animateInitialSelection property brakes neon-animated-pages with the new iron-selector 1.0.8

[vguillou]

animateInitialSelection property brakes neon-animated-pages with the new iron-selector 1.0.8.

Expected outcome

The first page is animated upon entry when the animateInitialSelection property is set to true on the neon-animated-pages.

Actual outcome

The neon-animated-pages crashes 💥 and stays blank, no page can be displayed anymore :

neon-animated-pages.html:122 Uncaught TypeError: Cannot read property 'getAnimationConfig' of undefined

Steps to reproduce

• Change the version of iron-selector int bower.json ("iron-selector": "PolymerElements/iron-selector#^1.0.8")
• Run bower install
• Pick a demo, add the animate-initial-selection attribute to the declared <neon-animated-pages>
• Run the demo and voilà.

Full stacktrace

Uncaught TypeError: Cannot read property 'getAnimationConfig' of undefinedPolymer._selectedChanged @ neon-animated-pages.html:122
Polymer.Base.extend._complexObserverEffect @ polymer.html:1630
Polymer.Bind._modelApi._effectEffects @ polymer.html:1461
Polymer.Bind._modelApi._propertySetter @ polymer.html:1445
Polymer.Bind._modelApi.__setProperty @ polymer.html:1454
Polymer.Base._addFeature._applyConfig @ polymer.html:1997
Polymer.Base._addFeature._afterClientsReady @ polymer.html:1991
Polymer.Base._addFeature._ready @ polymer-mini.html:70
Polymer.Base._addFeature._readyClients @ polymer-mini.html:78
Polymer.Base._addFeature._ready @ polymer-mini.html:66
Polymer.Base._addFeature._tryReady @ polymer-mini.html:56
Polymer.Base._addFeature._initFeatures @ polymer.html:3497
Polymer.render @ polymer.html:4688
Polymer.attached @ polymer.html:4672
Polymer.Base._addFeature._invokeBehavior @ polymer-micro.html:392
Polymer.Base._addFeature._doBehavior @ polymer-micro.html:387
(anonymous function) @ polymer-micro.html:196
Polymer.RenderStatus.whenReady @ polymer-micro.html:110
Polymer.Base.attachedCallback @ polymer-micro.html:194
Polymer.Base._addFeature.attachedCallback @ polymer-mini.html:100
Polymer.Base._addFeature._readySelf @ polymer-mini.html:88
Polymer._ensureReady @ polymer.html:4630
Polymer._markImportsReady @ polymer.html:4635
(anonymous function) @ polymer.html:4625
Polymer.RenderStatus._makeReady @ polymer-micro.html:118
(anonymous function) @ polymer-micro.html:124
(anonymous function) @ timeline.js:21

[cdata]

Thanks for the detailed report. I will take a look.

[fooloomanzoo]

I get the same bug in my previous issue #83:

http://jsbin.com/jahoni/edit?html,console,output

if you leave out animate-initial-selection, the animation runs:

http://jsbin.com/gudedo/edit?html,console,output

[ozasadnyy]

Any ideas how to make it working?

[MeinAccount]

Try downgrading iron-selector to 1.0.7. (Add "iron-selector": "PolymerElements/iron-selector#1.0.7" as dependency in your bower.json.)

[ozasadnyy]

@MeinAccount yeah, it helps. Thanks!