Provide initial state

Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>

1 files changed, 56 insertions, 0 deletions

diff --git a/lib/public/IInitialStateService.php b/lib/public/IInitialStateService.php
new file mode 100644
index 00000000000..ff6144e0d45
--- /dev/null
+++ b/lib/public/IInitialStateService.php
@@ -0,0 +1,56 @@
+<?php
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2019, Roeland Jago Douma <roeland@famdouma.nl>
+ *
+ * @author Roeland Jago Douma <roeland@famdouma.nl>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCP;
+
+/**
+ * @since 16.0.0
+ */
+interface IInitialStateService {
+	/**
+	 * Allows an app to provide its initial state to the template system.
+	 * Use this if you know your initial state sill be used for example if
+	 * you are in the render function of you controller.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @param string $appName
+	 * @param bool|int|float|string|array|\JsonSerializable $data
+	 */
+	public function provideInitialState(string $appName, $data);
+
+	/**
+	 * Allows an app to provide its initial state via a lazy method.
+	 * This will call the closure when the template is being generated.
+	 * Use this if your app is injected into pages. Since then the render method
+	 * is not called explicitly. But we do not want to load the state on webdav
+	 * requests for example.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @param string $appName
+	 * @param \Closure $closure Has to return an object that implements JsonSerializable
+	 */
+	public function provideLazyInitialState(string $appName, \Closure $closure);
+}