refactor: separate installation and proximity context components

src/layers/installations/lifecycle.js

@@ -0,0 +1,62 @@
+import * as Cesium from 'cesium';
+import { LAYER_ID } from './policy.js';
+
+export function createLifecycle({
+  state: layerState,
+  services,
+  parts,
+  source,
+}) {
+  const { registerPickOwner, unregisterPickOwner } = services.picking;
+  const { clearSelectedEntityContextForLayer } = services.context;
+
+  const methods = {
+    init(viewer) {
+      layerState.viewer = viewer;
+      layerState.dataSource = new Cesium.CustomDataSource(
+        'military-installations',
+      );
+      viewer.dataSources.add(layerState.dataSource);
+      layerState.moveEndRemove = viewer.camera.moveEnd.addEventListener(
+        parts.viewport.scheduleLoad,
+      );
+      parts.selection.installInteraction(viewer);
+    },
+
+    enable() {
+      layerState.enabled = true;
+      registerPickOwner(LAYER_ID, (id) => layerState.recordById.has(id));
+      layerState.dataSource.show = true;
+      // DataLayerManager invokes update() immediately after enable(), which owns
+      // the first fetch. Avoid racing it with a second aborting request here.
+    },
+
+    disable() {
+      layerState.enabled = false;
+      unregisterPickOwner(LAYER_ID);
+      parts.viewport.clearUnavailableRetry();
+      clearTimeout(layerState.timer);
+      layerState.abort?.abort();
+      layerState.abort = null;
+      layerState.loading = false;
+      if (layerState.dataSource) layerState.dataSource.show = false;
+      clearSelectedEntityContextForLayer(LAYER_ID);
+      layerState.selectedId = null;
+      layerState.failureReason = null;
+      parts.ingestion.setInstallationStatus('idle');
+    },
+
+    destroy(viewer) {
+      this.disable();
+      layerState.moveEndRemove?.();
+      layerState.clickHandler?.destroy();
+      layerState.clickHandler = null;
+      parts.rendering.clearRendered();
+      if (layerState.dataSource && viewer)
+        viewer.dataSources.remove(layerState.dataSource, true);
+      layerState.dataSource = null;
+    },
+  };
+
+  return { methods };
+}