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275 lines
7.9 KiB
275 lines
7.9 KiB
/*
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Copyright (c) 2000 Waldo Bastian <bastian@kde.org>
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <dcopserver.h>
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#include <dcopsignals.h>
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template class TQPtrList<DCOPSignalConnection>;
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DCOPSignals::DCOPSignals()
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{
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connections.setAutoDelete(true);
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}
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/**
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* Client "conn" emits the signal "fun" with "data" as arguments.
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*
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* If "excludeSelf" is true, signal is never sent to "conn" itself.
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*/
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void
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DCOPSignals::emitSignal( DCOPConnection *conn, const TQCString &_fun, const TQByteArray &data, bool excludeSelf)
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{
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TQCString senderObj;
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TQCString fun = _fun;
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int i = fun.tqfind('#');
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if (i > -1)
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{
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senderObj = fun.left(i);
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fun = fun.mid(i+1);
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}
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DCOPSignalConnectionList *list = connections.tqfind(fun);
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if (!list) return;
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for(DCOPSignalConnection *current = list->first(); current; current = list->next())
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{
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bool doSend = false;
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if (current->senderConn)
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{
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if (current->senderConn == conn)
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doSend = true;
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}
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else if (!current->sender.isEmpty())
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{
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if ((conn && current->sender == conn->appId) || (current->sender == "DCOPServer"))
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doSend = true;
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}
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else
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{
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doSend = true;
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}
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if (!current->senderObj.isEmpty() &&
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(current->senderObj != senderObj))
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{
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doSend = false;
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}
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if (excludeSelf && (conn == current->recvConn))
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doSend = false;
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if (doSend)
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{
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the_server->sendMessage(current->recvConn, conn ? conn->appId : TQCString("DCOPServer"),
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current->recvConn->appId, current->recvObj,
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current->slot, data);
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}
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}
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}
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/**
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* Connects "signal" of the client named "sender" with the "slot" of
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* "receiverObj" in the "conn" client.
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*
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* If "Volatile" is true the connection will be removed when either
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* "sender" or "conn" unregisters.
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*
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* If "Volatile" is false the connection will only be removed when
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* "conn" unregisters.
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*/
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bool
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DCOPSignals::connectSignal( const TQCString &sender, const TQCString &senderObj,
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const TQCString &signal,
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DCOPConnection *conn, const TQCString &receiverObj,
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const TQCString &slot, bool Volatile)
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{
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// TODO: Check if signal and slot match
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TQCString signalArgs, slotArgs;
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int i,j;
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i = signal.tqfind('(');
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if (i < 0) return false;
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signalArgs = signal.mid(i+1);
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j = signalArgs.tqfind(')');
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if (j < 0) return false;
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signalArgs.truncate(j);
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i = slot.tqfind('(');
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if (i < 0) return false;
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slotArgs = slot.mid(i+1);
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j = slotArgs.tqfind(')');
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if (j < 0) return false;
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slotArgs.truncate(j);
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if(signalArgs != slotArgs)
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{
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// Maybe the signal has more arguments than the slot...
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if (signalArgs.length() <= slotArgs.length())
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return false;
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if ((slotArgs.length() > 0) && (signalArgs[slotArgs.length()] != ','))
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return false;
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if (signalArgs.left(slotArgs.length()) != slotArgs)
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return false;
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}
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DCOPConnection *senderConn = 0;
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if (Volatile)
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{
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senderConn = the_server->tqfindApp(sender);
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if (!senderConn)
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return false; // Sender does not exist.
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}
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DCOPSignalConnection *current = new DCOPSignalConnection;
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current->sender = sender;
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current->senderObj = senderObj;
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current->senderConn = senderConn;
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current->signal = signal;
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current->recvConn = conn;
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current->recvObj = receiverObj;
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current->slot = slot;
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DCOPSignalConnectionList *list = connections.tqfind(signal);
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if (!list)
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{
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list = new DCOPSignalConnectionList;
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connections.insert(signal, list);
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}
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list->append( current );
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conn->signalConnectionList()->append(current);
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if (senderConn && senderConn != conn)
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senderConn->signalConnectionList()->append(current);
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return true;
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}
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/**
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* Disconnects "signal" of the client named "sender" from the "slot" of
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* "receiverObj" in the "conn" client.
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*
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* Special case:
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* If sender & signal are empty all connections that involve
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* conn & receiverObj (either as receiver or as sender)
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* are disconnected.
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*/
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bool
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DCOPSignals::disconnectSignal( const TQCString &sender, const TQCString &senderObj,
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const TQCString &signal,
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DCOPConnection *conn, const TQCString &receiverObj,
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const TQCString &slot)
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{
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if (sender.isEmpty() && signal.isEmpty())
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{
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removeConnections(conn, receiverObj);
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return true;
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}
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DCOPSignalConnectionList *list = connections.tqfind(signal);
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if (!list)
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return false; // Not found...
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DCOPSignalConnection *next = 0;
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bool result = false;
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for(DCOPSignalConnection *current = list->first(); current; current = next)
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{
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next = list->next();
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if (current->recvConn != conn)
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continue;
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if (current->senderConn)
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{
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if (current->senderConn->appId != sender)
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continue;
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}
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else if (current->sender != sender)
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continue;
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if (!senderObj.isEmpty() &&
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(current->senderObj != senderObj))
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continue;
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if (!receiverObj.isEmpty() &&
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(current->recvObj != receiverObj))
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continue;
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if (!slot.isEmpty() &&
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(current->slot != slot))
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continue;
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result = true;
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list->removeRef(current);
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conn->signalConnectionList()->removeRef(current);
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if (current->senderConn)
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current->senderConn->signalConnectionList()->removeRef(current);
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delete current;
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}
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return result;
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}
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/**
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* Removes all connections related to "obj" in the "conn" client
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* This means:
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* All connections for which "conn"/"obj" is the receiver.
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* All volatile connections for which "conn"/"obj" is the sender.
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*/
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void
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DCOPSignals::removeConnections(DCOPConnection *conn, const TQCString &obj)
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{
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DCOPSignalConnectionList *list = conn->_signalConnectionList;
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if (!list)
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return; // Nothing to do...
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DCOPSignalConnection *next = 0;
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for(DCOPSignalConnection *current = list->first(); current; current = next)
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{
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next = list->next();
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if (!obj.isEmpty())
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{
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if ((current->senderConn == conn) && (current->senderObj != obj))
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continue;
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if ((current->recvConn == conn) && (current->recvObj != obj))
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continue;
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}
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if (current->senderConn && (current->senderConn != conn))
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current->senderConn->signalConnectionList()->removeRef(current);
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if (current->recvConn != conn)
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current->recvConn->signalConnectionList()->removeRef(current);
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DCOPSignalConnectionList *signalList = connections.tqfind(current->signal);
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if (signalList)
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{
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signalList->removeRef(current);
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if (signalList->isEmpty())
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connections.remove(current->signal);
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}
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else
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{
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qDebug("Error: Signal Connection was not in signalList!\n");
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}
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list->removeRef(current);
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delete current;
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}
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}
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