fdo#59101 - [Feature Request] Make Find hotkey (Ctrl+F) a toggle command

Change-Id: I8cf518a18e4846f9e687d05c7f7c0eb774abba6f
Reviewed-on: https://gerrit.libreoffice.org/1751Reviewed-by: Radek Doulík <rodo@novell.com>
Tested-by: Radek Doulík <rodo@novell.com>

svx/source/tbxctrls/tbunosearchcontrollers.cxx

@@ -138,7 +138,7 @@ long FindTextFieldControl::PreNotify( NotifyEvent& rNEvt )
             sal_Bool bMod1 = pKeyEvent->GetKeyCode().IsMod1();
             sal_uInt16 nCode = pKeyEvent->GetKeyCode().GetCode();
 
-            if ( KEY_ESCAPE == nCode )
+            if ( KEY_ESCAPE == nCode || (bMod1 && (KEY_F == nCode)) )
             {
                 nRet = 1;
                 GrabFocusToDocument();