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Browser: Add Accessibility Tab to Inspector Widget

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This tab allows you to view the accessibility tree like you do
the DOM tree. The implementation limited to the role currently,
once we add the name and description calculation algorithm, those
will be displayed here as well. Selections are also not currently
supported.
This commit is contained in:
Jonah 2022-12-28 17:26:23 -06:00 • committed by Sam Atkins
parent 367b1634fd
commit e361025cfb
6 changed files with 203 additions and 1 deletions
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61
Userland/Libraries/LibWebView/AccessibilityTreeModel.h Normal file
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/*
* Copyright (c) 2022, Jonah Shafran <jonahshafran@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/JsonObject.h>
#include <LibGUI/Model.h>
#include <LibWeb/CSS/Selector.h>
namespace WebView {
class AccessibilityTreeModel final : public GUI::Model {
public:
static NonnullRefPtr<AccessibilityTreeModel> create(StringView accessibility_tree, GUI::TreeView& tree_view)
{
auto json_or_error = JsonValue::from_string(accessibility_tree).release_value_but_fixme_should_propagate_errors();
return adopt_ref(*new AccessibilityTreeModel(json_or_error.as_object(), &tree_view));
}
static NonnullRefPtr<AccessibilityTreeModel> create(StringView accessibility_tree)
{
auto json_or_error = JsonValue::from_string(accessibility_tree).release_value_but_fixme_should_propagate_errors();
return adopt_ref(*new AccessibilityTreeModel(json_or_error.as_object(), nullptr));
}
virtual ~AccessibilityTreeModel() override;
virtual int row_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override;
virtual int column_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override;
virtual GUI::Variant data(GUI::ModelIndex const&, GUI::ModelRole) const override;
virtual GUI::ModelIndex index(int row, int column, GUI::ModelIndex const& parent = GUI::ModelIndex()) const override;
virtual GUI::ModelIndex parent_index(GUI::ModelIndex const&) const override;
private:
AccessibilityTreeModel(JsonObject, GUI::TreeView*);
ALWAYS_INLINE JsonObject const* get_parent(JsonObject const& o) const
{
auto parent_node = m_accessibility_node_to_parent_map.get(&o);
VERIFY(parent_node.has_value());
return *parent_node;
}
ALWAYS_INLINE static JsonArray const* get_children(JsonObject const& o)
{
if (auto const* maybe_children = o.get_ptr("children"sv); maybe_children)
return &maybe_children->as_array();
return nullptr;
}
void map_accessibility_nodes_to_parent(JsonObject const* parent, JsonObject const* child);
GUI::TreeView* m_tree_view { nullptr };
JsonObject m_accessibility_tree;
HashMap<JsonObject const*, JsonObject const*> m_accessibility_node_to_parent_map;
};
}