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New Post: What happend to to the Caliburn.ModelFramework namespace?

swordfish — Sat, 08 Dec 2012 18:16:31 GMT

For several years we're using Caliburn 1.0 in a very large desktop application.

It's seems that ViewModels these days use PropertyChangeBase, but that just for lazy people. Seriously all it's does it raising the PropertyChanged event.

ViewModels don't longer seem to have:

- Validation
- Undo support (BeginEdit, EndEdit, CancelEdit, IsDirty, etc)
- Visitor pattern (Accept)
- MetaData

Any advise how to upgrade to Caliburn 2.0 or Caliburn.Micro without loosing these features. We've build a ton of code on top ModelBase class. It may sound weird, but I believe we gain more if we stay with the Caliburn 1.x framework.

New Post: Sending Message with paramter

_Ivo_ — Mon, 30 Jul 2012 13:49:49 GMT

Hi guys,

here is the Code I have question about:

<UserControl.Resources>
        <HierarchicalDataTemplate x:Key="StrukturTemplate"
                                  ItemsSource="{Binding SubTree}">
            <TextBlock Text="{Binding StrukturName}" />
        </HierarchicalDataTemplate>
        <HierarchicalDataTemplate x:Key="StrukturBaumTemplate"
                ItemTemplate="{StaticResource StrukturTemplate}" ItemsSource="{Binding SubTree}">
            <TextBlock Text="{Binding StrukturName}" />
        </HierarchicalDataTemplate>
    </UserControl.Resources>
    
    <Grid>
        <telerik:RadTreeView ItemsSource="{Binding StrukturExplorer, Mode=TwoWay}" IsExpandOnSingleClickEnabled="True" ItemTemplate="{StaticResource StrukturBaumTemplate}" 
                             cal:Message.Attach="[Event Selected] = [Action ExecuteSelect(StrukturId)]"
                             Height="Auto" HorizontalAlignment="Left" Name="StrukturBaum" VerticalAlignment="Top" Width="300" SelectionMode="Single" />
    </Grid>

I want to send the Id of the selectedItem to the viewModel. How can I do this? StrukturId is a property in my VM.

New Post: Spring and dependency injection

Elsif — Fri, 20 Jul 2012 17:55:25 GMT

Hello,

I'm trying to develop a WPF application with Caliburn, Spring.NET NHibernate. I have it separated in several assemblies, depending on the business area (it means that I can have a folder Views and ViewModels in more than one). My bootstrapper is very simple, and as you can see, I select the assemblies that have viewmodels and views:

public class SpringBootsrapper : Bootstrapper<MainViewModel> 
    {
        protected override IServiceLocator CreateContainer()
        {
            XmlConfigurator.Configure();

            var cxt = ContextRegistry.GetContext();
            
            GenericApplicationContext context = new GenericApplicationContext(cxt);
            
            var container = new SpringAdapter(context);

            return container;
        }

        protected override IEnumerable<Assembly> SelectAssemblies()
        {
            IEnumerable<Assembly> assemblies = base.SelectAssemblies();
            IList<Assembly> ass = new List<Assembly>(assemblies);
            ass.Add(Assembly.GetAssembly(typeof(LoginViewModel)));
            return ass;
        }
}

My MainViewModel is like:

[Singleton(typeof(MainViewModel))]
    public class MainViewModel : Screen
    {
        private readonly IWindowManager windowManager;

        [ImportingConstructor]
        public MainViewModel(IWindowManager windowManager, IServiceLocator locator)
        {
            this.windowManager = windowManager;
            string[] pepe = ((SpringAdapter)locator).Context.GetObjectDefinitionNames();
            IEnumerable < LoginViewModel> logins = ((SpringAdapter)locator).GetAllInstances<LoginViewModel>();
            LoginViewModel loginWindow = IoC.Get<LoginViewModel>();
            if (loginWindow == null)
            {
                MessageBox.Show("Not exists");
            }
            else
            {
                windowManager.ShowDialog(loginWindow);
            }
        }
    }

When I start the application it comes to this constructor, but IoC is never finding LoginViewModel, but here the IWindowManager is injected.

What I am doing wrong?

The code for LoginViewModel is in another assembly:

[Export(typeof(LoginViewModel))]
public class LoginViewModel : Screen
{
    [Import]
    private IUsersService service;

    .....

}

Thanx!

New Post: Binding to ActiveItem in a View

advapi — Tue, 22 May 2012 15:20:03 GMT

Hello,

I'm tring to use Telerik's breadcrumb and I wish to bind the CurrentItem to the ActiveItem of the Conductor... Ive trived to do CurrentItem="{Binding ActiveItem} but it doesn't work...what should I do?

Thanks

New Post: Click a image and refresh the list.

yao1987 — Thu, 19 Apr 2012 08:18:27 GMT

I have a listbox, and its template has a image and a textblock control, I want to bind a click event to the image control to implement when user click the image, then get data from the database , and refresh the listbox, how to do it?

New Post: How to close dialog window from viewmodel?

arromanvk — Tue, 10 Apr 2012 14:20:40 GMT

I have ViewModel1 and View1 associated with it. I start dialog window from ViewModel2 (some another viewmodel) using IWindowManager object. The code from ViewModel2 class:

windowManager.ShowDialog(new ViewModel());

So, I have Dialog Window with View1 user control.

My answer is next - I can close that dialog window using red close button, but how to close it using my specific button (contained in View1 user control), something like "Cancel" button with close command (Command={Binding CancelCommand}), CancelCommand of course is contained in ViewModel1 class.

New Post: Castle Windsor Interceptor on Caliburn View Model

Janc1 — Mon, 20 Feb 2012 09:41:33 GMT

I would like create own aspects with Castle Windsor Interceptor and apply on View Model classes.

As I said I use Caliburn MVVM framework and on DI I use Caste Windsor. Everything works good.

For example I created simple loggging interceptors, here is:

public class LoggingInterceptor : IInterceptor
{
    public void Intercept(IInvocation invocation)
    {
        Console.Write("Log: Method Called: " + invocation.Method.Name);
        invocation.Proceed();
    }
}

This is simple View Model class - it is "tab item" :

public class TabViewModel : Screen, 
    ITabViewModel
{

}

When I configure IoC with Fluent API I would like apply this interceptor on View Model class.

   container.Register(Component
                    .For<LoggingInterceptor>()
                    .LifeStyle
                        .Singleton
                    .Named("LogAspect"));

        container.Register(Component
                    .For<ITabViewModel>()
                    .ImplementedBy<TabViewModel>()
                    .LifeStyle
                        .Transient
                    .Named("TabViewModel")
                    .Interceptors<LoggingInterceptor>());

When I tried pick view model from IoC:

var tabItem = IoC.Get<ITabViewModel>();
ActivateItem(tabItem);

I got this message:

A default view was not found for Castle.Proxies.ITabViewModelProxy.

Views searched for include: Castle.Proxies.IITabViewModelProxy

Castle.Proxies.ITabViewModelProxys.IDefaulCastle.Proxies.ITabViewModelProxys.Default

Also I tried this way for interceptor applicaion.

[Interceptor(typeof(LoggingInterceptor))]
public class TabViewModel : Screen, 
    ITabViewModel
{

}

Ok, I know that Caliburn framework match View and View Model by naming convention.
When I try pick implementation of ITabViewModel I get ITabViewModelProxy and for ITabViewModelProxy 
I didn’t register any View.
Target of proxy is TabViewModel but I think problem is with naming mismatch.
I dont want rename ViewModel because I would like configure proxies from XML files.

So what is correct way?

Thank you for help

New Post: Silverlight 5

mitchell_bu — Fri, 17 Feb 2012 20:31:00 GMT

Has anyone out there attempted to update Caliburn to support SL5? What all was involved in making the change? Moving to Micro isn't feasible for us and I'm hoping someone could point me down the right path to updating the solution.

New Post: Create custom advices with IPreProcessor, IPostProcessor, IRescue

Janc1 — Sun, 12 Feb 2012 16:10:03 GMT

Hi all,

today I little played with filters and I would like create own aspects [advices]. Something like Aspect library in Spring.NET

I created aspects for log input method parameters and output value.

public class LogInputParamsAttribute : 
        Attribute,
        IPreProcessor
    {
        public int Priority
        {
            get { return 1; }
        }

        public bool Execute(IRoutedMessage message, IInteractionNode handlingNode, 
            object[] parameters)
        {
            var sb = new StringBuilder();

            sb.AppendFormat("Action: {0}\n", message);

            foreach (var parameter in parameters)
            {
                sb.AppendFormat("{0}\n",parameter);
            }

            //this is temporary ;)
            MessageBox.Show(sb.ToString());

            return true;
        }

        public bool AffectsTriggers
        {
            get { return true; }
        }
    }

and


    public class LogOutputValueAttribute : 
        Attribute, 
        IPostProcessor
    {
        public int Priority
        {
            get { return 1; }
        }

        public void Execute(IRoutedMessage message, IInteractionNode handlingNode, MessageProcessingOutcome outcome)
        {
            var sb = new StringBuilder();

            sb.AppendFormat("Action: {0}\n", message);

            sb.AppendFormat("Output: {0}\n", outcome.Result);

            //this is temporary ;)
            MessageBox.Show(sb.ToString());
        }
    }

When my WPF app start up it call automatically method Execute in LogInputParamsAttribute but I don’t know why.
Because I used LogInputParamsAttribute on method LogParamsTest and this method is binded on button event Click.

Piece of code from VM:

        [LogInputParams]
        [LogOutputValue]
        public string LogParamsTest(string username, string password)
        {
            return string.Format("Hello {0}", username);
        }

View:

       <Button Style="{StaticResource styleButton}"
                    Content="LogParamsTest"
                    cal:Message.Attach="[Event Click]=[Action LogParamsTest(UserName.Text,Password.Text)]"
                    Grid.Row="3"/>

And my second question is: It exist way how can I get parameters name in method Execute (LogInputParamsAttribute). For example in this case object[0]=>username, object[1]=>password.

Thank you for all answers...

New Post: ExportFactoryProvider with version 1.1

theHaggis — Wed, 01 Feb 2012 15:58:22 GMT

i'm using Caliburn 1.1 and Glenn Block's ExportFactory<T> addition to MEF. But when the App Class is being created i get an {"Object reference not set to an instance of an object."} Null reference expection.

 protected override IServiceLocator CreateContainer()
        {
            var executingAssemblyFolder = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
            var pluginFolder = Path.Combine(executingAssemblyFolder, "Plugins");

            var catalog = new AggregateCatalog();
            catalog.Catalogs.Add(new AssemblyCatalog(Assembly.GetExecutingAssembly()));
            catalog.Catalogs.Add(new TypeCatalog(typeof(MessageBoxService)));
            catalog.Catalogs.Add(new TypeCatalog(typeof(QuestionViewModel)));

			var directoryCatalog = new DirectoryCatalog(pluginFolder);
            catalog.Catalogs.Add(directoryCatalog);
            var efp = new ExportFactoryProvider();
            container = new CompositionContainer(catalog, efp);
            efp.SourceProvider = container;
            
            return new MEFAdapter(container);
        }

If i remove the ExportFactoryProvider class form the CompositionContainer i don't get an error, obviously my exportfactory cobject are empty.

Anyone seen this problem before?

Regards,

theHaggis

New Post: Message Routing Problem

EisenbergEffect — Fri, 30 Dec 2011 01:28:53 GMT

Sorry that I missed this question! If I understand the issue, I think this is related to a bug deep inside Caliburn which is extremely difficult (if not impossible) to fix. It's related to the change of Action.Targets higher up in the Xaml tree than the source which change. The action still routes to the old target in some cases. I do believe that the issue is not present in Caliburn.Micro. Is there any way I can convince you to migrate to Caliburn.Micro?

New Post: MVVM Ria Services databinding issue

EisenbergEffect — Fri, 30 Dec 2011 01:06:15 GMT

You should post this in the Caliburn.Micro forums: http://caliburnmicro.codeplex.com/discussions

New Post: Binding user controls

EisenbergEffect — Fri, 30 Dec 2011 01:05:36 GMT

Hello. If you are using Caliburn.Micro, please post in that forum http://caliburnmicro.codeplex.com/discussions

New Post: CustomViewModelBinder

vts — Wed, 14 Dec 2011 10:38:24 GMT

Hi,

i would like to do the following:

I've a custom t4 template for a ef edmx which creates for each property a 'Is + "PropertyName" + Readable' and a 'Is + "PropertyName" + Writeable'

So i thought it would be cool to have a ViewModelBinder which binds the IsReadonlyProperty and the VisilityProperty automatical in the ViewModelBinder.
For this i have to get all bound FrameworkElements - and thats the problem - is there any way to get all Framework Elements which are data bound? Do i have to use the logicaltreehelper to get all controls and check every property for a binding with getbindingexpression or is there a better way?

ViewModel Example:

CustomerViewModel
-->Customer
-->Name
-->IsNameWriteable
-->IsNameReadable
-->Address
-->City
-->IsCityWriteable
--> ....
-->Save()

thx vts

New Post: Binding user controls

aqtLNDN — Sun, 20 Nov 2011 00:12:35 GMT

Hi,

I'm new to CM, so this question is a bit basic. I have a user control, "FolderSelectionControl" with a textbox and a button that opens a WinForm folder diaogue. The folder path is shown in the textbox.

[ContentProperty("DirectoryPath")]
    public partial class FolderSelectionControl : System.Windows.Controls.UserControl
    {
        public FolderSelectionControl()
        {
            InitializeComponent();
            pathTextbox.TextChanged +=new TextChangedEventHandler(pathTextbox_TextChanged);
        }

        public static readonly DependencyProperty DirectoryPathProperty = DependencyProperty.Register(
           "DirectoryPath",
           typeof(string),
           typeof(FolderSelectionControl));

        private void pathTextbox_TextChanged(object sender, TextChangedEventArgs e)
        {
            this.DirectoryPath = pathTextbox.Text;
            e.Handled = true;
            if (null != DirectoryPathChanged)
                DirectoryPathChanged(this, EventArgs.Empty);
            
        }

        public event EventHandler<EventArgs> DirectoryPathChanged;

        public string DirectoryPath
        {
            get { return (string)GetValue(DirectoryPathProperty); }
            set { SetValue(DirectoryPathProperty, value); }
        }


        private void Browse_Click(object sender, RoutedEventArgs e)
        {
            FolderBrowserDialog folderDialogue = new FolderBrowserDialog();
            if (!string.IsNullOrWhiteSpace(pathTextbox.Text))
            {
                string directory = pathTextbox.Text;
                if (Directory.Exists(directory))
                {
                    folderDialogue.SelectedPath = directory;
                }
            }
            if (DialogResult.OK != folderDialogue.ShowDialog())
                return;
            pathTextbox.Text = folderDialogue.SelectedPath;
        }

I place this control in a View, and I created a ViewModel.

<my:FolderSelectionControl cal:Bind.Model="{Binding}" HorizontalAlignment="Stretch" Margin="0,0,0,0" x:Name="DirectoryPicker" VerticalAlignment="Top" />

  public class InputFolderViewModel : PropertyChangedBase
    {
        private string _directoryPicker;
        public string DirectoryPicker
        {
            get
            { return _directoryPicker; }
            set
            { 
                _directoryPicker = value;
                NotifyOfPropertyChange(() => DirectoryPicker);
            }
        }
    }

The issue is that CM doesn't bind to the control. What is missing?

New Post: Yet another naming convention question

EisenbergEffect — Sat, 08 Oct 2011 05:01:39 GMT

You should post this in the Caliburn.Micro forums.

New Post: Yet another naming convention question

wikstromjonas — Fri, 07 Oct 2011 14:24:55 GMT

I have a View named:

Customer.Company.SilverlightApplication.Views.Administration.Application.ApplicationAdministrationView

and a viewmodel named:

Customer.Company.SilverlightApplication.ViewModels.Administration.Application.ApplicationAdministrationViewModel

both in correspinging folders in my solution.

When running the application the view is not found for the vm. Why?!

When I use the ViewLocator.NameTransformer on the full VM classname i get the resulting classname:

Customer.Company.SilverlightApplication.Views.Application.ApplicationAdministrationView

Why is the "Administration" part of the namespace removed???

New Post: Message Routing Problem

mackenziemi — Thu, 15 Sep 2011 22:19:49 GMT

Hello All

I have set up a shell application that I have been using to work on learning how to use Caliburn. Currently I am able to dynamically load up my ViewModels and select them and update the shell to show which ViewModel is currently active. I have noticed however that I have to bind any control that is also bound to is underlying ViewModel with like this:

cal:Bind.Model="{Binding SelectedViewModel}"

Where the SelectedViewModel is a property in ShellViewModel class. I have also noticed that data change events seem to be getting ignored. I think this is because the messages are going to the ShellViewModel and not to the ActiveItem or actual ViewModel that currently has focus. Am I correctly assessing this? Is there a way to resolve this?

Any information or links on where to look would be most appreciated.

Thanks MacK

New Post: TryClose() closes the view twice if a DialogResult is specified in WPF

unfug — Wed, 14 Sep 2011 17:49:57 GMT

I have not tested this in Silverlight/WP7, but I ran into an issue where the CanClose guard on my screens was always being called twice if the screen was being closed with TryClose.

After doing some investigating, it looks like this only happens when you specify a DialogResult. In the Screen.GetViewCloseAction method, when you set the value on the DialogResult property the view is automatically closed. Then it gets closed again when the close method is explicitly invoked.

I modified the Screen.GetViewCloseAction method so that it doesn't invoke the close method if the result property was set. I'm not sure if that causes any side-effects on any other platforms, but it seems to work for me.

New Post: Executing Coroutines on activation and deactivation

rmtuckerphx — Sat, 10 Sep 2011 04:31:47 GMT

How would I show a dialog from the VM's OnViewReady?

In a VM method bound to a button, I can do the following:

public IEnumerable ShowMyPopup() 
{ 
   var showMyDialog = new ShowDialog(); 
   yield return showMyDialog; 

   var myResult = showMyDialog.Dialog.Result; 
}

How would I do the same thing from OnViewReady?