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 <vcl/svapp.hxx>
  23 #include <cppuhelper/factory.hxx>
  24 #include <cppuhelper/implementationentry.hxx>
  25 #include <cppuhelper/implbase.hxx>
  26 #include <cppuhelper/supportsservice.hxx>
  27 #include <com/sun/star/lang/XServiceInfo.hpp>
  28 #include <com/sun/star/uno/XComponentContext.hpp>
  29 #include <com/sun/star/awt/XRequestCallback.hpp>
  30
  31 /// anonymous implementation namespace
  32 namespace {
  33
  34 class AsyncCallback:
  35     public ::cppu::WeakImplHelper<
  36         css::lang::XServiceInfo,
  37         css::awt::XRequestCallback>
  38 {
  39 public:
  40     AsyncCallback() {}
  41     AsyncCallback(const AsyncCallback&) = delete;
  42     AsyncCallback& operator=(const AsyncCallback&) = delete;
  43
  44     // css::lang::XServiceInfo:
  45     virtual OUString SAL_CALL getImplementationName() override;
  46     virtual sal_Bool SAL_CALL supportsService(const OUString & ServiceName) override;
  47     virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
  48
  49     // css::awt::XRequestCallback:
  50     virtual void SAL_CALL addCallback(const css::uno::Reference< css::awt::XCallback > & xCallback, const css::uno::Any & aData) override;
  51
  52 private:
  53
  54     struct CallbackData
  55     {
  56         CallbackData( const css::uno::Reference< css::awt::XCallback >& rCallback, const css::uno::Any& rAny ) :
  57             xCallback( rCallback ), aData( rAny ) {}
  58
  59         css::uno::Reference< css::awt::XCallback > xCallback;
  60         css::uno::Any const                        aData;
  61     };
  62
  63     DECL_STATIC_LINK( AsyncCallback, Notify_Impl, void*, void );
  64
  65     virtual ~AsyncCallback() override {}
  66 };
  67
  68 // com.sun.star.uno.XServiceInfo:
  69 OUString SAL_CALL AsyncCallback::getImplementationName()
  70 {
  71     return OUString("com.sun.star.awt.comp.AsyncCallback");
  72 }
  73
  74 sal_Bool SAL_CALL AsyncCallback::supportsService(OUString const & serviceName)
  75 {
  76     return cppu::supportsService(this, serviceName);
  77 }
  78
  79 css::uno::Sequence< OUString > SAL_CALL AsyncCallback::getSupportedServiceNames()
  80 {
  81     css::uno::Sequence< OUString > s { "com.sun.star.awt.AsyncCallback" };
  82     return s;
  83 }
  84
  85 // css::awt::XRequestCallback:
  86 void SAL_CALL AsyncCallback::addCallback(const css::uno::Reference< css::awt::XCallback > & xCallback, const css::uno::Any & aData)
  87 {
  88     if ( Application::IsInMain() )
  89     {
  90         // NOTE: We don't need SolarMutexGuard here as Application::PostUserEvent is thread-safe
  91         CallbackData* pCallbackData = new CallbackData( xCallback, aData );
  92         Application::PostUserEvent( LINK( this, AsyncCallback, Notify_Impl ), pCallbackData );
  93     }
  94 }
  95
  96 // private asynchronous link to call reference to the callback object
  97 IMPL_STATIC_LINK( AsyncCallback, Notify_Impl, void*, p, void )
  98 {
  99     CallbackData* pCallbackData = static_cast<CallbackData*>(p);
 100     try
 101     {
 102         // Asynchronous execution
 103         // Check pointer and reference before!
 104         if ( pCallbackData && pCallbackData->xCallback.is() )
 105             pCallbackData->xCallback->notify( pCallbackData->aData );
 106     }
 107     catch ( css::uno::Exception& )
 108     {
 109     }
 110
 111     delete pCallbackData;
 112 }
 113
 114 } // closing anonymous implementation namespace
 115
 116 extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface *
 117 com_sun_star_awt_comp_AsyncCallback_get_implementation(
 118     css::uno::XComponentContext *,
 119     css::uno::Sequence<css::uno::Any> const &)
 120 {
 121     return cppu::acquire(new AsyncCallback());
 122 }
 123
 124 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */