Changes editibility type from NONE to FULL, and makes Save and Cancel
buttons work. Exposes a new bug, which is that changing the topic changes
the topic for the recipient row, rather than the message. See #2278.
Currently, message_edit.edit_message accesses elements of
message_edit_form.handlebars by a number of different means, and in a number
of different places. This commit is the first of two that standardizes it.
Previously we disabled fields in message_edit_form.handlebars that you
couldn't edit. This meant you could see the content of the field, but not
copy it. This commit marks those fields as readonly instead.
Previously,
* We displayed "(no topic)" in .message_edit_topic when there was no
topic;this commit changes that to a placeholder.
* We showed the .message_edit_topic_propagate dropdown when the user
cleared .message_edit_topic, despite the fact that one cannot save
or propagate an empty topic. This commit fixes the behavior.
Fixes#1273.
Previously, all of the callers of message_edit.save() would check if
it returned true, and if so, call message_edit.end(). This resulted
in various bugs in the past, so we switch to the much cleaner model of
just calling .end() inside .save().
message_edit_form.handlebars already has a message_edit_topic that
refers to the topic edit section of message editing, and this made
things very confusing.
Previously we showed an "Edit" item in the actions popover menu when a user
could edit the content or topic of a message, and nothing otherwise. We now
show "Edit", "Edit Topic", or "View Source" in the popover menu for every
message, depending on the editability of the message, and present an
appropriate version of message_edit_form when the menu item is clicked.
Finishes #1604 and #1761.
We compute the editability of messages in several places around the
frontend; standardize the definitions and store in
message_edit.get_editability. This commit should not change app behavior.
Adds "Topic editing only" along with the tooltip explanation to lower right
of message editing box when it's past the message content editing deadline.
This is controlled through the admin tab and a new field in the Realms table.
Notes:
* The admin tab setting takes a value in minutes, whereas the backend stores it
in seconds.
* This setting is unused when allow_message_editing is false.
* There is some generosity in how the limit is enforced. For instance, if the
user sees the hovering edit button, we ensure they have at least 5 seconds to
click it, and if the user gets to the message edit form, we ensure they have
at least 10 seconds to make the edit, by relaxing the limit.
* This commit also includes a countdown timer in the message edit form.
Resolves#903.