fixed performance of panning with something selected by making TemplateMenu ot render unless it has explicitly been activated.

1 files changed, 4 insertions, 5 deletions

diff --git a/src/client/views/TemplateMenu.tsx b/src/client/views/TemplateMenu.tsx
index b76137f06..6894500dd 100644
--- a/src/client/views/TemplateMenu.tsx
+++ b/src/client/views/TemplateMenu.tsx
@@ -124,7 +124,7 @@ export class TemplateMenu extends React.Component<TemplateMenuProps> {
         templateMenu.push(<OtherToggle key={"chrome"} name={"Chrome"} checked={layout._chromeStatus !== "disabled"} toggle={this.toggleChrome} />);
         templateMenu.push(<OtherToggle key={"default"} name={"Default"} checked={templateName === "layout"} toggle={this.toggleDefault} />);
         if (noteTypesDoc) {
-            addedTypes.concat(noteTypes).map(template => template.treeViewChecked = ComputedField.MakeFunction(`templateIsUsed(self)`));
+            addedTypes.concat(noteTypes).map(template => template.treeViewChecked = ComputedField.MakeFunction(`templateIsUsed(self,firstDoc)`, {}, { firstDoc }));
             this._addedKeys && Array.from(this._addedKeys).filter(key => !noteTypes.some(nt => nt.title === key)).forEach(template => templateMenu.push(
                 <OtherToggle key={template} name={template} checked={templateName === template} toggle={e => this.toggleLayout(e, template)} />));
         }
@@ -175,11 +175,10 @@ Scripting.addGlobal(function switchView(doc: Doc, template: Doc | undefined) {
     return templateTitle && DocumentView.makeCustomViewClicked(doc, Docs.Create.FreeformDocument, templateTitle, template);
 });
 
-Scripting.addGlobal(function templateIsUsed(templateDoc: Doc) {
-    const firstDoc = SelectionManager.SelectedDocuments().length ? SelectionManager.SelectedDocuments()[0].props.Document : undefined;
-    if (firstDoc) {
+Scripting.addGlobal(function templateIsUsed(templateDoc: Doc, selDoc: Doc) {
+    if (selDoc) {
         const template = StrCast(templateDoc.dragFactory ? Cast(templateDoc.dragFactory, Doc, null)?.title : templateDoc.title);
-        return StrCast(firstDoc.layoutKey) === "layout_" + template ? 'check' : 'unchecked';
+        return StrCast(selDoc.layoutKey) === "layout_" + template ? 'check' : 'unchecked';
     }
     return false;
 });
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