tree f1aa6ccd8f4cda3d81f53b4362190ceed1908218
parent b5c1b61c73b826eb66ea0cd4662ee05efb4af44c
author Greg Spencer <gspencergoog@users.noreply.github.com> 1562802500 -0700
committer GitHub <noreply@github.com> 1562802500 -0700
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Add anchors to samples (#35906)

This adds an "anchor button" to each of the samples so that the user can link to individual samples instead of having to link to just the page. Clicking on the anchor button jumps to the anchor, as well as copying the anchor URL to the clipboard.

There is some oddness in the implementation: because dartdoc uses a <base> tag, the href for the link can't just be "#id", it has to calculate the URL from the current window href. I do that in the onmouseenter and onclick because onload doesn't get triggered for <a> tags (and onmouseenter doesn't get triggered for mobile platforms), but I still want the href to be updated before someone right-clicks it to copy the URL.