1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
/* -*- 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 .
 */

#include <sal/config.h>

#include <vcl/svapp.hxx>
#include <cppuhelper/implbase.hxx>
#include <cppuhelper/supportsservice.hxx>
#include <com/sun/star/lang/XServiceInfo.hpp>
#include <com/sun/star/uno/XComponentContext.hpp>
#include <com/sun/star/awt/XRequestCallback.hpp>

/// anonymous implementation namespace
namespace {

class AsyncCallback:
    public ::cppu::WeakImplHelper<
        css::lang::XServiceInfo,
        css::awt::XRequestCallback>
{
public:
    AsyncCallback() {}
    AsyncCallback(const AsyncCallback&) = delete;
    AsyncCallback& operator=(const AsyncCallback&) = delete;

    // css::lang::XServiceInfo:
    virtual OUString SAL_CALL getImplementationName() override;
    virtual sal_Bool SAL_CALL supportsService(const OUString & ServiceName) override;
    virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() override;

    // css::awt::XRequestCallback:
    virtual void SAL_CALL addCallback(const css::uno::Reference< css::awt::XCallback > & xCallback, const css::uno::Any & aData) override;

private:

    struct CallbackData
    {
        CallbackData( const css::uno::Reference< css::awt::XCallback >& rCallback, const css::uno::Any& rAny ) :
            xCallback( rCallback ), aData( rAny ) {}

        css::uno::Reference< css::awt::XCallback > xCallback;
        css::uno::Any                              aData;
    };

    DECL_STATIC_LINK( AsyncCallback, Notify_Impl, void*, void );

    virtual ~AsyncCallback() override {}
};

// com.sun.star.uno.XServiceInfo:
OUString SAL_CALL AsyncCallback::getImplementationName()
{
    return "com.sun.star.awt.comp.AsyncCallback";
}

sal_Bool SAL_CALL AsyncCallback::supportsService(OUString const & serviceName)
{
    return cppu::supportsService(this, serviceName);
}

css::uno::Sequence< OUString > SAL_CALL AsyncCallback::getSupportedServiceNames()
{
    return css::uno::Sequence< OUString >{ "com.sun.star.awt.AsyncCallback" };
}

// css::awt::XRequestCallback:
void SAL_CALL AsyncCallback::addCallback(const css::uno::Reference< css::awt::XCallback > & xCallback, const css::uno::Any & aData)
{
    if ( Application::IsInMain() )
    {
        // NOTE: We don't need SolarMutexGuard here as Application::PostUserEvent is thread-safe
        CallbackData* pCallbackData = new CallbackData( xCallback, aData );
        Application::PostUserEvent( LINK( this, AsyncCallback, Notify_Impl ), pCallbackData );
    }
}

// private asynchronous link to call reference to the callback object
IMPL_STATIC_LINK( AsyncCallback, Notify_Impl, void*, p, void )<--- syntax error
{
    CallbackData* pCallbackData = static_cast<CallbackData*>(p);
    try
    {
        // Asynchronous execution
        // Check pointer and reference before!
        if ( pCallbackData && pCallbackData->xCallback.is() )
            pCallbackData->xCallback->notify( pCallbackData->aData );
    }
    catch ( css::uno::Exception& )
    {
    }

    delete pCallbackData;
}

} // closing anonymous implementation namespace

extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface *
com_sun_star_awt_comp_AsyncCallback_get_implementation(
    css::uno::XComponentContext *,
    css::uno::Sequence<css::uno::Any> const &)
{
    return cppu::acquire(new AsyncCallback());
}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */