change TimelineWindow to take a timelineSet rather than a Room

lib/timeline-window.js

@@ -19,6 +19,7 @@ limitations under the License.
 
 var q = require("q");
 var EventTimeline = require("./models/event-timeline");
+var EventTimelineSet = require("./models/event-timeline-set");
 
 /**
  * @private
@@ -56,7 +57,7 @@ var DEFAULT_PAGINATE_LOOP_LIMIT = 5;
  * @param {MatrixClient} client   MatrixClient to be used for context/pagination
  *   requests.
  *
- * @param {Room} room  The room to track
+ * @param {EventTimelineSet} timelineSet  The timelineSet to track
  *
  * @param {Object} [opts] Configuration options for this window
  *
@@ -66,10 +67,10 @@ var DEFAULT_PAGINATE_LOOP_LIMIT = 5;
  *
  * @constructor
  */
-function TimelineWindow(client, room, opts) {
+function TimelineWindow(client, timelineSet, opts) {
     opts = opts || {};
     this._client = client;
-    this._room = room;
+    this._timelineSet = timelineSet;
 
     // these will be TimelineIndex objects; they delineate the 'start' and
     // 'end' of the window.
@@ -113,7 +114,7 @@ TimelineWindow.prototype.load = function(initialEventId, initialWindowSize) {
     // TODO: ideally we'd spot getEventTimeline returning a resolved promise and
     // skip straight to the find-event loop.
     if (initialEventId) {
-        return this._client.getEventTimeline(this._room, initialEventId)
+        return this._client.getEventTimeline(this._timelineSet, initialEventId)
             .then(function(tl) {
                 // make sure that our window includes the event
                 for (var i = 0; i < tl.getEvents().length; i++) {
@@ -126,7 +127,7 @@ TimelineWindow.prototype.load = function(initialEventId, initialWindowSize) {
             });
     } else {
         // start with the most recent events
-        var tl = this._room.getLiveTimeline();
+        var tl = this._timelineSet.getLiveTimeline();
         initFields(tl, tl.getEvents().length);
         return q();
     }