sd/source/ui/framework/module/ShellStackGuard.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 "ShellStackGuard.hxx"
  21
  22 #include "framework/ConfigurationController.hxx"
  23 #include "framework/FrameworkHelper.hxx"
  24
  25 #include "DrawController.hxx"
  26 #include "ViewShellBase.hxx"
  27 #include <sfx2/printer.hxx>
  28 #include <com/sun/star/drawing/framework/XControllerManager.hpp>
  29 #include <com/sun/star/drawing/framework/XConfigurationController.hpp>
  30
  31 using namespace ::com::sun::star;
  32 using namespace ::com::sun::star::uno;
  33 using namespace ::com::sun::star::drawing::framework;
  34
  35 using ::sd::framework::FrameworkHelper;
  36
  37 namespace sd { namespace framework {
  38
  39 //===== CenterViewFocusModule ====================================================
  40
  41 ShellStackGuard::ShellStackGuard (Reference<frame::XController>& rxController)
  42     : ShellStackGuardInterfaceBase(m_aMutex),
  43       mxConfigurationController(),
  44       mpBase(NULL),
  45       mpUpdateLock(),
  46       maPrinterPollingIdle()
  47 {
  48     Reference<XControllerManager> xControllerManager (rxController, UNO_QUERY);
  49     if (xControllerManager.is())
  50     {
  51         mxConfigurationController = xControllerManager->getConfigurationController();
  52
  53         // Tunnel through the controller to obtain a ViewShellBase.
  54         Reference<lang::XUnoTunnel> xTunnel (rxController, UNO_QUERY);
  55         if (xTunnel.is())
  56         {
  57             ::sd::DrawController* pController = reinterpret_cast<sd::DrawController*>(
  58                 xTunnel->getSomething(sd::DrawController::getUnoTunnelId()));
  59             if (pController != NULL)
  60                 mpBase = pController->GetViewShellBase();
  61         }
  62     }
  63
  64     if (mxConfigurationController.is())
  65     {
  66         // Listen for update starts so that the following update can be
  67         // prevented in case of a printing printer.
  68         mxConfigurationController->addConfigurationChangeListener(
  69             this,
  70             FrameworkHelper::msConfigurationUpdateStartEvent,
  71             Any());
  72
  73         // Prepare the printer polling.
  74         maPrinterPollingIdle.SetIdleHdl(LINK(this,ShellStackGuard,TimeoutHandler));
  75         maPrinterPollingIdle.SetPriority(SchedulerPriority::LOWER);
  76     }
  77 }
  78
  79 ShellStackGuard::~ShellStackGuard()
  80 {
  81 }
  82
  83 void SAL_CALL ShellStackGuard::disposing()
  84 {
  85     if (mxConfigurationController.is())
  86         mxConfigurationController->removeConfigurationChangeListener(this);
  87
  88     mxConfigurationController = NULL;
  89     mpBase = NULL;
  90 }
  91
  92 void SAL_CALL ShellStackGuard::notifyConfigurationChange (
  93     const ConfigurationChangeEvent& rEvent)
  94     throw (RuntimeException, std::exception)
  95 {
  96     if (rEvent.Type.equals(FrameworkHelper::msConfigurationUpdateStartEvent))
  97     {
  98         if (mpUpdateLock.get() == NULL && IsPrinting())
  99         {
 100             // Prevent configuration updates while the printer is printing.
 101             mpUpdateLock.reset(new ConfigurationController::Lock(mxConfigurationController));
 102
 103             // Start polling for the printer having finished printing.
 104             maPrinterPollingIdle.Start();
 105         }
 106     }
 107 }
 108
 109 void SAL_CALL ShellStackGuard::disposing (
 110     const lang::EventObject& rEvent)
 111     throw (RuntimeException, std::exception)
 112 {
 113     if (mxConfigurationController.is())
 114         if (rEvent.Source == mxConfigurationController)
 115         {
 116             mxConfigurationController = NULL;
 117             mpBase = NULL;
 118         }
 119 }
 120
 121 IMPL_LINK_TYPED(ShellStackGuard, TimeoutHandler, Idle*, pIdle, void)
 122 {
 123 #ifdef DEBUG
 124     OSL_ASSERT(pIdle==&maPrinterPollingIdle);
 125 #else
 126     (void)pIdle;
 127 #endif
 128     if (mpUpdateLock.get() != NULL)
 129     {
 130         if ( ! IsPrinting())
 131         {
 132             // Printing finished.  Release the update lock.
 133             mpUpdateLock.reset();
 134         }
 135         else
 136         {
 137             // Wait long for the printing to finish.
 138             maPrinterPollingIdle.Start();
 139         }
 140     }
 141 }
 142
 143 bool ShellStackGuard::IsPrinting() const
 144 {
 145     if (mpBase != NULL)
 146     {
 147         SfxPrinter* pPrinter = mpBase->GetPrinter();
 148         if (pPrinter != NULL
 149             && pPrinter->IsPrinting())
 150         {
 151             return true;
 152         }
 153     }
 154
 155     return false;
 156 }
 157
 158 } } // end of namespace sd::framework
 159
 160 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */