include/svx/shapepropertynotifier.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
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   8  *
   9  * This file incorporates work covered by the following license notice:
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  14  *   ownership. The ASF licenses this file to you under the Apache
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  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 #ifndef SVX_PROPERTYCHANGENOTIFIER_HXX
  21 #define SVX_PROPERTYCHANGENOTIFIER_HXX
  22
  23 #include "svx/svxdllapi.h"
  24 #include "svx/shapeproperty.hxx"
  25
  26 #include <com/sun/star/beans/PropertyChangeEvent.hpp>
  27 #include <com/sun/star/beans/XPropertyChangeListener.hpp>
  28
  29 #include <boost/noncopyable.hpp>
  30 #include <boost/shared_ptr.hpp>
  31 #include <memory>
  32
  33 namespace cppu
  34 {
  35     class OWeakObject;
  36 }
  37
  38 //........................................................................
  39 namespace svx
  40 {
  41 //........................................................................
  42
  43     //====================================================================
  44     //= IPropertyValueProvider
  45     //====================================================================
  46     /** a provider for a property value
  47     */
  48     class SVX_DLLPUBLIC IPropertyValueProvider
  49     {
  50     public:
  51         /** returns the name of the property which this provider is responsible for
  52         */
  53         virtual OUString getPropertyName() const = 0;
  54
  55         /** returns the current value of the property which the provider is responsible for
  56         */
  57         virtual void getCurrentValue( ::com::sun::star::uno::Any& _out_rValue ) const = 0;
  58
  59         virtual ~IPropertyValueProvider();
  60     };
  61     typedef ::boost::shared_ptr< IPropertyValueProvider >  PPropertyValueProvider;
  62
  63     //====================================================================
  64     //= PropertyValueProvider
  65     //====================================================================
  66     /** default implementation of a IPropertyValueProvider
  67
  68         This default implementation queries the object which it is constructed with for the XPropertySet interface,
  69         and calls the getPropertyValue method.
  70     */
  71     class SVX_DLLPUBLIC PropertyValueProvider   :public IPropertyValueProvider
  72                                                 ,public ::boost::noncopyable
  73     {
  74     public:
  75         PropertyValueProvider( ::cppu::OWeakObject& _rContext, const sal_Char* _pAsciiPropertyName )
  76             :m_rContext( _rContext )
  77             ,m_sPropertyName( OUString::createFromAscii( _pAsciiPropertyName ) )
  78         {
  79         }
  80
  81         virtual OUString getPropertyName() const;
  82         virtual void getCurrentValue( ::com::sun::star::uno::Any& _out_rValue ) const;
  83
  84     protected:
  85         ::cppu::OWeakObject&    getContext() const { return m_rContext; }
  86     private:
  87         ::cppu::OWeakObject&    m_rContext;
  88         const OUString   m_sPropertyName;
  89     };
  90
  91     //====================================================================
  92     //= PropertyChangeNotifier
  93     //====================================================================
  94     struct PropertyChangeNotifier_Data;
  95
  96     /** helper class for notifying XPropertyChangeListeners
  97
  98         The class is intended to be held as member of the class which does the property change broadcasting.
  99     */
 100     class SVX_DLLPUBLIC PropertyChangeNotifier : public ::boost::noncopyable
 101     {
 102     public:
 103         /** constructs a notifier instance
 104
 105             @param _rOwner
 106                 the owner instance of the notifier. Will be used as css.lang.EventObject.Source when
 107                 notifying events.
 108         */
 109         PropertyChangeNotifier( ::cppu::OWeakObject& _rOwner, ::osl::Mutex& _rMutex );
 110         ~PropertyChangeNotifier();
 111
 112         // listener maintanance
 113         void addPropertyChangeListener( const OUString& _rPropertyName, const ::com::sun::star::uno::Reference< ::com::sun::star::beans::XPropertyChangeListener >& _rxListener );
 114         void removePropertyChangeListener( const OUString& _rPropertyName, const ::com::sun::star::uno::Reference< ::com::sun::star::beans::XPropertyChangeListener >& _rxListener );
 115
 116         /** registers a IPropertyValueProvider
 117         */
 118         void    registerProvider( const ShapeProperty _eProperty, const PPropertyValueProvider _pProvider );
 119
 120         /** notifies changes in the given property to all registered listeners
 121
 122             If no property value provider for the given property ID is registered, this is worth an assertion in a
 123             non-product build, and otherwise ignored.
 124         */
 125         void    notifyPropertyChange( const ShapeProperty _eProperty ) const;
 126
 127         /** is called to dispose the instance
 128         */
 129         void    disposing();
 130
 131     private:
 132         ::std::auto_ptr< PropertyChangeNotifier_Data >  m_pData;
 133     };
 134
 135 //........................................................................
 136 } // namespace svx
 137 //........................................................................
 138
 139 #endif // SVX_PROPERTYCHANGENOTIFIER_HXX
 140
 141 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */