import $ from "jquery"; import * as compose_pm_pill from "./compose_pm_pill"; let message_type = false; // 'stream', 'private', or false-y export function set_message_type(msg_type) { message_type = msg_type; } export function get_message_type() { return message_type; } export function recipient_has_topics() { return message_type !== "stream"; } export function composing() { // This is very similar to get_message_type(), but it returns // a boolean. return Boolean(message_type); } function get_or_set(fieldname, keep_leading_whitespace) { // We can't hoist the assignment of '$elem' out of this lambda, // because the DOM element might not exist yet when get_or_set // is called. return function (newval) { const $elem = $(`#${CSS.escape(fieldname)}`); const oldval = $elem.val(); if (newval !== undefined) { $elem.val(newval); } return keep_leading_whitespace ? oldval.trimEnd() : oldval.trim(); }; } // TODO: Break out setters and getter into their own functions. export const stream_name = get_or_set("stream_message_recipient_stream"); export const topic = get_or_set("stream_message_recipient_topic"); // We can't trim leading whitespace in `compose_textarea` because // of the indented syntax for multi-line code blocks. export const message_content = get_or_set("compose-textarea", true); export function focus_in_empty_compose() { // A user trying to press arrow keys in an empty compose is mostly // likely trying to navigate messages. This helper function // decides whether the compose box is "empty" for this purpose. if (!composing() || message_content() !== "") { return false; } const focused_element_id = document.activeElement.id; if (focused_element_id === "compose-textarea") { // Focus will be in the compose textarea after sending a // message; this is the most common situation. return true; } // If the current focus is in one of the recipient inputs, we need // to check whether the input is empty, to avoid accidentally // overriding the browser feature where the Up/Down arrow keys jump // you to the start/end of a non-empty text input. // // Check whether the current input element is empty for each input type. switch (focused_element_id) { case "private_message_recipient": return private_message_recipient().length === 0; case "stream_message_recipient_topic": case "stream_message_recipient_stream": return document.activeElement.value === ""; } return false; } export function private_message_recipient(value) { if (typeof value === "string") { compose_pm_pill.set_from_emails(value); return undefined; } return compose_pm_pill.get_emails(); } export function has_message_content() { return message_content() !== ""; } export function has_full_recipient() { if (message_type === "stream") { return stream_name() !== "" && topic() !== ""; } return private_message_recipient() !== ""; }