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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org. If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#ifndef _MTAOLECLIPB_HXX_
+#define _MTAOLECLIPB_HXX_
+
+#include <sal/types.h>
+#include <osl/mutex.hxx>
+
+#if defined _MSC_VER
+#pragma warning(push,1)
+#endif
+#include <objidl.h>
+#if defined _MSC_VER
+#pragma warning(pop)
+#endif
+
+//--------------------------------------------------------
+// the Mta-Ole clipboard class is for internal use only!
+// only one instance of this class should be created, the
+// user has to ensure this!
+// the class is not thread-safe because it will be used
+// only from within the clipboard service and the methods
+// of the clipboard service are already synchronized
+//--------------------------------------------------------
+
+class CMtaOleClipboard
+{
+public:
+ typedef void ( WINAPI *LPFNC_CLIPVIEWER_CALLBACK_t )( void );
+
+public:
+ CMtaOleClipboard( );
+ ~CMtaOleClipboard( );
+
+ // clipboard functions
+ HRESULT setClipboard( IDataObject* pIDataObject );
+ HRESULT getClipboard( IDataObject** ppIDataObject );
+ HRESULT flushClipboard( );
+
+ // register/unregister a clipboard viewer; there can only
+ // be one at a time; parameter NULL means unregister
+ // a clipboard viewer
+ // returns true on success else false; use GetLastError( ) in
+ // false case
+ sal_Bool registerClipViewer( LPFNC_CLIPVIEWER_CALLBACK_t pfncClipViewerCallback );
+
+private:
+ unsigned int run( );
+
+ // create a hidden windows which serves as an request
+ // target; so we guarantee synchronization
+ void createMtaOleReqWnd( );
+
+ // message support
+ sal_Bool postMessage( UINT msg, WPARAM wParam = 0, LPARAM lParam = 0 );
+ LRESULT sendMessage( UINT msg, WPARAM wParam = 0, LPARAM lParam = 0 );
+
+ //---------------------------------------------------------------
+ // message handler functions; remeber these functions are called
+ // from a different thread context!
+ //---------------------------------------------------------------
+
+ LRESULT onSetClipboard( IDataObject* pIDataObject );
+ LRESULT onGetClipboard( LPSTREAM* ppStream );
+ LRESULT onFlushClipboard( );
+ sal_Bool onRegisterClipViewer( LPFNC_CLIPVIEWER_CALLBACK_t pfncClipViewerCallback );
+
+ // win32 clipboard-viewer support
+ LRESULT onChangeCBChain( HWND hWndRemove, HWND hWndNext );
+ LRESULT onDrawClipboard( );
+
+ static LRESULT CALLBACK mtaOleReqWndProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam );
+ static unsigned int WINAPI oleThreadProc( LPVOID pParam );
+
+ static unsigned int WINAPI clipboardChangedNotifierThreadProc( LPVOID pParam );
+
+ sal_Bool WaitForThreadReady( ) const;
+
+private:
+ HANDLE m_hOleThread;
+ unsigned m_uOleThreadId;
+ HANDLE m_hEvtThrdReady;
+ HWND m_hwndMtaOleReqWnd;
+ ATOM m_MtaOleReqWndClassAtom;
+ HWND m_hwndNextClipViewer;
+ LPFNC_CLIPVIEWER_CALLBACK_t m_pfncClipViewerCallback;
+ sal_Bool m_bInRegisterClipViewer;
+
+ sal_Bool m_bRunClipboardNotifierThread;
+ HANDLE m_hClipboardChangedNotifierThread;
+ HANDLE m_hClipboardChangedNotifierEvents[2];
+ HANDLE& m_hClipboardChangedEvent;
+ HANDLE& m_hTerminateClipboardChangedNotifierEvent;
+ osl::Mutex m_ClipboardChangedEventCountMutex;
+ sal_Int32 m_ClipboardChangedEventCount;
+
+ osl::Mutex m_pfncClipViewerCallbackMutex;
+
+ static CMtaOleClipboard* s_theMtaOleClipboardInst;
+
+// not allowed
+private:
+ CMtaOleClipboard( const CMtaOleClipboard& );
+ CMtaOleClipboard& operator=( const CMtaOleClipboard& );
+
+ friend LRESULT CALLBACK mtaOleReqWndProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam );
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */