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diff --git a/include/comphelper/configuration.hxx b/include/comphelper/configuration.hxx
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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/.
+ */
+
+#ifndef INCLUDED_COMPHELPER_CONFIGURATION_HXX
+#define INCLUDED_COMPHELPER_CONFIGURATION_HXX
+
+#include <sal/config.h>
+
+#include <optional>
+#include <string_view>
+
+#include <com/sun/star/uno/Any.hxx>
+#include <com/sun/star/uno/Reference.h>
+#include <comphelper/comphelperdllapi.h>
+#include <comphelper/processfactory.hxx>
+#include <sal/types.h>
+#include <memory>
+
+namespace com::sun::star {
+ namespace configuration { class XReadWriteAccess; }
+ namespace container {
+ class XHierarchicalNameAccess;
+ class XHierarchicalNameReplace;
+ class XNameAccess;
+ class XNameContainer;
+ }
+ namespace uno { class XComponentContext; }
+}
+
+namespace comphelper {
+
+namespace detail { class ConfigurationWrapper; }
+
+/// A batch of configuration changes that is committed as a whole.
+///
+/// Client code needs to call commit explicitly; otherwise the changes are lost
+/// when the instance is destroyed.
+///
+/// This is the only class from this header file that client code should use
+/// directly.
+class COMPHELPER_DLLPUBLIC ConfigurationChanges {
+public:
+ static std::shared_ptr<ConfigurationChanges> create();
+
+ ~ConfigurationChanges();
+
+ void commit() const;
+
+private:
+ ConfigurationChanges(const ConfigurationChanges&) = delete;
+ ConfigurationChanges& operator=(const ConfigurationChanges&) = delete;
+
+ SAL_DLLPRIVATE ConfigurationChanges(
+ css::uno::Reference< css::uno::XComponentContext >
+ const & context);
+
+ SAL_DLLPRIVATE void setPropertyValue(
+ OUString const & path, css::uno::Any const & value)
+ const;
+
+ SAL_DLLPRIVATE css::uno::Reference<
+ css::container::XHierarchicalNameReplace >
+ getGroup(OUString const & path) const;
+
+ SAL_DLLPRIVATE
+ css::uno::Reference< css::container::XNameContainer >
+ getSet(OUString const & path) const;
+
+ css::uno::Reference<
+ css::configuration::XReadWriteAccess > access_;
+
+ friend class detail::ConfigurationWrapper;
+};
+
+namespace detail {
+
+/// @internal
+class COMPHELPER_DLLPUBLIC ConfigurationWrapper {
+public:
+ static ConfigurationWrapper const & get();
+
+ bool isReadOnly(OUString const & path) const;
+
+ css::uno::Any getPropertyValue(std::u16string_view path) const;
+
+ static void setPropertyValue(
+ std::shared_ptr< ConfigurationChanges > const & batch,
+ OUString const & path, css::uno::Any const & value);
+
+ css::uno::Any getLocalizedPropertyValue(
+ std::u16string_view path) const;
+
+ static void setLocalizedPropertyValue(
+ std::shared_ptr< ConfigurationChanges > const & batch,
+ OUString const & path, css::uno::Any const & value);
+
+ css::uno::Reference<
+ css::container::XHierarchicalNameAccess >
+ getGroupReadOnly(OUString const & path) const;
+
+ static css::uno::Reference<
+ css::container::XHierarchicalNameReplace >
+ getGroupReadWrite(
+ std::shared_ptr< ConfigurationChanges > const & batch,
+ OUString const & path);
+
+ css::uno::Reference< css::container::XNameAccess >
+ getSetReadOnly(OUString const & path) const;
+
+ static css::uno::Reference< css::container::XNameContainer >
+ getSetReadWrite(
+ std::shared_ptr< ConfigurationChanges > const & batch,
+ OUString const & path);
+
+ std::shared_ptr< ConfigurationChanges > createChanges() const;
+
+private:
+ SAL_DLLPRIVATE explicit ConfigurationWrapper();
+
+ SAL_DLLPRIVATE ~ConfigurationWrapper();
+
+ ConfigurationWrapper(const ConfigurationWrapper&) = delete;
+ ConfigurationWrapper& operator=(const ConfigurationWrapper&) = delete;
+
+ css::uno::Reference< css::uno::XComponentContext > context_;
+
+ css::uno::Reference< css::configuration::XReadWriteAccess > access_;
+ // should really be a css.configuration.ReadOnlyAccess (with added
+ // css.beans.XHierarchicalPropertySetInfo), but then
+ // configmgr::Access::asProperty() would report all properties as
+ // READONLY, so isReadOnly() would not work
+};
+
+/// @internal
+template< typename T > struct Convert {
+ static css::uno::Any toAny(T const & value)
+ { return css::uno::Any(value); }
+
+ static T fromAny(css::uno::Any const & value)
+ { return value.get< T >(); }
+
+private:
+ Convert(const Convert&) = delete;
+ Convert& operator=(const Convert&) = delete;
+
+ Convert() = delete;
+ ~Convert() = delete;
+};
+
+/// @internal
+template< typename T > struct Convert< std::optional< T > >
+{
+ static css::uno::Any toAny(std::optional< T > const & value) {
+ return value
+ ? css::uno::Any(*value)
+ : css::uno::Any();
+ }
+
+ static std::optional< T > fromAny(css::uno::Any const & value)
+ {
+ return value.hasValue()
+ ? std::optional< T >(value.get< T >()) : std::optional< T >();
+ }
+
+private:
+ Convert(const Convert&) = delete;
+ Convert& operator=(const Convert&) = delete;
+
+ Convert() = delete;
+ ~Convert() = delete;
+};
+
+}
+
+/// A type-safe wrapper around a (non-localized) configuration property.
+///
+/// Automatically generated headers for the various configuration properties
+/// derive from this template and make available its member functions to access
+/// each given configuration property.
+template< typename T, typename U > struct ConfigurationProperty
+{
+ /// Get the read-only status of the given (non-localized) configuration
+ /// property.
+ static bool isReadOnly()
+ {
+ return detail::ConfigurationWrapper::get().isReadOnly(T::path());
+ }
+
+ /// Get the value of the given (non-localized) configuration property.
+ ///
+ /// For nillable properties, U is of type std::optional<U'>.
+ static U get()
+ {
+ // Folding this into one statement causes a bogus error at least with
+ // Red Hat GCC 4.6.2-1:
+ css::uno::Any a(
+ detail::ConfigurationWrapper::get().getPropertyValue(
+ T::path()));
+ return detail::Convert< U >::fromAny(a);
+ }
+
+ /// Set the value of the given (non-localized) configuration property, via a
+ /// given changes batch.
+ ///
+ /// For nillable properties, U is of type std::optional<U'>.
+ static void set(
+ U const & value,
+ std::shared_ptr< ConfigurationChanges > const & batch)
+ {
+ comphelper::detail::ConfigurationWrapper::setPropertyValue(
+ batch, T::path(), detail::Convert< U >::toAny(value));
+ }
+
+private:
+ ConfigurationProperty(const ConfigurationProperty&) = delete;
+ ConfigurationProperty& operator=(const ConfigurationProperty&) = delete;
+
+ ConfigurationProperty() = delete;
+ ~ConfigurationProperty() = delete;
+};
+
+/// A type-safe wrapper around a localized configuration property.
+///
+/// Automatically generated headers for the various localized configuration
+/// properties derive from this template and make available its member functions
+/// to access each given localized configuration property.
+template< typename T, typename U > struct ConfigurationLocalizedProperty
+{
+ /// Get the value of the given localized configuration property, for the
+ /// locale currently set at the
+ /// com.sun.star.configuration.theDefaultProvider.
+ ///
+ /// For nillable properties, U is of type std::optional<U'>.
+ static U get()
+ {
+ // Folding this into one statement causes a bogus error at least with
+ // Red Hat GCC 4.6.2-1:
+ css::uno::Any a(
+ detail::ConfigurationWrapper::get().
+ getLocalizedPropertyValue(T::path()));
+ return detail::Convert< U >::fromAny(a);
+ }
+
+ /// Set the value of the given localized configuration property, for the
+ /// locale currently set at the
+ /// com.sun.star.configuration.theDefaultProvider, via a given changes
+ /// batch.
+ ///
+ /// For nillable properties, U is of type std::optional<U'>.
+ static void set(
+ U const & value,
+ std::shared_ptr< ConfigurationChanges > const & batch)
+ {
+ comphelper::detail::ConfigurationWrapper::setLocalizedPropertyValue(
+ batch, T::path(), detail::Convert< U >::toAny(value));
+ }
+
+private:
+ ConfigurationLocalizedProperty(const ConfigurationLocalizedProperty&) = delete;
+ ConfigurationLocalizedProperty& operator=(const ConfigurationLocalizedProperty&) = delete;
+
+ ConfigurationLocalizedProperty() = delete;
+ ~ConfigurationLocalizedProperty() = delete;
+};
+
+/// A type-safe wrapper around a configuration group.
+///
+/// Automatically generated headers for the various configuration groups derive
+/// from this template and make available its member functions to access each
+/// given configuration group.
+template< typename T > struct ConfigurationGroup {
+ /// Get read-only access to the given configuration group.
+ static css::uno::Reference<
+ css::container::XHierarchicalNameAccess >
+ get()
+ {
+ return detail::ConfigurationWrapper::get().getGroupReadOnly(
+ T::path());
+ }
+
+ /// Get read/write access to the given configuration group, storing any
+ /// modifications via the given changes batch.
+ static css::uno::Reference<
+ css::container::XHierarchicalNameReplace >
+ get(std::shared_ptr< ConfigurationChanges > const & batch)
+ {
+ return comphelper::detail::ConfigurationWrapper::getGroupReadWrite(
+ batch, T::path());
+ }
+
+private:
+ ConfigurationGroup(const ConfigurationGroup&) = delete;
+ ConfigurationGroup& operator=(const ConfigurationGroup&) = delete;
+
+ ConfigurationGroup() = delete;
+ ~ConfigurationGroup() = delete;
+};
+
+/// A type-safe wrapper around a configuration set.
+///
+/// Automatically generated headers for the various configuration sets derive
+/// from this template and make available its member functions to access each
+/// given configuration set.
+template< typename T > struct ConfigurationSet {
+ /// Get read-only access to the given configuration set.
+ static
+ css::uno::Reference< css::container::XNameAccess >
+ get()
+ {
+ return detail::ConfigurationWrapper::get().getSetReadOnly(
+ T::path());
+ }
+
+ /// Get read/write access to the given configuration set, storing any
+ /// modifications via the given changes batch.
+ static
+ css::uno::Reference< css::container::XNameContainer >
+ get(std::shared_ptr< ConfigurationChanges > const & batch)
+ {
+ return comphelper::detail::ConfigurationWrapper::getSetReadWrite(
+ batch, T::path());
+ }
+
+private:
+ ConfigurationSet(const ConfigurationSet&) = delete;
+ ConfigurationSet& operator=(const ConfigurationSet&) = delete;
+
+ ConfigurationSet() = delete;
+ ~ConfigurationSet() = delete;
+};
+
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */