Drag & Drop Hierarchy Tree component is based on Parent-Child hierarchy. It is used for dragging and dropping child items or parent's items from one position to another position. In this component we created a block (Hierarchy List) in blank module and used its dependency in Hierarchy Tree Module. 

The actions which are used in this component are mentioned below 

Block Actions (Hierarchy List) 

HierarchyTreeCreateOrUpdate 

Create or update hierarchical tree items. 

Filter_List 

Getting the filtered hierarchy list data. 

Add_Hierarchy_OnClick 

Create new hierarchical items (new child item). 

Edit_Hierarchy_OnClick 

Update old hierarchical item (old child item). 

OnInitialize 

Check the present parent items and their children's items. 

OnRender 

Render the java script which is used for drag and drop functionality. 

ToggleShow 

Used for Showing and hiding the children's items of the hierarchy tree.  

UpdateHierarchyParent 

Update parent hierarchy of dragged item. 

Screen Actions 

SaveHierarchyDetails 

Perform the create hierarchy item details. 

Update_Detail 

Update Parent hierarchy 

OnInitialize 

Get the filter list values.