sfx2/source/control/itemdel.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 <itemdel.hxx>
  23 #include <svl/poolitem.hxx>
  24 #include <vcl/idle.hxx>
  25
  26 #include <tools/debug.hxx>
  27
  28 class SfxItemDisruptor_Impl
  29 {
  30     std::unique_ptr<SfxPoolItem> pItem;
  31     Idle m_Idle;
  32
  33 private:
  34     DECL_LINK(Delete, Timer*, void);
  35
  36 public:
  37     explicit SfxItemDisruptor_Impl(std::unique_ptr<SfxPoolItem> pItemToDesrupt);
  38     void LaunchDeleteOnIdle();
  39     ~SfxItemDisruptor_Impl();
  40     SfxItemDisruptor_Impl(const SfxItemDisruptor_Impl&) = delete;
  41     SfxItemDisruptor_Impl& operator=(const SfxItemDisruptor_Impl&) = delete;
  42 };
  43
  44 SfxItemDisruptor_Impl::SfxItemDisruptor_Impl(std::unique_ptr<SfxPoolItem> pItemToDisrupt)
  45     : pItem(std::move(pItemToDisrupt))
  46     , m_Idle("sfx SfxItemDisruptor_Impl::Delete")
  47 {
  48     m_Idle.SetInvokeHandler(LINK(this, SfxItemDisruptor_Impl, Delete));
  49     m_Idle.SetPriority(TaskPriority::DEFAULT_IDLE);
  50     m_Idle.SetDebugName("sfx::SfxItemDisruptor_Impl m_Idle");
  51
  52     DBG_ASSERT(0 == pItem->GetRefCount(), "disrupting pooled item");
  53     pItem->SetKind(SfxItemKind::DeleteOnIdle);
  54 }
  55
  56 void SfxItemDisruptor_Impl::LaunchDeleteOnIdle() { m_Idle.Start(); }
  57
  58 SfxItemDisruptor_Impl::~SfxItemDisruptor_Impl()
  59 {
  60     m_Idle.Stop();
  61
  62     // reset RefCount (was set to SFX_ITEMS_SPECIAL before!)
  63     pItem->SetRefCount(0);
  64
  65     pItem.reset();
  66 }
  67
  68 IMPL_LINK_NOARG(SfxItemDisruptor_Impl, Delete, Timer*, void) { delete this; }
  69
  70 void DeleteItemOnIdle(std::unique_ptr<SfxPoolItem> pItem)
  71 {
  72     DBG_ASSERT(0 == pItem->GetRefCount(), "deleting item in use");
  73     SfxItemDisruptor_Impl* pDesruptor = new SfxItemDisruptor_Impl(std::move(pItem));
  74     pDesruptor->LaunchDeleteOnIdle();
  75     // coverity[leaked_storage] - pDesruptor takes care of its own destruction at idle time
  76 }
  77
  78 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */