[MDBViz] Switch from a QListView to a QTreeView for the ops

This lets us open & close groups and automates the hierarchy.

Change-Id: Ib6f0850a49b793d824fc25aa16be78e6a1a93d9e
Reviewed-on: https://skia-review.googlesource.com/43280
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/tools/mdbviz/mainwindow.h b/tools/mdbviz/mainwindow.h
index 59e7b98c38..9a7e9dbf09 100644
--- a/tools/mdbviz/mainwindow.h
+++ b/tools/mdbviz/mainwindow.h
@@ -14,8 +14,9 @@
 #include "Model.h"
 
 class QLabel;
-class QListWidget;
 class QMenu;
+class QTreeWidget;
+class QTreeWidgetItem;
 
 
 class MainWindow : public QMainWindow {
@@ -27,7 +28,7 @@ public:
 private slots:
     void openFile();
     void about();
-    void onCurrentRowChanged(int currentRow);
+    void onCurrentItemChanged(QTreeWidgetItem* cur, QTreeWidgetItem* prev);
 
 private:
     void loadFile(const QString &fileName);
@@ -45,7 +46,7 @@ private:
     QImage  fImage;
     QLabel* fImageLabel;
 
-    QListWidget* fOpListWidget;
+    QTreeWidget* fOpListWidget;
 
     QMenu* fViewMenu;