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/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "LayoutTreeModel.h"
#include <AK/StringBuilder.h>
#include <LibWeb/DOM/Document.h>
#include <LibWeb/DOM/Element.h>
#include <LibWeb/Layout/InitialContainingBlockBox.h>
#include <LibWeb/Layout/TextNode.h>
#include <ctype.h>
#include <stdio.h>
namespace Web {
LayoutTreeModel::LayoutTreeModel(DOM::Document& document)
: m_document(document)
{
m_document_icon.set_bitmap_for_size(16, Gfx::Bitmap::try_load_from_file("/res/icons/16x16/filetype-html.png"));
m_element_icon.set_bitmap_for_size(16, Gfx::Bitmap::try_load_from_file("/res/icons/16x16/inspector-object.png"));
m_text_icon.set_bitmap_for_size(16, Gfx::Bitmap::try_load_from_file("/res/icons/16x16/filetype-unknown.png"));
}
LayoutTreeModel::~LayoutTreeModel()
{
}
GUI::ModelIndex LayoutTreeModel::index(int row, int column, const GUI::ModelIndex& parent) const
{
if (!parent.is_valid())
return create_index(row, column, m_document->layout_node());
auto& parent_node = *static_cast<Layout::Node*>(parent.internal_data());
return create_index(row, column, parent_node.child_at_index(row));
}
GUI::ModelIndex LayoutTreeModel::parent_index(const GUI::ModelIndex& index) const
{
if (!index.is_valid())
return {};
auto& node = *static_cast<Layout::Node*>(index.internal_data());
if (!node.parent())
return {};
// No grandparent? Parent is the document!
if (!node.parent()->parent()) {
return create_index(0, 0, m_document->layout_node());
}
// Walk the grandparent's children to find the index of node's parent in its parent.
// (This is needed to produce the row number of the GUI::ModelIndex corresponding to node's parent.)
int grandparent_child_index = 0;
for (auto* grandparent_child = node.parent()->parent()->first_child(); grandparent_child; grandparent_child = grandparent_child->next_sibling()) {
if (grandparent_child == node.parent())
return create_index(grandparent_child_index, 0, node.parent());
++grandparent_child_index;
}
VERIFY_NOT_REACHED();
return {};
}
int LayoutTreeModel::row_count(const GUI::ModelIndex& index) const
{
if (!index.is_valid())
return 1;
auto& node = *static_cast<Layout::Node*>(index.internal_data());
return node.child_count();
}
int LayoutTreeModel::column_count(const GUI::ModelIndex&) const
{
return 1;
}
static String with_whitespace_collapsed(const StringView& string)
{
StringBuilder builder;
for (size_t i = 0; i < string.length(); ++i) {
if (isspace(string[i])) {
builder.append(' ');
while (i < string.length()) {
if (isspace(string[i])) {
++i;
continue;
}
builder.append(string[i]);
break;
}
continue;
}
builder.append(string[i]);
}
return builder.to_string();
}
GUI::Variant LayoutTreeModel::data(const GUI::ModelIndex& index, GUI::ModelRole role) const
{
auto& node = *static_cast<Layout::Node*>(index.internal_data());
if (role == GUI::ModelRole::Icon) {
if (is<Layout::InitialContainingBlockBox>(node))
return m_document_icon;
if (is<Layout::TextNode>(node))
return m_text_icon;
return m_element_icon;
}
if (role == GUI::ModelRole::Display) {
if (is<Layout::TextNode>(node))
return String::formatted("TextNode: {}", with_whitespace_collapsed(verify_cast<Layout::TextNode>(node).text_for_rendering()));
StringBuilder builder;
builder.append(node.class_name());
builder.append(' ');
if (node.is_anonymous()) {
builder.append("[anonymous]");
} else if (!node.dom_node()->is_element()) {
builder.append(node.dom_node()->node_name());
} else {
auto& element = verify_cast<DOM::Element>(*node.dom_node());
builder.append('<');
builder.append(element.local_name());
element.for_each_attribute([&](auto& name, auto& value) {
builder.append(' ');
builder.append(name);
builder.append('=');
builder.append('"');
builder.append(value);
builder.append('"');
});
builder.append('>');
}
return builder.to_string();
}
return {};
}
}
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