Search results: Open editor on pressing enter on file item

Only do that on enter/return, not on double-click which also expands the
item (we don't want double-click to do both).

Task-number: QTCREATORBUG-18200
Change-Id: Ib4f939a76054832f12b84c8e4353b88e010f1126
Reviewed-by: David Schulz <david.schulz@qt.io>

src/plugins/coreplugin/find/searchresulttreeview.cpp

@@ -78,6 +78,21 @@ void SearchResultTreeView::addResults(const QList<SearchResultItem> &items, Sear
     }
 }
 
+void SearchResultTreeView::keyPressEvent(QKeyEvent *event)
+{
+    if ((event->key() == Qt::Key_Return
+            || event->key() == Qt::Key_Enter)
+            && event->modifiers() == 0
+            && currentIndex().isValid()
+            && state() != QAbstractItemView::EditingState) {
+        const SearchResultItem item
+            = model()->data(currentIndex(), ItemDataRoles::ResultItemRole).value<SearchResultItem>();
+        emit jumpToSearchResult(item);
+        return;
+    }
+    TreeView::keyPressEvent(event);
+}
+
 void SearchResultTreeView::emitJumpToSearchResult(const QModelIndex &index)
 {
     if (model()->data(index, ItemDataRoles::IsGeneratedRole).toBool())

src/plugins/coreplugin/find/searchresulttreeview.h

@@ -49,6 +49,8 @@ public:
     SearchResultTreeModel *model() const;
     void addResults(const QList<SearchResultItem> &items, SearchResult::AddMode mode);
 
+    void keyPressEvent(QKeyEvent *event) override;
+
 signals:
     void jumpToSearchResult(const SearchResultItem &item);