Moving the map center to the current location when required.

package-lock.json

@@ -8,6 +8,7 @@
       "name": "dyomedeaOl",
       "version": "0.0.1",
       "dependencies": {
+        "@awesome-cordova-plugins/geolocation": "^6.2.0",
         "@capacitor/android": "4.5.0",
         "@capacitor/app": "4.1.1",
         "@capacitor/core": "4.5.0",
@@ -27,6 +28,10 @@
         "@types/react-router-dom": "^5.1.7",
         "history": "^4.9.0",
         "ionicons": "^6.0.3",
+        "jotai": "^1.10.0",
+        "jotai-location": "^0.2.0",
+        "jotai-utils": "^0.0.0",
+        "lodash": "^4.17.21",
         "ol": "^7.1.0",
         "react": "^18.2.0",
         "react-dom": "^18.2.0",
@@ -48,7 +53,8 @@
         "workbox-streams": "^5.1.4"
       },
       "devDependencies": {
-        "@capacitor/cli": "4.5.0"
+        "@capacitor/cli": "4.5.0",
+        "@types/lodash": "^4.14.189"
       }
     },
     "node_modules/@adobe/css-tools": {
@@ -68,6 +74,30 @@
         "node": ">=6.0.0"
       }
     },
+    "node_modules/@awesome-cordova-plugins/core": {
+      "version": "6.2.0",
+      "resolved": "https://registry.npmjs.org/@awesome-cordova-plugins/core/-/core-6.2.0.tgz",
+      "integrity": "sha512-z5rKlTuQpLLPEIgzOmomQdoiRw5Sal2blh5CJRcjqh8ktspefbNC81Ni0MykPdV78/UlRORTHEzxugpcEcl1RQ==",
+      "peer": true,
+      "dependencies": {
+        "@types/cordova": "latest"
+      },
+      "peerDependencies": {
+        "rxjs": "^5.5.0 || ^6.5.0 || ^7.3.0"
+      }
+    },
+    "node_modules/@awesome-cordova-plugins/geolocation": {
+      "version": "6.2.0",
+      "resolved": "https://registry.npmjs.org/@awesome-cordova-plugins/geolocation/-/geolocation-6.2.0.tgz",
+      "integrity": "sha512-EGUwTOrH4GjFHH4Zt0pzExg2TasJqQdYDcV4qpW8lY41fJBEFJCAB8KmSsD60hi25S5DxHQSJjsTuGBq2bq6DA==",
+      "dependencies": {
+        "@types/cordova": "latest"
+      },
+      "peerDependencies": {
+        "@awesome-cordova-plugins/core": "^6.0.1",
+        "rxjs": "^5.5.0 || ^6.5.0 || ^7.3.0"
+      }
+    },
     "node_modules/@babel/code-frame": {
       "version": "7.18.6",
       "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.18.6.tgz",
@@ -3669,6 +3699,11 @@
         "@types/node": "*"
       }
     },
+    "node_modules/@types/cordova": {
+      "version": "0.0.34",
+      "resolved": "https://registry.npmjs.org/@types/cordova/-/cordova-0.0.34.tgz",
+      "integrity": "sha512-rkiiTuf/z2wTd4RxFOb+clE7PF4AEJU0hsczbUdkHHBtkUmpWQpEddynNfJYKYtZFJKbq4F+brfekt1kx85IZA=="
+    },
     "node_modules/@types/eslint": {
       "version": "8.4.10",
       "resolved": "https://registry.npmjs.org/@types/eslint/-/eslint-8.4.10.tgz",
@@ -3825,6 +3860,12 @@
       "resolved": "https://registry.npmjs.org/@types/json5/-/json5-0.0.29.tgz",
       "integrity": "sha512-dRLjCWHYg4oaA77cxO64oO+7JwCwnIzkZPdrrC71jQmQtlhM556pwKo5bUzqvZndkVbeFLIIi+9TC40JNF5hNQ=="
     },
+    "node_modules/@types/lodash": {
+      "version": "4.14.189",
+      "resolved": "https://registry.npmjs.org/@types/lodash/-/lodash-4.14.189.tgz",
+      "integrity": "sha512-kb9/98N6X8gyME9Cf7YaqIMvYGnBSWqEci6tiettE6iJWH1XdJz/PO8LB0GtLCG7x8dU3KWhZT+lA1a35127tA==",
+      "dev": true
+    },
     "node_modules/@types/mime": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/@types/mime/-/mime-3.0.1.tgz",
@@ -10277,6 +10318,72 @@
         "url": "https://github.com/chalk/supports-color?sponsor=1"
       }
     },
+    "node_modules/jotai": {
+      "version": "1.10.0",
+      "resolved": "https://registry.npmjs.org/jotai/-/jotai-1.10.0.tgz",
+      "integrity": "sha512-3Q8kQU3Ktds+80Ku4dVcvnwSXEcK0Fg0b6mC1+4wz3rmF64lOGNUySKXQ4njvYCWodR8bw2HygOKYSYkHxQQmA==",
+      "engines": {
+        "node": ">=12.7.0"
+      },
+      "peerDependencies": {
+        "@babel/core": "*",
+        "@babel/template": "*",
+        "jotai-immer": "*",
+        "jotai-optics": "*",
+        "jotai-redux": "*",
+        "jotai-tanstack-query": "*",
+        "jotai-urql": "*",
+        "jotai-valtio": "*",
+        "jotai-xstate": "*",
+        "jotai-zustand": "*",
+        "react": ">=16.8"
+      },
+      "peerDependenciesMeta": {
+        "@babel/core": {
+          "optional": true
+        },
+        "@babel/template": {
+          "optional": true
+        },
+        "jotai-immer": {
+          "optional": true
+        },
+        "jotai-optics": {
+          "optional": true
+        },
+        "jotai-redux": {
+          "optional": true
+        },
+        "jotai-tanstack-query": {
+          "optional": true
+        },
+        "jotai-urql": {
+          "optional": true
+        },
+        "jotai-valtio": {
+          "optional": true
+        },
+        "jotai-xstate": {
+          "optional": true
+        },
+        "jotai-zustand": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/jotai-location": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/jotai-location/-/jotai-location-0.2.0.tgz",
+      "integrity": "sha512-SS4HyCf+PUKtyUZ7ge820ti92NUDRx4AvSuINTFx8kuAxbusMYjNSntcTJy2Fg+R0YPO2RtvV5INzzlUQ+1oGw==",
+      "peerDependencies": {
+        "jotai": "*"
+      }
+    },
+    "node_modules/jotai-utils": {
+      "version": "0.0.0",
+      "resolved": "https://registry.npmjs.org/jotai-utils/-/jotai-utils-0.0.0.tgz",
+      "integrity": "sha512-z/gS7iuWWwXY/JnvsYmcDpcFLnDsJVqkIFJ66h060LY5+cte8S7SDKEVEFPcoM6UQjyy3mj6eEKjcxb1+7OqZw=="
+    },
     "node_modules/js-sdsl": {
       "version": "4.2.0",
       "resolved": "https://registry.npmjs.org/js-sdsl/-/js-sdsl-4.2.0.tgz",
@@ -13700,6 +13807,15 @@
       "resolved": "https://registry.npmjs.org/rw/-/rw-1.3.3.tgz",
       "integrity": "sha512-PdhdWy89SiZogBLaw42zdeqtRJ//zFd2PgQavcICDUgJT5oW10QCRKbJ6bg4r0/UY2M6BWd5tkxuGFRvCkgfHQ=="
     },
+    "node_modules/rxjs": {
+      "version": "7.5.7",
+      "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-7.5.7.tgz",
+      "integrity": "sha512-z9MzKh/UcOqB3i20H6rtrlaE/CgjLOvheWK/9ILrbhROGTweAi1BaFsTT9FbwZi5Trr1qNRs+MXkhmR06awzQA==",
+      "peer": true,
+      "dependencies": {
+        "tslib": "^2.1.0"
+      }
+    },
     "node_modules/safe-buffer": {
       "version": "5.2.1",
       "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.1.tgz",

package.json

@@ -3,6 +3,7 @@
   "version": "0.0.1",
   "private": true,
   "dependencies": {
+    "@awesome-cordova-plugins/geolocation": "^6.2.0",
     "@capacitor/android": "4.5.0",
     "@capacitor/app": "4.1.1",
     "@capacitor/core": "4.5.0",
@@ -22,6 +23,10 @@
     "@types/react-router-dom": "^5.1.7",
     "history": "^4.9.0",
     "ionicons": "^6.0.3",
+    "jotai": "^1.10.0",
+    "jotai-location": "^0.2.0",
+    "jotai-utils": "^0.0.0",
+    "lodash": "^4.17.21",
     "ol": "^7.1.0",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
@@ -67,7 +72,8 @@
     ]
   },
   "devDependencies": {
-    "@capacitor/cli": "4.5.0"
+    "@capacitor/cli": "4.5.0",
+    "@types/lodash": "^4.14.189"
   },
   "description": "An Ionic project"
 }

src/components/get-location/GetLocation.tsx

@@ -1,36 +1,29 @@
 import React from 'react';
 
-// import { Geolocation } from '@awesome-cordova-plugins/geolocation';
+import { Geolocation } from '@awesome-cordova-plugins/geolocation';
 
-import  style from './GetLocation.module.css';
+import style from './GetLocation.module.css';
 import { IonButton, IonIcon } from '@ionic/react';
 import { locateOutline } from 'ionicons/icons';
-// import { useAtom } from 'jotai';
+import { useAtom } from 'jotai';
-// import { setCenterAtom } from '../../App';
+import { stateAtom } from '../map';
+
 // import { locationAtom } from '../map/CurrentLocation';
 
 const GetLocation: React.FC<{}> = () => {
-  // const [, setCenter] = useAtom(setCenterAtom);
+  const [state, setState] = useAtom(stateAtom);
-  // const [, setLocation] = useAtom(locationAtom);
 
-  // const onClickHandler = (event: any) => {
+  const onClickHandler = (event: any) => {
-  //   console.log('Click handler');
+    console.log('Click handler');
-  //   Geolocation.getCurrentPosition().then((position) => {
+    Geolocation.getCurrentPosition().then((position) => {
-  //     console.log(
+      console.log({ caller: 'GetLocation/onClickHandler', position, state });
-  //       `Click handler, position: ${position.coords.latitude}, ${position.coords.longitude}`
+      setState({
-  //     );
+        zoom: state.zoom,
-  //     setCenter({
+        rotation: state.rotation,
-  //       lat: position.coords.latitude,
+        center: [position.coords.longitude, position.coords.latitude],
-  //       lon: position.coords.longitude,
+      });
-  //     });
+    });
-  //     setLocation({
+  };
-  //       lat: position.coords.latitude,
-  //       lon: position.coords.longitude,
-  //     });
-  //   });
-  // };
-
-  // onClick={onClickHandler}
 
   return (
     <IonButton
@@ -38,6 +31,7 @@ const GetLocation: React.FC<{}> = () => {
       shape='round'
       size='small'
       fill='solid'
+      onClick={onClickHandler}
     >
       <IonIcon slot='icon-only' icon={locateOutline} color='white' />
     </IonButton>

src/components/map/Map.tsx

@@ -1,4 +1,8 @@
 import React, { useEffect, useRef } from 'react';
+
+import { atom, useAtom } from 'jotai';
+import { atomWithHash } from 'jotai-location';
+
 import OlMap from 'ol/Map';
 import View from 'ol/View';
 import TileLayer from 'ol/layer/Tile';
@@ -7,37 +11,95 @@ import Rotate from 'ol/control/Rotate';
 import ScaleLine from 'ol/control/ScaleLine';
 import Control from 'ol/control/Control';
 import OSM from 'ol/source/OSM';
+import { useGeographic as olUseGeographic } from 'ol/proj';
+
+import { isEqual } from 'lodash';
 
 import './Map.css';
 import Collection from 'ol/Collection';
-import { createPortal } from 'react-dom';
 import GetLocation from '../get-location';
 
 export interface MapProperties {}
 
-export const Map: React.FC<MapProperties> = (props: MapProperties) => {
+olUseGeographic();
-  const target = useRef<HTMLDivElement>(null);
 
+const mapAtom = atom<OlMap | null>(null);
+
+export const stateAtom = atomWithHash<any>('map', null);
+//atom(
+// (get) => {
+//   const map = get(mapAtom);
+//   const view = map?.getView();
+//   return {
+//     center: view?.getCenter(),
+//     zoom: view?.getZoom(),
+//     rotation: view?.getRotation(),
+//   };
+// },
+// (get, set, state: any) => {
+//   const map = get(mapAtom);
+//   const view = map?.getView();
+//   view?.setCenter(state.center);
+//   view?.setZoom(state.zoom);
+//   view?.setRotation(state.rotation);
+// }
+//);
+
+export const Map: React.FC<MapProperties> = (props: MapProperties) => {
+  const [map, setMap] = useAtom(mapAtom);
+  const [state, setState] = useAtom(stateAtom);
+
+  const target = useRef<HTMLDivElement>(null);
   const getLocation = useRef<HTMLDivElement>(null);
 
-  useEffect(() => {
+  const previousState = useRef<any>(null);
-    // const getLocation = target.current
-    //   ? createPortal(<GetLocation />, target.current)
-    //   : null;
 
+  if (state && map) {
+    if (!isEqual(state, previousState.current)) {
+      console.log({ caller: 'Map / updateView', state });
+      previousState.current = state;
+      map.getView().animate(state);
+    }
+    // const view = map.getView();
+    // view.setCenter(state.center);
+    // view.setZoom(state.zoom);
+    // view.setRotation(state.rotation);
+    // map.renderSync();
+  }
+
+  useEffect(() => {
     console.log({ caller: 'Map / useEffect', target, getLocation });
 
+    const changeListener = (event: any) => {
+      const view = olMap?.getView();
+      const newState = {
+        center: view?.getCenter(),
+        zoom: view?.getZoom(),
+        rotation: view?.getRotation(),
+      };
+      setState(newState);
+
+      console.log({
+        caller: 'Map / changeListener',
+        event,
+        newState,
+        olMap,
+      });
+    };
+
     const controls = new Collection([
       new Attribution({ collapsible: true }),
       new Rotate(),
       new ScaleLine({ bar: true }),
       new Control({ element: getLocation.current ?? undefined }),
     ]);
-    const map = new OlMap({
+    const olMap = new OlMap({
-      view: new View({
+      view: new View(
-        center: [0, 0],
+        state ?? {
-        zoom: 1,
+          center: [0, 0],
-      }),
+          zoom: 1,
+        }
+      ),
       layers: [
         new TileLayer({
           source: new OSM(),
@@ -46,6 +108,8 @@ export const Map: React.FC<MapProperties> = (props: MapProperties) => {
       target: target.current ?? undefined,
       controls,
     });
+    olMap.on(['change', 'moveend'], changeListener);
+    setMap(olMap);
   }, []);
 
   return (

src/components/map/index.ts

@@ -1 +1 @@
-export { default } from './Map';
+export { default, stateAtom } from './Map';