fix bug when everything was treated as animation, bug with not working group amount of messages, handled the situation when preview is painted but the file was lost

ui/models/account.cpp

@@ -31,7 +31,8 @@ Models::Account::Account(const QMap<QString, QVariant>& data, Models::Item* pare
     avatarPath(data.value("avatarPath").toString()),
     state(Shared::ConnectionState::disconnected),
     availability(Shared::Availability::offline),
-    passwordType(Shared::AccountPassword::plain)
+    passwordType(Shared::AccountPassword::plain),
+    wasEverConnected(false)
 {
     QMap<QString, QVariant>::const_iterator sItr = data.find("state");
     if (sItr != data.end()) {
@@ -56,8 +57,19 @@ void Models::Account::setState(Shared::ConnectionState p_state)
     if (state != p_state) {
         state = p_state;
         changed(2);
-        if (state == Shared::ConnectionState::disconnected) {
+        switch (state) {
+            case Shared::ConnectionState::disconnected:
                 toOfflineState();
+                break;
+            case Shared::ConnectionState::connected:
+                if (wasEverConnected) {
+                    emit reconnected();
+                } else {
+                    wasEverConnected = true;
+                }
+                break;
+            default:
+                break;
         }
     }
 }

ui/models/account.h

@@ -77,6 +77,9 @@ namespace Models {
         QString getBareJid() const;
         QString getFullJid() const;
         
+    signals:
+        void reconnected();
+        
     private:
         QString login;
         QString password;
@@ -87,6 +90,7 @@ namespace Models {
         Shared::ConnectionState state;
         Shared::Availability availability;
         Shared::AccountPassword passwordType;
+        bool wasEverConnected;
         
     protected slots:
         void toOfflineState() override;

ui/models/contact.cpp

@@ -240,3 +240,9 @@ QString Models::Contact::getDisplayedName() const
     return getContactName();
 }
 
+void Models::Contact::handleRecconnect()
+{
+    if (getMessagesCount() > 0) {
+        feed->requestLatestMessages();
+    }
+}

ui/models/contact.h

@@ -56,6 +56,8 @@ public:
     QString getStatus() const;
     QString getDisplayedName() const override;
     
+    void handleRecconnect();        //this is a special method Models::Roster calls when reconnect happens
+    
 protected:
     void _removeChild(int index) override;
     void _appendChild(Models::Item * child) override;

ui/models/reference.cpp

@@ -104,6 +104,8 @@ void Models::Reference::onChildChanged(Models::Item* item, int row, int col)
 {
     if (item == original) {
         emit childChanged(this, row, col);
+    } else {
+        emit childChanged(item, row, col);
     }
 }
 

ui/models/roster.cpp

@@ -48,6 +48,7 @@ Models::Roster::~Roster()
 void Models::Roster::addAccount(const QMap<QString, QVariant>& data)
 {
     Account* acc = new Account(data);
+    connect(acc, &Account::reconnected, this, &Roster::onAccountReconnected);
     root->appendChild(acc);
     accounts.insert(std::make_pair(acc->getName(), acc));
     accountsModel->addAccount(acc);
@@ -744,6 +745,7 @@ void Models::Roster::removeAccount(const QString& account)
         }
     }
     
+    disconnect(acc, &Account::reconnected, this, &Roster::onAccountReconnected);
     acc->deleteLater();
 }
 
@@ -1003,3 +1005,15 @@ Models::Element * Models::Roster::getElement(const Models::Roster::ElId& id)
     return NULL;
 }
 
+void Models::Roster::onAccountReconnected()
+{
+    Account* acc = static_cast<Account*>(sender());
+    
+    QString accName = acc->getName();
+    for (const std::pair<const ElId, Contact*>& pair : contacts) {
+        if (pair.first.account == accName) {
+            pair.second->handleRecconnect();
+        }
+    }
+}
+

ui/models/roster.h

@@ -100,6 +100,7 @@ private:
     
 private slots:
     void onAccountDataChanged(const QModelIndex& tl, const QModelIndex& br, const QVector<int>& roles);
+    void onAccountReconnected();
     void onChildChanged(Models::Item* item, int row, int col);
     void onChildIsAboutToBeInserted(Item* parent, int first, int last);
     void onChildInserted();

ui/widgets/messageline/messagedelegate.cpp

@@ -353,6 +353,10 @@ void MessageDelegate::paintPreview(const Models::FeedItem& data, QPainter* paint
         previews->insert(std::make_pair(data.id, preview));
     }
     
+    if (!preview->isFileReachable()) {      //this is the situation when the file preview couldn't be painted because the file was moved 
+        emit invalidPath(data.id);          //or deleted. This signal notifies the model, and the model notifies the core, preview can 
+    }                                       //handle being invalid for as long as I need and can be even become valid again with a new path
+    
     option.rect.adjust(0, preview->size().height() + textMargin, 0, 0);
 }
 

ui/widgets/messageline/messagefeed.cpp

@@ -304,7 +304,7 @@ QVariant Models::MessageFeed::data(const QModelIndex& index, int role) const
                 std::set<QString>::const_iterator umi = unreadMessages->find(item.id);
                 if (umi != unreadMessages->end()) {
                     unreadMessages->erase(umi);
-                    emit unreadMessagesCount();
+                    emit unreadMessagesCountChanged();
                 }
                 
                 item.sentByMe = sentByMe(*msg);
@@ -370,7 +370,6 @@ void Models::MessageFeed::fetchMore(const QModelIndex& parent)
     if (syncState == incomplete) {
         syncState = syncing;
         emit syncStateChange(syncState);
-        emit requestStateChange(true);
         
         if (storage.size() == 0) {
             emit requestArchive("");
@@ -398,7 +397,6 @@ void Models::MessageFeed::responseArchive(const std::list<Shared::Message> list,
             syncState = incomplete;
         }
         emit syncStateChange(syncState);
-        emit requestStateChange(false);
     }
 }
 
@@ -656,3 +654,13 @@ Models::MessageFeed::SyncState Models::MessageFeed::getSyncState() const
 {
     return syncState;
 }
+
+void Models::MessageFeed::requestLatestMessages()
+{
+    if (syncState != syncing) {
+        syncState = syncing;
+        emit syncStateChange(syncState);
+        
+        emit requestArchive("");
+    }
+}

ui/widgets/messageline/messagefeed.h

@@ -77,11 +77,12 @@ public:
     void decrementObservers();
     SyncState getSyncState() const;
     
+    void requestLatestMessages();       //this method is used by Models::Contact to request latest messages after reconnection
+    
 signals:
     void requestArchive(const QString& before);
-    void requestStateChange(bool requesting);
     void fileDownloadRequest(const QString& url);
-    void unreadMessagesCountChanged();
+    void unreadMessagesCountChanged() const;
     void newMessage(const Shared::Message& msg);
     void unnoticedMessage(const Shared::Message& msg);
     void localPathInvalid(const QString& path);