Merge pull request #2299 from flarum/as/poststream_improvements

[Frontend Rewrite] PostStream Improvements

js/src/forum/states/PostStreamState.js

@@ -37,6 +37,18 @@ class PostStreamState {
      */
     this.description = '';
 
+    /**
+     * When the page is scrolled, goToIndex is called, or the page is loaded,
+     * various listeners result in the scrubber being updated with a new
+     * position and values. However, if goToNumber is called, the scrubber
+     * will not be updated. Accordingly, we add logic to the scrubber's
+     * onupdate to update itself, but only when needed, as indicated by this
+     * property.
+     *
+     * @type {Boolean}
+     */
+    this.forceUpdateScrubber = false;
+
     this.show(includedPosts);
   }
 
@@ -92,7 +104,7 @@ class PostStreamState {
     this.loadPromise = this.loadNearNumber(number);
 
     this.targetPost = { number };
-    this.noAnimationScroll = noAnimation;
+    this.animateScroll = !noAnimation;
     this.number = number;
 
     // In this case, the redraw is only called after the response has been loaded
@@ -116,7 +128,7 @@ class PostStreamState {
     this.loadPromise = this.loadNearIndex(index);
 
     this.targetPost = { index };
-    this.noAnimationScroll = noAnimation;
+    this.animateScroll = !noAnimation;
     this.index = index;
 
     m.redraw();