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LibWeb: Add Function To Build Accessiblity Tree

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With this patch, the accessibility tree can be build from the root
node of a document. This can then be serialzed and sent to (soon
to come) consumers.
This commit is contained in:
Jonah 2022-12-11 12:38:27 -06:00 • committed by Sam Atkins
parent cd95e5f656
commit 3eef54823a
4 changed files with 118 additions and 0 deletions
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40
Userland/Libraries/LibWeb/DOM/AccessibilityTreeNode.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/JsonObjectSerializer.h>
#include <AK/Vector.h>
#include <LibJS/Heap/Cell.h>
#include <LibWeb/DOM/Node.h>
#include <LibWeb/Forward.h>
namespace Web::DOM {
class AccessibilityTreeNode final : public JS::Cell {
JS_CELL(AccessibilityTreeNode, JS::Cell)
public:
static JS::NonnullGCPtr<AccessibilityTreeNode> create(Document*, DOM::Node const*);
virtual ~AccessibilityTreeNode() override = default;
JS::GCPtr<DOM::Node> value() const { return m_value; }
void set_value(JS::GCPtr<DOM::Node> value) { m_value = value; }
Vector<AccessibilityTreeNode*> children() const { return m_children; }
void append_child(AccessibilityTreeNode* child) { m_children.append(child); }
void serialize_tree_as_json(JsonObjectSerializer<StringBuilder>& object) const;
protected:
virtual void visit_edges(Visitor&) override;
private:
explicit AccessibilityTreeNode(JS::GCPtr<DOM::Node>);
JS::GCPtr<DOM::Node> m_value;
Vector<AccessibilityTreeNode*> m_children;
};
}