This class manipulates editor tools in the Scene view.
| activeContextType | Gets the type of EditorToolContext that is currently active. The default value is GameObjectToolContext. | 
| activeToolType | Gets the type of the EditorTool that is currently active. | 
| IsActiveContext | Test if an EditorToolContext is currently the active tool context. | 
| IsActiveTool | 测试 EditorTool 当前是否是激活的工具。 | 
| RefreshAvailableTools | Call RefreshAvailableTools to rebuild the contents of the Scene View Tools Overlay. | 
| RestorePreviousPersistentTool | 将上次使用的全局 EditorTool 设置为激活的工具。 | 
| RestorePreviousTool | 将上次使用的 EditorTool 设置为激活的工具。 | 
| SetActiveContext | Sets the active EditorToolContext. | 
| SetActiveTool | 设置激活的 EditorTool。 | 
| activeContextChanged | Defines an event handler for when the active EditorToolContext changes. | 
| activeContextChanging | Defines an event handler for when the active EditorToolContext will change. | 
| activeToolChanged | Defines an event handler for when the active tool changes. | 
| activeToolChanging | Defines an event handler for when the active tool changes. |