Allow a column picker and persist columns in advanced search. Closes #1118

chrome/content/zotero/advancedSearch.js

@@ -26,7 +26,7 @@
 
 Components.utils.import("resource://gre/modules/Services.jsm");
 import ItemTree from 'zotero/itemTree';
-import { getColumnDefinitionsByDataKey } from 'zotero/itemTreeColumns'
+import { COLUMNS } from 'zotero/itemTreeColumns';
 
 
 var ZoteroAdvancedSearch = new function() {
@@ -56,11 +56,18 @@ var ZoteroAdvancedSearch = new function() {
 		});
 		
 		var elem = document.getElementById('zotero-items-tree');
+		const columns = COLUMNS.map((column) => {
+			column = Object.assign({}, column);
+			column.hidden = !['title', 'firstCreator'].includes(column.dataKey);
+			return column;
+		});
 		this.itemsView = await ItemTree.init(elem, {
 			id: "advanced-search",
 			dragAndDrop: true,
+			persistColumns: true,
+			columnPicker: true,
 			onActivate: this.onItemActivate.bind(this),
-			columns: getColumnDefinitionsByDataKey(["title", "firstCreator"]),
+			columns,
 		});
 
 		// A minimal implementation of Zotero.CollectionTreeRow

chrome/content/zotero/itemTree.jsx

@@ -3200,7 +3200,7 @@ var ItemTree = class ItemTree extends LibraryTree {
 			if (this.props.persistColumns) {
 				if (column.disabledIn && column.disabledIn.includes(visibilityGroup)) continue;;
 				const columnSettings = columnsSettings[column.dataKey];
-				if (!columnSettings) {
+				if (!columnSettings && this.id === 'main') {
 					column = this._setLegacyColumnSettings(column);
 				}