Re-enable expanding on double-click in search results pane.

For some items with Symbols Search this will now both expand and jump to the
result.

src/plugins/find/searchresulttreeitemroles.h

@@ -44,7 +44,7 @@ enum Roles
     ResultIconRole,
     SearchTermStartRole,
     SearchTermLengthRole,
-    RowOfItem // The ?-th child of its parent is this this item
+    IsGeneratedRole
 };
 
 } // namespace Internal

src/plugins/find/searchresulttreemodel.cpp

@@ -217,6 +217,9 @@ QVariant SearchResultTreeModel::data(const SearchResultTreeItem *row, int role)
     case ItemDataRoles::SearchTermLengthRole:
         result = row->item.textMarkLength;
         break;
+    case ItemDataRoles::IsGeneratedRole:
+        result = row->isGenerated();
+        break;
 // TODO this looks stupid in case of symbol tree, is it necessary?
 //    case Qt::BackgroundRole:
 //        if (row->parent() && row->parent()->parent())

src/plugins/find/searchresulttreeview.cpp

@@ -46,7 +46,7 @@ SearchResultTreeView::SearchResultTreeView(QWidget *parent)
     setItemDelegate(new SearchResultTreeItemDelegate(this));
     setIndentation(14);
     setUniformRowHeights(true);
-    setExpandsOnDoubleClick(false);
+    setExpandsOnDoubleClick(true);
     header()->hide();
 
     connect(this, SIGNAL(activated(QModelIndex)), this, SLOT(emitJumpToSearchResult(QModelIndex)));
@@ -78,6 +78,8 @@ void SearchResultTreeView::addResults(const QList<Find::SearchResultItem> &items
 
 void SearchResultTreeView::emitJumpToSearchResult(const QModelIndex &index)
 {
+    if (model()->data(index, ItemDataRoles::IsGeneratedRole).toBool())
+        return;
     SearchResultItem item = model()->data(index, ItemDataRoles::ResultItemRole).value<SearchResultItem>();
 
     emit jumpToSearchResult(item);