Edit

Press “Edit” icon in correspondence of the document to modify:

As shown in the next figure, let’s see how it works the GVServices section of GVCore. The configuration document has a tree structure. Each node may have some attributes and some sub-nodes. User may refer to a node as an "element" because of the XML internal representation. The interface provides the display of an element, its attributes, his children and his ancestors, as shown in figure:

The following image shows the specific editing interface of a component:

The user interface includes seven different areas:

• Menu

Provides commands like save, discard, document search, download, viewing, element viewing. After editing is required to save or discard changes.

• Current element

Displays the name of the item you are making to edit.

• Attributes

Shows attributes of the current element and the possible operations to add, remove and set an attribute.

• Ancestors

Shows items that precede the current one. These links allow user to navigate the document and then return to the current item. Do not press on browser’s back button to return to the previous node.

• Subelements

Show subelements ( "children") of the current element and the possible operations to add, remove and edit the children.

Some changes may not be saved because of an XML format inconsistency. A warning event will be displayed in a special area as shown in the next figure. User may click on the icon in order to analyze and resolve the inconsistency.

The Undo/Redo icon allows to cancel or re-execute a change.

Configuration may be edited through a proper XML representation tree.

The icons shown in next figure allow user to enable/disable the tree view:

In order to display the configuration editor tree, click on the following icon:

The tree view mode will be activated:

Tree view may be disable anytime, just clicking on the icon crossed by a red X.

The tree schema of configuration files in XML is shown on the left, with its elements and subelements.