mirror of https://github.com/zulip/zulip.git
107 lines
3.1 KiB
JavaScript
107 lines
3.1 KiB
JavaScript
import Handlebars from "handlebars/runtime";
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import {default_html_elements, intl} from "./i18n";
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import * as util from "./util";
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// Below, we register Zulip-specific extensions to the Handlebars API.
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//
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// IMPORTANT: When adding a new Handlebars helper, update the
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// knownHelpers array in the webpack config so that webpack knows your
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// helper is registered at runtime and don't try to require them when
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// bundling.
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// We don't want to wait for DOM ready to register the Handlebars helpers
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// below. There's no need to, as they do not access the DOM.
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// Furthermore, waiting for DOM ready would introduce race conditions with
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// other DOM-ready callbacks that attempt to render templates.
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Handlebars.registerHelper({
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eq(a, b) {
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return a === b;
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},
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and(...args) {
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args.pop(); // Handlebars options
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if (args.length === 0) {
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return true;
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}
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const last = args.pop();
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for (const arg of args) {
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if (!arg || Handlebars.Utils.isEmpty(arg)) {
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return arg;
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}
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}
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return last;
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},
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or(...args) {
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args.pop(); // Handlebars options
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if (args.length === 0) {
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return false;
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}
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const last = args.pop();
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for (const arg of args) {
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if (arg && !Handlebars.Utils.isEmpty(arg)) {
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return arg;
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}
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}
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return last;
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},
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not(a) {
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return !a || Handlebars.Utils.isEmpty(a);
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},
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});
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Handlebars.registerHelper("t", (message) => {
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// Marks a string for translation.
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// Example usage:
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// {{t "some English text"}}
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const descriptor = {id: message, defaultMessage: message};
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return intl.formatMessage(descriptor);
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});
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Handlebars.registerHelper("tr", function (options) {
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// Marks a block for translation.
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// Example usage 1:
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// {{#tr}}
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// <p>some English text</p>
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// {{/tr}}
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//
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// Example usage 2:
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// {{#tr}}
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// <p>This {variable} will get value from the current context</p>
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// {{/tr}}
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//
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// Note: use `{` and `}` instead of `{{` and `}}` to declare
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// variables.
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const message = options
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.fn(this)
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.trim()
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.split("\n")
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.map((s) => s.trim())
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.join(" ");
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const descriptor = {id: message, defaultMessage: message};
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const result = intl.formatMessage(descriptor, {
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...default_html_elements,
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...Object.fromEntries(
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Object.entries(options.fn.partials ?? {}).map(([name, value]) => [
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name,
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(s) => value(this, {data: {"partial-block": () => s.join("")}}),
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]),
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),
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...Object.fromEntries(
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Object.entries(this ?? {}).map(([key, value]) => [
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key,
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Handlebars.Utils.escapeExpression(value),
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]),
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),
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});
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return new Handlebars.SafeString(result);
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});
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Handlebars.registerHelper(
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"rendered_markdown",
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(content) => new Handlebars.SafeString(util.clean_user_content_links(content)),
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);
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Handlebars.registerHelper("numberFormat", (number) => number.toLocaleString());
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