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Common/DTS.Common/.svn/pristine/04/049c47072bf0f28232eacce70b8c1e2553e47788.svn-base

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+using DTS.Common.Enums;
+using DTS.Common.Enums.DASFactory;
+using System;
+using System.Windows;
+using System.Windows.Data;
+
+namespace DTS.Common.Converters
+{
+    /// <summary>
+    /// This converter will returns a visibility based on whether pretrigger should be shown or not
+    /// it should be bound to RecordingMode an optional parameter allows inverting the return
+    /// </summary>
+    public class RecordingModePreTriggerVisibilityConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
+        {
+            var showPreTrigger = true;
+            if ((value is RecordingModes mode) &&
+                (RecordingModeExtensions.IsAnActiveMode(mode) || !RecordingModeExtensions.CanProgramPreTrigger(mode)))
+            {
+                showPreTrigger = false;
+            }
+            
+            var invert = false;
+            if (bool.TrueString.Equals(parameter)) { invert = true; }
+            if (showPreTrigger)
+            {
+                return invert ? Visibility.Collapsed : Visibility.Visible;
+            }
+            else { return invert ? Visibility.Visible : Visibility.Collapsed; }
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
+        {
+            return null != value && value.Equals(Visibility.Visible) ? parameter : Binding.DoNothing;
+        }
+    }
+}