Allow to sort peer list either by country or by IP

src/properties/peerlistdelegate.h

@@ -39,7 +39,7 @@ class PeerListDelegate: public QItemDelegate {
   Q_OBJECT
 
 public:
-  enum PeerListColumns {IP, CONNECTION, FLAGS, CLIENT, PROGRESS, DOWN_SPEED, UP_SPEED,
+  enum PeerListColumns {COUNTRY, IP, CONNECTION, FLAGS, CLIENT, PROGRESS, DOWN_SPEED, UP_SPEED,
                         TOT_DOWN, TOT_UP, IP_HIDDEN, COL_COUNT};
 
 public:

src/properties/peerlistsortmodel.h

@@ -0,0 +1,70 @@
+/*
+ * Bittorrent Client using Qt4 and libtorrent.
+ * Copyright (C) 2013  Nick Tiskov
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * In addition, as a special exception, the copyright holders give permission to
+ * link this program with the OpenSSL project's "OpenSSL" library (or with
+ * modified versions of it that use the same license as the "OpenSSL" library),
+ * and distribute the linked executables. You must obey the GNU General Public
+ * License in all respects for all of the code used other than "OpenSSL".  If you
+ * modify file(s), you may extend this exception to your version of the file(s),
+ * but you are not obligated to do so. If you do not wish to do so, delete this
+ * exception statement from your version.
+ *
+ * Contact : daymansmail@gmail.com
+ */
+
+#ifndef PEERLISTSORTMODEL_H
+#define PEERLISTSORTMODEL_H
+
+#include <QStringList>
+#include <QSortFilterProxyModel>
+#include "peerlistdelegate.h"
+
+class PeerListSortModel : public QSortFilterProxyModel {
+  Q_OBJECT
+
+public:
+  PeerListSortModel(QObject *parent = 0) : QSortFilterProxyModel(parent) {}
+
+protected:
+  bool lessThan(const QModelIndex &left, const QModelIndex &right) const {
+    if (sortColumn() == PeerListDelegate::IP) {
+      const QStringList ipLeft = sourceModel()->data(left).toString().split('.');
+      const QStringList ipRight = sourceModel()->data(right).toString().split('.');
+      if ((ipRight.size() & ipLeft.size()) != 4) // One row in model
+        return false;
+      Q_ASSERT(ipLeft.size() == 4);
+      Q_ASSERT(ipRight.size() == 4);
+
+      int i = 0;
+      while (i < 4) {
+        int l = ipLeft.at(i).toInt();
+        int r = ipRight.at(i).toInt();
+        if (l < r)
+          return true;
+        else if (l > r)
+          return false;
+        ++i;
+      }
+      return false;
+    }
+    return QSortFilterProxyModel::lessThan(left, right);
+  }
+};
+
+#endif // PEERLISTSORTMODEL_H

src/properties/peerlistwidget.cpp

@@ -61,6 +61,7 @@ PeerListWidget::PeerListWidget(PropertiesWidget *parent):
   setSelectionMode(QAbstractItemView::ExtendedSelection);
   // List Model
   m_listModel = new QStandardItemModel(0, PeerListDelegate::COL_COUNT);
+  m_listModel->setHeaderData(PeerListDelegate::COUNTRY, Qt::Horizontal, QVariant()); // Country flag column
   m_listModel->setHeaderData(PeerListDelegate::IP, Qt::Horizontal, tr("IP"));
   m_listModel->setHeaderData(PeerListDelegate::FLAGS, Qt::Horizontal, tr("Flags"));
   m_listModel->setHeaderData(PeerListDelegate::CONNECTION, Qt::Horizontal, tr("Connection"));
@@ -71,7 +72,7 @@ PeerListWidget::PeerListWidget(PropertiesWidget *parent):
   m_listModel->setHeaderData(PeerListDelegate::TOT_DOWN, Qt::Horizontal, tr("Downloaded", "i.e: total data downloaded"));
   m_listModel->setHeaderData(PeerListDelegate::TOT_UP, Qt::Horizontal, tr("Uploaded", "i.e: total data uploaded"));
   // Proxy model to support sorting without actually altering the underlying model
-  m_proxyModel = new QSortFilterProxyModel();
+  m_proxyModel = new PeerListSortModel();
   m_proxyModel->setDynamicSortFilter(true);
   m_proxyModel->setSourceModel(m_listModel);
   setModel(m_proxyModel);
@@ -82,6 +83,8 @@ PeerListWidget::PeerListWidget(PropertiesWidget *parent):
     showColumn(i);
   hideColumn(PeerListDelegate::IP_HIDDEN);
   hideColumn(PeerListDelegate::COL_COUNT);
+  if (!Preferences().resolvePeerCountries())
+    hideColumn(PeerListDelegate::COUNTRY);
   //To also migitate the above issue, we have to resize each column when
   //its size is 0, because explicitely 'showing' the column isn't enough
   //in the above scenario.
@@ -370,9 +373,9 @@ QStandardItem* PeerListWidget::addPeer(const QString& ip, const peer_info& peer)
   if (m_displayFlags) {
     const QIcon ico = GeoIPManager::CountryISOCodeToIcon(peer.country);
     if (!ico.isNull()) {
-      m_listModel->setData(m_listModel->index(row, PeerListDelegate::IP), ico, Qt::DecorationRole);
+      m_listModel->setData(m_listModel->index(row, PeerListDelegate::COUNTRY), ico, Qt::DecorationRole);
       const QString country_name = GeoIPManager::CountryISOCodeToName(peer.country);
-      m_listModel->setData(m_listModel->index(row, PeerListDelegate::IP), country_name, Qt::ToolTipRole);
+      m_listModel->setData(m_listModel->index(row, PeerListDelegate::COUNTRY), country_name, Qt::ToolTipRole);
     } else {
       m_missingFlags.insert(ip);
     }
@@ -394,9 +397,9 @@ void PeerListWidget::updatePeer(const QString& ip, const peer_info& peer) {
   if (m_displayFlags) {
     const QIcon ico = GeoIPManager::CountryISOCodeToIcon(peer.country);
     if (!ico.isNull()) {
-      m_listModel->setData(m_listModel->index(row, PeerListDelegate::IP), ico, Qt::DecorationRole);
+      m_listModel->setData(m_listModel->index(row, PeerListDelegate::COUNTRY), ico, Qt::DecorationRole);
       const QString country_name = GeoIPManager::CountryISOCodeToName(peer.country);
-      m_listModel->setData(m_listModel->index(row, PeerListDelegate::IP), country_name, Qt::ToolTipRole);
+      m_listModel->setData(m_listModel->index(row, PeerListDelegate::COUNTRY), country_name, Qt::ToolTipRole);
       m_missingFlags.remove(ip);
     }
   }
@@ -420,7 +423,7 @@ void PeerListWidget::handleResolved(const QString &ip, const QString &hostname)
 
 void PeerListWidget::handleSortColumnChanged(int col)
 {
-  if (col == 0) {
+  if (col == PeerListDelegate::COUNTRY) {
     qDebug("Sorting by decoration");
     m_proxyModel->setSortRole(Qt::ToolTipRole);
   } else {

src/properties/peerlistwidget.h

@@ -36,6 +36,7 @@
 #include <QPointer>
 #include <QSet>
 #include <libtorrent/peer_info.hpp>
+#include "peerlistsortmodel.h"
 #include "qtorrenthandle.h"
 #include "misc.h"
 
@@ -88,7 +89,7 @@ private:
 private:
   QStandardItemModel *m_listModel;
   PeerListDelegate *m_listDelegate;
-  QSortFilterProxyModel *m_proxyModel;
+  PeerListSortModel *m_proxyModel;
   QHash<QString, QStandardItem*> m_peerItems;
   QHash<QString, boost::asio::ip::tcp::endpoint> m_peerEndpoints;
   QSet<QString> m_missingFlags;

src/properties/properties.pri

@@ -10,6 +10,7 @@ HEADERS += $$PWD/propertieswidget.h \
            $$PWD/trackerlist.h \
            $$PWD/downloadedpiecesbar.h \
            $$PWD/peerlistdelegate.h \
+           $$PWD/peerlistsortmodel.h \
            $$PWD/peeraddition.h \
            $$PWD/trackersadditiondlg.h \
            $$PWD/pieceavailabilitybar.h \