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LibWeb: Bring HTMLOptionElement closer to spec
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parent
ae519c6fef
commit
00099a8ade
Notes:
sideshowbarker
2024-07-17 11:53:31 +09:00
Author: https://github.com/Igoorx
Commit: 00099a8ade
Pull-request: https://github.com/SerenityOS/serenity/pull/13638
3 changed files with 111 additions and 1 deletions
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@ -5,7 +5,13 @@
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/StringBuilder.h>
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#include <LibWeb/DOM/Node.h>
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#include <LibWeb/DOM/Text.h>
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#include <LibWeb/HTML/HTMLOptionElement.h>
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#include <LibWeb/HTML/HTMLScriptElement.h>
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#include <LibWeb/HTML/HTMLSelectElement.h>
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#include <ctype.h>
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namespace Web::HTML {
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@ -49,6 +55,99 @@ void HTMLOptionElement::set_selected(bool selected)
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ask_for_a_reset();
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}
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// https://html.spec.whatwg.org/multipage/form-elements.html#dom-option-value
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String HTMLOptionElement::value() const
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{
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// The value of an option element is the value of the value content attribute, if there is one.
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if (auto value_attr = get_attribute(HTML::AttributeNames::value); !value_attr.is_null())
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return value_attr;
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// ...or, if there is not, the value of the element's text IDL attribute.
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return text();
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}
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// https://html.spec.whatwg.org/multipage/form-elements.html#dom-option-value
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void HTMLOptionElement::set_value(String value)
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{
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set_attribute(HTML::AttributeNames::value, value);
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}
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// https://infra.spec.whatwg.org/#strip-and-collapse-ascii-whitespace
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static String strip_and_collapse_whitespace(StringView string)
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{
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// Replace any sequence of one or more consecutive code points that are ASCII whitespace in the string with a single U+0020 SPACE code point.
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StringBuilder builder;
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for (size_t i = 0; i < string.length(); ++i) {
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if (isspace(string[i])) {
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builder.append(' ');
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while (i < string.length()) {
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if (isspace(string[i])) {
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++i;
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continue;
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}
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builder.append(string[i]);
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break;
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}
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continue;
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}
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builder.append(string[i]);
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}
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// ...and then remove any leading and trailing ASCII whitespace from that string.
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return builder.to_string().trim_whitespace();
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}
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static void concatenate_descendants_text_content(DOM::Node const* node, StringBuilder& builder)
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{
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// FIXME: SVGScriptElement should also be skipped, but it doesn't exist yet.
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if (is<HTMLScriptElement>(node))
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return;
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if (is<DOM::Text>(node))
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builder.append(verify_cast<DOM::Text>(node)->data());
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node->for_each_child([&](auto const& node) {
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concatenate_descendants_text_content(&node, builder);
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});
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}
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// https://html.spec.whatwg.org/multipage/form-elements.html#dom-option-text
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String HTMLOptionElement::text() const
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{
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StringBuilder builder;
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// Concatenation of data of all the Text node descendants of the option element, in tree order,
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// excluding any that are descendants of descendants of the option element that are themselves
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// script or SVG script elements.
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for_each_child([&](auto const& node) {
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concatenate_descendants_text_content(&node, builder);
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});
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// Return the result of stripping and collapsing ASCII whitespace from the above concatenation.
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return strip_and_collapse_whitespace(builder.to_string());
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}
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// https://html.spec.whatwg.org/multipage/form-elements.html#dom-option-text
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void HTMLOptionElement::set_text(String text)
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{
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string_replace_all(text);
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}
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// https://html.spec.whatwg.org/multipage/form-elements.html#concept-option-index
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int HTMLOptionElement::index() const
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{
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// An option element's index is the number of option elements that are in the same list of options but that come before it in tree order.
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if (auto select_element = first_ancestor_of_type<HTMLSelectElement>()) {
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int index = 0;
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for (auto const& option_element : select_element->list_of_options()) {
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if (&option_element == this)
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return index;
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++index;
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}
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}
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// If the option element is not in a list of options, then the option element's index is zero.
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return 0;
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}
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// https://html.spec.whatwg.org/multipage/form-elements.html#ask-for-a-reset
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void HTMLOptionElement::ask_for_a_reset()
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{
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