Move models from app to ui/base/models

BUG=none
TEST=none
TBR=brettw


git-svn-id: svn://svn.chromium.org/chrome/trunk/src@71446 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 33 insertions, 0 deletions

diff --git a/ui/base/models/table_model_observer.h b/ui/base/models/table_model_observer.h
new file mode 100644
index 0000000..c70e89b
--- /dev/null
+++ b/ui/base/models/table_model_observer.h
@@ -0,0 +1,33 @@
+// Copyright (c) 2011 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 UI_BASE_MODELS_TABLE_MODEL_OBSERVER_H_
+#define UI_BASE_MODELS_TABLE_MODEL_OBSERVER_H_
+#pragma once
+
+namespace ui {
+
+// 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;
+
+ protected:
+  virtual ~TableModelObserver() {}
+};
+
+}  // namespace ui
+
+#endif  // UI_BASE_MODELS_TABLE_MODEL_OBSERVER_H_