zulip/static/js/stream_muting.js

import * as message_scroll from "./message_scroll";
import * as message_viewport from "./message_viewport";

export function update_is_muted(sub, value) {
    sub.is_muted = value;

    setTimeout(() => {
        let msg_offset;
        let saved_ypos;
        // Save our current scroll position
        if (overlays.is_active()) {
            saved_ypos = message_viewport.scrollTop();
        } else if (
            home_msg_list === current_msg_list &&
            current_msg_list.selected_row().offset() !== null
        ) {
            msg_offset = current_msg_list.selected_row().offset().top;
        }

        home_msg_list.clear({clear_selected_id: false});

        // Recreate the home_msg_list with the newly filtered message_list.all
        message_util.add_old_messages(message_list.all.all_messages(), home_msg_list);

        // Ensure we're still at the same scroll position
        if (overlays.is_active()) {
            message_viewport.scrollTop(saved_ypos);
        } else if (home_msg_list === current_msg_list) {
            // We pass use_closest to handle the case where the
            // currently selected message is being hidden from the
            // home view
            home_msg_list.select_id(home_msg_list.selected_id(), {
                use_closest: true,
                empty_ok: true,
            });
            if (current_msg_list.selected_id() !== -1) {
                current_msg_list.view.set_message_offset(msg_offset);
            }
        }

        // In case we added messages to what's visible in the home
        // view, we need to re-scroll to make sure the pointer is
        // still visible. We don't want the auto-scroll handler to
        // move our pointer to the old scroll location before we have
        // a chance to update it.
        navigate.plan_scroll_to_selected();
        message_scroll.suppress_selection_update_on_next_scroll();

        if (!home_msg_list.empty()) {
            message_util.do_unread_count_updates(home_msg_list.all_messages());
        }
    }, 0);

    stream_list.set_in_home_view(sub.stream_id, !sub.is_muted);

    const is_muted_checkbox = $(
        `.subscription_settings[data-stream-id='${CSS.escape(
            sub.stream_id,
        )}'] #sub_is_muted_setting .sub_setting_control`,
    );
    is_muted_checkbox.prop("checked", value);
}