zulip/static/js/ui.js

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JavaScript
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import $ from "jquery";
import SimpleBar from "simplebar";
import {$t} from "./i18n";
import * as message_list from "./message_list";
import * as message_lists from "./message_lists";
// What, if anything, obscures the home tab?
export function replace_emoji_with_text(element) {
element.find(".emoji").replaceWith(function () {
if ($(this).is("img")) {
return $(this).attr("alt");
}
return $(this).text();
});
}
export function get_content_element(element_selector) {
const element = element_selector.expectOne()[0];
const sb = SimpleBar.instances.get(element);
if (sb) {
return $(sb.getContentElement());
}
return element_selector;
}
export function get_scroll_element(element_selector) {
const element = element_selector.expectOne()[0];
const sb = SimpleBar.instances.get(element);
if (sb) {
return $(sb.getScrollElement());
} else if ("simplebar" in element.dataset) {
// The SimpleBar mutation observer hasnt processed this element yet.
// Create the SimpleBar early in case we need to add event listeners.
return $(new SimpleBar(element).getScrollElement());
}
return element_selector;
}
export function reset_scrollbar(element_selector) {
const element = element_selector.expectOne()[0];
const sb = SimpleBar.instances.get(element);
if (sb) {
sb.getScrollElement().scrollTop = 0;
} else {
element.scrollTop = 0;
}
}
function update_message_in_all_views(message_id, callback) {
for (const list of [message_lists.home, message_list.narrowed]) {
if (list === undefined) {
continue;
}
const row = list.get_row(message_id);
if (row === undefined) {
// The row may not exist, e.g. if you do an action on a message in
// a narrowed view
continue;
}
callback(row);
}
}
export function update_starred_view(message_id, new_value) {
const starred = new_value;
// Avoid a full re-render, but update the star in each message
// table in which it is visible.
update_message_in_all_views(message_id, (row) => {
const elt = row.find(".star");
const star_container = row.find(".star_container");
if (starred) {
elt.addClass("fa-star").removeClass("fa-star-o");
star_container.removeClass("empty-star");
} else {
elt.removeClass("fa-star").addClass("fa-star-o");
star_container.addClass("empty-star");
}
const title_state = starred ? $t({defaultMessage: "Unstar"}) : $t({defaultMessage: "Star"});
star_container.attr(
"data-tippy-content",
$t(
{defaultMessage: "{starred_status} this message (Ctrl + s)"},
{starred_status: title_state},
),
);
});
}
export function show_message_failed(message_id, failed_msg) {
// Failed to send message, so display inline retry/cancel
update_message_in_all_views(message_id, (row) => {
const failed_div = row.find(".message_failed");
failed_div.toggleClass("notvisible", false);
failed_div.find(".failed_text").attr("title", failed_msg);
});
}
export function show_failed_message_success(message_id) {
// Previously failed message succeeded
update_message_in_all_views(message_id, (row) => {
row.find(".message_failed").toggleClass("notvisible", true);
});
}
// Save the compose content cursor position and restore when we
// shift-tab back in (see hotkey.js).
let saved_compose_cursor = 0;
export function set_compose_textarea_handlers() {
$("#compose-textarea").on("blur", function () {
saved_compose_cursor = $(this).caret();
});
// on the end of the modified-message fade in, remove the fade-in-message class.
const animationEnd = "webkitAnimationEnd oanimationend msAnimationEnd animationend";
$("body").on(animationEnd, ".fade-in-message", function () {
$(this).removeClass("fade-in-message");
});
}
export function restore_compose_cursor() {
$("#compose-textarea").trigger("focus").caret(saved_compose_cursor);
}
export function initialize() {
set_compose_textarea_handlers();
}