src/uisupport/tabcompleter.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2005/06 by the Quassel Project                          *
   3  *   devel@quassel-irc.org                                                 *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) version 3.                                           *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20
  21 #include "tabcompleter.h"
  22
  23 #include "inputline.h"
  24 #include "client.h"
  25 #include "buffermodel.h"
  26 #include "networkmodel.h"
  27 #include "network.h"
  28 #include "ircchannel.h"
  29 #include "ircuser.h"
  30
  31 TabCompleter::TabCompleter(InputLine *inputLine_)
  32   : QObject(inputLine_),
  33     inputLine(inputLine_),
  34     enabled(false),
  35     nickSuffix(": ")
  36 {
  37 }
  38
  39 void TabCompleter::buildCompletionList() {
  40   // this is the first time tab is pressed -> build up the completion list and it's iterator
  41   QModelIndex currentIndex = Client::bufferModel()->currentIndex();
  42   if(!currentIndex.data(NetworkModel::BufferIdRole).isValid())
  43     return;
  44
  45   NetworkId networkId = currentIndex.data(NetworkModel::NetworkIdRole).toUInt();
  46   QString channelName = currentIndex.sibling(currentIndex.row(), 0).data().toString();
  47
  48   Network *network = Client::network(networkId);
  49   if(!network)
  50     return;
  51
  52   IrcChannel *channel = network->ircChannel(channelName);
  53   if(!channel)
  54     return;
  55
  56   disconnect(this, SLOT(ircUserJoinedOrParted(IrcUser *)));
  57   connect(channel, SIGNAL(ircUserJoined(IrcUser *)),
  58           this, SLOT(ircUserJoinedOrParted(IrcUser *)));
  59   connect(channel, SIGNAL(ircUserParted(IrcUser *)),
  60           this, SLOT(ircUserJoinedOrParted(IrcUser *)));
  61
  62   completionList.clear();
  63   QString tabAbbrev = inputLine->text().left(inputLine->cursorPosition()).section(' ',-1,-1);
  64   completionList.clear();
  65   foreach(IrcUser *ircUser, channel->ircUsers()) {
  66     if(ircUser->nick().toLower().startsWith(tabAbbrev.toLower())) {
  67       completionList << ircUser->nick();
  68     }
  69   }
  70   completionList.sort();
  71   nextCompletion = completionList.begin();
  72   lastCompletionLength = tabAbbrev.length();
  73
  74 }
  75
  76 void TabCompleter::ircUserJoinedOrParted(IrcUser *ircUser) {
  77   Q_UNUSED(ircUser)
  78   buildCompletionList();
  79 }
  80
  81 void TabCompleter::complete() {
  82   if(!enabled) {
  83     buildCompletionList();
  84     enabled = true;
  85   }
  86
  87   if (nextCompletion != completionList.end()) {
  88     // clear previous completion
  89     for (int i = 0; i < lastCompletionLength; i++) {
  90       inputLine->backspace();
  91     }
  92
  93     // insert completion
  94     inputLine->insert(*nextCompletion);
  95
  96     // remember charcount to delete next time and advance to next completion
  97     lastCompletionLength = nextCompletion->length();
  98     nextCompletion++;
  99
 100     // we're completing the first word of the line
 101     if(inputLine->text().length() == lastCompletionLength) {
 102       inputLine->insert(nickSuffix);
 103       lastCompletionLength += nickSuffix.length();
 104     }
 105
 106   // we're at the end of the list -> start over again
 107   } else {
 108     nextCompletion = completionList.begin();
 109   }
 110
 111 }
 112
 113 void TabCompleter::reset() {
 114   enabled = false;
 115 }
 116