include/svx/shapepropertynotifier.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
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   9  * This file incorporates work covered by the following license notice:
  10  *
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  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
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  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 #ifndef INCLUDED_SVX_SHAPEPROPERTYNOTIFIER_HXX
  21 #define INCLUDED_SVX_SHAPEPROPERTYNOTIFIER_HXX
  22
  23 #include <svx/svxdllapi.h>
  24 #include <svx/shapeproperty.hxx>
  25 #include <rtl/ustring.hxx>
  26
  27 #include <memory>
  28
  29 namespace com::sun::star::beans { class XPropertyChangeListener; }
  30 namespace com::sun::star::uno { class Any; }
  31 namespace com::sun::star::uno { template <typename > class Reference; }
  32 namespace osl { class Mutex; }
  33
  34 namespace cppu
  35 {
  36     class OWeakObject;
  37 }
  38
  39
  40 namespace svx
  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( css::uno::Any& _out_rValue ) const = 0;
  58
  59         virtual ~IPropertyValueProvider();
  60     };
  61
  62     //= PropertyValueProvider
  63
  64     /** default implementation of a IPropertyValueProvider
  65
  66         This default implementation queries the object which it is constructed with for the XPropertySet interface,
  67         and calls the getPropertyValue method.
  68     */
  69     class SVX_DLLPUBLIC PropertyValueProvider   :public IPropertyValueProvider
  70     {
  71     public:
  72         PropertyValueProvider( ::cppu::OWeakObject& _rContext, const sal_Char* _pAsciiPropertyName )
  73             :m_rContext( _rContext )
  74             ,m_sPropertyName( OUString::createFromAscii( _pAsciiPropertyName ) )
  75         {
  76         }
  77
  78         virtual OUString getPropertyName() const override;
  79         virtual void getCurrentValue( css::uno::Any& _out_rValue ) const override;
  80
  81     protected:
  82         ::cppu::OWeakObject&    getContext() const { return m_rContext; }
  83         PropertyValueProvider(const PropertyValueProvider&) = delete;
  84         PropertyValueProvider& operator=(const PropertyValueProvider&) = delete;
  85
  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
 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 maintenance
 113         void addPropertyChangeListener( const OUString& _rPropertyName, const css::uno::Reference< css::beans::XPropertyChangeListener >& _rxListener );
 114         void removePropertyChangeListener( const OUString& _rPropertyName, const css::uno::Reference< css::beans::XPropertyChangeListener >& _rxListener );
 115
 116         /** registers a IPropertyValueProvider
 117         */
 118         void    registerProvider( const ShapeProperty _eProperty, const std::shared_ptr<IPropertyValueProvider>& _rProvider );
 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         PropertyChangeNotifier(const PropertyChangeNotifier&) = delete;
 133         PropertyChangeNotifier& operator=(const PropertyChangeNotifier&) = delete;
 134
 135         std::unique_ptr< PropertyChangeNotifier_Data >  m_xData;
 136     };
 137
 138
 139 }
 140
 141
 142 #endif // INCLUDED_SVX_SHAPEPROPERTYNOTIFIER_HXX
 143
 144 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */