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diff --git a/include/cppuhelper/propertysetmixin.hxx b/include/cppuhelper/propertysetmixin.hxx new file mode 100644 index 000000000..56887d9b7 --- /dev/null +++ b/include/cppuhelper/propertysetmixin.hxx @@ -0,0 +1,419 @@ +/* -*- 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_CPPUHELPER_PROPERTYSETMIXIN_HXX +#define INCLUDED_CPPUHELPER_PROPERTYSETMIXIN_HXX + +#include "sal/config.h" + +#include "com/sun/star/beans/XFastPropertySet.hpp" +#include "com/sun/star/beans/XPropertyAccess.hpp" +#include "com/sun/star/beans/XPropertySet.hpp" +#include "com/sun/star/uno/Reference.h" +#include "com/sun/star/uno/Sequence.hxx" +#include "sal/types.h" +#include "cppuhelper/cppuhelperdllapi.h" + +namespace com { namespace sun { namespace star { + namespace beans { + class XPropertyChangeListener; + class XPropertySetInfo; + class XVetoableChangeListener; + struct PropertyValue; + } + namespace uno { + class Type; + class XComponentContext; + } +} } } + +namespace cppu { + +/** + @short A helper base class for <code>cppu::PropertySetMixin</code>. + + See the documentation of <code>cppu::PropertySetMixin</code> for + further details. + + That <code>cppu::PropertySetMixin</code> is derived from this + base class should be considered an implementation detail. The functionality + of <code>cppu::PropertySetMixin</code> that is inherited from this base + class and is visible to subclasses of + <code>cppu::PropertySetMixin</code> should be treated by such + subclasses as being provided by <code>cppu::PropertySetMixin</code> + directly (e.g., in such subclasses, use + “<code>PropertySetMixin::Implements</code>” instead of + “<code>PropertySetMixinImpl::Implements</code>”). + + @since UDK 3.2.1 +*/ +#if defined __GNUC__ && !defined __clang__ +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wnon-virtual-dtor" +#endif +class CPPUHELPER_DLLPUBLIC PropertySetMixinImpl: + public css::beans::XPropertySet, + public css::beans::XFastPropertySet, + public css::beans::XPropertyAccess +{ +protected: + /** + @short Flags used by subclasses of + <code>cppu::PropertySetMixin</code> to specify what UNO interface + types shall be supported. + */ + enum Implements { + /** + @short Flag specifying that the UNO interface type + <code>css::beans::XPropertySet</code> shall be supported. + */ + IMPLEMENTS_PROPERTY_SET = 1, + + /** + @short Flag specifying that the UNO interface type + <code>css::beans::XFastPropertySet</code> shall be + supported. + */ + IMPLEMENTS_FAST_PROPERTY_SET = 2, + + /** + @short Flag specifying that the UNO interface type + <code>css::beans::XPropertyAccess</code> shall be + supported. + */ + IMPLEMENTS_PROPERTY_ACCESS = 4 + }; + + /** + @short A class used by subclasses of + <code>cppu::PropertySetMixin</code> when implementing UNO interface + type attribute setter functions. + + This class is not thread safe; that is, the constructor, + <code>notify</code>, and the destructor must be called from the same + thread. + + See <code>cppu::PropertySetMixinImpl::prepareSet</code> for + further details. + */ + class CPPUHELPER_DLLPUBLIC BoundListeners { + public: + /** + @short The constructor. + + May throw <code>std::bad_alloc</code>. + */ + BoundListeners(); + + /** + @short The destructor. + + Does not throw. + */ + ~BoundListeners(); + + /** + @short Notifies any + <code>css::beans::XPropertyChangeListener</code>s. + + May throw <code>css::uno::RuntimeException</code> + and <code>std::bad_alloc</code>. + + See <code>cppu::PropertySetMixinImpl::prepareSet</code> + for further details. + */ + void notify() const; + + private: + BoundListeners( const BoundListeners&) SAL_DELETED_FUNCTION; + void operator=( const BoundListeners&) SAL_DELETED_FUNCTION; + + class Impl; + Impl * m_impl; + + friend class PropertySetMixinImpl; + }; + + /** + @short A function used by subclasses of + <code>cppu::PropertySetMixin</code> when implementing UNO interface + type attribute setter functions. + + First, this function checks whether this instance has already been + disposed (see <code>cppu::PropertySetMixinImpl::dispose</code>), + and throws a <code>css::lang::DisposedException</code> if + applicable. For a constrained attribute (whose setter can explicitly + raise <code>css::beans::PropertyVetoException</code>), this + function notifies any + <code>css::beans::XVetoableChangeListener</code>s. For a + bound attribute, this function modifies the passed-in + <code>boundListeners</code> so that it can afterwards be used to notify + any <code>css::beans::XPropertyChangeListener</code>s. This + function should be called before storing the new attribute value, and + <code>boundListeners->notify()</code> should be called exactly once after + storing the new attribute value (in case the attribute is bound; + otherwise, calling <code>boundListeners->notify()</code> is ignored). + Furthermore, <code>boundListeners->notify()</code> and this function have + to be called from the same thread. + + May throw + <code>css::beans::PropertyVetoException</code>, + <code>css::uno::RuntimeException</code> (and + <code>css::lang::DisposedException</code> in particular), and + <code>std::bad_alloc</code>. + + @param propertyName the name of the property (which is the same as the + name of the attribute that is going to be set) + + @param oldValue the property value corresponding to the old attribute + value. This is only used as + <code>css::beans::PropertyChangeEvent::OldValue</code>, which + is rather useless, anyway (see “Using the Observer Pattern” + in <a href="http://tools.openoffice.org/CodingGuidelines.sxw"> + OpenOffice.org Coding Guidelines</a>). If the attribute + that is going to be set is neither bound nor constrained, or if + <code>css::beans::PropertyChangeEvent::OldValue</code> should + not be set, a <code>VOID</code> <code>Any</code> can be used instead. + + @param newValue the property value corresponding to the new + attribute value. This is only used as + <code>css::beans::PropertyChangeEvent::NewValue</code>, which + is rather useless, anyway (see “Using the Observer Pattern” + in <a href="http://tools.openoffice.org/CodingGuidelines.sxw"> + OpenOffice.org Coding Guidelines</a>), <em>unless</em> the + attribute that is going to be set is constrained. If the attribute + that is going to be set is neither bound nor constrained, or if it is + only bound but + <code>css::beans::PropertyChangeEvent::NewValue</code> should + not be set, a <code>VOID</code> <code>Any</code> can be used instead. + + @param boundListeners a pointer to a fresh + <code>cppu::PropertySetMixinImpl::BoundListeners</code> instance + (which has not been passed to this function before, and on which + <code>notify</code> has not yet been called); may only be null if the + attribute that is going to be set is not bound + */ + void prepareSet( + rtl::OUString const & propertyName, + css::uno::Any const & oldValue, + css::uno::Any const & newValue, + BoundListeners * boundListeners); + + /** + @short Mark this instance as being disposed. + + See <code>css::lang::XComponent</code> for the general + concept of disposing UNO objects. On the first call to this function, + all registered listeners + (<code>css::beans::XPropertyChangeListener</code>s and + <code>css::beans::XVetoableChangeListener</code>s) are + notified of the disposing source. Any subsequent calls to this function + are ignored. + + May throw <code>css::uno::RuntimeException</code> and + <code>std::bad_alloc</code>. + */ + void dispose(); + + /** + @short A function used by subclasses of + <code>cppu::PropertySetMixin</code> when implementing + <code>css::uno::XInterface::queryInterface</code>. + + This function checks for support of any of the UNO interface types + specified in the call of the <code>cppu::PropertySetMixin</code> + constructor. It does not check for any other UNO interface types (not + even for <code>css::uno::XInterface</code>), and should not + be used directly as the implementation of + <code>css::uno::XInterface::queryInterface</code> of this UNO + object. + */ + virtual css::uno::Any SAL_CALL queryInterface( + css::uno::Type const & type) SAL_OVERRIDE; + + // @see css::beans::XPropertySet::getPropertySetInfo + virtual css::uno::Reference< css::beans::XPropertySetInfo > SAL_CALL getPropertySetInfo() SAL_OVERRIDE; + + // @see css::beans::XPropertySet::setPropertyValue + virtual void SAL_CALL setPropertyValue( + rtl::OUString const & propertyName, + css::uno::Any const & value) SAL_OVERRIDE; + + // @see css::beans::XPropertySet::getPropertyValue + virtual css::uno::Any SAL_CALL getPropertyValue( + rtl::OUString const & propertyName) SAL_OVERRIDE; + + /** + @short Adds a + <code>css::beans::XPropertyChangeListener</code>. + + If a listener is added more than once, it will receive all + relevant notifications multiple times. + + @see css::beans::XPropertySet::addPropertyChangeListener + */ + virtual void SAL_CALL addPropertyChangeListener( + rtl::OUString const & propertyName, + css::uno::Reference< + css::beans::XPropertyChangeListener > const & listener) SAL_OVERRIDE; + + // @see css::beans::XPropertySet::removePropertyChangeListener + virtual void SAL_CALL removePropertyChangeListener( + rtl::OUString const & propertyName, + css::uno::Reference< + css::beans::XPropertyChangeListener > const & listener) SAL_OVERRIDE; + + /** + @short Adds a + <code>css::beans::XVetoableChangeListener</code>. + + If a listener is added more than once, it will receive all + relevant notifications multiple times. + + @see css::beans::XPropertySet::addVetoableChangeListener + */ + virtual void SAL_CALL addVetoableChangeListener( + rtl::OUString const & propertyName, + css::uno::Reference< + css::beans::XVetoableChangeListener > const & listener) SAL_OVERRIDE; + + // @see css::beans::XPropertySet::removeVetoableChangeListener + virtual void SAL_CALL removeVetoableChangeListener( + rtl::OUString const & propertyName, + css::uno::Reference< + css::beans::XVetoableChangeListener > const & listener) SAL_OVERRIDE; + + // @see css::beans::XFastPropertySet::setFastPropertyValue + virtual void SAL_CALL setFastPropertyValue( + sal_Int32 handle, css::uno::Any const & value) SAL_OVERRIDE; + + // @see css::beans::XFastPropertySet::getFastPropertyValue + virtual css::uno::Any SAL_CALL getFastPropertyValue( + sal_Int32 handle) SAL_OVERRIDE; + + // @see css::beans::XPropertyAccess::getPropertyValues + virtual css::uno::Sequence< css::beans::PropertyValue > SAL_CALL getPropertyValues() SAL_OVERRIDE; + + // @see css::beans::XPropertyAccess::setPropertyValues + virtual void SAL_CALL setPropertyValues( + css::uno::Sequence< css::beans::PropertyValue > const & props) SAL_OVERRIDE; + +private: + PropertySetMixinImpl( const PropertySetMixinImpl&) SAL_DELETED_FUNCTION; + void operator=( const PropertySetMixinImpl&) SAL_DELETED_FUNCTION; + + PropertySetMixinImpl( + css::uno::Reference< css::uno::XComponentContext > const & context, + Implements implements, + css::uno::Sequence< rtl::OUString > const & absentOptional, + css::uno::Type const & type); + + class Impl; + Impl * m_impl; + + friend class Impl; + template< typename T > friend class PropertySetMixin; + + ~PropertySetMixinImpl(); + + void checkUnknown(rtl::OUString const & propertyName); +}; + +/** + @short A helper mixin to implement certain UNO interfaces related to property + set handling on top of the attributes of a given UNO interface type. + + The UNO interface type is specified by the type parameter + <code>T</code> (which must correspond to a UNO interface type). + + No specializations of this class template should be added by client + code. + + @since UDK 3.2.1 +*/ +template< typename T > class PropertySetMixin: public PropertySetMixinImpl { +protected: + /** + @short The constructor. + + May throw <code>css::uno::RuntimeException</code> and + <code>std::bad_alloc</code>. + + @param context the component context used by this class template; must + not be null, and must supply the + <code>com.sun.star.reflection.theCoreReflection</code> and + <code>com.sun.star.reflection.theTypeDescriptionManager</code> singletons + + @param implements a combination of zero or more flags specifying what + UNO interface types shall be supported + + @param absentOptional a list of optional properties that are not + present, and should thus not be visible via + <code>css::beans::XPropertySet::getPropertySetInfo</code>, + <code>css::beans::XPropertySet::addPropertyChangeListener<!-- + --></code>, <code>css::beans::XPropertySet::<!-- + -->removePropertyChangeListener</code>, + <code>css::beans::XPropertySet::addVetoableChangeListener<!-- + --></code>, and <code>css::beans::XPropertySet::<!-- + -->removeVetoableChangeListener</code>. For consistency reasons, the + given <code>absentOptional</code> should only contain the names of + attributes that represent optional properties that are not present (that + is, the attribute getters and setters always throw a + <code>css::beans::UnknownPropertyException</code>), and should + contain each such name only once. If an optional property is not present + (that is, the corresponding attribute getter and setter always throw a + <code>css::beans::UnknownPropertyException</code>) but is not + contained in the given <code>absentOptional</code>, then it will be + visible via + <code>css::beans::XPropertySet::getPropertySetInfo</code> as a + <code>css::beans::Property</code> with a set + <code>css::beans::PropertyAttribute::OPTIONAL</code>. If the + given <code>implements</code> specifies that + <code>css::beans::XPropertySet</code> is not supported, then + the given <code>absentOptional</code> is effectively ignored and can be + empty. + */ + PropertySetMixin( + css::uno::Reference< css::uno::XComponentContext > const & context, + Implements implements, + css::uno::Sequence< rtl::OUString > const & absentOptional): + PropertySetMixinImpl( + context, implements, absentOptional, T::static_type()) + {} + + /** + @short The destructor. + + Does not throw. + */ + ~PropertySetMixin() {} + +private: + PropertySetMixin( const PropertySetMixin&) SAL_DELETED_FUNCTION; + void operator=( const PropertySetMixin&) SAL_DELETED_FUNCTION; +}; +#if defined __GNUC__ && !defined __clang__ +#pragma GCC diagnostic pop +#endif + +} + +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |