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https://github.com/RGBCube/serenity
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LibWeb: Fix up constructing the form entry list
In particular: - Don't include none submitter buttons. - Use type_state() instead type() to avoid direct string comparisons - Support the hidden _charset_ input - Get form associated element's value directly instead of via the value attribute - Split line break normalization into a separate function so that it can also be used by form submission.
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8 changed files with 101 additions and 30 deletions
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@ -628,4 +628,5 @@ class ProgressEvent;
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class XMLHttpRequest;
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class XMLHttpRequestEventTarget;
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class XMLHttpRequestUpload;
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struct FormDataEntry;
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}
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@ -6,6 +6,7 @@
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#pragma once
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#include <AK/DeprecatedString.h>
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#include <AK/WeakPtr.h>
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#include <LibWeb/Forward.h>
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@ -63,6 +64,14 @@ public:
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// https://html.spec.whatwg.org/multipage/forms.html#category-autocapitalize
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virtual bool is_auto_capitalize_inheriting() const { return false; }
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// https://html.spec.whatwg.org/multipage/forms.html#concept-button
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virtual bool is_button() const { return false; }
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// https://html.spec.whatwg.org/multipage/forms.html#concept-submit-button
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virtual bool is_submit_button() const { return false; }
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virtual DeprecatedString value() const { return DeprecatedString::empty(); }
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virtual HTMLElement& form_associated_element_to_html_element() = 0;
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// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#concept-form-reset-control
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@ -49,8 +49,7 @@ WebIDL::ExceptionOr<XHR::FormDataEntry> create_entry(JS::Realm& realm, String co
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}
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// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#constructing-the-form-data-set
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// FIXME: Add missing parameters optional submitter, and optional encoding
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WebIDL::ExceptionOr<Optional<Vector<XHR::FormDataEntry>>> construct_entry_list(JS::Realm& realm, HTMLFormElement& form)
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WebIDL::ExceptionOr<Optional<Vector<XHR::FormDataEntry>>> construct_entry_list(JS::Realm& realm, HTMLFormElement& form, JS::GCPtr<HTMLElement> submitter, Optional<String> encoding)
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{
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auto& vm = realm.vm();
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@ -69,6 +68,9 @@ WebIDL::ExceptionOr<Optional<Vector<XHR::FormDataEntry>>> construct_entry_list(J
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// 5. For each element field in controls, in tree order:
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for (auto const& control : controls) {
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auto const* control_as_form_associated_element = dynamic_cast<HTML::FormAssociatedElement const*>(control.ptr());
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VERIFY(control_as_form_associated_element);
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// 1. If any of the following is true, then continue:
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// - The field element has a datalist element ancestor.
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if (control->first_ancestor_of_type<HTML::HTMLDataListElement>())
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@ -76,16 +78,18 @@ WebIDL::ExceptionOr<Optional<Vector<XHR::FormDataEntry>>> construct_entry_list(J
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// - The field element is disabled.
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if (control->is_actually_disabled())
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continue;
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// FIXME: - The field element is a button but it is not submitter.
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// - The field element is a button but it is not submitter.
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if (control_as_form_associated_element->is_button() && control.ptr() != submitter.ptr())
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continue;
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// - The field element is an input element whose type attribute is in the Checkbox state and whose checkedness is false.
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// - The field element is an input element whose type attribute is in the Radio Button state and whose checkedness is false.
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if (auto* input_element = dynamic_cast<HTML::HTMLInputElement*>(control.ptr())) {
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if ((input_element->type() == "checkbox" || input_element->type() == "radio") && !input_element->checked())
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if ((input_element->type_state() == HTMLInputElement::TypeAttributeState::Checkbox || input_element->type_state() == HTMLInputElement::TypeAttributeState::RadioButton) && !input_element->checked())
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continue;
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}
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// 2. If the field element is an input element whose type attribute is in the Image Button state, then:
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if (auto* input_element = dynamic_cast<HTML::HTMLInputElement*>(control.ptr()); input_element && input_element->type() == "image") {
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if (auto* input_element = dynamic_cast<HTML::HTMLInputElement*>(control.ptr()); input_element && input_element->type_state() == HTMLInputElement::TypeAttributeState::ImageButton) {
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// FIXME: 1. If the field element has a name attribute specified and its value is not the empty string, let name be that value followed by a single U+002E FULL STOP character (.). Otherwise, let name be the empty string.
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// FIXME: 2. Let namex be the string consisting of the concatenation of name and a single U0078 LATIN SMALL LETTER X character (x).
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// FIXME: 3. Let namey be the string consisting of the concatenation of name and a single U+0079 LATIN SMALL LETTER Y character (y).
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@ -116,7 +120,7 @@ WebIDL::ExceptionOr<Optional<Vector<XHR::FormDataEntry>>> construct_entry_list(J
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}
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}
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// 7. Otherwise, if the field element is an input element whose type attribute is in the Checkbox state or the Radio Button state, then:
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else if (auto* checkbox_or_radio_element = dynamic_cast<HTML::HTMLInputElement*>(control.ptr()); checkbox_or_radio_element && (checkbox_or_radio_element->type() == "checkbox" || checkbox_or_radio_element->type() == "radio") && checkbox_or_radio_element->checked()) {
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else if (auto* checkbox_or_radio_element = dynamic_cast<HTML::HTMLInputElement*>(control.ptr()); checkbox_or_radio_element && (checkbox_or_radio_element->type_state() == HTMLInputElement::TypeAttributeState::Checkbox || checkbox_or_radio_element->type_state() == HTMLInputElement::TypeAttributeState::RadioButton) && checkbox_or_radio_element->checked()) {
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// 1. If the field element has a value attribute specified, then let value be the value of that attribute; otherwise, let value be the string "on".
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auto value = checkbox_or_radio_element->value();
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if (value.is_empty())
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@ -128,7 +132,7 @@ WebIDL::ExceptionOr<Optional<Vector<XHR::FormDataEntry>>> construct_entry_list(J
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TRY_OR_THROW_OOM(vm, entry_list.try_append(XHR::FormDataEntry { .name = move(checkbox_or_radio_element_name), .value = move(checkbox_or_radio_element_value) }));
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}
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// 8. Otherwise, if the field element is an input element whose type attribute is in the File Upload state, then:
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else if (auto* file_element = dynamic_cast<HTML::HTMLInputElement*>(control.ptr()); file_element && file_element->type() == "file") {
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else if (auto* file_element = dynamic_cast<HTML::HTMLInputElement*>(control.ptr()); file_element && file_element->type_state() == HTMLInputElement::TypeAttributeState::FileUpload) {
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// 1. If there are no selected files, then create an entry with name and a new File object with an empty name, application/octet-stream as type, and an empty body, and append it to entry list.
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if (file_element->files()->length() == 0) {
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FileAPI::FilePropertyBag options {};
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@ -144,14 +148,17 @@ WebIDL::ExceptionOr<Optional<Vector<XHR::FormDataEntry>>> construct_entry_list(J
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}
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}
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}
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// FIXME: 9. Otherwise, if the field element is an input element whose type attribute is in the Hidden state and name is an ASCII case-insensitive match for "_charset_":
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// FIXME: 1. Let charset be the name of encoding if encoding is given, and "UTF-8" otherwise.
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// FIXME: 2. Create an entry with name and charset, and append it to entry list.
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// 9. Otherwise, if the field element is an input element whose type attribute is in the Hidden state and name is an ASCII case-insensitive match for "_charset_":
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else if (auto* hidden_input = dynamic_cast<HTML::HTMLInputElement*>(control.ptr()); hidden_input && hidden_input->type_state() == HTMLInputElement::TypeAttributeState::Hidden && Infra::is_ascii_case_insensitive_match(name, "_charset_"sv)) {
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// 1. Let charset be the name of encoding if encoding is given, and "UTF-8" otherwise.
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auto charset = encoding.has_value() ? encoding.value() : TRY_OR_THROW_OOM(vm, "UTF-8"_string);
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// 2. Create an entry with name and charset, and append it to entry list.
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TRY_OR_THROW_OOM(vm, entry_list.try_append(XHR::FormDataEntry { .name = move(name), .value = move(charset) }));
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}
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// 10. Otherwise, create an entry with name and the value of the field element, and append it to entry list.
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else {
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auto* element = dynamic_cast<HTML::HTMLElement*>(control.ptr());
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VERIFY(element);
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auto value_attribute = TRY_OR_THROW_OOM(vm, String::from_deprecated_string(element->attribute("value"sv)));
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auto value_attribute = TRY_OR_THROW_OOM(vm, String::from_deprecated_string(control_as_form_associated_element->value()));
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TRY_OR_THROW_OOM(vm, entry_list.try_append(XHR::FormDataEntry { .name = move(name), .value = move(value_attribute) }));
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}
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@ -177,10 +184,10 @@ WebIDL::ExceptionOr<Optional<Vector<XHR::FormDataEntry>>> construct_entry_list(J
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return entry_list;
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}
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// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#multipart/form-data-encoding-algorithm
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ErrorOr<SerializedFormData> serialize_to_multipart_form_data(Vector<XHR::FormDataEntry> const& entry_list)
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ErrorOr<String> normalize_line_breaks(StringView value)
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{
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auto normalize_line_breaks = [](StringView value) -> ErrorOr<String> {
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// Replace every occurrence of U+000D (CR) not followed by U+000A (LF), and every occurrence of U+000A (LF) not
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// preceded by U+000D (CR) by a string consisting of a U+000D (CR) and U+000A (LF).
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StringBuilder builder;
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GenericLexer lexer { value };
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while (!lexer.is_eof()) {
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@ -193,8 +200,11 @@ ErrorOr<SerializedFormData> serialize_to_multipart_form_data(Vector<XHR::FormDat
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}
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}
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return builder.to_string();
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};
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}
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// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#multipart/form-data-encoding-algorithm
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ErrorOr<SerializedFormData> serialize_to_multipart_form_data(Vector<XHR::FormDataEntry> const& entry_list)
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{
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auto escape_line_feed_carriage_return_double_quote = [](StringView value) -> ErrorOr<String> {
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StringBuilder builder;
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GenericLexer lexer { value };
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@ -16,7 +16,8 @@ struct SerializedFormData {
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};
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WebIDL::ExceptionOr<XHR::FormDataEntry> create_entry(JS::Realm& realm, String const& name, Variant<JS::NonnullGCPtr<FileAPI::Blob>, String> const& value, Optional<String> const& filename = {});
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WebIDL::ExceptionOr<Optional<Vector<XHR::FormDataEntry>>> construct_entry_list(JS::Realm&, HTMLFormElement&);
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WebIDL::ExceptionOr<Optional<Vector<XHR::FormDataEntry>>> construct_entry_list(JS::Realm&, HTMLFormElement&, JS::GCPtr<HTMLElement> submitter = nullptr, Optional<String> encoding = Optional<String> {});
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ErrorOr<String> normalize_line_breaks(StringView value);
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ErrorOr<SerializedFormData> serialize_to_multipart_form_data(Vector<XHR::FormDataEntry> const& entry_list);
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}
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@ -99,4 +99,20 @@ i32 HTMLButtonElement::default_tab_index_value() const
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return 0;
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}
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// https://html.spec.whatwg.org/multipage/forms.html#concept-submit-button
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// https://html.spec.whatwg.org/multipage/form-elements.html#the-button-element:concept-submit-button
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bool HTMLButtonElement::is_submit_button() const
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{
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// If the type attribute is in the Submit Button state, the element is specifically a submit button.
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return type_state() == TypeAttributeState::Submit;
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}
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// https://html.spec.whatwg.org/multipage/form-elements.html#the-button-element:concept-fe-value
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DeprecatedString HTMLButtonElement::value() const
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{
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if (!has_attribute(AttributeNames::value))
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return DeprecatedString::empty();
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return attribute(AttributeNames::value);
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}
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}
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@ -52,6 +52,12 @@ public:
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// https://html.spec.whatwg.org/multipage/forms.html#category-autocapitalize
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virtual bool is_auto_capitalize_inheriting() const override { return true; }
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// https://html.spec.whatwg.org/multipage/forms.html#concept-button
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// https://html.spec.whatwg.org/multipage/form-elements.html#the-button-element:concept-button
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virtual bool is_button() const override { return true; }
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virtual bool is_submit_button() const override;
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// ^HTMLElement
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// https://html.spec.whatwg.org/multipage/forms.html#category-label
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virtual bool is_labelable() const override { return true; }
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@ -59,6 +65,8 @@ public:
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// https://www.w3.org/TR/html-aria/#el-button
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virtual Optional<ARIA::Role> default_role() const override { return ARIA::Role::button; }
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virtual DeprecatedString value() const override;
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private:
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HTMLButtonElement(DOM::Document&, DOM::QualifiedName);
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@ -1085,4 +1085,24 @@ Optional<ARIA::Role> HTMLInputElement::default_role() const
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return {};
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}
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bool HTMLInputElement::is_button() const
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{
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// https://html.spec.whatwg.org/multipage/input.html#submit-button-state-(type=submit):concept-button
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// https://html.spec.whatwg.org/multipage/input.html#image-button-state-(type=image):concept-button
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// https://html.spec.whatwg.org/multipage/input.html#reset-button-state-(type=reset):concept-button
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// https://html.spec.whatwg.org/multipage/input.html#button-state-(type=button):concept-button
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return type_state() == TypeAttributeState::SubmitButton
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|| type_state() == TypeAttributeState::ImageButton
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|| type_state() == TypeAttributeState::ResetButton
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|| type_state() == TypeAttributeState::Button;
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}
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bool HTMLInputElement::is_submit_button() const
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{
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// https://html.spec.whatwg.org/multipage/input.html#submit-button-state-(type=submit):concept-submit-button
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// https://html.spec.whatwg.org/multipage/input.html#image-button-state-(type=image):concept-submit-button
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return type_state() == TypeAttributeState::SubmitButton
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|| type_state() == TypeAttributeState::ImageButton;
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}
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}
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@ -63,7 +63,7 @@ public:
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DeprecatedString default_value() const { return attribute(HTML::AttributeNames::value); }
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DeprecatedString name() const { return attribute(HTML::AttributeNames::name); }
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DeprecatedString value() const;
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virtual DeprecatedString value() const override;
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WebIDL::ExceptionOr<void> set_value(DeprecatedString);
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Optional<DeprecatedString> placeholder_value() const;
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@ -120,6 +120,12 @@ public:
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// https://html.spec.whatwg.org/multipage/forms.html#category-autocapitalize
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virtual bool is_auto_capitalize_inheriting() const override { return true; }
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// https://html.spec.whatwg.org/multipage/forms.html#concept-button
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virtual bool is_button() const override;
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// https://html.spec.whatwg.org/multipage/forms.html#concept-submit-button
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virtual bool is_submit_button() const override;
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virtual void reset_algorithm() override;
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virtual void form_associated_element_was_inserted() override;
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