notifications: Notify when sent message is scrolled down in view.

A common source of confusion for new users is sending a message when
you're scrolled up in the message feed; in this case, it's nice to
communicate to the user why the message is not in view.

Fixes #10792.

Restructured by tabbott to replace overly complex logic for getting
the position of the new message with a `message_list.get_row()` call.
This commit is contained in:
Vaibhav 2018-11-30 19:36:43 +05:30 committed by Tim Abbott
parent 022e926d64
commit 372cb20f9e
1 changed files with 26 additions and 0 deletions

View File

@ -560,6 +560,23 @@ function get_message_header(message) {
return "PM with " + message.display_reply_to;
}
exports.get_echo_not_in_view_reason = function (message) {
// Check the offset of last message in the current message list;
// if it's placement is such that it's below the compose box, we
// notify the user.
var row = current_msg_list.get_row(message.local_id);
var echo_offset_y = row.offset().top;
var compose_box_y = $('#compose-container').offset().top;
if (echo_offset_y > 0 && echo_offset_y < compose_box_y) {
// If it lies between top and above the compose box
// Message can be said to be visible
return;
}
return "Sent! Scroll down to view your message.";
};
exports.get_local_notify_mix_reason = function (message) {
var row = current_msg_list.get_row(message.id);
if (row.length > 0) {
@ -604,6 +621,15 @@ exports.notify_local_mixes = function (messages) {
var reason = exports.get_local_notify_mix_reason(message);
if (!reason) {
// Check if local_echo is not in view
reason = exports.get_echo_not_in_view_reason(message);
if (reason) {
exports.notify_above_composebox(reason, "", null, "");
setTimeout(function () {
$('#out-of-view-notification').hide();
}, 3000);
}
// This is more than normal, just continue on.
return;
}