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Diffstat (limited to 'app/table_model_observer.h')
| -rw-r--r-- | app/table_model_observer.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/app/table_model_observer.h b/app/table_model_observer.h new file mode 100644 index 0000000..fcd50f4 --- /dev/null +++ b/app/table_model_observer.h @@ -0,0 +1,25 @@ +// Copyright (c) 2009 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 APP_TABLE_MODEL_OBSERVER_H_ +#define APP_TABLE_MODEL_OBSERVER_H_ + +// Observer for a TableModel. Anytime the model changes, it must notify its +// observer. +class TableModelObserver { + public: + // Invoked when the model has been completely changed. + virtual void OnModelChanged() = 0; + + // Invoked when a range of items has changed. + virtual void OnItemsChanged(int start, int length) = 0; + + // Invoked when new items are added. + virtual void OnItemsAdded(int start, int length) = 0; + + // Invoked when a range of items has been removed. + virtual void OnItemsRemoved(int start, int length) = 0; +}; + +#endif // APP_TABLE_MODEL_OBSERVER_H_ |