Keep Contacts, active layer intents and mapped sites across globe switches

src/ui/contextControls.js

@@ -85,6 +85,19 @@ export class ContextControls {
       this[field] = null;
     }
   }
+  canRetainContacts() {
+    return this._contextMode === 'flights' && !this._contextModeChanging &&
+      !this._contextRestoreState && !this._clearSelectedLayersPromise &&
+      !this._contextLayerReactionPromises.size;
+  }
+  captureScene() {
+    return { mode: this._contextMode, snapshot: this._contextSessionSnapshot };
+  }
+  resumeScene(saved) {
+    if (!saved) return;
+    this._contextMode = saved.mode;
+    this._contextSessionSnapshot = saved.snapshot;
+  }
   stop() {
     if (this.destroyed) return;
     this.destroyed = true;