Add API to check whether being used through LibreOfficeKit

LibreOffice code, when used in a program through LibreOfficeKit, needs to be
aware of that in certain crucial spots, to avoid behaviour and functionality
that makes no sense in a LibreOfficeKit scenario. As LibreOfficeKit uses a
normal LibreOffice installation to perform its job, this can't be a
compile-time choice. Also, none of the existing run-time "headlessness" modes
fully match what is needed.

Change-Id: Iaccf7f958c549f019b508854800519f54dcadb11

desktop/source/lib/init.cxx

@@ -22,6 +22,7 @@
 
 #include <tools/errinf.hxx>
 #include <osl/file.hxx>
+#include <osl/lok.hxx>
 #include <osl/process.h>
 #include <osl/thread.h>
 #include <rtl/strbuf.hxx>
@@ -852,6 +853,8 @@ static int lo_initialize(LibreOfficeKit* pThis, const char* pAppPath)
     if (bInitialized)
         return 1;
 
+    osl::LibreOfficeKit::setActive();
+
     OUString aAppPath;
     if (pAppPath)
     {

include/osl/lok.hxx

+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef INCLUDED_OSL_LOK_HXX
+#define INCLUDED_OSL_LOK_HXX
+
+#ifdef LIBO_INTERNAL_ONLY
+
+#include <sal/saldllapi.h>
+
+namespace osl
+{
+
+namespace LibreOfficeKit
+{
+
+SAL_DLLPUBLIC void setActive();
+
+SAL_DLLPUBLIC bool isActive();
+
+}
+}
+
+#endif // LIBO_INTERNAL_ONLY
+
+#endif // INCLUDED_OSL_LOK_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */

sal/osl/all/utility.cxx

@@ -17,7 +17,8 @@
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
 
-#include "osl/time.h"
+#include <osl/lok.hxx>
+#include <osl/time.h>
 
 /*
  *   mfe : maybe it would be wishful to include initialization
@@ -45,5 +46,22 @@ public:
 
 static OGlobalTimer aGlobalTimer;
 
+namespace LibreOfficeKit
+{
+
+static bool bActive(false);
+
+void setActive()
+{
+    bActive = true;
 }
+
+bool isActive()
+{
+    return bActive;
+}
+
+} // namespace LibreOfficeKit
+} // namespace osl
+
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

sal/util/sal.map

@@ -713,6 +713,11 @@ PRIVATE_textenc.1 { # LibreOffice 3.6
         _ZN3sal6detail7textenc37handleBadInputUnicodeToTextConversion*;
 };
 
+PRIVATE_4.5 { # LibreOffice 4.5
+        _ZN3osl14LibreOfficeKit8isActive*;
+        _ZN3osl14LibreOfficeKit9setActive*;
+};
+
 # Unique libstdc++ symbols:
 GLIBCXX_3.4 {
     global: