Make FrameCaret to retrieve caret position from SelectionEditor

third_party/WebKit/Source/core/editing/FrameSelectionTest.cpp

 // 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 "core/editing/FrameSelection.h"
 
 #include "bindings/core/v8/ExceptionStatePlaceholder.h"
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
 #include "core/dom/Text.h"
 #include "core/editing/EditingTestBase.h"
+#include "core/editing/FrameCaret.h"
 #include "core/frame/FrameView.h"
 #include "core/html/HTMLBodyElement.h"
 #include "core/html/HTMLDocument.h"
 #include "core/layout/LayoutView.h"
 #include "core/paint/PaintInfo.h"
 #include "core/paint/PaintLayer.h"
 #include "core/testing/DummyPageHolder.h"
 #include "platform/graphics/paint/DrawingRecorder.h"
 #include "platform/graphics/paint/PaintController.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 10 matching lines @@
     FrameSelection& selection() const;
     const VisibleSelection& visibleSelectionInDOMTree() const { return selection().selection(); }
     const VisibleSelectionInFlatTree& visibleSelectionInFlatTree() const { return selection().selectionInFlatTree(); }
 
     Text* appendTextNode(const String& data);
     int layoutCount() const { return dummyPageHolder().frameView().layoutCount(); }
 
     bool shouldPaintCaretForTesting() const { return selection().shouldPaintCaretForTesting(); }
     bool isPreviousCaretDirtyForTesting() const { return selection().isPreviousCaretDirtyForTesting(); }
 
+    PositionWithAffinity caretPosition() const
+    {
+        return selection().m_frameCaret->caretPosition();
+    }
+
 private:
     Persistent<Text> m_textNode;
 };
 
 void FrameSelectionTest::setSelection(const VisibleSelection& newSelection)
 {
     dummyPageHolder().frame().selection().setSelection(newSelection);
 }
 
 FrameSelection& FrameSelectionTest::selection() const
@@ skipping 214 matching lines @@
 }
 
 TEST_F(FrameSelectionTest, SelectAllWithUnselectableRoot)
 {
     Element* select = document().createElement("select", ASSERT_NO_EXCEPTION);
     document().replaceChild(select, document().documentElement());
     selection().selectAll();
     EXPECT_TRUE(selection().isNone()) << "Nothing should be selected if the content of the documentElement is not selctable.";
 }
 
+TEST_F(FrameSelectionTest, updateIfNeededAndFrameCaret)
+{
+    setBodyContent("<style id=sample></style>");
+    document().setDesignMode("on");
+    Element* sample = document().getElementById("sample");
+    setSelection(VisibleSelection(Position(sample, 0)));

[yoichio, 2016/07/20 09:10:06]

Confirm selection().start() and caretPosition().position() is not null
before and after body is removed.

[yosin_UTC9, 2016/07/20 09:27:33]

Done.

+    document().body()->remove();
+    selection().updateIfNeeded();
+
+    // TODO(yosin): Once lazy canonicalization implemented, selection.start
+    // should be Position(HTML, 0).
+    EXPECT_EQ(Position(), selection().start())
+        << "updateIfNeeded() makes selection to null.";
+    EXPECT_EQ(Position(), caretPosition().position())
+        << "caret position and selection.start should be same.";
+}
+
 } // namespace blink