Binding properties to CustomDataTemplate - wpf

Question

I have a list of items
public List<Item> MyItems { get; set; }
displayed on the DataGrid. One column shows status "icon" which is defined by template.
Code looks something like that:
Column template [...]
<DataGridTemplateColumn Header="Status">
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<Grid Height="18" Width="35">
<Rectangle Fill="{Binding Status.Background}" />
<TextBlock Text="{Binding Status.Text}" />
</Grid>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
Data model [...]
public class Item
{
public int ItemId { get; set; }
public string Name { get; set; }
public int StatusId { get; set; }
public Status Status { get; set; }
}
public class Status
{
public int StatusId { get; set; }
public int Text { get; set; }
public Brush Background
{
get
{
//Colour logic goes here
}
}
}
I'd like to remove colour logic from the data model and put it to the resource file instead.
<DataGridTemplateColumn Header="Status" CellTemplate="{StaticResource MyCustomTemplate}" </DataGridTemplateColumn>
I hope so far I am going to right direction but at this point I am lost as I don't know how to bind Status property (or StatusId) to MyCustomTemplate.
If anyone could help my with this it would be great.
EDIT
This works fine.
<DataGridTemplateColumn Header="V" Width="25" IsReadOnly="True" >
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<ic:CloseIcon Visibility="{Binding DockStatus, Converter={StaticResource CloseIconDisplayVisibilityConverter}}" />
<ic:DockIcon Visibility="{Binding DockStatus, Converter={StaticResource DockIconDisplayVisibilityConverter}}" />
<ic:UndockIcon Visibility="{Binding DockStatus, Converter={StaticResource UndockIconDisplayVisibilityConverter}}" />
</StackPanel>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
This doesn't refresh UI when model changes (DockStatus changes)
<DataGridTemplateColumn Header="V" Width="25" IsReadOnly="True" CellEditingTemplateSelector="{StaticResource DockIconCellTemplateSelector}}">

Answer 1

If it's only about selecting the proper background colour for a specific item, or items with a specific StatusId, you could write a binding converter. The converter would simply convert an int to a Brush:
[ValueConversion(typeof(int), typeof(Brush))]
public class StatusColorConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
if (value is int)
{
int statusId = (int)value;
// create Brush from id here and return it
}
return null;
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
throw new NotSupportedException();
}
}
You would modify your Binding like this:
<Rectangle Fill="{Binding Status.StatusId, Converter={StaticResource StatusColorConverter}}" />