workspace/klipper/history.cpp

   1 // -*- Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 8; -*-
   2 /* This file is part of the KDE project
   3    Copyright (C) 2004  Esben Mose Hansen <kde@mosehansen.dk>
   4    Copyright (C) by Andrew Stanley-Jones
   5    Copyright (C) 2000 by Carsten Pfeiffer <pfeiffer@kde.org>
   6
   7    This program is free software; you can redistribute it and/or
   8    modify it under the terms of the GNU General Public
   9    License as published by the Free Software Foundation; either
  10    version 2 of the License, or (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15     General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; see the file COPYING.  If not, write to
  19    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20    Boston, MA 02110-1301, USA.
  21 */
  22 #include <kdebug.h>
  23
  24 #include "history.h"
  25 #include "historystringitem.h"
  26 #include "klipperpopup.h"
  27
  28 History::History( QObject* parent )
  29     : QObject( parent ),
  30       m_popup( new KlipperPopup( this ) ),
  31       m_topIsUserSelected( false )
  32 {
  33     connect( this, SIGNAL( changed() ), m_popup, SLOT( slotHistoryChanged() ) );
  34
  35 }
  36
  37
  38 History::~History() {
  39     qDeleteAll(itemList);
  40 }
  41
  42 History::iterator History::youngest() {
  43     return iterator( itemList );
  44 }
  45
  46 void History::insert( const HistoryItem* item ) {
  47     if ( !item )
  48         return;
  49
  50     m_topIsUserSelected = false;
  51
  52     // Optimization: Compare with top item.
  53     if ( !itemList.isEmpty() && *itemList.first() == *item ) {
  54         delete item;
  55         return;
  56     }
  57
  58     remove( item );
  59     forceInsert( item );
  60
  61     emit topChanged();
  62
  63 }
  64
  65 void History::forceInsert( const HistoryItem* item ) {
  66     if ( !item )
  67         return;
  68     itemList.prepend( item );
  69     emit changed();
  70     trim();
  71 }
  72
  73 void History::trim() {
  74     int i = itemList.count() - max_size();
  75     if ( i <= 0 )
  76         return;
  77
  78     while ( i-- ) {
  79         itemList.removeLast();
  80     }
  81     emit changed();
  82 }
  83
  84 void History::remove( const HistoryItem* newItem ) {
  85     if ( !newItem )
  86         return;
  87
  88     if (itemList.contains(newItem)) {
  89         itemList.removeAll(newItem);
  90         emit changed();
  91     }
  92 }
  93
  94
  95 void History::slotClear() {
  96     itemList.clear();
  97     emit changed();
  98 }
  99
 100 void History::slotMoveToTop(QAction *action) {
 101     bool ok = false;
 102     int pos = action->data().toInt(&ok);
 103     if (!ok) // not an action from popupproxy
 104         return;
 105
 106     if ( pos < 0 || pos >= itemList.count() ) {
 107         kDebug() << "Argument pos out of range: " << pos;
 108         return;
 109     }
 110
 111     m_topIsUserSelected = true;
 112
 113     itemList.move(pos, 0);
 114     emit changed();
 115     emit topChanged();
 116 }
 117
 118 void History::max_size( unsigned max_size ) {
 119     m_max_size = max_size;
 120     trim();
 121
 122 }
 123
 124 KlipperPopup* History::popup() {
 125     return m_popup;
 126 }
 127
 128 #include "history.moc"