ManipulationStartedEventArgs.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Core / CSharp / System / Windows / Input / ManipulationStartedEventArgs.cs / 1305600 / ManipulationStartedEventArgs.cs
                        

                        
                            //---------------------------------------------------------------------------- 
//
// Copyright (C) Microsoft Corporation.  All rights reserved.
//
//--------------------------------------------------------------------------- 

using System; 
using System.Collections.Generic; 
using System.Diagnostics;
using System.Security; 
using System.Windows;
using System.Windows.Media;

namespace System.Windows.Input 
{
    ///  
    ///     Provides information regarding the beginning of a manipulation. 
    /// 
    public sealed class ManipulationStartedEventArgs : InputEventArgs 
    {
        /// 
        ///     Instantiates a new instance of this class.
        ///  
        internal ManipulationStartedEventArgs(
            ManipulationDevice manipulationDevice, 
            int timestamp, 
            IInputElement manipulationContainer,
            Point origin) 
            : base(manipulationDevice, timestamp)
        {
            RoutedEvent = Manipulation.ManipulationStartedEvent;
 
            ManipulationContainer = manipulationContainer;
            ManipulationOrigin = origin; 
        } 

        ///  
        ///     Invokes a handler of this event.
        /// 
        protected override void InvokeEventHandler(Delegate genericHandler, object genericTarget)
        { 
            if (genericHandler == null)
            { 
                throw new ArgumentNullException("genericHandler"); 
            }
 
            if (genericTarget == null)
            {
                throw new ArgumentNullException("genericTarget");
            } 

            if (RoutedEvent == Manipulation.ManipulationStartedEvent) 
            { 
                ((EventHandler)genericHandler)(genericTarget, this);
            } 
            else
            {
                base.InvokeEventHandler(genericHandler, genericTarget);
            } 
        }
 
        ///  
        ///     Defines the coordinate space of the other properties.
        ///  
        public IInputElement ManipulationContainer
        {
            get;
            private set; 
        }
 
        ///  
        ///     Returns the value of the origin.
        ///  
        public Point ManipulationOrigin
        {
            get;
            private set; 
        }
 
        ///  
        ///     Preempts further processing and completes the manipulation without any inertia.
        ///  
        public void Complete()
        {
            RequestedComplete = true;
            RequestedCancel = false; 
        }
 
        ///  
        ///     Method to cancel the Manipulation
        ///  
        /// A bool indicating the success of Cancel
        public bool Cancel()
        {
            RequestedCancel = true; 
            RequestedComplete = false;
            return true; 
        } 

        ///  
        ///     A handler requested that the manipulation complete.
        /// 
        internal bool RequestedComplete
        { 
            get;
            private set; 
        } 

        ///  
        ///     A handler Requested to cancel the Manipulation
        /// 
        internal bool RequestedCancel
        { 
            get;
            private set; 
        } 

        ///  
        ///     The Manipulators for this manipulation.
        /// 
        public IEnumerable Manipulators
        { 
            get
            { 
                if (_manipulators == null) 
                {
                    _manipulators = ((ManipulationDevice)Device).GetManipulatorsReadOnly(); 
                }
                return _manipulators;
            }
        } 

        private IEnumerable _manipulators; 
    } 
}

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

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