[mac] Add basic TimeSpan editor

2 files changed, 70 insertions, 0 deletions

diff --git a/Xamarin.PropertyEditing.Mac/Controls/EntryPropertyEditor.cs b/Xamarin.PropertyEditing.Mac/Controls/EntryPropertyEditor.cs
index ed250c0..ff394e8 100644
--- a/Xamarin.PropertyEditing.Mac/Controls/EntryPropertyEditor.cs
+++ b/Xamarin.PropertyEditing.Mac/Controls/EntryPropertyEditor.cs
@@ -88,6 +88,24 @@ namespace Xamarin.PropertyEditing.Mac
 			get;
 		}
 
+		public override void EditingBegan (NSNotification notification)
+		{
+			NSTextField text = (NSTextField)notification.Object;
+			this.lastValid = text.StringValue;
+		}
+
+		public override bool TextShouldEndEditing (NSControl control, NSText fieldEditor)
+		{
+			if (!CanGetValue (fieldEditor.Value)) {
+				NSTextField text = (NSTextField)control;
+				text.StringValue = this.lastValid;
+				AppKitFramework.NSBeep ();
+				return false;
+			}
+
+			return true;
+		}
+
 		protected virtual T GetValue (string value)
 		{
 			if (String.IsNullOrEmpty (value))
@@ -95,5 +113,12 @@ namespace Xamarin.PropertyEditing.Mac
 
 			return (T)Convert.ChangeType (value, typeof(T));
 		}
+
+		protected virtual bool CanGetValue (string value)
+		{
+			return true;
+		}
+
+		private string lastValid;
 	}
 }
diff --git a/Xamarin.PropertyEditing.Mac/Controls/TimeSpanEditorControl.cs b/Xamarin.PropertyEditing.Mac/Controls/TimeSpanEditorControl.cs
new file mode 100644
index 0000000..7277acb
--- /dev/null
+++ b/Xamarin.PropertyEditing.Mac/Controls/TimeSpanEditorControl.cs
@@ -0,0 +1,45 @@
+using System;
+using Xamarin.PropertyEditing.Mac.Resources;
+using Xamarin.PropertyEditing.ViewModels;
+
+namespace Xamarin.PropertyEditing.Mac
+{
+	internal class TimeSpanEditorControl
+		: EntryPropertyEditor<TimeSpan>
+	{
+		public TimeSpanEditorControl (IHostResourceProvider hostResources)
+			: base (hostResources)
+		{
+		}
+
+		protected override EntryPropertyEditorDelegate<TimeSpan> CreateDelegate (PropertyViewModel<TimeSpan> viewModel)
+		{
+			return new TimeSpanDelegate (viewModel);
+		}
+
+		protected override void UpdateAccessibilityValues ()
+		{
+			base.UpdateAccessibilityValues ();
+			Entry.AccessibilityTitle = string.Format (LocalizationResources.AccessibilityTimeSpan, ViewModel.Property.Name);
+		}
+
+		private class TimeSpanDelegate
+			: EntryPropertyEditorDelegate<TimeSpan>
+		{
+			public TimeSpanDelegate (PropertyViewModel<TimeSpan> viewModel)
+				: base (viewModel)
+			{
+			}
+
+			protected override TimeSpan GetValue (string value)
+			{
+				return TimeSpan.Parse (value);
+			}
+
+			protected override bool CanGetValue (string value)
+			{
+				return TimeSpan.TryParse (value, out _);
+			}
+		}
+	}
+}