KeyBinding.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Core / System / Windows / Input / Command / KeyBinding.cs / 1 / KeyBinding.cs
                        

                        
                            //---------------------------------------------------------------------------- 
//
// 
//    Copyright (C) Microsoft Corporation.  All rights reserved.
//  
//
// 
// Description: The KeyBinding class is used by the developer to create Keyboard Input Bindings 
//
//                  See spec at : [....]/coreui/Specs/Commanding(new).mht 
//
//* KeyBinding class serves the purpose of Input Bindings for Keyboard Device.
//
// History: 
//  06/01/2003 : [....] - Created
//  05/01/2004 : chandra - changed to accommodate new design 
//                  (    [....]/coreui/Specs/Commanding(new).mht ) 
//---------------------------------------------------------------------------
using System; 
using System.Windows.Input;
using System.Windows;
using System.ComponentModel;
using System.Windows.Markup; 

using SR=MS.Internal.PresentationCore.SR; 
using SRID=MS.Internal.PresentationCore.SRID; 

namespace System.Windows.Input 
{
    /// 
    /// KeyBinding - Implements InputBinding (generic InputGesture-Command map)
    ///         KeyBinding acts like a map for KeyGesture and Commands. 
    ///         Most of the logic is in InputBinding and KeyGesture, this only
    ///         facilitates user  to add Key/Modifiers directly without going in 
    ///         KeyGesture path. Also it provides the KeyGestureTypeConverter 
    ///         on the Gesture property to have KeyGesture, like Ctrl+X, Alt+V
    ///         defined in Markup as Gesture="Ctrl+X" working 
    /// 
    public class KeyBinding : InputBinding
    {
        //----------------------------------------------------- 
        //
        //  Constructors 
        // 
        //-----------------------------------------------------
#region Constructor 
        /// 
        /// Constructor
        /// 
        public KeyBinding() : base() 
        {
        } 
 
        /// 
        /// Constructor 
        /// 
        /// Command associated
        /// KeyGesture associated
        public KeyBinding(ICommand command, KeyGesture gesture) : base(command, gesture) 
        {
        } 
 
        /// 
        /// Constructor 
        /// 
        /// 
        /// modifiers
        /// key 
        public KeyBinding(ICommand command, Key key, ModifierKeys modifiers) :
                            base(command, new KeyGesture(key, modifiers)) 
        { 
        }
#endregion Constructor 
        //------------------------------------------------------
        //
        //  Public Methods
        // 
        //-----------------------------------------------------
#region Public Methods 
        ///  
        /// KeyGesture Override, to ensure type-safety and provide a
        ///  TypeConverter for KeyGesture 
        /// 
        [TypeConverter(typeof(KeyGestureConverter))]
        [ValueSerializer(typeof(KeyGestureValueSerializer))]
        public override InputGesture Gesture 
        {
            get 
            { 
                return base.Gesture as KeyGesture;
            } 
            set
            {
                if (value is KeyGesture)
                { 
                    base.Gesture = value;
                } 
                else 
                {
                    throw new ArgumentException(SR.Get(SRID.InputBinding_ExpectedInputGesture, typeof(KeyGesture))); 
                }
            }
        }
 
        /// 
        /// Modifier 
        ///  
        public ModifierKeys Modifiers
        { 
            get
            {
                lock (_dataLock)
                { 
                    if (null != Gesture)
                    { 
                        return ((KeyGesture)Gesture).Modifiers; 
                    }
                    return ModifierKeys.None; 
                }
            }
            set
            { 
                lock (_dataLock)
                { 
                    if (null == Gesture) 
                    {
                        Gesture = new KeyGesture(Key.None, (ModifierKeys)value, 
                            /*validateGesture = */ false);
                    }
                    else
                    { 
                        Gesture = new KeyGesture(((KeyGesture)Gesture).Key, value,
                            /*validateGesture = */ false); 
                    } 
                }
            } 
        }

        /// 
        /// Key 
        /// 
        public Key Key 
        { 
            get
            { 
                lock (_dataLock)
                {
                    if (null != Gesture)
                    { 
                        return ((KeyGesture)Gesture).Key;
                    } 
                    return Key.None; 
                }
            } 
            set
            {
                lock (_dataLock)
                { 
                    if (null == Gesture)
                    { 
                        Gesture = new KeyGesture((Key)value, ModifierKeys.None, 
                            /*validateGesture = */ false);
                    } 
                    else
                    {
                        Gesture = new KeyGesture(value, ((KeyGesture)Gesture).Modifiers,
                            /*validateGesture = */ false); 
                    }
                } 
            } 
        }
 
#endregion Public Methods
        //------------------------------------------------------
        //
        //   Private Fields 
        //
        //------------------------------------------------------ 
    } 
 }

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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