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• Connecting two DialogBoxes in GWT

  - by Apophenia Overload

  In my GWT project, I'm trying to get it so two DialogBoxes can pass information between each other. One of them holds a MapWidget, and when a button is pressed in the other DialogBox, the position information is received from that other DialogBox's MapWidget. Does anyone have any tips for how I should coordinate between having two different DialogBoxes show up? Should I wrap the code for the two in a Composite? Furthermore, is there an example anywhere of dealing with two DialogBoxes at once in GWT? For example, if I click outside of the two boxes, both should be dismissed. I'm wondering if there's a way to keep both of them in focus at once, so I can switch between the two without causing either to disappear.

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• How can I not render a button in my view if a given property off my model has no value?

  - by Lee Warner

  I'm new to web development. In my view, I want to conditionally show a button if Model.TemplateLocation (which is a string) is not null or empty. Below is the code that is rendering the button currently: <div class="WPButton MyButton"> <%=Html.ActionLink(Model.TemplateLinkName, "DownloadTemplate", "ExternalData", new ArgsDownloadTemplate { Path = Model.TemplateLocation, FileName = Model.TemplateFileNameForDownload }, new{})%> </div> Can I wrap some C# code in the <% %'s to test for Model.TemplateLocations value before I render that? I was told to look into @style = "display:none" somehow. Could that be what I need?

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• Anonymous iterator blocks in Clojure?

  - by Checkers

  I am using clojure.contrib.sql to fetch some records from an SQLite database. (defn read-all-foo [] (with-connection *db* (with-query-results res ["select * from foo"] (into [] res)))) Now, I don't really want to realize the whole sequence before returning from the function (i.e. I want to keep it lazy), but if I return res directly or wrap it some kind of lazy wrapper (for example I want to make a certain map transformation on result sequence), SQL-related bindings will be reset and connection will be closed after I return, so realizing the sequence will throw an exception. How can I enclose the whole function in a closure and return a kind of anonymous iterator block (like yield in C# or Python)? Or is there another way to return a lazy sequence from this function?

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• Synchronizing access to an inner object's methods?

  - by user291701

  Suppose I have the following: public class Foo { private ReadingList mReadingList = new ReadingList(); public ReadingList getReadingList() { synchronized (mReadingList) { return mReadingList; } } } If I try modifying the ReadingList object in two threads, the synchronization above won't help me, right?: // Thread 1 foo1.getReadingList().setName("aaa"); // Thread 2 foo2.getReadingList().setName("bbb"); do I have to wrap each method I want synchronized like so: public class Foo { private ReadingList mReadingList = new ReadingList(); public synchronized void setReadingListName(String name) { mReadingList.setName(name); } public synchronized void setReadingListAuthor(String author) { mReadingList.setAuthor(author); } ... and so on for each method of ReadingList I want exposed and synched? I'd end up just writing wrapper methods for each method of ReadingList. Thanks

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• improve my jquery validation plugin code

  - by Jared

  Hi All Just hoping soemone can help me to write better code than I can come up with on my own. I am using the jquery validation plugin. I have some fields that are mandatory ONLY if certain options are chosen. The below code works fine. But the thing is, is that that my list of 'OR's is much longer than I've put here. and it needs to be applied not just to 'directorsName' but a whole long list of inputs, selects etc. My question is.. how can I wrap up the code contained inside the RETURN? (so I dont have to keep repeating my 'OR's. I'm guessign I need a function but I'm unsure of the syntax) $("#myForm").validate({ rules: { directorsName : { required: function(element) { return ( $('#account_for').val() == "Joint" || $('#directors_number').val() == "2" || $('#directors_number').val() == "3" ); } } } }); Thanks in advance

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• Display file/folder/drive names in full on the desktop

  - by mathee

  In Mac OS X, when the text for a desktop icon is particularly long, it's displayed with an ellipsis: How do I configure whatever I'm supposed to configure (Finder?) to display that and all text in full? (No ellipses, please!) Edit: I do know that you can change the icon/text/grid size to allow for more text, but I don't necessarily want to change those settings. I want to change how Apple displays the text. That is, I want it to display either as one long string (which will run into other strings if two long file/folder names are next to each other, they will appear to overlap) or word-wrapped according to the size of the grid.

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• I'm having a hard time wrapping my head around handling the Activity Lifecycle...

  - by kefs

  So it seems i've created a fatal flaw and coded an app before understanding/handling rotation/lifecycle events.. Currently, all of my code is in onCreate of each activity. I've read a lot of lifecycle tutorials online, including the official dev guide info, but i'm still having an almost unbelievably hard time trying to wrap my head around the rotation/lifecycle events/methods and when to use them correctly. For example, my app currently has an activity that opens the db, inserts a record, then closes the db.. if i rotate my screen on this activity, the data is re-entered into the db. Using the available lifecycle events (onPause(), onResume(), etc..), how would I prevent this db call from happening again? Would I have to pass a variable through the state saying that the db call has been done, and not to do it again? Thanks in advance..

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• Is there a way to cut and paste or clone CSS from one element to another using JQuery?

  - by Jared Christensen

  I have a situation where I'm wrapping an image with a span and I want to remove all the CSS from the image and apply it to the span. Is there a way to do this with JQuery? JQuery: $(img).wrap('<span />'); Style Sheet: img { border: 5px solid red; padding: 10px; … } I would like do to do this with out editing the HTML or CSS. For example adding a class to the image would not work very well in my situation. I need a way to truly remove the CSS from one element and place it on another.

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• How to not encapsulate Coffeescript

  - by JellicleCat

  I don't know whether all coffeescript compilers wrap their scripts in anonymous functions, but that's what I see Rails doing. How can I disable this encapsulation? I want to put several initializing functions in a single coffeescript file, then call one of them from an on-page <script> tag (so that each page calls a different initializer). This can't be if the initializing functions are encapsulated. Coffeescript initializer functions: initializerA = -> console.log 'foo' initializerB = -> console.log 'bar' On-page code: <script>$(document).ready(initializerA)</script> Sys: coffee-rails 3.2.1, Rails 3.2.3, Ruby 1.9.3

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• how to record videos from my laptop webcam?

  - by Nick

  I am not sure but I can't seem to turn on my webcam to record videos which I would broad cast somewhere later on. I have a HP G62 Laptop, and the cam turns on when I use programs like Skype and other Video Calling clients, other wise I can't turn it own, as I don't seem to know how. Laptop: HP G62 Notebook PC, AMD Atholon II P230 Dual-Core, Windows 7: Home Premium Can some one tell me how do I turn on my webcam and record videos? Or is there some sort of a software? I tend to read stuff I wrote in Word, so if there is a program I need it to be in the tray dock and not to bug me, while I am moving between different documents/web pages.

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• Java Custom exception throw behaves differently between different Projects

  - by Pablo

  I am attempting to call the following in my code: public void checkParticleLightRestriction(Particle parent) throws LightException { if ( parent == null ) { throw new LightException("quantum-particle-restrict.23", this); } In one Project the exception is thrown and the effect is similar to calling "return" whereby I am returned back to the point immediately succeeding where this method was called. However in another Project I get thrown completed out of the current package and to a point way prior to the point preceeding this method. It likes instead of being kicked out of a bar I am being deported all the way out of the country. My option are the wrap the throw in a try / catch but I am wondering why this difference in behaviour beween the 2 projects ?

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• Using Drools to provide error processing and consequence management

  - by Mike

  Hi, I am working on a module whose purpose is to process Java exceptions and decide upon a strategy for dealing with them. The exceptions could be things I know about (explicit business exceptions eg TransformationException) or more general environmental stuff (JMS errors, IO errors etc) The facts inserted into the knowledge base are all the same class, and wrap (contain) an Exception. I want to write a rule that will explicitly match the exceptions I know how to deal with (eg TransformationException) and have another rule that catches 'everything else' The problem seems to me to be that for a fact containing a TransformationException, both rules will fire and the output will be uncertain. How would I go about writing such exclusive rules without relying on salience to steer the order of execution (this seems to be bad practice from what I have read)? I have a solution in place that I am not happy with whereby the outcome depends on the order in which the rules are defined in my .drl.

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• How to print through remote computer with TeamViewer

  - by senzacionale

  We are using TeamViewer and we would like to print at the remote computer. Is this possible? If yes, how? I've been reading the docs but I can't find a solution. Further Explanation: I am on my machine say machine 1. And, I am connected to Machine 2 on the internet somewhere through Teamviewer. I know that Machine 2 has printer attached to it and it is working well. What I want is to print a Word Document for example which is locally on Machine 1 to be printed on Machine 2's printer. Is this possible?

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• Why am I getting 'File in use by Another User' and 'Application Sharing Violation' errors when trying to open & and save files?

  - by GollyJer

  We're getting this a lot lately. Windows 2008 Server Windows 7 & Vista Client PC's Microsoft Office 2007 When a user tries opening a file on our network drive (word doc, excel spreadsheet, etc) the software reports the file is locked by 'another user' even when it's not. They're also seeing random 'Sharing Violation' errors when trying to save files to the network. Possibly the same manifestation of the problem shows up when a user tries saving a local, on their own drive, non-network files and they get 'Can not save due to a Sharing Violation'.

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• jQuery: what is it "forbidden" to do in plain Javascript

  - by flybywire

  A jQuery best practices question. I am writing a very jQuery intensive web page. I am new to jQuery and notice its power, but as I come with heavy javascript experience and knowledge, my question is: What should be done in jQuery and what in plain javascript. For example, there are callbacks that send a plain DOM object as an argument. Should I use that or should I wrap it ( like $(this)). Does it matter if I do this.x=y or $(this).attr("x", y).

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• Can't copy paste on the first try

  - by Sunny88

  When I try to copy and paste something from firefox to say notepad or word, it doesn't work on the first try. That is I go to firefox, select text, right click, select copy, then switch to notepad, right click, select paste, but it pastes not the thing which I copied just now, but whatever was in the clipboard before I copied. If after this I go back to firefox and copy that text again, and then go back to notepad, then it will paste correctly. So in order to copy paste something it takes me 2 tries. This doesn't always happen this way, but only sometimes. So sometimes I can paste on first try, but sometimes it takes me two tries. I am using firefox 7.0.1 and windows 7. Also it is not only with firefox, sometimes the same thing happens when I copy paste from other programs. What could be the reason, and how can I fix this?

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• Online Game programming in Google App Engine: AI

  - by Hortinstein

  I am currently in the planning stages of a game for google app engine, but cannot wrap my head around how I am going to handle AI. I intend to have persistant NPCs that will move about the map, but short of writing a program that generates the same XML requests I use to control player actions, than run it on another server I am stuck on how to do it. I have looked at the Task Queue feature, but due to long running processes not being an option on the App engine, I am a little stuck. I intend to run multiple server instances with 200+ persistant NPC entities that I will need to update. Most action is slowly roaming around based on player movements/concentrations, and attacking close range players(you can probably guess the type of game im developing)

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• Computer freezes, wireless network icon disappears

  - by Heidi

  As you can see I have two problems. I have a Toshiba Tecra A3 computer. It is 5-6 years old and it is connected to a D-link router. For a period now it has not been working correctly. The computer freezes either when i try turning it on or when I have been using the computer for a short period of time. The times the computer works normally I have a problem with a disappearing wireless network icon, and so I have no internet. Can this be fixed or do I have to buy a new computer? I only use the computer for internet surfing and easy tasks like word etc, so I would like to keep it as long as possible.

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• How to copy and paste code with retaining the format

  - by Sab

  This question may have been asked before but I was unable to find any solution. So here goes: When I browse and see some code that I would like to copy I simply use ctrl+c and ctrl+v. Most of the time this works fine. But in some cases (websites like stackoverflow and others ) when I copy the code and paste it , it only comes on one line in eclipse. I have tried pasting this code into eclipse and select all and hitting auto format but this doesnt help either. I have also pasted the code into komodo and word. But to no avail. The code simply refuses to align itself. Does anyone know any solution to this?

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• Delegates vs. events in Cocoa

  - by aaronstacy

  I'm writing my first iPhone app, and I've been exploring the design patterns in Cocoa and Objective-C. I come from a background of client-side web development, so I'm trying to wrap my head around delegates. Specifically, I don't see why delegate objects are needed instead of event handlers. For instance, when the user presses a button, it is handled with an event (UITouchUpInside), but when the user finishes inputting to a text box and closes it with the 'Done' button, the action is handled by calling a method on the text box's delegate (textFieldShouldReturn). Why use a delegate method instead of an event? I also notice this in the view controller with the viewDidLoad method. Why not just use events?

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• Acrobat Reader, and indeed all Adobe products are freezing and crashing on print

  - by 5tratus

  Everything was working fine, right up till I had to do some driver work to get my scanner to work - now I can't seem to print from any Adobe product. I click print and the program freezes, it stops responding, and in the case of Acrobat Reader, it crashes. In the case of In-design CS4, I have to stop the process in task manager, in the case of Fireworks CS3 - I think it just crashes. Printing a PDF hangs and crashes inside of Firefox and IE browsers too. My printer works and I can print from MS Word, Excel and directly by right clicking on a non-Adobe file and choosing print. But when I try it in an Adobe product. I'm running Windows 7 64-bit, my version of Adobe Reader is: 10.1.11, Windows is updated, and I don't have any unusual extensions.

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• jQuery dialog box not opening 2nd time

  - by Steven

  I found this thread which basically has the same issue I have. But their solution is not working for me. The dialog appears the first time I click the submit button, but not the 2nd time. I'm opening the dialog box after a form submission. UPDATE I finally got it working. Here is the correct code: if (jQuery('#registrationforms').length > 0) { //instantiate the dialog jQuery("#dialog").dialog({ modal:true, autoOpen:false }); //Some more code here to call processRegistration function. } function processRegistration(instanceID, formData) { jQuery.post("mypath/jquery_bll.php", { instance: 'processRegistration', formData : formData, instanceID : instanceID }, function(feedback) { jQuery('#dialog').text(feedback.message); jQuery('#dialog').parent().addClass(feedback.type); jQuery('#dialog').dialog('open'); },"json"); } Since I'm dynamically applying css class, I have to make sure to add it to the outer DIV which $.dialog creates to wrap my 'dialog' DIV.

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• Cast object as OleVariant in Delphi

  - by Alan Clark

  Is there a way to pass a wrap and unwrap a TObject descendent in an OleVariant? I am trying to pass a TObject across automation objects. I know it's not a good idea but I don't have a good alternative. Something like this: function GetMyObjAsVariant; var MyObj: TMyObj; begin MyObj := TMyObj.Create; result := OleVariant(MyObj); end; Which would be used by a client as var MyObj: TMyObj; begin MyObj := GetMyObjAsVariant as TMyObj; end; This fails to compile, returning E2015 Operator not applicable to this operand type.

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• How can I add a border to all the elements that share a class when the mouse has hovered over one of

  - by Siracuse

  I have a generated HTML file which has large blocks of text with span's sprinkled throughout it with generated class names: This <span class="21232">an example</span> of what <span class="332423"> I'm talking</span> about. There are span's with <span class="21232"> generated ID's </span>. Now, what I'm seeking to do, is if I hover over any of my spans, they will add a border to not only that span, but all other spans that share that same class. So, if I were to hover over the first span, it would wrap a border around "an example" and "generated ID's" because the first and third span share the same class name. I was pretty sure I couldn't do it in straight CSS. Is this possible using jQuery? If so, can anyone point me in the right direction for doing this as simply as possible?

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• Can a function defined in a bookmarklet be called from a page-level script?

  - by Soviut

  I have a bookmarklet that needs to open a new window/tab. In order to avoid the popup blocker, I need to call the window.open() method directly in the bookmarklet ie: at the browser-level. However, I want to keep the bookmarklet updatable by loading external Javascript files. To do this, the bookmarklet needs to append script nodes to the DOM. If i were to put window.open() code in one of these externally loaded scripts, the popup blocker would block it since its page-level. What I want to know is if I can create a wrapper function around window.open() in my bookmarklet, then call it from the externally loaded script? What is the scope and what are the permissions on a wrap such as this?

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