// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "third_party/blink/renderer/core/html/html_picture_element.h"

#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/dom/element_traversal.h"
#include "third_party/blink/renderer/core/frame/web_feature.h"
#include "third_party/blink/renderer/core/html/html_image_element.h"
#include "third_party/blink/renderer/core/html/html_source_element.h"
#include "third_party/blink/renderer/core/html_names.h"
#include "third_party/blink/renderer/core/loader/image_loader.h"
#include "third_party/blink/renderer/platform/instrumentation/use_counter.h"

namespace blink {

HTMLPictureElement::HTMLPictureElement(Document& document)
    : HTMLElement(html_names::kPictureTag, document) {}

void HTMLPictureElement::SourceChanged(ImageSourceChangeType change_type) {
  ImageLoader::UpdateFromElementBehavior update_behavior =
      change_type == ImageSourceChangeType::kMedia
          ? ImageLoader::kUpdateSizeChanged
          : ImageLoader::kUpdateNormal;
  for (HTMLImageElement& image_element :
       Traversal<HTMLImageElement>::ChildrenOf(*this)) {
    image_element.SelectSourceURL(update_behavior);
  }
}

void HTMLPictureElement::SourceDimensionChanged() {
  for (HTMLImageElement& image_element :
       Traversal<HTMLImageElement>::ChildrenOf(*this)) {
    image_element.InvalidateAttributeMapping();
  }
}

void HTMLPictureElement::RemoveListenerFromSourceChildren() {
  for (HTMLSourceElement& source_element :
       Traversal<HTMLSourceElement>::ChildrenOf(*this)) {
    source_element.RemoveMediaQueryListListener();
  }
}

void HTMLPictureElement::AddListenerToSourceChildren() {
  for (HTMLSourceElement& source_element :
       Traversal<HTMLSourceElement>::ChildrenOf(*this)) {
    source_element.AddMediaQueryListListener();
  }
}

Node::InsertionNotificationRequest HTMLPictureElement::InsertedInto(
    ContainerNode& insertion_point) {
  UseCounter::Count(GetDocument(), WebFeature::kPicture);
  return HTMLElement::InsertedInto(insertion_point);
}

}  // namespace blink