Handle geojson layers like other layers by digitaltom · Pull Request #605 · mapforge-org/mapforge

digitaltom · 2026-02-02T23:34:37Z

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Copilot

Pull request overview

Refactors MapLibre layer handling so GeoJSON layers are treated similarly to other layer types (separate sources/styles per layer) and introduces layer-level flags intended to control clustering/heatmap behavior.

Changes:

Introduces per-layer GeoJSON sources (<type>-source-<layerId>) and new feature lookup helpers in maplibre/layers/layers.js.
Updates various MapLibre modules/controllers to use the new feature lookup approach instead of geojsonData.
Adds a Wikipedia marker icon and extends Layer summaries with heatmap/cluster flags.

Reviewed changes

Copilot reviewed 11 out of 12 changed files in this pull request and generated 14 comments.

Show a summary per file

File	Description
public/icons/wikipedia.png	Adds an icon used by the Wikipedia layer features.
app/models/layer.rb	Adds `heatmap`/`cluster` fields and includes them in serialized layer summaries.
app/javascript/maplibre/undo.js	Starts migration away from `geojsonData` imports (but still needs further refactor).
app/javascript/maplibre/styles.js	Updates style initialization and heatmap layer handling; switches feature lookup to `getFeature`.
app/javascript/maplibre/routing/osrm.js	Switches route feature lookup to `getFeature`.
app/javascript/maplibre/map.js	Removes global `geojsonData` usage patterns and shifts rendering toward per-layer sources.
app/javascript/maplibre/layers/layers.js	Initializes per-layer GeoJSON sources/styles and adds `getFeature/getFeatures/hasFeatures`.
app/javascript/maplibre/feature.js	Uses new feature access helpers for edit gating and derived-feature generation inputs.
app/javascript/maplibre/edit.js	Uses new helpers for “untouched map” logic and URL-based selection.
app/javascript/maplibre/controls/shared.js	Updates feature list items to reference the new per-layer source names.
app/javascript/controllers/feature/modal_controller.js	Refactors selected-feature access (now needs `getFeature` import).
app/javascript/controllers/feature/edit_controller.js	Refactors edit-feature access (now needs `getFeature` import).

Comments suppressed due to low confidence (1)

app/javascript/maplibre/map.js:123

initializeMap highlights a URL-selected feature via highlightFeature(feature, true) without passing the feature’s source. Since the default source in highlightFeature is geojson-source (which is no longer created), setFeatureState will fail or highlight the wrong source. Determine the correct source for the feature (e.g., from the owning layer) and pass it explicitly.

    const urlFeatureId = new URLSearchParams(window.location.search).get('f')
    let feature = getFeature(urlFeatureId)
    if (feature) {
      resetControls()
      highlightFeature(feature, true)
      const center = centroid(feature)

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app/models/layer.rb

Copilot · 2026-02-02T23:48:18Z

app/javascript/maplibre/map.js

  // updateData requires a 'GeoJSONSourceDiff', with add/update/remove lists
-  map.getSource('geojson-source').setData(renderedGeojsonData())
+  //map.getSource('geojson-source').setData(renderedGeojsonData())
  console.log('layers:', layers)
-  layers.filter(f => f.type !== 'geojson').forEach((layer) => {
+  layers.forEach((layer) => {
    if (layer.geojson) {
      console.log("Setting layer data", layer.type, layer.id, layer.geojson)
      map.getSource(layer.type + '-source-' + layer.id).setData(layer.geojson, false)


redrawGeojson() no longer calls renderedGeojsonData() and instead pushes layer.geojson directly into each source. This drops the side effects of renderedGeojsonData() (km-marker source updates via renderKmMarkers() and extrusion polygons via renderExtrusionLines()), so km markers / extrusions will stop rendering/updating. Re-introduce those steps in the new per-layer rendering flow (and ensure derived features are included in the appropriate source data).

Copilot · 2026-02-02T23:48:18Z

app/javascript/maplibre/styles.js

-        const feature = geojsonData.features.find(f => f.id === targetId)
+        const feature = getFeature(targetId)
        if (feature) {
          flyToFeature(feature)


When handling onclick-target navigation, flyToFeature(feature) is called without a source. flyToFeature defaults to geojson-source, which no longer exists for per-layer sources, so the follow-up highlight will fail. Pass sourceName (or otherwise resolve the owning source) into flyToFeature.

Suggested change

flyToFeature(feature)

flyToFeature(feature, sourceName)

Copilot · 2026-02-02T23:48:19Z

app/javascript/maplibre/styles.js

    map.addLayer(setSource(styles()[styleName], sourceName))
  })
+  if (heatmap) { map.addLayer(setSource(styles()['heatmap-layer'], sourceName)) }


initializeViewStyles now only adds the heatmap layer when heatmap=true, but existing callers (e.g. overpass layer initialization) invoke it with a single argument. This change will disable rendering for existing heatmap=true overpass queries unless those call sites are updated to pass the flag.

app/javascript/maplibre/feature.js

app/javascript/maplibre/layers/layers.js

app/javascript/maplibre/edit.js

Copilot · 2026-02-02T23:48:20Z

app/javascript/maplibre/layers/layers.js

+    addGeoJSONSource('geojson-source-' + layer.id, false)
+    initializeViewStyles('geojson-source-' + layer.id)


GeoJSON layers are always initialized with cluster=false and without passing the new heatmap flag into initializeViewStyles. Since layer summaries now include cluster/heatmap, these settings appear intended to be configurable but are currently ignored. Consider wiring layer.cluster into addGeoJSONSource(...) and layer.heatmap into initializeViewStyles(..., layer.heatmap).

Suggested change

addGeoJSONSource('geojson-source-' + layer.id, false)

initializeViewStyles('geojson-source-' + layer.id)

addGeoJSONSource('geojson-source-' + layer.id, Boolean(layer.cluster))

initializeViewStyles('geojson-source-' + layer.id, Boolean(layer.heatmap))

app/javascript/maplibre/layers/layers.js

app/javascript/maplibre/map.js

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

app/javascript/maplibre/undo.js

+  let feature = getFeature(prevState.state.id, 'geojson')
+  if (feature) {
+    addRedoState(prevState.type, feature)
+    feature = prevState.state


Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

app/javascript/maplibre/layers/layers.js

-import { layers } from 'maplibre/map'
+import { addGeoJSONSource, map } from 'maplibre/map'
+import { initializeGeoJSONLayers } from 'maplibre/layers/geojson'
+import { initializeKmMarkerStyles } from 'maplibre/feature'


Handle geojson layers like other layers

c336539

Copilot AI review requested due to automatic review settings February 2, 2026 23:34

Copilot started reviewing on behalf of digitaltom February 2, 2026 23:34 View session

Copilot AI reviewed Feb 2, 2026

View reviewed changes

depfu bot and others added 11 commits February 3, 2026 23:59

Update @turf/bbox to version 7.3.3

e30eb46

Update @turf/boolean-point-on-line to version 7.3.3

0fe1003

Update rubycritic to version 4.12.0

65b7335

Update globals to version 17.3.0

ece1224

generalize layer - source naming

a28ebd3

Apply suggestion from @Copilot

e78f365

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

only select geojson features for edit

875194f

update brakeman

7b43bd1

fix import

d50c5ac

load layers directly into layers var

e5990ec

move geojson layer methods

c406f0a

github-code-quality bot found potential problems Feb 5, 2026

View reviewed changes

app/javascript/maplibre/undo.js

let feature = getFeature(prevState.state.id, 'geojson')

if (feature) {

addRedoState(prevState.type, feature)

feature = prevState.state

start to move render methods into specific layers

2ace993

digitaltom marked this pull request as draft February 5, 2026 23:40

digitaltom and others added 5 commits February 6, 2026 00:42

Update app/javascript/maplibre/feature.js

bfd3198

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Merge branch 'main' into unify_layer_handling

b759397

autodetect flyto source

e7600a8

wait for geojson load before styling

fc574be

use layer specific redraw

d26418e

github-code-quality bot found potential problems Feb 6, 2026

View reviewed changes

app/javascript/maplibre/layers/layers.js

import { layers } from 'maplibre/map'

import { addGeoJSONSource, map } from 'maplibre/map'

import { initializeGeoJSONLayers } from 'maplibre/layers/geojson'

import { initializeKmMarkerStyles } from 'maplibre/feature'

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Handle geojson layers like other layers#605

Handle geojson layers like other layers#605
digitaltom wants to merge 18 commits intomainfrom
unify_layer_handling

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		addGeoJSONSource('geojson-source-' + layer.id, false)
		initializeViewStyles('geojson-source-' + layer.id)

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Pull request overview

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