MacViews: Split out ViewTest.RecreateLayers from view_unittest.cc

ui/views/view_unittest_aura.cc

+// Copyright 2014 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 "ui/views/view.h"
+
+#include "base/memory/scoped_ptr.h"
+#include "ui/aura/window.h"
+#include "ui/compositor/layer.h"
+#include "ui/compositor/layer_tree_owner.h"
+#include "ui/compositor/test/test_layers.h"
+#include "ui/gfx/geometry/rect.h"
+#include "ui/views/test/views_test_base.h"
+#include "ui/views/view_constants_aura.h"
+#include "ui/views/widget/widget.h"
+#include "ui/wm/core/window_util.h"
+
+namespace views {
+
+namespace {
+
+// Creates a widget of TYPE_CONTROL.
+// The caller takes ownership of the returned widget.
+Widget* CreateControlWidget(aura::Window* parent, const gfx::Rect& bounds) {
+  Widget::InitParams params(Widget::InitParams::TYPE_CONTROL);
+  params.parent = parent;
+  params.bounds = bounds;
+  Widget* widget = new Widget();
+  widget->Init(params);
+  return widget;
+}
+
+// Returns a view with a layer with the passed in |bounds| and |layer_name|.
+// The caller takes ownership of the returned view.
+View* CreateViewWithLayer(const gfx::Rect& bounds, const char* layer_name) {
+  View* view = new View();
+  view->SetBoundsRect(bounds);
+  view->SetPaintToLayer(true);
+  view->layer()->set_name(layer_name);
+  return view;
+}
+
+}  // namespace
+
+typedef ViewsTestBase ViewAuraTest;
+
+// Test that wm::RecreateLayers() recreates the layers for all child windows and
+// all child views and that the z-order of the recreated layers matches that of
+// the original layers.
+// Test hierarchy:
+// w1
+// +-- v1
+// +-- v2 (no layer)
+//     +-- v3 (no layer)
+//     +-- v4
+// +-- w2
+//     +-- v5
+//         +-- v6
+// +-- v7
+//     +-- v8
+//     +-- v9
+TEST_F(ViewAuraTest, RecreateLayersWithWindows) {
+  Widget* w1 = CreateControlWidget(GetContext(), gfx::Rect(0, 0, 100, 100));
+  w1->GetNativeView()->layer()->set_name("w1");
+
+  View* v2 = new View();
+  v2->SetBounds(0, 1, 100, 101);
+  View* v3 = new View();
+  v3->SetBounds(0, 2, 100, 102);
+  View* w2_host_view = new View();
+
+  View* v1 = CreateViewWithLayer(gfx::Rect(0, 3, 100, 103), "v1");
+  ui::Layer* v1_layer = v1->layer();
+  w1->GetRootView()->AddChildView(v1);
+  w1->GetRootView()->AddChildView(v2);
+  v2->AddChildView(v3);
+  View* v4 = CreateViewWithLayer(gfx::Rect(0, 4, 100, 104), "v4");
+  ui::Layer* v4_layer = v4->layer();
+  v2->AddChildView(v4);
+
+  w1->GetRootView()->AddChildView(w2_host_view);
+  View* v7 = CreateViewWithLayer(gfx::Rect(0, 4, 100, 104), "v7");
+  ui::Layer* v7_layer = v7->layer();
+  w1->GetRootView()->AddChildView(v7);
+
+  View* v8 = CreateViewWithLayer(gfx::Rect(0, 4, 100, 104), "v8");
+  ui::Layer* v8_layer = v8->layer();
+  v7->AddChildView(v8);
+
+  View* v9 = CreateViewWithLayer(gfx::Rect(0, 4, 100, 104), "v9");
+  ui::Layer* v9_layer = v9->layer();
+  v7->AddChildView(v9);
+
+  Widget* w2 =
+      CreateControlWidget(w1->GetNativeView(), gfx::Rect(0, 5, 100, 105));
+  w2->GetNativeView()->layer()->set_name("w2");
+  w2->GetNativeView()->SetProperty(kHostViewKey, w2_host_view);
+
+  View* v5 = CreateViewWithLayer(gfx::Rect(0, 6, 100, 106), "v5");
+  w2->GetRootView()->AddChildView(v5);
+  View* v6 = CreateViewWithLayer(gfx::Rect(0, 7, 100, 107), "v6");
+  ui::Layer* v6_layer = v6->layer();
+  v5->AddChildView(v6);
+
+  // Test the initial order of the layers.
+  ui::Layer* w1_layer = w1->GetNativeView()->layer();
+  ASSERT_EQ("w1", w1_layer->name());
+  ASSERT_EQ("v1 v4 w2 v7", ui::test::ChildLayerNamesAsString(*w1_layer));
+  ui::Layer* w2_layer = w1_layer->children()[2];
+  ASSERT_EQ("v5", ui::test::ChildLayerNamesAsString(*w2_layer));
+  ui::Layer* v5_layer = w2_layer->children()[0];
+  ASSERT_EQ("v6", ui::test::ChildLayerNamesAsString(*v5_layer));
+
+  {
+    scoped_ptr<ui::LayerTreeOwner> cloned_owner(
+        wm::RecreateLayers(w1->GetNativeView()));
+    EXPECT_EQ(w1_layer, cloned_owner->root());
+    EXPECT_NE(w1_layer, w1->GetNativeView()->layer());
+
+    // The old layers should still exist and have the same hierarchy.
+    ASSERT_EQ("w1", w1_layer->name());
+    ASSERT_EQ("v1 v4 w2 v7", ui::test::ChildLayerNamesAsString(*w1_layer));
+    ASSERT_EQ("v5", ui::test::ChildLayerNamesAsString(*w2_layer));
+    ASSERT_EQ("v6", ui::test::ChildLayerNamesAsString(*v5_layer));
+    EXPECT_EQ("v8 v9", ui::test::ChildLayerNamesAsString(*v7_layer));
+
+    ASSERT_EQ(4u, w1_layer->children().size());
+    EXPECT_EQ(v1_layer, w1_layer->children()[0]);
+    EXPECT_EQ(v4_layer, w1_layer->children()[1]);
+    EXPECT_EQ(w2_layer, w1_layer->children()[2]);
+    EXPECT_EQ(v7_layer, w1_layer->children()[3]);
+
+    ASSERT_EQ(1u, w2_layer->children().size());
+    EXPECT_EQ(v5_layer, w2_layer->children()[0]);
+
+    ASSERT_EQ(1u, v5_layer->children().size());
+    EXPECT_EQ(v6_layer, v5_layer->children()[0]);
+
+    ASSERT_EQ(0u, v6_layer->children().size());
+
+    EXPECT_EQ(2u, v7_layer->children().size());
+    EXPECT_EQ(v8_layer, v7_layer->children()[0]);
+    EXPECT_EQ(v9_layer, v7_layer->children()[1]);
+
+    // The cloned layers should have the same hierarchy as old.
+    ui::Layer* w1_new_layer = w1->GetNativeView()->layer();
+    EXPECT_EQ("w1", w1_new_layer->name());
+    ASSERT_EQ("v1 v4 w2 v7", ui::test::ChildLayerNamesAsString(*w1_new_layer));
+    ui::Layer* w2_new_layer = w1_new_layer->children()[2];
+    ASSERT_EQ("v5", ui::test::ChildLayerNamesAsString(*w2_new_layer));
+    ui::Layer* v5_new_layer = w2_new_layer->children()[0];
+    ASSERT_EQ("v6", ui::test::ChildLayerNamesAsString(*v5_new_layer));
+    ui::Layer* v7_new_layer = w1_new_layer->children()[3];
+    ASSERT_EQ("v8 v9", ui::test::ChildLayerNamesAsString(*v7_new_layer));
+  }
+  // The views and the widgets are destroyed when AuraTestHelper::TearDown()
+  // destroys root_window().
+}
+
+}  // namespace views