Index: content/browser/host_zoom_level_context.h |
diff --git a/content/browser/host_zoom_level_context.h b/content/browser/host_zoom_level_context.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..b8b870a1d3df42f140143c008c5acf8b5f50ccce |
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+++ b/content/browser/host_zoom_level_context.h |
@@ -0,0 +1,65 @@ |
+// Copyright (c) 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 CONTENT_BROWSER_HOST_ZOOM_LEVEL_CONTEXT_H_ |
+#define CONTENT_BROWSER_HOST_ZOOM_LEVEL_CONTEXT_H_ |
+ |
+#include "base/macros.h" |
+#include "base/memory/ref_counted.h" |
+#include "base/memory/scoped_ptr.h" |
+#include "content/browser/host_zoom_map_impl.h" |
+#include "content/public/browser/zoom_level_delegate.h" |
+ |
+class PrefService; |
+ |
+namespace base { |
+class FilePath; |
+} |
+ |
+namespace content { |
+struct HostZoomLevelContextDeleter; |
+ |
+// This class manages a HostZoomMap and, associates it with a PrefsStore, |
+// if one is provided. It also serves to keep the zoom level machinery details |
+// deparate from the owning StoragePartitionImpl. |
+class HostZoomLevelContext |
+ : public base::RefCountedThreadSafe<HostZoomLevelContext, |
+ HostZoomLevelContextDeleter> { |
Fady Samuel
2014/11/03 22:11:11
Is the HostZoomLevelContextDeleter necessary?
wjmaclean
2014/11/04 19:34:25
After a quick experiment, apparently no! Good to k
|
+ public: |
+ HostZoomLevelContext(scoped_ptr<ZoomLevelDelegate> zoom_level_delegate, |
+ const base::FilePath& file_path); |
+ |
+ HostZoomMap* GetHostZoomMap() const { return host_zoom_map_impl_.get(); } |
+ ZoomLevelDelegate* GetZoomLevelDelegate() const { |
+ return zoom_level_delegate_.get(); |
+ } |
+ |
+ protected: |
+ virtual ~HostZoomLevelContext(); |
+ |
+ private: |
+ friend class base::DeleteHelper<HostZoomLevelContext>; |
+ friend class base::RefCountedThreadSafe<HostZoomLevelContext, |
+ HostZoomLevelContextDeleter>; |
+ friend struct HostZoomLevelContextDeleter; |
+ |
+ void DeleteOnCorrectThread() const; |
+ |
+ scoped_ptr<HostZoomMapImpl> host_zoom_map_impl_; |
+ // The prefs_store pointer needs to be released before the destructor for the |
wjmaclean
2014/11/03 22:11:06
This comment is stale, I'll remove it in the next
Fady Samuel
2014/11/03 22:11:11
nit: don't mention prefs in content.
|
+ // HostZoomMapImpl is called, and so must be declared in this order. |
+ scoped_ptr<ZoomLevelDelegate> zoom_level_delegate_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(HostZoomLevelContext); |
+}; |
+ |
+struct HostZoomLevelContextDeleter { |
+ static void Destruct(const HostZoomLevelContext* context) { |
+ context->DeleteOnCorrectThread(); |
+ } |
+}; |
+ |
+} // namespace content |
+ |
+#endif // CONTENT_BROWSER_HOST_ZOOM_LEVEL_CONTEXT_H_ |