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// Copyright 2019 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_PERMISSIONS_ANDROID_NFC_NFC_SYSTEM_LEVEL_SETTING_H_
#define COMPONENTS_PERMISSIONS_ANDROID_NFC_NFC_SYSTEM_LEVEL_SETTING_H_
#include "base/functional/callback.h"
namespace content {
class WebContents;
}
namespace permissions {
// This class determines whether NFC is enabled system-wide on the device.
class NfcSystemLevelSetting {
public:
virtual ~NfcSystemLevelSetting() = default;
// Returns true if the NFC system level setting can be enabled.
virtual bool IsNfcAccessPossible() = 0;
// Returns true if the NFC system level setting is enabled.
virtual bool IsNfcSystemLevelSettingEnabled() = 0;
// Triggers a prompt to ask the user to turn on the system NFC setting on
// their device, and invokes callback when prompt is completed.
//
// The prompt will be triggered in the activity of the web contents.
//
// The callback is guaranteed to be called unless the user never replies to
// the prompt dialog, which in practice happens very infrequently since the
// dialog is modal.
//
// The callback may be invoked a long time after this method has returned.
// If you need to access in the callback an object that is not owned by the
// callback, you should ensure that the object has not been destroyed before
// accessing it to prevent crashes, e.g. by using weak pointer semantics.
virtual void PromptToEnableNfcSystemLevelSetting(
content::WebContents* web_contents,
base::OnceClosure prompt_completed_callback) = 0;
};
} // namespace permissions
#endif // COMPONENTS_PERMISSIONS_ANDROID_NFC_NFC_SYSTEM_LEVEL_SETTING_H_
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