chat: fix issues with the initial "New Chat" (#2330)

* select the existing new chat if there already is one when "New Chat" is clicked
* scroll to the new chat when "New Chat" is clicked
* fix the "New Chat" being scrolled past the top of the chat list

Signed-off-by: Jared Van Bortel <jared@nomic.ai>

gpt4all-chat/chatlistmodel.cpp

@@ -15,18 +15,19 @@ ChatListModel *ChatListModel::globalInstance()
 }
 
 ChatListModel::ChatListModel()
-    : QAbstractListModel(nullptr)
+    : QAbstractListModel(nullptr) {}
+
+void ChatListModel::loadChats()
 {
     addChat();
 
     ChatsRestoreThread *thread = new ChatsRestoreThread;
-    connect(thread, &ChatsRestoreThread::chatRestored, this, &ChatListModel::restoreChat);
-    connect(thread, &ChatsRestoreThread::finished, this, &ChatListModel::chatsRestoredFinished);
+    connect(thread, &ChatsRestoreThread::chatRestored, this, &ChatListModel::restoreChat, Qt::QueuedConnection);
+    connect(thread, &ChatsRestoreThread::finished, this, &ChatListModel::chatsRestoredFinished, Qt::QueuedConnection);
     connect(thread, &ChatsRestoreThread::finished, thread, &QObject::deleteLater);
     thread->start();
 
     connect(MySettings::globalInstance(), &MySettings::serverChatChanged, this, &ChatListModel::handleServerEnabledChanged);
-
 }
 
 void ChatListModel::removeChatFile(Chat *chat) const

gpt4all-chat/chatlistmodel.h

@@ -81,11 +81,15 @@ public:
     bool shouldSaveChatGPTChats() const;
     void setShouldSaveChatGPTChats(bool b);
 
+    Q_INVOKABLE void loadChats();
+
     Q_INVOKABLE void addChat()
     {
-        // Don't add a new chat if we already have one
-        if (m_newChat)
+        // Select the existing new chat if we already have one
+        if (m_newChat) {
+            setCurrentChat(m_newChat);
             return;
+        }
 
         // Create a new chat pointer and connect it to determine when it is populated
         m_newChat = new Chat(this);
@@ -114,20 +118,6 @@ public:
         emit countChanged();
     }
 
-    void setNewChat(Chat* chat)
-    {
-        // Don't add a new chat if we already have one
-        if (m_newChat)
-            return;
-
-        m_newChat = chat;
-        connect(m_newChat->chatModel(), &ChatModel::countChanged,
-            this, &ChatListModel::newChatCountChanged);
-        connect(m_newChat, &Chat::nameChanged,
-            this, &ChatListModel::nameChanged);
-        setCurrentChat(m_newChat);
-    }
-
     Q_INVOKABLE void removeChat(Chat* chat)
     {
         Q_ASSERT(chat != m_serverChat);

gpt4all-chat/qml/ChatDrawer.qml

@@ -39,7 +39,8 @@ Rectangle {
             text: qsTr("\uFF0B New chat")
             Accessible.description: qsTr("Create a new chat")
             onClicked: {
-                ChatListModel.addChat();
+                ChatListModel.addChat()
+                conversationList.positionViewAtIndex(0, ListView.Beginning)
                 Network.trackEvent("new_chat", {"number_of_chats": ChatListModel.count})
             }
         }
@@ -60,6 +61,9 @@ Rectangle {
                 anchors.fill: parent
                 anchors.rightMargin: 10
                 model: ChatListModel
+
+                Component.onCompleted: ChatListModel.loadChats()
+
                 ScrollBar.vertical: ScrollBar {
                     parent: conversationList.parent
                     anchors.top: conversationList.top