1 files changed, 103 insertions, 0 deletions
diff --git a/vcl/inc/saltimer.hxx b/vcl/inc/saltimer.hxx
new file mode 100644
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+++ b/vcl/inc/saltimer.hxx
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+/* -*- 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_VCL_INC_SALTIMER_HXX
+#define INCLUDED_VCL_INC_SALTIMER_HXX
+
+#include <sal/config.h>
+#include <vcl/dllapi.h>
+#include "salwtype.hxx"
+
+/*
+ * note: there will be only a single instance of SalTimer
+ * SalTimer originally had only static methods, but
+ * this needed to be virtualized for the sal plugin migration
+ */
+
+class VCL_PLUGIN_PUBLIC SalTimer
+{
+    SALTIMERPROC        m_pProc;
+
+public:
+    SalTimer() : m_pProc( nullptr ) {}
+    virtual ~SalTimer() COVERITY_NOEXCEPT_FALSE;
+
+    // AutoRepeat and Restart
+    virtual void            Start( sal_uInt64 nMS ) = 0;
+    virtual void            Stop() = 0;
+
+    // Callbacks (indepen in \sv\source\app\timer.cxx)
+    void            SetCallback( SALTIMERPROC pProc )
+    {
+        m_pProc = pProc;
+    }
+
+    void            CallCallback()
+    {
+        if( m_pProc )
+            m_pProc();
+    }
+};
+
+class VersionedEvent
+{
+    /**
+     * The "additional event data" members on macOS are integers, so we can't
+     * use an unsigned integer and rely on the defined unsigned overflow in
+     * InvalidateEvent().
+     */
+    sal_Int32 m_nEventVersion;
+    bool      m_bIsValidVersion;
+
+public:
+    VersionedEvent() : m_nEventVersion( 0 ), m_bIsValidVersion( false ) {}
+
+    sal_Int32 GetNextEventVersion()
+    {
+        InvalidateEvent();
+        m_bIsValidVersion = true;
+        return m_nEventVersion;
+    }
+
+    void InvalidateEvent()
+    {
+        if ( m_bIsValidVersion )
+        {
+            if ( m_nEventVersion == SAL_MAX_INT32 )
+                m_nEventVersion = 0;
+            else
+                ++m_nEventVersion;
+            m_bIsValidVersion = false;
+        }
+    }
+
+    bool ExistsValidEvent() const
+    {
+        return m_bIsValidVersion;
+    }
+
+    bool IsValidEventVersion( const sal_Int32 nEventVersion ) const
+    {
+        return m_bIsValidVersion && nEventVersion == m_nEventVersion;
+    }
+};
+
+#endif // INCLUDED_VCL_INC_SALTIMER_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */