Cancel the permission request

android_webview/native/permission/permission_request_handler.h

 // 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 ANDROID_WEBVIEW_NATIVE_PERMISSION_PERMISSION_REQUEST_HANDLER_H
 #define ANDROID_WEBVIEW_NATIVE_PERMISSION_PERMISSION_REQUEST_HANDLER_H
 
 #include <map>
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
+#include "content/public/browser/web_contents_observer.h"
 #include "url/gurl.h"
 
 namespace android_webview {
 
 class AwPermissionRequest;
 class AwPermissionRequestDelegate;
 class PermissionRequestHandlerClient;
 
 // This class is used to send the permission requests, or cancel ongoing
 // requests.
 // It is owned by AwContents and has 1x1 mapping to AwContents. All methods
 // are running on UI thread.
-class PermissionRequestHandler {
+class PermissionRequestHandler : public content::WebContentsObserver {
  public:
-  PermissionRequestHandler(PermissionRequestHandlerClient* aw_contents);
+  PermissionRequestHandler(PermissionRequestHandlerClient* client,
+                           content::WebContents* aw_contents);
   virtual ~PermissionRequestHandler();
 
   // Send the given |request| to PermissionRequestHandlerClient.
   void SendRequest(scoped_ptr<AwPermissionRequestDelegate> request);
 
   // Cancel the ongoing request initiated by |origin| for accessing |resources|.
   void CancelRequest(const GURL& origin, int64 resources);
 
   // Allow |origin| to access the |resources|.
   void PreauthorizePermission(const GURL& origin, int64 resources);
 
+  // WebContentsObserver
+  virtual void NavigationEntryCommitted(
+      const content::LoadCommittedDetails& load_details) OVERRIDE;
+
  private:
   friend class TestPermissionRequestHandler;
 
   typedef std::vector<base::WeakPtr<AwPermissionRequest> >::iterator
       RequestIterator;
 
   // Return the request initiated by |origin| for accessing |resources|.
   RequestIterator FindRequest(const GURL& origin, int64 resources);
 
   // Cancel the given request.
   void CancelRequest(RequestIterator i);
 
+  void CancelAllRequests();
+
   // Remove the invalid requests from requests_.
   void PruneRequests();
 
   // Return true if |origin| were preauthorized to access |resources|.
   bool Preauthorized(const GURL& origin, int64 resources);
 
   PermissionRequestHandlerClient* client_;
 
   // A list of ongoing requests.
   std::vector<base::WeakPtr<AwPermissionRequest> > requests_;
 
   std::map<std::string, int64> preauthorized_permission_;
 
+  // The unique id of the active NavigationEntry of the WebContents that we were
+  // opened for. Used to help expire on requests.
+  int contents_unique_id_;
+
   DISALLOW_COPY_AND_ASSIGN(PermissionRequestHandler);
 };
 
 }  // namespace android_webivew
 
 #endif  // ANDROID_WEBVIEW_NATIVE_PERMISSION_PERMISSION_REQUEST_HANDLER_H