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/*
* Copyright (c) 2020-2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/DOM/Document.h>
#include <LibWeb/DOM/Event.h>
#include <LibWeb/HTML/BrowsingContext.h>
#include <LibWeb/HTML/HTMLIFrameElement.h>
#include <LibWeb/HTML/Origin.h>
#include <LibWeb/HTML/Parser/HTMLParser.h>
#include <LibWeb/Layout/FrameBox.h>
namespace Web::HTML {
HTMLIFrameElement::HTMLIFrameElement(DOM::Document& document, DOM::QualifiedName qualified_name)
: BrowsingContextContainer(document, move(qualified_name))
{
set_prototype(&Bindings::cached_web_prototype(realm(), "HTMLIFrameElement"));
}
HTMLIFrameElement::~HTMLIFrameElement() = default;
RefPtr<Layout::Node> HTMLIFrameElement::create_layout_node(NonnullRefPtr<CSS::StyleProperties> style)
{
return adopt_ref(*new Layout::FrameBox(document(), *this, move(style)));
}
void HTMLIFrameElement::parse_attribute(FlyString const& name, String const& value)
{
HTMLElement::parse_attribute(name, value);
if (name == HTML::AttributeNames::src)
load_src(value);
}
// https://html.spec.whatwg.org/multipage/iframe-embed-object.html#the-iframe-element:the-iframe-element-6
void HTMLIFrameElement::inserted()
{
HTMLElement::inserted();
// When an iframe element element is inserted into a document whose browsing context is non-null, the user agent must run these steps:
if (document().browsing_context()) {
// 1. Create a new nested browsing context for element.
create_new_nested_browsing_context();
// FIXME: 2. If element has a sandbox attribute, then parse the sandboxing directive given the attribute's value and element's iframe sandboxing flag set.
// 3. Process the iframe attributes for element, with initialInsertion set to true.
process_the_iframe_attributes(true);
load_src(attribute(HTML::AttributeNames::src));
}
}
// https://html.spec.whatwg.org/multipage/urls-and-fetching.html#will-lazy-load-element-steps
bool HTMLIFrameElement::will_lazy_load_element() const
{
// 1. If scripting is disabled for element, then return false.
if (document().is_scripting_disabled())
return false;
// FIXME: 2. If element's lazy loading attribute is in the Lazy state, then return true.
// 3. Return false.
return false;
}
// https://html.spec.whatwg.org/multipage/iframe-embed-object.html#process-the-iframe-attributes
void HTMLIFrameElement::process_the_iframe_attributes(bool initial_insertion)
{
// 1. If element's srcdoc attribute is specified, then:
if (has_attribute(HTML::AttributeNames::srcdoc)) {
// 2. Set element's current navigation was lazy loaded boolean to false.
m_current_navigation_was_lazy_loaded = false;
// 3. If the will lazy load element steps given element return true, then:
if (will_lazy_load_element()) {
// FIXME: 1. Set element's lazy load resumption steps to the rest of this algorithm starting with the step labeled navigate to the srcdoc resource.
// FIXME: 2. Set element's current navigation was lazy loaded boolean to true.
// FIXME: 3. Start intersection-observing a lazy loading element for element.
// FIXME: 4. Return.
}
// FIXME: 4. Navigate to the srcdoc resource: navigate an iframe or frame given element and a new response whose URL list is « about:srcdoc », header list is « (`Content-Type`, `text/html`) », and body is the value of element's srcdoc attribute.
// FIXME: The resulting Document must be considered an iframe srcdoc document.
return;
}
// 2. Otherwise, run the shared attribute processing steps for iframe and frame elements given element and initialInsertion.
shared_attribute_processing_steps_for_iframe_and_frame(initial_insertion);
}
// https://html.spec.whatwg.org/multipage/iframe-embed-object.html#the-iframe-element:the-iframe-element-7
void HTMLIFrameElement::removed_from(DOM::Node* node)
{
HTMLElement::removed_from(node);
// When an iframe element is removed from a document, the user agent must discard the element's nested browsing context,
// if it is not null, and then set the element's nested browsing context to null.
if (m_nested_browsing_context) {
m_nested_browsing_context->discard();
m_nested_browsing_context = nullptr;
}
}
void HTMLIFrameElement::load_src(String const& value)
{
if (!m_nested_browsing_context)
return;
if (value.is_null())
return;
auto url = document().parse_url(value);
if (!url.is_valid()) {
dbgln("iframe failed to load URL: Invalid URL: {}", value);
return;
}
if (url.scheme() == "file" && document().origin().scheme() != "file") {
dbgln("iframe failed to load URL: Security violation: {} may not load {}", document().url(), url);
return;
}
dbgln("Loading iframe document from {}", value);
m_nested_browsing_context->loader().load(url, FrameLoader::Type::IFrame);
}
// https://html.spec.whatwg.org/multipage/rendering.html#attributes-for-embedded-content-and-images
void HTMLIFrameElement::apply_presentational_hints(CSS::StyleProperties& style) const
{
for_each_attribute([&](auto& name, auto& value) {
if (name == HTML::AttributeNames::width) {
if (auto parsed_value = parse_dimension_value(value))
style.set_property(CSS::PropertyID::Width, parsed_value.release_nonnull());
} else if (name == HTML::AttributeNames::height) {
if (auto parsed_value = parse_dimension_value(value))
style.set_property(CSS::PropertyID::Height, parsed_value.release_nonnull());
}
});
}
// https://html.spec.whatwg.org/multipage/iframe-embed-object.html#iframe-load-event-steps
void run_iframe_load_event_steps(HTML::HTMLIFrameElement& element)
{
// FIXME: 1. Assert: element's nested browsing context is not null.
if (!element.nested_browsing_context()) {
// FIXME: For some reason, we sometimes end up here in the middle of SunSpider.
dbgln("FIXME: run_iframe_load_event_steps called with null nested browsing context");
return;
}
// 2. Let childDocument be the active document of element's nested browsing context.
[[maybe_unused]] auto* child_document = element.nested_browsing_context()->active_document();
// FIXME: 3. If childDocument has its mute iframe load flag set, then return.
// FIXME: 4. Set childDocument's iframe load in progress flag.
// 5. Fire an event named load at element.
element.dispatch_event(*DOM::Event::create(element.realm(), HTML::EventNames::load));
// FIXME: 6. Unset childDocument's iframe load in progress flag.
}
}
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