XPlatform .NET UI framework (For best experience access this chat on Telegram https://t.me/Avalonia)
@Gillibald already assigned it to himself, so I think he'll try to fix it
But as usual in Open Source, there is no due date we can conform I think
ok,thanks
Hi. Got a problem with bindings for templated controls.
My control uses a check box:
<CheckBox
Classes="OptionTitle"
Content="{TemplateBinding Title}"
IsChecked="{TemplateBinding ShowOption}" />with the property declared in the backing code as:
public static readonly StyledProperty<bool> ShowOptionProperty =
AvaloniaProperty.Register<OptionTitle, bool>(nameof(ShowOption));
public bool ShowOption
{
get => GetValue(ShowOptionProperty);
set => SetValue(ShowOptionProperty, value);
}However, my binding is not receiving update notifications:
<controls:OptionTitle
ShowOption="{CompiledBinding ShowOptionX}"
Title="X" />this.WhenAnyValue(vm => vm.ShowOptionX).Subscribe(_ => ...); never fires.
If, in my VM constructor, I do ShowOptionX = true;, the WhenAnyValue observable fires just the once, but never again.
Any ideas what I'm doing wrong?
ShowOptionX
wait,
try
IsChecked="{TemplateBinding ShowOption, Mode=TwoWay}
Are you sure your VM is set?
Use CompiledBindings if you are not doing so
I don't rembmer the sytax
In Register I think
Robert
Thanks, I gave this a shot but it was still preventing the textbox from receiving input when I tried it. In any case I solved it now by making the commands unexecutable when that textbox is active. Not ideal and only works for my situation, but atleast it works around my impedement (re @timunie: Robert I found that I can disable parent key bindings if I place another one inside TextBox like:
<Window.KeyBindings>
<KeyBinding Command="{Binding DoSometingCommand}" Gesture="Ctrl+C"></KeyBinding>
</Window.KeyBindings>
<Design.DataContext>
<vm:MainWindowViewModel/>
</Design.DataContext>
<StackPanel>
<TextBox>
<TextBox.KeyBindings>
<KeyBinding Command="{Binding DoNothingCommand}" Gesture="Ctrl+C"></KeyBinding>
</TextBox.KeyBindings>
</TextBox>
<TextBlock Text="{Binding Count}"></TextBlock>
<Button />
</StackPanel>
my ViewModel:
public partial class MainWindowViewModel : ObservableObject
{
[ObservableProperty]
private int _Count;
[RelayCommand]
void DoSometing() => Count++;
[RelayCommand]
void DoNothing(){}})
It did prevent the other events from triggering so that did work ^^
I don't think I'm going to find a solution to the issue I found earlier. It really looks like without the collection class implementing non-generic IList that there's no good solutions to indexing a collection by integer index that works with both classes and structs being enumerated.
You just have to implement non-generic IList, even if you have all of the mutating methods throw exceptions.
Yeah I made a DoNothingCommand. This can also be a DoSomethingElseCommand where you provide a CommandParameter. But as you now have a solution, I think it's okay. (re @Robert: It did prevent the other events from triggering so that did work ^^)
I'm not sure if we need a way to support this somehow. So proably worth to open a feature request where this can be discussed further.
As I wrote in your ticket, also M$ did it that way. So I think it's not Avalonias fault. Anyway, all the Devs I asked agreed with your findings. It just feels like that supporting the interface is a rare case and not worth the pain. (re @RazorSharpFang: You just have to implement non-generic IList, even if you have all of the mutating methods throw exceptions.)
Just my 2 cents, not a final judgement
It looks really difficult to do this without having the
Type to be indexed also specified - which has really big implications for the inheritance hierarchy of the classes in question.I don't know if it's unreasonable to ask for the type to be displayed specified? But that has implications for the IDataTemplate implementors.
đ€·ââïž (re @timunie: Just my 2 cents, not a final judgement)
Nothing I am able to think of I like.
I think that is waht https://docs.microsoft.com/en-us/dotnet/api/system.notsupportedexception?view=net-6.0 is made for
Yea đ
Nothing to do, but implement IList and add a lot of throw statements.
Do we have a convenient way to apply TextDecorations to all text elements in ContentPresenter?
Via Styles ?
You can apply them globally in App.axaml or locally in each node
Thanks, I want to apply that in a control theme, but with a property as selector to determine whether the decoration should be applied. It's kind hard to implement with style selector. Not really specific to TextDecoration.
Hi,
I'm trying to close an avalonia app remotely.
Using Process.CloseMainWindow Method, I could successfully remotely the application on Window. But the method fail to close the application on Linux (manjaro).
Are there any alternative way to close an application on Linux?
Are you okay with it skipping all finally blocks and handlers?
E.g.: Files may be left open, stuff unsaved