// NOTE: An earlier attempt was to monitor LOCATIONCHANGE only between EVENT_SYSTEM_MOVESIZESTART and EVENT_SYSTEM_MOVESIZEEND
// This nearly worked, and meant we were watching many fewer events ...
// ...but we missed some of the resizing events for the window, leaving our tooltip stranded.
// So until we can find a workaround for that (perhaps a timer would work fine for this), we watch all the LOCATIONCHANGE events.
public WindowLocationWatcher(IntPtr hWnd, SynchronizationContext syncContextAuto)
{
_hWnd = hWnd;
_syncContextAuto = syncContextAuto;
_windowLocationChangeHook = new WinEventHook(WinEventHook.WinEvent.EVENT_OBJECT_LOCATIONCHANGE, WinEventHook.WinEvent.EVENT_OBJECT_LOCATIONCHANGE, _syncContextAuto, _hWnd);
_windowLocationChangeHook.WinEventReceived += _windowLocationChangeHook_WinEventReceived;
}
void _windowLocationChangeHook_WinEventReceived(object sender, WinEventHook.WinEventArgs winEventArgs)
{
#if DEBUG
Logger.WinEvents.Verbose($"{winEventArgs.EventType} - Window {winEventArgs.WindowHandle:X} ({Win32Helper.GetClassName(winEventArgs.WindowHandle)} - Object/Child {winEventArgs.ObjectId} / {winEventArgs.ChildId} - Thread {winEventArgs.EventThreadId} at {winEventArgs.EventTimeMs}");
#endif
LocationChanged?.Invoke(this, EventArgs.Empty);
}
// NOTE: An earlier attempt was to monitor LOCATIONCHANGE only between EVENT_SYSTEM_MOVESIZESTART and EVENT_SYSTEM_MOVESIZEEND
// This nearly worked, and meant we were watching many fewer events ...
// ...but we missed some of the resizing events for the window, leaving our tooltip stranded.
// So until we can find a workaround for that (perhaps a timer would work fine for this), we watch all the LOCATIONCHANGE events.
public WindowLocationWatcher(IntPtr hWnd, SynchronizationContext syncContextAuto)
{
_hWnd = hWnd;
_syncContextAuto = syncContextAuto;
_windowLocationChangeHook = new WinEventHook(WinEventHook.WinEvent.EVENT_OBJECT_LOCATIONCHANGE, WinEventHook.WinEvent.EVENT_OBJECT_LOCATIONCHANGE, _syncContextAuto, _hWnd);
_windowLocationChangeHook.WinEventReceived += _windowLocationChangeHook_WinEventReceived;
}
public void Dispose()
{
if (_windowLocationChangeHook != null)
{
_windowLocationChangeHook.Dispose();
_windowLocationChangeHook = null;
}
}
public void Dispose()
{
if (_windowLocationChangeHook != null)
{
_windowLocationChangeHook.Dispose();
_windowLocationChangeHook = null;
}
}
public void Dispose()
{
if (_windowStateChangeHook != null)
{
_windowStateChangeHook.Stop();
_windowStateChangeHook = null;
}
}
public event EventHandler PopupListListChanged = delegate { }; // Might start off with nothing. Changes at most once.
public WindowWatcher(string xllName)
{
Debug.Print("### WindowWatcher created on thread: " + Thread.CurrentThread.ManagedThreadId);
// Using WinEvents instead of Automation so that we can watch top-level changes, but only from the right process.
_windowStateChangeHook = new WinEventHook(WindowStateChange,
WinEventHook.WinEvent.EVENT_OBJECT_CREATE, WinEventHook.WinEvent.EVENT_OBJECT_FOCUS, xllName);
}
// Must run on the main thread
public void Dispose()
{
Debug.Assert(Thread.CurrentThread.ManagedThreadId == 1);
if (_windowStateChangeHook != null)
{
_windowStateChangeHook.Dispose();
_windowStateChangeHook = null;
}
}
public event EventHandler PopupListListChanged = delegate { }; // Might start off with nothing. Changes at most once.
public WindowWatcher(string xllName)
{
Debug.Print("### WindowWatcher created on thread: " + Thread.CurrentThread.ManagedThreadId);
// Using WinEvents instead of Automation so that we can watch top-level changes, but only from the right process.
_windowStateChangeHook = new WinEventHook(WindowStateChange,
WinEventHook.WinEvent.EVENT_OBJECT_CREATE, WinEventHook.WinEvent.EVENT_OBJECT_FOCUS, xllName);
}
// public event EventHandler<WindowChangedEventArgs> SelectDataSourceWindowChanged;
public WindowWatcher(SynchronizationContext syncContextAuto)
{
#pragma warning disable CS0618 // Type or member is obsolete (GetCurrentThreadId) - But for debugging we want to monitor this anyway
// Debug.Print($"### WindowWatcher created on thread: Managed {Thread.CurrentThread.ManagedThreadId}, Native {AppDomain.GetCurrentThreadId()}");
#pragma warning restore CS0618 // Type or member is obsolete
// Using WinEvents instead of Automation so that we can watch top-level window changes, but only from the right (current Excel) process.
// TODO: We need to dramatically reduce the number of events we grab here...
_windowStateChangeHook = new WinEventHook(WinEventHook.WinEvent.EVENT_OBJECT_CREATE, WinEventHook.WinEvent.EVENT_OBJECT_FOCUS, syncContextAuto, IntPtr.Zero);
// _windowStateChangeHook = new WinEventHook(WinEventHook.WinEvent.EVENT_OBJECT_CREATE, WinEventHook.WinEvent.EVENT_OBJECT_END, syncContextAuto);
_windowStateChangeHook.WinEventReceived += _windowStateChangeHook_WinEventReceived;
}
// public event EventHandler<WindowChangedEventArgs> SelectDataSourceWindowChanged;
public WindowWatcher(SynchronizationContext syncContextAuto)
{
#pragma warning disable CS0618 // Type or member is obsolete (GetCurrentThreadId) - But for debugging we want to monitor this anyway
// Debug.Print($"### WindowWatcher created on thread: Managed {Thread.CurrentThread.ManagedThreadId}, Native {AppDomain.GetCurrentThreadId()}");
#pragma warning restore CS0618 // Type or member is obsolete
// Using WinEvents instead of Automation so that we can watch top-level window changes, but only from the right (current Excel) process.
// TODO: We need to dramatically reduce the number of events we grab here...
_windowStateChangeHook = new WinEventHook(WinEventHook.WinEvent.EVENT_OBJECT_CREATE, WinEventHook.WinEvent.EVENT_OBJECT_FOCUS, syncContextAuto, IntPtr.Zero);
// _windowStateChangeHook = new WinEventHook(WinEventHook.WinEvent.EVENT_OBJECT_CREATE, WinEventHook.WinEvent.EVENT_OBJECT_END, syncContextAuto);
_windowStateChangeHook.WinEventReceived += _windowStateChangeHook_WinEventReceived;
}
// Runs on our automation thread
void InstallEventHandlers()
{
Logger.WindowWatcher.Verbose(string.Format("PopupList Installing event handlers on thread {0}", Thread.CurrentThread.ManagedThreadId));
try
{
// TODO: Clean up
var hwndListView = Win32Helper.GetFirstChildWindow(_hwndPopupList);
_selectionChangeHook = new WinEventHook(WinEventHook.WinEvent.EVENT_OBJECT_SELECTION, WinEventHook.WinEvent.EVENT_OBJECT_SELECTION, _syncContextAuto, _syncContextMain, hwndListView);
_selectionChangeHook.WinEventReceived += _selectionChangeHook_WinEventReceived;
Logger.WindowWatcher.Verbose("PopupList selection event handler added");
}
catch (Exception ex)
{
// Probably no longer visible
Logger.WindowWatcher.Warn(string.Format("PopupList event handler error {0}", ex));
_hwndPopupList = IntPtr.Zero;
IsVisible = false;
}
}
public void Dispose()
{
if (_windowStateChangeHook != null)
{
_windowStateChangeHook.Stop();
_windowStateChangeHook = null;
}
}
internal static bool IsSupportedWinEvent(WinEventHook.WinEvent winEvent)
{
return winEvent == WinEventHook.WinEvent.EVENT_OBJECT_CREATE ||
winEvent == WinEventHook.WinEvent.EVENT_OBJECT_DESTROY ||
winEvent == WinEventHook.WinEvent.EVENT_OBJECT_SHOW ||
winEvent == WinEventHook.WinEvent.EVENT_OBJECT_HIDE ||
winEvent == WinEventHook.WinEvent.EVENT_OBJECT_FOCUS ||
winEvent == WinEventHook.WinEvent.EVENT_OBJECT_LOCATIONCHANGE; // Only for the on-demand hook
}
// This runs on the Automation thread, via SyncContextAuto passed in to WinEventHook when we created this WindowWatcher
// CONSIDER: We would be able to run all the watcher updates from WinEvents, including Location and Selection changes,
// but since WinEvents have no hwnd filter, UIAutomation events might be more efficient.
// CONSIDER: Performance optimisation would keep a list of window handles we know about, preventing the class name check every time
void _windowStateChangeHook_WinEventReceived(object sender, WinEventHook.WinEventArgs e)
{
if (!WindowChangedEventArgs.IsSupportedWinEvent(e.EventType))
return;
var className = Win32Helper.GetClassName(e.WindowHandle);
if (e.EventType == WinEventHook.WinEvent.EVENT_OBJECT_FOCUS)
{
// Might raise change event for Unfocus
if (!UpdateFocus(e.WindowHandle, className))
{
// We already have the right focus
return;
}
}
// Debug.Print("### Thread receiving WindowStateChange: " + Thread.CurrentThread.ManagedThreadId);
switch (className)
{
//case _sheetWindowClass:
// if (e.EventType == WinEventHook.WinEvent.EVENT_OBJECT_SHOW)
// {
// // Maybe a new workbook is on top...
// // Note that there is also an EVENT_OBJECT_PARENTCHANGE (which we are not subscribing to at the moment
// }
// break;
case _popupListClass:
PopupListWindowChanged?.Invoke(this, new WindowChangedEventArgs(e.WindowHandle, e.EventType));
break;
case _inCellEditClass:
InCellEditWindowChanged?.Invoke(this, new WindowChangedEventArgs(e.WindowHandle, e.EventType));
break;
case _formulaBarClass:
FormulaBarWindowChanged?.Invoke(this, new WindowChangedEventArgs(e.WindowHandle, e.EventType));
break;
case _excelToolTipClass:
ExcelToolTipWindowChanged?.Invoke(this, new WindowChangedEventArgs(e.WindowHandle, e.EventType));
break;
//case _nuiDialogClass:
// // Debug.Print($"SelectDataSource {_selectDataSourceClass} Window update: {e.WindowHandle:X}, EventType: {e.EventType}, idChild: {e.ChildId}");
// if (e.EventType == WinEventHook.WinEvent.EVENT_OBJECT_CREATE)
// {
// // Get the name of this window - maybe ours or some other NUIDialog
// var windowTitle = Win32Helper.GetText(e.WindowHandle);
// if (windowTitle.Equals(_selectDataSourceTitle, StringComparison.OrdinalIgnoreCase))
// {
// SelectDataSourceWindow = e.WindowHandle;
// SelectDataSourceWindowChanged?.Invoke(this,
// new WindowChangedEventArgs { Type = WindowChangedEventArgs.ChangeType.Create });
// }
// }
// else if (SelectDataSourceWindow == e.WindowHandle && e.EventType == WinEventHook.WinEvent.EVENT_OBJECT_SHOW)
// {
// IsSelectDataSourceWindowVisible = true;
// SelectDataSourceWindowChanged?.Invoke(this,
// new WindowChangedEventArgs { Type = WindowChangedEventArgs.ChangeType.Create });
// }
// else if (SelectDataSourceWindow == e.WindowHandle && e.EventType == WinEventHook.WinEvent.EVENT_OBJECT_HIDE)
// {
// IsSelectDataSourceWindowVisible = false;
// SelectDataSourceWindowChanged?.Invoke(this, new WindowChangedEventArgs { Type = WindowChangedEventArgs.ChangeType.Hide });
// }
// else if (SelectDataSourceWindow == e.WindowHandle && e.EventType == WinEventHook.WinEvent.EVENT_OBJECT_DESTROY)
// {
// IsSelectDataSourceWindowVisible = false;
// SelectDataSourceWindow = IntPtr.Zero;
// SelectDataSourceWindowChanged?.Invoke(this, new WindowChangedEventArgs { Type = WindowChangedEventArgs.ChangeType.Destroy });
// }
// break;
default:
//InCellEditWindowChanged(this, EventArgs.Empty);
break;
}
}
void WindowStateChange(IntPtr hWinEventHook, WinEventHook.WinEvent eventType, IntPtr hWnd, int idObject, int idChild, uint dwEventThread, uint dwmsEventTime)
{
// This runs on the main application thread.
Debug.Print("### Thread receiving WindowStateChange: " + Thread.CurrentThread.ManagedThreadId);
switch (Win32Helper.GetClassName(hWnd))
{
case _classMain:
//if (eventType == WinEventHook.WinEvent.EVENT_OBJECT_FOCUS ||
// eventType == WinEventHook.WinEvent.EVENT_OBJECT_SHOW)
{
Debug.Print("MainWindow update: " + hWnd.ToString("X") + ", EventType: " + eventType);
UpdateMainWindow(hWnd);
}
if (eventType == WinEventHook.WinEvent.EVENT_OBJECT_DESTROY)
{
}
break;
case _classPopupList:
if (PopupListWindow == IntPtr.Zero &&
(eventType == WinEventHook.WinEvent.EVENT_OBJECT_CREATE ||
eventType == WinEventHook.WinEvent.EVENT_OBJECT_SHOW))
{
PopupListWindow = hWnd;
PopupListWindowChanged(this, EventArgs.Empty);
}
else
{
Debug.Assert(PopupListWindow == hWnd);
}
break;
case _classInCellEdit:
Debug.Print("InCell Window update: " + hWnd.ToString("X") + ", EventType: " + eventType + ", idChild: " + idChild);
if (eventType == WinEventHook.WinEvent.EVENT_OBJECT_CREATE ||
eventType == WinEventHook.WinEvent.EVENT_OBJECT_SHOW)
{
InCellEditWindow = hWnd;
InCellEditWindowChanged(this, EventArgs.Empty);
}
else if (eventType == WinEventHook.WinEvent.EVENT_OBJECT_HIDE)
{
InCellEditWindow = IntPtr.Zero;
InCellEditWindowChanged(this, EventArgs.Empty);
}
else if (eventType == WinEventHook.WinEvent.EVENT_OBJECT_FOCUS)
{
InCellEditFocused(this, EventArgs.Empty);
}
break;
case _classFormulaBar:
Debug.Print("FormulaBar Window update: " + hWnd.ToString("X") + ", EventType: " + eventType + ", idChild: " + idChild);
if (eventType == WinEventHook.WinEvent.EVENT_OBJECT_CREATE ||
eventType == WinEventHook.WinEvent.EVENT_OBJECT_SHOW)
{
FormulaBarWindow = hWnd;
FormulaBarWindowChanged(this, EventArgs.Empty);
}
else if (eventType == WinEventHook.WinEvent.EVENT_OBJECT_FOCUS)
{
FormulaBarFocused(this, EventArgs.Empty);
}
break;
default:
//InCellEditWindowChanged(this, EventArgs.Empty);
break;
}
}
internal WindowChangedEventArgs(IntPtr windowHandle, WinEventHook.WinEvent winEvent)
{
WindowHandle = windowHandle;
switch (winEvent)
{
case WinEventHook.WinEvent.EVENT_OBJECT_CREATE:
Type = ChangeType.Create;
break;
case WinEventHook.WinEvent.EVENT_OBJECT_DESTROY:
Type = ChangeType.Destroy;
break;
case WinEventHook.WinEvent.EVENT_OBJECT_SHOW:
Type = ChangeType.Show;
break;
case WinEventHook.WinEvent.EVENT_OBJECT_HIDE:
Type = ChangeType.Hide;
break;
case WinEventHook.WinEvent.EVENT_OBJECT_FOCUS:
Type = ChangeType.Focus;
break;
case WinEventHook.WinEvent.EVENT_OBJECT_LOCATIONCHANGE:
Type = ChangeType.LocationChange;
break;
default:
throw new ArgumentException("Unexpected WinEvent type", nameof(winEvent));
}
}