| /* |
| * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
| * (C) 1999 Antti Koivisto (koivisto@kde.org) |
| * Copyright (C) 2004, 2005, 2006, 2007, 2010 Apple Inc. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "third_party/blink/renderer/core/html/html_image_loader.h" |
| |
| #include "third_party/blink/renderer/core/dom/element.h" |
| #include "third_party/blink/renderer/core/dom/events/event.h" |
| #include "third_party/blink/renderer/core/html/forms/html_input_element.h" |
| #include "third_party/blink/renderer/core/html/html_image_element.h" |
| #include "third_party/blink/renderer/core/html/html_object_element.h" |
| #include "third_party/blink/renderer/core/html/parser/html_parser_idioms.h" |
| #include "third_party/blink/renderer/core/loader/resource/image_resource_content.h" |
| #include "third_party/blink/renderer/platform/loader/fetch/resource_loading_log.h" |
| |
| namespace blink { |
| |
| HTMLImageLoader::HTMLImageLoader(Element* element) : ImageLoader(element) {} |
| |
| HTMLImageLoader::~HTMLImageLoader() = default; |
| |
| void HTMLImageLoader::DispatchLoadEvent() { |
| RESOURCE_LOADING_DVLOG(1) << "HTMLImageLoader::dispatchLoadEvent " << this; |
| |
| // HTMLVideoElement uses this class to load the poster image, but it should |
| // not fire events for loading or failure. |
| if (IsA<HTMLVideoElement>(*GetElement())) |
| return; |
| |
| bool error_occurred = GetContent()->ErrorOccurred(); |
| if (IsA<HTMLObjectElement>(*GetElement()) && !error_occurred) { |
| // An <object> considers a 404 to be an error and should fire onerror. |
| error_occurred = (GetContent()->GetResponse().HttpStatusCode() >= 400); |
| } |
| GetElement()->DispatchEvent(*Event::Create( |
| error_occurred ? event_type_names::kError : event_type_names::kLoad)); |
| } |
| |
| void HTMLImageLoader::NoImageResourceToLoad() { |
| // FIXME: Use fallback content even when there is no alt-text. The only |
| // blocker is the large amount of rebaselining it requires. |
| if (To<HTMLElement>(GetElement())->AltText().IsEmpty()) |
| return; |
| |
| if (auto* image = DynamicTo<HTMLImageElement>(GetElement())) |
| image->EnsureCollapsedOrFallbackContent(); |
| else if (auto* input = DynamicTo<HTMLInputElement>(GetElement())) |
| input->EnsureFallbackContent(); |
| } |
| |
| void HTMLImageLoader::ImageNotifyFinished(ImageResourceContent*) { |
| ImageResourceContent* cached_image = GetContent(); |
| Element* element = GetElement(); |
| ImageLoader::ImageNotifyFinished(cached_image); |
| |
| bool load_error = cached_image->ErrorOccurred(); |
| if (auto* image = DynamicTo<HTMLImageElement>(*element)) { |
| if (load_error) { |
| image->EnsureCollapsedOrFallbackContent(); |
| } else { |
| if (cached_image->IsAdResource()) |
| image->SetIsAdRelated(); |
| image->EnsurePrimaryContent(); |
| } |
| } |
| |
| if (auto* input = DynamicTo<HTMLInputElement>(*element)) { |
| if (load_error) |
| input->EnsureFallbackContent(); |
| else |
| input->EnsurePrimaryContent(); |
| } |
| |
| auto* html_image_element = DynamicTo<HTMLObjectElement>(element); |
| if ((load_error || cached_image->GetResponse().HttpStatusCode() >= 400) && |
| html_image_element) |
| html_image_element->RenderFallbackContent(nullptr); |
| } |
| |
| } // namespace blink |