tslint-microsoft-contrib/reactA11yRoleRule.js

"use strict";
var __extends = (this && this.__extends) || (function () {
    var extendStatics = Object.setPrototypeOf ||
        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
        function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
    return function (d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
var ts = require("typescript");
var Lint = require("tslint");
var JsxAttribute_1 = require("./utils/JsxAttribute");
var ROLE_SCHEMA = require('./utils/attributes/roleSchema.json');
var ROLES = ROLE_SCHEMA.roles;
var VALID_ROLES = Object.keys(ROLES).filter(function (role) { return ROLES[role].isAbstract === false; });
function getFailureStringUndefinedRole() {
    return '\'role\' attribute empty. Either select a role from https://www.w3.org/TR/wai-aria/roles#role_definitions, ' +
        'or simply remove this attribute';
}
exports.getFailureStringUndefinedRole = getFailureStringUndefinedRole;
function getFailureStringInvalidRole(invalidRoleName) {
    return "Invalid role attribute value '" + invalidRoleName + "', elements with ARIA roles must use a valid, non-abstract ARIA role. A reference to role definitions can be found at https://www.w3.org/TR/wai-aria/roles#role_definitions.";
}
exports.getFailureStringInvalidRole = getFailureStringInvalidRole;
var Rule = (function (_super) {
    __extends(Rule, _super);
    function Rule() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    Rule.prototype.apply = function (sourceFile) {
        return sourceFile.languageVariant === ts.LanguageVariant.JSX
            ? this.applyWithWalker(new A11yRoleRuleWalker(sourceFile, this.getOptions()))
            : [];
    };
    Rule.metadata = {
        ruleName: 'react-a11y-role',
        type: 'maintainability',
        description: 'Elements with aria roles must use a **valid**, **non-abstract** aria role.',
        options: null,
        optionsDescription: '',
        typescriptOnly: true,
        issueClass: 'Non-SDL',
        issueType: 'Warning',
        severity: 'Important',
        level: 'Opportunity for Excellence',
        group: 'Accessibility'
    };
    return Rule;
}(Lint.Rules.AbstractRule));
exports.Rule = Rule;
var A11yRoleRuleWalker = (function (_super) {
    __extends(A11yRoleRuleWalker, _super);
    function A11yRoleRuleWalker() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    A11yRoleRuleWalker.prototype.visitJsxAttribute = function (node) {
        var name = JsxAttribute_1.getPropName(node);
        if (!name || name.toLowerCase() !== 'role') {
            return;
        }
        var roleValue = JsxAttribute_1.getStringLiteral(node);
        if (roleValue) {
            var normalizedValues = roleValue.toLowerCase().split(' ');
            if (normalizedValues.some(function (value) { return value && VALID_ROLES.indexOf(value) === -1; })) {
                this.addFailureAt(node.getStart(), node.getWidth(), getFailureStringInvalidRole(roleValue));
            }
        }
        else if (roleValue === '' || JsxAttribute_1.isEmpty(node)) {
            this.addFailureAt(node.getStart(), node.getWidth(), getFailureStringUndefinedRole());
        }
        _super.prototype.visitJsxAttribute.call(this, node);
    };
    return A11yRoleRuleWalker;
}(Lint.RuleWalker));
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