WindowsHyperlink.cs source code in C# .NET

                        Code:
                         / DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / AccessibleTech / longhorn / Automation / Win32Providers / MS / Internal / AutomationProxies / WindowsHyperlink.cs / 1 / WindowsHyperlink.cs
                        
                        
                            //---------------------------------------------------------------------------- 
//
// 
//    Copyright (C) Microsoft Corporation.  All rights reserved.
//  
//
// 
// Description: Windows Hyperlink Proxy 
//
// History: 
//  07/01/2003 : a-jeanp Created
//---------------------------------------------------------------------------

using System; 
using System.Runtime.InteropServices;
using System.ComponentModel; 
using System.Text; 
using System.Collections;
using System.Windows.Automation; 
using System.Windows.Automation.Provider;
using System.Windows;
using MS.Win32;
 
namespace MS.Internal.AutomationProxies
{ 
    // Implementation of the Hyperlink (SysLink) proxy. 
    class WindowsHyperlink: ProxyHwnd
    { 
        // -----------------------------------------------------
        //
        // Constructors
        // 
        // -----------------------------------------------------
 
        #region Constructors 

        WindowsHyperlink (IntPtr hwnd, ProxyFragment parent, int item) 
            : base( hwnd, parent, item)
        {
            // Set the strings to return properly the properties.
            _cControlType = ControlType.Hyperlink; 

            // support for events 
            _createOnEvent = new WinEventTracker.ProxyRaiseEvents(RaiseEvents); 
        }
 
        #endregion Constructors

        #region Proxy Create
 
        // Static Create method called by UIAutomation to create this proxy.
        // = 0 && GetLinkItem (HitTestInfo.item.iLink)) 
            {
                return CreateHyperlinkItem (_linkItem, HitTestInfo.item.iLink); 
            } 

            return base.ElementProviderFromPoint (x, y); 
        }

        // Returns an item corresponding to the focused element (if there is one),
        // or null otherwise. 
        internal override ProxySimple GetFocus ()
        { 
            // 
            // @
 



            for (int iCurrentItem = 0; GetLinkItem(iCurrentItem); iCurrentItem++) 
            {
                // If the item was focused... 
                if (Misc.IsBitSet(_linkItem.state, NativeMethods.LIS_FOCUSED)) 
                {
                    return CreateHyperlinkItem(_linkItem, iCurrentItem); 
                }
            }

            return null; 
        }
 
        #endregion ProxyFragment Interface 

        // ------------------------------------------------------ 
        //
        // Private Methods
        //
        // ------------------------------------------------------ 

        #region Private Methods 
 
        // Copy creator for a link or link item.
        private ProxySimple CreateHyperlinkItem(UnsafeNativeMethods.LITEM linkItem, int index) 
        {
            return new WindowsHyperlinkItem(_hwnd, this, index);
        }
 
        private bool GetLinkItem (int item)
        { 
            if (item < 0) 
            {
                return false; 
            }

            // Set the members about which we care.
            _linkItem.mask = NativeMethods.LIF_ITEMINDEX | NativeMethods.LIF_STATE; 
            _linkItem.iLink = item;
            _linkItem.state = 0; 
            _linkItem.stateMask = NativeMethods.LIS_ENABLED; 

            unsafe 
            {
                fixed (UnsafeNativeMethods.LITEM* pLinkItem = &_linkItem)
                {
                    return XSendMessage.XSend(_hwnd, NativeMethods.LM_GETITEM, IntPtr.Zero, new IntPtr(pLinkItem), sizeof(UnsafeNativeMethods.LITEM)); 
                }
            } 
        } 

        private string RemoveHTMLAnchorTag(string text) 
        {
            // If there are no anchor tag then it's ok just return it
            if (text.IndexOf("')
                {
                    inAnchorMode = false; 
                }
            } 
 
            return new string(ach, 0, dest);
        } 

        #endregion Private Methods

        // ----------------------------------------------------- 
        //
        // Private Fields 
        // 
        // ------------------------------------------------------
 
        #region Private Fields

        // Temporary variable used all over the proxy
        private UnsafeNativeMethods.LITEM _linkItem; 

        #endregion Private Fields 
 
    }
 
    // -----------------------------------------------------
    //
    //  WindowsHyperlinkItem Class
    // 
    //-----------------------------------------------------
 
    // Implementation of the PAW WindowsHyperlinkItem (SysLink) proxy. 
    class WindowsHyperlinkItem : ProxySimple, IInvokeProvider
    { 
        // -----------------------------------------------------
        //
        // Constructors
        // 
        // ------------------------------------------------------
 
        #region Constructors 

        // Constructor. 
        internal WindowsHyperlinkItem(IntPtr hwnd, ProxyFragment parent, int item)
            : base( hwnd, parent, item)
        {
            // Set the strings to return properly the properties. 
            _cControlType = ControlType.Hyperlink;
        } 
 
        #endregion Constructors
 
        //-----------------------------------------------------
        //
        //  Patterns Implementation
        // 
        //------------------------------------------------------
 
        #region ProxySimple Interface 

        // Returns a pattern interface if supported. 
        internal override object GetPatternProvider(AutomationPattern iid)
        {
            return iid == InvokePattern.Pattern ? this : null;
        } 

        // Sets the focus to this item. 
        internal override bool SetFocus() 
        {
            // 
            // Send the link an LM_SETITEM message.
            //
            // Allocate a local LITEM struct.
            UnsafeNativeMethods.LITEM linkItem = new UnsafeNativeMethods.LITEM(); 

            // Fill in the coordinates about which we care. 
            linkItem.mask = NativeMethods.LIF_ITEMINDEX | NativeMethods.LIF_STATE; 
            linkItem.iLink = _item;
            linkItem.stateMask = NativeMethods.LIS_FOCUSED; 
            linkItem.state = NativeMethods.LIS_FOCUSED;

            unsafe
            { 
                // Send the LM_SETITEM message.
                return XSendMessage.XSend(_hwnd, NativeMethods.LM_SETITEM, IntPtr.Zero, new IntPtr(&linkItem), Marshal.SizeOf(linkItem.GetType())); 
            } 
        }
 
        //Gets the localized name
        internal override string LocalizedName
        {
            get 
            {
                // Cannot get the associated with each each hyperlink (within ) 
                return ""; 
            }
        } 

        #endregion ProxySimple Interface

        #region Invoke Pattern 

        // Same as clicking on an hyperlink 
        void IInvokeProvider.Invoke() 
        {
            // Check that button can be clicked. 
            //
            // @

 

            // Make sure that the control is enabled 
            if (!SafeNativeMethods.IsWindowEnabled(_hwnd)) 
            {
                throw new ElementNotEnabledException(); 
            }

            if (!SafeNativeMethods.IsWindowVisible(_hwnd))
            { 
                throw new InvalidOperationException(SR.Get(SRID.OperationCannotBePerformed));
            } 
 
            //
            // Get the bounding rect for the window. 
            //
            NativeMethods.Win32Rect BoundingRect = NativeMethods.Win32Rect.Empty;
            if (!Misc.GetWindowRect(_hwnd, ref BoundingRect))
            { 
                return;
            } 
 
            //
            // All we really need here are the height and the width, 
            // so we don't even need to translate between screen
            // and client coordinates.
            //
            int width = BoundingRect.right - BoundingRect.left; 
            int height = BoundingRect.bottom - BoundingRect.top;
 
            // 
            // Determine the point to click.
            // 
            // @


 

 
 

 



 

 
            for (int Resolution = 10; Resolution > 0; --Resolution) 
            {
                for (int x = 1; x <= width; x += Resolution) 
                {
                    for (int y = 1; y <= height; y += Resolution)
                    {
                        // 
                        // Send the link an LM_HITTEST message.
                        // 
                        // Allocate a local hit test info struct. 
                        UnsafeNativeMethods.LHITTESTINFO HitTestInfo = new UnsafeNativeMethods.LHITTESTINFO();
 
                        // Fill in the coordinates that we want to check.
                        HitTestInfo.pt.x = x;
                        HitTestInfo.pt.y = y;
 
                        // Fill in index and state info.
                        HitTestInfo.item.mask = NativeMethods.LIF_ITEMINDEX | NativeMethods.LIF_STATE; 
                        HitTestInfo.item.iLink = 0; 
                        HitTestInfo.item.stateMask = NativeMethods.LIS_ENABLED;
                        HitTestInfo.item.state = 0; 

                        bool bGetItemResult;
                        unsafe
                        { 
                            // Send the LM_HITTEST message.
                            bGetItemResult = XSendMessage.XSend(_hwnd, NativeMethods.LM_HITTEST, IntPtr.Zero, new IntPtr(&HitTestInfo), Marshal.SizeOf(HitTestInfo.GetType())); 
                        } 

                        if (bGetItemResult == true && HitTestInfo.item.iLink == _item) 
                        {
                            //
                            // N.B. [SEdmison]:
                            // This multiplication is essentially just 
                            // a left shift by one word's width; in
                            // Win32 I'd just use my trusty MAKELONG macro, 
                            // but C# doesn't give me that option. 
                            //
                            Misc.ProxySendMessage(_hwnd, NativeMethods.WM_LBUTTONDOWN, IntPtr.Zero, NativeMethods.Util.MAKELPARAM(x, y)); 
                            Misc.ProxySendMessage(_hwnd, NativeMethods.WM_LBUTTONUP, IntPtr.Zero, NativeMethods.Util.MAKELPARAM(x, y));
                            return;
                        }
                    } 
                }
            } 
         } 

        #endregion 

    }
}

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