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insert_new_message: Rewrite using all_rendered_message_lists.

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This replaces one of the our larger remaining blocks of code with
explicit logic for message_lists.home with logic that should correct
if we support maintaining a different set of rendered message lists.

This should have identical behavior to the previous implementation
given that all_rendered_message_lists is either just
message_lists.home or that plus the current narrowed message list;
can_apply_locally() is always true for the home message list, and the
list === message_lists.current check is equivalent to the more complex
narrow_state.active() check.
This commit is contained in:
Tim Abbott
2023-02-23 11:29:00 -08:00
parent f165e59273
commit 872a336598
2 changed files with 37 additions and 24 deletions
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48
web/src/message_events.js
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@@ -122,33 +122,35 @@ export function insert_new_messages(messages, sent_by_this_client) {
// other lists, so we always update this
message_util.add_new_messages_data(messages, all_messages_data);
let render_info;
if (narrow_state.active()) {
// We do this NOW even though the home view is not active,
// because we want the home view to load fast later.
message_util.add_new_messages(messages, message_lists.home);
if (narrow_state.filter().can_apply_locally()) {
render_info = message_util.add_new_messages(messages, message_lists.current);
} else {
// if we cannot apply locally, we have to wait for this callback to happen to notify
maybe_add_narrowed_messages(
messages,
message_lists.current,
message_util.add_new_messages,
);
let need_user_to_scroll = false;
for (const list of message_lists.all_rendered_message_lists()) {
if (!list.data.filter.can_apply_locally()) {
// If we cannot locally calculate whether the new messages
// match the message list, we ask the server whether the
// new messages match the narrow, and use that to
// determine which new messages to add to the current
// message list (or display a notification).
maybe_add_narrowed_messages(messages, list, message_util.add_new_messages);
continue;
}
// Update the message list's rendering for the newly arrived messages.
const render_info = message_util.add_new_messages(messages, list);
// The render_info.need_user_to_scroll calculation, which
// looks at message feed scroll positions to see whether the
// newly arrived message will be visible, is only valid if
// this message list is the currently visible message list.
const is_currently_visible = list === message_lists.current;
if (is_currently_visible && render_info && render_info.need_user_to_scroll) {
need_user_to_scroll = true;
}
} else {
// we're in the home view, so update its list
render_info = message_util.add_new_messages(messages, message_lists.home);
}
// sent_by_this_client will be true if ANY of the messages
// were sent by this client; notifications.notify_local_mixes
// will filter out any not sent by us.
if (sent_by_this_client) {
const need_user_to_scroll = render_info && render_info.need_user_to_scroll;
// sent_by_this_client will be true if ANY of the messages
// were sent by this client; notifications.notify_local_mixes
// will filter out any not sent by us.
notifications.notify_local_mixes(messages, need_user_to_scroll);
}