[WIP] Refactor DocumentMarker

third_party/WebKit/Source/core/editing/markers/DocumentMarker.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 16 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "core/editing/markers/DocumentMarker.h"
 
 #include "wtf/StdLibExtras.h"
 
 namespace blink {
 
-DocumentMarkerDetails::~DocumentMarkerDetails() {}
+DocumentMarker::DocumentMarker(const DocumentMarker& marker)
+    : m_startOffset(marker.startOffset()), m_endOffset(marker.endOffset()) {}
 
-class DocumentMarkerDescription final : public DocumentMarkerDetails {
- public:
-  static DocumentMarkerDescription* create(const String&);
+DocumentMarker::~DocumentMarker() {}
 
-  const String& description() const { return m_description; }
-  bool isDescription() const override { return true; }
-
- private:
-  explicit DocumentMarkerDescription(const String& description)
-      : m_description(description) {}
-
-  String m_description;
-};
-
-DocumentMarkerDescription* DocumentMarkerDescription::create(
-    const String& description) {
-  return new DocumentMarkerDescription(description);
-}
-
-inline DocumentMarkerDescription* toDocumentMarkerDescription(
-    DocumentMarkerDetails* details) {
-  if (details && details->isDescription())
-    return static_cast<DocumentMarkerDescription*>(details);
-  return 0;
-}
-
-class DocumentMarkerTextMatch final : public DocumentMarkerDetails {
- public:
-  static DocumentMarkerTextMatch* create(bool);
-
-  bool activeMatch() const { return m_match; }
-  bool isTextMatch() const override { return true; }
-
- private:
-  explicit DocumentMarkerTextMatch(bool match) : m_match(match) {}
-
-  bool m_match;
-};
-
-DocumentMarkerTextMatch* DocumentMarkerTextMatch::create(bool match) {
-  DEFINE_STATIC_LOCAL(DocumentMarkerTextMatch, trueInstance,
-                      (new DocumentMarkerTextMatch(true)));
-  DEFINE_STATIC_LOCAL(DocumentMarkerTextMatch, falseInstance,
-                      (new DocumentMarkerTextMatch(false)));
-  return match ? &trueInstance : &falseInstance;
-}
-
-inline DocumentMarkerTextMatch* toDocumentMarkerTextMatch(
-    DocumentMarkerDetails* details) {
-  if (details && details->isTextMatch())
-    return static_cast<DocumentMarkerTextMatch*>(details);
-  return 0;
-}
-
-class TextCompositionMarkerDetails final : public DocumentMarkerDetails {
- public:
-  static TextCompositionMarkerDetails* create(Color underlineColor,
-                                              bool thick,
-                                              Color backgroundColor);
-
-  bool isComposition() const override { return true; }
-  Color underlineColor() const { return m_underlineColor; }
-  bool thick() const { return m_thick; }
-  Color backgroundColor() const { return m_backgroundColor; }
-
- private:
-  TextCompositionMarkerDetails(Color underlineColor,
-                               bool thick,
-                               Color backgroundColor)
-      : m_underlineColor(underlineColor),
-        m_backgroundColor(backgroundColor),
-        m_thick(thick) {}
-
-  Color m_underlineColor;
-  Color m_backgroundColor;
-  bool m_thick;
-};
-
-TextCompositionMarkerDetails* TextCompositionMarkerDetails::create(
-    Color underlineColor,
-    bool thick,
-    Color backgroundColor) {
-  return new TextCompositionMarkerDetails(underlineColor, thick,
-                                          backgroundColor);
-}
-
-inline TextCompositionMarkerDetails* toTextCompositionMarkerDetails(
-    DocumentMarkerDetails* details) {
-  if (details && details->isComposition())
-    return static_cast<TextCompositionMarkerDetails*>(details);
-  return nullptr;
-}
-
-DocumentMarker* DocumentMarker::clone() const {
-  return new DocumentMarker(*this);
-}
-
-DocumentMarker::DocumentMarker(MarkerType type,
-                               unsigned startOffset,
-                               unsigned endOffset,
-                               const String& description)
-    : m_type(type),
-      m_startOffset(startOffset),
-      m_endOffset(endOffset),
-      m_details(description.isEmpty()
-                    ? nullptr
-                    : DocumentMarkerDescription::create(description)) {
-  DCHECK(type != DocumentMarker::TextMatch);
-}
-
-DocumentMarker::DocumentMarker(unsigned startOffset,
-                               unsigned endOffset,
-                               bool activeMatch)
-    : m_type(DocumentMarker::TextMatch),
-      m_startOffset(startOffset),
-      m_endOffset(endOffset),
-      m_details(DocumentMarkerTextMatch::create(activeMatch)) {}
-
-DocumentMarker::DocumentMarker(unsigned startOffset,
-                               unsigned endOffset,
-                               Color underlineColor,
-                               bool thick,
-                               Color backgroundColor)
-    : m_type(DocumentMarker::Composition),
-      m_startOffset(startOffset),
-      m_endOffset(endOffset),
-      m_details(TextCompositionMarkerDetails::create(underlineColor,
-                                                     thick,
-                                                     backgroundColor)) {}
-
-DocumentMarker::DocumentMarker(const DocumentMarker& marker)
-    : m_type(marker.type()),
-      m_startOffset(marker.startOffset()),
-      m_endOffset(marker.endOffset()),
-      m_details(marker.details()) {}
+DocumentMarker::DocumentMarker(unsigned startOffset, unsigned endOffset)
+    : m_startOffset(startOffset), m_endOffset(endOffset) {}
 
 Optional<DocumentMarker::MarkerOffsets>
 DocumentMarker::computeOffsetsAfterShift(unsigned offset,
                                          unsigned oldLength,
                                          unsigned newLength) const {
   MarkerOffsets result;
   result.startOffset = startOffset();
   result.endOffset = endOffset();
 
   // algorithm inspired by https://dom.spec.whatwg.org/#concept-cd-replace
@@ skipping 32 matching lines @@
     return WTF::nullopt;
 
   return result;
 }
 
 void DocumentMarker::shiftOffsets(int delta) {
   m_startOffset += delta;
   m_endOffset += delta;
 }
 
-void DocumentMarker::setActiveMatch(bool active) {
-  m_details = DocumentMarkerTextMatch::create(active);
-}
-
 const String& DocumentMarker::description() const {
-  if (DocumentMarkerDescription* details =
-          toDocumentMarkerDescription(m_details.get()))
-    return details->description();
   return emptyString;
 }
 
 bool DocumentMarker::activeMatch() const {
-  if (DocumentMarkerTextMatch* details =
-          toDocumentMarkerTextMatch(m_details.get()))
-    return details->activeMatch();
   return false;
 }
 
 Color DocumentMarker::underlineColor() const {
-  if (TextCompositionMarkerDetails* details =
-          toTextCompositionMarkerDetails(m_details.get()))
-    return details->underlineColor();
   return Color::transparent;
 }
 
 bool DocumentMarker::thick() const {
-  if (TextCompositionMarkerDetails* details =
-          toTextCompositionMarkerDetails(m_details.get()))
-    return details->thick();
   return false;
 }
 
 Color DocumentMarker::backgroundColor() const {
-  if (TextCompositionMarkerDetails* details =
-          toTextCompositionMarkerDetails(m_details.get()))
-    return details->backgroundColor();
   return Color::transparent;
 }
 
-DEFINE_TRACE(DocumentMarker) {
-  visitor->trace(m_details);
-}
-
 }  // namespace blink