| // 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. |
| |
| #ifndef CHROME_BROWSER_USB_USB_TAB_HELPER_H_ |
| #define CHROME_BROWSER_USB_USB_TAB_HELPER_H_ |
| |
| #include <map> |
| #include <memory> |
| |
| #include "base/macros.h" |
| #include "content/public/browser/web_contents_observer.h" |
| #include "content/public/browser/web_contents_user_data.h" |
| #include "mojo/public/cpp/bindings/interface_request.h" |
| |
| namespace blink { |
| namespace mojom { |
| class WebUsbService; |
| } |
| } // namespace blink |
| |
| class WebUsbChooser; |
| |
| struct FrameUsbServices; |
| |
| typedef std::map<content::RenderFrameHost*, std::unique_ptr<FrameUsbServices>> |
| FrameUsbServicesMap; |
| |
| // Per-tab owner of USB services provided to render frames within that tab. |
| class UsbTabHelper : public content::WebContentsObserver, |
| public content::WebContentsUserData<UsbTabHelper> { |
| public: |
| static UsbTabHelper* GetOrCreateForWebContents( |
| content::WebContents* web_contents); |
| |
| ~UsbTabHelper() override; |
| |
| void CreateWebUsbService( |
| content::RenderFrameHost* render_frame_host, |
| mojo::InterfaceRequest<blink::mojom::WebUsbService> request); |
| |
| void IncrementConnectionCount(content::RenderFrameHost* render_frame_host); |
| void DecrementConnectionCount(content::RenderFrameHost* render_frame_host); |
| bool IsDeviceConnected() const; |
| |
| private: |
| explicit UsbTabHelper(content::WebContents* web_contents); |
| friend class content::WebContentsUserData<UsbTabHelper>; |
| |
| // content::WebContentsObserver overrides: |
| void RenderFrameDeleted(content::RenderFrameHost* render_frame_host) override; |
| void DidFinishNavigation(content::NavigationHandle* handle) override; |
| |
| FrameUsbServices* GetFrameUsbService( |
| content::RenderFrameHost* render_frame_host); |
| |
| base::WeakPtr<WebUsbChooser> GetUsbChooser( |
| content::RenderFrameHost* render_frame_host); |
| |
| void NotifyTabStateChanged() const; |
| |
| bool AllowedByFeaturePolicy( |
| content::RenderFrameHost* render_frame_host) const; |
| |
| FrameUsbServicesMap frame_usb_services_; |
| |
| DISALLOW_COPY_AND_ASSIGN(UsbTabHelper); |
| }; |
| |
| #endif // CHROME_BROWSER_USB_USB_TAB_HELPER_H_ |