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1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. |
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2 // Use of this source code is governed by a BSD-style license that can be |
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3 // found in the LICENSE file. |
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4 |
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5 #ifndef CHROME_COMMON_NOTIFICATION_OBSERVER_H_ |
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6 #define CHROME_COMMON_NOTIFICATION_OBSERVER_H_ |
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7 |
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8 class NotificationDetails; |
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9 class NotificationSource; |
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10 class NotificationType; |
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11 |
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12 // This is the base class for notification observers. When a matching |
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13 // notification is posted to the notification service, Observe is called. |
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14 class NotificationObserver { |
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15 public: |
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16 virtual ~NotificationObserver(); |
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17 |
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18 virtual void Observe(NotificationType type, |
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19 const NotificationSource& source, |
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20 const NotificationDetails& details) = 0; |
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21 }; |
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22 |
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23 #endif // CHROME_COMMON_NOTIFICATION_OBSERVER_H_ |