add manager for popup entry points

scripts/external/entries/manager.js

@@ -0,0 +1,49 @@
+// Manage all entries. 
+
+import {read} from '../../secretariat.js';
+import Tabs from "/scripts/GUI/tabs.js";
+import MenuEntry from "./menu.js";
+import ManagedSidebar from "./sidebar.js";
+import IconIndicator from "./icons.js";
+import filters from '../../filters.js';
+
+export default class EntryManager {
+     constructor () {
+          this.instances = {};
+          this.instances.menu = new MenuEntry();
+          Tabs.addActionListener(`onActivated`, (data) => {this.check(data)});
+     }
+
+     async check(data) {
+          console.error(JSON.stringify(data));
+          ((data != null && (typeof data).includes(`obj`)) ? ((data.tab) ? data.tab.url : false) : false) 
+			? (!!await ((new filters).select(data.tab.url)))
+				? (this.enable())
+				: (this.disable())
+			: false;
+     }
+
+     /* 
+     Enable the entries. 
+     */
+     enable () {
+          this.instances.menu.enable();
+          IconIndicator.enable();
+
+          // Open the side panel, if supported. 
+		read([`settings`,`behavior`,`autoOpen`]).then((result) => {
+			result = (result == null) ? false : result;
+			if (result) {
+				new ManagedSidebar();
+			}
+		});
+     }
+
+     /* 
+     Disable the entries and the existing opened side panel. 
+     */
+     disable () {
+          this.instances.menu.disable();
+          IconIndicator.disable();
+     }
+}