# dcop Library API Documentation

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# dcopsignals.h

    00001 /*
    00002 Copyright (c) 2000 Waldo Bastian <bastian@kde.org>
    00003
    00004 Permission is hereby granted, free of charge, to any person obtaining a copy
    00005 of this software and associated documentation files (the "Software"), to deal
    00006 in the Software without restriction, including without limitation the rights
    00007 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    00008 copies of the Software, and to permit persons to whom the Software is
    00009 furnished to do so, subject to the following conditions:
    00010
    00011 The above copyright notice and this permission notice shall be included in
    00012 all copies or substantial portions of the Software.
    00013
    00014 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    00015 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    00016 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
    00017 AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
    00018 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    00019 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
    00020 */
    00021
    00022 #ifndef DCOPSIGNALS_H
    00023 #define DCOPSIGNALS_H "$Id: dcopsignals.h,v 1.5 2002/09/29 13:05:01 tjansen Exp $"
    00024
    00025 #include <qdict.h>
    00026 #include <qptrlist.h>
    00027 #include <qstring.h>
    00028
    00029 class DCOPConnection;
    00030
    00031 //
    00032 // This requires:
    00033 // DCOPSignalConnectionList * DCOPConnection::signalConnectionList()
    00035 class DCOPSignalConnection
    00036 {
    00037 public:
    00038    QCString sender;      // Sender client, empty means any client
    00039    DCOPConnection *senderConn; //Sender client.
    00040    QCString senderObj;   // Object that sends the signal.
    00041    QCString signal;      // Signal name. Connections are sorted on signal name.
    00042
    00043    DCOPConnection *recvConn; // Client that wants to receive the signal
    00044    QCString recvObj;     // Object that wants to receive the signal
    00045    QCString slot;        // Function to send to in the object.
    00046 };
    00047
    00049 class DCOPSignalConnectionList : public QPtrList<DCOPSignalConnection>
    00050 {
    00051 public:
    00052    DCOPSignalConnectionList() { };
    00053 };
    00054
    00058 class DCOPSignals
    00059 {
    00060 public:
    00061    DCOPSignals();
    00062
    00071    void emitSignal( DCOPConnection *conn, const QCString &fun, const QByteArray &data, bool excludeSelf);
    00072
    00087    bool connectSignal( const QCString &sender, const QCString &senderObj,
    00088                        const QCString &signal,
    00089                        DCOPConnection *conn, const QCString &receiverObj,
    00090                        const QCString &slot, bool Volatile);
    00091
    00101    bool disconnectSignal( const QCString &sender, const QCString &senderObj,
    00102                        const QCString &signal,
    00103                        DCOPConnection *conn, const QCString &receiverObj,
    00104                        const QCString &slot);
    00105
    00112    void removeConnections(DCOPConnection *conn, const QCString &obj=0);
    00113
    00114
    00115    /*
    00116     * The administration.
    00117     *
    00118     * All connections are sorted by "signal" and then inserted in the
    00119     * administration as a list.
    00120     *
    00121     * connections[signal] gives a list of all connections related to
    00122     * a given signal. The connections in this list may specify different
    00123     * senders and receiving clients/objects.
    00124     */
    00125    QAsciiDict<DCOPSignalConnectionList> connections;
    00126 };
    00127
    00128 //
    00129 // connectSignal:
    00130 //
    00131 // Check whether signal and slot match wrt arguments.
    00132 // A slot may ignore arguments from the signal.
    00133 //
    00134 // If volatile
    00135 //    then lookup senderConn...
    00136 //         If not found?
    00137 //            then return false
    00138 // Create DCOPSignalConnection.
    00139 // Add DCOPSignalConnection to "connections".
    00140 // Add DCOPSignalConnection to conn->connectionList()
    00141 // If volatile
    00142 //    then Add DCOPSignalConnection to senderConn->connectionList()
    00143 // Return true
    00144
    00145
    00146 // removeConnections:
    00147 //
    00148 // For each DCOPSignalConnection in conn->connectionList
    00149 //    if DCOPSignalConnection->sender == conn->appId
    00150 //        then remove DCOPSignalConnection from DCOPSIgnalConnection->conn
    00151 //    if DCOPSignalConnection->conn == conn
    00152 //       then.. this is ugly.. remove DCOPSignalConnection from DCOPSignalConnection->sender
    00153 //    WARNING: Take care when sender and conn are the same client!
    00154 //    Remove DCOPSignalConnection from connections[DCOPSignalConnection->signal]
    00155
    00156 #endif

This file is part of the documentation for kdelibs Version 3.1.5.
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