Permissions toggle controller (#1347)

* Move file, rename class

* Expose required permissions in an attribute

* Update selector

* Update attribute

* Fix global declaration order

1 files changed, 103 insertions, 0 deletions

diff --git a/ext/bg/js/settings/permissions-toggle-controller.js b/ext/bg/js/settings/permissions-toggle-controller.js
new file mode 100644
index 00000000..07db1cf8
--- /dev/null
+++ b/ext/bg/js/settings/permissions-toggle-controller.js
@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 2020-2021  Yomichan Authors
+ *
+ * This program 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 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+/* global
+ * ObjectPropertyAccessor
+ */
+
+class PermissionsToggleController {
+    constructor(settingsController) {
+        this._settingsController = settingsController;
+        this._toggles = null;
+    }
+
+    async prepare() {
+        this._toggles = document.querySelectorAll('.permissions-toggle');
+
+        for (const toggle of this._toggles) {
+            toggle.addEventListener('change', this._onPermissionsToggleChange.bind(this), false);
+        }
+        this._settingsController.on('optionsChanged', this._onOptionsChanged.bind(this));
+        this._settingsController.on('permissionsChanged', this._onPermissionsChanged.bind(this));
+
+        const options = await this._settingsController.getOptions();
+        this._onOptionsChanged({options});
+    }
+
+    // Private
+
+    _onOptionsChanged({options}) {
+        const accessor = new ObjectPropertyAccessor(options);
+        for (const toggle of this._toggles) {
+            const path = ObjectPropertyAccessor.getPathArray(toggle.dataset.permissionsSetting);
+            let value;
+            try {
+                value = accessor.get(path, path.length);
+            } catch (e) {
+                continue;
+            }
+            toggle.checked = !!value;
+        }
+        this._updateValidity();
+    }
+
+    async _onPermissionsToggleChange(e) {
+        const toggle = e.currentTarget;
+        let value = toggle.checked;
+
+        if (value) {
+            toggle.checked = false;
+            value = await this._settingsController.setPermissionsGranted(this._getRequiredPermissions(toggle), true);
+            toggle.checked = value;
+        }
+
+        this._setToggleValid(toggle, true);
+
+        await this._settingsController.setProfileSetting(toggle.dataset.permissionsSetting, value);
+    }
+
+    _onPermissionsChanged({permissions: {permissions}}) {
+        const permissionsSet = new Set(permissions);
+        for (const toggle of this._toggles) {
+            const valid = !toggle.checked || this._hasAll(permissionsSet, this._getRequiredPermissions(toggle));
+            this._setToggleValid(toggle, valid);
+        }
+    }
+
+    _setToggleValid(toggle, valid) {
+        const relative = toggle.closest('.settings-item');
+        if (relative === null) { return; }
+        relative.dataset.invalid = `${!valid}`;
+    }
+
+    async _updateValidity() {
+        const permissions = await this._settingsController.getAllPermissions();
+        this._onPermissionsChanged({permissions});
+    }
+
+    _hasAll(set, values) {
+        for (const value of values) {
+            if (!set.has(value)) { return false; }
+        }
+        return true;
+    }
+
+    _getRequiredPermissions(toggle) {
+        const requiredPermissions = toggle.dataset.requiredPermissions;
+        return (typeof requiredPermissions === 'string' && requiredPermissions.length > 0 ? requiredPermissions.split(' ') : []);
+    }
+}