common: add Navigation component

js/src/common/compat.ts

@@ -43,7 +43,7 @@ import SplitDropdown from './components/SplitDropdown';
 import RequestErrorModal from './components/RequestErrorModal';
 import FieldSet from './components/FieldSet';
 // import Select from './components/Select';
-// import Navigation from './components/Navigation';
+import Navigation from './components/Navigation';
 import Alert from './components/Alert';
 import LinkButton from './components/LinkButton';
 import Checkbox from './components/Checkbox';
@@ -107,7 +107,7 @@ export default {
     'components/RequestErrorModal': RequestErrorModal,
     'components/FieldSet': FieldSet,
     // 'components/Select': Select,
-    // 'components/Navigation': Navigation,
+    'components/Navigation': Navigation,
     'components/Alert': Alert,
     'components/LinkButton': LinkButton,
     'components/Checkbox': Checkbox,

js/src/common/components/Navigation.tsx

@@ -0,0 +1,113 @@
+import Component, { ComponentProps } from '../Component';
+import Button from './Button';
+import LinkButton from './LinkButton';
+
+import History from '../../forum/utils/History';
+
+export interface NavigationProps extends ComponentProps {
+    /**
+     * The name of a class to set on the root element.
+     */
+    className?: string;
+
+    /**
+     * Whether or not to show a button to toggle the app's drawer if
+     * there is no more history to pop.
+     */
+    drawer?: boolean;
+}
+
+/**
+ * The `Navigation` component displays a set of navigation buttons. Typically
+ * this is just a back button which pops the app's History. If the user is on
+ * the root page and there is no history to pop, then in some instances it may
+ * show a button that toggles the app's drawer.
+ *
+ * If the app has a pane, it will also include a 'pin' button which toggles the
+ * pinned state of the pane.
+ */
+export default class Navigation extends Component<NavigationProps> {
+    className?: string;
+    drawer: boolean;
+
+    constructor(options: { className?: string; drawer?: boolean } = {}) {
+        super();
+
+        this.className = options.className;
+        this.drawer = !!options.drawer;
+    }
+
+    view() {
+        const { history, pane }: { history: History; pane: any } = app;
+
+        return (
+            <div
+                className={'Navigation ButtonGroup ' + (this.className || '')}
+                onmouseenter={pane && pane.show.bind(pane)}
+                onmouseleave={pane && pane.onmouseleave.bind(pane)}
+            >
+                {history.canGoBack() ? [this.getBackButton(), this.getPaneButton()] : this.getDrawerButton()}
+            </div>
+        );
+    }
+
+    /**
+     * Get the back button.
+     */
+    protected getBackButton() {
+        const { history } = app;
+        const previous = history.getPrevious() || {};
+
+        return (
+            <LinkButton
+                className="Button Navigation-back Button--icon"
+                href={history.backUrl()}
+                icon="fas fa-chevron-left"
+                title={previous.title}
+                onclick={(e) => {
+                    if (e.shiftKey || e.ctrlKey || e.metaKey || e.which === 2) return;
+                    e.preventDefault();
+                    history.back();
+                }}
+            />
+        );
+    }
+
+    /**
+     * Get the pane pinned toggle button.
+     */
+    protected getPaneButton() {
+        const { pane } = app;
+
+        if (!pane || !pane.active) return '';
+
+        return (
+            <Button
+                className={'Button Button--icon Navigation-pin' + (pane.pinned ? ' active' : '')}
+                onclick={pane.togglePinned.bind(pane)}
+                icon="fas fa-thumbtack"
+            />
+        );
+    }
+
+    /**
+     * Get the drawer toggle button.
+     */
+    protected getDrawerButton() {
+        if (!this.drawer) return '';
+
+        const { drawer } = app;
+        const user = app.session.user;
+
+        return (
+            <Button
+                className={'Button Button--icon Navigation-drawer' + (user && user.newNotificationCount() ? ' new' : '')}
+                onclick={(e) => {
+                    e.stopPropagation();
+                    drawer.show();
+                }}
+                icon="fas fa-bars"
+            />
+        );
+    }
+}

js/src/common/utils/Drawer.ts

@@ -35,10 +35,8 @@ export default class Drawer {
 
     /**
      * Show the drawer.
-     *
-     * @public
      */
-    show() {
+    public show() {
         $('#app').addClass('drawerOpen');
 
         this.$backdrop = $('<div/>')
@@ -46,6 +44,6 @@ export default class Drawer {
             .appendTo('body')
             .click(() => this.hide());
 
-        setTimeout(() => this.$backdrop.addClass('in'));
+        requestAnimationFrame(() => this.$backdrop!.addClass('in'));
     }
 }

js/src/forum/Forum.ts

@@ -1,6 +1,7 @@
 import Application from '../common/Application';
 import History from './utils/History';
 
+import Navigation from '../common/components/Navigation';
 import HeaderPrimary from './components/HeaderPrimary';
 import HeaderSecondary from './components/HeaderSecondary';
 import Page from './components/Page';
@@ -57,8 +58,8 @@ export default class Forum extends Application {
         this.routes[defaultAction].path = '/';
         this.history.push(defaultAction, this.translator.transText('core.forum.header.back_to_index_tooltip'), '/');
 
-        // m.mount(document.getElementById('app-navigation'), Navigation.component({className: 'App-backControl', drawer: true}));
+        m.mount(document.getElementById('app-navigation'), new Navigation({ className: 'App-backControl', drawer: true }));
-        // m.mount(document.getElementById('header-navigation'), Navigation.component());
+        m.mount(document.getElementById('header-navigation'), new Navigation());
         m.mount(document.getElementById('header-primary'), new HeaderPrimary());
         m.mount(document.getElementById('header-secondary'), new HeaderSecondary());