From 19db0d471f7bc389f2038c71a07a105a18fbcd16 Mon Sep 17 00:00:00 2001
From: Christophe Dumez <chris@qbittorrent.org>
Date: Wed, 24 Nov 2010 20:31:14 +0000
Subject: [PATCH] Signal / slot fixes

---
 src/mainwindow.cpp                  | 18 +++++++++---------
 src/mainwindow.h                    |  8 ++++----
 src/properties/propertieswidget.cpp | 12 ++++++------
 src/properties/propertieswidget.h   |  6 +++---
 src/qtlibtorrent/qbtsession.cpp     |  7 ++++---
 src/qtlibtorrent/qbtsession.h       | 24 ++++++++++++------------
 src/qtlibtorrent/qtorrenthandle.cpp | 20 ++++++++++----------
 src/qtlibtorrent/qtorrenthandle.h   | 20 ++++++++++----------
 src/qtlibtorrent/torrentmodel.cpp   | 12 ++++++------
 src/qtlibtorrent/torrentmodel.h     |  2 +-
 src/transferlistwidget.h            |  2 +-
 src/webui/eventmanager.cpp          |  4 ++--
 src/webui/eventmanager.h            |  4 ++--
 src/webui/httpserver.cpp            |  2 +-
 14 files changed, 71 insertions(+), 70 deletions(-)

diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index 81403ed53..54b2466ac 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -134,13 +134,13 @@ MainWindow::MainWindow(QWidget *parent, QStringList torrentCmdLine) : QMainWindo
   toolBar->layout()->setSpacing(7);
   // Creating Bittorrent session
   BTSession = QBtSession::instance();
-  connect(BTSession, SIGNAL(fullDiskError(QTorrentHandle&, QString)), this, SLOT(fullDiskError(QTorrentHandle&, QString)));
-  connect(BTSession, SIGNAL(finishedTorrent(QTorrentHandle&)), this, SLOT(finishedTorrent(QTorrentHandle&)));
-  connect(BTSession, SIGNAL(trackerAuthenticationRequired(QTorrentHandle&)), this, SLOT(trackerAuthenticationRequired(QTorrentHandle&)));
+  connect(BTSession, SIGNAL(fullDiskError(QTorrentHandle, QString)), this, SLOT(fullDiskError(QTorrentHandle, QString)));
+  connect(BTSession, SIGNAL(finishedTorrent(QTorrentHandle)), this, SLOT(finishedTorrent(QTorrentHandle)));
+  connect(BTSession, SIGNAL(trackerAuthenticationRequired(QTorrentHandle)), this, SLOT(trackerAuthenticationRequired(QTorrentHandle)));
   connect(BTSession, SIGNAL(newDownloadedTorrent(QString, QString)), this, SLOT(processDownloadedFiles(QString, QString)));
   connect(BTSession, SIGNAL(downloadFromUrlFailure(QString, QString)), this, SLOT(handleDownloadFromUrlFailure(QString, QString)));
   connect(BTSession, SIGNAL(alternativeSpeedsModeChanged(bool)), this, SLOT(updateAltSpeedsBtn(bool)));
-  connect(BTSession, SIGNAL(recursiveTorrentDownloadPossible(QTorrentHandle&)), this, SLOT(askRecursiveTorrentDownloadConfirmation(QTorrentHandle&)));
+  connect(BTSession, SIGNAL(recursiveTorrentDownloadPossible(QTorrentHandle)), this, SLOT(askRecursiveTorrentDownloadConfirmation(QTorrentHandle)));
 #ifdef Q_WS_MAC
   connect(static_cast<QMacApplication*>(qApp), SIGNAL(newFileOpenMacEvent(QString)), this, SLOT(processParams(QString)));
 #endif
@@ -448,13 +448,13 @@ void MainWindow::writeSettings() {
 }
 
 // called when a torrent has finished
-void MainWindow::finishedTorrent(QTorrentHandle& h) const {
+void MainWindow::finishedTorrent(const QTorrentHandle& h) const {
   if(!TorrentPersistentData::isSeed(h.hash()))
     showNotificationBaloon(tr("Download completion"), tr("%1 has finished downloading.", "e.g: xxx.avi has finished downloading.").arg(h.name()));
 }
 
 // Notification when disk is full
-void MainWindow::fullDiskError(QTorrentHandle& h, QString msg) const {
+void MainWindow::fullDiskError(const QTorrentHandle& h, QString msg) const {
   if(!h.is_valid()) return;
   showNotificationBaloon(tr("I/O Error", "i.e: Input/Output Error"), tr("An I/O error occured for torrent %1.\n Reason: %2", "e.g: An error occured for torrent xxx.avi.\n Reason: disk is full.").arg(h.name()).arg(msg));
 }
@@ -529,7 +529,7 @@ void MainWindow::balloonClicked() {
   }
 }
 
-void MainWindow::askRecursiveTorrentDownloadConfirmation(QTorrentHandle &h) {
+void MainWindow::askRecursiveTorrentDownloadConfirmation(const QTorrentHandle &h) {
   Preferences pref;
   if(pref.recursiveDownloadDisabled()) return;
   QMessageBox confirmBox(QMessageBox::Question, tr("Recursive download confirmation"), tr("The torrent %1 contains torrent files, do you want to proceed with their download?").arg(h.name()));
@@ -1005,7 +1005,7 @@ void MainWindow::addUnauthenticatedTracker(const QPair<QTorrentHandle,QString> &
 }
 
 // Called when a tracker requires authentication
-void MainWindow::trackerAuthenticationRequired(QTorrentHandle& h) {
+void MainWindow::trackerAuthenticationRequired(const QTorrentHandle& h) {
   if(unauthenticated_trackers.indexOf(QPair<QTorrentHandle,QString>(h, h.current_tracker())) < 0) {
     // Tracker login
     new trackerLogin(this, h);
@@ -1223,7 +1223,7 @@ void MainWindow::on_action_Import_Torrent_triggered()
 void MainWindow::on_actionDownload_from_URL_triggered() {
   if(!downloadFromURLDialog) {
     downloadFromURLDialog = new downloadFromURL(this);
-    connect(downloadFromURLDialog, SIGNAL(urlsReadyToBeDownloaded(const QStringList&)), this, SLOT(downloadFromURLList(const QStringList&)));
+    connect(downloadFromURLDialog, SIGNAL(urlsReadyToBeDownloaded(QStringList)), this, SLOT(downloadFromURLList(QStringList)));
   }
 }
 
diff --git a/src/mainwindow.h b/src/mainwindow.h
index ced89b0c4..f349faf81 100644
--- a/src/mainwindow.h
+++ b/src/mainwindow.h
@@ -74,7 +74,7 @@ public:
   PropertiesWidget *getProperties() const { return properties; }
 
 public slots:
-  void trackerAuthenticationRequired(QTorrentHandle& h);
+  void trackerAuthenticationRequired(const QTorrentHandle& h);
   void setTabText(int index, QString text) const;
   void showNotificationBaloon(QString title, QString msg) const;
   void downloadFromURLList(const QStringList& urls);
@@ -97,7 +97,7 @@ protected slots:
   void readSettings();
   void on_actionExit_triggered();
   void createTrayIcon();
-  void fullDiskError(QTorrentHandle& h, QString msg) const;
+  void fullDiskError(const QTorrentHandle& h, QString msg) const;
   void handleDownloadFromUrlFailure(QString, QString) const;
   void createSystrayDelayed();
   void tab_changed(int);
@@ -123,8 +123,8 @@ protected slots:
   void addTorrent(QString path);
   void addUnauthenticatedTracker(const QPair<QTorrentHandle,QString> &tracker);
   void processDownloadedFiles(QString path, QString url);
-  void finishedTorrent(QTorrentHandle& h) const;
-  void askRecursiveTorrentDownloadConfirmation(QTorrentHandle &h);
+  void finishedTorrent(const QTorrentHandle& h) const;
+  void askRecursiveTorrentDownloadConfirmation(const QTorrentHandle &h);
   // Options slots
   void on_actionOptions_triggered();
   void optionsSaved();
diff --git a/src/properties/propertieswidget.cpp b/src/properties/propertieswidget.cpp
index 4c3bb50b6..9fc8844bb 100644
--- a/src/properties/propertieswidget.cpp
+++ b/src/properties/propertieswidget.cpp
@@ -79,11 +79,11 @@ PropertiesWidget::PropertiesWidget(QWidget *parent, MainWindow* main_window, Tra
   connect(PropListModel, SIGNAL(filteredFilesChanged()), this, SLOT(filteredFilesChanged()));
   connect(addWS_button, SIGNAL(clicked()), this, SLOT(askWebSeed()));
   connect(deleteWS_button, SIGNAL(clicked()), this, SLOT(deleteSelectedUrlSeeds()));
-  connect(transferList, SIGNAL(currentTorrentChanged(QTorrentHandle&)), this, SLOT(loadTorrentInfos(QTorrentHandle &)));
+  connect(transferList, SIGNAL(currentTorrentChanged(QTorrentHandle)), this, SLOT(loadTorrentInfos(QTorrentHandle)));
   connect(PropDelegate, SIGNAL(filteredFilesChanged()), this, SLOT(filteredFilesChanged()));
   connect(stackedProperties, SIGNAL(currentChanged(int)), this, SLOT(loadDynamicData()));
-  connect(QBtSession::instance(), SIGNAL(savePathChanged(QTorrentHandle&)), this, SLOT(updateSavePath(QTorrentHandle&)));
-  connect(QBtSession::instance(), SIGNAL(metadataReceived(QTorrentHandle&)), this, SLOT(updateTorrentInfos(QTorrentHandle&)));
+  connect(QBtSession::instance(), SIGNAL(savePathChanged(QTorrentHandle)), this, SLOT(updateSavePath(QTorrentHandle)));
+  connect(QBtSession::instance(), SIGNAL(metadataReceived(QTorrentHandle)), this, SLOT(updateTorrentInfos(QTorrentHandle)));
 
   // Downloaded pieces progress bar
   downloaded_pieces = new DownloadedPiecesBar(this);
@@ -199,7 +199,7 @@ QTorrentHandle PropertiesWidget::getCurrentTorrent() const {
   return h;
 }
 
-void PropertiesWidget::updateSavePath(QTorrentHandle& _h) {
+void PropertiesWidget::updateSavePath(const QTorrentHandle& _h) {
   if(h.is_valid() && h == _h) {
     QString p;
     if(h.has_metadata() && h.num_files() == 1) {
@@ -216,13 +216,13 @@ void PropertiesWidget::updateSavePath(QTorrentHandle& _h) {
   }
 }
 
-void PropertiesWidget::updateTorrentInfos(QTorrentHandle& _h) {
+void PropertiesWidget::updateTorrentInfos(const QTorrentHandle& _h) {
   if(h.is_valid() && h == _h) {
     loadTorrentInfos(h);
   }
 }
 
-void PropertiesWidget::loadTorrentInfos(QTorrentHandle &_h) {
+void PropertiesWidget::loadTorrentInfos(const QTorrentHandle &_h) {
   clear();
   h = _h;
   if(!h.is_valid()) {
diff --git a/src/properties/propertieswidget.h b/src/properties/propertieswidget.h
index e75fdecb1..77bea30d3 100644
--- a/src/properties/propertieswidget.h
+++ b/src/properties/propertieswidget.h
@@ -69,8 +69,8 @@ protected:
   bool applyPriorities();
 
 protected slots:
-  void loadTorrentInfos(QTorrentHandle &h);
-  void updateTorrentInfos(QTorrentHandle &h);
+  void loadTorrentInfos(const QTorrentHandle &h);
+  void updateTorrentInfos(const QTorrentHandle &h);
   void loadUrlSeeds();
   void askWebSeed();
   void deleteSelectedUrlSeeds();
@@ -91,7 +91,7 @@ public slots:
   void saveSettings();
   void reloadPreferences();
   void openDoubleClickedFile(QModelIndex);
-  void updateSavePath(QTorrentHandle& h);
+  void updateSavePath(const QTorrentHandle& h);
 
 private:
   TransferListWidget *transferList;
diff --git a/src/qtlibtorrent/qbtsession.cpp b/src/qtlibtorrent/qbtsession.cpp
index 03cf79b22..565be74a7 100644
--- a/src/qtlibtorrent/qbtsession.cpp
+++ b/src/qtlibtorrent/qbtsession.cpp
@@ -409,6 +409,7 @@ void QBtSession::configureSession() {
   sessionSettings.outgoing_ports = std::make_pair(pref.outgoingPortsMin(), pref.outgoingPortsMax());
   setSessionSettings(sessionSettings);
   // Ignore limits on LAN
+  qDebug() << "Ignore limits on LAN" << pref.ignoreLimitsOnLAN();
   sessionSettings.ignore_limits_on_local_network = pref.ignoreLimitsOnLAN();
   // Include overhead in transfer limits
   sessionSettings.rate_limit_ip_overhead = pref.includeOverheadInLimits();
@@ -1645,7 +1646,7 @@ void QBtSession::setDefaultTempPath(QString temppath) {
 }
 
 #if LIBTORRENT_VERSION_MINOR > 14
-void QBtSession::appendqBextensionToTorrent(QTorrentHandle &h, bool append) {
+void QBtSession::appendqBextensionToTorrent(const QTorrentHandle &h, bool append) {
   if(!h.is_valid() || !h.has_metadata()) return;
   std::vector<size_type> fp;
   h.file_progress(fp);
@@ -1673,7 +1674,7 @@ void QBtSession::appendqBextensionToTorrent(QTorrentHandle &h, bool append) {
 }
 #endif
 
-void QBtSession::changeLabelInTorrentSavePath(QTorrentHandle &h, QString old_label, QString new_label) {
+void QBtSession::changeLabelInTorrentSavePath(const QTorrentHandle &h, QString old_label, QString new_label) {
   if(!h.is_valid()) return;
   if(!appendLabelToSavePath) return;
   QString old_save_path = TorrentPersistentData::getSavePath(h.hash());
@@ -1687,7 +1688,7 @@ void QBtSession::changeLabelInTorrentSavePath(QTorrentHandle &h, QString old_lab
   }
 }
 
-void QBtSession::appendLabelToTorrentSavePath(QTorrentHandle& h) {
+void QBtSession::appendLabelToTorrentSavePath(const QTorrentHandle& h) {
   if(!h.is_valid()) return;
   const QString label = TorrentPersistentData::getLabel(h.hash());
   if(label.isEmpty()) return;
diff --git a/src/qtlibtorrent/qbtsession.h b/src/qtlibtorrent/qbtsession.h
index 21614b450..ffbcc8db0 100644
--- a/src/qtlibtorrent/qbtsession.h
+++ b/src/qtlibtorrent/qbtsession.h
@@ -135,10 +135,10 @@ public slots:
   void startTorrentsInPause(bool b);
   void setDefaultTempPath(QString temppath);
   void setAppendLabelToSavePath(bool append);
-  void appendLabelToTorrentSavePath(QTorrentHandle &h);
-  void changeLabelInTorrentSavePath(QTorrentHandle &h, QString old_label, QString new_label);
+  void appendLabelToTorrentSavePath(const QTorrentHandle &h);
+  void changeLabelInTorrentSavePath(const QTorrentHandle &h, QString old_label, QString new_label);
 #if LIBTORRENT_VERSION_MINOR > 14
-  void appendqBextensionToTorrent(QTorrentHandle &h, bool append);
+  void appendqBextensionToTorrent(const QTorrentHandle &h, bool append);
   void setAppendqBExtension(bool append);
 #endif
   void applyEncryptionSettings(libtorrent::pe_settings se);
@@ -186,21 +186,21 @@ signals:
   void addedTorrent(const QTorrentHandle& h);
   void deletedTorrent(QString hash);
   void torrentAboutToBeRemoved(const QTorrentHandle &h);
-  void pausedTorrent(QTorrentHandle& h);
-  void resumedTorrent(QTorrentHandle& h);
-  void finishedTorrent(QTorrentHandle& h);
-  void fullDiskError(QTorrentHandle& h, QString msg);
+  void pausedTorrent(const QTorrentHandle& h);
+  void resumedTorrent(const QTorrentHandle& h);
+  void finishedTorrent(const QTorrentHandle& h);
+  void fullDiskError(const QTorrentHandle& h, QString msg);
   void trackerError(QString hash, QString time, QString msg);
-  void trackerAuthenticationRequired(QTorrentHandle& h);
+  void trackerAuthenticationRequired(const QTorrentHandle& h);
   void newDownloadedTorrent(QString path, QString url);
   void updateFileSize(QString hash);
   void downloadFromUrlFailure(QString url, QString reason);
-  void torrentFinishedChecking(QTorrentHandle& h);
-  void metadataReceived(QTorrentHandle &h);
-  void savePathChanged(QTorrentHandle &h);
+  void torrentFinishedChecking(const QTorrentHandle& h);
+  void metadataReceived(const QTorrentHandle &h);
+  void savePathChanged(const QTorrentHandle &h);
   void newConsoleMessage(QString msg);
   void alternativeSpeedsModeChanged(bool alternative);
-  void recursiveTorrentDownloadPossible(QTorrentHandle &h);
+  void recursiveTorrentDownloadPossible(const QTorrentHandle &h);
 
 private:
 #if LIBTORRENT_VERSION_MINOR < 15
diff --git a/src/qtlibtorrent/qtorrenthandle.cpp b/src/qtlibtorrent/qtorrenthandle.cpp
index 9488eaccd..38b16b02f 100644
--- a/src/qtlibtorrent/qtorrenthandle.cpp
+++ b/src/qtlibtorrent/qtorrenthandle.cpp
@@ -381,13 +381,13 @@ void QTorrentHandle::downloading_pieces(bitfield &bf) const {
 // Setters
 //
 
-void QTorrentHandle::pause() {
+void QTorrentHandle::pause() const {
   torrent_handle::auto_managed(false);
   torrent_handle::pause();
   torrent_handle::save_resume_data();
 }
 
-void QTorrentHandle::resume() {
+void QTorrentHandle::resume() const {
   if(has_error()) torrent_handle::clear_error();
   const QString torrent_hash = hash();
   bool has_persistant_error = TorrentPersistentData::hasError(torrent_hash);
@@ -409,17 +409,17 @@ void QTorrentHandle::resume() {
   }
 }
 
-void QTorrentHandle::remove_url_seed(QString seed) {
+void QTorrentHandle::remove_url_seed(QString seed) const {
   torrent_handle::remove_url_seed(seed.toStdString());
 }
 
-void QTorrentHandle::add_url_seed(QString seed) {
+void QTorrentHandle::add_url_seed(QString seed) const {
   const std::string str_seed = seed.toStdString();
   qDebug("calling torrent_handle::add_url_seed(%s)", str_seed.c_str());
   torrent_handle::add_url_seed(str_seed);
 }
 
-void QTorrentHandle::prioritize_files(const std::vector<int> &v) {
+void QTorrentHandle::prioritize_files(const std::vector<int> &v) const {
   // Does not do anything for seeding torrents
   if(v.size() != (unsigned int)torrent_handle::get_torrent_info().num_files())
     return;
@@ -458,7 +458,7 @@ void QTorrentHandle::file_priority(int index, int priority) const {
   }
 }
 
-void QTorrentHandle::set_tracker_login(QString username, QString password) {
+void QTorrentHandle::set_tracker_login(QString username, QString password) const {
   torrent_handle::set_tracker_login(std::string(username.toLocal8Bit().constData()), std::string(password.toLocal8Bit().constData()));
 }
 
@@ -472,7 +472,7 @@ void QTorrentHandle::move_storage(QString new_path) const {
   torrent_handle::move_storage(new_path.toLocal8Bit().constData());
 }
 
-bool QTorrentHandle::save_torrent_file(QString path) {
+bool QTorrentHandle::save_torrent_file(QString path) const {
   if(!torrent_handle::has_metadata()) return false;
   QFile met_file(path);
   if(met_file.open(QIODevice::WriteOnly)) {
@@ -489,7 +489,7 @@ bool QTorrentHandle::save_torrent_file(QString path) {
   return false;
 }
 
-void QTorrentHandle::add_tracker(const announce_entry& url) {
+void QTorrentHandle::add_tracker(const announce_entry& url) const {
 #if LIBTORRENT_VERSION_MINOR > 14
   torrent_handle::add_tracker(url);
 #else
@@ -510,7 +510,7 @@ void QTorrentHandle::add_tracker(const announce_entry& url) {
 #endif
 }
 
-void QTorrentHandle::prioritize_first_last_piece(bool b) {
+void QTorrentHandle::prioritize_first_last_piece(bool b) const {
   // Detect main file
   int rank=0;
   int main_file_index = 0;
@@ -543,7 +543,7 @@ void QTorrentHandle::prioritize_first_last_piece(bool b) {
   torrent_handle::piece_priority(last_piece, prio);
 }
 
-void QTorrentHandle::rename_file(int index, QString name) {
+void QTorrentHandle::rename_file(int index, QString name) const {
   torrent_handle::rename_file(index, std::string(name.toUtf8().constData()));
 }
 
diff --git a/src/qtlibtorrent/qtorrenthandle.h b/src/qtlibtorrent/qtorrenthandle.h
index c9ad52b6b..1d079fe07 100644
--- a/src/qtlibtorrent/qtorrenthandle.h
+++ b/src/qtlibtorrent/qtorrenthandle.h
@@ -115,18 +115,18 @@ class QTorrentHandle : public libtorrent::torrent_handle {
     //
     // Setters
     //
-    void pause();
-    void resume();
-    void remove_url_seed(QString seed);
-    void add_url_seed(QString seed);
-    void prioritize_files(const std::vector<int> &v);
+    void pause() const;
+    void resume() const;
+    void remove_url_seed(QString seed) const;
+    void add_url_seed(QString seed) const;
+    void prioritize_files(const std::vector<int> &v) const;
     void file_priority(int index, int priority) const;
-    void set_tracker_login(QString username, QString password);
+    void set_tracker_login(QString username, QString password) const;
     void move_storage(QString path) const;
-    void add_tracker(const libtorrent::announce_entry& url);
-    void prioritize_first_last_piece(bool b);
-    void rename_file(int index, QString name);
-    bool save_torrent_file(QString path);
+    void add_tracker(const libtorrent::announce_entry& url) const;
+    void prioritize_first_last_piece(bool b) const;
+    void rename_file(int index, QString name) const;
+    bool save_torrent_file(QString path) const;
 
     //
     // Operators
diff --git a/src/qtlibtorrent/torrentmodel.cpp b/src/qtlibtorrent/torrentmodel.cpp
index 338322d7d..1bf1d2ee1 100644
--- a/src/qtlibtorrent/torrentmodel.cpp
+++ b/src/qtlibtorrent/torrentmodel.cpp
@@ -210,11 +210,11 @@ void TorrentModel::populate() {
   connect(QBtSession::instance(), SIGNAL(addedTorrent(QTorrentHandle)), SLOT(addTorrent(QTorrentHandle)));
   connect(QBtSession::instance(), SIGNAL(torrentAboutToBeRemoved(QTorrentHandle)), SLOT(handleTorrentAboutToBeRemoved(QTorrentHandle)));
   connect(QBtSession::instance(), SIGNAL(deletedTorrent(QString)), SLOT(removeTorrent(QString)));
-  connect(QBtSession::instance(), SIGNAL(finishedTorrent(QTorrentHandle&)), SLOT(handleTorrentUpdate(QTorrentHandle&)));
-  connect(QBtSession::instance(), SIGNAL(metadataReceived(QTorrentHandle&)), SLOT(handleTorrentUpdate(QTorrentHandle&)));
-  connect(QBtSession::instance(), SIGNAL(resumedTorrent(QTorrentHandle&)), SLOT(handleTorrentUpdate(QTorrentHandle&)));
-  connect(QBtSession::instance(), SIGNAL(pausedTorrent(QTorrentHandle&)), SLOT(handleTorrentUpdate(QTorrentHandle&)));
-  connect(QBtSession::instance(), SIGNAL(torrentFinishedChecking(QTorrentHandle&)), SLOT(handleTorrentUpdate(QTorrentHandle&)));
+  connect(QBtSession::instance(), SIGNAL(finishedTorrent(QTorrentHandle)), SLOT(handleTorrentUpdate(QTorrentHandle)));
+  connect(QBtSession::instance(), SIGNAL(metadataReceived(QTorrentHandle)), SLOT(handleTorrentUpdate(QTorrentHandle)));
+  connect(QBtSession::instance(), SIGNAL(resumedTorrent(QTorrentHandle)), SLOT(handleTorrentUpdate(QTorrentHandle)));
+  connect(QBtSession::instance(), SIGNAL(pausedTorrent(QTorrentHandle)), SLOT(handleTorrentUpdate(QTorrentHandle)));
+  connect(QBtSession::instance(), SIGNAL(torrentFinishedChecking(QTorrentHandle)), SLOT(handleTorrentUpdate(QTorrentHandle)));
 }
 
 TorrentModel::~TorrentModel() {
@@ -356,7 +356,7 @@ void TorrentModel::endRemoveTorrent()
   endRemoveRows();
 }
 
-void TorrentModel::handleTorrentUpdate(QTorrentHandle &h)
+void TorrentModel::handleTorrentUpdate(const QTorrentHandle &h)
 {
   const int row = torrentRow(h.hash());
   if(row >= 0) {
diff --git a/src/qtlibtorrent/torrentmodel.h b/src/qtlibtorrent/torrentmodel.h
index e9dd3a174..32bcef8f5 100644
--- a/src/qtlibtorrent/torrentmodel.h
+++ b/src/qtlibtorrent/torrentmodel.h
@@ -103,7 +103,7 @@ signals:
 private slots:
   void addTorrent(const QTorrentHandle& h);
   void removeTorrent(const QString &hash);
-  void handleTorrentUpdate(QTorrentHandle &h);
+  void handleTorrentUpdate(const QTorrentHandle &h);
   void notifyTorrentChanged(int row);
   void forceModelRefresh();
   void handleTorrentLabelChange(QString previous, QString current);
diff --git a/src/transferlistwidget.h b/src/transferlistwidget.h
index da672b8bd..8018a47f6 100644
--- a/src/transferlistwidget.h
+++ b/src/transferlistwidget.h
@@ -107,7 +107,7 @@ protected slots:
   void askNewLabelForSelection();
 
 signals:
-  void currentTorrentChanged(QTorrentHandle &h);
+  void currentTorrentChanged(const QTorrentHandle &h);
 
 private:
   TransferListDelegate *listDelegate;
diff --git a/src/webui/eventmanager.cpp b/src/webui/eventmanager.cpp
index aba8801ab..277010975 100644
--- a/src/webui/eventmanager.cpp
+++ b/src/webui/eventmanager.cpp
@@ -365,7 +365,7 @@ QVariantMap EventManager::getPropGeneralInfo(QString hash) const {
   return data;
 }
 
-void EventManager::addedTorrent(QTorrentHandle& h)
+void EventManager::addedTorrent(const QTorrentHandle& h)
 {
   modifiedTorrent(h);
 }
@@ -375,7 +375,7 @@ void EventManager::deletedTorrent(QString hash)
   event_list.remove(hash);
 }
 
-void EventManager::modifiedTorrent(QTorrentHandle h)
+void EventManager::modifiedTorrent(const QTorrentHandle& h)
 {
   QString hash = h.hash();
   QVariantMap event;
diff --git a/src/webui/eventmanager.h b/src/webui/eventmanager.h
index b1a025f02..01104c1df 100644
--- a/src/webui/eventmanager.h
+++ b/src/webui/eventmanager.h
@@ -57,9 +57,9 @@ public:
   void setGlobalPreferences(QVariantMap m) const;
 
 public slots:
-  void addedTorrent(QTorrentHandle& h);
+  void addedTorrent(const QTorrentHandle& h);
   void deletedTorrent(QString hash);
-  void modifiedTorrent(QTorrentHandle h);
+  void modifiedTorrent(const QTorrentHandle& h);
 };
 
 #endif
diff --git a/src/webui/httpserver.cpp b/src/webui/httpserver.cpp
index 2c07bf339..79078262e 100644
--- a/src/webui/httpserver.cpp
+++ b/src/webui/httpserver.cpp
@@ -97,7 +97,7 @@ HttpServer::HttpServer(int msec, QObject* parent) : QTcpServer(parent) {
       manager->addedTorrent(h);
   }
   //connect QBtSession::instance() to manager
-  connect(QBtSession::instance(), SIGNAL(addedTorrent(QTorrentHandle&)), manager, SLOT(addedTorrent(QTorrentHandle&)));
+  connect(QBtSession::instance(), SIGNAL(addedTorrent(QTorrentHandle)), manager, SLOT(addedTorrent(QTorrentHandle)));
   connect(QBtSession::instance(), SIGNAL(deletedTorrent(QString)), manager, SLOT(deletedTorrent(QString)));
   //set timer
   timer = new QTimer(this);