PasswordBoxAutomationPeer.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 / Framework / System / Windows / Automation / Peers / PasswordBoxAutomationPeer.cs / 1305600 / PasswordBoxAutomationPeer.cs
                        

                        
                            //---------------------------------------------------------------------------- 
//
// File: PasswordBoxAutomationPeer.cs
//
// Copyright (C) Microsoft Corporation.  All rights reserved. 
//
// Description: The AutomationPeer for PasswordBox. 
// 
//---------------------------------------------------------------------------
 
using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.Security; 
using System.Text;
using System.Windows; 
using System.Windows.Automation.Provider; 
using System.Windows.Controls;
using System.Windows.Controls.Primitives; 
using System.Windows.Interop;
using System.Windows.Media;
using System.Windows.Documents;
 
using MS.Internal;
using MS.Internal.Automation; 
using MS.Win32; 

namespace System.Windows.Automation.Peers 
{
    ///
    public class PasswordBoxAutomationPeer : TextAutomationPeer, IValueProvider
    { 
        /// 
        /// Constructor 
        ///  
        /// PasswordBox for which this is an AutomationPeer
        public PasswordBoxAutomationPeer(PasswordBox owner) : base(owner) 
        {
        }

        ///  
        /// Class name for the type for which this is a peer.
        ///  
        ///  
        override protected string GetClassNameCore()
        { 
            return "PasswordBox";
        }

        ///  
        /// Type for which this is a peer.
        ///  
        ///  
        override protected AutomationControlType GetAutomationControlTypeCore()
        { 
            return AutomationControlType.Edit;
        }

        ///  
        /// Return the patterns supported by PasswordBoxAutomationPeer
        ///  
        ///  
        /// 
        override public object GetPattern(PatternInterface patternInterface) 
        {
            object returnValue = null;

            if (patternInterface == PatternInterface.Value) 
            {
                returnValue = this; 
            } 
            else if (patternInterface == PatternInterface.Text)
            { 
                if (_textPattern == null)
                {
                    _textPattern = new TextAdaptor(this, ((PasswordBox)Owner).TextContainer);
                } 

                returnValue = _textPattern; 
            } 
            else if (patternInterface == PatternInterface.Scroll)
            { 
                PasswordBox owner = (PasswordBox)Owner;
                if (owner.ScrollViewer != null)
                {
                    returnValue = owner.ScrollViewer.CreateAutomationPeer(); 
                    ((AutomationPeer)returnValue).EventsSource = this;
                } 
            } 
            else
            { 
                returnValue = base.GetPattern(patternInterface);
            }

            return returnValue; 
        }
 
        ///  
        /// Indicates whether or not this is a password control
        ///  
        /// true
        override protected bool IsPasswordCore()
        {
            return true; 
        }
 
        bool IValueProvider.IsReadOnly 
        {
            get 
            {
                return false;
            }
        } 

        string IValueProvider.Value 
        { 
            get
            { 
                throw new InvalidOperationException();
            }
        }
 
        void IValueProvider.SetValue(string value)
        { 
            if(!IsEnabled()) 
                throw new ElementNotEnabledException();
 
            PasswordBox owner = (PasswordBox)Owner;

            if (value == null)
            { 
                throw new ArgumentNullException("value");
            } 
 
            owner.Password = value;
        } 

        //
        [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)]
        internal void RaiseValuePropertyChangedEvent(string oldValue, string newValue) 
        {
            if (oldValue != newValue) 
            { 
                RaisePropertyChangedEvent(ValuePatternIdentifiers.ValueProperty, oldValue, newValue);
            } 
        }

        //
        [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)] 
        internal void RaiseIsReadOnlyPropertyChangedEvent(bool oldValue, bool newValue)
        { 
            if (oldValue != newValue) 
            {
                RaisePropertyChangedEvent(ValuePatternIdentifiers.IsReadOnlyProperty, oldValue, newValue); 
            }
        }

        ///  
        /// Gets collection of AutomationPeers for given text range.
        ///  
        internal override List GetAutomationPeersFromRange(ITextPointer start, ITextPointer end) 
        {
            return new List(); 
        }

        private TextAdaptor _textPattern;
    } 
}
 

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

Link Menu

Network programming in C#, Network Programming in VB.NET, Network Programming in .NET
This book is available now!
Buy at Amazon US or
Buy at Amazon UK