CODEWITHSUNDEEP
wpf
Marisa
Marisa

Reputation: 792

Allow user to define context menu items

I'm trying to allow users of this class to define the menu context items, as in different use cases we'll need to expose different context menu items.

Source XAML 

<Grid>
    <DataGrid>
        <DataGrid.Columns>
            ...
        </DataGrid.Columns>
        <DataGrid.ContextMenu>
            <ContextMenu
               Visibility="{Binding SelectedItem, Converter={SomeConverter}}">
            </ContextMenu>
        </DataGrid.ContextMenu>
    </DataGrid>
</Grid>

How I'd like to use it:

<x:MyCollectionControl>
    <MenuItems>
        <MenuItem Header="Do Something"
                Visibility="Collapsed" />
        <MenuItem Header="Do Something Else"
                Visibility="{Binding SomeCondition}" />
    </MenuItems>
</x:MyCollectionControl>

What do I need to add to the control or view model to expose the context menu items so they can be defined where I'm using the control?

Upvotes: 0

Views: 25

Answers (2)

Marisa
Marisa

Reputation: 792

Of course, I worked out a fix about 5 minutes after posting this.

Added the following to my control code.

  [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
  public ItemCollection MenuItems => MyCollectionDataGrid.ContextMenu?.Items;

And used this to reference the control.

<trade1:MyCollectionControl x:Name="SomeDataGrid">
    <trade1:MyCollectionControl.MenuItems>
        <MenuItem Header="Do Something"
                Visibility="Collapsed" />
        <MenuItem Header="Do Something Else"
                Visibility="{Binding SomeCondition}" />
    </trade1:MyCollectionControl.MenuItems>
</trade1:MyCollectionControl>

Upvotes: 0

Mishka
Mishka

Reputation: 516

You could have the ContextMenu's ItemsSource binded to a collection property in your ViewModel.

Assuming all your ViewModels inherit from a certain Interface(your own) they could implement a getter to this collection and if the have items or not(for disabling the ContextMenu).

For anything else you will have to be more specific.

Upvotes: 1

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