- re-order element to be the same as in notebook,
- rename events correctly.
- Add event on savign to show that save is in progress, that get
dismissed on file save
Closes#7569
The approach in #7517 didn't work on Safari
(as in the entire page was invisible).
This is the same mechanism used to size the CodeMirror div on the edit page, and should work more reliably.
When a users uses the rename dialog in the text editor, we call
_set_mode_for_model on the returned model. The expected model to be
returned from rename has no value for mimetype, which causes us to pass
`undefined` to `CodeMirror.findModeByMIME`, which returns `undefined`
back. We then try access an attribute of the (undefined) return value,
causing an error.
This now properly checks whether the `mimetype` attribute is set on the
input model.
Prior to this change, setting a document's initial content in the text
editor created a history entry, which meant that hitting CTRL-Z
repeatedly could clear the entire document. This change clears document
history after loading so that repeated CTRL-Z applications return the
document to its state at load time.
Thomas Kluyver
Min RK
Bussonnier Matthias
Jonathan Frederic
Scott Sanderson
Nicholas Bollweg (Nick)