revert(chatlog): "prohibition to remove messages in group chat"

This reverts commit 5aeac56b76.

src/chatlog/chatlog.cpp

@@ -52,8 +52,8 @@ T clamp(T x, T min, T max)
     return x;
 }
 
-ChatLog::ChatLog(const bool canRemove, QWidget* parent)
-    : QGraphicsView(parent), canRemove(canRemove)
+ChatLog::ChatLog(QWidget* parent)
+    : QGraphicsView(parent)
 {
     // Create the scene
     busyScene = new QGraphicsScene(this);
@@ -394,7 +394,7 @@ void ChatLog::insertChatlineAtBottom(const QList<ChatLine::Ptr>& newLines)
     if (newLines.isEmpty())
         return;
 
-    if (canRemove && lines.size() + DEF_NUM_MSG_TO_LOAD >= maxMessages) {
+    if (lines.size() + DEF_NUM_MSG_TO_LOAD >= maxMessages) {
         removeFirsts(DEF_NUM_MSG_TO_LOAD);
     }
 
@@ -445,7 +445,7 @@ void ChatLog::insertChatlinesOnTop(const QList<ChatLine::Ptr>& newLines)
         combLines.push_back(l);
     }
 
-    if (canRemove && lines.size() + DEF_NUM_MSG_TO_LOAD >= maxMessages) {
+    if (lines.size() + DEF_NUM_MSG_TO_LOAD >= maxMessages) {
         removeLasts(DEF_NUM_MSG_TO_LOAD);
     }
 
@@ -815,6 +815,7 @@ 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(const bool canRemove, QWidget* parent = nullptr);
+    explicit ChatLog(QWidget* parent = nullptr);
     virtual ~ChatLog();
 
     void insertChatlineAtBottom(ChatLine::Ptr l);
@@ -188,7 +188,6 @@ private:
 
     int numRemove{0};
     const int maxMessages{300};
-    bool canRemove;
 };
 
 #endif // CHATLOG_H

src/model/contact.h

@@ -37,8 +37,6 @@ 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

@@ -168,8 +168,3 @@ Status::Status Friend::getStatus() const
 {
     return friendStatus;
 }
-
-bool Friend::useHistory() const
-{
-    return true;
-}

src/model/friend.h

@@ -53,7 +53,6 @@ public:
 
     void setStatus(Status::Status s);
     Status::Status getStatus() const;
-    bool useHistory() const override final;
 
 signals:
     void nameChanged(const ToxPk& friendId, const QString& name);

src/model/group.cpp

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

src/model/group.h

@@ -61,8 +61,6 @@ 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

@@ -259,7 +259,7 @@ GenericChatForm::GenericChatForm(const Contact* contact, IChatLog& chatLog,
     headWidget = new ChatFormHeader();
     searchForm = new SearchForm();
     dateInfo = new QLabel(this);
-    chatWidget = new ChatLog(contact->useHistory(), this);
+    chatWidget = new ChatLog(this);
     chatWidget->setBusyNotification(ChatMessage::createBusyNotification());
     searchForm->hide();
     dateInfo->setAlignment(Qt::AlignHCenter);
@@ -698,6 +698,7 @@ 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);