Rework tree APIs to reflect Google style and more const-correctness....

views/debug_utils.cc

+// Copyright (c) 2011 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 "views/debug_utils.h"
+
+#include "base/logging.h"
+#include "base/utf_string_conversions.h"
+#include "views/view.h"
+
+#ifndef NDEBUG
+#include <iostream>
+#endif
+
+namespace views {
+
+#ifndef NDEBUG
+
+namespace {
+void PrintViewHierarchyImp(const View* view, int indent) {
+  std::wostringstream buf;
+  int ind = indent;
+  while (ind-- > 0)
+    buf << L' ';
+  buf << UTF8ToWide(view->GetClassName());
+  buf << L' ';
+  buf << view->GetID();
+  buf << L' ';
+  buf << view->x() << L"," << view->y() << L",";
+  buf << view->bounds().right() << L"," << view->bounds().bottom();
+  buf << L' ';
+  buf << view;
+
+  VLOG(1) << buf.str();
+  std::cout << buf.str() << std::endl;
+
+  for (int i = 0, count = view->child_count(); i < count; ++i)
+    PrintViewHierarchyImp(view->GetChildViewAt(i), indent + 2);
+}
+
+void PrintFocusHierarchyImp(const View* view, int indent) {
+  std::wostringstream buf;
+  int ind = indent;
+  while (ind-- > 0)
+    buf << L' ';
+  buf << UTF8ToWide(view->GetClassName());
+  buf << L' ';
+  buf << view->GetID();
+  buf << L' ';
+  buf << view->GetClassName().c_str();
+  buf << L' ';
+  buf << view;
+
+  VLOG(1) << buf.str();
+  std::cout << buf.str() << std::endl;
+
+  if (view->child_count() > 0)
+    PrintFocusHierarchyImp(view->GetChildViewAt(0), indent + 2);
+
+  const View* next_focusable = view->GetNextFocusableView();
+  if (next_focusable)
+    PrintFocusHierarchyImp(next_focusable, indent);
+}
+}  // namespace
+
+void PrintViewHierarchy(const View* view) {
+  PrintViewHierarchyImp(view, 0);
+}
+
+void PrintFocusHierarchy(const View* view) {
+  PrintFocusHierarchyImp(view, 0);
+}
+
+}  // namespace views
+
+#endif  // NDEBUG