mirrors/ladybird
1
0
Fork 0
mirror of https://github.com/LadybirdBrowser/ladybird.git synced 2025-04-21 12:05:15 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 10

LibWeb: Implement Element.outerHTML

Browse source 
This piggybacks on the same fragment serialization code that innerHTML
uses, but instead of constructing an imaginary parent element like the
spec asks us to, we just add a separate serialization mode that includes
the context element in the serialized markup.

This makes the image carousel on https://utah.edu/ show up :^)
This commit is contained in:
Andreas Kling 2024-04-09 14:44:58 +02:00 • committed by Tim Flynn
parent 0412e17bac
commit 870a954e11
Notes: sideshowbarker 2024-07-18 02:13:10 +09:00
9 changed files with 120 additions and 75 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
Tests/LibWeb/Text/expected/HTML/outerHTML.txt Normal file
View file

@ -0,0 +1,2 @@
hello students outerHTML: <div id="foo"><b>hello students</b></div>
innerHTML: <b>hello students</b>

8
Tests/LibWeb/Text/input/HTML/outerHTML.html Normal file
View file

@ -0,0 +1,8 @@
<script src="../include.js"></script>
<div id="foo"><b>hello students</b></div>
<script>
test(() => {
println("outerHTML: " + foo.outerHTML)
println("innerHTML: " + foo.innerHTML)
});
</script>

13
Userland/Libraries/LibWeb/DOM/Element.cpp
View file

@ -1402,6 +1402,19 @@ bool Element::is_actually_disabled() const
return false;
}
// https://w3c.github.io/DOM-Parsing/#dom-element-outerhtml
WebIDL::ExceptionOr<String> Element::outer_html() const
{
return serialize_fragment(DOMParsing::RequireWellFormed::Yes, FragmentSerializationMode::Outer);
}
// https://w3c.github.io/DOM-Parsing/#dom-element-outerhtml
WebIDL::ExceptionOr<void> Element::set_outer_html(String const&)
{
dbgln("FIXME: Implement Element::set_outer_html()");
return {};
}
// https://w3c.github.io/DOM-Parsing/#dom-element-insertadjacenthtml
WebIDL::ExceptionOr<void> Element::insert_adjacent_html(String const& position, String const& text)
{

3
Userland/Libraries/LibWeb/DOM/Element.h
View file

@ -175,6 +175,9 @@ public:
WebIDL::ExceptionOr<void> insert_adjacent_html(String const& position, String const& text);
WebIDL::ExceptionOr<String> outer_html() const;
WebIDL::ExceptionOr<void> set_outer_html(String const&);
bool is_focused() const;
bool is_active() const;
bool is_target() const;

2
Userland/Libraries/LibWeb/DOM/Element.idl
View file

@ -85,6 +85,8 @@ interface Element : Node {
undefined insertAdjacentText(DOMString where, DOMString data);
[CEReactions] undefined insertAdjacentHTML(DOMString position, DOMString text);
[CEReactions, LegacyNullToEmptyString] attribute DOMString outerHTML;
undefined scrollIntoView(optional (boolean or ScrollIntoViewOptions) arg = {});
undefined scroll(optional ScrollToOptions options = {});

4
Userland/Libraries/LibWeb/DOM/Node.cpp
View file

@ -1336,14 +1336,14 @@ void Node::string_replace_all(String const& string)
}
// https://w3c.github.io/DOM-Parsing/#dfn-fragment-serializing-algorithm
WebIDL::ExceptionOr<String> Node::serialize_fragment(DOMParsing::RequireWellFormed require_well_formed) const
WebIDL::ExceptionOr<String> Node::serialize_fragment(DOMParsing::RequireWellFormed require_well_formed, FragmentSerializationMode fragment_serialization_mode) const
{
// 1. Let context document be the value of node's node document.
auto const& context_document = document();
// 2. If context document is an HTML document, return an HTML serialization of node.
if (context_document.is_html_document())
return HTML::HTMLParser::serialize_html_fragment(*this);
return HTML::HTMLParser::serialize_html_fragment(*this, fragment_serialization_mode);
// 3. Otherwise, context document is an XML document; return an XML serialization of node passing the flag require well-formed.
return DOMParsing::serialize_node_to_xml_string(*this, require_well_formed);

7
Userland/Libraries/LibWeb/DOM/Node.h
View file

@ -45,6 +45,11 @@ struct GetRootNodeOptions {
bool composed { false };
};
enum class FragmentSerializationMode {
Inner,
Outer,
};
class Node : public EventTarget {
WEB_PLATFORM_OBJECT(Node, EventTarget);
@ -242,7 +247,7 @@ public:
i32 unique_id() const { return m_unique_id; }
static Node* from_unique_id(i32);
WebIDL::ExceptionOr<String> serialize_fragment(DOMParsing::RequireWellFormed) const;
WebIDL::ExceptionOr<String> serialize_fragment(DOMParsing::RequireWellFormed, FragmentSerializationMode = FragmentSerializationMode::Inner) const;
void replace_all(JS::GCPtr<Node>);
void string_replace_all(String const&);

154
Userland/Libraries/LibWeb/HTML/Parser/HTMLParser.cpp
View file

@ -4275,8 +4275,89 @@ static String escape_string(StringView string, AttributeMode attribute_mode)
}
// https://html.spec.whatwg.org/multipage/parsing.html#html-fragment-serialisation-algorithm
String HTMLParser::serialize_html_fragment(DOM::Node const& node)
String HTMLParser::serialize_html_fragment(DOM::Node const& node, DOM::FragmentSerializationMode fragment_serialization_mode)
{
// NOTE: Steps in this function are jumbled a bit to accommodate the Element.outerHTML API.
// When called with FragmentSerializationMode::Outer, we will serialize the element itself,
// not just its children.
// 2. Let s be a string, and initialize it to the empty string.
StringBuilder builder;
auto serialize_element = [&](DOM::Element const& element) {
// 1. If current node is an element in the HTML namespace, the MathML namespace, or the SVG namespace, then let tagname be current node's local name.
// Otherwise, let tagname be current node's qualified name.
FlyString tag_name;
if (element.namespace_uri().has_value() && element.namespace_uri()->is_one_of(Namespace::HTML, Namespace::MathML, Namespace::SVG))
tag_name = element.local_name();
else
tag_name = element.qualified_name();
// 2. Append a U+003C LESS-THAN SIGN character (<), followed by tagname.
builder.append('<');
builder.append(tag_name);
// 3. If current node's is value is not null, and the element does not have an is attribute in its attribute list,
// then append the string " is="", followed by current node's is value escaped as described below in attribute mode,
// followed by a U+0022 QUOTATION MARK character (").
if (element.is_value().has_value() && !element.has_attribute(AttributeNames::is)) {
builder.append(" is=\""sv);
builder.append(escape_string(element.is_value().value(), AttributeMode::Yes));
builder.append('"');
}
// 4. For each attribute that the element has, append a U+0020 SPACE character, the attribute's serialized name as described below, a U+003D EQUALS SIGN character (=),
// a U+0022 QUOTATION MARK character ("), the attribute's value, escaped as described below in attribute mode, and a second U+0022 QUOTATION MARK character (").
// NOTE: The order of attributes is implementation-defined. The only constraint is that the order must be stable.
element.for_each_attribute([&](auto const& attribute) {
builder.append(' ');
// An attribute's serialized name for the purposes of the previous paragraph must be determined as follows:
// NOTE: As far as I can tell, these steps are equivalent to just using the qualified name.
//
// -> If the attribute has no namespace:
// The attribute's serialized name is the attribute's local name.
// -> If the attribute is in the XML namespace:
// The attribute's serialized name is the string "xml:" followed by the attribute's local name.
// -> If the attribute is in the XMLNS namespace and the attribute's local name is xmlns:
// The attribute's serialized name is the string "xmlns".
// -> If the attribute is in the XMLNS namespace and the attribute's local name is not xmlns:
// The attribute's serialized name is the string "xmlns:" followed by the attribute's local name.
// -> If the attribute is in the XLink namespace:
// The attribute's serialized name is the string "xlink:" followed by the attribute's local name.
// -> If the attribute is in some other namespace:
// The attribute's serialized name is the attribute's qualified name.
builder.append(attribute.name());
builder.append("=\""sv);
builder.append(escape_string(attribute.value(), AttributeMode::Yes));
builder.append('"');
});
// 5. Append a U+003E GREATER-THAN SIGN character (>).
builder.append('>');
// 6. If current node serializes as void, then continue on to the next child node at this point.
if (element.serializes_as_void())
return IterationDecision::Continue;
// 7. Append the value of running the HTML fragment serialization algorithm on the current node element (thus recursing into this algorithm for that element),
// followed by a U+003C LESS-THAN SIGN character (<), a U+002F SOLIDUS character (/), tagname again, and finally a U+003E GREATER-THAN SIGN character (>).
builder.append(serialize_html_fragment(element));
builder.append("</"sv);
builder.append(tag_name);
builder.append('>');
return IterationDecision::Continue;
};
if (fragment_serialization_mode == DOM::FragmentSerializationMode::Outer) {
serialize_element(verify_cast<DOM::Element>(node));
return builder.to_string_without_validation();
}
// The algorithm takes as input a DOM Element, Document, or DocumentFragment referred to as the node.
VERIFY(node.is_element() || node.is_document() || node.is_document_fragment());
JS::NonnullGCPtr<DOM::Node const> actual_node = node;
@ -4295,9 +4376,6 @@ String HTMLParser::serialize_html_fragment(DOM::Node const& node)
actual_node = verify_cast<HTML::HTMLTemplateElement>(element).content();
}
// 2. Let s be a string, and initialize it to the empty string.
StringBuilder builder;
// 4. For each child node of the node, in tree order, run the following steps:
actual_node->for_each_child([&](DOM::Node& current_node) {
// 1. Let current node be the child node being processed.
@ -4307,73 +4385,7 @@ String HTMLParser::serialize_html_fragment(DOM::Node const& node)
if (is<DOM::Element>(current_node)) {
// -> If current node is an Element
auto& element = verify_cast<DOM::Element>(current_node);
// 1. If current node is an element in the HTML namespace, the MathML namespace, or the SVG namespace, then let tagname be current node's local name.
// Otherwise, let tagname be current node's qualified name.
FlyString tag_name;
if (element.namespace_uri().has_value() && element.namespace_uri()->is_one_of(Namespace::HTML, Namespace::MathML, Namespace::SVG))
tag_name = element.local_name();
else
tag_name = element.qualified_name();
// 2. Append a U+003C LESS-THAN SIGN character (<), followed by tagname.
builder.append('<');
builder.append(tag_name);
// 3. If current node's is value is not null, and the element does not have an is attribute in its attribute list,
// then append the string " is="", followed by current node's is value escaped as described below in attribute mode,
// followed by a U+0022 QUOTATION MARK character (").
if (element.is_value().has_value() && !element.has_attribute(AttributeNames::is)) {
builder.append(" is=\""sv);
builder.append(escape_string(element.is_value().value(), AttributeMode::Yes));
builder.append('"');
}
// 4. For each attribute that the element has, append a U+0020 SPACE character, the attribute's serialized name as described below, a U+003D EQUALS SIGN character (=),
// a U+0022 QUOTATION MARK character ("), the attribute's value, escaped as described below in attribute mode, and a second U+0022 QUOTATION MARK character (").
// NOTE: The order of attributes is implementation-defined. The only constraint is that the order must be stable.
element.for_each_attribute([&](auto const& attribute) {
builder.append(' ');
// An attribute's serialized name for the purposes of the previous paragraph must be determined as follows:
// NOTE: As far as I can tell, these steps are equivalent to just using the qualified name.
//
// -> If the attribute has no namespace:
// The attribute's serialized name is the attribute's local name.
// -> If the attribute is in the XML namespace:
// The attribute's serialized name is the string "xml:" followed by the attribute's local name.
// -> If the attribute is in the XMLNS namespace and the attribute's local name is xmlns:
// The attribute's serialized name is the string "xmlns".
// -> If the attribute is in the XMLNS namespace and the attribute's local name is not xmlns:
// The attribute's serialized name is the string "xmlns:" followed by the attribute's local name.
// -> If the attribute is in the XLink namespace:
// The attribute's serialized name is the string "xlink:" followed by the attribute's local name.
// -> If the attribute is in some other namespace:
// The attribute's serialized name is the attribute's qualified name.
builder.append(attribute.name());
builder.append("=\""sv);
builder.append(escape_string(attribute.value(), AttributeMode::Yes));
builder.append('"');
});
// 5. Append a U+003E GREATER-THAN SIGN character (>).
builder.append('>');
// 6. If current node serializes as void, then continue on to the next child node at this point.
if (element.serializes_as_void())
return IterationDecision::Continue;
// 7. Append the value of running the HTML fragment serialization algorithm on the current node element (thus recursing into this algorithm for that element),
// followed by a U+003C LESS-THAN SIGN character (<), a U+002F SOLIDUS character (/), tagname again, and finally a U+003E GREATER-THAN SIGN character (>).
builder.append(serialize_html_fragment(element));
builder.append("</"sv);
builder.append(tag_name);
builder.append('>');
return IterationDecision::Continue;
return serialize_element(element);
}
if (is<DOM::Text>(current_node)) {

2
Userland/Libraries/LibWeb/HTML/Parser/HTMLParser.h
View file

@ -61,7 +61,7 @@ public:
DOM::Document& document();
static Vector<JS::Handle<DOM::Node>> parse_html_fragment(DOM::Element& context_element, StringView);
static String serialize_html_fragment(DOM::Node const& node);
static String serialize_html_fragment(DOM::Node const& node, DOM::FragmentSerializationMode = DOM::FragmentSerializationMode::Inner);
enum class InsertionMode {
#define __ENUMERATE_INSERTION_MODE(mode) mode,