Initial support for notification settings

Signed-off-by: Travis Ralston <travpc@gmail.com>

src/settings/handlers/AccountSettingsHandler.js

@@ -0,0 +1,62 @@
+/*
+Copyright 2017 Travis Ralston
+
+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.
+*/
+
+import SettingsHandler from "./SettingsHandler";
+import MatrixClientPeg from '../../MatrixClientPeg';
+
+/**
+ * Gets and sets settings at the "account" level for the current user.
+ * This handler does not make use of the roomId parameter.
+ */
+export default class AccountSettingHandler extends SettingsHandler {
+    getValue(settingName, roomId) {
+        // Special case URL previews
+        if (settingName === "urlPreviewsEnabled") {
+            const content = this._getSettings("org.matrix.preview_urls");
+            return !content['disable'];
+        }
+
+        return this._getSettings()[settingName];
+    }
+
+    setValue(settingName, roomId, newValue) {
+        // Special case URL previews
+        if (settingName === "urlPreviewsEnabled") {
+            const content = this._getSettings("org.matrix.preview_urls");
+            content['disable'] = !newValue;
+            return MatrixClientPeg.get().setAccountData("org.matrix.preview_urls", content);
+        }
+
+        const content = this._getSettings();
+        content[settingName] = newValue;
+        return MatrixClientPeg.get().setAccountData("im.vector.web.settings", content);
+    }
+
+    canSetValue(settingName, roomId) {
+        return true; // It's their account, so they should be able to
+    }
+
+    isSupported() {
+        const cli = MatrixClientPeg.get();
+        return cli !== undefined && cli !== null;
+    }
+
+    _getSettings(eventType = "im.vector.web.settings") {
+        const event = MatrixClientPeg.get().getAccountData(eventType);
+        if (!event || !event.getContent()) return {};
+        return event.getContent();
+    }
+}