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 #include "uisettings.h"
  31
  32 TabCompleter::TabCompleter(InputLine *inputLine_)
  33   : QObject(inputLine_),
  34     inputLine(inputLine_),
  35     enabled(false),
  36     nickSuffix(": ")
  37 {
  38   inputLine->installEventFilter(this);
  39 }
  40
  41 void TabCompleter::buildCompletionList() {
  42   completionList.clear();
  43   nextCompletion = completionList.begin();
  44   // this is the first time tab is pressed -> build up the completion list and it's iterator
  45   QModelIndex currentIndex = Client::bufferModel()->currentIndex();
  46   if(!currentIndex.data(NetworkModel::BufferIdRole).isValid())
  47     return;
  48
  49   NetworkId networkId = currentIndex.data(NetworkModel::NetworkIdRole).value<NetworkId>();
  50   QString channelName = currentIndex.sibling(currentIndex.row(), 0).data().toString();
  51
  52   const Network *network = Client::network(networkId);
  53   if(!network)
  54     return;
  55
  56   IrcChannel *channel = network->ircChannel(channelName);
  57   if(!channel)
  58     return;
  59
  60   // FIXME commented for debugging
  61   /*
  62   disconnect(this, SLOT(ircUserJoinedOrParted(IrcUser *)));
  63   connect(channel, SIGNAL(ircUserJoined(IrcUser *)),
  64           this, SLOT(ircUserJoinedOrParted(IrcUser *)));
  65   connect(channel, SIGNAL(ircUserParted(IrcUser *)),
  66           this, SLOT(ircUserJoinedOrParted(IrcUser *)));
  67   */
  68
  69   completionList.clear();
  70   QString tabAbbrev = inputLine->text().left(inputLine->cursorPosition()).section(' ',-1,-1);
  71   completionList.clear();
  72   foreach(IrcUser *ircUser, channel->ircUsers()) {
  73     if(ircUser->nick().toLower().startsWith(tabAbbrev.toLower())) {
  74       completionList << ircUser->nick();
  75     }
  76   }
  77   completionList.sort();
  78   nextCompletion = completionList.begin();
  79   lastCompletionLength = tabAbbrev.length();
  80 }
  81
  82 void TabCompleter::ircUserJoinedOrParted(IrcUser *ircUser) {
  83   Q_UNUSED(ircUser)
  84   buildCompletionList();
  85 }
  86
  87 void TabCompleter::complete() {
  88   UiSettings uiSettings;
  89   nickSuffix = uiSettings.value("CompletionSuffix", QString(": ")).toString();
  90
  91   if(!enabled) {
  92     buildCompletionList();
  93     enabled = true;
  94   }
  95
  96   if (nextCompletion != completionList.end()) {
  97     // clear previous completion
  98     for (int i = 0; i < lastCompletionLength; i++) {
  99       inputLine->backspace();
 100     }
 101
 102     // insert completion
 103     inputLine->insert(*nextCompletion);
 104
 105     // remember charcount to delete next time and advance to next completion
 106     lastCompletionLength = nextCompletion->length();
 107     nextCompletion++;
 108
 109     // we're completing the first word of the line
 110     if(inputLine->text().length() == lastCompletionLength) {
 111       inputLine->insert(nickSuffix);
 112       lastCompletionLength += nickSuffix.length();
 113     }
 114
 115   // we're at the end of the list -> start over again
 116   } else {
 117     nextCompletion = completionList.begin();
 118   }
 119
 120 }
 121
 122 void TabCompleter::reset() {
 123   enabled = false;
 124 }
 125
 126 bool TabCompleter::eventFilter(QObject *obj, QEvent *event) {
 127   if(obj != inputLine || event->type() != QEvent::KeyPress)
 128     return QObject::eventFilter(obj, event);
 129
 130   QKeyEvent *keyEvent = static_cast<QKeyEvent *>(event);
 131
 132   if(keyEvent->key() == Qt::Key_Tab) {
 133     complete();
 134     return true;
 135   } else {
 136     reset();
 137     return false;
 138   }
 139 }
 140