Simple Routing Panel in the "Other" tab

client-app/src/desktop/AppModel.ts

@@ -179,7 +179,12 @@ export class AppModel extends BaseAppModel {
                             {name: 'pinPad', path: '/pinPad'},
                             {name: 'placeholder', path: '/placeholder'},
                             {name: 'popups', path: '/popups'},
-                            {name: 'timestamp', path: '/timestamp'}
+                            {name: 'timestamp', path: '/timestamp'},
+                            {
+                                name: 'simpleRouting',
+                                path: '/simpleRouting',
+                                children: [{name: 'recordId', path: '/:recordId'}]
+                            }
                         ]
                     },
                     {

client-app/src/desktop/tabs/other/OtherTab.ts

@@ -17,6 +17,7 @@ import {pinPadPanel} from './PinPadPanel';
 import {placeholderPanel} from './PlaceholderPanel';
 import {popupsPanel} from './PopupsPanel';
 import {relativeTimestampPanel} from './relativetimestamp/RelativeTimestampPanel';
+import {simpleRoutingPanel} from './routing/SimpleRoutingPanel';
 
 export const otherTab = hoistCmp.factory(() =>
     tabContainer({
@@ -44,7 +45,8 @@ export const otherTab = hoistCmp.factory(() =>
                 {id: 'pinPad', title: 'PIN Pad', content: pinPadPanel},
                 {id: 'placeholder', title: 'Placeholder', content: placeholderPanel},
                 {id: 'popups', content: popupsPanel},
-                {id: 'timestamp', content: relativeTimestampPanel}
+                {id: 'timestamp', content: relativeTimestampPanel},
+                {id: 'simpleRouting', content: simpleRoutingPanel}
             ]
         },
         className: 'toolbox-tab'

client-app/src/desktop/tabs/other/routing/SimpleRoutingPanel.tsx

@@ -0,0 +1,110 @@
+import {grid, GridModel} from '@xh/hoist/cmp/grid';
+import {creates, hoistCmp, HoistModel, LoadSpec, managed, XH} from '@xh/hoist/core';
+import {panel} from '@xh/hoist/desktop/cmp/panel';
+import {Icon} from '@xh/hoist/icon';
+import React from 'react';
+import {wrapper} from '../../../common';
+
+export const simpleRoutingPanel = hoistCmp.factory({
+    displayName: 'SimpleRoutingPanel',
+    model: creates(() => new SimpleRoutingPanelModel()),
+
+    render({model}) {
+        const routedUrl = `${window.location.origin}/app/other/simpleRouting/123`;
+        return wrapper({
+            description: [
+                <p>
+                    Hoist provides functionality for route parameters to interact with UI
+                    components. The grid below has its selected record synced with a routable URL.
+                </p>,
+                <p>
+                    Given a URL such as <a href={routedUrl}>{routedUrl}</a>, where <code>123</code>{' '}
+                    is a record ID, we can auto-select the matching record in the grid. Updates to
+                    application state can be pushed back to the URL - try selecting a different
+                    record in the grid and observe the URL change.
+                </p>,
+                <p>
+                    Note that this routing relies on an appropriate route path being defined in the
+                    config returned by <code>AppModel.getRoutes()</code>.
+                </p>
+            ],
+            item: panel({
+                title: 'Simple Routing',
+                icon: Icon.gridPanel(),
+                item: grid(),
+                height: 500,
+                width: 700
+            })
+        });
+    }
+});
+
+@managed
+class SimpleRoutingPanelModel extends HoistModel {
+    private readonly BASE_ROUTE = 'default.other.simpleRouting';
+
+    @managed gridModel = new GridModel({
+        columns: [{field: 'id'}, {field: 'company', flex: 1}]
+    });
+
+    constructor() {
+        super();
+        this.addReaction(
+            {
+                // Track lastLoadCompleted to sync route -> grid after initial load.
+                track: () => [XH.routerState.params, this.lastLoadCompleted],
+                run: () => this.updateGridFromRoute()
+            },
+            {
+                track: () => this.gridModel.selectedId,
+                run: () => this.updateRouteFromGrid()
+            }
+        );
+    }
+
+    async updateGridFromRoute() {
+        const {gridModel, BASE_ROUTE} = this,
+            {name: currRouteName, params} = XH.routerState,
+            {recordId} = params;
+
+        // No-op if not on the current base route.
+        if (!currRouteName.startsWith(BASE_ROUTE)) return;
+
+        if (recordId) {
+            await gridModel.selectAsync(Number(recordId));
+
+            // Check and alert if requested record not found, and clean up route to match.
+            if (!gridModel.selectedRecord) {
+                XH.dangerToast(`Record ${recordId} not found.`);
+                XH.navigate(BASE_ROUTE, {replace: true});
+            }
+        } else {
+            gridModel.clearSelection();
+        }
+    }
+
+    updateRouteFromGrid() {
+        const {gridModel, BASE_ROUTE} = this,
+            {name: currRouteName, params} = XH.routerState,
+            {selectedId} = gridModel,
+            {recordId} = params;
+
+        // No-op if not on the current base route, or if route and selection already match.
+        if (!currRouteName.startsWith(BASE_ROUTE) || recordId === selectedId) return;
+
+        if (selectedId) {
+            XH.navigate(
+                'default.other.simpleRouting.recordId',
+                {recordId: selectedId},
+                {replace: true} // avoids adding steps to browser history
+            );
+        } else {
+            XH.navigate('default.other.simpleRouting', {replace: true});
+        }
+    }
+
+    override async doLoadAsync(loadSpec: LoadSpec) {
+        const {trades} = await XH.fetchJson({url: 'trade', loadSpec});
+        this.gridModel.loadData(trades);
+    }
+}