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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_COMPANION_TEXT_FINDER_TEXT_FINDER_MANAGER_H_
#define CHROME_BROWSER_COMPANION_TEXT_FINDER_TEXT_FINDER_MANAGER_H_
#include <memory>
#include <unordered_map>
#include <vector>
#include "base/gtest_prod_util.h"
#include "base/memory/weak_ptr.h"
#include "base/unguessable_token.h"
#include "chrome/browser/companion/text_finder/text_finder.h"
#include "content/public/browser/page_user_data.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "third_party/blink/public/mojom/annotation/annotation.mojom.h"
namespace companion {
class TextFinderManager : public content::PageUserData<TextFinderManager> {
public:
using AllDoneCallback = base::OnceCallback<void(
const std::vector<std::pair<std::string, bool>>&)>;
~TextFinderManager() override;
TextFinderManager(const TextFinderManager&) = delete;
TextFinderManager& operator=(const TextFinderManager&) = delete;
// Creates a text finder and adds it to manager. Initializes the text finder
// to perform search through the annotation agent in the renderer process.
// Calls `callback` with the boolean search result indicating found or not
// found. Removes the finder from manager upon finishing searching or agent
// disconnection. Returns the id associated with the created text finder.
std::optional<base::UnguessableToken> CreateTextFinder(
const std::string& text_directive,
TextFinder::FinishedCallback callback);
// Creates multiple text finders for a vector of text directives. Calls
// `all_done_callback` when all text finders finish searching (via
// `base::BarrierCallback`).
void CreateTextFinders(const std::vector<std::string>& text_directives,
AllDoneCallback all_done_callback);
// Returns the number of text finder instances.
size_t Size() const;
private:
friend class content::PageUserData<TextFinderManager>;
friend class TextFinderManagerBaseTest;
FRIEND_TEST_ALL_PREFIXES(TextFinderManagerTest, SingleTextFinderTest);
FRIEND_TEST_ALL_PREFIXES(TextFinderManagerTest, MultiTextFindersTest);
explicit TextFinderManager(content::Page& page);
// Removes the text finder associated with `id`.
void RemoveTextFinder(base::UnguessableToken id);
PAGE_USER_DATA_KEY_DECL();
// Text finders keyed by their unique ids.
std::unordered_map<base::UnguessableToken,
std::unique_ptr<TextFinder>,
base::UnguessableTokenHash>
finder_map_;
// A connection to the annotation agent container on the renderer side to
// bind text finder instances to their agent counterpart.
mojo::Remote<blink::mojom::AnnotationAgentContainer> agent_container_;
base::WeakPtrFactory<TextFinderManager> weak_ptr_factory_{this};
};
} // namespace companion
#endif // CHROME_BROWSER_COMPANION_TEXT_FINDER_TEXT_FINDER_MANAGER_H_
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