Only show room pack button, when you can actually create one

resources/qml/Root.qml

@@ -192,8 +192,9 @@ Page {
             userProfile.show();
         }
 
-        function onShowImagePackSettings(packlist) {
+        function onShowImagePackSettings(room, packlist) {
             var packSet = packSettingsComponent.createObject(timelineRoot, {
+                "room": room,
                 "packlist": packlist
             });
             packSet.show();

resources/qml/dialogs/ImagePackSettingsDialog.qml

@@ -12,6 +12,7 @@ import im.nheko 1.0
 ApplicationWindow {
     id: win
 
+    property Room room
     property ImagePackListModel packlist
     property int avatarSize: Math.ceil(fontMetrics.lineSpacing * 2.3)
     property SingleImagePackModel currentPack: packlist.packAt(currentPackIndex)
@@ -85,6 +86,7 @@ ApplicationWindow {
                             dialog.show();
                         }
                         width: packlistC.width
+                        visible: room.permissions.canChange(MtxEvent.ImagePackInRoom)
                         text: qsTr("New room pack")
                     }
 

src/timeline/TimelineViewManager.cpp

@@ -418,7 +418,8 @@ TimelineViewManager::openImageOverlay(QString mxcUrl, QString eventId)
 void
 TimelineViewManager::openImagePackSettings(QString roomid)
 {
-    emit showImagePackSettings(new ImagePackListModel(roomid.toStdString(), this));
+    auto room = rooms_->getRoomById(roomid).get();
+    emit showImagePackSettings(room, new ImagePackListModel(roomid.toStdString(), this));
 }
 
 void

src/timeline/TimelineViewManager.h

@@ -91,7 +91,7 @@ signals:
     void openRoomSettingsDialog(RoomSettings *settings);
     void openInviteUsersDialog(InviteesModel *invitees);
     void openProfile(UserProfile *profile);
-    void showImagePackSettings(ImagePackListModel *packlist);
+    void showImagePackSettings(TimelineModel *room, ImagePackListModel *packlist);
     void openLeaveRoomDialog(QString roomid);
 
 public slots: