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