svx/source/unodraw/shapepropertynotifier.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
  21 #include <svx/shapepropertynotifier.hxx>
  22
  23 #include <com/sun/star/beans/XPropertySet.hpp>
  24
  25 #include <cppuhelper/interfacecontainer.hxx>
  26 #include <cppuhelper/weak.hxx>
  27 #include <tools/diagnose_ex.h>
  28
  29 #include <unordered_map>
  30
  31 namespace
  32 {
  33
  34     struct ShapePropertyHash
  35     {
  36         size_t operator()( svx::ShapeProperty x ) const
  37         {
  38             return size_t( x );
  39         }
  40     };
  41 }
  42
  43
  44 namespace svx
  45 {
  46
  47
  48     using ::com::sun::star::uno::Reference;
  49     using ::com::sun::star::uno::UNO_QUERY_THROW;
  50     using ::com::sun::star::uno::Exception;
  51     using ::com::sun::star::uno::Any;
  52     using ::com::sun::star::beans::PropertyChangeEvent;
  53     using ::com::sun::star::beans::XPropertyChangeListener;
  54     using ::com::sun::star::lang::EventObject;
  55     using ::com::sun::star::beans::XPropertySet;
  56
  57     typedef std::unordered_map< ShapeProperty, std::shared_ptr<IPropertyValueProvider>, ShapePropertyHash  >    PropertyProviders;
  58
  59     typedef cppu::OMultiTypeInterfaceContainerHelperVar<OUString>
  60         PropertyChangeListenerContainer;
  61
  62     IPropertyValueProvider::~IPropertyValueProvider()
  63     {
  64     }
  65
  66     struct PropertyChangeNotifier_Data
  67     {
  68         ::cppu::OWeakObject&            m_rContext;
  69         PropertyProviders               m_aProviders;
  70         PropertyChangeListenerContainer m_aPropertyChangeListeners;
  71
  72         PropertyChangeNotifier_Data( ::cppu::OWeakObject& _rContext, ::osl::Mutex& _rMutex )
  73             :m_rContext( _rContext )
  74             ,m_aPropertyChangeListeners( _rMutex )
  75         {
  76         }
  77     };
  78
  79     //= PropertyValueProvider
  80
  81
  82     OUString PropertyValueProvider::getPropertyName() const
  83     {
  84         return m_sPropertyName;
  85     }
  86
  87
  88     void PropertyValueProvider::getCurrentValue( Any& _out_rValue ) const
  89     {
  90         Reference< XPropertySet > xContextProps( const_cast< PropertyValueProvider* >( this )->m_rContext, UNO_QUERY_THROW );
  91         _out_rValue = xContextProps->getPropertyValue( getPropertyName() );
  92     }
  93
  94     PropertyChangeNotifier::PropertyChangeNotifier( ::cppu::OWeakObject& _rOwner, ::osl::Mutex& _rMutex )
  95         :m_xData( new PropertyChangeNotifier_Data( _rOwner, _rMutex ) )
  96     {
  97     }
  98
  99     PropertyChangeNotifier::~PropertyChangeNotifier()
 100     {
 101     }
 102
 103     void PropertyChangeNotifier::registerProvider(const ShapeProperty _eProperty, const std::shared_ptr<IPropertyValueProvider>& _rProvider)
 104     {
 105         ENSURE_OR_THROW( !!_rProvider, "NULL factory not allowed." );
 106
 107         OSL_ENSURE( m_xData->m_aProviders.find( _eProperty ) == m_xData->m_aProviders.end(),
 108             "PropertyChangeNotifier::registerProvider: factory for this ID already present!" );
 109
 110         m_xData->m_aProviders[ _eProperty ] = _rProvider;
 111     }
 112
 113     void PropertyChangeNotifier::notifyPropertyChange( const ShapeProperty _eProperty ) const
 114     {
 115         PropertyProviders::const_iterator provPos = m_xData->m_aProviders.find( _eProperty );
 116         OSL_ENSURE( provPos != m_xData->m_aProviders.end(), "PropertyChangeNotifier::notifyPropertyChange: no factory!" );
 117         if ( provPos == m_xData->m_aProviders.end() )
 118             return;
 119
 120         OUString sPropertyName( provPos->second->getPropertyName() );
 121
 122         ::cppu::OInterfaceContainerHelper* pPropListeners = m_xData->m_aPropertyChangeListeners.getContainer( sPropertyName );
 123         ::cppu::OInterfaceContainerHelper* pAllListeners = m_xData->m_aPropertyChangeListeners.getContainer( OUString() );
 124         if ( !pPropListeners && !pAllListeners )
 125             return;
 126
 127         try
 128         {
 129             PropertyChangeEvent aEvent;
 130             aEvent.Source = m_xData->m_rContext;
 131             // Handle/OldValue not supported
 132             aEvent.PropertyName = provPos->second->getPropertyName();
 133             provPos->second->getCurrentValue( aEvent.NewValue );
 134
 135             if ( pPropListeners )
 136                 pPropListeners->notifyEach( &XPropertyChangeListener::propertyChange, aEvent );
 137             if ( pAllListeners )
 138                 pAllListeners->notifyEach( &XPropertyChangeListener::propertyChange, aEvent );
 139         }
 140         catch( const Exception& )
 141         {
 142             DBG_UNHANDLED_EXCEPTION("svx");
 143         }
 144     }
 145
 146
 147     void PropertyChangeNotifier::addPropertyChangeListener( const OUString& _rPropertyName, const Reference< XPropertyChangeListener >& _rxListener )
 148     {
 149         m_xData->m_aPropertyChangeListeners.addInterface( _rPropertyName, _rxListener );
 150     }
 151
 152
 153     void PropertyChangeNotifier::removePropertyChangeListener( const OUString& _rPropertyName, const Reference< XPropertyChangeListener >& _rxListener )
 154     {
 155         m_xData->m_aPropertyChangeListeners.removeInterface( _rPropertyName, _rxListener );
 156     }
 157
 158
 159     void PropertyChangeNotifier::disposing()
 160     {
 161         EventObject aEvent;
 162         aEvent.Source = m_xData->m_rContext;
 163         m_xData->m_aPropertyChangeListeners.disposeAndClear( aEvent );
 164     }
 165
 166
 167 }
 168
 169
 170 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */