| /* |
| * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All |
| * rights reserved. |
| * Copyright (C) 2010 Google Inc. All rights reserved. |
| * Copyright (C) 2012 Samsung Electronics. 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/forms/image_input_type.h" |
| |
| #include "third_party/blink/renderer/core/css/style_change_reason.h" |
| #include "third_party/blink/renderer/core/dom/shadow_root.h" |
| #include "third_party/blink/renderer/core/events/mouse_event.h" |
| #include "third_party/blink/renderer/core/frame/web_feature.h" |
| #include "third_party/blink/renderer/core/html/forms/form_data.h" |
| #include "third_party/blink/renderer/core/html/forms/html_form_element.h" |
| #include "third_party/blink/renderer/core/html/forms/html_input_element.h" |
| #include "third_party/blink/renderer/core/html/html_image_fallback_helper.h" |
| #include "third_party/blink/renderer/core/html/html_image_loader.h" |
| #include "third_party/blink/renderer/core/html/parser/html_parser_idioms.h" |
| #include "third_party/blink/renderer/core/html_names.h" |
| #include "third_party/blink/renderer/core/input_type_names.h" |
| #include "third_party/blink/renderer/core/layout/adjust_for_absolute_zoom.h" |
| #include "third_party/blink/renderer/core/layout/layout_block_flow.h" |
| #include "third_party/blink/renderer/core/layout/layout_image.h" |
| #include "third_party/blink/renderer/core/layout/layout_object_factory.h" |
| #include "third_party/blink/renderer/platform/wtf/text/string_builder.h" |
| |
| namespace blink { |
| |
| ImageInputType::ImageInputType(HTMLInputElement& element) |
| : BaseButtonInputType(element), use_fallback_content_(false) {} |
| |
| void ImageInputType::CountUsage() { |
| CountUsageIfVisible(WebFeature::kInputTypeImage); |
| } |
| |
| const AtomicString& ImageInputType::FormControlType() const { |
| return input_type_names::kImage; |
| } |
| |
| bool ImageInputType::IsFormDataAppendable() const { |
| return true; |
| } |
| |
| void ImageInputType::AppendToFormData(FormData& form_data) const { |
| if (!GetElement().IsActivatedSubmit()) |
| return; |
| const AtomicString& name = GetElement().GetName(); |
| if (name.IsEmpty()) { |
| form_data.AppendFromElement("x", click_location_.X()); |
| form_data.AppendFromElement("y", click_location_.Y()); |
| return; |
| } |
| |
| DEFINE_STATIC_LOCAL(String, dot_x_string, (".x")); |
| DEFINE_STATIC_LOCAL(String, dot_y_string, (".y")); |
| form_data.AppendFromElement(name + dot_x_string, click_location_.X()); |
| form_data.AppendFromElement(name + dot_y_string, click_location_.Y()); |
| } |
| |
| String ImageInputType::ResultForDialogSubmit() const { |
| StringBuilder result; |
| result.AppendNumber(click_location_.X()); |
| result.Append(','); |
| result.AppendNumber(click_location_.Y()); |
| return result.ToString(); |
| } |
| |
| bool ImageInputType::SupportsValidation() const { |
| return false; |
| } |
| |
| static IntPoint ExtractClickLocation(const Event& event) { |
| if (!event.UnderlyingEvent() || !event.UnderlyingEvent()->IsMouseEvent()) |
| return IntPoint(); |
| auto& mouse_event = *ToMouseEvent(event.UnderlyingEvent()); |
| if (!mouse_event.HasPosition()) |
| return IntPoint(); |
| return IntPoint(mouse_event.offsetX(), mouse_event.offsetY()); |
| } |
| |
| void ImageInputType::HandleDOMActivateEvent(Event& event) { |
| if (GetElement().IsDisabledFormControl() || !GetElement().Form()) |
| return; |
| click_location_ = ExtractClickLocation(event); |
| // Event handlers can run. |
| GetElement().Form()->PrepareForSubmission(&event, &GetElement()); |
| event.SetDefaultHandled(); |
| } |
| |
| LayoutObject* ImageInputType::CreateLayoutObject(const ComputedStyle& style, |
| LegacyLayout legacy) const { |
| if (use_fallback_content_) |
| return LayoutObjectFactory::CreateBlockFlow(GetElement(), style, legacy); |
| LayoutImage* image = new LayoutImage(&GetElement()); |
| image->SetImageResource(MakeGarbageCollected<LayoutImageResource>()); |
| return image; |
| } |
| |
| void ImageInputType::AltAttributeChanged() { |
| if (GetElement().UserAgentShadowRoot()) { |
| Element* text = |
| GetElement().UserAgentShadowRoot()->getElementById("alttext"); |
| String value = GetElement().AltText(); |
| if (text && text->textContent() != value) |
| text->setTextContent(GetElement().AltText()); |
| } |
| } |
| |
| void ImageInputType::SrcAttributeChanged() { |
| if (!GetElement().GetLayoutObject()) |
| return; |
| GetElement().EnsureImageLoader().UpdateFromElement( |
| ImageLoader::kUpdateIgnorePreviousError); |
| } |
| |
| void ImageInputType::ValueAttributeChanged() { |
| if (use_fallback_content_) |
| return; |
| BaseButtonInputType::ValueAttributeChanged(); |
| } |
| |
| void ImageInputType::StartResourceLoading() { |
| BaseButtonInputType::StartResourceLoading(); |
| |
| HTMLImageLoader& image_loader = GetElement().EnsureImageLoader(); |
| image_loader.UpdateFromElement(); |
| } |
| |
| void ImageInputType::OnAttachWithLayoutObject() { |
| LayoutObject* layout_object = GetElement().GetLayoutObject(); |
| DCHECK(layout_object); |
| if (!layout_object->IsLayoutImage()) |
| return; |
| |
| HTMLImageLoader& image_loader = GetElement().EnsureImageLoader(); |
| LayoutImageResource* image_resource = |
| ToLayoutImage(layout_object)->ImageResource(); |
| image_resource->SetImageResource(image_loader.GetContent()); |
| } |
| |
| bool ImageInputType::ShouldRespectAlignAttribute() { |
| return true; |
| } |
| |
| bool ImageInputType::CanBeSuccessfulSubmitButton() { |
| return true; |
| } |
| |
| bool ImageInputType::IsEnumeratable() { |
| return false; |
| } |
| |
| bool ImageInputType::ShouldRespectHeightAndWidthAttributes() { |
| return true; |
| } |
| |
| unsigned ImageInputType::Height() const { |
| if (!GetElement().GetLayoutObject()) { |
| // Check the attribute first for an explicit pixel value. |
| unsigned height; |
| if (ParseHTMLNonNegativeInteger( |
| GetElement().FastGetAttribute(html_names::kHeightAttr), height)) |
| return height; |
| |
| // If the image is available, use its height. |
| HTMLImageLoader* image_loader = GetElement().ImageLoader(); |
| if (image_loader && image_loader->GetContent()) { |
| return image_loader->GetContent() |
| ->IntrinsicSize(LayoutObject::ShouldRespectImageOrientation(nullptr)) |
| .Height(); |
| } |
| } |
| |
| GetElement().GetDocument().UpdateStyleAndLayout(); |
| |
| LayoutBox* box = GetElement().GetLayoutBox(); |
| return box ? AdjustForAbsoluteZoom::AdjustInt(box->ContentHeight().ToInt(), |
| box) |
| : 0; |
| } |
| |
| unsigned ImageInputType::Width() const { |
| if (!GetElement().GetLayoutObject()) { |
| // Check the attribute first for an explicit pixel value. |
| unsigned width; |
| if (ParseHTMLNonNegativeInteger( |
| GetElement().FastGetAttribute(html_names::kWidthAttr), width)) |
| return width; |
| |
| // If the image is available, use its width. |
| HTMLImageLoader* image_loader = GetElement().ImageLoader(); |
| if (image_loader && image_loader->GetContent()) { |
| return image_loader->GetContent() |
| ->IntrinsicSize(LayoutObject::ShouldRespectImageOrientation(nullptr)) |
| .Width(); |
| } |
| } |
| |
| GetElement().GetDocument().UpdateStyleAndLayout(); |
| |
| LayoutBox* box = GetElement().GetLayoutBox(); |
| return box ? AdjustForAbsoluteZoom::AdjustInt(box->ContentWidth().ToInt(), |
| box) |
| : 0; |
| } |
| |
| bool ImageInputType::HasLegalLinkAttribute(const QualifiedName& name) const { |
| return name == html_names::kSrcAttr || |
| BaseButtonInputType::HasLegalLinkAttribute(name); |
| } |
| |
| const QualifiedName& ImageInputType::SubResourceAttributeName() const { |
| return html_names::kSrcAttr; |
| } |
| |
| void ImageInputType::EnsureFallbackContent() { |
| if (use_fallback_content_) |
| return; |
| SetUseFallbackContent(); |
| ReattachFallbackContent(); |
| } |
| |
| void ImageInputType::SetUseFallbackContent() { |
| if (use_fallback_content_) |
| return; |
| use_fallback_content_ = true; |
| if (GetElement().GetDocument().InStyleRecalc()) |
| return; |
| if (ShadowRoot* root = GetElement().UserAgentShadowRoot()) |
| root->RemoveChildren(); |
| CreateShadowSubtree(); |
| } |
| |
| void ImageInputType::EnsurePrimaryContent() { |
| if (!use_fallback_content_) |
| return; |
| use_fallback_content_ = false; |
| if (ShadowRoot* root = GetElement().UserAgentShadowRoot()) |
| root->RemoveChildren(); |
| CreateShadowSubtree(); |
| ReattachFallbackContent(); |
| } |
| |
| void ImageInputType::ReattachFallbackContent() { |
| if (!GetElement().GetDocument().InStyleRecalc()) { |
| // ComputedStyle depends on use_fallback_content_. Trigger recalc. |
| GetElement().SetNeedsStyleRecalc( |
| kLocalStyleChange, |
| StyleChangeReasonForTracing::Create(style_change_reason::kUseFallback)); |
| // LayoutObject type depends on use_fallback_content_. Trigger re-attach. |
| GetElement().SetForceReattachLayoutTree(); |
| } |
| } |
| |
| void ImageInputType::CreateShadowSubtree() { |
| if (!use_fallback_content_) { |
| BaseButtonInputType::CreateShadowSubtree(); |
| return; |
| } |
| HTMLImageFallbackHelper::CreateAltTextShadowTree(GetElement()); |
| } |
| |
| scoped_refptr<ComputedStyle> ImageInputType::CustomStyleForLayoutObject( |
| scoped_refptr<ComputedStyle> new_style) { |
| if (!use_fallback_content_) |
| return new_style; |
| |
| return HTMLImageFallbackHelper::CustomStyleForAltText(GetElement(), |
| std::move(new_style)); |
| } |
| |
| } // namespace blink |