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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 "DOMTreeModel.h"
#include <AK/StringBuilder.h>
#include <LibWeb/DOM/Document.h>
#include <LibWeb/DOM/Element.h>
#include <LibWeb/DOM/Text.h>
#include <ctype.h>
#include <stdio.h>
namespace Web {
DOMTreeModel::DOMTreeModel(DOM::Document& document)
: m_document(document)
{
m_document_icon.set_bitmap_for_size(16, Gfx::Bitmap::load_from_file("/res/icons/16x16/filetype-html.png"));
m_element_icon.set_bitmap_for_size(16, Gfx::Bitmap::load_from_file("/res/icons/16x16/inspector-object.png"));
m_text_icon.set_bitmap_for_size(16, Gfx::Bitmap::load_from_file("/res/icons/16x16/filetype-unknown.png"));
}
DOMTreeModel::~DOMTreeModel()
{
}
GUI::ModelIndex DOMTreeModel::index(int row, int column, const GUI::ModelIndex& parent) const
{
if (!parent.is_valid()) {
return create_index(row, column, m_document.ptr());
}
auto& parent_node = *static_cast<DOM::Node*>(parent.internal_data());
return create_index(row, column, parent_node.child_at_index(row));
}
GUI::ModelIndex DOMTreeModel::parent_index(const GUI::ModelIndex& index) const
{
if (!index.is_valid())
return {};
auto& node = *static_cast<DOM::Node*>(index.internal_data());
if (!node.parent())
return {};
// FIXME: Handle the template element (child elements are not stored in it, all of its children are in its document fragment "content")
// No grandparent? Parent is the document!
if (!node.parent()->parent()) {
return create_index(0, 0, m_document.ptr());
}
// 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;
}
ASSERT_NOT_REACHED();
return {};
}
int DOMTreeModel::row_count(const GUI::ModelIndex& index) const
{
if (!index.is_valid())
return 1;
auto& node = *static_cast<DOM::Node*>(index.internal_data());
return node.child_count();
}
int DOMTreeModel::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 DOMTreeModel::data(const GUI::ModelIndex& index, GUI::ModelRole role) const
{
auto& node = *static_cast<DOM::Node*>(index.internal_data());
if (role == GUI::ModelRole::Icon) {
if (node.is_document())
return m_document_icon;
if (node.is_element())
return m_element_icon;
// FIXME: More node type icons?
return m_text_icon;
}
if (role == GUI::ModelRole::Display) {
if (node.is_text())
return String::format("%s", with_whitespace_collapsed(downcast<DOM::Text>(node).data()).characters());
if (!node.is_element())
return node.node_name();
auto& element = downcast<DOM::Element>(node);
StringBuilder builder;
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 {};
}
void DOMTreeModel::update()
{
did_update();
}
}
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