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• Render Html from a lambda in MVC

  - by Thad

  I have the following code to generate a list and will allow developers to customize the output if needed. <% Html.List<MyList>(item => item.Property).Value(item => return "<div>" + item.Property + "<br/>" + item.AnotherProperty + "</div>").Render() %> This is not ideal, how can I allow the developers to add the html similar to other controls. <% Html.List<MyList>(item => item.Property).Value(item => %> <div><%=item.Property%><br/><%=item.AnotherProperty%></div><%).Render() %> This way is much cleaner and standard with the rest of mvc.

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• Validations for a has_many/belongs_to relationship

  - by Craig Walker

  I have a Recipe model which has_many Ingredients (which in turn belongs_to Recipe). I want Ingredient to be existent dependent on Recipe; an Ingredient should never exist without a Recipe. I'm trying to enforce the presence of a valid Recipe ID in the Ingredient. I've been doing this with a validates :recipe, :presence => true (Rails 3) statement in Ingredient. This works fine if I save the Recipe before adding an Ingredient to it's ingredients collection. However, if I don't have explicit control over the saving (such as when I'm creating a Recipe and its Ingredients from a nested form) then I get an error: Ingredients recipe can't be blank I can get around this simply by dropping the presence validation on Ingredient.recipe. However, I don't particularly like this, as it means I'm working without a safety net. What is the best way to enforce existence-dependence in Rails? Things I'm considering (please comment on the wisdom of each): Adding a not-null constraint on the ingredients.recipe_id database column, and letting the database do the checking for me. A custom validation that somehow checks whether the Ingredient is in an unsaved recipe's ingredient collection (and thus can't have a recipe_id but is still considered valid).

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• Are Java GUIs always slow to update or is it just me?

  - by ChrisD

  I've just started making my first GUI application in Java and I decided to use the NetBeans IDE to do it. I think its working fine so far, except for one problem; it seems to be slow updating the content of a window. Even in very simple windows with few controls I find that when - for example - closing or resizing a window, I get the normal window border working properly but the inside is completely see through for a second. It's not the biggest deal in the world, I just find it mildly annoying.

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• Threading multiple WebBrowser in VB .net

  - by Code_Seeker

  I'm building a multiple webbrowser inside tabs( 1 predefine webbrowser control per tab) and I want them all to load at the same time or other words must run in thread. Unfortunately I feel a valid fact came from the error message that this is something not possible. Pls help me to check my simple program code below and its error in case i tried releasing 2 webbrowser controls but when I leave it to single web browser control it works fine. Any workaround? Imports System.Threading Public Class Form1 Dim mythread1 As Thread Dim mythread2 As Thread Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load mythread1 = New Thread(AddressOf mysub1) mythread2 = New Thread(AddressOf mysub2) mythread1.IsBackground = True mythread2.IsBackground = True mythread1.Start() mythread2.Start() End Sub Public Sub mysub1() Dim HTML As String WebBrowser1.Navigate("about:blank") mythread1.Abort() End Sub Public Sub mysub2() WebBrowser2.Navigate("about:blank") mythread2.Abort() End Sub

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• Possible to set filter on subform from parent form before subform data loads

  - by tbone

  I have frmParentForm with multiple controls used to build a filter for frmSubForm. On frmParentForm_Load, I am doing (simplified example): Me.sbfInvoice_List.Form.filter = "[created_on] >= #" & Me.RecentOrderDateCutoff & "#" Me.sbfInvoice_List.Form.FilterOn = True The problem is, on initial load, it seems the subform load is occurring first, so the entire table is loaded. Is there a way (in a different event perhaps) to properly set the subform filter from the parent form so it is applied before the subform does its initial data load? (The subform can exist on its own, or as a child of many different parent forms (sometimes filtered, sometimes not), so I'd rather not put some complicated hack in the subform itself to accomplish this.)

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• CSS and control name mangling in content pages

  - by flashnik

  I have a simple website with a master-page. To set properties to elements on a content page (such as Textbox) I use CSS. In designer it works well but when I launch a site a style isn't apllied to controls. The reason is simple. To say, I have a TextBox with id="TextBox1" in content page, it is placed in ContentPlaceHolder1. In CSS file I set properties for object with id #TextBox1. When I launch a site due to master page name mangling it gets an id like ctl00_ContentPlaceHolder1_TextBox1 which is not defined in CSS file included in masterpage. What is a correct solution of this problem? Hardcoding mangled name doesn't seem to be good.

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• running requestAnimationFrame from within a new object

  - by JVE999

  I'm having trouble running an animation. This is inside var ob1 = function() {};. When called, it runs for a while and then I get the error Uncaught RangeError: Maximum call stack size exceeded. However, this same structure has no problems running outside of the object. /////////////// Render the scene /////////////// this.render = function (){ renderer.render(scene,camera); if(isControls == true) controls.update(clock.getDelta()); this.animate(); //console.log(true); requestAnimationFrame(this.render()); } /////////////// Update objects /////////////// this.animate = function (){ console.log("!"); }

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• How to show content from contentPlaceholder inline

  - by H4mm3rHead

  Hi, I have a page where i in my masterpage have a toolbar with a "Home" button to the far left. This button is not in a contentplaceholder but on the page. I want to have the opportunity for derived pages to add their own controls or whatever to the toolbar to be whown after the "home" button. But how to do this? I have tried to put in a content placeholder, but it seems that i cannot get it to show inline with the other stuff, it breaks and the content of the contentplaceholder is shown below the button instead. anyone know how to solve this? /Brian

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• navigation framework in silverlight 3 skipping constructor when usercontrol is of a derived type

  - by tarren

  Hi: I am using the NavigationFramework in Silverlight 3, and am running into issues where the constructor of the UserControl in the xaml I am loading is not being called, and I believe this is because the UserControl in the xaml I am calling is actually derived from another user control. I have stepped through the debugger with specific break points and the constructor is being ignored completey. I have MyWindowBlue which is of type uctrlBaseMyWindow. The constructor for uctrlBaseMyWindow is being called when the xaml is 'navigated to' but the constructor for MyWindowBlue is being ignored. This is not the case if I add the user control via markup directly. Anyone else have this issue? The code I am using to navigate to the MyWindowBlue is this.MyContentFrame.Navigate(new Uri("/Controls/uctrlMyWindowBlue.xaml", UriKind.Relative)); Has anyone run into this or could offer any help? Thanks

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• How can I suspend \ resume the video caputre operation in v4l2 ?

  - by Ita

  Hi, I use the v4l2 api for video capture and image applying image processing algo' on each frame. I wish to be able to suspend the video capture. I see that there are 2 options for ioctling (new verb, its gonna catch) the stream. VIDIOC_STREAMON, VIDIOC_STREAMOFF will start and stop the stream. Is there a way to suspend \ resume it? Is this even necessary, or can I just use the start and stop controls with no extra processing time spent on creating the stream all over again ? Thank you for your time, Itamar

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• Is git suitable for one developer without server

  - by Shawn Mclean

  I am a single developer without another computer to backup my projects on. I'm looking into source controls and I came across git but all the setup tutorials are targeted to an external server. I used to use SourceGear Vault, but seeing that git is getting alot of attention, I might as well familiarize myself with it. I do not always have internet access. Is Git suitable for me? Can I be pointed in the right direction to set it up? Visual Studio 2008. Windows 7.

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• Event handling to detect if user clicks a 'Like' button in XFBML page

  - by Simon_Weaver

  I have a Facebook connect app / canvas IFrame app which has a Like control for a fanpage. I'd like to detect when the user clicks the Like button to be able to display additional info (a discount coupon code). I'm using the latest Javascript API but the events that can be handled doesn't seem to include detection of social widget controls. The documentation for the Like Plugin doesn't show any events. However I know its definitely possible because if I have two Like buttons on a page they both instantly update each other if I like or unlike whatever it is.

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• Can't write text into textbox in ASP.NET web app

  - by dotnetdev

  Hi, I have an ASP.NET web application. In the codebehind for the .ascx page (which I embed as below), I attempt to write a string to a textbox in a method like this: Code for embedding control: Control ctrl = Page.LoadControl("/RackRecable.ascx"); PlaceHolder1.Controls.Add(ctrl); Method to make string for inserting into textbox: string AppendDetails() { StringBuilder sb = new StringBuilder(); sb.Append("msg" + " " + textbox1.Text etc etc ); return sb.ToString(); } Called as (in codebehind event handler for button click): this.TextBox4.Text = AppendDetails(); I call it by using ATextBox.Text = AppendDetails (in the button click event handler). The textbox TextBox4 is in the designer file so I am confused why the text does not get written into this textbox (it is readonly and enabled). When stepping through, the textbox4 control will successfully show the text I want it to display in quick watch but not in the actual page, it won't. Any ideas? Thanks

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• Implementation of MVC with SQLite and NSURLConnection, use cases?

  - by user324723

  I'm interested in knowing how others have implemented/designed database & web services in their iphone app and how they simplified it for the entire application. My application is dependent on these services and I can't figure out a efficient way to use them together due to the (semi)complexity of my requirements. My past attempts on combining them haven't been completely successful or at least optimal in my mind. I'm building a database driven iphone app that uses a relational database in sqlite and consumes web services based on missing content or user interaction. Like this hasn't been done before...right? Since I am using a relational database - any web services consumed requires normalization, parsing the result and persisting it to the database before it can be displayed in a table view controller. The applications UI consists of nested(nav controller) table views where a user can select a cell and be taken to the next table view where it attempts to populate the table views data source from the database. If nothing exists in the database then it will send a request via web services to download its content, thus download - parse - persist - query - display. Since the user has the ability to request a refresh of this data it still requires the same process. Quickly describing what I've implemented and tried to run with - 1st attempt - Used a singleton web service class that handled sending web service requests, parsing the result and returning it to the table view controller via delegate protocols. Once the controller received that data it would then be responsible for persisting it to the database and re-returning the result. I didn't like the idea of only preventing the case where the app delegate selector doesn't exists(released) causing the app to crash. 2nd attempt - Used NSNotificationCenter for easy access to both database and web services but later realized it was more complex due to adding and removing observers per view(which isn't advised anyways).

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• WPF,XAML: How to set the ZIndex of a particular control to the topmost.

  - by Sudhakar Singh

  how do i set any control to the topmost of the screen. For e.g. i have a textblock in a datatemplate or a hierarchichal data template..etc... now i would like to set this textblock to the topmost on mouseover. Setting the Grid.ZIndex value to 1 in the trigger for IsMouseOver doesn't work many times. In order to do that i set the ZIndex value for all the contols to -1 in the window. it worked in one scenario but doesn't work other times. If anyone can get me the details of ZIndex and how to set the control to the topmost without worrying about the other controls, it would be of great help. Note: setting the value of ZIndex to a higher value e.g. 99999 also doesn't work.

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• Capture KeyUp event on form when child control has focus

  - by Jon B

  I need to capture the KeyUp event in my form (to toggle a "full screen mode"). Here's what I'm doing: protected override void OnKeyUp(KeyEventArgs e) { base.OnKeyUp(e); if (e.KeyCode == Keys.F12) this.ToggleFullScreen(); } private void ToggleFullScreen() { // Snazzy code goes here } This works fine, unless a control on the form has focus. In that case, I don't get the event at all (also tried OnKeyDown - no luck there either). I could handle the KeyUp event from the child control, but the controls on the form are generated dynamically, and there may be many of them - each having many children of their own. Is there any way to do this without generating event handlers for every control on the screen (which I certainly could do with a recursive function)?

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• UISegmentedControl is hidden under the titleBar

  - by shay te

  i guess i am missing something with the UISegmentedControl and auto layout. i have a TabbedApplication (UITabBarController), and i created a new UIViewController to act as tab. to the new view i added UISegmentedControl, and place it to top using auto layout. i guess i don't understand completely something , cause the UISegmentedControl is hiding under the titleBar . can u help me understand what i am missing ? thank you . import Foundation import UIKit; class ViewLikes:UIViewController { override func viewDidLoad() { super.viewDidLoad() title = "some title"; var segmentControl:UISegmentedControl = UISegmentedControl(items:["blash", "blah blah"]); segmentControl.selectedSegmentIndex = 1; segmentControl.setTranslatesAutoresizingMaskIntoConstraints(false) self.view.addSubview(segmentControl) //Set layout var viewsDict = Dictionary <String, UIView>() viewsDict["segment"] = segmentControl; //controls self.view.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|-[segment]-|", options: NSLayoutFormatOptions.AlignAllCenterX, metrics: nil, views: viewsDict)) self.view.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:|-[segment]", options: NSLayoutFormatOptions(0), metrics: nil, views: viewsDict)) } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } }

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• List replies in a winform

  - by andrew

  In my C# app I get an xml from a server that contains some replies like in a forum thread (with elements like author, time, body, title, whatever). When I get this xml, I create a new form in which i want to display these replies, and a little text box with an "add reply" button. I'd also like some edit buttons on perhaps my own replies in the reply list displayed in the form. The simplest way that came to my mind to display the replies is to put a web browser control in the form, generate a full html page in a string from the xml, and throw it in that web browser control. And under it i can put the text box with the add reply button. Everything is ok, except that i have no idea of how i could implement the edit function on my own replies (i mean i could add a link in there... but link to what) I would like to know if there is a way to get that edit event from the web browser control (my guess is i can't) or another (maybe simple/easy) idea of displaying the replies in a winform using other controls

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• Better way to kill a Form after the FormClosing event is overridden to hide rather than close?

  - by Paul Sasik

  I have a simple Windows Form that hosts property controls at runtime. To keep the window and its contents alive rather than killing it by handling the FormClosing event, cancel the event and simply hide the form. That's fine but at close of the application I need to actually close the window. I implemented the below but it feels kludgey. Is there a simpler, more clever way to handle this situation? (The form's controller calls KillForm explicitly after it receives a closing event from the main window.) Friend Class HostForm Private _hideInsteadOfClosing As Boolean = True Private Sub HostForm_FormClosing(ByVal sender As Object, ByVal e As FormClosingEventArgs) _ Handles Me.FormClosing If _hideInsteadOfClosing Then Me.Hide() e.Cancel = True End If End Sub Public Sub KillForm() _hideInsteadOfClosing = False Me.Close() End Sub End Class

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• W3C Web Content Accessibility Guidelines 1.0, which technology could I use?

  - by vtortola

  Hi, I've a project where one of the requirements is fullfil the "W3C Web Content Accessibility Guidelines 1.0 (WCAG 1.0)". I'm now considering wich technology could I use to acomplish it, but I'm a little bit confused. Silverlight would be the easiest way, but I cannot find conclusive information about if silverlight is or isn't compilant. I've seen controls pack done in javascript that looks very nice, like DHTMLX, but again the same problem, I don't know for sure. Besides, I've always read that a website should work wihthout javascript, and use it just for improve the user experience. Thanks.

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• programmatically add views to a viewstack flex

  - by dubbeat

  Hi, I'm trying to figure out how to in as3 (not mxml) add views to a view stack. For example I have a view component like so package components.screens { import mx.controls.Label; import mx.core.UIComponent; public class HomeScreen extends UIComponent { private var l:Label=new Label() public function HomeScreen() { super(); l.text="home"; addChild(l) } } } I've being trying to add it to a viewstack in the following way var myStack:ViewStack= new ViewStack(); mystack.addChild(homeScreen) This does not work. Whats the correct way? I'm aware I have to assign ID's but for now I just want to get the view in there

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• How to make HTML layout whitespace-agnostic?

  - by ssg

  If you have consecutive inline-blocks white-space becomes significant. It adds some level of space between elements. What's the "correct" way of avoiding whitespace effect to HTML layout if you want those blocks to look stuck to each other? Example: <span>a</span> <span>b</span> This renders differently than: <span>a</span><span>b</span> because of the space inbetween. I want whitespace-effect to go away without compromising HTML source code layout. I want my HTML templates to stay clean and well-indented. I think these options are ugly: 1) Tweaking text-indent, margin, padding etc. (Because it would be dependent on font-size, default white-space width etc) 2) Putting everything on a single line, next to each other. 3) Zero font-size. That would require overriding font-size in blocks, which would otherwise be inherited. 4) Possible document-wide solutions. I want the solution to stay local for a certain block of HTML. Any ideas, any obvious points which I'm missing?

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• Android - LinearLayout Horizontal with wrapping children

  - by kape123

  Is there a property to set for Android's LinearLayout that will enable it to properly wrap child controls? Meaning - I have changeable number of children and would like to lay out them horizontally like: Example: Control1, Control2, Control3, ... I do that by setting: ll.setOrientation(LinearLayout.HORIZONTAL); foreach (Child c in children) ll.addView(c); However, if I have large number of children, last one gets cuts off, instead of going to next line. Any idea how this can be fixed?

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• Custom cell and Delete/Move indicators

  - by Kamchatka

  Hello, I have a custom UITableViewCell. However, when I got in edit mode, I don't have any Delete and Move indicators appearing. The custom cell draws itself in the contentView. In layoutSubviews, I make sure there is space on the left and one the right of the contentView so that the controls can appear (if this was the problem). - (void)layoutSubviews { self.contentView.frame = CGRectMake(50, 0, self.frame.size.width - 100, sub.thumbnail.size.height + 20); } In the UITableViewController, I return YES in: - (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath { How could I solve this lack of interactivity. Is there something specific for custom cells? Thanks!

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• Cross-Browser jQuery text-zoom implementation

  - by JMC Creative

  I've got some code to increase/decrease font size. This is giving me a headache because each browser seems to implement the $.css('font-size') differently (see jquery bug). The part that's really killing me, though, is that Firefox is scaling up okay, but when I use the scale down function below, it scales up. Webkit & IE are both working as expected. Any ideas on that? I put this in a fiddle here: http://jsfiddle.net/srQ3P/1/ where you can see it working as expected, and you can see it broken in firefox at the project page: http://cumberlandme.info/residents MAJOR EDIT Sorry, the issue is not the code, it's firefox buggy behavior. After I zoom in or out with the browser controls (ctrl + plus or ctrol + minus) the js goes haywire. This doesn't happen in other browsers. This is the real issue. Any advice on that

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