mcs/class/referencesource/System.Activities.Presentation/System.Activities.Presentation/System/Activities/Presentation/Base/Core/Internal/PropertyEditing/FromExpression/Framework/ValueEditors/ValueEditorUtils.cs

   1 // -------------------------------------------------------------------
   2 // Copyright (c) Microsoft Corporation.  All rights reserved.
   3 // -------------------------------------------------------------------
   4
   5 //Cider comment:
   6 //  - Removed class MouseCursor
   7
   8 //From \\authoring\Sparkle\Source\1.0.1083.0\Common\Source\Framework\ValueEditors
   9 namespace System.Activities.Presentation.Internal.PropertyEditing.FromExpression.Framework.ValueEditors
  10 {
  11     using System;
  12     using System.ComponentModel;
  13     using System.Runtime.InteropServices;
  14     using System.Windows;
  15     using System.Windows.Data;
  16     using System.Windows.Input;
  17     using System.Windows.Interop;
  18     using System.Windows.Media;
  19
  20     internal enum UpdateBindingType
  21     {
  22         Source,
  23         Target,
  24         Both
  25     }
  26     internal static class ValueEditorUtils
  27     {
  28         // This property determines whether the commit keys (enter and escape) are marked handled by value editors or not.  It inherits
  29         // so can be set at any point in the tree, and all ValueEditors below that point in the UI will use this behavior.
  30         public static readonly DependencyProperty HandlesCommitKeysProperty = DependencyProperty.RegisterAttached("HandlesCommitKeys", typeof(bool), typeof(ValueEditorUtils), new FrameworkPropertyMetadata(false, FrameworkPropertyMetadataOptions.Inherits));
  31
  32         public static bool GetHandlesCommitKeys(DependencyObject dependencyObject)
  33         {
  34             return (bool)dependencyObject.GetValue(ValueEditorUtils.HandlesCommitKeysProperty);
  35         }
  36
  37         public static void SetHandlesCommitKeys(DependencyObject dependencyObject, bool value)
  38         {
  39             dependencyObject.SetValue(ValueEditorUtils.HandlesCommitKeysProperty, value);
  40         }
  41
  42         public static void UpdateBinding(FrameworkElement element, DependencyProperty property, bool updateSource)
  43         {
  44             ValueEditorUtils.UpdateBinding(element, property, (updateSource ? UpdateBindingType.Both : UpdateBindingType.Target));
  45         }
  46
  47         public static void UpdateBinding(FrameworkElement element, DependencyProperty property, UpdateBindingType updateType)
  48         {
  49             BindingExpression bindingExpression = element.GetBindingExpression(property);
  50             if (bindingExpression != null)
  51             {
  52                 // If desired, push the current text value to the source of the binding.
  53                 if (updateType == UpdateBindingType.Source || updateType == UpdateBindingType.Both)
  54                 {
  55                     bindingExpression.UpdateSource();
  56                 }
  57
  58                 // Update the text from the source of the binding.
  59                 if (updateType == UpdateBindingType.Target || updateType == UpdateBindingType.Both)
  60                 {
  61                     bindingExpression.UpdateTarget();
  62                 }
  63             }
  64         }
  65
  66         public static void ExecuteCommand(ICommand command, IInputElement element, object parameter)
  67         {
  68             RoutedCommand routedCommand = command as RoutedCommand;
  69             if (routedCommand != null)
  70             {
  71                 if (routedCommand.CanExecute(parameter, element))
  72                 {
  73                     routedCommand.Execute(parameter, element);
  74                 }
  75             }
  76             else
  77             {
  78                 if (command != null && command.CanExecute(parameter))
  79                 {
  80                     command.Execute(parameter);
  81                 }
  82             }
  83         }
  84     }
  85
  86
  87 }