From 04f948c5ee44852d427559f8bb2e84d22232752c Mon Sep 17 00:00:00 2001
From: razvanMiu <miu.razvan28@gmail.com>
Date: Tue, 11 May 2021 14:55:37 +0300
Subject: [PATCH] Update

---
 .../DiscodataOpenlayersMapBlock/View.jsx      | 30 +++++-
 .../DiscodataOpenlayersMapBlock/style.css     | 99 +++++++++++++++++++
 2 files changed, 124 insertions(+), 5 deletions(-)

diff --git a/src/components/manage/Blocks/DiscodataOpenlayersMapBlock/View.jsx b/src/components/manage/Blocks/DiscodataOpenlayersMapBlock/View.jsx
index 34ae95c..9c2faa8 100644
--- a/src/components/manage/Blocks/DiscodataOpenlayersMapBlock/View.jsx
+++ b/src/components/manage/Blocks/DiscodataOpenlayersMapBlock/View.jsx
@@ -19,7 +19,7 @@ import PrivacyProtection from './PrivacyProtection';
 // VOLTO-DATABLOCKS
 import { setQueryParam } from 'volto-datablocks/actions';
 // SEMANTIC REACT UI
-import { Grid, Header } from 'semantic-ui-react';
+import { Grid, Header, Progress } from 'semantic-ui-react';
 // SVGs
 import clearSVG from '@plone/volto/icons/clear.svg';
 import navigationSVG from '@plone/volto/icons/navigation.svg';
@@ -104,6 +104,7 @@ const OpenlayersMapView = (props) => {
   const [mapRendered, setMapRendered] = useState(false);
   const [firstFilteringUpdate, setFirstFilteringUpdate] = useState(false);
   const [prepareMapRender, setPrepareMapRender] = useState(false);
+  const [loading, setLoading] = useState(false);
   const selectedSiteRef = useRef(null);
   const selectedSiteCoordinates = useRef(null);
   const regionsSourceWhere = useRef('');
@@ -147,7 +148,7 @@ const OpenlayersMapView = (props) => {
 
   useEffect(() => {
     if (__CLIENT__ && document) {
-      // MOuNT
+      // MOUNT
       if (!OL_LOADED) {
         Map = require('ol/Map').default;
         View = require('ol/View').default;
@@ -875,6 +876,7 @@ const OpenlayersMapView = (props) => {
       let reqs = 0;
       sitesSource = new VectorSource({
         loader: function (extent, resolution, projection) {
+          setLoading(true);
           this.resolution = resolution;
           if (mounted.current && firstFilteringDone.current) {
             let url = `https://air.discomap.eea.europa.eu/arcgis/rest/services/Air/IED_SiteMap/FeatureServer/0/query/?f=json&returnGeometry=true&spatialRel=esriSpatialRelIntersects&geometry=${encodeURIComponent(
@@ -908,10 +910,10 @@ const OpenlayersMapView = (props) => {
                   if (features.length > 0) {
                     sitesSource.addFeatures(features);
                   }
-                  sitesSource.dispatchEvent(
-                    new VectorSourceEvent('updateClosestFeature'),
-                  );
                 }
+                sitesSource.dispatchEvent(
+                  new VectorSourceEvent('updateClosestFeature'),
+                );
               },
             );
           }
@@ -1063,6 +1065,7 @@ const OpenlayersMapView = (props) => {
       //  Events
       sitesSource.on('updateClosestFeature', function (e) {
         if (!reqs && e.target.getState() === 'ready' && mounted.current) {
+          setLoading(false);
           if (selectedSiteCoordinates.current) {
             const closestFeature = sitesSource.getClosestFeatureToCoordinate(
               selectedSiteCoordinates.current,
@@ -1158,6 +1161,23 @@ const OpenlayersMapView = (props) => {
 
   const view = (
     <>
+      {loading ? (
+        <div className="loader">
+          <svg className="circular-loader" viewBox="25 25 50 50">
+            <circle
+              className="loader-path"
+              cx="50"
+              cy="50"
+              r="20"
+              fill="none"
+              stroke="#7C9AC0"
+              stroke-width="8"
+            />
+          </svg>
+        </div>
+      ) : (
+        ''
+      )}
       <div id="map" className="map" />
       <div id="popup" className="popup">
         {state.popup.element && (
diff --git a/src/components/manage/Blocks/DiscodataOpenlayersMapBlock/style.css b/src/components/manage/Blocks/DiscodataOpenlayersMapBlock/style.css
index dd26b3c..7222961 100644
--- a/src/components/manage/Blocks/DiscodataOpenlayersMapBlock/style.css
+++ b/src/components/manage/Blocks/DiscodataOpenlayersMapBlock/style.css
@@ -15,6 +15,105 @@
   height: 100%;
 }
 
+.loader {
+  position: absolute;
+  width: 32px;
+  height: 32px;
+  font-weight: bold;
+  font-size: 30px;
+  z-index: 1;
+  bottom: 1rem;
+  right: 1rem;
+}
+
+.circular-loader {
+  width: 100%;
+  height: 100%;
+  -webkit-animation: rotate 2s linear infinite;
+          animation: rotate 2s linear infinite;
+  -webkit-transform-origin: center center;
+      -ms-transform-origin: center center;
+          transform-origin: center center;
+}
+
+.loader-path {
+  stroke-dasharray: 150,200;
+  stroke-dashoffset: -10;
+  -webkit-animation: dash 1.5s ease-in-out infinite, color 6s ease-in-out infinite;
+          animation: dash 1.5s ease-in-out infinite, color 6s ease-in-out infinite;
+  stroke-linecap: round;
+}
+
+@-webkit-keyframes rotate {
+  100% {
+    -webkit-transform: rotate(360deg);
+            transform: rotate(360deg);
+  }
+}
+
+@keyframes rotate {
+  100% {
+    -webkit-transform: rotate(360deg);
+            transform: rotate(360deg);
+  }
+}
+@-webkit-keyframes dash {
+  0% {
+    stroke-dasharray: 1,200;
+    stroke-dashoffset: 0;
+  }
+  50% {
+    stroke-dasharray: 89,200;
+    stroke-dashoffset: -35;
+  }
+  100% {
+    stroke-dasharray: 89,200;
+    stroke-dashoffset: -124;
+  }
+}
+@keyframes dash {
+  0% {
+    stroke-dasharray: 1,200;
+    stroke-dashoffset: 0;
+  }
+  50% {
+    stroke-dasharray: 89,200;
+    stroke-dashoffset: -35;
+  }
+  100% {
+    stroke-dasharray: 89,200;
+    stroke-dashoffset: -124;
+  }
+}
+@-webkit-keyframes color {
+  0% {
+    stroke: #7C9AC0;
+  }
+  40% {
+    stroke: #7C9AC0;
+  }
+  66% {
+    stroke: #7C9AC0;
+  }
+  80%, 90% {
+    stroke: #7C9AC0;
+  }
+}
+@keyframes color {
+  0% {
+    stroke: #7C9AC0;
+  }
+  40% {
+    stroke: #7C9AC0;
+  }
+  66% {
+    stroke: #7C9AC0;
+  }
+  80%, 90% {
+    stroke: #7C9AC0;
+  }
+}
+
 #map-loader.ui.active {
   position: absolute !important;
   top: 0 !important;