Creating the Domain Nodes Panel

This section explains how to create the Domain Nodes panel of the Network application.
As you can see from the illustration below, this panel contains:

• A table that represents the nodes of a given network domain with their input and output capacities, a hyper-reference to the Lines of Node panel, and two variables x and y that display the node coordinates. If you have a color monitor, you can see that nodes appear in different colors. The color of each node depends on the difference between its input capacity and its output capacity:

  • If its input capacity is greater than its output capacity, the node appears red and is in an alarm state.

  • If its output capacity exceeds its input capacity, the node appears blue.

  • When the load is balanced, the node takes a green color.

• An entry field gadget that shows the name of the current domain.

• A hyper-reference gadget (HRef) that lets you activate the Network panel when you click on it.

• An Alarm Filter toggle button to filter the nodes that are displayed in the table.

Final Domain Nodes Panel

When finished, this panel will look like this in the Main window:

Domain Nodes Panel in the Main Window

Following is the list of operations you are going to perform to create the Domain Nodes panel:

• Create the DomainNodes view,

• Define the Main and Properties data sources related to the DomainNodes view,

• Fill in the data source table with values,

• Add a parameter to the DomainNodes view,

• Create a hyper-reference to the Network panel,

• Associate a gadget with the Properties data source,

• Change a cell color according to a conditional expression,

• Set the conditions for filtering a node.