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#include <AK/StringBuilder.h>
#include <LibHTML/CSS/StyleResolver.h>
#include <LibHTML/DOM/Element.h>
#include <LibHTML/DOM/HTMLAnchorElement.h>
#include <LibHTML/DOM/Node.h>
#include <LibHTML/Layout/LayoutBlock.h>
#include <LibHTML/Layout/LayoutDocument.h>
#include <LibHTML/Layout/LayoutInline.h>
#include <LibHTML/Layout/LayoutNode.h>
#include <LibHTML/Layout/LayoutText.h>
Node::Node(Document& document, NodeType type)
: m_document(document)
, m_type(type)
{
}
Node::~Node()
{
}
RefPtr<LayoutNode> Node::create_layout_node(const StyleResolver& resolver, const StyleProperties* parent_properties) const
{
if (is_document())
return adopt(*new LayoutDocument(static_cast<const Document&>(*this), StyleProperties::create()));
if (is_text())
return adopt(*new LayoutText(static_cast<const Text&>(*this)));
auto style_properties = resolver.resolve_style(static_cast<const Element&>(*this), parent_properties);
auto display_property = style_properties->property("display");
String display = display_property.has_value() ? display_property.release_value()->to_string() : "inline";
if (display == "none")
return nullptr;
if (display == "block" || display == "list-item")
return adopt(*new LayoutBlock(this, move(style_properties)));
if (display == "inline")
return adopt(*new LayoutInline(*this, move(style_properties)));
ASSERT_NOT_REACHED();
}
RefPtr<LayoutNode> Node::create_layout_tree(const StyleResolver& resolver, const StyleProperties* parent_properties) const
{
auto layout_node = create_layout_node(resolver, parent_properties);
if (!layout_node)
return nullptr;
if (!has_children())
return layout_node;
Vector<RefPtr<LayoutNode>> layout_children;
bool have_inline_children = false;
bool have_block_children = false;
static_cast<const ParentNode&>(*this).for_each_child([&](const Node& child) {
auto layout_child = child.create_layout_tree(resolver, &layout_node->style_properties());
if (!layout_child)
return;
if (!layout_child->is_block())
have_inline_children = true;
if (layout_child->is_block())
have_block_children = true;
layout_children.append(move(layout_child));
});
for (auto layout_child : layout_children)
if (have_block_children && have_inline_children && !layout_child->is_block()) {
if (layout_child->is_text() && static_cast<const LayoutText&>(*layout_child).text_for_style(*parent_properties) == " ")
continue;
layout_node->inline_wrapper().append_child(*layout_child);
} else {
layout_node->append_child(*layout_child);
}
return layout_node;
}
const HTMLAnchorElement* Node::enclosing_link_element() const
{
if (is_element() && tag_name().to_lowercase() == "a")
return static_cast<const HTMLAnchorElement*>(this);
return parent() ? parent()->enclosing_link_element() : nullptr;
}
const HTMLElement* Node::enclosing_html_element() const
{
if (is_html_element())
return static_cast<const HTMLElement*>(this);
return parent() ? parent()->enclosing_html_element() : nullptr;
}
String Node::text_content() const
{
Vector<String> strings;
StringBuilder builder;
for (auto* child = first_child(); child; child = child->next_sibling()) {
auto text = child->text_content();
if (!text.is_empty()) {
builder.append(child->text_content());
builder.append(' ');
}
}
if (builder.length() > 1)
builder.trim(1);
return builder.to_string();
}
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