toolkit/source/awt/asynccallback.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <sal/config.h>
  21
  22 #include <boost/noncopyable.hpp>
  23 #include "vcl/svapp.hxx"
  24 #include "osl/mutex.hxx"
  25 #include "cppuhelper/factory.hxx"
  26 #include "cppuhelper/implementationentry.hxx"
  27 #include "cppuhelper/implbase2.hxx"
  28 #include <cppuhelper/supportsservice.hxx>
  29 #include "com/sun/star/lang/XServiceInfo.hpp"
  30 #include <com/sun/star/uno/XComponentContext.hpp>
  31 #include "com/sun/star/awt/XRequestCallback.hpp"
  32
  33 /// anonymous implementation namespace
  34 namespace {
  35
  36 class AsyncCallback:
  37     public ::cppu::WeakImplHelper2<
  38         css::lang::XServiceInfo,
  39         css::awt::XRequestCallback>,
  40     private boost::noncopyable
  41 {
  42 public:
  43     AsyncCallback() {}
  44
  45     // ::com::sun::star::lang::XServiceInfo:
  46     virtual OUString SAL_CALL getImplementationName() throw (css::uno::RuntimeException, std::exception) SAL_OVERRIDE;
  47     virtual sal_Bool SAL_CALL supportsService(const OUString & ServiceName) throw (css::uno::RuntimeException, std::exception) SAL_OVERRIDE;
  48     virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() throw (css::uno::RuntimeException, std::exception) SAL_OVERRIDE;
  49
  50     // ::com::sun::star::awt::XRequestCallback:
  51     virtual void SAL_CALL addCallback(const css::uno::Reference< css::awt::XCallback > & xCallback, const ::com::sun::star::uno::Any & aData) throw (css::uno::RuntimeException, std::exception) SAL_OVERRIDE;
  52
  53 private:
  54
  55     struct CallbackData
  56     {
  57         CallbackData( const css::uno::Reference< css::awt::XCallback >& rCallback, const css::uno::Any& rAny ) :
  58             xCallback( rCallback ), aData( rAny ) {}
  59
  60         css::uno::Reference< css::awt::XCallback > xCallback;
  61         css::uno::Any                              aData;
  62     };
  63
  64     DECL_STATIC_LINK( AsyncCallback, Notify_Impl, CallbackData* );
  65
  66     virtual ~AsyncCallback() {}
  67 };
  68
  69 // com.sun.star.uno.XServiceInfo:
  70 OUString SAL_CALL AsyncCallback::getImplementationName() throw (css::uno::RuntimeException, std::exception)
  71 {
  72     return OUString("com.sun.star.awt.comp.AsyncCallback");
  73 }
  74
  75 sal_Bool SAL_CALL AsyncCallback::supportsService(OUString const & serviceName) throw (css::uno::RuntimeException, std::exception)
  76 {
  77     return cppu::supportsService(this, serviceName);
  78 }
  79
  80 css::uno::Sequence< OUString > SAL_CALL AsyncCallback::getSupportedServiceNames() throw (css::uno::RuntimeException, std::exception)
  81 {
  82     css::uno::Sequence< OUString > s(1);
  83     s[0] = "com.sun.star.awt.AsyncCallback";
  84     return s;
  85 }
  86
  87 // ::com::sun::star::awt::XRequestCallback:
  88 void SAL_CALL AsyncCallback::addCallback(const css::uno::Reference< css::awt::XCallback > & xCallback, const ::com::sun::star::uno::Any & aData) throw (css::uno::RuntimeException, std::exception)
  89 {
  90     if ( Application::IsInMain() )
  91     {
  92         SolarMutexGuard aSolarGuard;
  93
  94         CallbackData* pCallbackData = new CallbackData( xCallback, aData );
  95         Application::PostUserEvent( LINK( this, AsyncCallback, Notify_Impl ), pCallbackData );
  96     }
  97 }
  98
  99 // private asynchronous link to call reference to the callback object
 100 IMPL_STATIC_LINK( AsyncCallback, Notify_Impl, CallbackData*, pCallbackData )
 101 {
 102     try
 103     {
 104         // Asynchronous execution
 105         // Check pointer and reference before!
 106         if ( pCallbackData && pCallbackData->xCallback.is() )
 107             pCallbackData->xCallback->notify( pCallbackData->aData );
 108     }
 109     catch ( css::uno::Exception& )
 110     {
 111     }
 112
 113     delete pCallbackData;
 114     return 0;
 115 }
 116
 117 } // closing anonymous implementation namespace
 118
 119 extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface * SAL_CALL
 120 com_sun_star_awt_comp_AsyncCallback_get_implementation(
 121     css::uno::XComponentContext *,
 122     css::uno::Sequence<css::uno::Any> const &)
 123 {
 124     return cppu::acquire(new AsyncCallback());
 125 }
 126
 127 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */