zulip/static/js/templates.js

86 lines
2.6 KiB
JavaScript

var templates = (function () {
var exports = {};
// Below, we register Zulip-specific extensions to the handlebars API.
//
// IMPORTANT: When adding a new handlebars helper, update the
// knownHelpers array in the webpack config so that webpack knows your
// helper is registered at runtime and don't try to require them when
// bundling.
// We don't want to wait for DOM ready to register the Handlebars helpers
// below. There's no need to, as they do not access the DOM.
// Furthermore, waiting for DOM ready would introduce race conditions with
// other DOM-ready callbacks that attempt to render templates.
Handlebars.registerHelper('plural', function (condition, one, other) {
return condition === 1 ? one : other;
});
Handlebars.registerHelper({
eq: function (a, b) { return a === b; },
and: function () {
// last argument is Handlebars options
if (arguments.length < 2) {
return true;
}
var i;
for (i = 0; i < arguments.length - 2; i += 1) {
if (!arguments[i] || Handlebars.Utils.isEmpty(arguments[i])) {
return arguments[i];
}
}
return arguments[i];
},
or: function () {
// last argument is Handlebars options
if (arguments.length < 2) {
return false;
}
var i;
for (i = 0; i < arguments.length - 2; i += 1) {
if (arguments[i] && !Handlebars.Utils.isEmpty(arguments[i])) {
return arguments[i];
}
}
return arguments[i];
},
not: function (a) { return !a || Handlebars.Utils.isEmpty(a); },
});
Handlebars.registerHelper('t', function (i18n_key) {
// Marks a string for translation.
// Example usage:
// {{t "some English text"}}
var result = i18n.t(i18n_key);
return new Handlebars.SafeString(result);
});
Handlebars.registerHelper('tr', function (context, options) {
// Marks a block for translation.
// Example usage 1:
// {{#tr context}}
// <p>some English text</p>
// {{/tr}}
//
// Example usage 2:
// {{#tr context}}
// <p>This __variable__ will get value from context</p>
// {{/tr}}
//
// Notes:
// 1. `context` is very important. It can be `this` or an
// object or key of the current context.
// 2. Use `__` instead of `{{` and `}}` to declare expressions
var result = i18n.t(options.fn(context), context);
return new Handlebars.SafeString(result);
});
return exports;
}());
if (typeof module !== 'undefined') {
module.exports = templates;
}
window.templates = templates;