f150134de9
Instead of branching on the Node type, let subclasses decide how their layout nodes get constructed. This will allow elements to create custom layout nodes if they want.
85 lines
2.7 KiB
C++
85 lines
2.7 KiB
C++
#include <AK/StringBuilder.h>
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#include <LibHTML/CSS/StyleResolver.h>
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#include <LibHTML/DOM/Element.h>
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#include <LibHTML/DOM/HTMLAnchorElement.h>
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#include <LibHTML/DOM/Node.h>
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#include <LibHTML/Layout/LayoutBlock.h>
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#include <LibHTML/Layout/LayoutDocument.h>
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#include <LibHTML/Layout/LayoutInline.h>
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#include <LibHTML/Layout/LayoutNode.h>
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#include <LibHTML/Layout/LayoutText.h>
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Node::Node(Document& document, NodeType type)
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: m_document(document)
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, m_type(type)
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{
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}
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Node::~Node()
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{
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}
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RefPtr<LayoutNode> Node::create_layout_tree(const StyleResolver& resolver, const StyleProperties* parent_properties) const
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{
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auto layout_node = create_layout_node(resolver, parent_properties);
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if (!layout_node)
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return nullptr;
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if (!has_children())
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return layout_node;
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Vector<RefPtr<LayoutNode>> layout_children;
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bool have_inline_children = false;
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bool have_block_children = false;
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static_cast<const ParentNode&>(*this).for_each_child([&](const Node& child) {
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auto layout_child = child.create_layout_tree(resolver, &layout_node->style());
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if (!layout_child)
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return;
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if (!layout_child->is_block())
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have_inline_children = true;
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if (layout_child->is_block())
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have_block_children = true;
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layout_children.append(move(layout_child));
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});
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for (auto layout_child : layout_children)
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if (have_block_children && have_inline_children && !layout_child->is_block()) {
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if (layout_child->is_text() && static_cast<const LayoutText&>(*layout_child).text_for_style(*parent_properties) == " ")
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continue;
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layout_node->inline_wrapper().append_child(*layout_child);
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} else {
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layout_node->append_child(*layout_child);
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}
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return layout_node;
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}
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const HTMLAnchorElement* Node::enclosing_link_element() const
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{
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if (is_element() && tag_name().to_lowercase() == "a")
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return static_cast<const HTMLAnchorElement*>(this);
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return parent() ? parent()->enclosing_link_element() : nullptr;
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}
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const HTMLElement* Node::enclosing_html_element() const
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{
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if (is_html_element())
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return static_cast<const HTMLElement*>(this);
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return parent() ? parent()->enclosing_html_element() : nullptr;
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}
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String Node::text_content() const
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{
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Vector<String> strings;
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StringBuilder builder;
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for (auto* child = first_child(); child; child = child->next_sibling()) {
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auto text = child->text_content();
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if (!text.is_empty()) {
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builder.append(child->text_content());
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builder.append(' ');
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}
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}
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if (builder.length() > 1)
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builder.trim(1);
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return builder.to_string();
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}
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