With perfectScrollbar, we needed to call a function from JavaScript to
enable a scrollbar on a new element, but simplebar has a much simpler
default API one can do by using data-simplebar attributes in the HTML.
So we can delete all the scrollbar creation/deletion code.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
This removes the old compose emoji picker in its entirety, changing
the few callbacks needed to launch the reactions-style emoji picker
instead and hook it up properly.
Callbacks for reactions and composing messages are distinguished by
selecting for, respectively, the .reaction and .composition classes.
Fixes#4122.
- Expand a box full of emojis into the
compose window for users to graphically select emojis.
- Append an emoji to the end of the message when a user
clicks the emoji in the emoji box.
- Trap the escape key to always close the emoji box
before closing anything else if the box is open.
- Fixes: #147.