| org.eclipse.jface.viewers.ITreeContentProvider
All known Subclasses: org.eclipse.jface.internal.databinding.provisional.viewers.UnorderedTreeContentProvider, org.eclipse.jface.viewers.TreeNodeContentProvider, org.eclipse.jface.preference.PreferenceContentProvider,
| Method Summary | |
| public Object[] | getChildren(Object parentElement)
Returns the child elements of the given parent element. | | public Object | getParent(Object element)
Returns the parent for the given element, or null
indicating that the parent can't be computed. | | public boolean | hasChildren(Object element)
Returns whether the given element has children.
Intended as an optimization for when the viewer does not
need the actual children. |
| getChildren | | public Object[] getChildren(Object parentElement)(Code) | | Returns the child elements of the given parent element.
The difference between this method and IStructuredContentProvider.getElements
is that getElements is called to obtain the
tree viewer's root elements, whereas getChildren is used
to obtain the children of a given parent element in the tree (including a root).
The result is not modified by the viewer.
Parameters:
parentElement - the parent element an array of child elements |
| getParent | | public Object getParent(Object element)(Code) | | Returns the parent for the given element, or null
indicating that the parent can't be computed.
In this case the tree-structured viewer can't expand
a given node correctly if requested.
Parameters:
element - the element the parent element, or null if ithas none or if the parent cannot be computed |
| hasChildren | | public boolean hasChildren(Object element)(Code) | | Returns whether the given element has children.
Intended as an optimization for when the viewer does not
need the actual children. Clients may be able to implement
this more efficiently than getChildren.
Parameters:
element - the element true if the given element has children,and false if it has no children |
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