sfx2/source/sidebar/ContextChangeBroadcaster.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 #include <sidebar/ContextChangeBroadcaster.hxx>
  20 #include <vcl/EnumContext.hxx>
  21 #include <com/sun/star/ui/ContextChangeEventObject.hpp>
  22 #include <com/sun/star/ui/ContextChangeEventMultiplexer.hpp>
  23 #include <com/sun/star/frame/ModuleManager.hpp>
  24 #include <osl/diagnose.h>
  25 #include <comphelper/lok.hxx>
  26 #include <comphelper/processfactory.hxx>
  27 #include <sfx2/lokhelper.hxx>
  28 #include <sfx2/viewsh.hxx>
  29
  30 using namespace css;
  31 using namespace css::uno;
  32
  33 namespace sfx2::sidebar {
  34
  35 ContextChangeBroadcaster::ContextChangeBroadcaster()
  36     : msContextName(),
  37       mbIsBroadcasterEnabled(true)
  38 {
  39 }
  40
  41 ContextChangeBroadcaster::~ContextChangeBroadcaster()
  42 {
  43 }
  44
  45 void ContextChangeBroadcaster::Initialize (const OUString& rsContextName)
  46 {
  47     msContextName = rsContextName;
  48 }
  49
  50 void ContextChangeBroadcaster::Activate (const css::uno::Reference<css::frame::XFrame>& rxFrame)
  51 {
  52     if (msContextName.getLength() > 0)
  53         BroadcastContextChange(rxFrame, GetModuleName(rxFrame), msContextName);
  54 }
  55
  56 void ContextChangeBroadcaster::Deactivate (const css::uno::Reference<css::frame::XFrame>& rxFrame)
  57 {
  58     if (msContextName.getLength() > 0 && !comphelper::LibreOfficeKit::isActive())
  59     {
  60         BroadcastContextChange(rxFrame, GetModuleName(rxFrame),
  61                                vcl::EnumContext::GetContextName(vcl::EnumContext::Context::Default));
  62     }
  63 }
  64
  65 bool ContextChangeBroadcaster::SetBroadcasterEnabled (const bool bIsEnabled)
  66 {
  67     const bool bWasEnabled (mbIsBroadcasterEnabled);
  68     mbIsBroadcasterEnabled = bIsEnabled;
  69     return bWasEnabled;
  70 }
  71
  72 void ContextChangeBroadcaster::BroadcastContextChange (
  73     const css::uno::Reference<css::frame::XFrame>& rxFrame,
  74     const OUString& rsModuleName,
  75     const OUString& rsContextName)
  76 {
  77     if ( ! mbIsBroadcasterEnabled)
  78         return;
  79
  80     if (rsContextName.getLength() == 0)
  81         return;
  82
  83     if ( ! rxFrame.is() || ! rxFrame->getController().is())
  84     {
  85         // Frame is (probably) being deleted.  Broadcasting context
  86         // changes is not necessary anymore.
  87         return;
  88     }
  89
  90     // notify the LOK too
  91     if (comphelper::LibreOfficeKit::isActive())
  92     {
  93         if (SfxViewShell* pViewShell = SfxViewShell::Get(rxFrame->getController()))
  94             SfxLokHelper::notifyContextChange(pViewShell, rsModuleName, rsContextName);
  95     }
  96
  97     const css::ui::ContextChangeEventObject aEvent(
  98         rxFrame->getController(),
  99         rsModuleName,
 100         rsContextName);
 101
 102     css::uno::Reference<css::ui::XContextChangeEventMultiplexer> xMultiplexer (
 103         css::ui::ContextChangeEventMultiplexer::get(
 104             ::comphelper::getProcessComponentContext()));
 105     if (xMultiplexer.is())
 106         xMultiplexer->broadcastContextChangeEvent(aEvent, rxFrame->getController());
 107 }
 108
 109 OUString ContextChangeBroadcaster::GetModuleName (const css::uno::Reference<css::frame::XFrame>& rxFrame)
 110 {
 111     if ( ! rxFrame.is() || ! rxFrame->getController().is())
 112         return OUString();
 113     try
 114     {
 115         const Reference<XComponentContext> xContext (::comphelper::getProcessComponentContext() );
 116         const Reference<frame::XModuleManager> xModuleManager  = frame::ModuleManager::create( xContext );
 117         return xModuleManager->identify(rxFrame);
 118     }
 119     catch (const Exception&)
 120     {
 121         OSL_ENSURE(false, "can not determine module name");
 122     }
 123     return OUString();
 124 }
 125
 126 } // end of namespace ::sfx2::sidebar
 127
 128 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */