feat: prohibition to remove messages in group chat

src/chatlog/chatlog.cpp

@@ -49,8 +49,8 @@ T clamp(T x, T min, T max)
     return x;
 }
 
-ChatLog::ChatLog(QWidget* parent)
-    : QGraphicsView(parent)
+ChatLog::ChatLog(const bool canRemove, QWidget* parent)
+    : QGraphicsView(parent), canRemove(canRemove)
 {
     // Create the scene
     busyScene = new QGraphicsScene(this);
@@ -391,7 +391,7 @@ void ChatLog::insertChatlineAtBottom(const QList<ChatLine::Ptr>& newLines)
     if (newLines.isEmpty())
         return;
 
-    if (lines.size() + DEF_NUM_MSG_TO_LOAD >= maxMessages) {
+    if (canRemove && lines.size() + DEF_NUM_MSG_TO_LOAD >= maxMessages) {
         removeFirsts(DEF_NUM_MSG_TO_LOAD);
     }
 
@@ -442,7 +442,7 @@ void ChatLog::insertChatlinesOnTop(const QList<ChatLine::Ptr>& newLines)
         combLines.push_back(l);
     }
 
-    if (lines.size() + DEF_NUM_MSG_TO_LOAD >= maxMessages) {
+    if (canRemove && lines.size() + DEF_NUM_MSG_TO_LOAD >= maxMessages) {
         removeLasts(DEF_NUM_MSG_TO_LOAD);
     }
 
@@ -804,7 +804,6 @@ void ChatLog::checkVisibility(bool causedWheelEvent)
     }
 
     if (causedWheelEvent) {
-        qDebug() << "causedWheelEvent";
         if (lowerBound != lines.cend() && lowerBound->get()->row == 0) {
             emit loadHistoryLower();
         } else if (upperBound == lines.cend()) {

src/chatlog/chatlog.h

@@ -41,7 +41,7 @@ class ChatLog : public QGraphicsView
 {
     Q_OBJECT
 public:
-    explicit ChatLog(QWidget* parent = nullptr);
+    explicit ChatLog(const bool canRemove, QWidget* parent = nullptr);
     virtual ~ChatLog();
 
     void insertChatlineAtBottom(ChatLine::Ptr l);
@@ -182,6 +182,7 @@ private:
 
     int numRemove{0};
     const int maxMessages{300};
+    bool canRemove;
 };
 
 #endif // CHATLOG_H

src/model/contact.h

@@ -37,6 +37,8 @@ public:
     virtual void setEventFlag(bool flag) = 0;
     virtual bool getEventFlag() const = 0;
 
+    virtual bool useHistory() const = 0; // TODO: remove after added history in group chat
+
 signals:
     void displayedNameChanged(const QString& newName);
 };

src/model/friend.cpp

@@ -166,3 +166,8 @@ bool Friend::isOnline() const
 {
     return friendStatus != Status::Status::Offline && friendStatus != Status::Status::Blocked;
 }
+
+bool Friend::useHistory() const
+{
+    return true;
+}

src/model/friend.h

@@ -55,6 +55,8 @@ public:
     Status::Status getStatus() const;
     bool isOnline() const;
 
+    bool useHistory() const override final;
+
 signals:
     void nameChanged(const ToxPk& friendId, const QString& name);
     void aliasChanged(const ToxPk& friendId, QString alias);

src/model/group.cpp

@@ -205,6 +205,11 @@ QString Group::getSelfName() const
     return selfName;
 }
 
+bool Group::useHistory() const
+{
+    return false;
+}
+
 void Group::stopAudioOfDepartedPeers(const ToxPk& peerPk)
 {
     if (avGroupchat) {

src/model/group.h

@@ -61,6 +61,8 @@ public:
     void setSelfName(const QString& name);
     QString getSelfName() const;
 
+    bool useHistory() const override final;
+
 signals:
     void titleChangedByUser(const QString& title);
     void titleChanged(const QString& author, const QString& title);

src/widget/form/genericchatform.cpp

@@ -261,7 +261,7 @@ GenericChatForm::GenericChatForm(const Contact* contact, IChatLog& chatLog,
     headWidget = new ChatFormHeader();
     searchForm = new SearchForm();
     dateInfo = new QLabel(this);
-    chatWidget = new ChatLog(this);
+    chatWidget = new ChatLog(contact->useHistory(), this);
     chatWidget->setBusyNotification(ChatMessage::createBusyNotification());
     searchForm->hide();
     dateInfo->setAlignment(Qt::AlignHCenter);
@@ -703,7 +703,6 @@ void GenericChatForm::loadHistoryFrom(const QDateTime &time)
 
     int add = DEF_NUM_MSG_TO_LOAD;
     if (begin.get() + DEF_NUM_MSG_TO_LOAD > chatLog.getNextIdx().get()) {
-        auto aTest = chatLog.getNextIdx().get();
         add = chatLog.getNextIdx().get() - begin.get();
     }
     auto end = ChatLogIdx(begin.get() + add);