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 * Copyright (c) 2013, Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
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 *
 *     * Redistributions of source code must retain the above copyright
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 * in the documentation and/or other materials provided with the
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#include "core/editing/markers/DocumentMarkerController.h"

#include "bindings/core/v8/ExceptionState.h"
#include "core/dom/Document.h"
#include "core/dom/Range.h"
#include "core/dom/Text.h"
#include "core/editing/EphemeralRange.h"
#include "core/editing/markers/RenderedDocumentMarker.h"
#include "core/html/HTMLElement.h"
#include "core/testing/DummyPageHolder.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "wtf/PassRefPtr.h"
#include "wtf/RefPtr.h"
#include <memory>

namespace blink {

class DocumentMarkerControllerTest : public ::testing::Test {
 protected:
  DocumentMarkerControllerTest()
      : m_dummyPageHolder(DummyPageHolder::create(IntSize(800, 600))) {}

  Document& document() const { return m_dummyPageHolder->document(); }
  DocumentMarkerController& markerController() const {
    return document().markers();
  }

  Text* createTextNode(const char*);
  void markNodeContents(Node*);
  void markNodeContentsWithComposition(Node*);
  void setBodyInnerHTML(const char*);

 private:
  std::unique_ptr<DummyPageHolder> m_dummyPageHolder;
};

Text* DocumentMarkerControllerTest::createTextNode(const char* textContents) {
  return document().createTextNode(String::fromUTF8(textContents));
}

void DocumentMarkerControllerTest::markNodeContents(Node* node) {
  // Force layoutObjects to be created; TextIterator, which is used in
  // DocumentMarkerControllerTest::addMarker(), needs them.
  document().updateStyleAndLayout();
  auto range = EphemeralRange::rangeOfContents(*node);
  markerController().addMarker(range.startPosition(), range.endPosition(),
                               DocumentMarker::Spelling);
}

void DocumentMarkerControllerTest::markNodeContentsWithComposition(Node* node) {
  // Force layoutObjects to be created; TextIterator, which is used in
  // DocumentMarkerControllerTest::addMarker(), needs them.
  document().updateStyleAndLayout();
  auto range = EphemeralRange::rangeOfContents(*node);
  markerController().addCompositionMarker(range.startPosition(),
                                          range.endPosition(), Color::black,
                                          false, Color::black);
}

void DocumentMarkerControllerTest::setBodyInnerHTML(const char* bodyContent) {
  document().body()->setInnerHTML(String::fromUTF8(bodyContent));
}

TEST_F(DocumentMarkerControllerTest, DidMoveToNewDocument) {
  setBodyInnerHTML("<b><i>foo</i></b>");
  Element* parent = toElement(document().body()->firstChild()->firstChild());
  markNodeContents(parent);
  EXPECT_EQ(1u, markerController().markers().size());
  Persistent<Document> anotherDocument = Document::create();
  anotherDocument->adoptNode(parent, ASSERT_NO_EXCEPTION);

  // No more reference to marked node.
  ThreadState::current()->collectAllGarbage();
  EXPECT_EQ(0u, markerController().markers().size());
  EXPECT_EQ(0u, anotherDocument->markers().markers().size());
}

TEST_F(DocumentMarkerControllerTest, NodeWillBeRemovedMarkedByNormalize) {
  setBodyInnerHTML("<b><i>foo</i></b>");
  {
    Element* parent = toElement(document().body()->firstChild()->firstChild());
    parent->appendChild(createTextNode("bar"));
    markNodeContents(parent);
    EXPECT_EQ(2u, markerController().markers().size());
    parent->normalize();
  }
  // No more reference to marked node.
  ThreadState::current()->collectAllGarbage();
  EXPECT_EQ(1u, markerController().markers().size());
}

TEST_F(DocumentMarkerControllerTest, NodeWillBeRemovedMarkedByRemoveChildren) {
  setBodyInnerHTML("<b><i>foo</i></b>");
  Element* parent = toElement(document().body()->firstChild()->firstChild());
  markNodeContents(parent);
  EXPECT_EQ(1u, markerController().markers().size());
  parent->removeChildren();
  // No more reference to marked node.
  ThreadState::current()->collectAllGarbage();
  EXPECT_EQ(0u, markerController().markers().size());
}

TEST_F(DocumentMarkerControllerTest, NodeWillBeRemovedByRemoveMarked) {
  setBodyInnerHTML("<b><i>foo</i></b>");
  {
    Element* parent = toElement(document().body()->firstChild()->firstChild());
    markNodeContents(parent);
    EXPECT_EQ(1u, markerController().markers().size());
    parent->removeChild(parent->firstChild());
  }
  // No more reference to marked node.
  ThreadState::current()->collectAllGarbage();
  EXPECT_EQ(0u, markerController().markers().size());
}

TEST_F(DocumentMarkerControllerTest, NodeWillBeRemovedMarkedByRemoveAncestor) {
  setBodyInnerHTML("<b><i>foo</i></b>");
  {
    Element* parent = toElement(document().body()->firstChild()->firstChild());
    markNodeContents(parent);
    EXPECT_EQ(1u, markerController().markers().size());
    parent->parentNode()->parentNode()->removeChild(parent->parentNode());
  }
  // No more reference to marked node.
  ThreadState::current()->collectAllGarbage();
  EXPECT_EQ(0u, markerController().markers().size());
}

TEST_F(DocumentMarkerControllerTest, NodeWillBeRemovedMarkedByRemoveParent) {
  setBodyInnerHTML("<b><i>foo</i></b>");
  {
    Element* parent = toElement(document().body()->firstChild()->firstChild());
    markNodeContents(parent);
    EXPECT_EQ(1u, markerController().markers().size());
    parent->parentNode()->removeChild(parent);
  }
  // No more reference to marked node.
  ThreadState::current()->collectAllGarbage();
  EXPECT_EQ(0u, markerController().markers().size());
}

TEST_F(DocumentMarkerControllerTest, NodeWillBeRemovedMarkedByReplaceChild) {
  setBodyInnerHTML("<b><i>foo</i></b>");
  {
    Element* parent = toElement(document().body()->firstChild()->firstChild());
    markNodeContents(parent);
    EXPECT_EQ(1u, markerController().markers().size());
    parent->replaceChild(createTextNode("bar"), parent->firstChild());
  }
  // No more reference to marked node.
  ThreadState::current()->collectAllGarbage();
  EXPECT_EQ(0u, markerController().markers().size());
}

TEST_F(DocumentMarkerControllerTest, NodeWillBeRemovedBySetInnerHTML) {
  setBodyInnerHTML("<b><i>foo</i></b>");
  {
    Element* parent = toElement(document().body()->firstChild()->firstChild());
    markNodeContents(parent);
    EXPECT_EQ(1u, markerController().markers().size());
    setBodyInnerHTML("");
  }
  // No more reference to marked node.
  ThreadState::current()->collectAllGarbage();
  EXPECT_EQ(0u, markerController().markers().size());
}

TEST_F(DocumentMarkerControllerTest, UpdateRenderedRects) {
  setBodyInnerHTML("<div style='margin: 100px'>foo</div>");
  Element* div = toElement(document().body()->firstChild());
  markNodeContents(div);
  Vector<IntRect> renderedRects =
      markerController().renderedRectsForMarkers(DocumentMarker::Spelling);
  EXPECT_EQ(1u, renderedRects.size());

  div->setAttribute(HTMLNames::styleAttr, "margin: 200px");
  document().updateStyleAndLayout();
  Vector<IntRect> newRenderedRects =
      markerController().renderedRectsForMarkers(DocumentMarker::Spelling);
  EXPECT_EQ(1u, newRenderedRects.size());
  EXPECT_NE(renderedRects[0], newRenderedRects[0]);
}

TEST_F(DocumentMarkerControllerTest, UpdateRenderedRectsForComposition) {
  setBodyInnerHTML("<div style='margin: 100px'>foo</div>");
  Element* div = toElement(document().body()->firstChild());
  markNodeContentsWithComposition(div);
  Vector<IntRect> renderedRects =
      markerController().renderedRectsForMarkers(DocumentMarker::Composition);
  EXPECT_EQ(1u, renderedRects.size());

  div->setAttribute(HTMLNames::styleAttr, "margin: 200px");
  document().updateStyleAndLayout();
  Vector<IntRect> newRenderedRects =
      markerController().renderedRectsForMarkers(DocumentMarker::Composition);
  EXPECT_EQ(1u, newRenderedRects.size());
  EXPECT_NE(renderedRects[0], newRenderedRects[0]);
}

TEST_F(DocumentMarkerControllerTest, CompositionMarkersNotMerged) {
  setBodyInnerHTML("<div style='margin: 100px'>foo</div>");
  Node* text = document().body()->firstChild()->firstChild();
  document().updateStyleAndLayout();
  markerController().addCompositionMarker(Position(text, 0), Position(text, 1),
                                          Color::black, false, Color::black);
  markerController().addCompositionMarker(Position(text, 1), Position(text, 3),
                                          Color::black, true, Color::black);

  EXPECT_EQ(2u, markerController().markers().size());
}

TEST_F(DocumentMarkerControllerTest, SetMarkerActiveTest) {
  setBodyInnerHTML("<b>foo</b>");
  document().updateStyleAndLayout();
  Element* bElement = toElement(document().body()->firstChild());
  EphemeralRange ephemeralRange = EphemeralRange::rangeOfContents(*bElement);
  Position startBElement = toPositionInDOMTree(ephemeralRange.startPosition());
  Position endBElement = toPositionInDOMTree(ephemeralRange.endPosition());
  const EphemeralRange range(startBElement, endBElement);
  // Try to make active a marker that doesn't exist.
  EXPECT_FALSE(markerController().setMarkersActive(range, true));

  // Add a marker and try it once more.
  markerController().addTextMatchMarker(range,
                                        DocumentMarker::MatchStatus::kInactive);
  EXPECT_EQ(1u, markerController().markers().size());
  EXPECT_TRUE(markerController().setMarkersActive(range, true));
}

}  // namespace blink