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/*
* 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.
*/
#include <LibWeb/DOM/Document.h>
#include <LibWeb/DOM/ParentNode.h>
#include <LibWeb/Layout/Node.h>
#include <LibWeb/Layout/TableBox.h>
#include <LibWeb/Layout/TextNode.h>
#include <LibWeb/Layout/TreeBuilder.h>
namespace Web::Layout {
TreeBuilder::TreeBuilder()
{
}
static RefPtr<Node> create_layout_tree(DOM::Node& node, const CSS::StyleProperties* parent_style)
{
auto layout_node = node.create_layout_node(parent_style);
if (!layout_node)
return nullptr;
if (!node.has_children())
return layout_node;
NonnullRefPtrVector<Node> layout_children;
bool have_inline_children = false;
bool have_noninline_children = false;
downcast<DOM::ParentNode>(node).for_each_child([&](DOM::Node& child) {
auto layout_child = create_layout_tree(child, &layout_node->specified_style());
if (!layout_child)
return;
if (layout_child->is_inline())
have_inline_children = true;
else
have_noninline_children = true;
layout_children.append(layout_child.release_nonnull());
});
for (auto& layout_child : layout_children) {
if (have_noninline_children && have_inline_children && layout_child.is_inline()) {
if (is<TextNode>(layout_child) && downcast<TextNode>(layout_child).text_for_style(*parent_style) == " ")
continue;
layout_node->inline_wrapper().append_child(layout_child);
} else {
layout_node->append_child(layout_child);
}
}
if (have_inline_children && !have_noninline_children)
layout_node->set_children_are_inline(true);
return layout_node;
}
RefPtr<Node> TreeBuilder::build(DOM::Node& node)
{
if (!is<DOM::Document>(node) && node.has_children()) {
dbg() << "FIXME: Support building partial layout trees.";
return nullptr;
}
return create_layout_tree(node, nullptr);
}
}
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