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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 CHROME_BROWSER_ASH_PRINTING_PRINT_PREVIEW_PRINT_PREVIEW_DIALOG_CONTROLLER_CROS_H_
#define CHROME_BROWSER_ASH_PRINTING_PRINT_PREVIEW_PRINT_PREVIEW_DIALOG_CONTROLLER_CROS_H_
#include <map>
#include "base/observer_list_types.h"
#include "base/unguessable_token.h"
#include "chrome/browser/ui/webui/ash/print_preview_cros/print_preview_cros_dialog.h"
#include "components/printing/common/print.mojom.h"
namespace ash {
// For ChromeOS print preview, this is a singleton class that is responsible for
// creation and destruction of print preview dialogs. It maintains a 1:1
// relationship between the base::UnguessableToken representation of the
// source's Webcontent and its print dialog.
class PrintPreviewDialogControllerCros
: public printing::print_preview::PrintPreviewCrosDialog ::
PrintPreviewCrosDialogObserver {
public:
// Observer to inform clients that a print dialog has been closed and no
// longer tracked by PrintPreviewDialogControllerCros.
class DialogControllerObserver : public base::CheckedObserver {
public:
~DialogControllerObserver() override = default;
virtual void OnDialogClosed(const base::UnguessableToken& token) = 0;
};
PrintPreviewDialogControllerCros();
PrintPreviewDialogControllerCros(const PrintPreviewDialogControllerCros&) =
delete;
PrintPreviewDialogControllerCros& operator=(
const PrintPreviewDialogControllerCros&) = delete;
~PrintPreviewDialogControllerCros() override;
void AddObserver(DialogControllerObserver* observer);
void RemoveObserver(DialogControllerObserver* observer);
// True if the print preview dialog was successfully created.
// `token` refers to the ID of the webcontent requesting a print dialog.
printing::print_preview::PrintPreviewCrosDialog*
GetOrCreatePrintPreviewDialog(
base::UnguessableToken token,
::printing::mojom::RequestPrintPreviewParams params);
printing::print_preview::PrintPreviewCrosDialog* CreatePrintPreviewDialog(
base::UnguessableToken token,
::printing::mojom::RequestPrintPreviewParams params);
void RemovePrintPreviewDialog(base::UnguessableToken token);
// printing::print_preview::PrintPreviewCrosDialogObserver:
void OnDialogClosed(base::UnguessableToken token) override;
bool HasDialogForToken(base::UnguessableToken token);
private:
struct InitiatorData {
base::UnguessableToken token;
::printing::mojom::RequestPrintPreviewParams request_params;
};
// 1:1 relationship between a print preview dialog and its initiator data.
using PrintPreviewDialogMap =
std::map<printing::print_preview::PrintPreviewCrosDialog*, InitiatorData>;
printing::print_preview::PrintPreviewCrosDialog*
GetPrintPreviewDialogForToken(base::UnguessableToken token);
PrintPreviewDialogMap dialog_initiator_data_map_;
base::ObserverList<DialogControllerObserver> observer_list_;
};
} // namespace ash
#endif // CHROME_BROWSER_ASH_PRINTING_PRINT_PREVIEW_PRINT_PREVIEW_DIALOG_CONTROLLER_CROS_H_
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