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121 lines
3.9 KiB
C++
121 lines
3.9 KiB
C++
/*
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* Copyright (c) 2022, Jonah Shafran <jonahshafran@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWebView/AccessibilityTreeModel.h>
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namespace WebView {
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AccessibilityTreeModel::AccessibilityTreeModel(JsonObject accessibility_tree, GUI::TreeView* tree_view)
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: m_tree_view(tree_view)
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, m_accessibility_tree(move(accessibility_tree))
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{
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map_accessibility_nodes_to_parent(nullptr, &m_accessibility_tree);
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}
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AccessibilityTreeModel::~AccessibilityTreeModel() = default;
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GUI::ModelIndex AccessibilityTreeModel::index(int row, int column, GUI::ModelIndex const& parent) const
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{
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if (!parent.is_valid()) {
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return create_index(row, column, &m_accessibility_tree);
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}
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auto const& parent_node = *static_cast<JsonObject const*>(parent.internal_data());
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auto children = get_children(parent_node);
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if (!children.has_value())
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return create_index(row, column, &m_accessibility_tree);
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auto const& child_node = children->at(row).as_object();
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return create_index(row, column, &child_node);
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}
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GUI::ModelIndex AccessibilityTreeModel::parent_index(GUI::ModelIndex const& index) const
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{
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if (!index.is_valid())
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return {};
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auto const& node = *static_cast<JsonObject const*>(index.internal_data());
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auto const* parent_node = get_parent(node);
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if (!parent_node)
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return {};
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// If the parent is the root document, we know it has index 0, 0
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if (parent_node == &m_accessibility_tree) {
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return create_index(0, 0, parent_node);
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}
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// Otherwise, we need to find the grandparent, to find the index of parent within that
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auto const* grandparent_node = get_parent(*parent_node);
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VERIFY(grandparent_node);
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auto grandparent_children = get_children(*grandparent_node);
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if (!grandparent_children.has_value())
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return {};
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for (size_t grandparent_child_index = 0; grandparent_child_index < grandparent_children->size(); ++grandparent_child_index) {
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auto const& child = grandparent_children->at(grandparent_child_index).as_object();
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if (&child == parent_node)
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return create_index(grandparent_child_index, 0, parent_node);
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}
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return {};
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}
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int AccessibilityTreeModel::row_count(GUI::ModelIndex const& index) const
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{
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if (!index.is_valid())
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return 1;
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auto const& node = *static_cast<JsonObject const*>(index.internal_data());
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auto children = get_children(node);
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return children.has_value() ? children->size() : 0;
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}
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int AccessibilityTreeModel::column_count(const GUI::ModelIndex&) const
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{
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return 1;
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}
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GUI::Variant AccessibilityTreeModel::data(GUI::ModelIndex const& index, GUI::ModelRole role) const
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{
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auto const& node = *static_cast<JsonObject const*>(index.internal_data());
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auto type = node.get_deprecated_string("type"sv).value_or("unknown"sv);
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if (role == GUI::ModelRole::Display) {
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if (type == "text")
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return node.get_deprecated_string("text"sv).value();
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auto node_role = node.get_deprecated_string("role"sv).value();
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if (type != "element")
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return node_role;
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auto name = node.get_deprecated_string("name"sv).value_or("");
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auto description = node.get_deprecated_string("description"sv).value_or("");
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StringBuilder builder;
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builder.append(node_role.to_lowercase());
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builder.appendff(" name: \"{}\", description: \"{}\"", name, description);
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return builder.to_deprecated_string();
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}
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return {};
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}
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void AccessibilityTreeModel::map_accessibility_nodes_to_parent(JsonObject const* parent, JsonObject const* node)
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{
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m_accessibility_node_to_parent_map.set(node, parent);
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auto children = get_children(*node);
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if (!children.has_value())
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return;
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children->for_each([&](auto const& child) {
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auto const& child_node = child.as_object();
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map_accessibility_nodes_to_parent(node, &child_node);
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});
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}
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}
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