Update libqmatrixclient && add a progress bar.

include/libqmatrixclient

@@ -1 +1 @@
-Subproject commit f5651c74ddddd8c66b3b42b471fbe2ff278c0d9a
+Subproject commit 5f2b4caa9b9cd63e1652d6550ceebecdb52df424

qml/form/RoomForm.qml

@@ -100,6 +100,14 @@ Item {
             }
         }
 
+        ProgressBar {
+            Layout.fillWidth: true
+            z: 10
+
+            visible: currentRoom && currentRoom.busy
+            indeterminate: true
+        }
+
         ListView {
             Layout.fillWidth: true
             Layout.fillHeight: true
@@ -122,11 +130,9 @@ Item {
             onContentYChanged: {
                 // Check whether we're about to bump into the ceiling in 2 seconds
                 var curVelocity = verticalVelocity // Snapshot the current speed
-                if(curVelocity < 0 && contentY + curVelocity*2 < originY)
+                if(curVelocity < 0 && contentY + curVelocity * 2 < originY)
                 {
-                    // Request the amount of messages enough to scroll at this
-                    // rate for 3 more seconds
-                    currentRoom.getPreviousContent(20);
+                    currentRoom.getPreviousContent(50);
                 }
             }
 
@@ -159,8 +165,8 @@ Item {
                             console.log("Scrolling to position", lastScrollPosition)
                             messageListView.currentIndex = lastScrollPosition
                         }
-                        if (messageListView.contentY < messageListView.originY + 10)
-                            currentRoom.getPreviousContent(100)
+                        if (messageListView.contentY < messageListView.originY + 10 || currentRoom.timelineSize === 0)
+                            currentRoom.getPreviousContent(50)
                     }
                     console.log("Model timeline reset")
                 }

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();