Hierarchical elements are shown in a tree view. In systems engineering, trees are commonly used to display a hierarchical structure. The treeview supports this need, including editing capabilities.

Edit hierarchical elements in a tree view

1. In the overview, click on Treeview.
2. In the treeview, in the toolbox, click on Create root. Type in a value for the created element. As a result, a new element on the root level of the tree is created.
3. In the treeview, in the toolbox, use Create child to create an underlying element, use Edit to rename an element or use Delete to remove an element.

Note:

• For each element in the treeview, the value of one of its properties is shown. Typically, this is a descriptive property (e.g. a property ‘Name’). The property used to display the value in the treeview is set as the Display as property for the element.

Restructure the hierarchy of elements in a tree view

1. In the overview, click on Treeview.
2. In the treeview, select an element and drag and drop it on another element in the tree. As a result, the hierarchical position of the element in the tree is updated.
3. In the treeview, select an underlying element and drag and drop it above or below another element on the same level in the tree. As a result, the position relative to other elements on the same level is updated.

Enable feature^*

1. In the workspace menu, click on  Type graphview.
2. In the model, click on the type element.
3. In the toolbox, click on Edit. As a result, the dialog Type element settings is opened.
4. In the dialog Type element settings, on the tab Advanced, ensure that Configuration is set to Derived element and that the Origin relation is set to a single relation that is part of the hierarchical structure.
5. In the dialog Type element settings, on the tab Advanced, tick the checkbox for Hierarchical behaviour.

Note:

• If the origin relation refers to the same type element, the option Hierarchical behavior is automatically enabled and cannot be disabled. This model pattern is always considered to be a hierarchical structure, and therefore always, a tree view is available.

* In the workspace, the user type of your user must be set to power user to enable this feature.