lokit: double check for disposed windows & fix leak.

it seems we can get windows disposed before we get to the emission.

<segv>
vcl::Window::IsTracking() const vcl/source/window/window2.cxx:341
(anonymous namespace)::LOKPostAsyncEvent(void*, void*) sfx2/source/view/lokhelper.cxx:725
LokChartHelper::postMouseEvent(int, int, int, int, int, int, double, double) include/rtl/ref.hxx:112
SwXTextDocument::postMouseEvent(int, int, int, int, int, int) sw/source/uibase/uno/unotxdoc.cxx:3561

Change-Id: I93aea931dad1e7f43d3d610568424c53d2b22fbc
Signed-off-by: Michael Meeks <michael.meeks@collabora.com>
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/127907
(cherry picked from commit 7ba99b8d6da07c2133c644de4d1a3613a9fa5a68)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/129839
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>

1 files changed, 7 insertions, 4 deletions

diff --git a/sfx2/source/view/lokhelper.cxx b/sfx2/source/view/lokhelper.cxx
index cd93f9b4dd55..cb8194c1cabf 100644
--- a/sfx2/source/view/lokhelper.cxx
+++ b/sfx2/source/view/lokhelper.cxx
@@ -679,9 +679,7 @@ namespace
     {
         std::unique_ptr<LOKAsyncEventData> pLOKEv(static_cast<LOKAsyncEventData*>(pEv));
         if (pLOKEv->mpWindow->isDisposed())
-        {
             return;
-        }
 
         int nView = SfxLokHelper::getView(nullptr);
         if (nView != pLOKEv->mnView)
@@ -700,6 +698,9 @@ namespace
         if (!pFocusWindow)
             pFocusWindow = pLOKEv->mpWindow;
 
+        if (pLOKEv->mpWindow->isDisposed())
+            return;
+
         switch (pLOKEv->mnEvent)
         {
         case VclEventId::WindowKeyInput:
@@ -708,11 +709,13 @@ namespace
             KeyEvent singlePress(pLOKEv->maKeyEvent.GetCharCode(),
                                  pLOKEv->maKeyEvent.GetKeyCode());
             for (sal_uInt16 i = 0; i <= nRepeat; ++i)
-                pFocusWindow->KeyInput(singlePress);
+                if (!pFocusWindow->isDisposed())
+                    pFocusWindow->KeyInput(singlePress);
             break;
         }
         case VclEventId::WindowKeyUp:
-            pFocusWindow->KeyUp(pLOKEv->maKeyEvent);
+            if (!pFocusWindow->isDisposed())
+                pFocusWindow->KeyUp(pLOKEv->maKeyEvent);
             break;
         case VclEventId::WindowMouseButtonDown:
             pLOKEv->mpWindow->LogicMouseButtonDown(pLOKEv->maMouseEvent);