andras/perfect-postcode
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages 2 Wiki Activity Actions

Smal

Browse source
This commit is contained in:
Andras Schmelczer 2026-06-18 08:00:39 +01:00
parent d34478e13c
commit 1934a38677
5 changed files with 66 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

22
frontend/src/lib/url-state.ts
View file

@ -48,7 +48,7 @@ import {
type PoiFilterName,
} from './poi-distance-filter';
import { dedupeTravelTimeEntries } from './travel-params';
import { isOverlayId, type OverlayId } from './overlays';
import { isOverlayId, DEFAULT_OVERLAY_IDS, type OverlayId } from './overlays';
import { CRIME_TYPES, isCrimeTypeValue } from './crime-types';
import { isBasemapId, type BasemapId } from './basemaps';
import {
@ -59,6 +59,7 @@ import {
const POI_NONE_PARAM = '__none';
const CRIME_TYPES_NONE_PARAM = '__none';
const OVERLAY_NONE_PARAM = '__none';
const CRIME_OVERLAY_ID: OverlayId = 'crime-hotspots';
export interface UrlState {
@ -227,7 +228,7 @@ export function parseUrlState(): UrlState {
hasExplicitView: false,
filters: parseFilters(params),
poiCategories: new Set(),
overlays: new Set(),
overlays: new Set(DEFAULT_OVERLAY_IDS),
basemap: 'standard',
colorOpacity: DEFAULT_COLOR_OPACITY,
tab: 'area',
@ -266,9 +267,14 @@ export function parseUrlState(): UrlState {
}
}
// Overlays default to DEFAULT_OVERLAY_IDS on a fresh visit; explicit `overlay`
// params override that, and the `__none` sentinel records "all off" so it
// survives a reload instead of silently restoring the defaults.
const overlayParams = params.getAll('overlay');
if (overlayParams.length > 0) {
result.overlays = new Set(overlayParams.filter(isOverlayId));
result.overlays = overlayParams.includes(OVERLAY_NONE_PARAM)
? new Set()
: new Set(overlayParams.filter(isOverlayId));
}
// Crime-type filter: repeated `crimeType` params, or the `__none` sentinel.
@ -451,8 +457,14 @@ export function stateToParams(
}
if (selectedOverlays) {
for (const overlay of selectedOverlays) {
params.append('overlay', overlay);
if (selectedOverlays.size === 0) {
// Distinguish a deliberate "all overlays off" from a fresh visit, which
// would otherwise re-apply the defaults on reload.
params.append('overlay', OVERLAY_NONE_PARAM);
} else {
for (const overlay of selectedOverlays) {
params.append('overlay', overlay);
}
}
}