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• Java library for CSS cleanup

  - by ndn

  For a rich text editor that has to handle pasted HTML code from MS Office applications, I'm looking for a Java library that cleans up the content of all "style" attributes in HTML elements, so that only some CSS attributes are left: background-color border color font-family font-weight font-style list-style-type text-align text-decoration vertical-align For creating a well-formed HTML document, I can use JTidy. For HTML element transformations (removing unwanted elements), I can use http://htmlparser.sourceforge.net/ Is there anything comparable for CSS attributes?

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• Javascript DOM howto?

  - by Tom Dalenberg

  Hi, I am a javascript noob. I would like to select the second 'p' element of the div.box. How do I do this? Thanks a lot! Tom

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• Complex error handling

  - by Caspin

  I've got a particularly ornery piece of network code. I'm using asio but that really doesn't matter for this question. I assume there is no way to unbind a socket other than closing it. The problem is that open(), bind(), and listen() can all throw a system_error. So I handled the code with a simple try/catch. The code as written in broken. using namespace boost::asio; class Thing { public: ip::tcp::endpoint m_address; ip::tcp::acceptor m_acceptor; /// connect should handle all of its exceptions internally. bool connect() { try { m_acceptor.open( m_address.protocol() ); m_acceptor.set_option( tcp::acceptor::reuse_address(true) ); m_acceptor.bind( m_address ); m_acceptor.listen(); m_acceptor.async_accept( /*stuff*/ ); } catch( const boost::system::system_error& error ) { assert(acceptor.is_open()); m_acceptor.close(); return false; } return true; } /// don't call disconnect unless connect previously succeeded. void disconnect() { // other stuff needed to disconnect is ommited m_acceptor.close(); } }; The error is if the socket fails to connect it will try to close it in the catch block and throw another system_error about closing an acceptor that has never been opened. One solution is to add an if( acceptor.is_open() ) in the catch block but that tastes wrong. Kinda like mixing C-style error checking with c++ exceptions. If I where to go that route, I may as well use the non-throwing version of open(). boost::system::error_code error; acceptor.open( address.protocol, error ); if( ! error ) { try { acceptor.set_option( tcp::acceptor::reuse_address(true) ); acceptor.bind( address ); acceptor.listen(); acceptor.async_accept( /*stuff*/ ); } catch( const boost::system::system_error& error ) { assert(acceptor.is_open()); acceptor.close(); return false; } } return !error; Is there an elegant way to handle these possible exceptions using RAII and try/catch blocks? Am I just wrong headed in trying to avoid if( error condition ) style error handling when using exceptions?

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• Treeview drag and drop

  - by David Thorisson

  I'm using the jQuery droppable/dragable to reorder a treeview (made up of ul/li items) I have no problems making a element and dragging it into the tree When I define the items to be draggable, the code doesn´t work any more (the items are classed as "droppables" but the drop event won´t run) Isn't this supposed to be possible?

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• jQuery set ajax return value in form field

  - by stef

  I've always used ajax to load() the contents of a DOM element but now I'm trying set a form field value with the result of the following query: $('#form_field').load(base_url+'ajax/get_yearly_fee', { 'q_value': $(this).val(), 'client_id': $("#fee_client_add").val() }); What's the best way to do this?

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• TYPO3: Use TCA.php to build Frontend Forms?

  - by hunte

  Hi! I'm searching for a solution, to build a frontend form from the TCA.php of my TYPO3 extension. Is there any way, to select TCA.php values, from my extension Class? I want to build a select-element with values of the TCA.php file. Would be amazing, if someone could give me some advice :)

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• Silverlight - Image Not Loading from URI at Runtime!?

  - by Sootah

  I've added an image element to my Silverlight app, and while the image pulls right up when in design mode, it doesn't load at all when running the app. Code is: <Image Height="95" HorizontalAlignment="Left" Margin="12,541,0,0" Name="imgBannerAd" Stretch="Fill" VerticalAlignment="Top" Width="828" Source="http://myurl.com/images/theimage.png" /> What's the deal? I'd tried running the file via the local hard drive and localhost, neither has any effect.

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• getElementByClass().setAttribute doesn't work

  - by Syom

  why when i write document.getElementByClass('home1').setAttribute('style', 'background-image:url(img/red_menu.PNG);'); it doesn't work? i have the element with class="home1" with document.getElementById('home1')... works fine thanks EDIT: and when i wrote document.getElementByClassName('home1').setAttribute, i have a javascript error Error: document.getElementsByClassName("home1").setAttribute is not a function

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• Good event calendaring / scheduling design guide?

  - by Neil McF

  Hello, In an application I'm designing, the user has to be able to specify rather complex event scheduling (continuous time-block vs. daily time-blocks, exception date/times, recurrence patterns etc.) Does anyone know of a good design page for such a thing online? For example, I was highly impressed with this page's description of how to do database audit trails, and would love something similar. Thanks.

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• Mergesort : Revision

  - by stan

  Does merge sort work by; taking a list of values splitting it in to two take the first element of each list, the lowest value one goes in to a new list(and i guess removed from the original). comare the next two numbers - do this until one list is empty, then place the rest of the other list at the end ofthe nw list? Also, what are the ramifications of doing this on a linked list? Thanks

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• In Scala, when is (A,A)=>R not equivalent to Function2 ?

  - by Alex R

  I'm trying to define and use my own foreach function. This is in the middle of a larger block of code. But the essence of the error I'm getting is this: test_2.scala:32: error: type mismatch; found : (A, A) = Unit required: Function2 $amount.foreach( (k:A,v:A) = { How is this error conceivably possible? Isn't (A, A) => Unit always a subtype of Function2 regardless of what else might be going on in the code?

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• Try Catch - Finally in If statement, how to go on after ?

  - by user313176

  how can I do that ? void x() {.... if (...) {try {} catch (ComException com) { throw com} finally // in any case, executed fine! {...instructions.......} } else // not executed in case of exception because the finally can't embrace the //else too... but this block of code needs to be executed in any case too... {} }

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• Linux Kernel - traverse to buffer heads

  - by CodeRanger

  In the Linux kernel, is there a way to traverse down to the buffer_heads from within a module? I can see how to get to struct bio (task_struct macro: current-bio). But how can I get to the buffer heads? The buffer_head struct holds some information I'd like to obtain at any point regarding physical block numbers.

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• UIPopoverController. Is is appropriate to embed a tableViewController within?

  - by dugla

  I am doing an iPad imaging app and I am considering UIPopoverController as my workhorse user interface element. The user will spend most of their time immersed in fullscreen content (in both portrait and landscape). When the user wants to select a different piece of content I want to use UIPopoverController to handle that. Is it appropriate to embed a tableViewController in a UIPopoverController to allow in-place scrolling or am I abusing the intended use of UIPopoverController? Thanks, Doug

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• How do I ensure AJAX still works after content moved from iFrame through DOM manipulation

  - by KcYxA

  After submitting an iFrame, content with AJAX enabled functions is returned and everything works. Once I move the content out from the iFrame to the main page through DOM manipulation and remove the iFrame, AJAX stops working. How can I make it work? I grab the body content of the iFrame and move it to an outside element through .innerHTML

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• Objective C: Initalizing static variable with static method call

  - by adranale

  The Compiler claims an error saying: "initializer element is not constant", when I try to initialize a static variable inside a method with a call to a static method (with + in its definition). Anyway I can tell him that this method always returns the same value. I know this is not the same as static method, but there seems to be no constant methods in Objective-C (other than macros which won't work here because I am calling UI_USER_INTERFACE_IDIOM() from inside the method).

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• Cost of exception handlers in Python

  - by Thilo

  In another question, the accepted answer suggested replacing a (very cheap) if statement in Python code with a try/except block to improve performance. Coding style issues aside, and assuming that the exception is never triggered, how much difference does it make (performance-wise) to have an exception handler, versus not having one, versus having a compare-to-zero if-statement?

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• Locking down RAD Studio internal browser security.

  - by HMcG

  I use Firefox as my web browser, mostly for access to add-ins such as Flashblock and No-script. I noticed yesterday that the RAD Studio internal browser used for the Welcome Page etc has scripting and Active X etc enabled. Is there a way to disable scripting, or better still, block all access to non-local sources in the built-in browser?

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• Convert array of hashes to array of structs?

  - by keruilin

  Let's say I have two objects: User and Race. User has two attributes: first_name, last_name. And Race has three attributes: course, start_time, end_time. Now let's say I create an array of hashes like this: user_races = races.map{ |race| {:user = race.user, :race = race} } How do I then convert user_races into an array of structs, keeping in mind that I want to be able to access the attributes of both user and race from the struct element?

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• Suggestion for a Data Structure!

  - by Jay

  I have the following requirements for a data structure: Direct access to an element with the help of a key (Key will be an integer, range is also same as integer range) Avoid memory allocation in chunks (Allocate contigous memory for the data structure including the data) Should be able to grow the data structure size dynamically Which data structure would you suggest? Any pointers in the direction will also be of help.

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• Importing a libary into Eclipse

  - by Christian

  I want to use Lucene in my project. When I simply copy the .jar file into my project than I get the error "Note: This element neither has attached source nor attached Javadoc and hence no Javadoc could be found." How do I import a library like Lucene the right way in Eclipse?

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• Firefox add-on for examining z-indexes

  - by hekevintran

  I'm working on a fairly large site and am having trouble managing z-indexes. Is there a Firefox add-on that will look at a page and give me an ordered list of every element with a z-index declared? That would save a ton of times for the cases where a z-index was wrong or hard to find.

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• Possible to modify DOM during/before initial DOM parsing?

  - by AMO

  Is it possible to modify the DOM during or before the initial DOM parsing? Or do I have to wait until the DOM is parsed and built before interacting with it? More specifically, is it possible to hinder a script element in DOM from running using userscripts/content scripts or similar in chrome or firefox? Tried using eventListeners on DOMNodeInserted before the DOM is parsed, but these are only fired after the DOM is built.

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• D3.js transition callback on frame

  - by brenjt

  Does anyone know how I could accomplish a per frame callback for a transition with D3. Here is and example of what I am doing currently. link.transition() .duration(duration) .attr("d", diagonal) .each("end",function(e) { if(e.target.id == current) show_tooltip(e.target) }); This currently calls the anonymous function for each element at the end of the animation. I would like to call it for every frame.

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• insert objects into array.

  - by shishir.bobby

  HI all, i need to create an dynamic array, every time i add object,it should not overwrite the first element.It should keep inserting into it. regards shishir

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