Wrap the task manager treeview in a GtkScrolledWindow in order to have a fram...

chrome/browser/gtk/task_manager_gtk.cc

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/gtk/task_manager_gtk.h"
 
 #include <vector>
 
 #include "app/l10n_util.h"
 #include "base/gfx/gtk_util.h"
@@ skipping 303 matching lines @@
 
   gtk_box_set_spacing(GTK_BOX(GTK_DIALOG(dialog_)->vbox),
                       gtk_util::kContentAreaSpacing);
 
   g_signal_connect(G_OBJECT(dialog_), "response", G_CALLBACK(OnResponse), this);
   g_signal_connect(G_OBJECT(dialog_), "button-release-event",
                    G_CALLBACK(OnButtonReleaseEvent), this);
   gtk_widget_add_events(dialog_,
                         GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK);
 
+  // Wrap the treeview widget in a scrolled window in order to have a frame.
+  GtkWidget* scrolled = gtk_scrolled_window_new(NULL, NULL);
+  gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scrolled),
+                                      GTK_SHADOW_ETCHED_IN);
+  gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolled),
+      GTK_POLICY_NEVER, GTK_POLICY_NEVER);
+  gtk_container_add(GTK_CONTAINER(GTK_DIALOG(dialog_)->vbox), scrolled);
+
   CreateTaskManagerTreeview();
   gtk_tree_view_set_headers_clickable(GTK_TREE_VIEW(treeview_), TRUE);
   gtk_tree_view_set_grid_lines(GTK_TREE_VIEW(treeview_),
                                GTK_TREE_VIEW_GRID_LINES_HORIZONTAL);
   g_signal_connect(G_OBJECT(treeview_), "button-press-event",
                    G_CALLBACK(OnButtonPressEvent), this);
   g_signal_connect(G_OBJECT(treeview_), "button-release-event",
                    G_CALLBACK(OnButtonReleaseEvent), this);
   gtk_widget_add_events(treeview_,
                         GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK);
 
   // Hide some columns by default
   TreeViewColumnSetVisible(treeview_, kTaskManagerSharedMem, false);
   TreeViewColumnSetVisible(treeview_, kTaskManagerPrivateMem, false);
   TreeViewColumnSetVisible(treeview_, kTaskManagerProcessID, false);
   TreeViewColumnSetVisible(treeview_, kTaskManagerGoatsTeleported, false);
 
   // |selection| is owned by |treeview_|.
   GtkTreeSelection* selection = gtk_tree_view_get_selection(
       GTK_TREE_VIEW(treeview_));
   gtk_tree_selection_set_mode(selection, GTK_SELECTION_MULTIPLE);
   g_signal_connect(G_OBJECT(selection), "changed",
                    G_CALLBACK(OnSelectionChanged), this);
 
-  gtk_container_add(GTK_CONTAINER(GTK_DIALOG(dialog_)->vbox), treeview_);
+  gtk_container_add(GTK_CONTAINER(scrolled), treeview_);
 
   gtk_window_resize(GTK_WINDOW(dialog_), kDefaultWidth, kDefaultHeight);
   gtk_widget_show_all(dialog_);
 
   model_->SetObserver(this);
 }
 
 void TaskManagerGtk::CreateTaskManagerTreeview() {
   treeview_ = gtk_tree_view_new();
 
@@ skipping 169 matching lines @@
                                               TaskManagerGtk* task_manager) {
   // We don't want to open the context menu in the treeview.
   if (widget == task_manager->treeview_)
     return TRUE;
 
   if (event->button == 3)
     task_manager->ShowContextMenu();
 
   return FALSE;
 }