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Ladybird+LibWeb+WebContent: Parse the <input type=file> accept attribute

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This parses the accept attribute value for file input types and passes
it along to the browser chromes.
This commit is contained in:
Timothy Flynn 2024-03-14 12:26:00 -04:00 • committed by Andreas Kling
parent e4213f5767
commit 6760d236e4
Notes: sideshowbarker 2024-07-17 08:45:34 +09:00
20 changed files with 267 additions and 24 deletions
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43
Userland/Libraries/LibWeb/HTML/HTMLInputElement.cpp
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@ -39,6 +39,7 @@
#include <LibWeb/Layout/CheckBox.h>
#include <LibWeb/Layout/ImageBox.h>
#include <LibWeb/Layout/RadioButton.h>
#include <LibWeb/MimeSniff/MimeType.h>
#include <LibWeb/MimeSniff/Resource.h>
#include <LibWeb/Namespace.h>
#include <LibWeb/Page/Page.h>
@ -181,6 +182,43 @@ void HTMLInputElement::set_files(JS::GCPtr<FileAPI::FileList> files)
m_selected_files = files;
}
// https://html.spec.whatwg.org/multipage/input.html#attr-input-accept
FileFilter HTMLInputElement::parse_accept_attribute() const
{
FileFilter filter;
// If specified, the attribute must consist of a set of comma-separated tokens, each of which must be an ASCII
// case-insensitive match for one of the following:
get_attribute_value(HTML::AttributeNames::accept).bytes_as_string_view().for_each_split_view(',', SplitBehavior::Nothing, [&](StringView value) {
// The string "audio/*"
// Indicates that sound files are accepted.
if (value.equals_ignoring_ascii_case("audio/*"sv))
filter.add_filter(FileFilter::FileType::Audio);
// The string "video/*"
// Indicates that video files are accepted.
if (value.equals_ignoring_ascii_case("video/*"sv))
filter.add_filter(FileFilter::FileType::Video);
// The string "image/*"
// Indicates that image files are accepted.
if (value.equals_ignoring_ascii_case("image/*"sv))
filter.add_filter(FileFilter::FileType::Image);
// A valid MIME type string with no parameters
// Indicates that files of the specified type are accepted.
else if (auto mime_type = MUST(MimeSniff::MimeType::parse(value)); mime_type.has_value() && mime_type->parameters().is_empty())
filter.add_filter(FileFilter::MimeType { mime_type->essence() });
// A string whose first character is a U+002E FULL STOP character (.)
// Indicates that files with the specified file extension are accepted.
else if (value.starts_with('.'))
filter.add_filter(FileFilter::Extension { MUST(String::from_utf8(value.substring_view(1))) });
});
return filter;
}
// https://html.spec.whatwg.org/multipage/input.html#update-the-file-selection
void HTMLInputElement::update_the_file_selection(JS::NonnullGCPtr<FileAPI::FileList> files)
{
@ -227,12 +265,11 @@ static void show_the_picker_if_applicable(HTMLInputElement& element)
// with the bubbles attribute initialized to true.
// 5. Otherwise, update the file selection for element.
auto accepted_file_types = element.parse_accept_attribute();
auto allow_multiple_files = element.has_attribute(HTML::AttributeNames::multiple) ? AllowMultipleFiles::Yes : AllowMultipleFiles::No;
auto weak_element = element.make_weak_ptr<HTMLInputElement>();
// FIXME: Pass along accept attribute information https://html.spec.whatwg.org/multipage/input.html#attr-input-accept
// The accept attribute may be specified to provide user agents with a hint of what file types will be accepted.
element.document().browsing_context()->top_level_browsing_context()->page().did_request_file_picker(weak_element, allow_multiple_files);
element.document().browsing_context()->top_level_browsing_context()->page().did_request_file_picker(weak_element, move(accepted_file_types), allow_multiple_files);
return;
}