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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_VIEWS_EXAMPLES_TREE_VIEW_EXAMPLE_H_
#define UI_VIEWS_EXAMPLES_TREE_VIEW_EXAMPLE_H_
#include <memory>
#include "base/memory/raw_ptr.h"
#include "ui/base/models/tree_node_model.h"
#include "ui/base/mojom/menu_source_type.mojom-forward.h"
#include "ui/menus/simple_menu_model.h"
#include "ui/views/context_menu_controller.h"
#include "ui/views/controls/tree/tree_view.h"
#include "ui/views/controls/tree/tree_view_controller.h"
#include "ui/views/examples/example_base.h"
namespace ui {
class SimpleMenuModel;
}
namespace views {
class LabelButton;
class MenuRunner;
namespace examples {
class VIEWS_EXAMPLES_EXPORT TreeViewExample
: public ExampleBase,
public TreeViewController,
public ContextMenuController,
public ui::SimpleMenuModel::Delegate {
public:
TreeViewExample();
TreeViewExample(const TreeViewExample&) = delete;
TreeViewExample& operator=(const TreeViewExample&) = delete;
~TreeViewExample() override;
// ExampleBase:
void CreateExampleView(View* container) override;
private:
// IDs used by the context menu.
enum MenuIDs { ID_EDIT, ID_REMOVE, ID_ADD };
void AddNewNode();
void RemoveSelectedNode();
void SetSelectedNodeTitle();
// Non-const version of IsCommandIdEnabled.
bool IsCommandIdEnabled(int command_id);
// TreeViewController:
void OnTreeViewSelectionChanged(TreeView* tree_view) override;
bool CanEdit(TreeView* tree_view, ui::TreeModelNode* node) override;
// ContextMenuController:
void ShowContextMenuForViewImpl(
View* source,
const gfx::Point& point,
ui::mojom::MenuSourceType source_type) override;
// SimpleMenuModel::Delegate:
bool IsCommandIdChecked(int command_id) const override;
bool IsCommandIdEnabled(int command_id) const override;
void ExecuteCommand(int command_id, int event_flags) override;
// The tree view to be tested.
raw_ptr<TreeView> tree_view_ = nullptr;
// Control buttons to modify the model.
raw_ptr<LabelButton> add_ = nullptr;
raw_ptr<LabelButton> remove_ = nullptr;
raw_ptr<LabelButton> change_title_ = nullptr;
using NodeType = ui::TreeNodeWithValue<int>;
ui::TreeNodeModel<NodeType> model_;
std::unique_ptr<ui::SimpleMenuModel> context_menu_model_;
std::unique_ptr<MenuRunner> context_menu_runner_;
};
} // namespace examples
} // namespace views
#endif // UI_VIEWS_EXAMPLES_TREE_VIEW_EXAMPLE_H_
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