Fix client hangs when hovering over a <map-a> that is too long issue. (Maps4HTML#972)

Closes Maps4HTML#971

Author: prushforth

src/mapml.css

@@ -683,12 +683,16 @@ svg.leaflet-image-layer.leaflet-interactive g {
   bottom: 0;
   background-color: rgb(222,225,230);
   border-radius: 0 5px 0 0 ;
-  z-index: 1050;
+  z-index: 1050;  
+  max-width: 60%;
 }
 
 .mapml-link-preview > p {
   margin: 3px 5px 2px 3px;
   color: rgb(60,64,67);
+  text-overflow: ellipsis;
+  overflow-x: hidden;
+  white-space: nowrap;
 }
 
 /**

src/mapml/features/path.js

@@ -116,20 +116,15 @@ export var Path = L.Path.extend({
       (e) => {
         if (e.target !== e.currentTarget) return;
         hovered = true;
-        let resolver = document.createElement('a'),
-          mapWidth = this._map.getContainer().clientWidth;
+        let resolver = document.createElement('a');
         resolver.href = link.url;
         p.innerHTML = resolver.href;
 
         this._map.getContainer().appendChild(container);
 
-        while (p.clientWidth > mapWidth / 2) {
-          p.innerHTML =
-            p.innerHTML.substring(0, p.innerHTML.length - 5) + '...';
-        }
-        setTimeout(() => {
-          if (hovered) p.innerHTML = resolver.href;
-        }, 1000);
+        //        setTimeout(() => {
+        //          if (hovered) p.innerHTML = resolver.href;
+        //        }, 1000);
       },
       this
     );

src/mapml/layers/FeatureLayer.js

@@ -411,7 +411,7 @@ export var FeatureLayer = L.FeatureGroup.extend({
       );
     }
     let cs =
-      feature.getElementsByTagName('map-geometry')[0]?.getAttribute('cs') ||
+      feature.getElementsByTagName('map-geometry')[0]?.getAttribute('cs') ??
       fallbackCS;
     // options.layerBounds and options.zoomBounds are set by TemplatedTileLayer._createFeatures
     // each geometry needs bounds so that it can be a good community member of this._layers

src/mapml/layers/TemplatedFeaturesLayer.js

@@ -66,6 +66,7 @@ export var TemplatedFeaturesLayer = L.Layer.extend({
         }
       });
       L.extend(this._features.options, { _leafletLayer: this._features });
+      this._features._layerEl = this._linkEl.getLayerEl();
     } else {
       this._features.eachLayer((layer) => layer.addTo(map));
     }

test/e2e/elements/map-a/map-a-inline-or-remote-templated-issue-968.test.js renamed to test/e2e/elements/map-a/map-a-inline-or-remote-templated.test.js

@@ -72,4 +72,16 @@ test.describe('map-a loaded inline or remote, directly or via templated map-link
       );
     });
   }
+  test('Long map-a href is actionable, does not cause client to hang', async () => {
+    const longUrl = "http://localhost:8080/geoserver/tiger/wms?service=WMS&version=1.1.0&request=GetMap&layers=tiger%3Atiger_roads&bbox=-74.02722%2C40.684221%2C-73.907005%2C40.878178&width=476&height=768&srs=EPSG%3A4326&styles=&format=text%2Fmapml";
+    // remove the top three layers (the bottom layer has a long href)
+    await page.getByTestId('remote-templated').evaluate(layer => layer.remove());
+    await page.getByTestId('inline-templated').evaluate(layer => layer.remove());
+    await page.getByTestId('remote-features').evaluate(layer => layer.remove());
+    const aWithLongHref = page.getByRole('link', { name: 'Long href' });
+    await aWithLongHref.hover();
+    const toast = await page.locator('.mapml-link-preview > p').evaluate((p) => p.innerText );
+    expect(toast).toEqual(longUrl);
+    
+  });
 });

test/e2e/elements/map-a/map-a.html

@@ -49,9 +49,10 @@
             </table>
           </map-properties>
         </map-feature>
-        <map-feature id="poi.1" class="poi-r1-s1 poi-r1-s2">
+        <map-feature data-testid="poi-1" id="poi.1" class="poi-r1-s1 poi-r1-s2">
+          <map-featurecaption>Long href</map-featurecaption>
           <map-geometry>
-            <map-a href="https://example.org/" target="_top">
+            <map-a type="text/mapml" target="_blank" href="http://localhost:8080/geoserver/tiger/wms?service=WMS&version=1.1.0&request=GetMap&layers=tiger%3Atiger_roads&bbox=-74.02722%2C40.684221%2C-73.907005%2C40.878178&width=476&height=768&srs=EPSG%3A4326&styles=&format=text%2Fmapml">
               <map-point>
                 <map-coordinates>-8238806.8429565085 4969306.111096254</map-coordinates>
               </map-point>

test/e2e/layers/multipleExtents.test.js

@@ -261,9 +261,11 @@ test.describe('Multiple Extents Bounds Tests', () => {
     await expect(
       page.locator('.mapml-debug-vectors.projection-centre ')
     ).toHaveCount(1);
+    // templated features formerly did not keep track of their layer- element,
+    // which prevented them from being added to the debug layer. That is fixed.
     await expect(
       page.locator('.mapml-debug-vectors.multiple-extents')
-    ).toHaveCount(2);
+    ).toHaveCount(6);
     await expect(
       page.locator('.mapml-debug-vectors.single-extent')
     ).toHaveCount(1);
@@ -312,9 +314,11 @@ test.describe('Multiple Extents Bounds Tests', () => {
     await expect(
       page.locator('.mapml-debug-vectors.projection-centre ')
     ).toHaveCount(1);
+    // templated features formerly did not keep track of their layer- element,
+    // which prevented them from being added to the debug layer. That is fixed.
     await expect(
       page.locator('.mapml-debug-vectors.multiple-extents')
-    ).toHaveCount(2);
+    ).toHaveCount(6);
     await expect(
       page.locator('.mapml-debug-vectors.single-extent')
     ).toHaveCount(1);