sw/inc/deletelistener.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
   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
  10 #pragma once
  11
  12 #include <svl/listener.hxx>
  13 #include <svl/lstner.hxx>
  14 #include "calbck.hxx"
  15
  16 class SwDeleteListener final : public SwClient
  17 {
  18 private:
  19     SwModify* m_pModify;
  20
  21     virtual void SwClientNotify(const SwModify&, const SfxHint& rHint) override
  22     {
  23         if (auto pLegacy = dynamic_cast<const sw::LegacyModifyHint*>(&rHint))
  24         {
  25             if (pLegacy->m_pOld && pLegacy->m_pOld->Which() == RES_OBJECTDYING)
  26             {
  27                 m_pModify->Remove(this);
  28                 m_pModify = nullptr;
  29             }
  30         }
  31     }
  32
  33 public:
  34     SwDeleteListener(SwModify& rModify)
  35         : m_pModify(&rModify)
  36     {
  37         m_pModify->Add(this);
  38     }
  39
  40     bool WasDeleted() const { return !m_pModify; }
  41
  42     virtual ~SwDeleteListener() override
  43     {
  44         if (!m_pModify)
  45             return;
  46         m_pModify->Remove(this);
  47     }
  48 };
  49
  50 class SvtDeleteListener final : public SvtListener
  51 {
  52 private:
  53     bool bObjectDeleted;
  54
  55 public:
  56     explicit SvtDeleteListener(SvtBroadcaster& rNotifier)
  57         : bObjectDeleted(false)
  58     {
  59         StartListening(rNotifier);
  60     }
  61
  62     virtual void Notify(const SfxHint& rHint) override
  63     {
  64         if (rHint.GetId() == SfxHintId::Dying)
  65             bObjectDeleted = true;
  66     }
  67
  68     bool WasDeleted() const { return bObjectDeleted; }
  69 };
  70
  71 class SfxDeleteListener final : public SfxListener
  72 {
  73 private:
  74     bool bObjectDeleted;
  75
  76 public:
  77     explicit SfxDeleteListener(SfxBroadcaster& rNotifier)
  78         : bObjectDeleted(false)
  79     {
  80         StartListening(rNotifier);
  81     }
  82
  83     virtual void Notify(SfxBroadcaster& /*rBC*/, const SfxHint& rHint) override
  84     {
  85         if (rHint.GetId() == SfxHintId::Dying)
  86             bObjectDeleted = true;
  87     }
  88
  89     bool WasDeleted() const { return bObjectDeleted; }
  90 };
  91
  92 /* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */