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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_PAYMENTS_CONTENT_PAYMENT_REQUEST_DISPLAY_MANAGER_H_
#define COMPONENTS_PAYMENTS_CONTENT_PAYMENT_REQUEST_DISPLAY_MANAGER_H_
#include <memory>
#include "base/functional/callback.h"
#include "base/memory/weak_ptr.h"
#include "components/keyed_service/core/keyed_service.h"
#include "content/public/browser/render_frame_host.h"
#include "url/gurl.h"
namespace payments {
class ContentPaymentRequestDelegate;
class PaymentRequest;
// The callback type for functions that need to signal back to the ServiceWorker
// when a window was/failed to open following an openWindow call. The parameter
// indicates whether the call was successful or not.
using PaymentHandlerOpenWindowCallback =
base::OnceCallback<void(bool /* success */,
int /* render_process_id */,
int /* render_frame_id */)>;
// Enum of possible outcomes from a call to
// PaymentRequestDisplayManager::TryShow, used for logging purposes.
//
// These values are persisted to logs. Entries should not be renumbered and
// numeric values should never be reused.
//
// LINT.IfChange(PaymentRequestTryShowOutcome)
enum class PaymentRequestTryShowOutcome {
kAbleToShow = 0,
kCannotShowUnknownReason = 1,
kCannotShowDelegateWasNull = 2,
kCannotShowExistingPaymentRequestSameTab = 3,
kCannotShowExistingPaymentRequestDifferentTab = 4,
kMaxValue = kCannotShowExistingPaymentRequestDifferentTab,
};
// LINT.ThenChange(//tools/metrics/histograms/metadata/payment/enums.xml:PaymentRequestTryShowOutcome)
// This KeyedService is responsible for displaying and hiding Payment Request
// UI. It ensures that only one Payment Request is showing per profile.
class PaymentRequestDisplayManager : public KeyedService {
public:
class DisplayHandle {
public:
DisplayHandle(base::WeakPtr<PaymentRequestDisplayManager> display_manager,
base::WeakPtr<ContentPaymentRequestDelegate> delegate);
DisplayHandle(const DisplayHandle&) = delete;
DisplayHandle& operator=(const DisplayHandle&) = delete;
~DisplayHandle();
void Show(base::WeakPtr<PaymentRequest> request);
void Retry();
// Attempt to display |url| inside the Payment Request dialog and run
// |callback| after navigation is completed, passing true/false to indicate
// success/failure.
void DisplayPaymentHandlerWindow(const GURL& url,
PaymentHandlerOpenWindowCallback callback);
// Returns true after Show() was called.
bool was_shown() const { return was_shown_; }
base::WeakPtr<ContentPaymentRequestDelegate> delegate() {
return delegate_;
}
base::WeakPtr<DisplayHandle> GetWeakPtr();
private:
base::WeakPtr<PaymentRequestDisplayManager> display_manager_;
base::WeakPtr<ContentPaymentRequestDelegate> delegate_;
bool was_shown_ = false;
base::WeakPtrFactory<DisplayHandle> weak_ptr_factory_{this};
};
PaymentRequestDisplayManager();
PaymentRequestDisplayManager(const PaymentRequestDisplayManager&) = delete;
PaymentRequestDisplayManager& operator=(const PaymentRequestDisplayManager&) =
delete;
~PaymentRequestDisplayManager() override;
// If no PaymentRequest is currently showing, returns a unique_ptr to a
// display handle that can be used to display the PaymentRequest dialog. The
// UI is considered open until the handle object is deleted. |callback| is
// called with true if the window is finished opening successfully, false if
// opening it failed.
std::unique_ptr<DisplayHandle> TryShow(
base::WeakPtr<ContentPaymentRequestDelegate> delegate);
void ShowPaymentHandlerWindow(const GURL& url,
PaymentHandlerOpenWindowCallback callback);
base::WeakPtr<PaymentRequestDisplayManager> GetWeakPtr();
private:
void set_current_handle(base::WeakPtr<DisplayHandle> handle) {
current_handle_ = handle;
}
base::WeakPtr<DisplayHandle> current_handle_;
base::WeakPtrFactory<PaymentRequestDisplayManager> weak_ptr_factory_{this};
};
} // namespace payments
#endif // COMPONENTS_PAYMENTS_CONTENT_PAYMENT_REQUEST_DISPLAY_MANAGER_H_
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