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https://github.com/LadybirdBrowser/ladybird.git
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d19d4da14a
This patch moves the Selector object model closer to the specification
objects in Selectors Level 4.
A "Selector" in LibHTML is now a { Vector<ComplexSelector> }, which is
a { Relation, CompoundSelector }. A CompoundSelector is really just
a Vector<SimpleSelector>, and SimpleSelector is "Component" renamed.
This makes a lot more selectors actually match on the Ubuntu Apache2
default homepage. :^)
228 lines
9 KiB
C++
228 lines
9 KiB
C++
#include <AK/Utf8View.h>
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#include <LibHTML/CSS/PropertyID.h>
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#include <LibHTML/CSS/StyleSheet.h>
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#include <LibHTML/DOM/Comment.h>
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#include <LibHTML/DOM/Document.h>
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#include <LibHTML/DOM/DocumentType.h>
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#include <LibHTML/DOM/Element.h>
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#include <LibHTML/DOM/Text.h>
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#include <LibHTML/Dump.h>
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#include <LibHTML/Layout/LayoutBlock.h>
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#include <LibHTML/Layout/LayoutNode.h>
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#include <LibHTML/Layout/LayoutText.h>
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#include <stdio.h>
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void dump_tree(const Node& node)
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{
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static int indent = 0;
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for (int i = 0; i < indent; ++i)
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dbgprintf(" ");
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if (is<Document>(node)) {
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dbgprintf("*Document*\n");
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} else if (is<Element>(node)) {
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dbgprintf("<%s", to<Element>(node).tag_name().characters());
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to<Element>(node).for_each_attribute([](auto& name, auto& value) {
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dbgprintf(" %s=%s", name.characters(), value.characters());
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});
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dbgprintf(">\n");
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} else if (is<Text>(node)) {
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dbgprintf("\"%s\"\n", static_cast<const Text&>(node).data().characters());
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} else if (is<DocumentType>(node)) {
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dbgprintf("<!DOCTYPE>\n");
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} else if (is<Comment>(node)) {
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dbgprintf("<!--%s-->\n", to<Comment>(node).data().characters());
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}
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++indent;
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if (is<ParentNode>(node)) {
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static_cast<const ParentNode&>(node).for_each_child([](auto& child) {
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dump_tree(child);
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});
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}
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--indent;
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}
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void dump_tree(const LayoutNode& layout_node)
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{
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static int indent = 0;
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for (int i = 0; i < indent; ++i)
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dbgprintf(" ");
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String tag_name;
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if (layout_node.is_anonymous())
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tag_name = "(anonymous)";
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else if (is<Text>(layout_node.node()))
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tag_name = "#text";
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else if (is<Document>(layout_node.node()))
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tag_name = "#document";
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else if (is<Element>(layout_node.node()))
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tag_name = to<Element>(*layout_node.node()).tag_name();
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else
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tag_name = "???";
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if (!layout_node.is_box()) {
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dbgprintf("%s {%s}\n", layout_node.class_name(), tag_name.characters());
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} else {
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auto& layout_box = to<LayoutBox>(layout_node);
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dbgprintf("%s {%s} at (%g,%g) size %gx%g",
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layout_box.class_name(),
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tag_name.characters(),
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layout_box.x(),
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layout_box.y(),
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layout_box.width(),
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layout_box.height());
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// Dump the horizontal box properties
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dbgprintf(" [%g+%g+%g %g %g+%g+%g]",
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layout_box.box_model().margin().left.to_px(),
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layout_box.box_model().border().left.to_px(),
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layout_box.box_model().padding().left.to_px(),
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layout_box.width(),
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layout_box.box_model().padding().right.to_px(),
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layout_box.box_model().border().right.to_px(),
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layout_box.box_model().margin().right.to_px());
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// And the vertical box properties
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dbgprintf(" [%g+%g+%g %g %g+%g+%g]",
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layout_box.box_model().margin().top.to_px(),
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layout_box.box_model().border().top.to_px(),
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layout_box.box_model().padding().top.to_px(),
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layout_box.height(),
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layout_box.box_model().padding().bottom.to_px(),
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layout_box.box_model().border().bottom.to_px(),
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layout_box.box_model().margin().bottom.to_px());
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dbgprintf("\n");
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}
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if (layout_node.is_block() && static_cast<const LayoutBlock&>(layout_node).children_are_inline()) {
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auto& block = static_cast<const LayoutBlock&>(layout_node);
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for (int i = 0; i < indent; ++i)
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dbgprintf(" ");
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dbgprintf(" Line boxes (%d):\n", block.line_boxes().size());
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for (int line_box_index = 0; line_box_index < block.line_boxes().size(); ++line_box_index) {
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auto& line_box = block.line_boxes()[line_box_index];
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for (int i = 0; i < indent; ++i)
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dbgprintf(" ");
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dbgprintf(" [%d] width: %g\n", line_box_index, line_box.width());
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for (int fragment_index = 0; fragment_index < line_box.fragments().size(); ++fragment_index) {
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auto& fragment = line_box.fragments()[fragment_index];
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for (int i = 0; i < indent; ++i)
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dbgprintf(" ");
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dbgprintf(" [%d] layout_node: %s{%p}, start: %d, length: %d, rect: %s\n",
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fragment_index,
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fragment.layout_node().class_name(),
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&fragment.layout_node(),
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fragment.start(),
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fragment.length(),
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fragment.rect().to_string().characters());
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if (fragment.layout_node().is_text()) {
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for (int i = 0; i < indent; ++i)
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dbgprintf(" ");
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auto& layout_text = static_cast<const LayoutText&>(fragment.layout_node());
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auto fragment_text = layout_text.text_for_rendering().substring(fragment.start(), fragment.length());
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dbgprintf(" text: \"%s\"\n", fragment_text.characters());
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}
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}
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}
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}
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layout_node.style().for_each_property([&](auto property_id, auto& value) {
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for (int i = 0; i < indent; ++i)
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dbgprintf(" ");
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dbgprintf(" (%s: %s)\n", CSS::string_from_property_id(property_id), value.to_string().characters());
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});
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++indent;
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layout_node.for_each_child([](auto& child) {
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dump_tree(child);
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});
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--indent;
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}
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void dump_rule(const StyleRule& rule)
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{
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dbgprintf("Rule:\n");
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for (auto& selector : rule.selectors()) {
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dbgprintf(" Selector:\n");
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for (auto& complex_selector : selector.complex_selectors()) {
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dbgprintf(" ");
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const char* relation_description = "";
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switch (complex_selector.relation) {
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case Selector::ComplexSelector::Relation::None:
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break;
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case Selector::ComplexSelector::Relation::ImmediateChild:
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relation_description = "ImmediateChild";
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break;
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case Selector::ComplexSelector::Relation::Descendant:
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relation_description = "Descendant";
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break;
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case Selector::ComplexSelector::Relation::AdjacentSibling:
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relation_description = "AdjacentSibling";
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break;
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case Selector::ComplexSelector::Relation::GeneralSibling:
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relation_description = "GeneralSibling";
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break;
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}
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if (*relation_description)
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dbgprintf("{%s} ", relation_description);
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for (int i = 0; i < complex_selector.compound_selector.size(); ++i) {
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auto& simple_selector = complex_selector.compound_selector[i];
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const char* type_description = "Unknown";
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switch (simple_selector.type) {
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case Selector::SimpleSelector::Type::Invalid:
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type_description = "Invalid";
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break;
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case Selector::SimpleSelector::Type::Universal:
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type_description = "Universal";
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break;
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case Selector::SimpleSelector::Type::Id:
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type_description = "Id";
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break;
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case Selector::SimpleSelector::Type::Class:
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type_description = "Class";
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break;
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case Selector::SimpleSelector::Type::TagName:
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type_description = "TagName";
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break;
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}
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const char* attribute_match_type_description = "";
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switch (simple_selector.attribute_match_type) {
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case Selector::SimpleSelector::AttributeMatchType::None:
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break;
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case Selector::SimpleSelector::AttributeMatchType::HasAttribute:
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attribute_match_type_description = "HasAttribute";
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break;
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case Selector::SimpleSelector::AttributeMatchType::ExactValueMatch:
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attribute_match_type_description = "ExactValueMatch";
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break;
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}
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dbgprintf("%s:%s", type_description, simple_selector.value.characters());
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if (simple_selector.attribute_match_type != Selector::SimpleSelector::AttributeMatchType::None) {
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dbgprintf(" [%s, name='%s', value='%s']", attribute_match_type_description, simple_selector.attribute_name.characters(), simple_selector.attribute_value.characters());
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}
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if (i != complex_selector.compound_selector.size() - 1)
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dbgprintf(", ");
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}
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dbgprintf("\n");
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}
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}
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dbgprintf(" Declarations:\n");
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for (auto& property : rule.declaration().properties()) {
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dbgprintf(" %s: '%s'\n", CSS::string_from_property_id(property.property_id), property.value->to_string().characters());
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}
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}
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void dump_sheet(const StyleSheet& sheet)
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{
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dbgprintf("StyleSheet{%p}: %d rule(s)\n", &sheet, sheet.rules().size());
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for (auto& rule : sheet.rules()) {
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dump_rule(rule);
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}
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}
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