Index: chromecast/browser/cast_media_blocker.cc |
diff --git a/chromecast/browser/cast_media_blocker.cc b/chromecast/browser/cast_media_blocker.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..e0cf795514fe9e957147df4a2cf633eb43785d55 |
--- /dev/null |
+++ b/chromecast/browser/cast_media_blocker.cc |
@@ -0,0 +1,58 @@ |
+// Copyright 2016 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 "chromecast/browser/cast_media_blocker.h" |
+ |
+#include "base/threading/thread_checker.h" |
+#include "content/public/browser/web_contents.h" |
+ |
+namespace chromecast { |
+namespace shell { |
+ |
+CastMediaBlocker::CastMediaBlocker(content::WebContents* web_contents) |
+ : content::WebContentsObserver(web_contents), |
+ controllable_(false), |
+ suspended_(false), |
+ state_(UNBLOCKED) {} |
+ |
+CastMediaBlocker::~CastMediaBlocker() {} |
+ |
+void CastMediaBlocker::BlockMediaLoading(bool blocked) { |
+ if (blocked) { |
+ state_ = BLOCKED; |
+ } else if (state_ == BLOCKED) { |
+ state_ = UNBLOCKING; |
+ } |
+ |
+ UpdateMediaBlockedState(); |
+} |
+ |
+void CastMediaBlocker::UpdateMediaBlockedState() { |
+ if (!web_contents()) { |
+ return; |
+ } |
+ |
+ if (!controllable_) { |
+ return; |
+ } |
+ |
+ if (state_ == BLOCKED && !suspended_) { |
+ web_contents()->SuspendMediaSession(); |
+ } else if (state_ == UNBLOCKING && suspended_) { |
+ web_contents()->ResumeMediaSession(); |
+ state_ = UNBLOCKED; |
+ } |
+} |
+ |
+void CastMediaBlocker::MediaSessionStateChanged( |
+ bool is_controllable, |
+ bool is_suspended, |
+ const base::Optional<content::MediaMetadata>& metadata) { |
+ controllable_ = is_controllable; |
+ suspended_ = is_suspended; |
+ UpdateMediaBlockedState(); |
+} |
+ |
+} // namespace shell |
+} // namespace chromecast |