referencing seems to be working now

ui/models/contact.cpp

@@ -226,9 +226,9 @@ void Models::Contact::_removeChild(int index)
     refresh();
 }
 
-void Models::Contact::appendChild(Models::Item* child)
+void Models::Contact::_appendChild(Models::Item* child)
 {
-    Item::appendChild(child);
+    Item::_appendChild(child);
     connect(child, &Item::childChanged, this, &Contact::refresh);
     refresh();
 }
@@ -334,17 +334,20 @@ void Models::Contact::getMessages(Models::Contact::Messages& container) const
 
 void Models::Contact::toOfflineState()
 {
-    emit childIsAboutToBeRemoved(this, 0, childItems.size());
+    std::deque<Item*>::size_type size = childItems.size();
-    for (std::deque<Item*>::size_type i = 0; i < childItems.size(); ++i) {
+    if (size > 0) {
-        Item* item = childItems[i];
+        emit childIsAboutToBeRemoved(this, 0, size - 1);
+        for (std::deque<Item*>::size_type i = 0; i < size; ++i) {
+            Item* item = childItems[0];
             disconnect(item, &Item::childChanged, this, &Contact::refresh);
-        Item::_removeChild(i);
+            Item::_removeChild(0);
             item->deleteLater();
         }
         childItems.clear();
         presences.clear();
         emit childRemoved();
         refresh();
+    }
 }
 
 QString Models::Contact::getDisplayedName() const

ui/models/contact.h

@@ -57,7 +57,6 @@ public:
     void addPresence(const QString& name, const QMap<QString, QVariant>& data);
     void removePresence(const QString& name);
     
-    void appendChild(Models::Item * child) override;
     QString getContactName() const;
     QString getStatus() const;
     
@@ -72,6 +71,7 @@ public:
     
 protected:
     void _removeChild(int index) override;
+    void _appendChild(Models::Item * child) override;
     bool columnInvolvedInDisplay(int col) override;
     const Account* getParentAccount() const override;
     

ui/models/group.cpp

@@ -30,9 +30,9 @@ Models::Group::~Group()
 {
 }
 
-void Models::Group::appendChild(Models::Item* child)
+void Models::Group::_appendChild(Models::Item* child)
 {
-    Item::appendChild(child);
+    Item::_appendChild(child);
     connect(child, &Item::childChanged, this, &Group::refresh);
     changed(1);
     refresh();
@@ -83,10 +83,15 @@ void Models::Group::refresh()
 {
     unsigned int newAmount(0);
     
-    for (std::deque<Models::Item*>::const_iterator itr = childItems.begin(), end = childItems.end(); itr != end; ++itr) {
+    for (Models::Item* item : childItems) {
-        Models::Contact* cnt = static_cast<Models::Contact*>(*itr);
+        if (item->type == reference) {
+            item = static_cast<Reference*>(item)->dereference();
+        }
+        if (item->type == contact) {
+            Models::Contact* cnt = static_cast<Models::Contact*>(item);
             newAmount += cnt->getMessagesCount();
         }
+    }
     
     setUnreadMessages(newAmount);
 }
@@ -95,12 +100,17 @@ unsigned int Models::Group::getOnlineContacts() const
 {
     unsigned int amount(0);
     
-    for (std::deque<Models::Item*>::const_iterator itr = childItems.begin(), end = childItems.end(); itr != end; ++itr) {
+    for (Models::Item* item : childItems) {
-        Models::Contact* cnt = static_cast<Models::Contact*>(*itr);
+        if (item->type == reference) {
+            item = static_cast<Reference*>(item)->dereference();
+        }
+        if (item->type == contact) {
+            Models::Contact* cnt = static_cast<Models::Contact*>(item);
             if (cnt->getAvailability() != Shared::Availability::offline) {
                 ++amount;
             }
         }
+    }
     
     return amount;
 }

ui/models/group.h

@@ -32,7 +32,6 @@ public:
     Group(const QMap<QString, QVariant> &data, Item *parentItem = 0);
     ~Group();
     
-    void appendChild(Models::Item* child) override;
     int columnCount() const override;
     QVariant data(int column) const override;
     
@@ -41,6 +40,7 @@ public:
 
 protected:
     void _removeChild(int index) override;
+    void _appendChild(Models::Item* child) override;
     void setUnreadMessages(unsigned int amount);
     
 private slots:

ui/models/item.cpp

@@ -29,7 +29,9 @@ Models::Item::Item(Type p_type, const QMap<QString, QVariant> &p_data, Item *p_p
     name(""),
     childItems(),
     parent(p_parent),
-    references()
+    references(),
+    destroyingByParent(false),
+    destroyingByOriginal(false)
 {
     QMap<QString, QVariant>::const_iterator itr = p_data.find("name");
     if (itr != p_data.end()) {
@@ -48,15 +50,24 @@ Models::Item::Item(const Models::Item& other):
 
 Models::Item::~Item()
 {
-    for (Reference* ref : references) {
+    if (!destroyingByParent) {
-        Item* parent = ref->parentItem();
+        Item* parent = parentItem();
         if (parent != nullptr) {
-            parent->removeChild(ref->row());
+            if (parent->type == reference) {
+                parent->Item::removeChild(row());
+            } else {
+                parent->removeChild(row());
             }
+        }
+    }
+    
+    for (Reference* ref : references) {
+        ref->destroyingByOriginal = true;
         delete ref;
     }
     
     for (Item* child : childItems) {
+        child->destroyingByParent = true;
         delete child;
     }
 }
@@ -70,6 +81,11 @@ void Models::Item::setName(const QString& p_name)
 }
 
 void Models::Item::appendChild(Models::Item* child)
+{
+    _appendChild(child);
+}
+
+void Models::Item::_appendChild(Models::Item* child)
 {
     bool moving = false;
     int newRow = 0;

ui/models/item.h

@@ -88,27 +88,26 @@ class Item : public QObject{
         int getContact(const QString& jid) const;
         std::set<Reference*>::size_type referencesCount() const;
         
-        void addReference(Reference* ref);
-        void removeReference(Reference* ref);
-        
     protected:
         virtual void changed(int col);
         virtual void _removeChild(int index);
+        virtual void _appendChild(Item *child);
         virtual bool columnInvolvedInDisplay(int col);
         virtual const Account* getParentAccount() const;
+        void addReference(Reference* ref);
+        void removeReference(Reference* ref);
         
     protected slots:
         void onChildChanged(Models::Item* item, int row, int col);
+        virtual void toOfflineState();
         
     protected:
         QString name;
         std::deque<Item*> childItems;
         Item* parent;
         std::set<Reference*> references;
-        
+        bool destroyingByParent;
-    protected slots:
+        bool destroyingByOriginal;
-        virtual void toOfflineState();
-        
     };
 
 }

ui/models/reference.cpp

@@ -29,7 +29,7 @@ Models::Reference::Reference(Models::Item* original, Models::Item* parent):
     cx(-1),
     c(false)
 {
-    connect(original, &Item::childChanged, this, &Reference::onChildChanged);
+    connect(original, &Item::childChanged, this, &Reference::onChildChanged, Qt::QueuedConnection);
     connect(original, &Item::childIsAboutToBeInserted, this, &Reference::onChildIsAboutToBeInserted);
     connect(original, &Item::childInserted, this, &Reference::onChildInserted);
     connect(original, &Item::childIsAboutToBeRemoved, this, &Reference::onChildIsAboutToBeRemoved);
@@ -38,10 +38,20 @@ Models::Reference::Reference(Models::Item* original, Models::Item* parent):
     connect(original, &Item::childMoved, this, &Reference::onChildMoved);
     
     original->addReference(this);
+    
+    for (int i = 0; i < original->childCount(); i++) {
+        Reference* ref = new Reference(original->child(i));
+        Item::appendChild(ref);
+    }
 }
 
 Models::Reference::~Reference()
 {
+    if (!destroyingByOriginal) {
+        original->removeReference(this);
+    }
+    
+    disconnect(original, &Item::childChanged, this, &Reference::onChildChanged);
     disconnect(original, &Item::childIsAboutToBeInserted, this, &Reference::onChildIsAboutToBeInserted);
     disconnect(original, &Item::childInserted, this, &Reference::onChildInserted);
     disconnect(original, &Item::childIsAboutToBeRemoved, this, &Reference::onChildIsAboutToBeRemoved);
@@ -120,13 +130,13 @@ void Models::Reference::onChildInserted()
 void Models::Reference::onChildIsAboutToBeRemoved(Models::Item* parent, int first, int last)
 {
     if (parent == original) {
+        emit childIsAboutToBeRemoved(this, first, last);
         for (int i = first; i <= last; ++i) {
-            Reference* ref = static_cast<Reference*>(childItems[i]);
+            Reference* ref = static_cast<Reference*>(childItems[first]);
-            Item* orig = original->child(i);
+            Item::_removeChild(first);
-            orig->removeReference(ref);
-            Item::removeChild(i);
             delete ref;
         }
+        childRemoved();
     }
 }
 

ui/models/roster.cpp

@@ -518,7 +518,6 @@ void Models::Roster::removeGroup(const QString& account, const QString& name)
         if (cont->referencesCount() == 1) {
             toInsert.push_back(ref);
         } else {
-            cont->removeReference(ref);
             delete ref;
         }
     }
@@ -626,7 +625,6 @@ void Models::Roster::removeContact(const QString& account, const QString& jid, c
         qDebug() << "An attempt to remove last instance of contact" << jid << "from the group" << group << ", contact will be moved to ungrouped contacts of" << account;
         acc->appendChild(ref);
     } else {
-        cont->removeReference(ref);
         delete ref;
     }