fire::log(Kohana::get_module_path('themes')); // D:\tools\xampp\htdocs\kohana\themes/Orange I am sure that path exists. I have directly in 'Orange' folder 'views' folder with layout.php file. But I am getting: The requested view layout could not be found Extended Kohana_Core is just: public static function get_module_path($module_key) { return self::$_modules[$module_key]; } public static function set_module_path($module_key, $path) { self::$_modules[$module_key] = $path; } Could anybody help me with solving that issue? Maybe it is a .htaccess problem: # Turn on URL rewriting RewriteEngine On # Put your installation directory here: # If your URL is www.example.com/kohana/, use /kohana/ # If your URL is www.example.com/, use / RewriteBase /kohana/ # Protect application and system files from being viewed RewriteCond $1 ^(application|system|modules) # Rewrite to index.php/access_denied/URL RewriteRule ^(.*)$ / [PT,L] RewriteRule ^(media) - [PT,L] RewriteRule ^(themes) - [PT,L] # Allow these directories and files to be displayed directly: # - index.php (DO NOT FORGET THIS!) # - robots.txt # - favicon.ico # - Any file inside of the images/, js/, or css/ directories RewriteCond $1 ^(index\.php|robots\.txt|favicon\.ico|static) # No rewriting RewriteRule ^(.*)$ - [PT,L] # Rewrite all other URLs to index.php/URL RewriteRule ^(.*)$ index.php/$1 [PT,L] Could somebody help? What I am doing wrong? Regards [EDIT] My controller code: class Controller_Site extends Controller_Fly { public static $meta_names = array('keywords', 'descriptions', 'author'); public function action_main() { $this->m('page')->get_main_page(); } public function action_page($page_title) { $this->m('page')->get_by_link($page_title); } public function after() { $page = $this->m('page'); $metas = ''; foreach(self::$meta_names as $meta) { if (! empty($page->$meta)) { $metas .= html::meta($page->$meta, $meta).PHP_EOL; } } $theme = $page->get_theme_name(); Kohana::set_module_path('themes', Kohana::get_module_path('themes').'/'.$theme); $menus = $page->get_menus(); $this->template = View::factory('layout') ->set('theme', $theme) ->set('metas', $metas) ->set('menus', $menus['content']) ->set('sections', $page->get_sections()) ->set_global('page', $page); if ($page->header_on) { $settings = $this->m('setting'); $this->template->header = View::factory('/header') ->set('title', $settings->title) ->set('subtitle', $settings->subtitle) ->set('menus', $menus['header']); } if ($page->sidebar_on) { $this->template->sidebar = View::factory('sidebar', array('menus' => $menus['sidebar'])); } if ($page->footer_on) { $this->template->footer = View::factory('footer'); } parent::after(); } } and parent controller: abstract class Controller_Fly extends Controller_Template { protected function m($model_name, $id = NULL) { if (! isset($this->$model_name)) { $this->$model_name = ORM::factory($model_name, $id); } return $this->$model_name; } protected function mf($model_name, $id = NULL) { return ORM::factory($model_name, $id); } }

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• Cannot Logout of Facebook with Facebook C# SDK

  - by Ryan Smyth

  I think I've read just about everything out there on the topic of logging out of Facebook inside of a Desktop application. Nothing so far works. Specifically, I would like to log the user out so that they can switch identities, e.g. People sharing a computer at home could then use the software with their own Facebook accounts, but with no chance to switch accounts, it's quite messy. (Have not yet tested switching Windows users accounts as that is simply far too much to ask of the end user and should not be necessary.) Now, I should say that I have set the application to use these permissions: string[] permissions = new string[] { "user_photos", "publish_stream", "offline_access" }; So, "offline_access" is included there. I do not know if this does/should affect logging out or not. Again, my purpose for logging out is merely to switch users. (If there's a better approach, please let me know.) The purported solutions seem to be: Use the JavaScript SDK (FB.logout()) Use "m.facebook.com" instead Create your own URL (and possibly use m.facebook.com) Create your own URL and use the session variable (in ASP.NET) The first is kind of silly. Why resort to JavaScript when you're using C#? It's kind of a step backwards and has a lot of additional overhead in a desktop application. (I have not tried this as it's simply disgustingly messy to do this in a desktop application.) If anyone can confirm that this is the only working method, please do so. I'm desperately trying to avoid it. The second doesn't work. Perhaps it worked in the past, but my umpteen attempts to get it to work have all failed. The third doesn't work. I've tried umpteen dozen variations with zero success. The last option there doesn't work for a desktop application because it's not ASP.NET and you don't have a session variable to work with. The Facebook C# SDK logout also no longer works. i.e. public FacebookLoginDialog(string appId, string[] extendedPermissions, bool logout) { IDictionary<string, object> loginParameters = new Dictionary<string, object> { { "response_type", "token" }, { "display", "popup" } }; _navigateUri = FacebookOAuthClient.GetLoginUrl(appId, null, extendedPermissions, logout, loginParameters); InitializeComponent(); } I remember it working in the past, but it no longer works now. (Which truly puzzles me...) It instead now directs the user to the Facebook mobile page, where the user must manually logout. Now, I could do browser automation to automatically click the logout link for the user, however, this is prone to breaking if Facebook updates the mobile UI. It is also messy, and possibly a worse solution than trying to use the JavaScript SDK FB.logout() method (though not by much). I have searched for some kind of documentation, however, I cannot find anything in the Facebook developer documentation that illustrates how to logout an application. Has anyone solved this problem, or seen any documentation that can be ported to work with the Facebook C# SDK? I am certainly open to using a WebClient or HttpClient/Response if anyone can point to some documentation that could work with it. I simply have not been able to find any low-level documentation that shows how this approach could work. Thank you in advance for any advice, pointers, or links.

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• Unable to start ServiceIntent android

  - by Mj1992

  I don't know why my service class is not working although it was working fine before. I've the following service class. public class MyIntentService extends IntentService { private static PowerManager.WakeLock sWakeLock; private static final Object LOCK = MyIntentService.class; public MyIntentService() { super("MuazzamService"); } @Override protected void onHandleIntent(Intent intent) { try { String action = intent.getAction(); <-- breakpoint if (action.equals("com.google.android.c2dm.intent.REGISTRATION")) <-- passes by { handleRegistration(intent); } else if (action.equals("com.google.android.c2dm.intent.RECEIVE")) { handleMessage(intent); } } finally { synchronized(LOCK) { sWakeLock.release(); } } } private void handleRegistration(Intent intent) { try { String registrationId = intent.getStringExtra("registration_id"); String error = intent.getStringExtra("error"); String unregistered = intent.getStringExtra("unregistered"); if (registrationId != null) { this.SendRegistrationIDViaHttp(registrationId); Log.i("Regid",registrationId); } if (unregistered != null) {} if (error != null) { if ("SERVICE_NOT_AVAILABLE".equals(error)) { Log.e("ServiceNoAvail",error); } else { Log.i("Error In Recieveing regid", "Received error: " + error); } } } catch(Exception e) { Log.e("ErrorHai(MIS0)",e.toString()); e.printStackTrace(); } } private void SendRegistrationIDViaHttp(String regID) { HttpClient httpclient = new DefaultHttpClient(); try { HttpGet httpget = new HttpGet("http://10.116.27.107/php/GCM/AndroidRequest.php?registrationID="+regID+"&[email protected]"); //test purposes k liye muazzam HttpResponse response = httpclient.execute(httpget); HttpEntity entity=response.getEntity(); if(entity!=null) { InputStream inputStream=entity.getContent(); String result= convertStreamToString(inputStream); Log.i("finalAnswer",result); // Toast.makeText(getApplicationContext(),regID, Toast.LENGTH_LONG).show(); } } catch (ClientProtocolException e) { Log.e("errorhai",e.getMessage()); e.printStackTrace(); } catch (IOException e) { Log.e("errorhai",e.getMessage()); e.printStackTrace(); } } private static String convertStreamToString(InputStream is) { BufferedReader reader = new BufferedReader(new InputStreamReader(is)); StringBuilder sb = new StringBuilder(); String line = null; try { while ((line = reader.readLine()) != null) { sb.append(line + "\n"); } } catch (IOException e) { Log.e("ErrorHai(MIS)",e.toString()); e.printStackTrace(); } finally { try { is.close(); } catch (IOException e) { Log.e("ErrorHai(MIS2)",e.toString()); e.printStackTrace(); } } return sb.toString(); } private void handleMessage(Intent intent) { try { String score = intent.getStringExtra("score"); String time = intent.getStringExtra("time"); Toast.makeText(getApplicationContext(), "hjhhjjhjhjh", Toast.LENGTH_LONG).show(); Log.e("GetExtraScore",score.toString()); Log.e("GetExtratime",time.toString()); } catch(NullPointerException e) { Log.e("je bat",e.getMessage()); } } static void runIntentInService(Context context,Intent intent){ synchronized(LOCK) { if (sWakeLock == null) { PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE); sWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "my_wakelock"); } } sWakeLock.acquire(); intent.setClassName(context, MyIntentService.class.getName()); context.startService(intent); } } and here's how I am calling the service as mentioned in the android docs. Intent registrationIntent = new Intent("com.google.android.c2dm.intent.REGISTER"); registrationIntent.putExtra("app", PendingIntent.getBroadcast(this, 0, new Intent(), 0)); registrationIntent.putExtra("sender",Sender_ID); startService(registrationIntent); I've declared the service in the manifest file inside the application tag. <service android:name="com.pack.gcm.MyIntentService" android:enabled="true"/> I placed a breakpoint in my IntentService class but it never goes there.But if I declare my registrationIntent like this Intent registrationIntent = new Intent(getApplicationContext(),com.pack.gcm.MyIntentService); It works and goes to the breakpoint I've placed but intent.getAction() contains null and hence it doesn't go into the if condition placed after those lines. It says 07-08 02:10:03.755: W/ActivityManager(60): Unable to start service Intent { act=com.google.android.c2dm.intent.REGISTER (has extras) }: not found in the logcat.

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• Custom event loop and UIKit controls. What extra magic Apple's event loop does?

  - by tequilatango

  Does anyone know or have good links that explain what iPhone's event loop does under the hood? We are using a custom event loop in our OpenGL-based iPhone game framework. It calls our game rendering system, calls presentRenderbuffer and pumps events using CFRunLoopRunInMode. See the code below for details. It works well when we are not using UIKit controls (as a proof, try Facetap, our first released game). However, when using UIKit controls, everything almost works, but not quite. Specifically, scrolling of UIKit controls doesn't work properly. For example, let's consider following scenario. We show UIImagePickerController on top of our own view. UIImagePickerController covers our custom view We also pause our own rendering, but keep on using the custom event loop. As said, everything works, except scrolling. Picking photos works. Drilling down to photo albums works and transition animations are smooth. When trying to scroll photo album view, the view follows your finger. Problem: when scrolling, scrolling stops immediately after you lift your finger. Normally, it continues smoothly based on the speed of your movement, but not when we are using the custom event loop. It seems that iPhone's event loop is doing some magic related to UIKit scrolling that we haven't implemented ourselves. Now, we can get UIKit controls to work just fine and dandy together with our own system by using Apple's event loop and calling our own rendering via NSTimer callbacks. However, I'd still like to understand, what is possibly happening inside iPhone's event loop that is not implemented in our custom event loop. - (void)customEventLoop { OBJC_METHOD; float excess = 0.0f; while(isRunning) { animationInterval = 1.0f / openGLapp->ticks_per_second(); // Calculate the target time to be used in this run of loop float wait = max(0.0, animationInterval - excess); Systemtime target = Systemtime::now().after_seconds(wait); Scope("event loop"); NSAutoreleasePool* pool = [[ NSAutoreleasePool alloc] init]; // Call our own render system and present render buffer [self drawView]; // Pump system events [self handleSystemEvents:target]; [pool release]; excess = target.seconds_to_now(); } } - (void)drawView { OBJC_METHOD; // call our own custom rendering bool bind = openGLapp->app_render(); // bind the buffer to be THE renderbuffer and present its contents if (bind) { opengl::bind_renderbuffer(renderbuffer); [context presentRenderbuffer:GL_RENDERBUFFER_OES]; } } - (void) handleSystemEvents:(Systemtime)target { OBJC_METHOD; SInt32 reason = 0; double time_left = target.seconds_since_now(); if (time_left <= 0.0) { while((reason = CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0, TRUE)) == kCFRunLoopRunHandledSource) {} } else { float dt = time_left; while((reason = CFRunLoopRunInMode(kCFRunLoopDefaultMode, dt, FALSE)) == kCFRunLoopRunHandledSource) { double time_left = target.seconds_since_now(); if (time_left <= 0.0) break; dt = (float) time_left; } } }

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• is it right to call ejb bean from thread by ThreadPoolExecutor?

  - by kislo_metal

  I trying to call some ejb bean method from tread. and getting error : (as is glassfish v3) Log Level SEVERE Logger javax.enterprise.system.std.com.sun.enterprise.v3.services.impl Name-Value Pairs {_ThreadName=Thread-1, _ThreadID=42} Record Number 928 Message ID java.lang.NullPointerException at ua.co.rufous.server.broker.TempLicService.run(TempLicService.java Complete Message 35) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:637) here is tread public class TempLicService implements Runnable { String hash; //it`s Stateful bean @EJB private LicActivatorLocal lActivator; public TempLicService(String hash) { this.hash= hash; } @Override public void run() { lActivator.proccessActivation(hash); } } my ThreadPoolExecutor public class RequestThreadPoolExecutor extends ThreadPoolExecutor { private boolean isPaused; private ReentrantLock pauseLock = new ReentrantLock(); private Condition unpaused = pauseLock.newCondition(); private static RequestThreadPoolExecutor threadPool; private RequestThreadPoolExecutor() { super(1, Integer.MAX_VALUE, 10, TimeUnit.SECONDS, new LinkedBlockingQueue<Runnable>()); System.out.println("RequestThreadPoolExecutor created"); } public static RequestThreadPoolExecutor getInstance() { if (threadPool == null) threadPool = new RequestThreadPoolExecutor(); return threadPool; } public void runService(Runnable task) { threadPool.execute(task); } protected void beforeExecute(Thread t, Runnable r) { super.beforeExecute(t, r); pauseLock.lock(); try { while (isPaused) unpaused.await(); } catch (InterruptedException ie) { t.interrupt(); } finally { pauseLock.unlock(); } } public void pause() { pauseLock.lock(); try { isPaused = true; } finally { pauseLock.unlock(); } } public void resume() { pauseLock.lock(); try { isPaused = false; unpaused.signalAll(); } finally { pauseLock.unlock(); } } public void shutDown() { threadPool.shutdown(); } //<<<<<< creating thread here public void runByHash(String hash) { Runnable service = new TempLicService(hash); threadPool.runService(service); } } and method where i call it (it is gwt servlet, but there is no proble to call thread that not contain ejb) : @Override public Boolean submitHash(String hash) { System.out.println("submiting hash"); try { if (tBoxService.getTempLicStatus(hash) == 1) { //<<< here is the call RequestThreadPoolExecutor.getInstance().runByHash(hash); return true; } } catch (NoResultException e) { e.printStackTrace(); } return false; } I need to organize some pool of submitting hash to server (calls of LicActivator bean), is ThreadPoolExecutor design good idea and why it is not working in my case? (as I know we can`t create thread inside bean, but could we call bean from different threads? ). If No, what is the bast practice for organize such request pool? Thanks. << Answer: I am using DI (EJB 3.1) soo i do not need any look up here. (application packed in ear and both modules in it (web module and ejb), it works perfect for me). But I can use it only in managed classes. So.. 2.Can I use manual look up in Tread ? Could I use Bean that extends ThreadPoolExecutor and calling another bean that implements Runnable ? Or it is not allowed ?

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• Android Activity ClassNotFoundException - tried everything

  - by Matthew Rathbone

  I've just refactored an app into a framework library and an application, but now when I try and start the app in the emulator I get the following error stack trace: 06-02 18:22:35.529: E/AndroidRuntime(586): FATAL EXCEPTION: main 06-02 18:22:35.529: E/AndroidRuntime(586): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.matthewrathbone.eastersays/com.matthewrathbone.eastersays.EasterSimonSaysActivity}: java.lang.ClassNotFoundException: com.matthewrathbone.eastersays.EasterSimonSaysActivity in loader dalvik.system.PathClassLoader[/data/app/com.matthewrathbone.eastersays-1.apk] 06-02 18:22:35.529: E/AndroidRuntime(586): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2585) 06-02 18:22:35.529: E/AndroidRuntime(586): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679) 06-02 18:22:35.529: E/AndroidRuntime(586): at android.app.ActivityThread.access$2300(ActivityThread.java:125) 06-02 18:22:35.529: E/AndroidRuntime(586): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033) 06-02 18:22:35.529: E/AndroidRuntime(586): at android.os.Handler.dispatchMessage(Handler.java:99) 06-02 18:22:35.529: E/AndroidRuntime(586): at android.os.Looper.loop(Looper.java:123) 06-02 18:22:35.529: E/AndroidRuntime(586): at android.app.ActivityThread.main(ActivityThread.java:4627) 06-02 18:22:35.529: E/AndroidRuntime(586): at java.lang.reflect.Method.invokeNative(Native Method) 06-02 18:22:35.529: E/AndroidRuntime(586): at java.lang.reflect.Method.invoke(Method.java:521) 06-02 18:22:35.529: E/AndroidRuntime(586): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 06-02 18:22:35.529: E/AndroidRuntime(586): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 06-02 18:22:35.529: E/AndroidRuntime(586): at dalvik.system.NativeStart.main(Native Method) 06-02 18:22:35.529: E/AndroidRuntime(586): Caused by: java.lang.ClassNotFoundException: com.matthewrathbone.eastersays.EasterSimonSaysActivity in loader dalvik.system.PathClassLoader[/data/app/com.matthewrathbone.eastersays-1.apk] 06-02 18:22:35.529: E/AndroidRuntime(586): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243) 06-02 18:22:35.529: E/AndroidRuntime(586): at java.lang.ClassLoader.loadClass(ClassLoader.java:573) 06-02 18:22:35.529: E/AndroidRuntime(586): at java.lang.ClassLoader.loadClass(ClassLoader.java:532) 06-02 18:22:35.529: E/AndroidRuntime(586): at android.app.Instrumentation.newActivity(Instrumentation.java:1021) 06-02 18:22:35.529: E/AndroidRuntime(586): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2577) 06-02 18:22:35.529: E/AndroidRuntime(586): ... 11 more Usually this means that the manifest file is wrong in some way, but I've double checked everything I can think of. Here is my activity class: package com.matthewrathbone.eastersays; import android.os.Bundle; import com.rathboma.simonsays.Assets.Season; import com.rathboma.simonsays.SeasonPicker; import com.rathboma.simonsays.SimonSaysActivity; public class EasterSimonSaysActivity extends SimonSaysActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); } @Override protected void onDestroy() { // TODO Auto-generated method stub super.onDestroy(); } @Override public SeasonPicker getSeasonPicker() { return new SeasonPicker(){ @Override public Season getSeason() { // TODO Auto-generated method stub return Season.EASTER; } }; } } As you can see, it's listed correctly in the manifest: <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.matthewrathbone.eastersays" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="7" android:targetSdkVersion="15" /> <application android:icon="@drawable/ic_launcher" android:label="@string/app_name" > <activity android:name=".EasterSimonSaysActivity" android:label="@string/app_name" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest> I have no idea how to fix this, and would appreciate any help. I've scanned many similar questions on SO without seeing this particular behavior. More info: I've checked inside the generated APK and the class has an entry in the classes.dex file I've tried cleaning/building the project in eclipse I've tried using a totally new device image that doesn't have a copy of the APK on it already I've changed the library project into a regular java, then changed back into an android project, no difference

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• Why does my Ajax function returns my entire code?

  - by JDelage

  I'm playing with sample code from the book "Head first Ajax". Here are the salient pieces of code: Index.php - html piece: <body> <div id="wrapper"> <div id="thumbnailPane"> <img src="images/itemGuitar.jpg" width="301" height="105" alt="guitar" title="itemGuitar" id="itemGuitar" onclick="getDetails(this)"/> <img src="images/itemShades.jpg" alt="sunglasses" width="301" height="88" title="itemShades" id="itemShades" onclick="getDetails(this)" /> <img src="images/itemCowbell.jpg" alt="cowbell" width="301" height="126" title="itemCowbell" id="itemCowbell" onclick="getDetails(this)" /> <img src="images/itemHat.jpg" alt="hat" width="300" height="152" title="itemHat" id="itemHat" onclick="getDetails(this)" /> </div> <div id="detailsPane"> <img src="images/blank-detail.jpg" width="346" height="153" id="itemDetail" /> <div id="description"></div> </div> </div> </body> Index.php - script: function getDetails(img){ var title = img.title; request = createRequest(); if (request == null) { alert("Unable to create request"); return; } var url= "getDetails.php?ImageID=" + escape(title); request.open("GET", url, true); request.onreadystatechange = displayDetails; request.send(null); } function displayDetails() { if (request.readyState == 4) { if (request.status == 200) { detailDiv = document.getElementById("description"); detailDiv.innerHTML = request.responseText; }else{ return; } }else{ return; } request.send(null); } And Index.php: <?php $details = array ( 'itemGuitar' => "<p>Pete Townshend once played this guitar while his own axe was in the shop having bits of drumkit removed from it.</p>", 'itemShades' => "<p>Yoko Ono's sunglasses. While perhaps not valued much by Beatles fans, this pair is rumored to have been licked by John Lennon.</p>", 'itemCowbell' => "<p>Remember the famous \"more cowbell\" skit from Saturday Night Live? Well, this is the actual cowbell.</p>", 'itemHat' => "<p>Michael Jackson's hat, as worn in the \"Billie Jean\" video. Not really rock memorabilia, but it smells better than Slash's tophat.</p>" ); if (isset($_REQUEST['ImageID'])){echo $details[$_REQUEST['ImageID']];} ?> All this code does is that when someone clicks on a thumbnail, a corresponding text description appears on the page. Here is my question. I have tried to bring the getDetails.php code inside Index.php, and modify the getDetails function so that the var url be "Index.php?ImageID="... . When I do that, I get the following problem: the function does not display the snippet of text in the array, as it should. Instead it reproduces the entire code - the webpage, etc - and then at the bottom the expected snippet of text. Why is that?

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• Is Fast Enumeration messing with my text output?

  - by Dan Ray

  Here I am iterating through an array of NSDictionary objects (inside the parsed JSON response of the EXCELLENT MapQuest directions API). I want to build up an HTML string to put into a UIWebView. My code says: for (NSDictionary *leg in legs ) { NSString *thisLeg = [NSString stringWithFormat:@"<br>%@ - %@", [leg valueForKey:@"narrative"], [leg valueForKey:@"distance"]]; NSLog(@"This leg's string is %@", thisLeg); [directionsOutput appendString:thisLeg]; } The content of directionsOutput (which is an NSMutableString) contains ALL the values for [leg valueForKey:@"narrative"], wrapped up in parens, followed by a hyphen, followed by all the parenthesized values for [leg valueForKey:@"distance"]. So I put in that NSLog call... and I get the same thing there! It appears that the for() is somehow batching up our output values as we iterate, and putting out the output only once. How do I make it not do this but instead do what I actually want, which is an iterative output as I iterate? Here's what NSLog gets. Yes, I know I need to figure out NSNumberFormatter. ;-) This leg's string is ( "Start out going NORTH on INFINITE LOOP.", "Turn LEFT to stay on INFINITE LOOP.", "Turn RIGHT onto N DE ANZA BLVD.", "Merge onto I-280 S toward SAN JOSE.", "Merge onto CA-87 S via EXIT 3A.", "Take the exit on the LEFT.", "Merge onto CA-85 S via EXIT 1A on the LEFT toward GILROY.", "Merge onto US-101 S via EXIT 1A on the LEFT toward LOS ANGELES.", "Take the CA-152 E/10TH ST exit, EXIT 356.", "Turn LEFT onto CA-152/E 10TH ST/PACHECO PASS HWY. Continue to follow CA-152/PACHECO PASS HWY.", "Turn SLIGHT RIGHT.", "Turn SLIGHT RIGHT onto PACHECO PASS HWY/CA-152 E. Continue to follow CA-152 E.", "Merge onto I-5 S toward LOS ANGELES.", "Take the CA-46 exit, EXIT 278, toward LOST HILLS/WASCO.", "Turn LEFT onto CA-46/PASO ROBLES HWY. Continue to follow CA-46.", "Merge onto CA-99 S toward BAKERSFIELD.", "Merge onto CA-58 E via EXIT 24 toward TEHACHAPI/MOJAVE.", "Merge onto I-15 N via the exit on the LEFT toward I-40/LAS VEGAS.", "Keep RIGHT to take I-40 E via EXIT 140A toward NEEDLES (Passing through ARIZONA, NEW MEXICO, TEXAS, OKLAHOMA, and ARKANSAS, then crossing into TENNESSEE).", "Merge onto I-40 E via EXIT 12C on the LEFT toward NASHVILLE (Crossing into NORTH CAROLINA).", "Merge onto I-40 BR E/US-421 S via EXIT 188 on the LEFT toward WINSTON-SALEM.", "Take the CLOVERDALE AVE exit, EXIT 4.", "Turn LEFT onto CLOVERDALE AVE SW.", "Turn SLIGHT LEFT onto N HAWTHORNE RD.", "Turn RIGHT onto W NORTHWEST BLVD.", "1047 W NORTHWEST BLVD is on the LEFT." ) - ( 0.0020000000949949026, 0.07800000160932541, 0.14000000059604645, 7.827000141143799, 5.0329999923706055, 0.15299999713897705, 5.050000190734863, 20.871000289916992, 0.3050000071525574, 2.802999973297119, 0.10199999809265137, 37.78000259399414, 124.50700378417969, 0.3970000147819519, 25.264001846313477, 20.475000381469727, 125.8580093383789, 4.538000106811523, 1693.0350341796875, 628.8970336914062, 3.7990000247955322, 0.19099999964237213, 0.4099999964237213, 0.257999986410141, 0.5170000195503235, 0 )

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• Help needed with drawRect:

  - by Andrew Coad

  Hi, I'm having a fundamental issue with use of drawRect: Any advice would be greatly appreciated. The application needs to draw a variety of .png images at different times, sometimes with animation, sometimes without. A design goal that I was hoping to adhere to is to have the code inside drawRect: very simple and "dumb" - i.e. just do drawing and no other application logic. To draw the image I am using the drawAtPoint: method of UIImage. Since this method does not take a CGContext as a parameter, it can only be called within the drawRect: method. So I have: - (void)drawRect:(CGRect)rect { [firstImage drawAtPoint:CGPointMake(firstOffsetX, firstOffsetY)]; } All fine and dandy for one image. To draw multiple images (over time) the approach I have taken is to maintain an array of dictionaries with each dictionary containing an image, the point location to draw at and a flag to enable/suppress drawing for that image. I add dictionaries to the array over time and trigger drawing via the setNeedsDisplay: method of UIView. Use of an array of dictionaries allows me to completely reconstruct the entire display at any time. drawRect: now becomes: - (void)drawRect:(CGRect)rect { for (NSMutableDictionary *imageDict in [self imageDisplayList]) { if ([[imageDict objectForKey:@"needsDisplay"] boolValue]) { [[imageDict objectForKey:@"image"] drawAtPoint:[[imageDict objectForKey:@"location"] CGPointValue]]; [imageDict setValue:[NSNumber numberWithBool:NO] forKey:@"needsDisplay"]; } } } Still OK. The code is simple and compact. Animating this is where I run into problems. The first problem is where do I put the animation code? Do I put it in UIView or UIViewController? If in UIView, do I put it in drawRect: or elsewhere? Because the actual animation depends on the overall state of the application, I would need nested switch statements which, if put in drawRect:, would look something like this: - (void)drawRect:(CGRect)rect { for (NSMutableDictionary *imageDict in [self imageDisplayList]) { if ([[imageDict objectForKey:@"needsDisplay"] boolValue]) { switch ([self currentState]) { case STATE_1: switch ([[imageDict objectForKey:@"animationID"] intValue]) { case ANIMATE_FADE_IN: [self setAlpha:0.0]; [UIView beginAnimations:[[imageDict objectForKey:@"animationID"] intValue] context:nil]; [UIView setAnimationDelegate:self]; [UIView setAnimationCurve:UIViewAnimationCurveEaseIn]; [UIView setAnimationDuration:2]; [self setAlpha:1.0]; break; case ANIMATE_FADE_OUT: [self setAlpha:1.0]; [UIView beginAnimations:[[imageDict objectForKey:@"animationID"] intValue] context:nil]; [UIView setAnimationDelegate:self]; [UIView setAnimationCurve:UIViewAnimationCurveEaseOut]; [UIView setAnimationDuration:2]; [self setAlpha:0.0]; break; case ANIMATE_OTHER: // similar code here break; default: break; } break; case STATE_2: // similar code here break; default: break; } [[imageDict objectForKey:@"image"] drawAtPoint:[[imageDict objectForKey:@"location"] CGPointValue]]; [imageDict setValue:[NSNumber numberWithBool:NO] forKey:@"needsDisplay"]; } } [UIView commitAnimations]; } In addition, to make multiple sequential animations work correctly, there would need to be an outer controlling mechanism involving the animation delegate animationDidStop: callback that would set the needsDisplay entries in the dictionaries to allow/suppress drawing (and animation). The point that we are at now is that it all starts to look very ugly. More specifically: drawRect: starts to bloat quickly and contain code that is not "just drawing" code the UIView needs implicit awareness of the application state the overall process of drawing is now spread across three methods at a minimum And on to the point of this post: how can I do this better? What would the experts out there recommend in terms of overall structure? How can I keep application state information out of the view? Am I looking at this problem from the wrong direction. Is there some completely different approach that I should consider?

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• How to set width of parent div in css

  - by Marcin Wiankowski

  I am using vaadin in combination with navigator7 addon. In header and footer there are spacings between conponents That i would not have. I tried to remove the spacings using setSpacing(false) for header and footer component but it is not working probably becouse of the addon. So i tried to solve this using css. The sample below i a test output html that vaadin generates: <!DOCTYPE html> <html> <head> <style type="text/css"> div div .footer-label, .footer-label{ color: green; width: 100px !important; } </style> </head> <body> <div class="my-footer"> <div> <div style="color: red; height: 20px; width: 482px; overflow: hidden; float: left; padding-left: 0px; padding-top: 0px; background-color:yellow;"> <div style="float: left; margin-left: 0px;"> <button class="footer-label" style="width: 400px;">Text</button> </div> </div> </div> </div> </div> </body> </html> There is a button inside div div. I would like to make the width of root div to have exact same width as the button. I ended with this css code but it does not work. The root div stays in its 482 pixels width. div div .footer-label, .footer-label{ color: green; width: 100px !important; } Is it possible to do something like that in css and how to do it? Or how to solve this using problem using Vaadin? Vaadin Code public class MyAppLevelWindow extends HeaderFooterFixedAppLevelWindow { @Override protected Component createHeader() { ... } @Override protected Component createFooter() { HorizontalLayout myFooter = new HorizontalLayout(); akmedFooter.setSpacing(false); akmedFooter.setStyleName("my-footer"); NativeButton sendProblemButton = new NativeButton("Button"); sendProblemButton.setStyleName("footer-label"); akmedFooter.addComponent(sendProblemButton); ..... return akmedFooter; } ............. } Answer .my-footer div div{ width: auto !important; }

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• Debugging EXC_BAD_ACCESS that occurs only on release target for an iPhone app?

  - by Bobby Moretti

  I'm developing an iPhone application. I have an EXC_BAD_ACCESS that occurs only in the release target; when I build the debug target the exception does not occur. However, when I set the NSZombieEnabled environment variable to YES, I still get the EXC_BAD_ACCESS with no further information. Is it even possible for NSZombieEnabled to work when executing the release target? I don't see why not, since gdb is running in both cases... Update: here is a printout of the top of the stack: #0 0x33369ebc in objc_msgSend () #1 0x3144f968 in -[EAInputStream _streamEventTrigger] () #2 0x3144fe78 in __streamEventTrigger () #3 0x338ae3a6 in CFRunLoopRunSpecific () #4 0x338adc1e in CFRunLoopRunInMode () #5 0x32ed6966 in -[NSRunLoop(NSRunLoop) runMode:beforeDate:] () #6 0x00005b06 in -[IOStreamDelegate removeMsg:] (self=0x142cc0, _cmd=<value temporarily unavailable, due to optimizations>, message=0x2fffe544) at /Users/robertmoretti/Documents/XXXXXXX/IOStreamDelegate.m:191 Here is a gdb session from inside the objc_msgSend call at the top: (gdb) p/x $r0 $6 = 0x3100000 (gdb) x/s $r1 0x32d7cff8: "release" (gdb) disassemble $pc Dump of assembler code for function objc_msgSend: 0x33369ea8 <objc_msgSend+0>: teq r0, #0 ; 0x0 0x33369eac <objc_msgSend+4>: moveq r1, #0 ; 0x0 0x33369eb0 <objc_msgSend+8>: bxeq lr 0x33369eb4 <objc_msgSend+12>: push {r3, r4, r5, r6} 0x33369eb8 <objc_msgSend+16>: ldr r4, [r0] 0x33369ebc <objc_msgSend+20>: ldr r5, [r4, #8] 0x33369ec0 <objc_msgSend+24>: ldr r6, [r5] 0x33369ec4 <objc_msgSend+28>: add r3, r5, #8 ; 0x8 0x33369ec8 <objc_msgSend+32>: and r5, r6, r1, lsr #2 0x33369ecc <objc_msgSend+36>: ldr r4, [r3, r5, lsl #2] 0x33369ed0 <objc_msgSend+40>: teq r4, #0 ; 0x0 0x33369ed4 <objc_msgSend+44>: add r5, r5, #1 ; 0x1 0x33369ed8 <objc_msgSend+48>: beq 0x33369efc <objc_msgSend+84> 0x33369edc <objc_msgSend+52>: ldr r12, [r4] 0x33369ee0 <objc_msgSend+56>: teq r1, r12 0x33369ee4 <objc_msgSend+60>: and r5, r5, r6 0x33369ee8 <objc_msgSend+64>: bne 0x33369ecc <objc_msgSend+36> 0x33369eec <objc_msgSend+68>: ldr r12, [r4, #8] 0x33369ef0 <objc_msgSend+72>: teq r4, r4 0x33369ef4 <objc_msgSend+76>: pop {r3, r4, r5, r6} 0x33369ef8 <objc_msgSend+80>: bx r12 0x33369efc <objc_msgSend+84>: pop {r3, r4, r5, r6} 0x33369f00 <objc_msgSend+88>: b 0x33369f04 <objc_msgSend_uncached> End of assembler dump. (gdb) p/x *$r0 $9 = 0x0 The exception occurs on the line 0x33369ebc <objc_msgSend+20>: ldr r5, [r4, #8]. r4 has just been given the value pointed to by r0, which happens to be 0. I am wondering what is supposed to be in the memory region of 0x3100000. Here's a memory dump of that area: (gdb) x/256w 0x3100000 0x3100000: 0x00000000 0x0000a293 0xaa650505 0x00000000 0x3100010: 0x0000a294 0xaa670505 0x00000000 0x0000a295 0x3100020: 0xaa690505 0x00000000 0x0000a296 0xaa6b0505 0x3100030: 0x00000000 0x0000a297 0xaa6d0505 0x00000000 0x3100040: 0x0000a298 0xaa6f0505 0x00000000 0x0000a299 0x3100050: 0xaa710505 0x00000000 0x0000a29a 0xaa730505 0x3100060: 0x00000000 0x0000a29b 0xaa750505 0x00000000 0x3100070: 0x0000a29c 0xaa770505 0x00000000 0x0000a29d 0x3100080: 0xaa790505 0x00000000 0x0000a29e 0xaa7b0505 0x3100090: 0x00000000 0x0000a29f 0xaa7d0505 0x00000000 0x31000a0: 0x0000a2a0 0xaa7f0505 0x00000000 0x0000a2a1 0x31000b0: 0xaa810505 0x00000000 0x0000a2a2 0xaa830505 0x31000c0: 0x00000000 0x0000a2a3 0xaa850505 0x00000000 0x31000d0: 0x0000a2a4 0xaa870505 0x00000000 0x0000a2a5 0x31000e0: 0xaa890505 0x00000000 0x0000a2a6 0xaa8b0505 0x31000f0: 0x00000000 0x0000a2a7 0xaa8d0505 0x00000000 0x3100100: 0x0000a2a8 0xaa8f0505 0x00000000 0x0000a2a9 0x3100110: 0xaa910505 0x00000000 0x0000a2aa 0xaa930505 0x3100120: 0x00000000 0x0000a2ab 0xaa950505 0x00000000 0x3100130: 0x0000a2ac 0xaa970505 0x00000000 0x0000a2ad 0x3100140: 0xaa990505 0x00000000 0x0000a2ae 0xaa9b0505 0x3100150: 0x00000000 0x0000a2af 0xaa9d0505 0x00000000 0x3100160: 0x0000a2b0 0xaa9f0505 0x00000000 0x0000a2b1 0x3100170: 0xaaa10505 0x00000000 0x0000a2b2 0xaaa30505 0x3100180: 0x00000000 0x0000a2b3 0xaaa50505 0x00000000 0x3100190: 0x0000a2b4 0xaaa70505 0x00000000 0x0000a2b5 0x31001a0: 0xaaa90505 0x00000000 0x0000a2b6 0xaaab0505 0x31001b0: 0x00000000 0x0000a2b7 0xaaad0505 0x00000000 0x31001c0: 0x0000a2b8 0xaaaf0505 0x00000000 0x0000a2b9 0x31001d0: 0xaab10505 0x00000000 0x0000a2ba 0xaab30505 0x31001e0: 0x00000000 0x0000a2bb 0xaab50505 0x00000000 0x31001f0: 0x0000a2bc 0xaab70505 0x00000000 0x0000a2bd 0x3100200: 0xaab90505 0x00000000 0x0000a2be 0xaabb0505 0x3100210: 0x00000000 0x0000a2bf 0xaabd0505 0x00000000 0x3100220: 0x0000a2c0 0xaabf0505 0x00000000 0x0000a2c1 0x3100230: 0xaac10505 0x00000000 0x0000a2c2 0xaac30505 0x3100240: 0x00000000 0x0000a2c3 0xaac50505 0x00000000 0x3100250: 0x0000a2c4 0xaac70505 0x00000000 0x0000a2c5 0x3100260: 0xaac90505 0x00000000 0x0000a2c6 0xaacb0505 0x3100270: 0x00000000 0x0000a2c7 0xaacd0505 0x00000000 0x3100280: 0x0000a2c8 0xaacf0505 0x00000000 0x0000a2c9 0x3100290: 0xaad10505 0x00000000 0x0000a2ca 0xaad30505 0x31002a0: 0x00000000 0x0000a2cb 0xaad50505 0x00000000 0x31002b0: 0x0000a2cc 0xaad70505 0x00000000 0x0000a2cd 0x31002c0: 0xaad90505 0x00000000 0x0000a2ce 0xaadb0505 0x31002d0: 0x00000000 0x0000a2cf 0xaadd0505 0x00000000 0x31002e0: 0x0000a2d0 0xaadf0505 0x00000000 0x0000a2d1 0x31002f0: 0xaae10505 0x00000000 0x0000a2d2 0xaae30505 0x3100300: 0x00000000 0x0000a2d3 0xaae50505 0x00000000 0x3100310: 0x0000a2d4 0xaae70505 0x00000000 0x0000a2d5 0x3100320: 0xaae90505 0x00000000 0x0000a2d6 0xaaeb0505 0x3100330: 0x00000000 0x0000a2d7 0xaaed0505 0x00000000 0x3100340: 0x0000a2d8 0xaaef0505 0x00000000 0x0000a2d9 0x3100350: 0xaaf10505 0x00000000 0x0000a2da 0xaaf30505 0x3100360: 0x00000000 0x0000a2db 0xaaf50505 0x00000000 0x3100370: 0x0000a2dc 0xaaf70505 0x00000000 0x0000a2dd 0x3100380: 0xaaf90505 0x00000000 0x0000a2de 0xaafb0505 0x3100390: 0x00000000 0x0000a2df 0xaafd0505 0x00000000 0x31003a0: 0x0000a2e0 0xab050505 0x00000000 0x0000a2e1 0x31003b0: 0xab070505 0x00000000 0x0000a2e2 0xab090505 0x31003c0: 0x00000000 0x0000a2e3 0xab0b0505 0x00000000 0x31003d0: 0x0000a2e4 0xab0d0505 0x00000000 0x0000a2e5 0x31003e0: 0xab0f0505 0x00000000 0x0000a2e6 0xab110505 0x31003f0: 0x00000000 0x0000a2e7 0xab130505 0x00000000 I don't really know what else to try; hopefully someone with more iphone experience will be able to recognize this memory as something meaningful.

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• fonts mac vs pc

  - by Kieran

  Hi all hope your having a good day/evening. Simple question, but maybe not so simple to answer. I have an unordered list, which i am using as a menu. The list items are floated right and sized due to an anchor tag inside them with a roll over. The last element is given a specific size to suck up any extra space. See the code snippits bellow. css ul.mainNav { width: 970px; display:block; background:black; clear:both; overflow:hidden;} ul.mainNav li { float: left; height:29px;} ul.mainNav li a { display: block; padding:7px 19px; color:#ffffff; background-color:#000; font-weight:bold; text-decoration:none; font-size:13px; } ul.mainNav li a:hover, ul.mainNav li a.selected { background-color:#ffff00; color:#000; } ul.mainNav li a.last{ text-align:center; padding: 7px 19px; width:58px;} html <ul class="mainNav" id="mainNav"> <li><a href="/Default.aspx">home</a></li> <li><a href="/About/">about</a></li> <li><a href="/News/">news</a></li> <li><a href="/Enter/Registration.aspx">enter SOYA 2010</a></li> <li><a href="/Categories/Film.aspx">categories</a></li> <li><a href="/Mentors/janChapman.aspx">mentors</a></li> <li><a href="/PastWinners/">past winners</a></li> <li><a href="/Awards/">awards nights</a></li> <li><a href="/Support/" class="last">contact</a></li> </ul> It is containted in a <div style="margin:0 auto;">...</div> to center on the menu on screen Now my problem is: On PC; firefox/ Safari /IE /Chrome are all displaying correctly. Take the same code to a Mac; Safari/ firefox are displaying the menu to be too short and the only thing i can point to is that the fonts may be smaller in widths. The width is currently set to 970px. My question is: How can i get it to display at the same widths without specifying exact widths for each list item? Any help would be appreciated. If my structure is wrong or it is just a mac thing that i will never solve(hope not). Cheers, KJ

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