Interface IUITree

public interface IUITree
{
  // Methods
  public Rectangle getAttachRect();
  public IUIComponent getExpander();
  public boolean hasChildren();
  public boolean isExpanded();
  public void setExpanded(boolean expanded,boolean notify);
  public void setExpanded(boolean expanded);
  public void setExpander(IUIComponent expander);
}

This interface defines methods associated with tree nodes. UITree implements IUITree.

Methods

getAttachRect

public Rectangle getAttachRect();

Determines where the attaching line from the tree node's parent to the tree node will be drawn.

Return Value:

Returns the node's bounding rectangle.

getExpander

public IUIComponent getExpander();

Retrieves the tree node's expand button, which indicates whether the node is expanded or collapsed.

Return Value:

Returns the component currently being used as the expand button.

hasChildren

public boolean hasChildren();

Determines whether the tree node has child items.

Return Value:

Returns true if the node has child items; otherwise, returns false.

isExpanded

public boolean isExpanded();

Determines whether the tree node is expanded.

Return Value:

Returns true if the node is expanded; otherwise, returns false.

setExpanded

public void setExpanded(boolean expanded,boolean notify);

Expands or collapses the tree node to show or hide the node's children.

Return Value:

No return value.

Parameter	Description
expanded	If true, the node will be expanded; otherwise, the node will be collapsed.
notify	If true, the node will generate an action event and posts it to the Tree node's parent.

setExpanded

public void setExpanded(boolean expanded);

Expands or collapses the tree node to show or hide the node's children.

Return Value:

No return value.

Parameter	Description
expanded	If true, the node will be expanded; otherwise, the node will be collapsed.

setExpander

public void setExpander(IUIComponent expander);

Sets the tree node's expand button to the specified component. The expand button indicates whether the node is expanded or collapsed.

Return Value:

No return value.

Parameter	Description
expander	The component to be used for the expand button.