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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "ui/views/view.h" | 5 #include "ui/views/view.h" |
6 | 6 |
7 #include <stddef.h> | 7 #include <stddef.h> |
8 | 8 |
9 #include <map> | 9 #include <map> |
10 #include <memory> | 10 #include <memory> |
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5016 TEST_F(ViewObserverTest, ChildViewReordered) { | 5016 TEST_F(ViewObserverTest, ChildViewReordered) { |
5017 std::unique_ptr<View> view = NewView(); | 5017 std::unique_ptr<View> view = NewView(); |
5018 std::unique_ptr<View> child_view = NewView(); | 5018 std::unique_ptr<View> child_view = NewView(); |
5019 std::unique_ptr<View> child_view2 = NewView(); | 5019 std::unique_ptr<View> child_view2 = NewView(); |
5020 view->AddChildView(child_view.get()); | 5020 view->AddChildView(child_view.get()); |
5021 view->AddChildView(child_view2.get()); | 5021 view->AddChildView(child_view2.get()); |
5022 view->ReorderChildView(child_view2.get(), 0); | 5022 view->ReorderChildView(child_view2.get(), 0); |
5023 EXPECT_EQ(child_view2.get(), view_reordered()); | 5023 EXPECT_EQ(child_view2.get(), view_reordered()); |
5024 } | 5024 } |
5025 | 5025 |
5026 // Validates that if a child of a ScrollView adds a layer, then a layer | |
5027 // is added to the ScrollView's viewport. | |
5028 TEST_F(ViewObserverTest, ScrollViewChildAddLayerTest) { | |
5029 std::unique_ptr<ScrollView> scroll_view(new ScrollView()); | |
5030 scroll_view->SetContents(new View()); | |
5031 // Bail if the scroll view already has a layer. | |
5032 if (scroll_view->contents_viewport_->layer()) | |
5033 return; | |
5034 | |
5035 EXPECT_FALSE(scroll_view->contents_viewport_->layer()); | |
5036 | |
5037 std::unique_ptr<View> child_view = NewView(); | |
5038 scroll_view->AddChildView(child_view.get()); | |
5039 child_view->SetPaintToLayer(ui::LAYER_TEXTURED); | |
5040 | |
5041 EXPECT_TRUE(scroll_view->contents_viewport_->layer()); | |
5042 scroll_view->RemoveChildView(child_view.get()); | |
5043 } | |
5044 | |
5045 // Provides a simple parent view implementation which tracks layer change | |
5046 // notifications from child views. | |
5047 class TestParentView : public View { | |
5048 public: | |
5049 TestParentView() | |
5050 : received_layer_change_notification_(false), layer_change_count_(0) {} | |
5051 | |
5052 void Reset() { | |
5053 received_layer_change_notification_ = false; | |
5054 layer_change_count_ = 0; | |
5055 } | |
5056 | |
5057 bool received_layer_change_notification() const { | |
5058 return received_layer_change_notification_; | |
5059 } | |
5060 | |
5061 int layer_change_count() const { return layer_change_count_; } | |
5062 | |
5063 // View overrides. | |
5064 void OnChildLayerChanged(View* child) override { | |
5065 received_layer_change_notification_ = true; | |
5066 layer_change_count_++; | |
5067 } | |
5068 | |
5069 private: | |
5070 // Set to true if we receive the OnChildLayerChanged() notification for a | |
5071 // child. | |
5072 bool received_layer_change_notification_; | |
5073 | |
5074 // Contains the number of OnChildLayerChanged() notifications for a child. | |
5075 int layer_change_count_; | |
5076 | |
5077 DISALLOW_COPY_AND_ASSIGN(TestParentView); | |
5078 }; | |
5079 | |
5080 // Tests the following cases. | |
5081 // 1. We receive the OnChildLayerChanged() notification when a layer change | |
5082 // occurs in a child view. | |
5083 // 2. We don't receive two layer changes when a child with an existing layer | |
5084 // creates a new layer. | |
5085 TEST_F(ViewObserverTest, ChildViewLayerNotificationTest) { | |
5086 std::unique_ptr<TestParentView> parent_view(new TestParentView); | |
5087 std::unique_ptr<View> child_view = NewView(); | |
5088 parent_view->AddChildView(child_view.get()); | |
5089 | |
5090 EXPECT_FALSE(parent_view->received_layer_change_notification()); | |
5091 EXPECT_EQ(0, parent_view->layer_change_count()); | |
5092 | |
5093 child_view->SetPaintToLayer(ui::LAYER_TEXTURED); | |
5094 EXPECT_TRUE(parent_view->received_layer_change_notification()); | |
5095 EXPECT_EQ(1, parent_view->layer_change_count()); | |
5096 | |
5097 parent_view->Reset(); | |
5098 child_view->SetPaintToLayer(ui::LAYER_SOLID_COLOR); | |
5099 EXPECT_TRUE(parent_view->received_layer_change_notification()); | |
5100 EXPECT_EQ(1, parent_view->layer_change_count()); | |
5101 } | |
5102 | |
5103 } // namespace views | 5026 } // namespace views |
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