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// Copyright 2015 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.
#include "chrome/browser/usb/usb_tab_helper.h"
#include <utility>
#include "base/memory/scoped_ptr.h"
#include "chrome/browser/usb/web_usb_permission_bubble.h"
#include "chrome/browser/usb/web_usb_permission_provider.h"
#include "device/usb/mojo/device_manager_impl.h"
using content::RenderFrameHost;
using content::WebContents;
DEFINE_WEB_CONTENTS_USER_DATA_KEY(UsbTabHelper);
struct FrameUsbServices {
scoped_ptr<WebUSBPermissionProvider> permission_provider;
scoped_ptr<ChromeWebUsbPermissionBubble> permission_bubble;
};
// static
UsbTabHelper* UsbTabHelper::GetOrCreateForWebContents(
WebContents* web_contents) {
UsbTabHelper* tab_helper = FromWebContents(web_contents);
if (!tab_helper) {
CreateForWebContents(web_contents);
tab_helper = FromWebContents(web_contents);
}
return tab_helper;
}
UsbTabHelper::~UsbTabHelper() {}
void UsbTabHelper::CreateDeviceManager(
RenderFrameHost* render_frame_host,
mojo::InterfaceRequest<device::usb::DeviceManager> request) {
DCHECK(WebContents::FromRenderFrameHost(render_frame_host) == web_contents());
device::usb::DeviceManagerImpl::Create(
GetPermissionProvider(render_frame_host), std::move(request));
}
#if !defined(OS_ANDROID)
void UsbTabHelper::CreatePermissionBubble(
content::RenderFrameHost* render_frame_host,
mojo::InterfaceRequest<webusb::WebUsbPermissionBubble> request) {
GetPermissionBubble(render_frame_host, std::move(request));
}
#endif // !defined(OS_ANDROID)
UsbTabHelper::UsbTabHelper(WebContents* web_contents)
: content::WebContentsObserver(web_contents) {}
void UsbTabHelper::RenderFrameDeleted(RenderFrameHost* render_frame_host) {
frame_usb_services_.erase(render_frame_host);
}
FrameUsbServices* UsbTabHelper::GetFrameUsbService(
content::RenderFrameHost* render_frame_host) {
FrameUsbServicesMap::const_iterator it =
frame_usb_services_.find(render_frame_host);
if (it == frame_usb_services_.end()) {
scoped_ptr<FrameUsbServices> frame_usb_services(new FrameUsbServices());
it = (frame_usb_services_.insert(
std::make_pair(render_frame_host, std::move(frame_usb_services))))
.first;
}
return it->second.get();
}
base::WeakPtr<device::usb::PermissionProvider>
UsbTabHelper::GetPermissionProvider(RenderFrameHost* render_frame_host) {
FrameUsbServices* frame_usb_services = GetFrameUsbService(render_frame_host);
if (!frame_usb_services->permission_provider) {
frame_usb_services->permission_provider.reset(
new WebUSBPermissionProvider(render_frame_host));
}
return frame_usb_services->permission_provider->GetWeakPtr();
}
#if !defined(OS_ANDROID)
void UsbTabHelper::GetPermissionBubble(
content::RenderFrameHost* render_frame_host,
mojo::InterfaceRequest<webusb::WebUsbPermissionBubble> request) {
FrameUsbServices* frame_usb_services = GetFrameUsbService(render_frame_host);
if (!frame_usb_services->permission_bubble) {
frame_usb_services->permission_bubble.reset(
new ChromeWebUsbPermissionBubble(render_frame_host));
}
frame_usb_services->permission_bubble->Bind(std::move(request));
}
#endif // !defined(OS_ANDROID)
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