Filtered events.

chrome/common/extensions/value_set.h

Index: chrome/common/extensions/value_set.h
diff --git a/chrome/common/extensions/value_set.h b/chrome/common/extensions/value_set.h
new file mode 100644
index 0000000000000000000000000000000000000000..90f1bc748cb29d62c3199d6ab30a5ef8c068b1f8
--- /dev/null
+++ b/chrome/common/extensions/value_set.h
@@ -0,0 +1,51 @@
+// Copyright (c) 2012 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_COMMON_EXTENSIONS_VALUE_SET_H_
+#define CHROME_COMMON_EXTENSIONS_VALUE_SET_H_
+#pragma once
+
+#include "base/memory/linked_ptr.h"
+
+#include <vector>
+
+namespace base {
+class Value;
+}
+
+class ValueSet {

[Matt Perry, 2012/06/13 01:24:27]

class comment

[Matt Perry, 2012/06/13 01:24:27]

extensions namespace

[koz (OOO until 15th September), 2012/06/14 02:15:55]

Done.

[koz (OOO until 15th September), 2012/06/14 02:15:55]

Done.

+ public:
+  ValueSet();
+  ~ValueSet();
+
+  // Adds |value| to the set and returns how many equal values are in the
+  // set after.
+  int Add(const base::Value* value);

[battre, 2012/06/13 09:21:54]

how is the ownership of |value| handled?

[koz (OOO until 15th September), 2012/06/14 02:15:55]

Done.

+
+  // Removes |value| from the set and returns how many equal values are in
+  // the set after.
+  int Remove(const base::Value* value);
+
+  // Same as Add() but only performs the add if the value isn't present.
+  int AddIfMissing(const base::Value* value);
+
+ private:
+  struct Entry {
+    explicit Entry(const base::Value* value);
+    ~Entry();
+
+    int Increment();
+    int Decrement();
+
+    linked_ptr<base::Value> value;
+    int count;
+  };
+  typedef std::vector<linked_ptr<Entry> > EntryList;
+
+  int AddImpl(const base::Value* value, bool increment);
+
+  EntryList entries_;

[battre, 2012/06/13 09:21:54]

DISALLOW_COPY_AND_ASSIGN

[koz (OOO until 15th September), 2012/06/14 02:15:55]

Done.

+};
+
+#endif  // CHROME_COMMON_EXTENSIONS_VALUE_SET_H_