Popup keyboard navigation bug when dismissing popup

src/mapml/features/featureGroup.js

@@ -59,6 +59,7 @@ export var FeatureGroup = L.FeatureGroup.extend({
    * @private
    */
   _handleFocus: function(e) {
+    // tab, shift, cr, esc, up, left, down, right, 
     if(([9, 16, 27, 37, 38, 39, 40].includes(e.keyCode)) && e.type === "keydown"){
       let index = this._map.featureIndex.currentIndex;
       // Down/right arrow keys replicate tabbing through the feature index
@@ -94,13 +95,17 @@ export var FeatureGroup = L.FeatureGroup.extend({
           obj._map.featureIndex.inBoundFeatures[0].path.setAttribute("tabindex", 0);
         }, 0);
       }
+      // tab, shift, cr, esc, right, left, up, down, 
+      // 1, 2, 3, 4, 5, 6, 7 (featureIndexOverlay available index items 
+      // [8, 9] being allocated to next, previous menu items).
     } else if (!([9, 16, 13, 27, 37, 38, 39, 40, 49, 50, 51, 52, 53, 54, 55].includes(e.keyCode))){
       this._map.featureIndex.currentIndex = 0;
       this._map.featureIndex.inBoundFeatures[0].path.focus();
     }
-
+
+    // 27 added so that the tooltip opens when dismissing popup with 'esc' key
     if(e.target.tagName.toUpperCase() !== "G") return;
-    if(([9, 13, 16, 37, 38, 39, 40, 49, 50, 51, 52, 53, 54, 55].includes(e.keyCode)) && e.type === "keyup") {
+    if(([9, 13, 16, 37, 38, 39, 40, 49, 50, 51, 52, 53, 54, 55, 27].includes(e.keyCode)) && e.type === "keyup") {
       this.openTooltip();
     } else if (e.keyCode === 13 || e.keyCode === 32){
       this.closeTooltip();

src/mapml/layers/MapLayer.js

@@ -1330,17 +1330,19 @@ export var MapMLLayer = L.Layer.extend({
         let path = focusEvent.originalEvent.path || focusEvent.originalEvent.composedPath();
         let isTab = focusEvent.originalEvent.keyCode === 9,
             shiftPressed = focusEvent.originalEvent.shiftKey;
-        if((path[0].classList.contains("leaflet-popup-close-button") && isTab && !shiftPressed) || focusEvent.originalEvent.keyCode === 27){
+        if ((path[0].classList.contains("leaflet-popup-close-button") && isTab && !shiftPressed) || 
+          focusEvent.originalEvent.keyCode === 27 || 
+          path[0].classList.contains("leaflet-popup-close-button") && focusEvent.originalEvent.keyCode === 13){
           setTimeout(() => {
-            L.DomEvent.stop(focusEvent);
             map.closePopup(popup);
             group.focus();
+            L.DomEvent.stop(focusEvent);
           }, 0);
         } else if ((path[0].title==="Focus Map" || path[0].classList.contains("mapml-popup-content")) && isTab && shiftPressed){
           setTimeout(() => { //timeout needed so focus of the feature is done even after the keypressup event occurs
-            L.DomEvent.stop(focusEvent);
             map.closePopup(popup);
             group.focus();
+            L.DomEvent.stop(focusEvent);
           }, 0);
         }
       }

test/e2e/core/popupTabNavigation.test.js

@@ -127,6 +127,46 @@ test.describe("Playwright Keyboard Navigation + Query Layer Tests" , () => {
       expect(f).toEqual("M330 83L586 83L586 339L330 339z");
     });
 
+    test("Tooltip appears after pressing esc key", async () => {
+      await page.keyboard.press("Enter"); 
+      await page.waitForTimeout(500);
+      await page.keyboard.down("Escape"); // focus back on feature
+      await page.keyboard.up("Escape");
+      await page.waitForTimeout(500);
+
+      const h = await page.evaluateHandle(() => document.querySelector("mapml-viewer"));
+      const nh = await page.evaluateHandle(doc => doc.shadowRoot, h);
+      const rh = await page.evaluateHandle(root => root.activeElement.querySelector(".leaflet-interactive"), nh);
+      const f = await (await page.evaluateHandle(elem => elem.getAttribute("d"), rh)).jsonValue();
+
+      let tooltipCount = await page.$eval("mapml-viewer .leaflet-tooltip-pane", div => div.childElementCount);
+      expect(tooltipCount).toEqual(1);
+      expect(f).toEqual("M330 83L586 83L586 339L330 339z");
+    });
+
+    test("Tooltip appears after pressing enter on close button", async () => {
+      await page.keyboard.press("Enter"); // focus back into popup
+      await page.keyboard.press("Tab"); 
+      await page.keyboard.press("Tab");
+      await page.keyboard.press("Tab");
+      await page.keyboard.press("Tab");
+      await page.keyboard.press("Tab");
+      await page.keyboard.press("Tab"); // focus on x button
+      await page.keyboard.down("Enter"); // press x button
+      await page.keyboard.up("Enter");
+      await page.waitForTimeout(500);
+
+      const h = await page.evaluateHandle(() => document.querySelector("mapml-viewer"));
+      const nh = await page.evaluateHandle(doc => doc.shadowRoot, h);
+      const rh = await page.evaluateHandle(root => root.activeElement.querySelector(".leaflet-interactive"), nh);
+      const f = await (await page.evaluateHandle(elem => elem.getAttribute("d"), rh)).jsonValue();
+
+      let tooltipCount = await page.$eval("mapml-viewer .leaflet-tooltip-pane", div => div.childElementCount);
+      expect(tooltipCount).toEqual(1);
+      expect(f).toEqual("M330 83L586 83L586 339L330 339z");
+
+    });
+
     test("Next feature button focuses next feature", async () => {
       await page.keyboard.press("Enter"); // popup with link
       await page.waitForTimeout(500);