{"action":"created","issue":{"url":"https://api.github.com/repos/phetsims/beers-law-lab/issues/126","labels_url":"https://api.github.com/repos/phetsims/beers-law-lab/issues/126/labels{/name}","comments_url":"https://api.github.com/repos/phetsims/beers-law-lab/issues/126/comments","events_url":"https://api.github.com/repos/phetsims/beers-law-lab/issues/126/events","html_url":"https://github.com/phetsims/beers-law-lab/issues/126","id":123322284,"number":126,"title":"use HSlider in ConcentrationSlider","user":{"login":"pixelzoom","id":3046552,"avatar_url":"https://avatars.githubusercontent.com/u/3046552?v=3","gravatar_id":"","url":"https://api.github.com/users/pixelzoom","html_url":"https://github.com/pixelzoom","followers_url":"https://api.github.com/users/pixelzoom/followers","following_url":"https://api.github.com/users/pixelzoom/following{/other_user}","gists_url":"https://api.github.com/users/pixelzoom/gists{/gist_id}","starred_url":"https://api.github.com/users/pixelzoom/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/pixelzoom/subscriptions","organizations_url":"https://api.github.com/users/pixelzoom/orgs","repos_url":"https://api.github.com/users/pixelzoom/repos","events_url":"https://api.github.com/users/pixelzoom/events{/privacy}","received_events_url":"https://api.github.com/users/pixelzoom/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/phetsims/beers-law-lab/labels/phet-io","name":"phet-io","color":"fad8c7"}],"state":"open","locked":false,"assignee":{"login":"samreid","id":679486,"avatar_url":"https://avatars.githubusercontent.com/u/679486?v=3","gravatar_id":"","url":"https://api.github.com/users/samreid","html_url":"https://github.com/samreid","followers_url":"https://api.github.com/users/samreid/followers","following_url":"https://api.github.com/users/samreid/following{/other_user}","gists_url":"https://api.github.com/users/samreid/gists{/gist_id}","starred_url":"https://api.github.com/users/samreid/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/samreid/subscriptions","organizations_url":"https://api.github.com/users/samreid/orgs","repos_url":"https://api.github.com/users/samreid/repos","events_url":"https://api.github.com/users/samreid/events{/privacy}","received_events_url":"https://api.github.com/users/samreid/received_events","type":"User","site_admin":false},"milestone":null,"comments":12,"created_at":"2015-12-21T17:30:28Z","updated_at":"2015-12-22T22:16:33Z","closed_at":null,"body":"In https://github.com/phetsims/together/issues/250#issuecomment-166326831, @samreid said this about instrumenting ConcentrationSlider for PhET-iO:\r\n\r\n> The ConcentrationSlider was particularly expensive to instrument because:\r\n> \r\n> • it is a custom component (doesn't use common code slider)\r\n> • it can be dragged by the track or by the knob, each of which requires 3 pairs of emitters (for a total of 12 emitters)\r\n> • it switches input listeners dynamically (this last issue minor compared to previous items)\r\n\r\nConcentrationSlider likely pre-dates HSlider, and I don't see anything that wouldn't be a desirable feature in HSlider.   So I think that it would be preferable to use HSlider in ConcentrationSlider, enhancing HSlider where necessary."},"comment":{"url":"https://api.github.com/repos/phetsims/beers-law-lab/issues/comments/166746946","html_url":"https://github.com/phetsims/beers-law-lab/issues/126#issuecomment-166746946","issue_url":"https://api.github.com/repos/phetsims/beers-law-lab/issues/126","id":166746946,"user":{"login":"pixelzoom","id":3046552,"avatar_url":"https://avatars.githubusercontent.com/u/3046552?v=3","gravatar_id":"","url":"https://api.github.com/users/pixelzoom","html_url":"https://github.com/pixelzoom","followers_url":"https://api.github.com/users/pixelzoom/followers","following_url":"https://api.github.com/users/pixelzoom/following{/other_user}","gists_url":"https://api.github.com/users/pixelzoom/gists{/gist_id}","starred_url":"https://api.github.com/users/pixelzoom/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/pixelzoom/subscriptions","organizations_url":"https://api.github.com/users/pixelzoom/orgs","repos_url":"https://api.github.com/users/pixelzoom/repos","events_url":"https://api.github.com/users/pixelzoom/events{/privacy}","received_events_url":"https://api.github.com/users/pixelzoom/received_events","type":"User","site_admin":false},"created_at":"2015-12-22T22:16:33Z","updated_at":"2015-12-22T22:16:33Z","body":"NumberControl would require an alternative layout option. It's layout currently looks like this:\r\n\r\n![screenshot_97](https://cloud.githubusercontent.com/assets/3046552/11967294/ed190776-a8be-11e5-81d4-f2aa8daaeafd.png)\r\n\r\nConcentrationControl looks like this:\r\n\r\n![screenshot_98](https://cloud.githubusercontent.com/assets/3046552/11967301/f4b175a4-a8be-11e5-8a66-e224e26ac8e0.png)\r\n\r\n "}}