Fault Tree Treeview
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The Treeview page allows to display all the fault trees of a given system in a tree format. 
The user may collapse and expand each gate and perform several actions.

To go to the treeview page, click on the ``Treeview`` tab on the navigation bar.

.. image:: img/treeview/tree_page.PNG
    :width: 696.47pt

By clicking on the ``Existing Projects`` dropdown, all the systems available will be shown. Click on one system to load its fault trees.

.. image:: img/treeview/select_sys.PNG
    :width: 696.47pt

.. image:: img/treeview/tree.PNG
    :width: 696.47pt

To collapse/expand the gates, click on the orange arrows.
Click on the three dots to display all the available actions, as shown in the picture below.

.. image:: img/treeview/options.PNG
    :width: 696.47pt

The different actions are:

- **See node in FT:** Go to the tree diagram and show the selected node.

- **Calculate Prob.:**  Calculate the probability.

- **Calculate Cutsets:** Calculate the Minimal Cutsets.

- **Delete:** Delete the node and its children.