// Copyright 2015 The Cobalt Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "cobalt/cssom/radial_gradient_value.h"

#include "base/strings/stringprintf.h"
#include "cobalt/cssom/keyword_names.h"
#include "cobalt/cssom/property_value_visitor.h"

namespace cobalt {
namespace cssom {

void RadialGradientValue::Accept(PropertyValueVisitor* visitor) {
  visitor->VisitRadialGradient(this);
}

std::string RadialGradientValue::ToString() const {
  std::string result;
  switch (shape_) {
    case kCircle:
      result.append(kCircleKeywordName);
      break;
    case kEllipse:
      result.append(kEllipseKeywordName);
      break;
  }

  if (size_keyword_) {
    result.push_back(' ');
    switch (size_keyword_.value()) {
      case kClosestSide:
        result.append(kClosestSideKeywordName);
        break;
      case kFarthestSide:
        result.append(kFarthestSideKeywordName);
        break;
      case kClosestCorner:
        result.append(kClosestCornerKeywordName);
        break;
      case kFarthestCorner:
        result.append(kFarthestCornerKeywordName);
        break;
    }
  } else if (size_value_) {
    result.push_back(' ');
    result.append(size_value_->ToString());
  }

  if (position_) {
    result.push_back(' ');
    result.append(kAtKeywordName);
    for (size_t i = 0; i < position_->value().size(); ++i) {
      result.push_back(' ');
      result.append(position_->value()[i]->ToString());
    }
  }

  for (size_t i = 0; i < color_stop_list_.size(); ++i) {
    if (!result.empty()) result.append(", ");
    result.append(color_stop_list_[i]->ToString());
  }
  return result;
}

bool RadialGradientValue::operator==(const RadialGradientValue& other) const {
  // shape must the same.
  if (shape_ != other.shape_) {
    return false;
  }

  // The optionals must match.
  if (!size_keyword_ != !other.size_keyword_) {
    return false;
  }
  if (size_keyword_) {
    if (!(*size_keyword_ == *other.size_keyword_)) {
      return false;
    }
  }

  if (!size_value_ != !other.size_value_) {
    return false;
  }
  if (size_value_) {
    if (!(*size_value_ == *other.size_value_)) {
      return false;
    }
  }

  if (!position_ != !other.position_) {
    return false;
  }
  if (position_ && !(*position_ == *other.position_)) {
    return false;
  }

  // The stop lists must be equal.
  return ColorStopListsEqual(color_stop_list_, other.color_stop_list_);
}

}  // namespace cssom
}  // namespace cobalt