fix example img download in chrome/safari

Author: warm-coolguy

packages/clients/diplan/example/index.html

@@ -38,7 +38,7 @@ <h2>Informationen aus Kartenklient</h2>
             </tr>
             <tr>
               <td><code>plugin/export/exportedMap</code></td>
-              <td><img onclick="window.open(this.src, '_blank');" id="subscribed-export" /></td>
+              <td><a id="subscribed-export-a" download="polar_screenshot.png" href=""><img id="subscribed-export-img" /></a></td>
               <td>Screenshot des aktuellen Kartenausschnitts. Produzierbar durch Klick auf den unteren linken "Export"-Button.</td>
             </tr>
             <tr>

packages/clients/diplan/example/prod-example.html

@@ -38,7 +38,7 @@ <h2>Informationen aus Kartenklient</h2>
             </tr>
             <tr>
               <td><code>plugin/export/exportedMap</code></td>
-              <td><img onclick="window.open(this.src, '_blank');" id="subscribed-export" /></td>
+              <td><a id="subscribed-export-a" download="polar_screenshot.png" href=""><img id="subscribed-export-img" /></a></td>
               <td>Screenshot des aktuellen Kartenausschnitts. Produzierbar durch Klick auf den unteren linken "Export"-Button.</td>
             </tr>
             <tr>

packages/clients/diplan/example/setup.js

@@ -42,7 +42,8 @@ export default (client, layerConf, config) => {
 
       const htmlZoom = document.getElementById('subscribed-zoom')
       const htmlGfi = document.getElementById('subscribed-gfi')
-      const htmlExport = document.getElementById('subscribed-export')
+      const htmlExportA = document.getElementById('subscribed-export-a')
+      const htmlExportImg = document.getElementById('subscribed-export-img')
 
       mapInstance.subscribe(
         'plugin/zoom/zoomLevel',
@@ -52,9 +53,17 @@ export default (client, layerConf, config) => {
         'plugin/gfi/featureInformation',
         (v) => (htmlGfi.innerHTML = JSON.stringify(v, null, 2))
       )
-      mapInstance.subscribe('plugin/export/exportedMap', (screenshot) =>
-        htmlExport.setAttribute('src', screenshot)
-      )
+      mapInstance.subscribe('plugin/export/exportedMap', (screenshot) => {
+        htmlExportImg.setAttribute('src', screenshot)
+        if (navigator.userAgent.toLowerCase().includes('firefox')) {
+          htmlExportImg.onclick = function () {
+            window.open(this.src, '_blank')
+          }
+          htmlExportA.onclick = () => false
+        } else {
+          htmlExportA.setAttribute('href', screenshot)
+        }
+      })
 
       window.mapInstance = mapInstance
     })