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  *                                                                         *
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  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 #include <QRegExp>
  33
  34 TabCompleter::TabCompleter(InputLine *inputLine_)
  35   : QObject(inputLine_),
  36     inputLine(inputLine_),
  37     enabled(false),
  38     nickSuffix(": ")
  39 {
  40   inputLine->installEventFilter(this);
  41 }
  42
  43 void TabCompleter::buildCompletionList() {
  44   completionList.clear();
  45   nextCompletion = completionList.begin();
  46   // this is the first time tab is pressed -> build up the completion list and it's iterator
  47   QModelIndex currentIndex = Client::bufferModel()->currentIndex();
  48   if(!currentIndex.data(NetworkModel::BufferIdRole).isValid())
  49     return;
  50
  51   NetworkId networkId = currentIndex.data(NetworkModel::NetworkIdRole).value<NetworkId>();
  52   QString channelName = currentIndex.sibling(currentIndex.row(), 0).data().toString();
  53
  54   const Network *network = Client::network(networkId);
  55   if(!network)
  56     return;
  57
  58   IrcChannel *channel = network->ircChannel(channelName);
  59   if(!channel)
  60     return;
  61
  62   // FIXME commented for debugging
  63   /*
  64   disconnect(this, SLOT(ircUserJoinedOrParted(IrcUser *)));
  65   connect(channel, SIGNAL(ircUserJoined(IrcUser *)),
  66           this, SLOT(ircUserJoinedOrParted(IrcUser *)));
  67   connect(channel, SIGNAL(ircUserParted(IrcUser *)),
  68           this, SLOT(ircUserJoinedOrParted(IrcUser *)));
  69   */
  70
  71   completionList.clear();
  72   QString tabAbbrev = inputLine->text().left(inputLine->cursorPosition()).section(' ',-1,-1);
  73   completionList.clear();
  74   QRegExp regex(QString("^[^a-zA-Z]*").append(tabAbbrev), Qt::CaseInsensitive);
  75   QMap<QString, QString> sortMap;
  76
  77   foreach(IrcUser *ircUser, channel->ircUsers()) {
  78     if(regex.indexIn(ircUser->nick()) > -1) {
  79       sortMap[ircUser->nick().toLower()] = ircUser->nick();
  80     }
  81   }
  82   foreach (QString str, sortMap)
  83     completionList << str;
  84
  85   nextCompletion = completionList.begin();
  86   lastCompletionLength = tabAbbrev.length();
  87 }
  88
  89 void TabCompleter::ircUserJoinedOrParted(IrcUser *ircUser) {
  90   Q_UNUSED(ircUser)
  91   buildCompletionList();
  92 }
  93
  94 void TabCompleter::complete() {
  95   UiSettings uiSettings;
  96   nickSuffix = uiSettings.value("CompletionSuffix", QString(": ")).toString();
  97
  98   if(!enabled) {
  99     buildCompletionList();
 100     enabled = true;
 101   }
 102
 103   if (nextCompletion != completionList.end()) {
 104     // clear previous completion
 105     for (int i = 0; i < lastCompletionLength; i++) {
 106       inputLine->backspace();
 107     }
 108
 109     // insert completion
 110     inputLine->insert(*nextCompletion);
 111
 112     // remember charcount to delete next time and advance to next completion
 113     lastCompletionLength = nextCompletion->length();
 114     nextCompletion++;
 115
 116     // we're completing the first word of the line
 117     if(inputLine->text().length() == lastCompletionLength) {
 118       inputLine->insert(nickSuffix);
 119       lastCompletionLength += nickSuffix.length();
 120     }
 121
 122   // we're at the end of the list -> start over again
 123   } else {
 124     nextCompletion = completionList.begin();
 125   }
 126
 127 }
 128
 129 void TabCompleter::reset() {
 130   enabled = false;
 131 }
 132
 133 bool TabCompleter::eventFilter(QObject *obj, QEvent *event) {
 134   if(obj != inputLine || event->type() != QEvent::KeyPress)
 135     return QObject::eventFilter(obj, event);
 136
 137   QKeyEvent *keyEvent = static_cast<QKeyEvent *>(event);
 138
 139   if(keyEvent->key() == Qt::Key_Tab) {
 140     complete();
 141     return true;
 142   } else {
 143     reset();
 144     return false;
 145   }
 146 }
 147