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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_SVX_SHAPEPROPERTYNOTIFIER_HXX
#define INCLUDED_SVX_SHAPEPROPERTYNOTIFIER_HXX
#include <svx/svxdllapi.h>
#include <svx/shapeproperty.hxx>
#include <comphelper/multiinterfacecontainer3.hxx>
#include <rtl/ustring.hxx>
#include <memory>
#include <unordered_map>
namespace com::sun::star::beans { class XPropertyChangeListener; }
namespace com::sun::star::uno { class Any; }
namespace com::sun::star::uno { template <typename > class Reference; }
namespace osl { class Mutex; }
namespace cppu
{
class OWeakObject;
}
namespace svx
{
//= IPropertyValueProvider
/** a provider for a property value
*/
class SVXCORE_DLLPUBLIC IPropertyValueProvider
{
public:
/** returns the name of the property which this provider is responsible for
*/
virtual OUString getPropertyName() const = 0;
/** returns the current value of the property which the provider is responsible for
*/
virtual void getCurrentValue( css::uno::Any& _out_rValue ) const = 0;
virtual ~IPropertyValueProvider();
};
//= PropertyValueProvider
/** default implementation of an IPropertyValueProvider
This default implementation queries the object which it is constructed with for the XPropertySet interface,
and calls the getPropertyValue method.
*/
class SVXCORE_DLLPUBLIC PropertyValueProvider :public IPropertyValueProvider
{
public:
PropertyValueProvider( ::cppu::OWeakObject& _rContext, const char* _pAsciiPropertyName )
:m_rContext( _rContext )
,m_sPropertyName( OUString::createFromAscii( _pAsciiPropertyName ) )
{
}
virtual OUString getPropertyName() const override;
virtual void getCurrentValue( css::uno::Any& _out_rValue ) const override;
protected:
::cppu::OWeakObject& getContext() const { return m_rContext; }
PropertyValueProvider(const PropertyValueProvider&) = delete;
PropertyValueProvider& operator=(const PropertyValueProvider&) = delete;
private:
::cppu::OWeakObject& m_rContext;
const OUString m_sPropertyName;
};
/** helper class for notifying XPropertyChangeListeners
The class is intended to be held as member of the class which does the property change broadcasting.
*/
class SVXCORE_DLLPUBLIC PropertyChangeNotifier
{
public:
/** constructs a notifier instance
@param _rOwner
the owner instance of the notifier. Will be used as css.lang.EventObject.Source when
notifying events.
*/
PropertyChangeNotifier( ::cppu::OWeakObject& _rOwner, ::osl::Mutex& _rMutex );
~PropertyChangeNotifier();
// listener maintenance
void addPropertyChangeListener( const OUString& _rPropertyName, const css::uno::Reference< css::beans::XPropertyChangeListener >& _rxListener );
void removePropertyChangeListener( const OUString& _rPropertyName, const css::uno::Reference< css::beans::XPropertyChangeListener >& _rxListener );
/** registers an IPropertyValueProvider
*/
void registerProvider( const ShapeProperty _eProperty, const std::shared_ptr<IPropertyValueProvider>& _rProvider );
/** notifies changes in the given property to all registered listeners
If no property value provider for the given property ID is registered, this is worth an assertion in a
non-product build, and otherwise ignored.
*/
void notifyPropertyChange( const ShapeProperty _eProperty ) const;
/** is called to dispose the instance
*/
void disposing();
private:
PropertyChangeNotifier(const PropertyChangeNotifier&) = delete;
PropertyChangeNotifier& operator=(const PropertyChangeNotifier&) = delete;
struct ShapePropertyHash
{
size_t operator()( svx::ShapeProperty x ) const
{
return size_t( x );
}
};
typedef std::unordered_map< ShapeProperty, std::shared_ptr<IPropertyValueProvider>, ShapePropertyHash >
PropertyProviders;
::cppu::OWeakObject& m_rContext;
PropertyProviders m_aProviders;
comphelper::OMultiTypeInterfaceContainerHelperVar3<css::beans::XPropertyChangeListener, OUString> m_aPropertyChangeListeners;
};
}
#endif // INCLUDED_SVX_SHAPEPROPERTYNOTIFIER_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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