Migration to new Rust-based engine (#401)

* wasm first steps * parsing start * parsing continued * progress * progress * progress * progress * progress * progress * progress * progress * fixes * reorganize * change type * fix * progress * refactoring * progress * progress * progress * keep style info * progress * progress * remove (copy) in name * progress * merge methods into 1 * splice * progress * progress * progress * cleaning * progress * progress * progress * visibility * progress * progress * progress * progress * progress * fixes * progress * fix markers * fix * progress * progress * progress * progress * progress * progress * small fix * use engine info * fix popups * small fix * progress * progress * progress * clean tool * handle self closing elements * reduce data exchanges across boundary * copy on wasm side to avoid any data corruption * speed fix * routing * refactoring * reverse * reverse * crop * split * merge * progress * time tool * fix bounds for waypoints * reduce * fix reactivity * handle corrupt time data * export * progress * remove gpx js package * remove todo * update readme * cleaning * progress * fix link fields * remove unused fields * refactoring and tests * import and export of routes, ref #192 * per-chunk categories storage * cross-tab sync * outdated state * refactoring * reorder methods * refactoring * fix * improve flow * renaming * progress * progress * fix * progress * per file history * keep original flag * use history variant * fix * progress * file explorer * progress * fix * sticky folders * improved sticky folders * fix sortable * fix sortable * fix * fix tab size * no file delete on desktop * fix routing on other file * fix sorting * remember language * open links in browser * commit missing changes * avoid selecting on resize * clarify filename * explorer actions * fix folder styling * drop anywhere in folder * cleaning * fixes * remove focus-ring * full screen * small fix * consistent highlight color * improved preview * performance improvements * sparser data transfers * sparser data transfers * show popup once data is loaded * fix routing control size * fix * sparse desktop build * remove custom ign styles * use new endpoint for openhikingmap * strip native menu * reorder context menu items * route full support * route - track conversion * create route file action * route export, filter out anchors at high zoom level * clarify name handling * move hide & center to view * routes continued * update docs * fix power format, closes #378 * lint fixes * fix display of additional data with gaps, closes #361 * fix linting issues * fix import modules * fix multidrag * change base to resolve * fix type errors * fix layer typings * fix last type error * each keys * improve typings * deploy to cloudflare --------- Co-authored-by: vcoppe <vcoppe@hexaly.com>
2026-11-15 07:07:07 +00:00 · 2026-10-31 18:08:22 +01:00
1 parent 6a0d434371
commit 8fe7d8d64d
@@ -0,0 +1,50 @@
+import type { Readable } from 'svelte/store';
+import { engine } from './engine';
+import type { FileState, FileStatesCallback } from './types';
+
+/**
+ * Tells when file stores appear and disappear, so that their subscribers know when to
+ * subscribe and unsubscribe. `onFilesAdded` is called with the stores of the new files only
+ * (including the ones already present when the observer is created).
+ */
+export class FileStateCollectionObserver {
+    private _fileIds = new Set<string>();
+    private _onFilesAdded: FileStatesCallback;
+    private _onFileRemoved: (fileId: string) => void;
+    private _onDestroy: () => void;
+    private _unsubscribe: () => void;
+
+    constructor(
+        onFilesAdded: FileStatesCallback,
+        onFileRemoved: (fileId: string) => void,
+        onDestroy: () => void
+    ) {
+        this._onFilesAdded = onFilesAdded;
+        this._onFileRemoved = onFileRemoved;
+        this._onDestroy = onDestroy;
+
+        this._unsubscribe = engine.files.subscribe((files) => {
+            this._fileIds.forEach((fileId) => {
+                if (!files.has(fileId)) {
+                    this._onFileRemoved(fileId);
+                    this._fileIds.delete(fileId);
+                }
+            });
+            const newFiles = new Map<string, Readable<FileState>>();
+            files.forEach((store, fileId) => {
+                if (!this._fileIds.has(fileId)) {
+                    newFiles.set(fileId, store);
+                    this._fileIds.add(fileId);
+                }
+            });
+            if (newFiles.size > 0) {
+                this._onFilesAdded(newFiles);
+            }
+        });
+    }
+
+    destroy() {
+        this._onDestroy();
+        this._unsubscribe();
+    }
+}