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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_RENDERER_ACCESSIBILITY_ANNOTATIONS_AX_MAIN_NODE_ANNOTATOR_H_
#define CONTENT_RENDERER_ACCESSIBILITY_ANNOTATIONS_AX_MAIN_NODE_ANNOTATOR_H_
#include <vector>
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "content/common/content_export.h"
#include "content/renderer/accessibility/annotations/ax_annotator.h"
#include "content/renderer/accessibility/render_accessibility_impl.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "services/screen_ai/public/mojom/screen_ai_service.mojom.h"
namespace blink {
class WebDocument;
} // namespace blink
namespace content {
class CONTENT_EXPORT AXMainNodeAnnotator : public AXAnnotator {
public:
enum AXMainNodeAnnotatorAuthorStatus {
kUnconfirmed = 0,
kAuthorProvidedMain = 1,
kAuthorDidNotProvideMain = 2,
kMaxValue = kUnconfirmed
};
explicit AXMainNodeAnnotator(
RenderAccessibilityImpl* const render_accessibility);
AXMainNodeAnnotator(const AXMainNodeAnnotator&) = delete;
AXMainNodeAnnotator& operator=(const AXMainNodeAnnotator&) = delete;
~AXMainNodeAnnotator() override;
// AXAnnotator:
void Annotate(const blink::WebDocument& document,
ui::AXTreeUpdate* update,
bool load_complete) override;
void EnableAnnotations() override;
void CancelAnnotations() override;
uint32_t GetAXModeToEnableAnnotations() override;
bool HasAXActionToEnableAnnotations() override;
ax::mojom::Action GetAXActionToEnableAnnotations() override;
void AddDebuggingAttributes(
const std::vector<ui::AXTreeUpdate>& updates) override {}
void BindAnnotatorForTesting(
mojo::PendingRemote<screen_ai::mojom::Screen2xMainContentExtractor>
annotator);
private:
void ProcessScreen2xResult(const blink::WebDocument& document,
ui::AXNodeID main_node_id);
void ComputeAuthorStatus(ui::AXTreeUpdate* update);
// Weak, owns us.
const raw_ptr<RenderAccessibilityImpl> render_accessibility_;
bool annotator_enabled_ = false;
// The remote of the Screen2x main content extractor. The receiver lives in
// the utility process.
mojo::Remote<screen_ai::mojom::Screen2xMainContentExtractor>
annotator_remote_;
// The id of the main node identified.
ui::AXNodeID main_node_id_ = ui::kInvalidAXNodeID;
// Whether a main node was provided by the author.
AXMainNodeAnnotatorAuthorStatus author_status_ =
AXMainNodeAnnotatorAuthorStatus::kUnconfirmed;
base::WeakPtrFactory<AXMainNodeAnnotator> weak_ptr_factory_{this};
};
} // namespace content
#endif // CONTENT_RENDERER_ACCESSIBILITY_ANNOTATIONS_AX_MAIN_NODE_ANNOTATOR_H_
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