mirror of
https://github.com/xiaoyifang/goldendict-ng.git
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150 lines
5.2 KiB
C++
150 lines
5.2 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the Qt Solutions component.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
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** of its contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qtsinglecoreapplication.h"
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#include "qtlocalpeer.h"
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/*!
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\class QtSingleCoreApplication qtsinglecoreapplication.h
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\brief A variant of the QtSingleApplication class for non-GUI applications.
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This class is a variant of QtSingleApplication suited for use in
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console (non-GUI) applications. It is an extension of
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QCoreApplication (instead of QApplication). It does not require
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the QtGui library.
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The API and usage is identical to QtSingleApplication, except that
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functions relating to the "activation window" are not present, for
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obvious reasons. Please refer to the QtSingleApplication
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documentation for explanation of the usage.
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A QtSingleCoreApplication instance can communicate to a
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QtSingleApplication instance if they share the same application
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id. Hence, this class can be used to create a light-weight
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command-line tool that sends commands to a GUI application.
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\sa QtSingleApplication
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*/
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/*!
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Creates a QtSingleCoreApplication object. The application identifier
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will be QCoreApplication::applicationFilePath(). \a argc and \a
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argv are passed on to the QCoreAppliation constructor.
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*/
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QtSingleCoreApplication::QtSingleCoreApplication(int &argc, char **argv)
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: QCoreApplication(argc, argv)
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{
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peer = new QtLocalPeer(this);
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connect(peer, SIGNAL(messageReceived(const QString&)), SIGNAL(messageReceived(const QString&)));
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}
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/*!
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Creates a QtSingleCoreApplication object with the application
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identifier \a appId. \a argc and \a argv are passed on to the
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QCoreAppliation constructor.
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*/
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QtSingleCoreApplication::QtSingleCoreApplication(const QString &appId, int &argc, char **argv)
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: QCoreApplication(argc, argv)
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{
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peer = new QtLocalPeer(this, appId);
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connect(peer, SIGNAL(messageReceived(const QString&)), SIGNAL(messageReceived(const QString&)));
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}
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/*!
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Returns true if another instance of this application is running;
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otherwise false.
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This function does not find instances of this application that are
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being run by a different user (on Windows: that are running in
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another session).
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\sa sendMessage()
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*/
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bool QtSingleCoreApplication::isRunning()
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{
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return peer->isClient();
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}
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/*!
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Tries to send the text \a message to the currently running
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instance. The QtSingleCoreApplication object in the running instance
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will emit the messageReceived() signal when it receives the
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message.
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This function returns true if the message has been sent to, and
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processed by, the current instance. If there is no instance
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currently running, or if the running instance fails to process the
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message within \a timeout milliseconds, this function return false.
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\sa isRunning(), messageReceived()
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*/
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bool QtSingleCoreApplication::sendMessage(const QString &message, int timeout)
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{
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return peer->sendMessage(message, timeout);
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}
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/*!
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Returns the application identifier. Two processes with the same
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identifier will be regarded as instances of the same application.
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*/
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QString QtSingleCoreApplication::id() const
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{
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return peer->applicationId();
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}
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/*!
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\fn void QtSingleCoreApplication::messageReceived(const QString& message)
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This signal is emitted when the current instance receives a \a
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message from another instance of this application.
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\sa sendMessage()
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*/
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