WidgetPersistenceService (cockpitng 20.05.0-RC3 API)

All Known Implementing Classes:

XmlModuleAwarePersistenceService, XMLWidgetPersistenceService
```
public interface WidgetPersistenceService
```
Service responsible for storing and loading widget tree from a persistent storage like a DB, file etc.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`deleteWidgetTree(Widget widget)`	Deletes widget's tree.
`Widget`	`loadWidgetTree(java.lang.String widgetId)`	Loads widget's tree.
`void`	`resetToDefaults()`	Resets to defaults
`void`	`storeWidgetTree(Widget widget)`	Stores widget's tree in file

- Method Detail
  - loadWidgetTree
```
Widget loadWidgetTree(java.lang.String widgetId)
```
    Loads widget's tree. Widget can consist any number of children which can form a tree.
    
    Parameters:
    
    widgetId - an id of widget's tree root
    
    Returns:
    
    a widget tree
  - storeWidgetTree
```
void storeWidgetTree(Widget widget)
```
    Stores widget's tree in file
    
    Parameters:
    
    widget - tree to store
  - deleteWidgetTree
```
void deleteWidgetTree(Widget widget)
```
    Deletes widget's tree.
    
    Parameters:
    
    widget - tree to delete
  - resetToDefaults
```
void resetToDefaults()
```
    Resets to defaults