sfx2/source/sidebar/AsynchronousCall.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.
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   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 <sfx2/sidebar/AsynchronousCall.hxx>
  21 #include <utility>
  22 #include <vcl/svapp.hxx>
  23 #include <sfx2/viewfrm.hxx>
  24 #include <sfx2/lokhelper.hxx>
  25
  26 namespace sfx2::sidebar {
  27
  28 AsynchronousCall::AsynchronousCall (const SfxViewFrame* pViewFrame, Action aAction)
  29     : maAction(std::move(aAction)),
  30       mnCallId(nullptr),
  31       mpViewFrame(pViewFrame)
  32 {
  33 }
  34
  35 AsynchronousCall::~AsynchronousCall()
  36 {
  37     CancelRequest();
  38 }
  39
  40 void AsynchronousCall::RequestCall()
  41 {
  42     if (mnCallId == nullptr)
  43     {
  44         Link<void*,void> aLink (LINK(this, AsynchronousCall, HandleUserCall));
  45         mnCallId = Application::PostUserEvent(aLink);
  46     }
  47 }
  48
  49 void AsynchronousCall::CancelRequest()
  50 {
  51     if (mnCallId != nullptr)
  52     {
  53         Application::RemoveUserEvent(mnCallId);
  54         mnCallId = nullptr;
  55     }
  56 }
  57
  58 void AsynchronousCall::Sync()
  59 {
  60     if (mnCallId != nullptr) {
  61         SfxLokLanguageGuard aGuard(mpViewFrame ? mpViewFrame->GetViewShell() : nullptr);
  62         maAction();
  63         CancelRequest();
  64     }
  65 }
  66
  67 IMPL_LINK_NOARG(AsynchronousCall, HandleUserCall, void*, void )
  68 {
  69     mnCallId = nullptr;
  70     if (maAction)
  71     {
  72         SfxLokLanguageGuard aGuard(mpViewFrame ? mpViewFrame->GetViewShell() : nullptr);
  73         maAction();
  74     }
  75 }
  76
  77 } // end of namespace sfx2::sidebar
  78
  79 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */