[Reland] Refactor the selection code in EventHandler

Source/core/input/EventHandlerTest.cpp

-// Copyright 2014 The Chromium Authors. All rights reserved.
+// Copyright 2015 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 "config.h"
-#include "core/layout/LayoutTheme.h"
+#include "core/input/EventHandler.h"
 
-#include "core/dom/NodeComputedStyle.h"
+#include "core/dom/Document.h"
+#include "core/dom/Range.h"
+#include "core/editing/FrameSelection.h"
 #include "core/frame/FrameView.h"
+#include "core/frame/LocalFrame.h"
 #include "core/html/HTMLDocument.h"
-#include "core/html/HTMLElement.h"
-#include "core/page/FocusController.h"
+#include "core/page/AutoscrollController.h"
 #include "core/page/Page.h"
-#include "core/style/ComputedStyle.h"
+#include "core/testing/CoreTestHelpers.h"
 #include "core/testing/DummyPageHolder.h"
-#include "platform/graphics/Color.h"
+#include "platform/PlatformMouseEvent.h"
 #include <gtest/gtest.h>
 
 namespace blink {
 
-class LayoutThemeTest : public ::testing::Test {
+class EventHandlerTest : public ::testing::Test {
 protected:
     void SetUp() override;
-    HTMLDocument& document() const { return *m_document; }
+
+    Page& page() const { return m_dummyPageHolder->page(); }
+    Document& document() const { return m_dummyPageHolder->document(); }
+
     void setHtmlInnerHTML(const char* htmlContent);
 
 private:
     OwnPtr<DummyPageHolder> m_dummyPageHolder;
-    HTMLDocument* m_document;
 };
 
-void LayoutThemeTest::SetUp()
+void EventHandlerTest::SetUp()
 {
-    m_dummyPageHolder = DummyPageHolder::create(IntSize(800, 600));
-    m_document = toHTMLDocument(&m_dummyPageHolder->document());
-    ASSERT(m_document);
+    m_dummyPageHolder = DummyPageHolder::create(IntSize(300, 400));
 }
 
-void LayoutThemeTest::setHtmlInnerHTML(const char* htmlContent)
+void EventHandlerTest::setHtmlInnerHTML(const char* htmlContent)
 {
     document().documentElement()->setInnerHTML(String::fromUTF8(htmlContent), ASSERT_NO_EXCEPTION);
     document().view()->updateLayoutAndStyleForPainting();
 }
 
-inline Color outlineColor(Element* element)
+TEST_F(EventHandlerTest, dragSelectionAfterScroll)
 {
-    return element->computedStyle()->visitedDependentColor(CSSPropertyOutlineColor);
-}
+    setHtmlInnerHTML("<style> body { margin: 0px; } .upper { width: 300px; height: 400px; }"
+        ".lower { margin: 0px; width: 300px; height: 400px; } .line { display: block; width: 300px; height: 30px; } </style>"
+        "<div class=\"upper\"></div>"
+        "<div class=\"lower\">"
+        "<span class=\"line\">Line 1</span><span class=\"line\">Line 2</span><span class=\"line\">Line 3</span><span class=\"line\">Line 4</span><span class=\"line\">Line 5</span>"
+        "<span class=\"line\">Line 6</span><span class=\"line\">Line 7</span><span class=\"line\">Line 8</span><span class=\"line\">Line 9</span><span class=\"line\">Line 10</span>"
+        "</div>");
 
-inline EBorderStyle outlineStyle(Element* element)
-{
-    return element->computedStyle()->outlineStyle();
-}
+    FrameView* frameView = document().view();
+    frameView->scrollTo(DoublePoint(0, 400));
 
-TEST_F(LayoutThemeTest, ChangeFocusRingColor)
-{
-    setHtmlInnerHTML("<span id=span tabIndex=0>Span</span>");
+    PlatformMouseEvent mouseDownEvent(
+        IntPoint(0, 0),
+        IntPoint(100, 200),
+        LeftButton,
+        PlatformEvent::MousePressed,
+        1,
+        static_cast<PlatformEvent::Modifiers>(0),
+        WTF::currentTime());
+    document().frame()->eventHandler().handleMousePressEvent(mouseDownEvent);
 
-    Element* span = document().getElementById(AtomicString("span"));
-    EXPECT_NE(nullptr, span);
-    EXPECT_NE(nullptr, span->layoutObject());
+    PlatformMouseEvent mouseMoveEvent(
+        IntPoint(100, 50),
+        IntPoint(200, 250),
+        LeftButton,
+        PlatformEvent::MouseMoved,
+        1,
+        static_cast<PlatformEvent::Modifiers>(0),
+        WTF::currentTime());
+    document().frame()->eventHandler().handleMouseMoveEvent(mouseMoveEvent);
 
-    Color customColor = makeRGB(123, 145, 167);
+    page().autoscrollController().animate(WTF::currentTime());
+    page().animator().serviceScriptedAnimations(WTF::currentTime());
 
-    // Checking unfocused style.
-    EXPECT_EQ(BNONE, outlineStyle(span));
-    EXPECT_NE(customColor, outlineColor(span));
+    PlatformMouseEvent mouseUpEvent(
+        IntPoint(100, 50),
+        IntPoint(200, 250),
+        LeftButton,
+        PlatformEvent::MouseReleased,
+        1,
+        static_cast<PlatformEvent::Modifiers>(0),
+        WTF::currentTime());
+    document().frame()->eventHandler().handleMouseReleaseEvent(mouseUpEvent);
 
-    // Do focus.
-    document().page()->focusController().setActive(true);
-    document().page()->focusController().setFocused(true);
-    span->focus();
-    document().view()->updateLayoutAndStyleForPainting();
-
-    // Checking focused style.
-    EXPECT_NE(BNONE, outlineStyle(span));
-    EXPECT_NE(customColor, outlineColor(span));
-
-    // Change focus ring color.
-    LayoutTheme::theme().setCustomFocusRingColor(customColor);
-    Page::platformColorsChanged();
-    document().view()->updateLayoutAndStyleForPainting();
-
-    // Check that the focus ring color is updated.
-    EXPECT_NE(BNONE, outlineStyle(span));
-    EXPECT_EQ(customColor, outlineColor(span));
+    FrameSelection& selection = document().frame()->selection();
+    ASSERT_TRUE(selection.isRange());
+    RefPtrWillBeRawPtr<Range> range = selection.toNormalizedRange();
+    ASSERT_TRUE(range.get());
+    EXPECT_EQ("Line 1\nLine 2", range->text());
 }
 
 } // namespace blink