DataGridViewSelectedCellsAccessibleObject.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / WinForms / Managed / System / WinForms / DataGridViewSelectedCellsAccessibleObject.cs / 1305376 / DataGridViewSelectedCellsAccessibleObject.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

using System.Security.Permissions; 
 
namespace System.Windows.Forms
{ 
    public partial class DataGridView
    {
        private class DataGridViewSelectedCellsAccessibleObject : AccessibleObject
        { 
            DataGridView owner;
 
            public DataGridViewSelectedCellsAccessibleObject(DataGridView owner) 
            {
                this.owner = owner; 
            }

            public override string Name
            { 
                get
                { 
                    return SR.GetString(SR.DataGridView_AccSelectedCellsName); 
                }
            } 

            public override AccessibleObject Parent
            {
                [SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)] 
                get
                { 
                    return this.owner.AccessibilityObject; 
                }
            } 

            public override AccessibleRole Role
            {
                get 
                {
                    return AccessibleRole.Grouping; 
                } 
            }
 
            public override AccessibleStates State
            {
                get
                { 
                    return AccessibleStates.Selected | AccessibleStates.Selectable;
                } 
            } 

            public override string Value 
            {
                [SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)]
                get
                { 
                    return this.Name;
                } 
            } 

            public override AccessibleObject GetChild(int index) 
            {
                if (index >= 0 && index < this.owner.GetCellCount(DataGridViewElementStates.Selected))
                {
                    return this.owner.SelectedCell(index).AccessibilityObject; 
                }
                else 
                { 
                    return null;
                } 
            }

            public override int GetChildCount()
            { 
                return this.owner.GetCellCount(DataGridViewElementStates.Selected);
            } 
 
            public override AccessibleObject GetSelected()
            { 
                return this;
            }

            public override AccessibleObject GetFocused() 
            {
                if (this.owner.CurrentCell != null && this.owner.CurrentCell.Selected) 
                { 
                    return this.owner.CurrentCell.AccessibilityObject;
                } 
                else
                {
                    return null;
                } 
            }
 
            [SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)] 
            public override AccessibleObject Navigate(AccessibleNavigation navigationDirection)
            { 
                switch (navigationDirection)
                {
                    case AccessibleNavigation.FirstChild:
                        if (this.owner.GetCellCount(DataGridViewElementStates.Selected) > 0) 
                        {
                            return this.owner.SelectedCell(0).AccessibilityObject; 
                        } 
                        else
                        { 
                            return null;
                        }
                    case AccessibleNavigation.LastChild:
                        if (this.owner.GetCellCount(DataGridViewElementStates.Selected) > 0) 
                        {
                            return this.owner.SelectedCell(this.owner.GetCellCount(DataGridViewElementStates.Selected) - 1).AccessibilityObject; 
                        } 
                        else
                        { 
                            return null;
                        }
                    default:
                        { 
                            return null;
                        } 
                } 
            }
        } 
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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DataGridViewSelectedCellsAccessibleObject.cs source code in C# .NET

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