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• Wicket Drag and drop functionality for adding an image

  - by Marcel

  I'm making a wicket app that can manage some options for a cashdesk app. One of the options is to change the image of a selected Product. The user(manager) can choose from the already present images in the database (SQL) when this option is selected, or add a new image if the desired image is not present. Don't mention the test names and awesome images (it's still in test-fase) I prefer to see the adding of an image achieved by Drag and Drop html5 demo [dnd-upload] (From the desktop into the browser) I'm currently using Wicket-6.2.0 and wicket-dnd 0.5.0 and i can't seem to get this working! All examples I can find are from wicket 2.x or lower. It is possible to use drag and drop in Wicket-6.2, but how do I achieve this? There seems to be some DraggableBehavior in wicket? Any help is welcome! [UPDATE] Upgraded to wicket-dnd 0.6

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• How do I push a new project to a shared Mercurial multi-repository?

  - by j-g-faustus

  I have a local machine ("laptop") and a shared Mercurial repository on another machine ("server"). The shared repository is set up as a multi-repository as described in the Mercurial documentation using Apache, the hgwebdir.cgi script and Mercurial 1.4. The setup works in the sense that I can browse the projects (repositories) in the web browser, I can clone and pull from the server, and I can push from the laptop when the project/repository already exists on the server. But I cannot create a new project on the laptop (hg init, do stuff, hg commit) and push it to the shared multi-repository (hg push http://server/hg/my-new-project-name) - I get "abort: HTTP Error 404: Not Found", presumably because the directory/project repository does not exist yet. How can I push a new project/directory structure to a Mercurial running elsewhere? I couldn't find anything in the documentation, how do you guys do it?

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• What's the diffrence btw System property and system environment variable

  - by khue

  Hi all I am not clear about this. When I run a java App or run an Applet in applet viewer,( in the IDE environment), System.getProperty("java.class.path") give me the same as System.getenv("CLASSPATH"), which is the CLASSPATH env variable defined. But when I deploy my applet to webserver and access it from the same computer as a client, I get different result for the two (System.getProperty("java.class.path") only point to jre home and System.getenv("CLASSPATH") return null). And here is some other things that make me wonder: For the applet part, the env var JAVA_HOME, i get the same result when deploying the applet in a browser as well as Applet Viewer. And if I define myself a env variable at system level, and use getenv("envName") the result is null. Is there anyway I can define one and get it in my java program? Thanks a lot Regards K.

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• What *collaborative* wireframing / UI mockup tools are out there?

  - by taco

  I'm looking for something that applies the collaboration focus (one location/URL, always up-to-date, multi-person online read/write access anywhere) of google docs / google spreadsheets to wireframing. Bonus points if, like Google Docs, it needs only a browser yet also works offline. More bonus points if it supports automatic revisions. Even more bonus points if you can hand out login-less 'invitation' URLs like Flickr does, instead of forcing people into signing up for accounts or using their home accounts. To start off, there's one called iPlotz, but it didn't enchant me -- ironically, mostly because of its akward UI, which can't hold a candle to omnigraffle (don't let that prevent you from giving it a try though). And no, paper prototyping, wonderful as it is, does not qualify: it does not combine being instantly globally shareable & editable very well :-)

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• jQuery droppable accordion

  - by awshepard

  I've been playing around with trying to create a droppable accordion for a little while, and haven't gotten it to be very responsive. When I drag an item over the accordion, it takes 5+ seconds for the accordion element to open (if it does at all). Sometimes I have to "wave" the dragged element over the accordion element. I know I read something a while back about event processing in javascript - something along the lines of the browser not always passing control to the javascript engine when you think it does, or something like that, resulting in weird timing. Has anyone else seen tried to do this before? Have you found jquery/javascript to be this slow? Do you have any references for how to get a responsive droppable accordion (the jQuery UI site doesn't seem to, and I didn't find anything on SO or Google). Thanks!

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• HTML character reference display problems.

  - by Bren

  Hey folks, I'm currently developing a site in Joomla, and one of the components I'm using makes use of a PHP file to administer the language. (english.php, spanish.php) The problem I'm having is that if I use the plain text version of eg. "á", it will show up in the browser tab title ok, but as a ? in the body of the page. But if I use a character reference (&#225;), the reverse happens! Any ideas? Thanks bren

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• is it legal to use fontsquirrel.com to create a @font-face kit for a font I have been given?

  - by ongoingworlds

  fontsquirrel.com allows you to upload a font and create a @font-face kit which you can apply to your website and use to display fonts which will display cross-browser (even in IE6!). But what I want to know is, is this legal? I've been supplied the font "Lubalin Graph Std" and told to use this for headers on the website I'm creating. I can upload the font file to fontsquirrel.com and use this to display headers in this font across the website - but I'm worried we'll get into trouble for doing this. What should I do?

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• Gears or HTML5 Location API on Android 1.5

  - by Dmitry

  Hi there, I am trying to use gwt-mobile-webkit, particularly its location api. It works well with iPhone (both device and simulator) and Firefox and on G1 with 1.6 Android, however, it does not work on G2 with Android 1.5 on it. In result I am getting onFailure callback with Permission Denied error. So it seems, that there is some geolocation API (gears or HTML5) in the browser available, but it just does not want to ask user for granting permissions. Do you know if there is any workaround or just enable it somewhere in settings?

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• jQuery: How do I stop the page being displayed until it's been processed?

  - by Alistair Christie

  I'm using jQuery to modify the style of some pages in a large set of existing Web pages. This works, but the problem I have is that, for longer pages, the page is briefly visible with the wrong styles before the javascript kicks in and transforms the page. I'm using this kind of thing (the alerts are just to emphasize the problem): $(document).ready(function(){ ... alert("at this point the page is visible unstyled"); $('body').addClass('myStyle'); alert("now page looks like I want it to"); ... } How do I prevent the browser from displaying the page until $(document).ready(function() completes?

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• StackExchange API key

  - by user21289

  I am working on a project with the StackExchange API, the problem is at a moment I have this Exception on eclipse console: java.io.IOException: Server returned HTTP response code: 400 for URL: https://api.stackexchange.com/2.1/questions?order=desc&sort=votes&tagged=OSM&site=stackoverflow at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source) atbr.inf.pucrio.sog.StackOverflowAcessor.getQuestionsIds(StackOverflowAcessor.java:41) After verifying on the browser with the same link, I have this error message: {"error_id":502,"error_name":"throttle_violation","error_message":"too many requests from this IP, more requests available in 74089 seconds"} I am wondering if this is dur to the limited numbers of the queries per day, if it is the case, how can I do to have the key? if it is not, how can I do to resolve the problem?

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• How to find out all versions of iPad from user-agent string?

  - by User11091981

  I wanted to find out all the version's of iPad (excluding iPhone, iPod) from user agent string, currently while testing I got the following string Mozilla/5.0 (iPad; CPU OS 5_1_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9B206 Safari/7534.48.3 Question: Will the following code works fine for all the iPad's? String userAgentStr = request.getHeader("User-agent"); if (userAgentStr.contains("iPad")) { //do my logic } EDIT: I am using Dolphin browser from iPad but I am getting the following UA string: Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_2_1 like Mac OS X; en_US) AppleWebKit/533.17.9 (KHTML, like Gecko) Mobile/8C148 Safari/6533.18.5 Similarly iBrowser from iPad UA string is: Mozilla/5.0 (iPhone; CPU iPhone OS 5_1_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Mobile/9B206 So my above code is breaking...

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• getting data problem with MYSQL under linux

  - by aelshereay

  Hi all, Recently I started to use Linux (Ubuntu 9.10) instead of windows. I am working on a java web application with Spring, MYSQL with jpa. However, before to install linux I made a backup file from the database, then installed linux, installed the MYSQL Query Browser and Administrator tools, and using the Admin tool restored the backup file, then got all the tables and made a simple select statement from one of the tables and got result normally and everything seems to work just fine. There a USER table, and there's a namedQuery defined to get a user by userName, the problem is that when I pass a correct userName I still get nothing! I really don't know what is the problem! The application was working perfectly under windows! Please, can anyone help me to solve this problem? Thank you in advance.

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• Client side javascript, creation of several elements and show each asap

  - by Sirius Lampochkin

  Client side javascript code create some elements (about 50-100) in cycle: for (var i = 0; i < list.Length; i++) { var obj = document.createElement("DIV"); obj.innerHTML = "<span class=\"itemId\">" + list[i].Id + "</span><!-- some more simple code --> "; mainObj.appendChild(obj); } There is some problem with browser rendering, for example IE just freeze until he finished the cycle and then shows all elements in one time. Is there a way to show each created element separately and immediately after "appendChild()"?

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• How to deny payment via PayPal IPN?

  - by Nick

  Hello all, I need to create dynamic 'Pay Now' buttons on my site, and PayPal says the way to do this is via an HTML FORM with preset variables for the price, currency, and item of the purchase. I use PayPal IPN to notify me when a payment has complete. However, what's to stop someone from modifying the query parameters of the Pay Now button to change the price? Some people have told me to redirect the button through a PHP file that sends you to a PayPal payment page with the parameters in place, but the price could just as easily be manipulated in the Web browser's address bar. My question is, how can I deny a payment if the information I receive from PayPal's IPN service is invalid (if the price doesn't match our records)? I'm quite confused and couldn't find any documentation on what I'm looking for. Hopefully, you guys can help. Thanks!

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• ajax parameter to send correctly a variable to a specified url

  - by kawtousse

  I am trying to send data to a servlet from a js file but the servlet never received the parameter. so this is what I have: function showProject(prj) { xmlhttp=GetXmlHttpObject(); if (xmlhttp==null) { alert ("Browser does not support HTTP Request"); return; } var url="ServletxmlGenerator"; idprj = prj.options[prj.selectedIndex].value; //alert(idprj); url=url+"?idprj="+idprj; xmlhttp.onreadystatechange=stateChanged; xmlhttp.open("GET",url,true); xmlhttp.send(null); } and to capture th request it is with: public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String projectcode=request.getParameter("idprj"); System.out.println("++++projectCode:=" +projectcode); the output is like: ++++projectCode:=null Can any one explain it to me it seems to be correct but i didnot find the error.Thinks

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• grid controls for ASP.NET MVC ?

  - by MikeJ

  If you are using ASP.NET MVC how are you doing grid display? Rolled your own? Got a library from somewhere? These are some of the known grid display solutions I have found for ASP.NET MVC ASP.NET MVC Flexgrid - Has nice column layout method Code based ASP.NET MVC GridView - simple, small, clean MVC Contrib - grid from codePlex jQueryGrid - jQuery grid Datatables - jQuery plugin - believed to be section 508 compliant extJS - cross browser RIA framework - has grid support Ingrid - jQuery data grid Terlerik MVC - jQuery based grid that is GPL v2 licensed, commercial version also available If you know of anything else that you are using or know to be good, please let me know.

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• Sanitize json input to a java server

  - by morgancodes

  I'm using json to pass data between the browser and a java server. I'm using Json-lib to convert between java objects and json. I'd like to strip out susupicious looking stuff (i.e "doSomethingNasty().) from the user input while converting from json to java. I can imagine several points at which I could do this: I could examine the raw json string and strip out funny-looking stuff I could look for a way to intercept every json value on its way into the java object, and look for funny stuff there. I could traverse my new java objects immediately after reconstitution from json, look for any fields that are Strings, and stripp stuff out there. What's the best approach? Are there any technologies built for this this task that I tack tack on to what I have already?

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• HTML5 svg not working

  - by 01010011

  Hi, I'm using Chrome version 5.0.375.55 and Firefox version 3.5.9 but I can't get the HTML5 code below to display a box. <!DOCTYPE html> <!-- this tells browser, this is HTML5 --> <html> <body> <svg width="200" height="200"> <rect x="0" y="0" width="100" height="100" fill="blue" stroke="red" stroke-width="5px" rx="8" ry="8" id="myRect" class="chart" /> </svg> </body> </html> The following sites stated that my browsers support HTML5 and svg so what gives? http://caniuse.com/ http://www.html5test.com/

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• Switching/Linking to another external stylesheet in a .js file using Ruby on Rails

  - by Jake

  Im learning JQuery from a Sitepoint Book but Im trying to apply all the lessons to a Rails App. In one lesson, we are taught how to switch to a different stylesheet if the browser window is resized beyond a certain point. Here's the javascript code: if ($('body').width() > 900) { $('<link rel="stylesheet" href="wide.css" type="text/css" />') .appendTo('head'); } else { $('link[href=wide.css]').remove(); } Rails doesn't seem to want to link to the new stylesheet using 'link rel'. I've tried using the Rails helper: <%= stylesheet_link_tag 'base', :media => 'screen' %> but that doesn't work in a .js file. How do I link to an external stylesheet in a .js file using Ruby? Can I use Ruby on Rails code in a .js file? Thanks.

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• What if I have an API method and a contoller/view method with the same name in RoR?

  - by Chad Johnson

  Suppose I want to be able to view a list of products on my site by going to /product/list. Great. So this uses my 'list' view and outputs some HTML which my web browser will render. But now suppose I want to provide a REST API to my client where they can get a list of their products. So I suppose I'd have them authenticate with oAuth and then they'd call /product/list which would return a JSON array of their products. But like I said earlier, /product/list displays an HTML web page. So, I have a conflict. What is normal practice as far as providing APIs in Rails? Should I have a subdirectory, 'api', in /app/controller, and another 'product' controller? So my client would go to /api/product/list to get a list of their products? I'm a bit new to RoR, so I don't have the best grasp of the REST functionality yet, but hopefully my question makes sense.

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• Javascript Hex String to Image

  - by Gunnar Hoffman

  Hello everyone. I'll cut right to the chase. Right now I am developing a web based application. It has a PHP REST based architecture that serves up XML documents. On many of these documents attributes are hex encoded picture strings. On the client side jQuery AJAX fetches an XML document with a picture in it. I need to display said picture in some <img> tags. However my knowledge on such methods is lacking so here I am asking for help. Goal: JavaScript String variable in hex or base64 HTML displayed image. Cross browser is required, or a hack for the ones that do not support it is fine. Thanks, Gunnar

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• [HTML][jQuery] Brainfart: How to make overflow content in a div

  - by Conor

  I cant even come up with a proper subject for this one... Basically I have a box div, that when click expands to a rectangle and shows content in the new expanded area. The problem I'm having is that when I animate out the div's width, the browser wants to render the content as the box is stretching, rather than just have it placed where I need it. Initial State ____ | | |____| Clicked _________________ | Content | |_________________| How it currently renders __________ | Con | |______tent| How I want it to render: __________ | Cont|ent (overflow:hidden) |__________| Someone help me out here... total brainfart.

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• Where to place java applet policy file?

  - by makdere

  Hi all, I am working on an artificial intelligence project which is a logic game and aims two user connecting to the server on the network who acts as an Admin and then start to play one by one. In order to create connections, i have a server code which is just listening on localhost:8000 and assigning team values to the clients as they arrive. After connecting, clients make their move under Admin's control. The question is that when i try to put my code to work in the browser it fails with the following error: java.security.AccessControlException: access denied (java.net.SocketPermission 127.0.0.1:8000 connect,resolve) Even though i have created my own policy, first granting only Socket access permission to the codebase of my project folder (file:///home/xxx/projects/-), after it didnt work i granted all permissions from all codebase. I tried placing my policy file both in the home directory and in the same directory where my applet code resides. Appreciate any tips, thanks.

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• Silent Printing of PDF From Within Java

  - by Paul Reiners

  We are looking into silent printing of PDF documents from within Java. The printing will be invoked from the desktop and not through a browser so we cannot use JavaScript. PDF Renderer is an operational solution but their rendering quality is not acceptable. iText does not seem to be pluggable with the Java print service. There are some commercial Java libraries, jPDFPrint by Qoppa, JPedal, and ICEpdf which we have not tried out yet. Does anybody have any experience with PDF silent printing from Java?

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• Test For CSS3 Radial Gradient Vendor Syntax

  - by Scott Christopherson

  I'm having an issue where I'm trying to update the background gradient of an element with JavaScript based on values I specify. I tried this route: elem.style.backgroundImage = '-webkit-gradient(radial, '+x+' '+y+', 0, '+x+' '+y+', 800, from(#ccc), to(#333)), -moz-radial-gradient('+x+'px '+y+'px, circle cover, #ccc 0, #333 100%)'; Since Webkit and Gecko have two different syntaxes for CSS3 gradients, I need to specify both. However, the above code doesn't work. It works if I only have just the Gecko syntax or just the Webkit syntax, not both. I think you can check for CSS gradient support, but my question is, is there a way to check which syntax needs to be used without browser sniffing? Keep in mind that I need to set my gradients this way since the x and y coordinates of the gradient change dynamically. Hope this makes sense, thanks.

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