On 28 Oct 2013, at 17:52, Gerd Knops <[email protected]> wrote:
> In Interface Builder text fields you can use "Value with Pattern" to combine
> multiple properties into a single output. Alternatively in code you can do
> something like this:
>
> - (NSString *)fullName {
>
> return [NSString stringWithFormat:@"%@,
> %@",self.lastName,self.firstName];
> }
> + (NSSet *)keyPathsForValuesAffectingFullName {
>
> return [NSSet setWithObjects:@"lastName",@"firstName",nil];
> }
>
> Gerd
>
Thanks Gerd
Value with Pattern works as advertised for NSTextField.
Unfortunately I am binding to an NSPopupButton which lacks this binding.
XAML bindings, though similar in nature to Cocoa bindings, are somewhat more
flexible I think.
The following illustrates more or less what I need to emulate.
The converter (eqv to the value transformer) operates on self.name and
PeriodTypeComboBox.SelectedItem.Name
<ComboBox.ItemTemplate>
<DataTemplate>
<TextBlock>
<Run>Based on a</Run>
<Run>
<Run.Text>
<MultiBinding
Converter="{StaticResource StringReplaceConverter}" ConverterParameter="Period">
<Binding Path="Name" />
<Binding
ElementName="PeriodTypeComboBox" Path="SelectedItem.Name" />
</MultiBinding>
</Run.Text>
</Run>
</TextBlock>
</DataTemplate>
</ComboBox.ItemTemplate>
Jonathan
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