WebUI: Fix row collapsing with virtual list enabled

Fixes https://github.com/qbittorrent/qBittorrent/issues/23241#issuecomment-3295352816.
PR #23542.

src/webui/www/private/scripts/dynamicTable.js

@@ -2359,6 +2359,9 @@ window.qBittorrent.DynamicTable ??= (() => {
 
             for (const [key, _] of this.collapseState)
                 this.expandNode(key);
+
+            if (this.useVirtualList)
+                this.rerender();
         }
 
         collapseAllNodes() {
@@ -2370,6 +2373,9 @@ window.qBittorrent.DynamicTable ??= (() => {
                 if (state.depth >= 1)
                     this.collapseNode(key);
             }
+
+            if (this.useVirtualList)
+                this.rerender();
         }
 
         #updateNodeVisibility(node, shouldHide) {
@@ -2741,8 +2747,10 @@ window.qBittorrent.DynamicTable ??= (() => {
 
         generateRowsSignature() {
             const rowsData = [];
-            for (const { rowId } of this.getRowValues())
+            for (const { rowId } of this.getRowValues()) {
-                rowsData.push({ ...this.getNode(rowId).serialize(), collapsed: this.isCollapsed(rowId) });
+                const node = this.getNode(rowId);
+                rowsData.push({ ...node.serialize(), collapsed: this.isCollapsed(node.rowId) });
+            }
             return JSON.stringify(rowsData);
         }
 
@@ -2771,7 +2779,7 @@ window.qBittorrent.DynamicTable ??= (() => {
             // sort, then filter
             this.#sortNodesByColumn(root, this.columns[this.sortedColumn]);
             const rows = (() => {
-                if (this.filterTerms.length === 0) {
+                if (!this.useVirtualList && (this.filterTerms.length === 0)) {
                     const nodeArray = this.fileTree.toArray();
                     const filteredRows = nodeArray.map(node => this.getRow(node));
                     return filteredRows;

src/webui/www/private/scripts/prop-files.js

@@ -74,6 +74,7 @@ window.qBittorrent.PropFiles ??= (() => {
         const new_hash = torrentsTable.getCurrentTorrentID();
         if (new_hash === "") {
             torrentFilesTable.clear();
+            current_hash = "";
             clearTimeout(loadTorrentFilesDataTimer);
             return;
         }
@@ -176,6 +177,7 @@ window.qBittorrent.PropFiles ??= (() => {
 
     const clear = () => {
         torrentFilesTable.clear();
+        current_hash = "";
     };
 
     return exports();