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  • Can't get SplitLayoutPanel working - GWT + UIBinder are driving me crazy

    - by Matt H
    ... <g:VerticalPanel styleName="{style.mainVerticalPanel}"> <g:SplitLayoutPanel> <g:north size="700"> <g:VerticalPanel> <g:ScrollPanel styleName="{style.conversationPanelContainer}"> <g:FlexTable ui:field="conversationPanel" styleName="{style.conversationPanel}"></g:FlexTable> </g:ScrollPanel> <g:HorizontalPanel styleName="{style.messageTextAndSendPanel}"> <g:TextBox ui:field="messageText" styleName="{style.messageText}"></g:TextBox><g:Button ui:field="sendButton">Send</g:Button> </g:HorizontalPanel> </g:VerticalPanel> </g:north> <g:south size="300"> <g:button>TestButton</g:button> </g:south> </g:SplitLayoutPanel> </g:VerticalPanel> ... Anything look wrong with this? All I'm trying to do is make a simple split panel but whenever I run this all I get is a blank page. Without any of the SplitPanel stuff, it works fine. The same happens with DockLayoutPanel.

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  • Writing a Jeweler Rakefile that adds dependencies depending on RUBY_ENGINE (ruby or jruby)

    - by Matt Zukowski
    I have a Rakefile that includes this: Jeweler::Tasks.new do |gem| # ... gem.add_dependency('json') end The gemspec that this generates builds a gem that can't be installed on jruby because the 'json' gem is native. For jruby, this would have to be: Jeweler::Tasks.new do |gem| # ... gem.add_dependency('json-jruby') end How do I conditionally add the dependency for 'json-jruby' when RUBY_ENGINE == 'java'? It seems like my only option is to manually edit the gemspec file that jeweler generates to add the RUBY_ENGINE check. But I'd rather avoid this, since it kind of defeats the purpose of using jeweler in the first place. Any ideas?

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  • Changing data in a django modelform

    - by Matt Hampel
    I get data in from POST and validate it via this standard snippet: entry_formset = EntryFormSet(request.POST, request.FILES, prefix='entries') if entry_formset.is_valid(): .... The EntryFormSet modelform overrides a foreign key field widget to present a text field. That way, the user can enter an existing key (suggested via an Ajax live search), or enter a new key, which will be seamlessly added. I use this try-except block to test if the object exists already, and if it doesn't, I add it. entity_name = request.POST['entries-0-entity'] try: entity = Entity.objects.get(name=entity_name) except Entity.DoesNotExist: entity = Entity(name=entity_name) entity.slug = slugify(entity.name) entity.save() However, I now need to get that entity back into the entry_formset. It thinks that entries-0-entity is a string (that's how it came in); how can I directly access that value of the entry_formset and get it to take the object reference instead?

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  • EJB3 Transaction Propogation

    - by Matt S.
    I have a stateless bean something like: @Stateless public class MyStatelessBean implements MyStatelessLocal, MyStatelessRemote { @PersistenceContext(unitName="myPC") private EntityManager mgr; @TransationAttribute(TransactionAttributeType.SUPPORTED) public void processObjects(List<Object> objs) { // this method just processes the data; no need for a transaction for(Object obj : objs) { this.process(obj); } } @TransationAttribute(TransactionAttributeType.REQUIRES_NEW) public void process(Object obj) { // do some work with obj that must be in the scope of a transaction this.mgr.merge(obj); // ... this.mgr.merge(obj); // ... this.mgr.flush(); } } The typically usage then is the client would call processObjects(...), which doesn't actually interact with the entity manager. It does what it needs to do and calls process(...) individually for each object to process. The duration of process(...) is relatively short, but processObjects(...) could take a very long time to run through everything. Therefore I don't want it to maintain an open transaction. I do need the individual process(...) operations to operate within their own transaction. This should be a new transaction for every call. Lastly I'd like to keep the option open for the client to call process(...) directly. I've tried a number of different transaction types: never, not supported, supported (on processObjects) and required, requires new (on process) but I get TransactionRequiredException every time merge() is called. I've been able to make it work by splitting up the methods into two different beans: @Stateless @TransationAttribute(TransactionAttributeType.NOT_SUPPORTED) public class MyStatelessBean1 implements MyStatelessLocal1, MyStatelessRemote1 { @EJB private MyStatelessBean2 myBean2; public void processObjects(List<Object> objs) { // this method just processes the data; no need for a transaction for(Object obj : objs) { this.myBean2.process(obj); } } } @Stateless public class MyStatelessBean2 implements MyStatelessLocal2, MyStatelessRemote2 { @PersistenceContext(unitName="myPC") private EntityManager mgr; @TransationAttribute(TransactionAttributeType.REQUIRES_NEW) public void process(Object obj) { // do some work with obj that must be in the scope of a transaction this.mgr.merge(obj); // ... this.mgr.merge(obj); // ... this.mgr.flush(); } } but I'm still curious if it's possible to accomplish this in one class. It looks to me like the transaction manager only operates at the bean level, even when individual methods are given more specific annotations. So if I mark one method in a way to prevent the transaction from starting calling other methods within that same instance will also not create a transaction, no matter how they're marked? I'm using JBoss Application Server 4.2.1.GA, but non-specific answers are welcome / preferred.

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  • Invert 1 bit in C#

    - by Matt Jacobsen
    I have 1 bit in a byte (always in the lowest order position) that I'd like to invert. ie given 00000001 I'd like to get 00000000 and with 00000000 I'd like 00000001. I solved it like this: bit > 0 ? 0 : 1; I'm curious to see how else it could be done.

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  • Is there a solution for deploying IIS websites that's similar to Capistrano?

    - by Matt Ephraim
    Capistrano is a great solution for building scripts that automatically deploy a website and/or a database. But, it's also very *nix centric, and from I've read it would probably be more trouble than it's worth to get it working with a Windows server. Is there a similar solution that would allow me to deploy an ASP.Net website to an IIS server and a SQL Server database? What I'm looking for is something that would allow the same kind of flexibility that Capistrano allows, as far customizing how I want the site to be deployed, what version control system I want to pull from, how it will handle rollbacks to a previous version of a site, etc. So far, I haven't been able to find a free solution that has the same sort of functionality that Capistrano has.

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  • Anti-aliased text on HTML5's canvas element

    - by Matt Mazur
    I'm a bit confused with the way the canvas element anti-aliases text and am hoping you all can help. In the following screenshot the top "Quick Brown Fox" is an H1 element and the bottom one is a canvas element with text rendered on it. On the bottom you can see both "F"s placed side by side and zoomed in. Notice how the H1 element blends better with the background: http://jmockups.s3.amazonaws.com/canvas_rendering_both.png Here's the code I'm using to render the canvas text: var canvas = document.getElementById('canvas'); if (canvas.getContext){ var ctx = canvas.getContext('2d'); ctx.fillStyle = 'black'; ctx.font = '26px Arial'; ctx.fillText('Quick Brown Fox', 0, 26); } Is it possible to render the text on the canvas in a way so that it looks identical to the H1 element? And why are they different?

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  • What's wrong with this MySQL Stored Function?

    - by Matt
    Having trouble getting this to apply in MySQL Workbench 5.2.15 DELIMITER // CREATE DEFINER=`potts`@`%` FUNCTION `potts`.`fn_create_category_test` (test_arg VARCHAR(50)) RETURNS int BEGIN DECLARE new_id int; SET new_id = 8; RETURN new_id; END// The actual function will have a lot more between BEGIN and END but as it stands, even this 3 liner won't work. Thanks!

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  • How to handle User "confirmation" with Watir/Cucumber?

    - by Matt Darby
    I'm new to Watir and I've having a little trouble getting logged in in my tests. I use authlogic as my authentication method of choice. When a User registers, they are sent an email with a confirmation link. Clicking this link confirms their account and they can then login. The issue I'm having is how do I confirm the User when using Watir? I have so far: Given /I sign up/ do BROWSER.goto("http://localhost:3000/register") BROWSER.text_field(:id, "user_email").set("[email protected]") BROWSER.text_field(:id, "user_name").set("Foo Bar) BROWSER.text_field(:id, "user_password").set("foo bar") BROWSER.text_field(:id, "user_password_confirmation").set("foo bar") BROWSER.button(:id, "user_submit").click end Given /I am logged in via Watir/ do BROWSER.goto("http://localhost:3000/login") BROWSER.text_field(:id, "user_session_email").set("[email protected]) BROWSER.text_field(:id, "user_session_password").set("foo bar") BROWSER.button(:id, "user_session_submit").click end This correctly populates the fields and the User is saved. Now I try to confirm the User like so: Given /I am confirmed/ do User.last.confirmed! end Unfortunately this doesn't work. What am I missing?

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  • Request for the permission of type 'System.Data.Odbc.OdbcPermission.. help needed

    - by Matt
    I'm getting the following error when trying to connect to a remote mysql server. Request for the permission of type 'System.Data.Odbc.OdbcPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed. I've installed the odbc 5.1 driver, and can connect to the database using the Data Sources (ODBC) tool in Control Panel. However when I try and run my C# scrip to connect, I get the above error. I've read its something to do with trust levels or something? I don't quite understand what people were talking about though. I went to C:... Framework/v2.0.50727/CONFIG and added to the medium and high trust.config files, but that didn't help.. Can someone help me out here please? My connection string is MyConString = "DRIVER={MySQL ODBC 5.1 Driver};" + "SERVER=" + m_strHost + ";" + "PORT=3306;" + "DATABASE=" + m_strDatabase + ";" + "UID=" + m_strUserName + ";" + "PWD=" + m_strPassword + ";" + "OPTION=3;";

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  • Is there any danger in calling free() or delete instead of delete[]? [closed]

    - by Matt Joiner
    Possible Duplicate: ( POD )freeing memory : is delete[] equal to delete ? Does delete deallocate the elements beyond the first in an array? char *s = new char[n]; delete s; Does it matter in the above case seeing as all the elements of s are allocated contiguously, and it shouldn't be possible to delete only a portion of the array? For more complex types, would delete call the destructor of objects beyond the first one? Object *p = new Object[n]; delete p; How can delete[] deduce the number of Objects beyond the first, wouldn't this mean it must know the size of the allocated memory region? What if the memory region was allocated with some overhang for performance reasons? For example one could assume that not all allocators would provide a granularity of a single byte. Then any particular allocation could exceed the required size for each element by a whole element or more. For primitive types, such as char, int, is there any difference between: int *p = new int[n]; delete p; delete[] p; free p; Except for the routes taken by the respective calls through the delete-free deallocation machinery?

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  • using WP_Query with custom SQL in wordpress

    - by Matt Facer
    Hi. I am writing a plugin for wordpress and I want to create my own search. I have tried to alter the wordpress search, but what I am doing is very specific with the SQL query. I am comparing lat and long coordinates and getting posts based on that. I can display posts by using the standard wpdb query, but then I don't get the other features like paging. I'd like to be able to use my SQL statement with the WP_Query function. If I'm right in thinking, I should then be able to use the paging and other features which come from the $posts global variable. Is this right?? I've googled for hours but can't find anything for plugins outside of using args to select categories etc. I simply need to send a complete SQL command - nothing else. Many thanks....

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  • Android: Determine when an app is being finalized vs destroyed for screen orientation change

    - by Matt
    Hi all, I am relatively new to the Android world and am having some difficultly understanding how the whole screen orientation cycle works. I understand that when the orientation changes from portrait to landscape or vice versa the activity is destroyed and then re-created. Thus all the code in the onCreate function will run again. So here's my situation: I have an app that I am working on where it logs into a website, retrieves data, and displays it to the user. While this is all done in background threads, the code that starts these threads is in the onCreate function. Now, the problem lies in that whenever the user changes the screen orientation, the app will log in, retrieve the data, and display it to the user again. What I would like to do is set a boolean that tells the app if it is logged in or not so it knows whether or not it must log in when the onCreate function is called. So long as the app is in memory the HttpClient will exist and contain the cookies from logging the user in but when the app is killed by the system those will go away. So I would assume that I need to do something like setting the logged in boolean to false when the app is killed but since onDestroy is called when the screen is rotated how is this possible? I also looked into the finalize function and isFinishing() but those seem to not be working. Shorter version: How can I distinguish between when an app is being killed from memory from when an activity is being rotated and different code for each event? Any help or a point in the right direction is greatly appreciated. Thank you!

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  • WPF Animation / Processing priority

    - by Matt B
    Hi all, I have a button which has an animation (in xaml) on it's click event. Cool so far. Problem is that I also have processing occurring on the click event (so I can do stuff) - and this occurs first. How do I prioritise or re-order so that the animation takes place before any custom processing... Thanks.

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  • Python "Every Other Element" Idiom

    - by Matt Luongo
    Hey guys, I feel like I spend a lot of time writing code in Python, but not enough time creating Pythonic code. Recently I ran into a funny little problem that I thought might have an easy, idiomatic solution. Paraphrasing the original, I needed to collect every sequential pair in a list. For example, given the list [1,2,3,4,5,6], I wanted to compute [(1,2),(3,4),(5,6)]. I came up with a quick solution at the time that looked like translated Java. Revisiting the question, the best I could do was l = [1,2,3,4,5,6] [(l[2*x],l[2*x+1]) for x in range(len(l)/2)] which has the side effect of tossing out the last number in the case that the length isn't even. Is there a more idiomatic approach that I'm missing, or is this the best I'm going to get?

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  • Namespaces and Sub-Namespaces and the libraries they reference in C#

    - by Matt
    Can I have namespace somenamespace { //references functionality in DLL_1 namespace somesubnamespace { //references functionality in DLL_2 } } And if I do this, when I use just somenamespace, will it only include DLL_1 in the solution and if I use somenamespace.somesubnamespace will it include DLL_1 and DLL_2 in the solution? Or are DLL_1 and DLL_2 set on the project that contains the namespace and no matter which I use, both DLLs will be copied?

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  • Mobile App Data Syncronization

    - by Matt Rogish
    Let's say I have a mobile app that uses HTML5 SQLite DB (and/or the HTML5 key-value store). Assets (media files, PDFs, etc.) are stored locally on the mobile device. Luckily enough, the mobile device is a read-only copy of the "centralized" storage, so the mobile device won't have to propagate changes upstream. However, as the server changes assets (creates new ones, modifies existing, deletes old ones) I need to propagate those changes back to the mobile app. Assume that server changes are grouped into changesets (version number n) that contain some information (added element XYZ, deleted id = 45, etc.) and that the mobile device has limited CPU/bandwidth, so most of the processing has to take place on the server. I can think of a couple of methods to do this. All have trade-offs and at this point, I'm unsure which is the right course of action... Method 1: For change set n, store the "diff" of the current n and previous n-1. When a client with version y asks if there have been any changes, send the change sets from version y up to the current version. e.g. added item 334, contents: xxx. Deleted picture 44. Deleted PDF 11. Changed 33. added picture 99. Characteristics: Diffs take up space, although in theory would be kept small. However, all diffs must be kept around indefinitely (should a v1 app have not been updated for a year, must apply v2..v100). High latency devices (mobile apps) will incur a penalty to send lots of small files (assume cannot be zipped or tarr'd up into one file) Very few server CPU resources required, as all it does is send the client a list of files "Dumb" - if I change an item in change set 3, and change it to something else in 4, the client is going to perform both actions, even though #3 is rendered moot by #4. Or, if an asset is added in #4 and removed in #5 - the client will download a file just to delete it later. Method 2: Very similar to method 1 except on the server, do some sort of a diff between the change sets represented by the app version and server version. Package that up and send that single change set to the client. Characteristics: Client-efficient: The client only has to process one file, duplicate or irrelevant changes are stripped out. Server CPU/space intensive. The change sets must be diff'd and then written out to a file that is then sent to the client. Makes diff server scalability an issue. Possibly ways to cache the results and re-use them, but in the wild there's likely to be a lot of different versions so the diff re-use has a limit Diff algorithm is complicated. The change sets must be structured in such a way that an efficient and effective diff can be performed. Method 3: Instead of keeping diffs, write out the entire versioned asset collection to a mobile-database import file. When client requests an update, send the entire database to client and have them update their assets appropriately. Characteristics: Conceptually simple -- easy to develop and deploy Very inefficient as the client database is restored every update. If only one new thing was added, the whole database is refreshed. Server space and CPU efficient. Only the latest version DB needs kept around and the server just throws the file to the client. Others?? Thoughts? Thanks!!

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  • MySQL select using datetime, group by date only

    - by Matt
    Is is possible to select a datetime field from a MySQL table and group by the date only? I'm trying to output a list of events that happen at multiple times, grouped by the date it happened on. My table/data looks like this: (the timestamp is a datetime field) 1. 2010-03-21 18:00:00 Event1 2. 2010-03-21 18:30:00 Event2 3. 2010-03-30 13:00:00 Event3 4. 2010-03-30 14:00:00 Event4 I want to output something like this: March 21st 1800 - Event 1 1830 - Event 2 March 30th 1300 - Event 3 1400 - Event 4 Thanks!

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  • jQuery counter to count up to a target number

    - by Matt Huggins
    I'm trying to find out if anyone knows about an already existing jQuery plugin that will count up to a target number at a specified speed. For example, take a look at Google's number of MB of free storage on the Gmail homepage, under the heading that reads "Lots of space". It has a starting number in a <span> tag, and slowly counts upward every second. I'm looking for something similar, but I'd like to be able to specify: The start number The end number The amount of time it should take to get from start to end. A custom callback function that can execute when a counter is finished.

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  • Regex negative match query

    - by Matt
    Hey guys, I've got a regex issue, Im trying to ignore just the number '41', I want 4, 1, 14 etc to all match. I've got this [^\b41\b] which is effectively what I want but this also ignores all single iterations of the values 1 and 4. As an example, this matches "41", but I want it to NOT match: \b41\b

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  • Globals are bad! But should I use them in this context?

    - by Matt
    Would setting the $link to my database be one thing that I should use a GLOBAL scope for? In my setting of (lots of functions)...it seems as though having only one variable that is in the global scope would be wise. I am currently using the functions to transfer it back and forth so that way I do not have it in the global scope. But it is a bit of a hindrance to my script. Please advise.

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  • DataTables - Remove DataTables from HTML Table created in different JavaScript File

    - by Matt Green
    So I have a site I visit everyday for work. The DataTables implementation on this site is atrocious. The DataTable is applied to an HTML table that is generated when the page is rendered and then the DataTable is initialized on it. I figured this is great because I can create a little TamperMonkey script to remove the horrible DataTable and create one that functions how I need it to. The DataTable is created via inline Javascript at the end of the document body. I tried the following per the DOCs for the destory() method. // ==UserScript== // @name // @version 0.1 // @description Makes the Invoice Table more user friendly // @include URL // @require http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js // @require http://cdnjs.cloudflare.com/ajax/libs/datatables/1.10.1/js/jquery.dataTables.min.js // @copyright 2014+, Me // ==/UserScript== $(function() { var t = $('#customer_invoices').DataTable(); t.destroy(); }); It does not "remove those enhancements and return the table to its original un-enhanced state, with the data shown in the table" as stated in the docs. It does not appear to do anything. I think it is either because the table has not been Datatable initialized yet, or that I am not able to access the original DataTable initialization in a different scope. Any help is greatly appreciated as this has me banging my head on the desk.

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  • UITextView Scrolling - Artificial Limit

    - by Matt Winters
    I have a UITextView with a height of let's say 300. What I would like is when the typed text gets to the half way point, for the scrolling to start as if it were at the bottom of the textView. Basically I would like to programmatically set the point within the textView for scrolling to begin. Any ideas? Thanks.

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  • Silverlight Image Loading Question

    - by Matt
    I'm playing around with Silverlight Images and a listbox. Here's the scenario. Using WCF I grab some images out of my database and, using a custom class, add items to a listbox. It's working great right now. The images load and appear in the listbox, just like I want them to. I want to refine and improve my control just a little more so here's what I've done. <ListBox x:Name="lbMedia" Background="Transparent" ScrollViewer.HorizontalScrollBarVisibility="Disabled" ScrollViewer.VerticalScrollBarVisibility="Auto"> <ItemsControl.ItemsPanel> <ItemsPanelTemplate> <c:WrapPanel></c:WrapPanel> </ItemsPanelTemplate> </ItemsControl.ItemsPanel> <ItemsControl.ItemTemplate> <DataTemplate> <im:MediaManagerItem></im:MediaManagerItem> </DataTemplate> </ItemsControl.ItemTemplate> </ListBox> Just a simple listbox. The datatemplate is a custom control and literally it contains a contentpresenter, nothing more. Now the class that I use as the ItemSource has a Source property. Here's what it looks like. private UIElement _LoadingSource; private UIElement _Source; public UIElement Source { get { if( _Source == null ) { LoadMedia(); return new LoadingElement(); } return _Source; } set { if( !( value is Image ) && !( value is MediaElement ) ) throw new Exception( "Media Source must be an Image or MediaElement" ); _Source = value; NotifyPropertyChanged( "Source" ); } } Essentially, on the get I check if the image/video has been loaded from the server. If it hasn't I return a loading control, then I proceed to load my image. Here's the code for my LoadMedia method. private void LoadMedia() { if( _Media != null && _Media.MediaId > 0 ) { //load the media BackgroundWorker mediaLoader = new BackgroundWorker(); mediaLoader.DoWork += mediaLoader_DoWork; mediaLoader.RunWorkerCompleted += mediaLoader_RunWorkerCompleted; mediaLoader.RunWorkerAsync(); } } void mediaLoader_RunWorkerCompleted( object sender, RunWorkerCompletedEventArgs e ) { if(_LoadingSource != null) Source = _LoadingSource; } void mediaLoader_DoWork( object sender, DoWorkEventArgs e ) { string url = App.siteUrl + "download.ashx?MediaId=" + _Media.MediaId; SmartDispatcher.BeginInvoke( () => { Image img = new Image(); img.Source = new BitmapImage( new Uri( url, UriKind.Absolute ) ); _LoadingSource = img; } ); } So as the code goes, I create a new image element, and set the Uri. The images that I'm downloading take about 2-5 seconds to download. Now for the problem / fine tuning. Right now my code will check if the source is null and if it is, return a loading element, and run the background worker to get the image. Once the background worker finishes, set the source to the new downloaded image. I want to be able to set the Source property AFTER the image has fully downloaded. Right now my loading element appears for a brief second, then there's nothing for 2-5 seconds until the image finishes downloading. I want the loading elements to stick around until the image is completely ready but I'm having troubles doing this. I've tried adding a a listener to the ImageOpened event and update the Source property then, but it doesn't work. Thanks in advance.

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  • Trouble with inheritance

    - by Matt
    I'm relatively new to programming so excuse me if I get some terms wrong (I've learned the concepts, I just haven't actually used most of them). Trouble: I currently have a class I'll call Bob its parent class is Cody, Cody has method call Foo(). I want Bob to have the Foo() method as well, except with a few extra lines of code. I've attempted to do Foo() : base(), however that doesn't seem to work like. Is there some simple solution to this?

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