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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef EXTENSIONS_BROWSER_DEVICE_PERMISSIONS_PROMPT_H_
#define EXTENSIONS_BROWSER_DEVICE_PERMISSIONS_PROMPT_H_
#include <stddef.h>
#include <vector>
#include "base/callback_forward.h"
#include "base/logging.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/strings/string16.h"
namespace content {
class BrowserContext;
class WebContents;
}
namespace device {
class HidDeviceFilter;
class HidDeviceInfo;
class UsbDevice;
class UsbDeviceFilter;
}
namespace extensions {
class Extension;
// Platform-independent interface for displaing a UI for choosing devices
// (similar to choosing files).
class DevicePermissionsPrompt {
public:
using UsbDevicesCallback = base::Callback<void(
const std::vector<scoped_refptr<device::UsbDevice>>&)>;
using HidDevicesCallback = base::Callback<void(
const std::vector<scoped_refptr<device::HidDeviceInfo>>&)>;
// Context information available to the UI implementation.
class Prompt : public base::RefCounted<Prompt> {
public:
// This class stores the device information displayed in the UI. It should
// be extended to support particular device types.
class DeviceInfo {
public:
DeviceInfo();
virtual ~DeviceInfo();
const base::string16& name() const { return name_; }
const base::string16& serial_number() const { return serial_number_; }
bool granted() const { return granted_; }
void set_granted() { granted_ = true; }
protected:
base::string16 name_;
base::string16 serial_number_;
private:
bool granted_ = false;
};
// Since the set of devices can change while the UI is visible an
// implementation should register an observer.
class Observer {
public:
virtual void OnDevicesChanged() = 0;
protected:
virtual ~Observer();
};
Prompt(const Extension* extension,
content::BrowserContext* context,
bool multiple);
// Only one observer may be registered at a time.
virtual void SetObserver(Observer* observer);
virtual base::string16 GetHeading() const = 0;
base::string16 GetPromptMessage() const;
size_t GetDeviceCount() const { return devices_.size(); }
base::string16 GetDeviceName(size_t index) const;
base::string16 GetDeviceSerialNumber(size_t index) const;
// Notifies the DevicePermissionsManager for the current extension that
// access to the device at the given index is now granted.
void GrantDevicePermission(size_t index);
virtual void Dismissed() = 0;
// Allow the user to select multiple devices.
bool multiple() const { return multiple_; }
protected:
virtual ~Prompt();
void AddCheckedDevice(scoped_ptr<DeviceInfo> device, bool allowed);
const Extension* extension() const { return extension_; }
Observer* observer() const { return observer_; }
content::BrowserContext* browser_context() const {
return browser_context_;
}
// Subclasses may fill this with a particular subclass of DeviceInfo and may
// assume that only that instances of that type are stored here.
std::vector<scoped_ptr<DeviceInfo>> devices_;
private:
friend class base::RefCounted<Prompt>;
const extensions::Extension* extension_ = nullptr;
Observer* observer_ = nullptr;
content::BrowserContext* browser_context_ = nullptr;
bool multiple_ = false;
DISALLOW_COPY_AND_ASSIGN(Prompt);
};
DevicePermissionsPrompt(content::WebContents* web_contents);
virtual ~DevicePermissionsPrompt();
void AskForUsbDevices(const Extension* extension,
content::BrowserContext* context,
bool multiple,
const std::vector<device::UsbDeviceFilter>& filters,
const UsbDevicesCallback& callback);
void AskForHidDevices(const Extension* extension,
content::BrowserContext* context,
bool multiple,
const std::vector<device::HidDeviceFilter>& filters,
const HidDevicesCallback& callback);
static scoped_refptr<Prompt> CreateHidPromptForTest(
const Extension* extension,
bool multiple);
static scoped_refptr<Prompt> CreateUsbPromptForTest(
const Extension* extension,
bool multiple);
protected:
virtual void ShowDialog() = 0;
content::WebContents* web_contents() { return web_contents_; }
scoped_refptr<Prompt> prompt() { return prompt_; }
private:
// Parent web contents of the device permissions UI dialog.
content::WebContents* web_contents_;
// Parameters available to the UI implementation.
scoped_refptr<Prompt> prompt_;
DISALLOW_COPY_AND_ASSIGN(DevicePermissionsPrompt);
};
} // namespace extensions
#endif // EXTENSIONS_BROWSER_API_DEVICE_PERMISSIONS_PROMPT_H_
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