import { get } from 'discourse-common/lib/raw-handlebars'; export function htmlHelper(fn) { return Ember.Helper.helper(function(...args) { args = (args.length > 1) ? args[0].concat({ hash: args[args.length-1] }) : args; return new Handlebars.SafeString(fn.apply(this, args) || ''); }); } const _helpers = {}; export function registerHelper(name, fn) { _helpers[name] = Ember.Helper.helper(fn); } export function findHelper(name) { return _helpers[name] || _helpers[name.dasherize()]; } export function registerHelpers(registry) { Object.keys(_helpers).forEach(name => { registry.register(`helper:${name}`, _helpers[name], { singleton: false }); }); } function resolveParams(ctx, options) { let params = {}; const hash = options.hash; if (hash) { if (options.hashTypes) { Object.keys(hash).forEach(function(k) { const type = options.hashTypes[k]; if (type === "STRING" || type === "StringLiteral") { params[k] = hash[k]; } else if (type === "ID" || type === "PathExpression") { params[k] = get(ctx, hash[k], options); } }); } else { params = hash; } } return params; } export function registerUnbound(name, fn) { const func = function(property, options) { if (options.types && (options.types[0] === "ID" || options.types[0] === "PathExpression")) { property = get(this, property, options); } return fn.call(this, property, resolveParams(this, options)); }; _helpers[name] = Ember.Helper.extend({ compute: (params, args) => fn(params[0], args) }); Handlebars.registerHelper(name, func); }