Update map, pan and zoom if the url is edited manually

src/App.vue

@@ -160,6 +160,14 @@ export default defineComponent({
 
 				e.preventDefault();
 				store.commit(MutationTypes.TOGGLE_UI_ELEMENT_VISIBILITY, element);
+			},
+
+			onUrlChange = () => {
+				const parsedUrl = parseUrl();
+
+				if(parsedUrl) {
+					store.commit(MutationTypes.SET_PARSED_URL, parsedUrl);
+				}
 			};
 
 		watch(title, (title) => document.title = title);
@@ -200,10 +208,12 @@ export default defineComponent({
 		onMounted(() => {
 			window.addEventListener('resize', onResize);
 			window.addEventListener('keydown', onKeydown);
+			window.addEventListener('hashchange', onUrlChange);
 		});
 		onUnmounted(() => {
 			window.addEventListener('resize', onResize);
 			window.addEventListener('keydown', onKeydown);
+			window.addEventListener('hashchange', onUrlChange);
 		});
 
 		return {

src/components/Map.vue

@@ -86,6 +86,7 @@ export default defineComponent({
 
 			followTarget = computed(() => store.state.followTarget),
 			panTarget = computed(() => store.state.panTarget),
+			parsedUrl = computed(() => store.state.parsedUrl),
 
 			//Location and zoom to pan to upon next projection change
 			scheduledPan = ref<Coordinate|null>(null),
@@ -108,6 +109,7 @@ export default defineComponent({
 			logoControls,
 			followTarget,
 			panTarget,
+			parsedUrl,
 			mapBackground,
 
 			currentWorld,
@@ -175,22 +177,61 @@ export default defineComponent({
 				} else if(store.state.panTarget && store.state.panTarget.location.world === newValue.name) {
 					store.commit(MutationTypes.CLEAR_PAN_TARGET, undefined);
 					return;
-				//Otherwise pan to url location, if present and if we have just loaded
+				// Otherwise pan to url location, if present
-				} else if(!oldValue && store.state.parsedUrl.location) {
+				} else if(store.state.parsedUrl?.location) {
 					location = store.state.parsedUrl.location;
+					store.commit(MutationTypes.CLEAR_PARSED_URL, undefined);
 				// Otherwise pan to world center
 				} else {
 					location = newValue.center;
 				}
 
 				if(!oldValue) {
-					this.scheduledZoom = typeof store.state.parsedUrl.zoom !== 'undefined' ?
+					this.scheduledZoom = store.state.parsedUrl?.zoom || store.state.configuration.defaultZoom;
-						store.state.parsedUrl.zoom : store.state.configuration.defaultZoom;
 				}
 
 				//Set pan location for when the projection changes
 				this.scheduledPan = location;
 			}
+		},
+		parsedUrl: {
+			handler(newValue) {
+				if(!newValue || !this.currentWorld || !this.leaflet) {
+					return;
+				}
+
+				//URL points to different map
+				if(newValue.world !== this.currentWorld.name || newValue.map !== this.currentMap!.name) {
+					//Set scheduled pan for after map change
+					this.scheduledPan = newValue.location;
+					this.scheduledZoom = newValue.zoom;
+
+					try {
+						useStore().commit(MutationTypes.SET_CURRENT_MAP, {
+							worldName: newValue.world,
+							mapName: newValue.map
+						});
+					} catch(e) {
+						//Clear scheduled pan if change fails
+						console.warn(`Failed to handle URL change`, e);
+						this.scheduledPan = null;
+						this.scheduledZoom = null;
+					}
+				} else { //Same map, just pan
+					this.scheduledPan = null;
+					this.scheduledZoom = null;
+
+					this.leaflet.setZoom(newValue.zoom, {
+						animate: false,
+					});
+
+					this.leaflet.panTo(this.currentProjection.locationToLatLng(newValue.location), {
+						animate: false,
+						noMoveStart: true,
+					});
+				}
+			},
+			deep: true,
 		}
 	},
 

src/store/actions.ts

@@ -109,7 +109,7 @@ export const actions: ActionTree<State, State> & Actions = {
 		}
 
 		// Prefer world from parsed url if present and it exists
-		if(state.parsedUrl.world && state.worlds.has(state.parsedUrl.world)) {
+		if(state.parsedUrl?.world && state.worlds.has(state.parsedUrl.world)) {
 			worldName = state.parsedUrl.world;
 		}
 
@@ -127,7 +127,7 @@ export const actions: ActionTree<State, State> & Actions = {
 			}
 
 			// Prefer map from parsed url if present and it exists
-			if(state.parsedUrl.map && world.maps.has(state.parsedUrl.map)) {
+			if(state.parsedUrl?.map && world.maps.has(state.parsedUrl.map)) {
 				mapName = state.parsedUrl.map;
 			}
 

src/store/mutations.ts

@@ -507,13 +507,7 @@ export const mutations: MutationTree<State> & Mutations = {
 
 	//Clear any existing parsed url
 	[MutationTypes.CLEAR_PARSED_URL](state: State) {
-		state.parsedUrl = {
+		state.parsedUrl = undefined;
-			world: undefined,
-			map: undefined,
-			location: undefined,
-			zoom: undefined,
-			legacy: false,
-		};
 	},
 
 	//Set the follow target, which the map will automatically pan to keep in view

src/store/state.ts

@@ -78,7 +78,7 @@ export type State = {
 		}
 	};
 
-	parsedUrl: LiveAtlasParsedUrl;
+	parsedUrl?: LiveAtlasParsedUrl;
 }
 
 export const state: State = {
@@ -228,13 +228,5 @@ export const state: State = {
 		sidebar: {
 			collapsedSections: new Set(),
 		},
-	},
-
-	parsedUrl: {
-		world: undefined,
-		map: undefined,
-		location: undefined,
-		zoom: undefined,
-		legacy: false,
 	}
 };