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-rw-r--r--views/controls/tree/tree_model.h91
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diff --git a/views/controls/tree/tree_model.h b/views/controls/tree/tree_model.h
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--- a/views/controls/tree/tree_model.h
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-// Copyright (c) 2008 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 VIEWS_CONTROLS_TREE_TREE_MODEL_H_
-#define VIEWS_CONTROLS_TREE_TREE_MODEL_H_
-
-#include <string>
-
-#include "base/logging.h"
-
-class SkBitmap;
-
-namespace views {
-
-class TreeModel;
-
-// TreeModelNode --------------------------------------------------------------
-
-// Type of class returned from the model.
-class TreeModelNode {
- public:
- // Returns the title for the node.
- virtual std::wstring GetTitle() = 0;
-};
-
-// Observer for the TreeModel. Notified of significant events to the model.
-class TreeModelObserver {
- public:
- // Notification that nodes were added to the specified parent.
- virtual void TreeNodesAdded(TreeModel* model,
- TreeModelNode* parent,
- int start,
- int count) = 0;
-
- // Notification that nodes were removed from the specified parent.
- virtual void TreeNodesRemoved(TreeModel* model,
- TreeModelNode* parent,
- int start,
- int count) = 0;
-
- // Notification the children of |parent| have been reordered. Note, only
- // the direct children of |parent| have been reordered, not descendants.
- virtual void TreeNodeChildrenReordered(TreeModel* model,
- TreeModelNode* parent) = 0;
-
- // Notification that the contents of a node has changed.
- virtual void TreeNodeChanged(TreeModel* model, TreeModelNode* node) = 0;
-};
-
-// TreeModel ------------------------------------------------------------------
-
-// The model for TreeView.
-class TreeModel {
- public:
- // Returns the root of the tree. This may or may not be shown in the tree,
- // see SetRootShown for details.
- virtual TreeModelNode* GetRoot() = 0;
-
- // Returns the number of children in the specified node.
- virtual int GetChildCount(TreeModelNode* parent) = 0;
-
- // Returns the child node at the specified index.
- virtual TreeModelNode* GetChild(TreeModelNode* parent, int index) = 0;
-
- // Returns the parent of a node, or NULL if node is the root.
- virtual TreeModelNode* GetParent(TreeModelNode* node) = 0;
-
- // Sets the observer of the model.
- virtual void SetObserver(TreeModelObserver* observer) = 0;
-
- // Sets the title of the specified node.
- // This is only invoked if the node is editable and the user edits a node.
- virtual void SetTitle(TreeModelNode* node,
- const std::wstring& title) {
- NOTREACHED();
- }
-
- // Returns the set of icons for the nodes in the tree. You only need override
- // this if you don't want to use the default folder icons.
- virtual void GetIcons(std::vector<SkBitmap>* icons) {}
-
- // Returns the index of the icon to use for |node|. Return -1 to use the
- // default icon. The index is relative to the list of icons returned from
- // GetIcons.
- virtual int GetIconIndex(TreeModelNode* node) { return -1; }
-};
-
-} // namespace views
-
-#endif // VIEWS_CONTROLS_TREE_TREE_MODEL_H_