Chrome+Polymer weekly sync notes, 1/19/2016

[Dan Beam]

Polymer in Chrome UI

• Downloads

• Tenatively launching in Chrome 49.0.2621.0

• Spreadsheet of numbers on effect of vulcanization

• Test platforms didn’t have RAM constraints

• Still need to determine whether to keep vulcanized versions in Chrome

• For CrOS and other specific platforms, there’s a benefit; possible that we’ll want to use different version on different platforms/devices

• History

• iron-list has issues with items larger than the screen size

• Can’t tab to next/previous element in iron-list when the items are so large

• Breaks rendering, scrolling, and a11y

• Get around this in Downloads by styling smaller items like start/end of larger section

• Has cost, though; every item needs to have a date header that mostly isn’t necessary

• AI: tjsavage -- check for existing iron-list bugs, file if none exist

• egarciad is working on iron-list issues that affect history here:
  https://github.com/PolymerElements/iron-list/issues/173

• AI: dbeam -- meet with egarciad, kschaaf, tsergeant about iron-list issues?

• Settings

• iron-dropdown locks scrolling with overflow: hidden while open

• not working on new settings page because shadow DOM

• Github issue is filed

• AI: dbeam -- CC tjsavage on Github issue for iron-dropdown overflow

• https://github.com/PolymerElements/iron-dropdown/issues/27

• https://github.com/PolymerElements/iron-dropdown/pull/50

• cdata is addressing here: https://github.com/PolymerElements/iron-dropdown/pull/49

Polymer updates

• Thinking a lot about "progressive web apps"
  
• Big, complex apps, and those that use service workers
  
• Thinking about what micro/mini could do by themselves
  
• Blessed solution for routing, lazy loading
  

AI: dbeam -- set up meeting on dealing with "virtual" DOM and a11y/usability

• Investigate other virtual DOM solutions (i.e. React)
  
• Address (possibly together)
• "Find in page"
• screen readers / tab order without rendered items
• Need to involve Polymer, a11y, blink, and UI authors(?)
  
• potential peeps
• blink: esprehn, dglazkov
• a11y: aboxhall, dmazzoni
• polymer: egarciad, dfreedm
• chrome: dbeam, ?