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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
// Description: Windows LinkLabel Proxy
// PRESHARP: In order to avoid generating warnings about unkown message numbers and unknown pragmas.
#pragma warning disable 1634, 1691
using System;
using System.Collections;
using System.ComponentModel;
using System.Runtime.InteropServices;
using System.Windows.Automation;
using System.Windows.Automation.Provider;
using Accessibility;
using System.Windows;
using System.Windows.Input;
using MS.Win32;
namespace MS.Internal.AutomationProxies
{
// FormsLink proxy
class FormsLink : ProxyHwnd, IInvokeProvider
{
// ------------------------------------------------------
//
// Construction/destruction
//
// ------------------------------------------------------
#region Constructors
internal FormsLink (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.
internal static IRawElementProviderSimple Create (IntPtr hwnd, int idChild)
{
// Something is wrong if idChild is not zero
ArgumentOutOfRangeException.ThrowIfNotEqual(idChild, 0);
return new FormsLink(hwnd, null, idChild);
}
// Static Create method called by the event tracker system
internal static void RaiseEvents(IntPtr hwnd, int eventId, object idProp, int idObject, int idChild)
{
if (idObject != NativeMethods.OBJID_VSCROLL && idObject != NativeMethods.OBJID_HSCROLL)
{
ProxySimple wtv = new FormsLink(hwnd, null, idChild);
wtv.DispatchEvents(eventId, idProp, idObject, idChild);
}
}
#endregion Proxy Create
// ------------------------------------------------------
//
// Patterns Implementation
//
// ------------------------------------------------------
#region ProxyHwnd Interface
// Builds a list of Win32 WinEvents to process a UIAutomation Event.
// Param name="idEvent", UIAuotmation event
// Param name="cEvent"out, number of winevent set in the array
// Returns an array of Events to Set. The number of valid entries in this array pass back in cEvent
protected override WinEventTracker.EvtIdProperty[] EventToWinEvent(AutomationEvent idEvent, out int cEvent)
{
if (idEvent == InvokePattern.InvokedEvent)
{
cEvent = 1;
return new WinEventTracker.EvtIdProperty[1] { new WinEventTracker.EvtIdProperty(NativeMethods.EventSystemCaptureEnd, idEvent) };
}
return base.EventToWinEvent(idEvent, out cEvent);
}
#endregion ProxyHwnd Interface
#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()
{
Misc.SetFocus(_hwnd);
return true;
}
#endregion ProxySimple Interface
#region Invoke Pattern
// Same as clicking on an hyperlink
void IInvokeProvider.Invoke()
{
// Check that button can be clicked.
//
// This state could change anytime.
//
// Make sure that the control is enabled
if (!SafeNativeMethods.IsWindowEnabled(_hwnd))
{
throw new ElementNotEnabledException();
}
if (!SafeNativeMethods.IsWindowVisible(_hwnd))
{
throw new InvalidOperationException(SR.OperationCannotBePerformed);
}
Misc.SetFocus(_hwnd);
NativeMethods.Win32Point pt = new NativeMethods.Win32Point();
if (GetClickablePoint(out pt, false))
{
Misc.MouseClick(pt.x, pt.y);
}
}
#endregion Invoke Pattern
}
}
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