159787 2016-07-14 14:52:48 -0700 Web Inspector: Uncaught Exception: undefined is not an object (evaluating 'this._selectorSection.update') 2016-08-08 10:44:37 -0700 1 1 1 Unclassified WebKit Web Inspector WebKit Nightly Build All All RESOLVED WONTFIX http://n12v.com/ InRadar P2 Normal --- 159745 1 nvasilyev mattbaker bburg joepeck mattbaker nvasilyev timothy webkit-bug-importer oldest_to_newest 1211159 0 nvasilyev 2016-07-14 14:52:48 -0700 ------- Inspected URL: http://n12v.com/ Loading completed: true Frontend User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_5) AppleWebKit/602.1.41+ (KHTML, like Gecko) Uncaught Exceptions: - undefined is not an object (evaluating 'this._selectorSection.update') (at VisualStyleDetailsPanel.js:64:34) refresh @ VisualStyleDetailsPanel.js:64:34 _refreshPreservingScrollPosition @ StyleDetailsPanel.js:143:21 nodeStylesRefreshed @ StyleDetailsPanel.js:114:50 dispatch @ Object.js:162:30 dispatchEventToListeners @ Object.js:169:17 fetchedComputedStyle @ DOMNodeStyles.js:228:42 fetchedComputedStyle @ [native code] _dispatchResponseToCallback @ InspectorBackend.js:311:27 _dispatchResponse @ InspectorBackend.js:281:45 dispatch @ InspectorBackend.js:157:35 dispatchNextQueuedMessageFromBackend @ MessageDispatcher.js:42:34 Additional Details: cause --> An uncaught exception was thrown while dispatching response callback for command CSS.getComputedStyleForNode. ------- * STEPS TO REPRODUCE 1. Open http://n12v.com 2. Select Elements tab 3. Select "Styles — Visual" 1211160 1 webkit-bug-importer 2016-07-14 14:53:28 -0700 <rdar://problem/27358715> 1211163 2 nvasilyev 2016-07-14 14:54:29 -0700 Must be a regression. I can't reproduce it in Safari TP 8. 1211164 3 nvasilyev 2016-07-14 14:56:57 -0700 Selecting "Styles — Computed" also causes an uncaught exception: Uncaught Exceptions: - undefined is not an object (evaluating 'this._propertiesTextEditor.style = this.nodeStyles.computedStyle') (at ComputedStyleDetailsPanel.js:130:35) refresh @ ComputedStyleDetailsPanel.js:130:35 _refreshPreservingScrollPosition @ StyleDetailsPanel.js:143:21 nodeStylesRefreshed @ StyleDetailsPanel.js:114:50 dispatch @ Object.js:162:30 dispatchEventToListeners @ Object.js:169:17 fetchedComputedStyle @ DOMNodeStyles.js:228:42 fetchedComputedStyle @ [native code] _dispatchResponseToCallback @ InspectorBackend.js:311:27 _dispatchResponse @ InspectorBackend.js:281:45 dispatch @ InspectorBackend.js:157:35 dispatchNextQueuedMessageFromBackend @ MessageDispatcher.js:42:34 Additional Details: cause --> An uncaught exception was thrown while dispatching response callback for command CSS.getComputedStyleForNode. 1211169 4 nvasilyev 2016-07-14 15:06:32 -0700 This manifests itself by not showing the selectors list (Style Rules section in the visual styles sidebar) on first open. 1211171 5 nvasilyev 2016-07-14 15:14:02 -0700 For the first exception: WebInspector.VisualStyleDetailsPanel.prototype.refresh gets called before WebInspector.VisualStyleDetailsPanel.prototype.initialLayout. refresh(significantChange) { if (significantChange) this._selectorSection.update(this._nodeStyles); else this._updateSections(); super.refresh(); } // Protected initialLayout() { // Selector Section this._selectorSection = new WebInspector.VisualStyleSelectorSection(this); ... 1211176 6 nvasilyev 2016-07-14 15:23:47 -0700 I was able to reproduce it 5 times in a row, but I can't reproduce it anymore :/ 1211201 7 mattbaker 2016-07-14 16:20:03 -0700 Steps to Reproduce: 1. Select Elements tab 2. If details sidebar is expanded, collapse and reload Inspector. 3. Select a different node in the DOM tree => TypeError: undefined is not an object (evaluating 'this._classListContainer.hidden') 1211205 8 mattbaker 2016-07-14 16:22:40 -0700 This is fixed by https://bugs.webkit.org/show_bug.cgi?id=159745. 1211219 9 nvasilyev 2016-07-14 16:31:19 -0700 (In reply to comment #7) > Steps to Reproduce: > 1. Select Elements tab > 2. If details sidebar is expanded, collapse and reload Inspector. > 3. Select a different node in the DOM tree > => TypeError: undefined is not an object (evaluating > 'this._classListContainer.hidden') I'm getting this exception: - TypeError: undefined is not an object (evaluating 'this._classListContainer.hidden') (at CSSStyleDetailsSidebarPanel.js:72:38) refresh @ CSSStyleDetailsSidebarPanel.js:72:38 needsRefresh @ DetailsSidebarPanel.js:68:21 domNode @ DOMDetailsSidebarPanel.js:81:26 inspect @ DOMDetailsSidebarPanel.js:58:13 showDetailsSidebarPanels @ ContentBrowserTabContentView.js:145:37 dispatch @ Object.js:162:30 dispatchEventToListeners @ Object.js:169:17 _dispatchCurrentRepresentedObjectsDidChangeEvent @ ContentBrowser.js:437:38 performWork @ Utilities.js:1255:43 1218524 10 timothy 2016-08-08 10:44:37 -0700 Is this fixed or not?