00ecf7899a
Change-Id: Ic008e244b8ae1888fa45379371f5525ee77f6087 Reviewed-on: https://gerrit.libreoffice.org/22887 Tested-by: Jenkins <ci@libreoffice.org> Reviewed-by: Michael Stahl <mstahl@redhat.com>
175 lines
6.2 KiB
C++
175 lines
6.2 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_COMPHELPER_NUMBEREDCOLLECTION_HXX
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#define INCLUDED_COMPHELPER_NUMBEREDCOLLECTION_HXX
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#include <comphelper/comphelperdllapi.h>
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#include <com/sun/star/uno/Reference.hxx>
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#include <com/sun/star/lang/IllegalArgumentException.hpp>
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#include <com/sun/star/uno/XInterface.hpp>
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#include <com/sun/star/frame/XUntitledNumbers.hpp>
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#include <cppuhelper/basemutex.hxx>
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#include <cppuhelper/weakref.hxx>
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#include <cppuhelper/implbase.hxx>
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#include <functional>
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#include <unordered_map>
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#include <vector>
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namespace comphelper{
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/** @short defines a collection of UNO components, where every component will get its own unique number.
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@descr Such number will be unique at runtime only... but it supports fragmentation.
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Note: This collection uses weak references only to know her components.
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So lifetime of these components must be controlled outside.
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@threadsafe
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*/
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class COMPHELPER_DLLPUBLIC NumberedCollection : private ::cppu::BaseMutex
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, public ::cppu::WeakImplHelper< css::frame::XUntitledNumbers >
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{
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// types, const
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private:
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struct TNumberedItem
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{
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css::uno::WeakReference< css::uno::XInterface > xItem;
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::sal_Int32 nNumber;
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};
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typedef std::unordered_map<
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long,
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TNumberedItem > TNumberedItemHash;
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typedef ::std::vector< long > TDeadItemList;
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// interface
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public:
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/** @short lightweight constructor.
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*/
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NumberedCollection();
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/** @short free all internally used resources.
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*/
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virtual ~NumberedCollection();
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/** set an outside component which uses this container and must be set
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as source of all broadcasted messages, exceptions.
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It's holded weak only so we do not need any complex dispose sessions.
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Note: Passing NULL as parameter will be allowed. It will reset the internal
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member reference only.
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@param xOwner
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the new owner of this collection.
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*/
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void setOwner (const css::uno::Reference< css::uno::XInterface >& xOwner);
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/** set the localized prefix to be used for untitled components.
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Localization has to be done outside. This container will return
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those value then. There are no further checks. Its up to you to define
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a suitable string here :-)
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@param sPrefix
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the new prefix for untitled components.
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*/
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void setUntitledPrefix(const OUString& sPrefix);
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/** @see css.frame.XUntitledNumbers */
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virtual ::sal_Int32 SAL_CALL leaseNumber(const css::uno::Reference< css::uno::XInterface >& xComponent)
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throw (css::lang::IllegalArgumentException,
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css::uno::RuntimeException, std::exception ) override;
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/** @see css.frame.XUntitledNumbers */
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virtual void SAL_CALL releaseNumber(::sal_Int32 nNumber)
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throw (css::lang::IllegalArgumentException,
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css::uno::RuntimeException, std::exception ) override;
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/** @see css.frame.XUntitledNumbers */
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virtual void SAL_CALL releaseNumberForComponent(const css::uno::Reference< css::uno::XInterface >& xComponent)
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throw (css::lang::IllegalArgumentException,
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css::uno::RuntimeException, std::exception ) override;
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/** @see css.frame.XUntitledNumbers */
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virtual OUString SAL_CALL getUntitledPrefix()
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throw (css::uno::RuntimeException, std::exception) override;
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// internal
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private:
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/** @short trys to find an unique number not already used within this collection.
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@descr It reuses the smallest number which isn't used by any component
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of this collection. (fragmentation!) If collection is full (means there
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is no free number) the special value INVALID_NUMBER will be returned.
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@note Those method can't be called within a multithreaded environment ..
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Because such number wont be "reserved" for the calli of these method
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it can happen that two calls returns the same number (reasoned by the fact that first calli
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doesn't used the returned number already.
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So the outside code has to make sure that retrieving and using of those number
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will be an atomic operation.
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@return an unique number or special value INVALID_NUMBER if collection is full.
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*/
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::sal_Int32 impl_searchFreeNumber ();
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static void impl_cleanUpDeadItems ( TNumberedItemHash& lItems ,
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const TDeadItemList& lDeadItems);
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// member
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private:
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/// localized string to be used for untitled components
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OUString m_sUntitledPrefix;
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/// cache of all "leased numbers" and its bound components
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TNumberedItemHash m_lComponents;
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/// used as source of broadcasted messages or exceptions (can be null !)
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css::uno::WeakReference< css::uno::XInterface > m_xOwner;
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};
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} // namespace comphelper
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#endif // INCLUDED_COMPHELPER_NUMBEREDCOLLECTION_HXX
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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