// (c) Copyright Microsoft Corporation, 2010.

// This source is subject to the Microsoft Permissive License.

// See http://www.microsoft.com/opensource/licenses.mspx#Ms-PL.

// All other rights reserved.



using System;

using System.Collections;

using System.Diagnostics;

using System.Runtime.InteropServices;

using UIAComWrapperInternal;



namespace System.Windows.Automation

{

    public class LegacyIAccessiblePattern : BasePattern

    {

        public static readonly AutomationProperty ChildIdProperty = LegacyIAccessiblePatternIdentifiers.ChildIdProperty;

        public static readonly AutomationProperty NameProperty = LegacyIAccessiblePatternIdentifiers.NameProperty;

        public static readonly AutomationProperty ValueProperty = LegacyIAccessiblePatternIdentifiers.ValueProperty;

        public static readonly AutomationProperty DescriptionProperty = LegacyIAccessiblePatternIdentifiers.DescriptionProperty;

        public static readonly AutomationProperty RoleProperty = LegacyIAccessiblePatternIdentifiers.RoleProperty;

        public static readonly AutomationProperty StateProperty = LegacyIAccessiblePatternIdentifiers.StateProperty;

        public static readonly AutomationProperty HelpProperty = LegacyIAccessiblePatternIdentifiers.HelpProperty;

        public static readonly AutomationProperty KeyboardShortcutProperty = LegacyIAccessiblePatternIdentifiers.KeyboardShortcutProperty;

        public static readonly AutomationProperty SelectionProperty = LegacyIAccessiblePatternIdentifiers.SelectionProperty;

        public static readonly AutomationProperty DefaultActionProperty = LegacyIAccessiblePatternIdentifiers.DefaultActionProperty;

        public static readonly AutomationPattern Pattern = LegacyIAccessiblePatternIdentifiers.Pattern;



        private UIAutomationClient.IUIAutomationLegacyIAccessiblePattern _pattern;



        private LegacyIAccessiblePattern(AutomationElement el, UIAutomationClient.IUIAutomationLegacyIAccessiblePattern pattern, bool cached)

            : base(el, cached)

        {

            Debug.Assert(pattern != null);

            this._pattern = pattern;

        }



        public void Select(int flagsSelect)

        {

            try

            {

                this._pattern.Select(flagsSelect);

            }

            catch (System.Runtime.InteropServices.COMException e)

            {

                Exception newEx; if (Utility.ConvertException(e, out newEx)) { throw newEx; } else { throw; }

            }

        }



        public void DoDefaultAction()

        {

            try

            {

                this._pattern.DoDefaultAction();

            }

            catch (System.Runtime.InteropServices.COMException e)

            {

                Exception newEx; if (Utility.ConvertException(e, out newEx)) { throw newEx; } else { throw; }

            }

        }



        public void SetValue(string value)

        {

            try

            {

                this._pattern.SetValue(value);

            }

            catch (System.Runtime.InteropServices.COMException e)

            {

                Exception newEx; if (Utility.ConvertException(e, out newEx)) { throw newEx; } else { throw; }

            }

        }



        public Accessibility.IAccessible GetIAccessible()

        {

            try

            {

                return (Accessibility.IAccessible)this._pattern.GetIAccessible();

            }

            catch (System.Runtime.InteropServices.COMException e)

            {

                Exception newEx; if (Utility.ConvertException(e, out newEx)) { throw newEx; } else { throw; }

            }

        }



        internal static object Wrap(AutomationElement el, object pattern, bool cached)

        {

            return (pattern == null) ? null : new LegacyIAccessiblePattern(el, (UIAutomationClient.IUIAutomationLegacyIAccessiblePattern)pattern, cached);

        }





        public LegacyIAccessiblePatternInformation Cached

        {

            get

            {

                Utility.ValidateCached(this._cached);

                return new LegacyIAccessiblePatternInformation(this._el, true);

            }

        }



        public LegacyIAccessiblePatternInformation Current

        {

            get

            {

                return new LegacyIAccessiblePatternInformation(this._el, false);

            }

        }





        [StructLayout(LayoutKind.Sequential)]

        public struct LegacyIAccessiblePatternInformation

        {

            private AutomationElement _el;

            private bool _isCached;

            internal LegacyIAccessiblePatternInformation(AutomationElement element, bool isCached)

            {

                this._el = element;

                this._isCached = isCached;

            }

            

            public AutomationElement[] GetSelection()

            {

                return (AutomationElement[])this._el.GetPropertyValue(LegacyIAccessiblePattern.SelectionProperty, _isCached);

            }



            public int ChildId

            {

                get

                {

                    return (int)this._el.GetPropertyValue(LegacyIAccessiblePattern.ChildIdProperty, _isCached);

                }

            }



            public string DefaultAction

            {

                get

                {

                    return (string)this._el.GetPropertyValue(LegacyIAccessiblePattern.DefaultActionProperty, _isCached);

                }

            }



            public string Description

            {

                get

                {

                    return (string)this._el.GetPropertyValue(LegacyIAccessiblePattern.DescriptionProperty, _isCached);

                }

            }



            public string Help

            {

                get

                {

                    return (string)this._el.GetPropertyValue(LegacyIAccessiblePattern.HelpProperty, _isCached);

                }

            }



            public string KeyboardShortcut

            {

                get

                {

                    return (string)this._el.GetPropertyValue(LegacyIAccessiblePattern.KeyboardShortcutProperty, _isCached);

                }

            }



            public string Name

            {

                get

                {

                    return (string)this._el.GetPropertyValue(LegacyIAccessiblePattern.NameProperty, _isCached);

                }

            }



            public uint Role

            {

                get

                {

                    return Convert.ToUInt32(this._el.GetPropertyValue(LegacyIAccessiblePattern.RoleProperty, _isCached));

                }

            }



            public uint State

            {

                get

                {

                    return Convert.ToUInt32(this._el.GetPropertyValue(LegacyIAccessiblePattern.StateProperty, _isCached));

                }

            }



            public string Value

            {

                get

                {

                    return (string)this._el.GetPropertyValue(LegacyIAccessiblePattern.ValueProperty, _isCached);

                }

            }

        }

    }

}