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ladybird/Userland/Libraries/LibWeb/Dump.cpp
Sam Atkins 96b2356cbb LibWeb: Add 'Attribute' as a CSS SimpleSelector::Type 
Previously, SimpleSelectors optionally had Attribute-selector data
as well as their main type. Now, they're either one or the other,
which better matches the spec, and makes parsing and matching more
straightforward.
2021-07-14 13:31:00 +02:00

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/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/QuickSort.h>
#include <AK/StringBuilder.h>
#include <AK/Utf8View.h>
#include <LibWeb/CSS/CSSImportRule.h>
#include <LibWeb/CSS/CSSRule.h>
#include <LibWeb/CSS/CSSStyleRule.h>
#include <LibWeb/CSS/CSSStyleSheet.h>
#include <LibWeb/CSS/PropertyID.h>
#include <LibWeb/DOM/Comment.h>
#include <LibWeb/DOM/Document.h>
#include <LibWeb/DOM/Element.h>
#include <LibWeb/DOM/ShadowRoot.h>
#include <LibWeb/DOM/Text.h>
#include <LibWeb/Dump.h>
#include <LibWeb/HTML/HTMLTemplateElement.h>
#include <LibWeb/Layout/BlockBox.h>
#include <LibWeb/Layout/Node.h>
#include <LibWeb/Layout/TextNode.h>
#include <stdio.h>
namespace Web {
void dump_tree(DOM::Node const& node)
{
StringBuilder builder;
dump_tree(builder, node);
dbgln("{}", builder.string_view());
}
void dump_tree(StringBuilder& builder, DOM::Node const& node)
{
static int indent = 0;
for (int i = 0; i < indent; ++i)
builder.append(" ");
if (is<DOM::Element>(node)) {
builder.appendff("<{}", verify_cast<DOM::Element>(node).local_name());
verify_cast<DOM::Element>(node).for_each_attribute([&](auto& name, auto& value) {
builder.appendff(" {}={}", name, value);
});
builder.append(">\n");
} else if (is<DOM::Text>(node)) {
builder.appendff("\"{}\"\n", verify_cast<DOM::Text>(node).data());
} else {
builder.appendff("{}\n", node.node_name());
}
++indent;
if (is<DOM::Element>(node) && verify_cast<DOM::Element>(node).shadow_root()) {
dump_tree(*verify_cast<DOM::Element>(node).shadow_root());
}
if (is<DOM::ParentNode>(node)) {
if (!is<HTML::HTMLTemplateElement>(node)) {
static_cast<DOM::ParentNode const&>(node).for_each_child([](auto& child) {
dump_tree(child);
});
} else {
auto& template_element = verify_cast<HTML::HTMLTemplateElement>(node);
dump_tree(template_element.content());
}
}
--indent;
}
void dump_tree(Layout::Node const& layout_node, bool show_box_model, bool show_specified_style)
{
StringBuilder builder;
dump_tree(builder, layout_node, show_box_model, show_specified_style, true);
dbgln("{}", builder.string_view());
}
void dump_tree(StringBuilder& builder, Layout::Node const& layout_node, bool show_box_model, bool show_specified_style, bool interactive)
{
static size_t indent = 0;
for (size_t i = 0; i < indent; ++i)
builder.append(" ");
FlyString tag_name;
if (layout_node.is_anonymous())
tag_name = "(anonymous)";
else if (is<DOM::Element>(layout_node.dom_node()))
tag_name = verify_cast<DOM::Element>(*layout_node.dom_node()).local_name();
else
tag_name = layout_node.dom_node()->node_name();
String identifier = "";
if (layout_node.dom_node() && is<DOM::Element>(*layout_node.dom_node())) {
auto& element = verify_cast<DOM::Element>(*layout_node.dom_node());
StringBuilder builder;
auto id = element.attribute(HTML::AttributeNames::id);
if (!id.is_empty()) {
builder.append('#');
builder.append(id);
}
for (auto& class_name : element.class_names()) {
builder.append('.');
builder.append(class_name);
}
identifier = builder.to_string();
}
char const* nonbox_color_on = "";
char const* box_color_on = "";
char const* positioned_color_on = "";
char const* floating_color_on = "";
char const* inline_block_color_on = "";
char const* line_box_color_on = "";
char const* fragment_color_on = "";
char const* flex_color_on = "";
char const* color_off = "";
if (interactive) {
nonbox_color_on = "\033[33m";
box_color_on = "\033[34m";
positioned_color_on = "\033[31;1m";
floating_color_on = "\033[32;1m";
inline_block_color_on = "\033[36;1m";
line_box_color_on = "\033[34;1m";
fragment_color_on = "\033[35;1m";
flex_color_on = "\033[34;1m";
color_off = "\033[0m";
}
if (!is<Layout::Box>(layout_node)) {
builder.appendff("{}{}{} <{}{}{}{}>",
nonbox_color_on,
layout_node.class_name().substring_view(13),
color_off,
tag_name,
nonbox_color_on,
identifier,
color_off);
if (interactive)
builder.appendff(" @{:p}", &layout_node);
builder.append("\n");
} else {
auto& box = verify_cast<Layout::Box>(layout_node);
builder.appendff("{}{}{} <{}{}{}{}> ",
box_color_on,
box.class_name().substring_view(13),
color_off,
box_color_on,
tag_name,
color_off,
identifier.characters());
if (interactive)
builder.appendff("@{:p} ", &layout_node);
builder.appendff("at ({},{}) size {}x{}",
(int)box.absolute_x(),
(int)box.absolute_y(),
(int)box.width(),
(int)box.height());
if (box.is_positioned())
builder.appendff(" {}positioned{}", positioned_color_on, color_off);
if (box.is_floating())
builder.appendff(" {}floating{}", floating_color_on, color_off);
if (box.is_inline_block())
builder.appendff(" {}inline-block{}", inline_block_color_on, color_off);
if (box.computed_values().display() == CSS::Display::Flex)
builder.appendff(" {}flex-container{}", flex_color_on, color_off);
if (box.is_flex_item())
builder.appendff(" {}flex-item{}", flex_color_on, color_off);
if (show_box_model) {
// Dump the horizontal box properties
builder.appendff(" [{}+{}+{} {} {}+{}+{}]",
box.box_model().margin.left,
box.box_model().border.left,
box.box_model().padding.left,
box.width(),
box.box_model().padding.right,
box.box_model().border.right,
box.box_model().margin.right);
// And the vertical box properties
builder.appendff(" [{}+{}+{} {} {}+{}+{}]",
box.box_model().margin.top,
box.box_model().border.top,
box.box_model().padding.top,
box.height(),
box.box_model().padding.bottom,
box.box_model().border.bottom,
box.box_model().margin.bottom);
}
builder.append("\n");
}
if (is<Layout::BlockBox>(layout_node) && static_cast<Layout::BlockBox const&>(layout_node).children_are_inline()) {
auto& block = static_cast<Layout::BlockBox const&>(layout_node);
for (size_t line_box_index = 0; line_box_index < block.line_boxes().size(); ++line_box_index) {
auto& line_box = block.line_boxes()[line_box_index];
for (size_t i = 0; i < indent; ++i)
builder.append(" ");
builder.appendff(" {}line {}{} width: {}\n",
line_box_color_on,
line_box_index,
color_off,
(int)line_box.width());
for (size_t fragment_index = 0; fragment_index < line_box.fragments().size(); ++fragment_index) {
auto& fragment = line_box.fragments()[fragment_index];
for (size_t i = 0; i < indent; ++i)
builder.append(" ");
builder.appendff(" {}frag {}{} from {} ",
fragment_color_on,
fragment_index,
color_off,
fragment.layout_node().class_name());
if (interactive)
builder.appendff("@{:p}, ", &fragment.layout_node());
builder.appendff("start: {}, length: {}, rect: {}\n",
fragment.start(),
fragment.length(),
enclosing_int_rect(fragment.absolute_rect()).to_string());
if (is<Layout::TextNode>(fragment.layout_node())) {
for (size_t i = 0; i < indent; ++i)
builder.append(" ");
auto& layout_text = static_cast<Layout::TextNode const&>(fragment.layout_node());
auto fragment_text = layout_text.text_for_rendering().substring(fragment.start(), fragment.length());
builder.appendff(" \"{}\"\n", fragment_text);
}
}
}
}
if (show_specified_style && layout_node.dom_node() && layout_node.dom_node()->is_element() && verify_cast<DOM::Element>(layout_node.dom_node())->specified_css_values()) {
struct NameAndValue {
String name;
String value;
};
Vector<NameAndValue> properties;
verify_cast<DOM::Element>(*layout_node.dom_node()).specified_css_values()->for_each_property([&](auto property_id, auto& value) {
properties.append({ CSS::string_from_property_id(property_id), value.to_string() });
});
quick_sort(properties, [](auto& a, auto& b) { return a.name < b.name; });
for (auto& property : properties) {
for (size_t i = 0; i < indent; ++i)
builder.append(" ");
builder.appendff(" ({}: {})\n", property.name, property.value);
}
}
++indent;
layout_node.for_each_child([&](auto& child) {
dump_tree(builder, child, show_box_model, show_specified_style, interactive);
});
--indent;
}
void dump_selector(CSS::Selector const& selector)
{
StringBuilder builder;
dump_selector(builder, selector);
dbgln("{}", builder.string_view());
}
void dump_selector(StringBuilder& builder, CSS::Selector const& selector)
{
builder.append(" CSS::Selector:\n");
for (auto& complex_selector : selector.complex_selectors()) {
builder.append(" ");
char const* relation_description = "";
switch (complex_selector.relation) {
case CSS::Selector::ComplexSelector::Relation::None:
relation_description = "None";
break;
case CSS::Selector::ComplexSelector::Relation::ImmediateChild:
relation_description = "ImmediateChild";
break;
case CSS::Selector::ComplexSelector::Relation::Descendant:
relation_description = "Descendant";
break;
case CSS::Selector::ComplexSelector::Relation::AdjacentSibling:
relation_description = "AdjacentSibling";
break;
case CSS::Selector::ComplexSelector::Relation::GeneralSibling:
relation_description = "GeneralSibling";
break;
case CSS::Selector::ComplexSelector::Relation::Column:
relation_description = "Column";
break;
}
if (*relation_description)
builder.appendff("{{{}}} ", relation_description);
for (size_t i = 0; i < complex_selector.compound_selector.size(); ++i) {
auto& simple_selector = complex_selector.compound_selector[i];
char const* type_description = "Unknown";
switch (simple_selector.type) {
case CSS::Selector::SimpleSelector::Type::Invalid:
type_description = "Invalid";
break;
case CSS::Selector::SimpleSelector::Type::Universal:
type_description = "Universal";
break;
case CSS::Selector::SimpleSelector::Type::Id:
type_description = "Id";
break;
case CSS::Selector::SimpleSelector::Type::Class:
type_description = "Class";
break;
case CSS::Selector::SimpleSelector::Type::TagName:
type_description = "TagName";
break;
case CSS::Selector::SimpleSelector::Type::Attribute:
type_description = "Attribute";
break;
}
char const* pseudo_class_description = "";
switch (simple_selector.pseudo_class) {
case CSS::Selector::SimpleSelector::PseudoClass::Link:
pseudo_class_description = "Link";
break;
case CSS::Selector::SimpleSelector::PseudoClass::Visited:
pseudo_class_description = "Visited";
break;
case CSS::Selector::SimpleSelector::PseudoClass::Active:
pseudo_class_description = "Active";
break;
case CSS::Selector::SimpleSelector::PseudoClass::None:
pseudo_class_description = "None";
break;
case CSS::Selector::SimpleSelector::PseudoClass::Root:
pseudo_class_description = "Root";
break;
case CSS::Selector::SimpleSelector::PseudoClass::FirstOfType:
pseudo_class_description = "FirstOfType";
break;
case CSS::Selector::SimpleSelector::PseudoClass::LastOfType:
pseudo_class_description = "LastOfType";
break;
case CSS::Selector::SimpleSelector::PseudoClass::NthChild:
pseudo_class_description = "NthChild";
break;
case CSS::Selector::SimpleSelector::PseudoClass::NthLastChild:
pseudo_class_description = "NthLastChild";
break;
case CSS::Selector::SimpleSelector::PseudoClass::Focus:
pseudo_class_description = "Focus";
break;
case CSS::Selector::SimpleSelector::PseudoClass::Empty:
pseudo_class_description = "Empty";
break;
case CSS::Selector::SimpleSelector::PseudoClass::Hover:
pseudo_class_description = "Hover";
break;
case CSS::Selector::SimpleSelector::PseudoClass::LastChild:
pseudo_class_description = "LastChild";
break;
case CSS::Selector::SimpleSelector::PseudoClass::FirstChild:
pseudo_class_description = "FirstChild";
break;
case CSS::Selector::SimpleSelector::PseudoClass::OnlyChild:
pseudo_class_description = "OnlyChild";
break;
case CSS::Selector::SimpleSelector::PseudoClass::Disabled:
pseudo_class_description = "Disabled";
break;
case CSS::Selector::SimpleSelector::PseudoClass::Enabled:
pseudo_class_description = "Enabled";
break;
case CSS::Selector::SimpleSelector::PseudoClass::Checked:
pseudo_class_description = "Checked";
break;
case CSS::Selector::SimpleSelector::PseudoClass::Not:
pseudo_class_description = "Not";
break;
}
builder.appendff("{}:{}", type_description, simple_selector.value);
if (simple_selector.pseudo_class != CSS::Selector::SimpleSelector::PseudoClass::None)
builder.appendff(" pseudo_class={}", pseudo_class_description);
if (simple_selector.type == CSS::Selector::SimpleSelector::Type::Attribute) {
char const* attribute_match_type_description = "";
switch (simple_selector.attribute.match_type) {
case CSS::Selector::SimpleSelector::Attribute::MatchType::None:
break;
case CSS::Selector::SimpleSelector::Attribute::MatchType::HasAttribute:
type_description = "HasAttribute";
break;
case CSS::Selector::SimpleSelector::Attribute::MatchType::ExactValueMatch:
type_description = "ExactValueMatch";
break;
case CSS::Selector::SimpleSelector::Attribute::MatchType::ContainsWord:
type_description = "ContainsWord";
break;
case CSS::Selector::SimpleSelector::Attribute::MatchType::ContainsString:
type_description = "ContainsString";
break;
case CSS::Selector::SimpleSelector::Attribute::MatchType::StartsWithSegment:
type_description = "StartsWithSegment";
break;
case CSS::Selector::SimpleSelector::Attribute::MatchType::StartsWithString:
type_description = "StartsWithString";
break;
case CSS::Selector::SimpleSelector::Attribute::MatchType::EndsWithString:
type_description = "EndsWithString";
break;
}
break;
builder.appendff(" [{}, name='{}', value='{}']", attribute_match_type_description, simple_selector.attribute.name, simple_selector.attribute.value);
}
if (i != complex_selector.compound_selector.size() - 1)
builder.append(", ");
}
builder.append("\n");
}
}
void dump_rule(CSS::CSSRule const& rule)
{
StringBuilder builder;
dump_rule(builder, rule);
dbgln("{}", builder.string_view());
}
void dump_rule(StringBuilder& builder, CSS::CSSRule const& rule)
{
builder.appendff("{}:\n", rule.class_name());
switch (rule.type()) {
case CSS::CSSRule::Type::Style:
dump_style_rule(builder, verify_cast<CSS::CSSStyleRule const>(rule));
break;
case CSS::CSSRule::Type::Import:
dump_import_rule(builder, verify_cast<CSS::CSSImportRule const>(rule));
break;
default:
VERIFY_NOT_REACHED();
}
}
void dump_import_rule(StringBuilder& builder, CSS::CSSImportRule const& rule)
{
builder.appendff(" Document URL: {}\n", rule.url());
}
void dump_style_rule(StringBuilder& builder, CSS::CSSStyleRule const& rule)
{
for (auto& selector : rule.selectors()) {
dump_selector(builder, selector);
}
builder.append(" Declarations:\n");
for (auto& property : rule.declaration().properties()) {
builder.appendff(" {}: '{}'\n", CSS::string_from_property_id(property.property_id), property.value->to_string());
}
}
void dump_sheet(CSS::StyleSheet const& sheet)
{
StringBuilder builder;
dump_sheet(builder, sheet);
dbgln("{}", builder.string_view());
}
void dump_sheet(StringBuilder& builder, CSS::StyleSheet const& sheet)
{
auto& css_stylesheet = verify_cast<CSS::CSSStyleSheet>(sheet);
builder.appendff("CSSStyleSheet{{{}}}: {} rule(s)\n", &sheet, css_stylesheet.rules().size());
for (auto& rule : css_stylesheet.rules()) {
dump_rule(builder, rule);
}
}
}
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