Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / wpf / src / Core / CSharp / System / Windows / Input / InputProcessorProfiles.cs / 1 / InputProcessorProfiles.cs
//----------------------------------------------------------------------------
//
//
// Copyright (C) Microsoft Corporation. All rights reserved.
//
//
//
// Description: Creates ITfInputProcessorProfiles instances.
//
// History:
// 07/30/2003 : yutakas - ported from dotnet tree.
//
//---------------------------------------------------------------------------
using System;
using System.Runtime.InteropServices;
using System.Security.Permissions;
using System.Threading;
using System.Security;
using MS.Win32;
using MS.Internal;
using System.Diagnostics;
using System.Globalization;
using System.Collections;
namespace System.Windows.Input
{
//-----------------------------------------------------
//
// InputProcessorProfiles class
//
//-----------------------------------------------------
///
/// The InputProcessorProfiles class is always associated with
/// hwndInputLanguage class.
///
internal class InputProcessorProfiles
{
//------------------------------------------------------
//
// Constructors
//
//-----------------------------------------------------
///
/// InputProcessorProfiles Constructor;
///
/// Critical - as this sets the value for _ipp.
/// Safe - as this just initializes it to null.
[SecurityCritical, SecurityTreatAsSafe]
internal InputProcessorProfiles()
{
// _ipp is a ValueType, hence no need for new.
_ipp.Value = null;
_cookie = UnsafeNativeMethods.TF_INVALID_COOKIE;
}
//------------------------------------------------------
//
// Internal Methods
//
//------------------------------------------------------
#region Internal Methods
///
/// Initialize an interface and notify sink.
///
///
/// Critical - calls critical method (inputprocessorprofilesload)
/// calls Critical setter on _ipp.Value
///
[SecurityCritical]
internal bool Initialize(object o)
{
Debug.Assert(Thread.CurrentThread.GetApartmentState() == ApartmentState.STA, "Initialize called on MTA thread!");
Debug.Assert(_ipp.Value == null, "Initialize called twice");
_ipp.Value = InputProcessorProfilesLoader.Load();
if (_ipp.Value == null)
{
return false;
}
AdviseNotifySink(o);
return true;
}
///
/// Initialize an interface and notify sink.
///
///
/// Critical - as this calls Marshal.ReleaseComObject(), which has a LinkDemand
/// Also calls setter for _ipp.Value.
/// Safe - as the worst that would happen is NullReference exception when _ipp is accessed.
/// Setting _ipp.Value to null is safe.
///
[SecurityCritical, SecurityTreatAsSafe]
internal void Uninitialize()
{
Debug.Assert(_ipp.Value != null, "Uninitialize called without initializing");
UnadviseNotifySink();
Marshal.ReleaseComObject(_ipp.Value);
_ipp.Value = null;
}
#endregion Internal Methods
//-----------------------------------------------------
//
// Internal Properties
//
//------------------------------------------------------
///
/// Get the current input language of the current thread.
///
///
/// Critical - calls unmanaged code to set the input language
/// TreatAsSafe - it is OK to set the input language, APIs check
/// to make sure the lang is available.
///
internal short CurrentInputLanguage
{
[SecurityCritical, SecurityTreatAsSafe]
set
{
if (_ipp.Value != null)
{
if (_ipp.Value.ChangeCurrentLanguage(value) != 0)
{
//
// Under WinXP or W2K3, ITfInputProcessorProfiles::ChangeCurrentLanguage() fails
// if there is no thread manager in the current thread. This is Cicero's bug and fixed
// for Longhorn.
// We need to try ActivateKeyboardLayout() for the case.
//
IntPtr[] hklList = null;
int count = (int)SafeNativeMethods.GetKeyboardLayoutList(0, null);
if (count > 1)
{
hklList = new IntPtr[count];
count = SafeNativeMethods.GetKeyboardLayoutList(count, hklList);
int i;
for (i = 0; (i < hklList.Length) && (i < count); i++)
{
if (value == (short)hklList[i])
{
SafeNativeMethods.ActivateKeyboardLayout(new HandleRef(this,hklList[i]), 0);
break;
}
}
}
}
}
}
}
///
/// Get the list of the input languages that are available in the
/// current thread.
///
///
/// Critical - calls unmanaged code to query the languages on the system
/// TreatAsSafe - it is OK to disclose the available languages on the system
///
internal ArrayList InputLanguageList
{
[SecurityCritical, SecurityTreatAsSafe]
get
{
int nCount;
IntPtr langids;
// ITfInputProcessorProfiles::GetLanguageList returns the pointer that was allocated by
// CoTaskMemAlloc().
_ipp.Value.GetLanguageList(out langids, out nCount);
ArrayList arrayLang = new ArrayList();
int sizeOfShort = Marshal.SizeOf(typeof(short));
for (int i = 0; i < nCount; i++)
{
// Unmarshal each langid from short array.
short langid = (short)Marshal.PtrToStructure((IntPtr)((Int64)langids + sizeOfShort * i), typeof(short));
arrayLang.Add(new CultureInfo(langid));
}
// Call CoTaskMemFree().
Marshal.FreeCoTaskMem(langids);
return arrayLang;
}
}
//-----------------------------------------------------
//
// Private Methods
//
//-----------------------------------------------------
///
/// This advices the input language notify sink to
/// ITfInputProcessorProfile.
///
///
/// Critical: This calls into ITfSource which is an interop COM call
///
[SecurityCritical]
private void AdviseNotifySink(object o)
{
Debug.Assert(_cookie == UnsafeNativeMethods.TF_INVALID_COOKIE, "Cookie is already set.");
UnsafeNativeMethods.ITfSource source = _ipp.Value as UnsafeNativeMethods.ITfSource;
// workaround because I can't pass a ref to a readonly constant
Guid guid = UnsafeNativeMethods.IID_ITfLanguageProfileNotifySink;
source.AdviseSink(ref guid, o, out _cookie);
}
///
/// This unadvises the sink.
///
///
/// Critical - As this elevates to invoke UnadviseSink on ITfSource.
/// Safe - as the worst that'll happen is that we'll lose some text framework notifications.
/// Note that _ipp is marked SecurityCritical for set.
///
[SecurityCritical, SecurityTreatAsSafe]
private void UnadviseNotifySink()
{
Debug.Assert(_cookie != UnsafeNativeMethods.TF_INVALID_COOKIE, "Cookie is not set.");
UnsafeNativeMethods.ITfSource source = _ipp.Value as UnsafeNativeMethods.ITfSource;
source.UnadviseSink(_cookie);
_cookie = UnsafeNativeMethods.TF_INVALID_COOKIE;
}
//-----------------------------------------------------
//
// Private Fields
//
//------------------------------------------------------
// The reference to ITfInputProcessorProfile.
private SecurityCriticalDataForSet _ipp;
// The cookie for the advised sink.
private int _cookie;
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
//----------------------------------------------------------------------------
//
//
// Copyright (C) Microsoft Corporation. All rights reserved.
//
//
//
// Description: Creates ITfInputProcessorProfiles instances.
//
// History:
// 07/30/2003 : yutakas - ported from dotnet tree.
//
//---------------------------------------------------------------------------
using System;
using System.Runtime.InteropServices;
using System.Security.Permissions;
using System.Threading;
using System.Security;
using MS.Win32;
using MS.Internal;
using System.Diagnostics;
using System.Globalization;
using System.Collections;
namespace System.Windows.Input
{
//-----------------------------------------------------
//
// InputProcessorProfiles class
//
//-----------------------------------------------------
///
/// The InputProcessorProfiles class is always associated with
/// hwndInputLanguage class.
///
internal class InputProcessorProfiles
{
//------------------------------------------------------
//
// Constructors
//
//-----------------------------------------------------
///
/// InputProcessorProfiles Constructor;
///
/// Critical - as this sets the value for _ipp.
/// Safe - as this just initializes it to null.
[SecurityCritical, SecurityTreatAsSafe]
internal InputProcessorProfiles()
{
// _ipp is a ValueType, hence no need for new.
_ipp.Value = null;
_cookie = UnsafeNativeMethods.TF_INVALID_COOKIE;
}
//------------------------------------------------------
//
// Internal Methods
//
//------------------------------------------------------
#region Internal Methods
///
/// Initialize an interface and notify sink.
///
///
/// Critical - calls critical method (inputprocessorprofilesload)
/// calls Critical setter on _ipp.Value
///
[SecurityCritical]
internal bool Initialize(object o)
{
Debug.Assert(Thread.CurrentThread.GetApartmentState() == ApartmentState.STA, "Initialize called on MTA thread!");
Debug.Assert(_ipp.Value == null, "Initialize called twice");
_ipp.Value = InputProcessorProfilesLoader.Load();
if (_ipp.Value == null)
{
return false;
}
AdviseNotifySink(o);
return true;
}
///
/// Initialize an interface and notify sink.
///
///
/// Critical - as this calls Marshal.ReleaseComObject(), which has a LinkDemand
/// Also calls setter for _ipp.Value.
/// Safe - as the worst that would happen is NullReference exception when _ipp is accessed.
/// Setting _ipp.Value to null is safe.
///
[SecurityCritical, SecurityTreatAsSafe]
internal void Uninitialize()
{
Debug.Assert(_ipp.Value != null, "Uninitialize called without initializing");
UnadviseNotifySink();
Marshal.ReleaseComObject(_ipp.Value);
_ipp.Value = null;
}
#endregion Internal Methods
//-----------------------------------------------------
//
// Internal Properties
//
//------------------------------------------------------
///
/// Get the current input language of the current thread.
///
///
/// Critical - calls unmanaged code to set the input language
/// TreatAsSafe - it is OK to set the input language, APIs check
/// to make sure the lang is available.
///
internal short CurrentInputLanguage
{
[SecurityCritical, SecurityTreatAsSafe]
set
{
if (_ipp.Value != null)
{
if (_ipp.Value.ChangeCurrentLanguage(value) != 0)
{
//
// Under WinXP or W2K3, ITfInputProcessorProfiles::ChangeCurrentLanguage() fails
// if there is no thread manager in the current thread. This is Cicero's bug and fixed
// for Longhorn.
// We need to try ActivateKeyboardLayout() for the case.
//
IntPtr[] hklList = null;
int count = (int)SafeNativeMethods.GetKeyboardLayoutList(0, null);
if (count > 1)
{
hklList = new IntPtr[count];
count = SafeNativeMethods.GetKeyboardLayoutList(count, hklList);
int i;
for (i = 0; (i < hklList.Length) && (i < count); i++)
{
if (value == (short)hklList[i])
{
SafeNativeMethods.ActivateKeyboardLayout(new HandleRef(this,hklList[i]), 0);
break;
}
}
}
}
}
}
}
///
/// Get the list of the input languages that are available in the
/// current thread.
///
///
/// Critical - calls unmanaged code to query the languages on the system
/// TreatAsSafe - it is OK to disclose the available languages on the system
///
internal ArrayList InputLanguageList
{
[SecurityCritical, SecurityTreatAsSafe]
get
{
int nCount;
IntPtr langids;
// ITfInputProcessorProfiles::GetLanguageList returns the pointer that was allocated by
// CoTaskMemAlloc().
_ipp.Value.GetLanguageList(out langids, out nCount);
ArrayList arrayLang = new ArrayList();
int sizeOfShort = Marshal.SizeOf(typeof(short));
for (int i = 0; i < nCount; i++)
{
// Unmarshal each langid from short array.
short langid = (short)Marshal.PtrToStructure((IntPtr)((Int64)langids + sizeOfShort * i), typeof(short));
arrayLang.Add(new CultureInfo(langid));
}
// Call CoTaskMemFree().
Marshal.FreeCoTaskMem(langids);
return arrayLang;
}
}
//-----------------------------------------------------
//
// Private Methods
//
//-----------------------------------------------------
///
/// This advices the input language notify sink to
/// ITfInputProcessorProfile.
///
///
/// Critical: This calls into ITfSource which is an interop COM call
///
[SecurityCritical]
private void AdviseNotifySink(object o)
{
Debug.Assert(_cookie == UnsafeNativeMethods.TF_INVALID_COOKIE, "Cookie is already set.");
UnsafeNativeMethods.ITfSource source = _ipp.Value as UnsafeNativeMethods.ITfSource;
// workaround because I can't pass a ref to a readonly constant
Guid guid = UnsafeNativeMethods.IID_ITfLanguageProfileNotifySink;
source.AdviseSink(ref guid, o, out _cookie);
}
///
/// This unadvises the sink.
///
///
/// Critical - As this elevates to invoke UnadviseSink on ITfSource.
/// Safe - as the worst that'll happen is that we'll lose some text framework notifications.
/// Note that _ipp is marked SecurityCritical for set.
///
[SecurityCritical, SecurityTreatAsSafe]
private void UnadviseNotifySink()
{
Debug.Assert(_cookie != UnsafeNativeMethods.TF_INVALID_COOKIE, "Cookie is not set.");
UnsafeNativeMethods.ITfSource source = _ipp.Value as UnsafeNativeMethods.ITfSource;
source.UnadviseSink(_cookie);
_cookie = UnsafeNativeMethods.TF_INVALID_COOKIE;
}
//-----------------------------------------------------
//
// Private Fields
//
//------------------------------------------------------
// The reference to ITfInputProcessorProfile.
private SecurityCriticalDataForSet _ipp;
// The cookie for the advised sink.
private int _cookie;
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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