snapshot of https://github.com/espocrm/espocrm.git (master, 2026-09-18; blobs > 131072B omitted)

client/src/session-storage.js

@@ -0,0 +1,132 @@
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2026 EspoCRM, Inc.
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+/** @module session-storage */
+
+/**
+ * A session storage. Cleared when a page session ends.
+ */
+class SessionStorage {
+
+    /** @private */
+    storageObject = sessionStorage
+
+    /**
+     * Get a value.
+     *
+     * @param {string} name A name.
+     * @returns {*} Null if not set.
+     */
+    get(name) {
+        let stored;
+
+        try {
+            stored = this.storageObject.getItem(name);
+        }
+        catch (error) {
+            console.error(error);
+
+            return null;
+        }
+
+        if (stored) {
+            let result = stored;
+
+            if (stored.length > 9 && stored.substring(0, 9) === '__JSON__:') {
+                const jsonString = stored.slice(9);
+
+                try {
+                    result = JSON.parse(jsonString);
+                }
+                catch (error) {
+                    result = stored;
+                }
+            }
+
+            return result;
+        }
+
+        return null;
+    }
+
+    /**
+     * Set (store) a value.
+     *
+     * @param {string} name A name.
+     * @param {*} value A value.
+     */
+    set(name, value) {
+        if (value === null) {
+            this.clear(name);
+
+            return;
+        }
+
+        if (
+            value instanceof Object ||
+            Array.isArray(value) ||
+            value === true ||
+            value === false ||
+            typeof value === 'number'
+        ) {
+            value = '__JSON__:' + JSON.stringify(value);
+        }
+
+        try {
+            this.storageObject.setItem(name, value);
+        }
+        catch (error) {
+            console.error(error);
+        }
+    }
+
+    /**
+     * Has a value.
+     *
+     * @param {string} name A name.
+     * @returns {boolean}
+     */
+    has(name) {
+        return this.storageObject.getItem(name) !== null;
+    }
+
+    /**
+     * Clear a value.
+     *
+     * @param {string} name A name.
+     */
+    clear(name) {
+        for (const i in this.storageObject) {
+            if (i === name) {
+                delete this.storageObject[i];
+            }
+        }
+    }
+}
+
+export default SessionStorage;