zulip/web/src/settings_user_topics.js

import $ from "jquery";

import render_user_topic_ui_row from "../templates/user_topic_ui_row.hbs";

import * as ListWidget from "./list_widget";
import * as scroll_util from "./scroll_util";
import * as settings_config from "./settings_config";
import * as user_topics from "./user_topics";

export let loaded = false;

export function populate_list() {
    const all_user_topics = [];
    const visibility_policies = Object.values(user_topics.all_visibility_policies);
    for (const visibility_policy of visibility_policies) {
        /* For visibility_policy=INHERIT, 'get_user_topics_for_visibility_policy' returns
        an empty list as we only maintain the record of topics having visibility_policy
        other than INHERIT; INHERIT is used to remove topics from the record. */
        const user_topics_list =
            user_topics.get_user_topics_for_visibility_policy(visibility_policy);
        all_user_topics.push(...user_topics_list);
    }
    const $user_topics_table = $("#user_topics_table");
    const $search_input = $("#user_topics_search");

    ListWidget.create($user_topics_table, all_user_topics, {
        name: "user-topics-list",
        modifier(user_topic) {
            const context = {
                user_topic,
                user_topic_visibility_policy_values:
                    settings_config.user_topic_visibility_policy_values,
            };
            return render_user_topic_ui_row(context);
        },
        filter: {
            $element: $search_input,
            predicate(item, value) {
                return item.topic.toLocaleLowerCase().includes(value);
            },
            onupdate() {
                scroll_util.reset_scrollbar(
                    $user_topics_table.closest(".progressive-table-wrapper"),
                );
            },
        },
        init_sort: ["numeric", "date_updated"],
        initially_descending_sort: true,
        $parent_container: $("#user-topic-settings"),
        $simplebar_container: $("#user-topic-settings .progressive-table-wrapper"),
    });
}

export function set_up() {
    loaded = true;

    $("body").on("change", ".settings_user_topic_visibility_policy", function (e) {
        const $row = $(this).closest("tr");
        const stream_id = Number.parseInt($row.attr("data-stream-id"), 10);
        const topic = $row.attr("data-topic");
        const visibility_policy = this.value;

        e.stopPropagation();

        user_topics.set_user_topic_visibility_policy(stream_id, topic, visibility_policy);
    });

    populate_list();
}

export function reset() {
    loaded = false;
}