1 files changed, 59 insertions, 0 deletions
diff --git a/Userland/Libraries/LibWeb/Layout/TreeBuilder.h b/Userland/Libraries/LibWeb/Layout/TreeBuilder.h
new file mode 100644
index 0000000000..03a87cc287
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+++ b/Userland/Libraries/LibWeb/Layout/TreeBuilder.h
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include <AK/NonnullRefPtrVector.h>
+#include <AK/RefPtr.h>
+#include <LibWeb/Forward.h>
+
+namespace Web::Layout {
+
+class TreeBuilder {
+public:
+    TreeBuilder();
+
+    RefPtr<Layout::Node> build(DOM::Node&);
+
+private:
+    void create_layout_tree(DOM::Node&);
+
+    void push_parent(Layout::NodeWithStyle& node) { m_parent_stack.append(&node); }
+    void pop_parent() { m_parent_stack.take_last(); }
+
+    template<CSS::Display, typename Callback>
+    void for_each_in_tree_with_display(NodeWithStyle& root, Callback);
+
+    void fixup_tables(NodeWithStyle& root);
+    void remove_irrelevant_boxes(NodeWithStyle& root);
+    void generate_missing_child_wrappers(NodeWithStyle& root);
+    void generate_missing_parents(NodeWithStyle& root);
+
+    RefPtr<Layout::Node> m_layout_root;
+    Vector<Layout::NodeWithStyle*> m_parent_stack;
+};
+
+}