GridViewColumnHeaderAutomationPeer.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 / Framework / System / Windows / Automation / Peers / GridViewColumnHeaderAutomationPeer.cs / 1 / GridViewColumnHeaderAutomationPeer.cs
                        

                        
                            using System; 
using System.Collections;
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 MS.Internal; 
using MS.Win32;
 
namespace System.Windows.Automation.Peers 
{
 
    ///
    public class GridViewColumnHeaderAutomationPeer : FrameworkElementAutomationPeer, IInvokeProvider, ITransformProvider
    {
        /// 
        public GridViewColumnHeaderAutomationPeer(GridViewColumnHeader owner)
            : base(owner) 
        { 
        }
 
        ///
        override protected AutomationControlType GetAutomationControlTypeCore()
        {
            return AutomationControlType.HeaderItem; 
        }
 
        /// 
        override protected string GetClassNameCore()
        { 
            return "GridViewColumnHeader";
        }

        /// 
        override public object GetPattern(PatternInterface patternInterface)
        { 
            if (patternInterface == PatternInterface.Invoke || patternInterface == PatternInterface.Transform) 
                return this;
 
            return null;
        }

        void IInvokeProvider.Invoke() 
        {
            if (!IsEnabled()) 
                throw new ElementNotEnabledException(); 

            GridViewColumnHeader owner = (GridViewColumnHeader)Owner; 
            owner.AutomationClick();
        }

        #region ITransformProvider 

        bool ITransformProvider.CanMove { get { return false; } } 
 
        //Note: CanResize can be false if Max/MinWidth,Height has been added on GridViewColumn/ColumnHeader
        bool ITransformProvider.CanResize { get { return true; } } 
        bool ITransformProvider.CanRotate { get { return false; } }

        //Note: Don't support Move so far, if users do need this feature to reorder columns,
        //we can consider to add it later. (One concern is GVCH doesn't support reorder by moving itself) 
        void ITransformProvider.Move(double x, double y)
        { 
            throw new InvalidOperationException(SR.Get(SRID.UIA_OperationCannotBePerformed)); 
        }
 
        void ITransformProvider.Resize(double width, double height)
        {
            if (!IsEnabled())
                throw new ElementNotEnabledException(); 

            if (width < 0) 
            { 
                throw new ArgumentOutOfRangeException("width");
            } 
            if (height < 0)
            {
                throw new ArgumentOutOfRangeException("height");
            } 

            GridViewColumnHeader header = Owner as GridViewColumnHeader; 
            if (header != null) 
            {
                if (header.Column != null) 
                {
                    header.Column.Width = width;
                }
 
                header.Height = height;
            } 
        } 

        void ITransformProvider.Rotate(double degrees) 
        {
            throw new InvalidOperationException(SR.Get(SRID.UIA_OperationCannotBePerformed));
        }
 
        #endregion
 
    } 
}

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

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