made the check for lineseperators OS independent
[quassel.git] / 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,       *
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12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
13  *   GNU General Public License for more details.                          *
14  *                                                                         *
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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   completionList.clear();
41   nextCompletion = completionList.begin();
42   // this is the first time tab is pressed -> build up the completion list and it's iterator
43   QModelIndex currentIndex = Client::bufferModel()->currentIndex();
44   if(!currentIndex.data(NetworkModel::BufferIdRole).isValid())
45     return;
46   
47   NetworkId networkId = currentIndex.data(NetworkModel::NetworkIdRole).value<NetworkId>();
48   QString channelName = currentIndex.sibling(currentIndex.row(), 0).data().toString();
49
50   const Network *network = Client::network(networkId);
51   if(!network)
52     return;
53
54   IrcChannel *channel = network->ircChannel(channelName);
55   if(!channel)
56     return;
57
58   // FIXME commented for debugging
59   /*
60   disconnect(this, SLOT(ircUserJoinedOrParted(IrcUser *)));
61   connect(channel, SIGNAL(ircUserJoined(IrcUser *)),
62           this, SLOT(ircUserJoinedOrParted(IrcUser *)));
63   connect(channel, SIGNAL(ircUserParted(IrcUser *)),
64           this, SLOT(ircUserJoinedOrParted(IrcUser *)));
65   */
66
67   completionList.clear();
68   QString tabAbbrev = inputLine->text().left(inputLine->cursorPosition()).section(' ',-1,-1);
69   completionList.clear();
70   foreach(IrcUser *ircUser, channel->ircUsers()) {
71     if(ircUser->nick().toLower().startsWith(tabAbbrev.toLower())) {
72       completionList << ircUser->nick();
73     }
74   }
75   completionList.sort();
76   nextCompletion = completionList.begin();
77   lastCompletionLength = tabAbbrev.length();
78 }
79
80 void TabCompleter::ircUserJoinedOrParted(IrcUser *ircUser) {
81   Q_UNUSED(ircUser)
82   buildCompletionList();
83 }
84
85 void TabCompleter::complete() {
86   if(!enabled) {
87     buildCompletionList();
88     enabled = true;
89   }
90   
91   if (nextCompletion != completionList.end()) {
92     // clear previous completion
93     for (int i = 0; i < lastCompletionLength; i++) {
94       inputLine->backspace();
95     }
96     
97     // insert completion
98     inputLine->insert(*nextCompletion);
99     
100     // remember charcount to delete next time and advance to next completion
101     lastCompletionLength = nextCompletion->length();
102     nextCompletion++;
103     
104     // we're completing the first word of the line
105     if(inputLine->text().length() == lastCompletionLength) {
106       inputLine->insert(nickSuffix);
107       lastCompletionLength += nickSuffix.length();
108     }
109
110   // we're at the end of the list -> start over again
111   } else {
112     nextCompletion = completionList.begin();
113   }
114   
115 }
116
117 void TabCompleter::reset() {
118   enabled = false;
119 }
120