77 lines
2.6 KiB
C++
77 lines
2.6 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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#pragma once
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#include <vcl/timer.hxx>
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#include <memory>
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#include <functional>
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namespace sd::tools
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{
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/** Store a function object and execute it asynchronous.
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The features of this class are:
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a) It provides a wrapper around a VCL Timer so that generic function
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objects can be used.
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b) When more than one function objects are posted to be executed later
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then the pending ones are erased and only the last one will actually be
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executed.
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Use this class like this:
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aInstanceOfAsynchronousCall.Post(
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::std::bind(
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::std::mem_fun(&DrawViewShell::SwitchPage),
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pDrawViewShell,
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11));
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*/
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class AsynchronousCall
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{
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public:
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/** Create a new asynchronous call. Each object of this class processes
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one (semantical) type of call.
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*/
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AsynchronousCall();
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~AsynchronousCall();
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/** Post a function object that is to be executed asynchronously. When
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this method is called while the current function object has not been
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executed then the latter is destroyed and only the given function
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object will be executed.
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@param rFunction
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The function object that may be called asynchronously in the
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near future.
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*/
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typedef ::std::function<void()> AsynchronousFunction;
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void Post(const AsynchronousFunction& rFunction);
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private:
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Timer maTimer;
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/** The function object that will be executed when the TimerCallback
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function is called the next time. This pointer may be NULL.
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*/
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::std::unique_ptr<AsynchronousFunction> mpFunction;
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DECL_LINK(TimerCallback, Timer*, void);
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};
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} // end of namespace ::sd::tools
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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