Current Dev State

static/js/ketcher2/script/ui/utils.js

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+/****************************************************************************
+ * Copyright 2017 EPAM Systems
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ ***************************************************************************/
+
+/* local storage */
+const storage = {
+	warningMessage: "Your changes will be lost after the tab closing. See Help (Note 2).",
+	isAvailable: function () {
+		try {
+			return localStorage;
+		} catch (ex) {
+			return false;
+		}
+	},
+	getItem: function (key) {
+		let item = null;
+		try {
+			item = JSON.parse(localStorage.getItem(key));
+		} catch (ex) {
+			console.info('LocalStorage:', ex.name);
+		}
+		return item;
+	},
+	setItem: function (key, data) {
+		let isSet = null;
+		try {
+			localStorage.setItem(key, JSON.stringify(data));
+			isSet = true;
+		} catch (ex) {
+			console.info('LocalStorage:', ex.name);
+			isSet = false;
+		}
+		return isSet;
+	}
+};
+
+/* schema utils */
+function constant(schema, prop) {
+	let desc = schema.properties[prop];
+	return desc.constant || desc.enum[0]; // see https://git.io/v6hyP
+}
+
+function mapOf(schema, prop) {
+	console.assert(schema.oneOf);
+	return schema.oneOf.reduce((res, desc) => {
+		res[constant(desc, prop)] = desc;
+		return res;
+	}, {});
+}
+
+function selectListOf(schema, prop) {
+	let desc = schema.properties && schema.properties[prop];
+	if (desc)
+		return desc.enum.map((value, i) => {
+			let title = desc.enumNames && desc.enumNames[i];
+			return title ? { title, value } : value;
+		});
+	return schema.oneOf.map(desc => (
+		!desc.title ? constant(desc, prop) : {
+			title: desc.title,
+			value: constant(desc, prop)
+		}
+	));
+}
+
+module.exports = {
+	mapOf: mapOf,
+	selectListOf: selectListOf,
+	storage: storage
+};