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