How to configure the NavBreadcrumbControl

Aside from the standard Content and Pane properties of all objects and graphics, the NavBreadcrumbControl includes several sets of properties:

• Navigation: This set of properties determine if the navigation root and path are shown and the starting point of the breadcrumb path within the navigation model.

• Alarms: The value of the Show Alarms property determines if the NavBreadcrumbControl includes an Alarm Adorner or not.

• Appearance: This set of properties specify the font size of text and the foreground and background colors shown on the BreadcrumbControl.

  Each property contains a drop-down list of binding options. Some properties only provide a Reset option to reset a property value to its default. Other properties allow you to configure dynamic binding values in addition to a static binding.

  

  The type of control property /attribute binding can be specified by selecting a value from the drop-down list.

  Constant	Static binding to the specified path. Enter a value in the data entry field.
  In	Dynamic root path with read only binding by the control to a reference.
  Out	Dynamic root path with write only binding by the control to a reference.
  InOut	Dynamic root path with read/write binding by the control to a reference.
  Reset	Reset the current property to its default value.

To configure the NavBreadcrumbControl

1. Open the Layout or ViewApp Editor and select the Toolbox tab.

2. Open the AVEVA OMI Apps folder to show the default apps.

3. Select NavigationApp from the Toolbox list.

   The NavBreadcrumbControl and NavigationTree thumbnails appear beneath the Toolbox list.

4. Drag and drop the NavBreadcrumbControl thumbnail on a layout pane.

5. Select the pane containing the NavBreadcrumbControl and select the Properties grid.

   The Properties grid shows a list of NavBreadcrumbControl properties.

   

6. Select Root Path to load the NavBreadcrumbControl to a specified path. Enabling Root Path sets the initial context view of the ViewApp to the specified path.

7. The default is static binding that begins the navigation path at the root of the navigation model.

8. Select Show Root if you want the root of the navigation model to appear in the NavBreadcrumbControl.

   By default, the root is not shown.

9. Select Show Alarms if you want to show aggregate alarm counts for each navigation node shown by the the NavBreadcrumbControl.

10. Assign values to the Appearance properties for color and fonts.

11. If you want to create event handler scripts, select the Available Events data entry field to show a list of NavBreadcrumbControl events. For more information about creating event handler scripts, see Add an Event Handler Script.

12. Save your changes.