Fixed crash when a SinglesplitView gets embdedded inside SingleSplitView

views/examples/double_split_view_example.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/examples/double_split_view_example.h"
+
+#include "views/controls/single_split_view.h"
+#include "views/layout/grid_layout.h"
+
+namespace {
+
+// DoubleSplitViews's content, which draws gradient color on background.
+class SplittedView : public views::View {
+ public:
+  SplittedView();
+  virtual ~SplittedView();
+
+  void SetColor(SkColor from, SkColor to);
+
+  // Overridden from views::View.
+  virtual gfx::Size GetPreferredSize() OVERRIDE;
+  virtual gfx::Size GetMinimumSize() OVERRIDE;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(SplittedView);
+};
+
+SplittedView::SplittedView() {
+  SetColor(SK_ColorRED, SK_ColorGREEN);
+}
+
+SplittedView::~SplittedView() {
+}
+
+void SplittedView::SetColor(SkColor from, SkColor to) {
+  set_background(
+      views::Background::CreateVerticalGradientBackground(from, to));
+}
+
+gfx::Size SplittedView::GetPreferredSize() {
+  return gfx::Size(width(), height());
+}
+
+gfx::Size SplittedView::GetMinimumSize() {
+  return gfx::Size(10, 10);
+}
+
+}  // namespace
+
+namespace examples {
+
+DoubleSplitViewExample::DoubleSplitViewExample(ExamplesMain* main)
+    : ExampleBase(main) {
+}
+
+DoubleSplitViewExample::~DoubleSplitViewExample() {
+}
+
+std::wstring DoubleSplitViewExample::GetExampleTitle() {
+  return L"Double Split View";
+}
+
+void DoubleSplitViewExample::CreateExampleView(views::View* container) {
+  SplittedView* splitted_view_1 = new SplittedView();
+  SplittedView* splitted_view_2 = new SplittedView();
+  SplittedView* splitted_view_3 = new SplittedView();
+
+  inner_single_split_view_ = new views::SingleSplitView(
+      splitted_view_1, splitted_view_2,
+      views::SingleSplitView::HORIZONTAL_SPLIT,
+      NULL);
+
+  outer_single_split_view_ = new views::SingleSplitView(
+      inner_single_split_view_, splitted_view_3,
+      views::SingleSplitView::HORIZONTAL_SPLIT,
+      NULL);
+
+  views::GridLayout* layout = new views::GridLayout(container);
+  container->SetLayoutManager(layout);
+
+  // Add scroll view.
+  views::ColumnSet* column_set = layout->AddColumnSet(0);
+  column_set->AddColumn(views::GridLayout::FILL, views::GridLayout::FILL, 1,
+                        views::GridLayout::USE_PREF, 0, 0);
+  layout->StartRow(1, 0);
+  layout->AddView(outer_single_split_view_);
+}
+
+}  // namespace examples