glance-selector/lib/extensions/target-is-leaf-node.js

Glance selector library

"use strict";

Object.defineProperty(exports, "__esModule", {
    value: true
});

var _log = require("../log");

var _log2 = _interopRequireDefault(_log);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

exports.default = {
    properties: {
        "target-is-leaf-node": {
            filter: function visible(_ref, resultHandler) {
                var target = _ref.target,
                    elements = _ref.elements;

                _log2.default.debug("Filtering for leaf node targets");

                if (target.type != "target") return resultHandler(null, elements);

                return browserExecute(function (elements, handler) {
                    try {
                        var filteredElements = elements.filter(function (e) {
                            return !e.childNodes || e.childNodes.length == 0 || [].slice.call(e.childNodes).every(function (c) {
                                return c.nodeType == Node.TEXT_NODE;
                            });
                        });

                        if (filteredElements.length == 0) {
                            return handler(null, elements);
                        }

                        return handler(null, filteredElements);
                    } catch (err) {
                        return handler(err, []);
                    }
                }, elements, resultHandler);
            }
        }
    }
};