When navigating away from the page, the field receives the 'focusout'
event – but stops to be present in the DOM.
Thus we need to check that the DOM element is actually present.
When calling `redirect_to` in a Rails controller that emits Javascript,
Rails will emit `Turbolinks.replace(…)` commands. And for this,
Turbolinks needs to be globally available.
Otherwise some champs are created before the previous one has been
saved, and React complains that several champs have the same
`champ-undefined` key.
(Plus it made the tests flaky and unreliable.)
Before the editor attempted to create a default champ as soon as the
list became empty.
This created many race conditions, which made the tests flaky.
Remove this behavior, and add an empty label instead.
When a file is being uploaded asynchronosely, hidden input fields
are created by DirectUpload to contain the result of the upload.
However, before the upload finishes, the value of these inputs is not
meaningful. Moreover, it makes the ActiveRecord signature invalid – thus
preventing drafts from being saved.
Exclude these fields from the auto-save.
Older browsers implemented a different default value for `window.fetch`
credentials: it was omitted unless explicitely set.
So we force the value for these older browsers:
- Firefox 39-60
- Chrome 42-67
- Safari 10.1-11.1.2
See https://github.com/github/fetch#sending-cookies
Before, when the "Add new champ" button was clicked, the new champ
was inserted after the **first** fully visible champ.
That was most of the time unexpected. The correct behavior would be to
insert the new champ after the **last** fully visible champ.
That's what this commit does. Now the "Add new champ" behavior feels
much less confusing.
Under some circumstances (like dispatching events just before a page
navigation), IE 11 events will be dispatched twice by the browser: once
with the payload, and a second time without.
To prevent these errors, ignore the events if the payload is missing.
During integration tests, we don't want to load the tiles from OSM:
- It hits OSM servers during every test run;
- It it slow (Capybara waits for the tiles to be loaded to proceed);
- It makes test time out when tiles cannot be loaded for some reason.
Fix#3913
