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| -rw-r--r-- | sdext/source/presenter/PresenterConfigurationAccess.hxx | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/sdext/source/presenter/PresenterConfigurationAccess.hxx b/sdext/source/presenter/PresenterConfigurationAccess.hxx new file mode 100644 index 000000000..5b6517e1f --- /dev/null +++ b/sdext/source/presenter/PresenterConfigurationAccess.hxx @@ -0,0 +1,177 @@ +/* -*- 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_SDEXT_SOURCE_PRESENTER_PRESENTERCONFIGURATIONACCESS_HXX +#define INCLUDED_SDEXT_SOURCE_PRESENTER_PRESENTERCONFIGURATIONACCESS_HXX + +#include <rtl/ustring.hxx> +#include <com/sun/star/beans/XPropertySet.hpp> +#include <com/sun/star/container/XNameAccess.hpp> +#include <com/sun/star/container/XHierarchicalNameAccess.hpp> +#include <com/sun/star/uno/XComponentContext.hpp> + +#include <vector> +#include <functional> + +namespace sdext::presenter { + +/** This class gives access to the configuration. Create an object of this + class for one node of the configuration. This will be the root node. + From this one you can use this class in two ways. + + <p>In a stateless mode (with exception of the root node) you can use static + methods for obtaining child nodes, get values from properties at leaf + nodes and iterate over children of inner nodes.</p> + + <p>In a stateful mode use non-static methods like GoToChild() to + navigate to children.</p> + + <p>Note to call CommitChanges() after making changes to + PresenterConfigurationAccess object that was opened in READ_WRITE mode.</p> +*/ +class PresenterConfigurationAccess +{ +public: + enum WriteMode { READ_WRITE, READ_ONLY }; + typedef ::std::function<bool ( + const OUString&, + const css::uno::Reference<css::beans::XPropertySet>&)> Predicate; + static const OUString msPresenterScreenRootName; + + /** Create a new object to access the configuration entries below the + given root. + @param rsRootName + Name of the root. You can use msPresenterScreenRootName to + access the configuration of the presenter screen. + @param eMode + This flag specifies whether to give read-write or read-only + access. + */ + PresenterConfigurationAccess( + const css::uno::Reference<css::uno::XComponentContext>& rxContext, + const OUString& rsRootName, + WriteMode eMode); + + ~PresenterConfigurationAccess(); + + /** Return a configuration node below the root of the called object. + @param rsPathToNode + The relative path from the root (as given the constructor) to the node. + */ + css::uno::Any GetConfigurationNode ( + const OUString& rsPathToNode); + + /** Return <TRUE/> when opening the configuration (via creating a new + PresenterConfigurationAccess object) or previous calls to + GoToChild() left the called PresenterConfigurationAccess object in a + valid state. + */ + bool IsValid() const; + + /** Move the focused node to the (possibly indirect) child specified by the given path. + */ + bool GoToChild (const OUString& rsPathToNode); + + /** Move the focused node to the first direct child that fulfills the given predicate. + */ + bool GoToChild (const Predicate& rPredicate); + + /** Modify the property child of the currently focused node. Keep in + mind to call CommitChanges() to write the change back to the + configuration. + */ + bool SetProperty (const OUString& rsPropertyName, const css::uno::Any& rValue); + + /** Return a configuration node below the given node. + @param rxNode + The node that acts as root to the given relative path. + @param rsPathToNode + The relative path from the given node to the requested node. + When this string is empty then rxNode is returned. + @return + The type of the returned node varies with the requested node. + It is empty when the node was not found. + */ + static css::uno::Any GetConfigurationNode ( + const css::uno::Reference<css::container::XHierarchicalNameAccess>& rxNode, + const OUString& rsPathToNode); + + static css::uno::Reference<css::beans::XPropertySet> GetNodeProperties ( + const css::uno::Reference<css::container::XHierarchicalNameAccess>& rxNode, + const OUString& rsPathToNode); + + /** Write any changes that have been made back to the configuration. + This call is ignored when the called ConfigurationAccess object was + not create with read-write mode. + */ + void CommitChanges(); + + typedef ::std::function<void ( + const ::std::vector<css::uno::Any>&) > ItemProcessor; + typedef ::std::function<void ( + const OUString&, + const css::uno::Reference<css::beans::XPropertySet>&) > PropertySetProcessor; + + /** Execute a functor for all elements of the given container. + @param rxContainer + The container is a XNameAccess to a list of the configuration. + This can be a node returned by GetConfigurationNode(). + @param rArguments + The functor is called with arguments that are children of each + element of the container. The set of children is specified this + list. + @param rFunctor + The functor to be executed for some or all of the elements in + the given container. + */ + static void ForAll ( + const css::uno::Reference<css::container::XNameAccess>& rxContainer, + const ::std::vector<OUString>& rArguments, + const ItemProcessor& rProcessor); + static void ForAll ( + const css::uno::Reference<css::container::XNameAccess>& rxContainer, + const PropertySetProcessor& rProcessor); + + static css::uno::Any Find ( + const css::uno::Reference<css::container::XNameAccess>& rxContainer, + const Predicate& rPredicate); + + static bool IsStringPropertyEqual ( + const OUString& rsValue, + const OUString& rsPropertyName, + const css::uno::Reference<css::beans::XPropertySet>& rxNode); + + /** This method wraps a call to getPropertyValue() and returns an empty + Any instead of throwing an exception when the property does not + exist. + */ + static css::uno::Any GetProperty ( + const css::uno::Reference<css::beans::XPropertySet>& rxProperties, + const OUString& rsKey); + +private: + css::uno::Reference<css::uno::XInterface> mxRoot; + css::uno::Any maNode; +}; + +} // end of namespace sdext::tools + +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |