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remember active overlays

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This commit is contained in:
vcoppe
2024-05-06 15:52:11 +02:00
parent 281b20249d
commit 86d941b00d
5 changed files with 60 additions and 16 deletions
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22
website/src/lib/db.ts
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@@ -47,6 +47,26 @@ function dexieSettingStore(setting: string, initial: any): Writable<any> {
};
}
// Wrap Dexie live queries in a Svelte store to avoid triggering the query for every subscriber, and updates to the store are pushed to the DB
function dexieUninitializedSettingStore(setting: string, initial: any): Writable<any> {
let store = writable(undefined);
liveQuery(() => db.settings.get(setting)).subscribe(value => {
if (value !== undefined) {
store.set(value);
} else {
store.set(initial);
}
});
return {
subscribe: store.subscribe,
set: (value: any) => db.settings.put(value, setting),
update: (callback: (value: any) => any) => {
let newValue = callback(get(store));
db.settings.put(newValue, setting);
}
};
}
export const settings = {
distanceUnits: dexieSettingStore('distanceUnits', 'metric'),
velocityUnits: dexieSettingStore('velocityUnits', 'speed'),
@@ -64,7 +84,7 @@ export const settings = {
currentBasemap: dexieSettingStore('currentBasemap', defaultBasemap),
previousBasemap: dexieSettingStore('previousBasemap', defaultBasemap),
selectedBasemapTree: dexieSettingStore('selectedBasemapTree', defaultBasemapTree),
currentOverlays: dexieSettingStore('currentOverlays', defaultOverlays),
currentOverlays: dexieUninitializedSettingStore('currentOverlays', defaultOverlays),
previousOverlays: dexieSettingStore('previousOverlays', defaultOverlays),
selectedOverlayTree: dexieSettingStore('selectedOverlayTree', defaultOverlayTree),
};