Rewrite VerticalCollection to a GlimmerComponent

addon/-private/data-view/elements/occluded-content.js

@@ -1,11 +1,13 @@
-import { set } from '@ember/object';
 import { DEBUG } from '@glimmer/env';
+import { tracked } from '@glimmer/tracking';
 
 import document from '../../utils/document-shim';
 
 let OC_IDENTITY = 0;
 
 export default class OccludedContent {
+  @tracked element;
+
   constructor(tagName) {
     this.id = `OC-${OC_IDENTITY++}`;
     this.isOccludedContent = true;
@@ -72,6 +74,6 @@ export default class OccludedContent {
   }
 
   destroy() {
-    set(this, 'element', null);
+    this.element = null;
   }
 }

addon/-private/data-view/elements/virtual-component.js

@@ -1,4 +1,5 @@
 import { set } from '@ember/object';
+import { tracked } from '@glimmer/tracking';
 import { assert } from '@ember/debug';
 import { DEBUG } from '@glimmer/env';
 
@@ -7,6 +8,9 @@ import document from '../../utils/document-shim';
 let VC_IDENTITY = 0;
 
 export default class VirtualComponent {
+  @tracked upperBound;
+  @tracked lowerBound;
+
   constructor(content = null, index = null) {
     this.id = `VC-${VC_IDENTITY++}`;
 
@@ -79,8 +83,8 @@ export default class VirtualComponent {
   }
 
   destroy() {
-    set(this, 'upperBound', null);
-    set(this, 'lowerBound', null);
+    this.upperBound = null;
+    this.lowerBound = null;
     set(this, 'content', null);
     set(this, 'index', null);
   }

addon/-private/data-view/radar/dynamic-radar.js

@@ -1,21 +1,23 @@
 import { DEBUG } from '@glimmer/env';
+import { tracked } from '@glimmer/tracking';
 
 import Radar from './radar';
 import SkipList from '../skip-list';
 import roundTo from '../utils/round-to';
 import getScaledClientRect from '../../utils/element/get-scaled-client-rect';
 
 export default class DynamicRadar extends Radar {
-  constructor(parentToken, options) {
-    super(parentToken, options);
+  @tracked _firstItemIndex=0;
+  @tracked _lastItemIndex=0;
+
+  @tracked _totalBefore=0;
+  @tracked _totalAfter=0;
 
-    this._firstItemIndex = 0;
-    this._lastItemIndex = 0;
+  @tracked _minHeight = Infinity;
 
-    this._totalBefore = 0;
-    this._totalAfter = 0;
+  constructor(parentToken, options) {
+    super(parentToken, options);
 
-    this._minHeight = Infinity;
 
     this._nextIncrementalRender = null;
 

addon/-private/data-view/radar/radar.js

@@ -687,7 +687,7 @@ export default class Radar {
     this._prevFirstItemIndex += numPrepended;
     this._prevLastItemIndex += numPrepended;
 
-    this.orderedComponents.forEach((c) => set(c, 'index', get(c, 'index') + numPrepended));
+    this.orderedComponents.forEach((c) => set(c, 'index', c.index + numPrepended));
 
     this._firstReached = false;