Update libqmatrixclient && add a progress bar.

src/spectralroom.cpp

@@ -17,6 +17,8 @@ SpectralRoom::SpectralRoom(Connection* connection, QString roomId,
           &SpectralRoom::countChanged);
   connect(this, &SpectralRoom::highlightCountChanged, this,
           &SpectralRoom::countChanged);
+  connect(this, &Room::addedMessages, this,
+          [=] { setBusy(false); });
 }
 
 void SpectralRoom::chooseAndUploadFile() {
@@ -175,3 +177,8 @@ void SpectralRoom::saveViewport(int topIndex, int bottomIndex) {
   setFirstDisplayedEvent(maxTimelineIndex() - topIndex);
   setLastDisplayedEvent(maxTimelineIndex() - bottomIndex);
 }
+
+void SpectralRoom::getPreviousContent(int limit) {
+  setBusy(true);
+  Room::getPreviousContent(limit);
+}

src/spectralroom.h

@@ -15,6 +15,8 @@ class SpectralRoom : public Room {
   Q_PROPERTY(QString usersTyping READ getUsersTyping NOTIFY typingChanged)
   Q_PROPERTY(QString cachedInput READ cachedInput WRITE setCachedInput NOTIFY
                  cachedInputChanged)
+  Q_PROPERTY(bool busy READ busy NOTIFY busyChanged)
+
  public:
   explicit SpectralRoom(Connection* connection, QString roomId,
                         JoinState joinState = {});
@@ -29,6 +31,14 @@ class SpectralRoom : public Room {
     }
   }
 
+  bool busy() { return m_busy; }
+  void setBusy(bool value) {
+    if (m_busy != value) {
+      m_busy = value;
+      emit busyChanged();
+    }
+  }
+
   bool hasUsersTyping();
   QString getUsersTyping();
 
@@ -42,10 +52,14 @@ class SpectralRoom : public Room {
   Q_INVOKABLE int savedBottomVisibleIndex() const;
   Q_INVOKABLE void saveViewport(int topIndex, int bottomIndex);
 
+  Q_INVOKABLE void getPreviousContent(int limit = 10);
+
  private:
   QString m_cachedInput;
   QSet<const QMatrixClient::RoomEvent*> highlights;
 
+  bool m_busy;
+
   QString getMIME(const QUrl& fileUrl) const;
   void postFile(const QUrl& localFile, const QUrl& mxcUrl);
 
@@ -59,6 +73,7 @@ class SpectralRoom : public Room {
 
  signals:
   void cachedInputChanged();
+  void busyChanged();
 
  public slots:
   void chooseAndUploadFile();