Improved start_All and resume_All functions to detect if a torrent's state changed or not. This way, it doesn't flood the GUI if the user keeps on clicking on those buttons

src/GUI.cpp

@@ -1300,7 +1300,7 @@ void GUI::configureSession(bool deleteOptions){
 void GUI::on_actionPause_All_triggered(){
   QString fileHash;
   // Pause all torrents
-  BTSession.pauseAllTorrents();
+  if(BTSession.pauseAllTorrents()){
     // update download list
     unsigned int nbRows = DLListModel->rowCount();
     for(unsigned int i=0; i<nbRows; ++i){
@@ -1319,6 +1319,7 @@ void GUI::on_actionPause_All_triggered(){
       setRowColor(i, "red");
     }
     setInfoBar(tr("All downloads were paused."));
+  }
 }
 
 // pause selected items in the list
@@ -1351,7 +1352,7 @@ void GUI::on_actionPause_triggered(){
 void GUI::on_actionStart_All_triggered(){
   QString fileHash;
   // Pause all torrents
-  BTSession.resumeAllTorrents();
+  if(BTSession.resumeAllTorrents()){
     // update download list
     unsigned int nbRows = DLListModel->rowCount();
     for(unsigned int i=0; i<nbRows; ++i){
@@ -1364,6 +1365,7 @@ void GUI::on_actionStart_All_triggered(){
       setRowColor(i, "grey");
     }
     setInfoBar(tr("All downloads were resumed."));
+  }
 }
 
 // start selected items in the list

src/bittorrent.cpp

@@ -612,25 +612,31 @@ void bittorrent::saveTrackerFile(const QString& hash){
 }
 
 // Pause all torrents in session
-void bittorrent::pauseAllTorrents(){
+bool bittorrent::pauseAllTorrents(){
+  bool paused_torrents = false;
   std::vector<torrent_handle> handles = s->get_torrents();
   for(unsigned int i=0; i<handles.size(); ++i){
     torrent_handle h = handles[i];
     if(h.is_valid() && !h.is_paused()){
       h.pause();
+      paused_torrents = true;
     }
   }
+  return paused_torrents;
 }
 
 // Resume all torrents in session
-void bittorrent::resumeAllTorrents(){
+bool bittorrent::resumeAllTorrents(){
+  bool resumed_torrents = false;
   std::vector<torrent_handle> handles = s->get_torrents();
   for(unsigned int i=0; i<handles.size(); ++i){
     torrent_handle h = handles[i];
     if(h.is_valid() && h.is_paused()){
       h.resume();
+      resumed_torrents = true;
     }
   }
+  return resumed_torrents;
 }
 
 // Add uT PeX extension to bittorrent session

src/bittorrent.h

@@ -91,8 +91,8 @@ class bittorrent : public QObject{
     void downloadFromURLList(const QStringList& url_list);
     void deleteTorrent(const QString& hash, bool permanent = false);
     void pauseTorrent(const QString& hash);
-    void pauseAllTorrents();
+    bool pauseAllTorrents();
-    void resumeAllTorrents();
+    bool resumeAllTorrents();
     void resumeTorrent(const QString& hash);
     void enableDHT();
     void disableDHT();