Handle media access permission request

android_webview/native/permission/permission_request_handler.cc

+// 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.
+
+#include "android_webview/native/permission/permission_request_handler.h"
+
+#include "base/android/scoped_java_ref.h"
+#include "base/bind.h"
+
+using base::android::ScopedJavaLocalRef;
+
+namespace android_webview {
+
+PermissionRequestHandler::PermissionRequestHandler(
+    PermissionRequestHandlerClient* client)
+    : client_(client) {
+}
+
+PermissionRequestHandler::~PermissionRequestHandler() {
+  for (RequestIterator i = requests_.begin(); i != requests_.end(); ++i)
+    CancelRequest(i);
+}
+
+void PermissionRequestHandler::SendRequest(
+    const scoped_refptr<AwPermissionRequest>& request) {
+  ScopedJavaLocalRef<jobject> java_ref = request->CreateJavaPeer(
+      base::Bind(&PermissionRequestHandler::NotifyRequestProcessed,
+                 base::Unretained(this)));
+  if (!java_ref.is_null()) {
+    requests_.push_back(request);
+    client_->OnPermissionRequest(request);
+  }
+}
+
+void PermissionRequestHandler::CancelRequest(const GURL& origin,
+                                             int64 resources) {
+  // The request list might have multiple requests with same origin and
+  // resources.
+  RequestIterator i = FindRequest(origin, resources);
+  while (i != requests_.end()) {
+    CancelRequest(i);
+    requests_.erase(i);
+    i = FindRequest(origin, resources);
+  }
+}
+
+void PermissionRequestHandler::NotifyRequestProcessed(
+    scoped_refptr<AwPermissionRequest> request) {
+  RequestIterator i =
+      FindRequest(request->GetOrigin(), request->GetResources());
+  if (i != requests_.end())
+    requests_.erase(i);
+}
+
+PermissionRequestHandler::RequestIterator
+PermissionRequestHandler::FindRequest(const GURL& origin,
+                                      int64 resources) {
+  RequestIterator i;
+  for (i = requests_.begin(); i != requests_.end(); ++i) {
+    if (i->get()->GetOrigin() == origin &&
+        i->get()->GetResources() == resources) {
+      break;
+    }
+  }
+  return i;
+}
+
+void PermissionRequestHandler::CancelRequest(RequestIterator i) {
+    client_->OnPermissionRequestCanceled(*i);
+}
+
+}  // namespace android_webivew