ng2-json-editor/src/shared/services/empty-value.service.js

Angular2 component for editing large json documents

/*
 * This file is part of ng2-json-editor.
 * Copyright (C) 2016 CERN.
 *
 * ng2-json-editor is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * ng2-json-editor is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with ng2-json-editor; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
 * In applying this license, CERN does not
 * waive the privileges and immunities granted to it by virtue of its status
 * as an Intergovernmental Organization or submit itself to any jurisdiction.
*/
import { Injectable } from '@angular/core';
import { fromJS } from 'immutable';
var EmptyValueService = (function () {
    function EmptyValueService() {
    }
    EmptyValueService.prototype.generateEmptyValue = function (schema) {
        var emptyValue = this.generateEmptyValueRecursively(schema);
        if (typeof emptyValue === 'object') {
            return fromJS(emptyValue);
        }
        else {
            return emptyValue;
        }
    };
    EmptyValueService.prototype.generateEmptyValueRecursively = function (schema) {
        var _this = this;
        if (schema.default) {
            return schema.default;
        }
        if (schema.type === 'object') {
            var emptyObject_1 = {};
            Object.keys(schema.properties)
                .filter(function (prop) {
                var required = schema.required || [];
                var alwaysShow = schema.alwaysShow || [];
                return required.indexOf(prop) > -1 || alwaysShow.indexOf(prop) > -1;
            }).forEach(function (prop) {
                var propSchema = schema.properties[prop];
                emptyObject_1[prop] = _this.generateEmptyValueRecursively(propSchema);
            });
            return emptyObject_1;
        }
        if (schema.type === 'array') {
            var emptyArray = [];
            var arrayElementSchema = schema.items;
            if (schema.componentType !== 'complex-list') {
                emptyArray.push(this.generateEmptyValueRecursively(arrayElementSchema));
            }
            return emptyArray;
        }
        return EmptyValueService.defaultValueLookup[schema.type];
    };
    return EmptyValueService;
}());
export { EmptyValueService };
EmptyValueService.defaultValueLookup = {
    'string': '',
    'boolean': false
};
EmptyValueService.decorators = [
    { type: Injectable },
];
/** @nocollapse */
EmptyValueService.ctorParameters = function () { return []; };
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