The tree component is internally based on the MVC architecture like
the other JViews TGO
components, which means that it has a model, a view, and a
controller associated with it. For a general introduction to the
MVC architecture, see Architecture of graphic components.
This topic describes the classes that you can use to create and
manage trees. For a more detailed description, refer to the overview-summary. The classes are organized
as follows:
MVC (model, view, controller) architecture
The MVC architecture for the tree component is implemented by the
following classes (see Model,
view, and controller for the tree component):
- IlpTreeView is the view module of the tree in the MVC architecture. It defines a Swing-based tree used to display instances of IlpTreeNode. It uses an IlpTreeModel as entry model.
- IlpTreeModel is the model module of the tree in the MVC architecture. It is the representation model, and contains instances of IlpTreeNode.
- IlpTreeController is the controller module of the tree in the MVC architecture. It allows you to customize the behavior of the IlpTreeView.
Model, view, and controller for the
tree component
For general information about the model, the view, and the
controller, see Architecture of graphic components.
Representation model and representation objects
The representation model for the tree component is implemented by
the following classes (see Representation
model and representation objects for the tree component):
- The IlpTreeModel class is the model module in the MVC architecture of the tree. It is the representation model and contains instances of IlpTreeNode.
- The IlpTreeNode interface defines the representation objects for tree nodes. The IlpDefaultTreeNode class is the default implementation of
IlpTreeNode.
Representation model and
representation objects for the tree component
For general information about the representation model and
representation objects, see Architecture of graphic components.
Graphic view and renderer
The graphic view and the renderer are implemented by the
following classes (see Graphic
view and renderer for the tree component)
- The IlpTreeCellRenderer is used to render tree nodes. It is based on the CSS configuration, which means that it uses the properties defined in the style sheet for the nodes. The default rendering is performed by a
JLabel. If the "class" property is specified in the CSS file, it defines the IlvGraphic orJComponentthat will be used to render the tree node. See Using your own graphic representation for details. - The IlpTreeSelectionModel interface defines the requirements for a selection model containing IlpTreeNode. The IlpDefaultTreeSelectionModel class is the default implementation of
IlpTreeSelectionModel.
Graphic view and renderer for the tree
component
Controller and interactors
The controller is implemented by the IlpTreeController class, which allows you
to register pop-up menus and interactors.
For general information about the controller, see The controller.
No special interactor is provided for the
tree component.