diff options
Diffstat (limited to 'Xamarin.Forms.Platform.UAP/FormsCommandBar.cs')
| -rw-r--r-- | Xamarin.Forms.Platform.UAP/FormsCommandBar.cs | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/Xamarin.Forms.Platform.UAP/FormsCommandBar.cs b/Xamarin.Forms.Platform.UAP/FormsCommandBar.cs new file mode 100644 index 00000000..2ca665af --- /dev/null +++ b/Xamarin.Forms.Platform.UAP/FormsCommandBar.cs @@ -0,0 +1,37 @@ +using Windows.Foundation.Collections; +using Windows.UI.Xaml; +using Windows.UI.Xaml.Controls; + +namespace Xamarin.Forms.Platform.UWP +{ + public class FormsCommandBar : CommandBar + { + Windows.UI.Xaml.Controls.Button _moreButton; + + public FormsCommandBar() + { + PrimaryCommands.VectorChanged += OnCommandsChanged; + SecondaryCommands.VectorChanged += OnCommandsChanged; + } + + protected override void OnApplyTemplate() + { + base.OnApplyTemplate(); + _moreButton = GetTemplateChild("MoreButton") as Windows.UI.Xaml.Controls.Button; + UpdateMore(); + } + + void OnCommandsChanged(IObservableVector<ICommandBarElement> sender, IVectorChangedEventArgs args) + { + UpdateMore(); + } + + void UpdateMore() + { + if (_moreButton == null) + return; + + _moreButton.Visibility = PrimaryCommands.Count > 0 || SecondaryCommands.Count > 0 ? Visibility.Visible : Visibility.Collapsed; + } + } +}
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