ImageInputType.cpp [plain text]
#include "config.h"
#include "ImageInputType.h"
#include "CachedImage.h"
#include "DOMFormData.h"
#include "HTMLFormElement.h"
#include "HTMLImageLoader.h"
#include "HTMLInputElement.h"
#include "HTMLNames.h"
#include "HTMLParserIdioms.h"
#include "InputTypeNames.h"
#include "MouseEvent.h"
#include "RenderImage.h"
#include <wtf/NeverDestroyed.h>
namespace WebCore {
using namespace HTMLNames;
ImageInputType::ImageInputType(HTMLInputElement& element)
: BaseButtonInputType(element)
{
}
const AtomString& ImageInputType::formControlType() const
{
return InputTypeNames::image();
}
bool ImageInputType::isFormDataAppendable() const
{
return true;
}
bool ImageInputType::appendFormData(DOMFormData& formData, bool) const
{
ASSERT(element());
if (!element()->isActivatedSubmit())
return false;
auto& name = element()->name();
if (name.isEmpty()) {
formData.append("x"_s, String::number(m_clickLocation.x()));
formData.append("y"_s, String::number(m_clickLocation.y()));
return true;
}
formData.append(makeString(name, ".x"), String::number(m_clickLocation.x()));
formData.append(makeString(name, ".y"), String::number(m_clickLocation.y()));
auto value = element()->value();
if (!value.isEmpty())
formData.append(name, value);
return true;
}
bool ImageInputType::supportsValidation() const
{
return false;
}
void ImageInputType::handleDOMActivateEvent(Event& event)
{
ASSERT(element());
Ref<HTMLInputElement> protectedElement(*element());
if (protectedElement->isDisabledFormControl() || !protectedElement->form())
return;
Ref<HTMLFormElement> protectedForm(*protectedElement->form());
protectedElement->setActivatedSubmit(true);
m_clickLocation = IntPoint();
if (event.underlyingEvent()) {
Event& underlyingEvent = *event.underlyingEvent();
if (is<MouseEvent>(underlyingEvent)) {
MouseEvent& mouseEvent = downcast<MouseEvent>(underlyingEvent);
if (!mouseEvent.isSimulated())
m_clickLocation = IntPoint(mouseEvent.offsetX(), mouseEvent.offsetY());
}
}
protectedElement->document().updateLayoutIgnorePendingStylesheets();
if (auto currentForm = protectedElement->form())
currentForm->prepareForSubmission(event);
protectedElement->setActivatedSubmit(false);
event.setDefaultHandled();
}
RenderPtr<RenderElement> ImageInputType::createInputRenderer(RenderStyle&& style)
{
ASSERT(element());
return createRenderer<RenderImage>(*element(), WTFMove(style));
}
void ImageInputType::attributeChanged(const QualifiedName& name)
{
if (name == altAttr) {
if (auto* element = this->element()) {
auto* renderer = element->renderer();
if (is<RenderImage>(renderer))
downcast<RenderImage>(*renderer).updateAltText();
}
} else if (name == srcAttr) {
if (auto* element = this->element()) {
if (element->renderer())
element->ensureImageLoader().updateFromElementIgnoringPreviousError();
}
}
BaseButtonInputType::attributeChanged(name);
}
void ImageInputType::attach()
{
BaseButtonInputType::attach();
ASSERT(element());
HTMLImageLoader& imageLoader = element()->ensureImageLoader();
imageLoader.updateFromElement();
auto* renderer = downcast<RenderImage>(element()->renderer());
if (!renderer)
return;
if (imageLoader.hasPendingBeforeLoadEvent())
return;
auto& imageResource = renderer->imageResource();
imageResource.setCachedImage(imageLoader.image());
if (!imageLoader.image() && !imageResource.cachedImage())
renderer->setImageSizeForAltText();
}
bool ImageInputType::shouldRespectAlignAttribute()
{
return true;
}
bool ImageInputType::canBeSuccessfulSubmitButton()
{
return true;
}
bool ImageInputType::isImageButton() const
{
return true;
}
bool ImageInputType::isEnumeratable()
{
return false;
}
bool ImageInputType::shouldRespectHeightAndWidthAttributes()
{
return true;
}
unsigned ImageInputType::height() const
{
ASSERT(element());
Ref<HTMLInputElement> element(*this->element());
element->document().updateLayout();
if (auto* renderer = element->renderer())
return adjustForAbsoluteZoom(downcast<RenderBox>(*renderer).contentHeight(), *renderer);
if (auto optionalHeight = parseHTMLNonNegativeInteger(element->attributeWithoutSynchronization(heightAttr)))
return optionalHeight.value();
auto* imageLoader = element->imageLoader();
if (imageLoader && imageLoader->image())
return imageLoader->image()->imageSizeForRenderer(element->renderer(), 1).height().toUnsigned();
return 0;
}
unsigned ImageInputType::width() const
{
ASSERT(element());
Ref<HTMLInputElement> element(*this->element());
element->document().updateLayout();
if (auto* renderer = element->renderer())
return adjustForAbsoluteZoom(downcast<RenderBox>(*renderer).contentWidth(), *renderer);
if (auto optionalWidth = parseHTMLNonNegativeInteger(element->attributeWithoutSynchronization(widthAttr)))
return optionalWidth.value();
auto* imageLoader = element->imageLoader();
if (imageLoader && imageLoader->image())
return imageLoader->image()->imageSizeForRenderer(element->renderer(), 1).width().toUnsigned();
return 0;
}
}