1 files changed, 275 insertions, 0 deletions
diff --git a/chromium/third_party/blink/renderer/core/editing/rendered_position_test.cc b/chromium/third_party/blink/renderer/core/editing/rendered_position_test.cc
new file mode 100644
index 00000000000..152949d80a0
--- /dev/null
+++ b/chromium/third_party/blink/renderer/core/editing/rendered_position_test.cc
@@ -0,0 +1,275 @@
+// Copyright 2017 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 "third_party/blink/renderer/core/editing/rendered_position.h"
+
+#include "build/build_config.h"
+#include "third_party/blink/renderer/core/editing/frame_selection.h"
+#include "third_party/blink/renderer/core/editing/selection_template.h"
+#include "third_party/blink/renderer/core/editing/testing/editing_test_base.h"
+#include "third_party/blink/renderer/core/frame/settings.h"
+#include "third_party/blink/renderer/core/html/forms/html_input_element.h"
+#include "third_party/blink/renderer/core/html/forms/text_control_element.h"
+#include "third_party/blink/renderer/core/layout/layout_box.h"
+#include "third_party/blink/renderer/core/paint/compositing/composited_selection.h"
+#include "third_party/blink/renderer/core/paint/paint_layer_scrollable_area.h"
+#include "third_party/blink/renderer/platform/testing/runtime_enabled_features_test_helpers.h"
+#include "third_party/blink/renderer/platform/testing/use_mock_scrollbar_settings.h"
+
+namespace blink {
+
+class RenderedPositionTest : public testing::WithParamInterface<bool>,
+                             private ScopedRootLayerScrollingForTest,
+                             public EditingTestBase {
+ public:
+  RenderedPositionTest() : ScopedRootLayerScrollingForTest(GetParam()) {}
+  void SetUp() override {
+    EditingTestBase::SetUp();
+    GetPage().GetSettings().SetAcceleratedCompositingEnabled(true);
+    GetDocument().View()->SetParentVisible(true);
+    GetDocument().View()->SetSelfVisible(true);
+    LoadAhem();
+  }
+
+  void FocusAndSelectAll(Element* focus, const Node& select) {
+    DCHECK(focus);
+    focus->focus();
+    Selection().SetSelection(
+        SelectionInDOMTree::Builder().SelectAllChildren(select).Build(),
+        SetSelectionOptions::Builder().SetShouldShowHandle(true).Build());
+    UpdateAllLifecyclePhases();
+  }
+
+  void FocusAndSelectAll(TextControlElement* target) {
+    FocusAndSelectAll(target, *target->InnerEditorElement());
+  }
+
+ private:
+  UseMockScrollbarSettings mock_scrollbars_;
+};
+
+INSTANTIATE_TEST_CASE_P(All, RenderedPositionTest, testing::Bool());
+
+TEST_P(RenderedPositionTest, ComputeCompositedSelection) {
+  SetBodyContent(R"HTML(
+      <!DOCTYPE html>
+      input {
+        font: 10px/1 Ahem;
+        padding: 0;
+        border: 0;
+      }
+      <input id=target width=20 value='test test test test test tes tes test'
+      style='width: 100px; height: 20px;'>
+  )HTML");
+
+  FocusAndSelectAll(ToHTMLInputElement(GetDocument().getElementById("target")));
+
+  const CompositedSelection& composited_selection =
+      RenderedPosition::ComputeCompositedSelection(Selection());
+  EXPECT_FALSE(composited_selection.start.hidden);
+  EXPECT_TRUE(composited_selection.end.hidden);
+}
+
+TEST_P(RenderedPositionTest, PositionInScrollableRoot) {
+  SetBodyContent(R"HTML(
+      <!DOCTYPE html>
+      <style>
+        body {
+           margin: 0;
+           height: 2000px;
+           width: 2000px;
+        }
+        input {
+          font: 10px/1 Ahem;
+          padding: 0;
+          border: 0;
+          width: 100px;
+          height: 20px;
+          position: absolute;
+          top: 900px;
+          left: 1000px;
+        }
+      </style>
+      <input id=target width=20 value='test test test test test tes tes test'>
+  )HTML");
+
+  FocusAndSelectAll(ToHTMLInputElement(GetDocument().getElementById("target")));
+
+  ScrollableArea* root_scroller = GetDocument().View()->GetScrollableArea();
+  root_scroller->SetScrollOffset(ScrollOffset(800, 500), kProgrammaticScroll);
+  ASSERT_EQ(ScrollOffset(800, 500), root_scroller->GetScrollOffset());
+
+  UpdateAllLifecyclePhases();
+
+  const CompositedSelection& composited_selection =
+      RenderedPosition::ComputeCompositedSelection(Selection());
+
+  // Top-left corner should be around (1000, 905) - 10px centered in 20px
+  // height.
+  EXPECT_EQ(FloatPoint(1000, 905),
+            composited_selection.start.edge_top_in_layer);
+  EXPECT_EQ(FloatPoint(1000, 915),
+            composited_selection.start.edge_bottom_in_layer);
+  EXPECT_EQ(FloatPoint(1369, 905), composited_selection.end.edge_top_in_layer);
+  EXPECT_EQ(FloatPoint(1369, 915),
+            composited_selection.end.edge_bottom_in_layer);
+}
+
+TEST_P(RenderedPositionTest, PositionInScroller) {
+  SetBodyContent(R"HTML(
+      <!DOCTYPE html>
+      <style>
+        body {
+           margin: 0;
+           height: 2000px;
+           width: 2000px;
+        }
+        input {
+          font: 10px/1 Ahem;
+          padding: 0;
+          border: 0;
+          width: 100px;
+          height: 20px;
+          position: absolute;
+          top: 900px;
+          left: 1000px;
+        }
+
+        #scroller {
+          width: 300px;
+          height: 300px;
+          position: absolute;
+          left: 300px;
+          top: 400px;
+          overflow: scroll;
+          border: 200px;
+          will-change: transform;
+        }
+
+        #space {
+          width: 2000px;
+          height: 2000px;
+        }
+      </style>
+      <div id="scroller">
+        <div id="space"></div>
+        <input id=target width=20 value='test test test test test tes tes test'>
+      </div>
+  )HTML");
+
+  FocusAndSelectAll(ToHTMLInputElement(GetDocument().getElementById("target")));
+
+  Element* e = GetDocument().getElementById("scroller");
+  PaintLayerScrollableArea* scroller =
+      ToLayoutBox(e->GetLayoutObject())->GetScrollableArea();
+  scroller->SetScrollOffset(ScrollOffset(900, 800), kProgrammaticScroll);
+  ASSERT_EQ(ScrollOffset(900, 800), scroller->GetScrollOffset());
+
+  UpdateAllLifecyclePhases();
+
+  const CompositedSelection& composited_selection =
+      RenderedPosition::ComputeCompositedSelection(Selection());
+
+  // Top-left corner should be around (1000, 905) - 10px centered in 20px
+  // height.
+  EXPECT_EQ(FloatPoint(1000, 905),
+            composited_selection.start.edge_top_in_layer);
+  EXPECT_EQ(FloatPoint(1000, 915),
+            composited_selection.start.edge_bottom_in_layer);
+  EXPECT_EQ(FloatPoint(1369, 905), composited_selection.end.edge_top_in_layer);
+  EXPECT_EQ(FloatPoint(1369, 915),
+            composited_selection.end.edge_bottom_in_layer);
+}
+
+// crbug.com/807930
+TEST_P(RenderedPositionTest, ContentEditableLinebreak) {
+  SetBodyContent(
+      "<div style='font: 10px/10px Ahem;' contenteditable>"
+      "test<br><br></div>");
+  Element* target = GetDocument().QuerySelector("div");
+  FocusAndSelectAll(target, *target);
+  const CompositedSelection& composited_selection =
+      RenderedPosition::ComputeCompositedSelection(Selection());
+  EXPECT_EQ(composited_selection.start.edge_top_in_layer,
+            FloatPoint(8.0f, 8.0f));
+  EXPECT_EQ(composited_selection.start.edge_bottom_in_layer,
+            FloatPoint(8.0f, 18.0f));
+  EXPECT_EQ(composited_selection.end.edge_top_in_layer,
+            FloatPoint(8.0f, 18.0f));
+  EXPECT_EQ(composited_selection.end.edge_bottom_in_layer,
+            FloatPoint(8.0f, 28.0f));
+}
+
+// crbug.com/807930
+TEST_P(RenderedPositionTest, TextAreaLinebreak) {
+  SetBodyContent(
+      "<textarea style='font: 10px/10px Ahem;'>"
+      "test\n</textarea>");
+  FocusAndSelectAll(ToTextControl(GetDocument().QuerySelector("textarea")));
+  const CompositedSelection& composited_selection =
+      RenderedPosition::ComputeCompositedSelection(Selection());
+  EXPECT_EQ(composited_selection.start.edge_top_in_layer,
+            FloatPoint(11.0f, 11.0f));
+  EXPECT_EQ(composited_selection.start.edge_bottom_in_layer,
+            FloatPoint(11.0f, 21.0f));
+  EXPECT_EQ(composited_selection.end.edge_top_in_layer,
+            FloatPoint(11.0f, 21.0f));
+  EXPECT_EQ(composited_selection.end.edge_bottom_in_layer,
+            FloatPoint(11.0f, 31.0f));
+}
+
+// crbug.com/815099
+TEST_P(RenderedPositionTest, CaretBeforeSoftWrap) {
+  SetBodyContent(
+      "<div style='font: 10px/10px Ahem; width:20px;' "
+      "contenteditable>foo</div>");
+  Element* target = GetDocument().QuerySelector("div");
+  target->focus();
+  Node* text_foo = target->firstChild();
+  Selection().SetSelection(
+      SelectionInDOMTree::Builder()
+          .Collapse(
+              PositionWithAffinity({text_foo, 2}, TextAffinity::kUpstream))
+          .Build(),
+      SetSelectionOptions::Builder().SetShouldShowHandle(true).Build());
+  UpdateAllLifecyclePhases();
+  const CompositedSelection& composited_selection =
+      RenderedPosition::ComputeCompositedSelection(Selection());
+  EXPECT_EQ(composited_selection.start.edge_top_in_layer,
+            FloatPoint(27.0f, 8.0f));
+  EXPECT_EQ(composited_selection.start.edge_bottom_in_layer,
+            FloatPoint(27.0f, 18.0f));
+  EXPECT_EQ(composited_selection.end.edge_top_in_layer,
+            FloatPoint(27.0f, 8.0f));
+  EXPECT_EQ(composited_selection.end.edge_bottom_in_layer,
+            FloatPoint(27.0f, 18.0f));
+}
+
+TEST_P(RenderedPositionTest, CaretAfterSoftWrap) {
+  SetBodyContent(
+      "<div style='font: 10px/10px Ahem; width:20px;' "
+      "contenteditable>foo</div>");
+  Element* target = GetDocument().QuerySelector("div");
+  target->focus();
+  Node* text_foo = target->firstChild();
+  Selection().SetSelection(
+      SelectionInDOMTree::Builder()
+          .Collapse(
+              PositionWithAffinity({text_foo, 2}, TextAffinity::kDownstream))
+          .Build(),
+      SetSelectionOptions::Builder().SetShouldShowHandle(true).Build());
+  UpdateAllLifecyclePhases();
+  const CompositedSelection& composited_selection =
+      RenderedPosition::ComputeCompositedSelection(Selection());
+  EXPECT_EQ(composited_selection.start.edge_top_in_layer,
+            FloatPoint(8.0f, 18.0f));
+  EXPECT_EQ(composited_selection.start.edge_bottom_in_layer,
+            FloatPoint(8.0f, 28.0f));
+  EXPECT_EQ(composited_selection.end.edge_top_in_layer,
+            FloatPoint(8.0f, 18.0f));
+  EXPECT_EQ(composited_selection.end.edge_bottom_in_layer,
+            FloatPoint(8.0f, 28.0f));
+}
+
+}  // namespace blink