com.tssap.util.ui.reuse.tree
Interface ITreeSelectorCallback

All Superinterfaces:

IAddRemoveCallback

public interface ITreeSelectorCallback

extends IAddRemoveCallback

Method Summary

java.lang.String	okToChangeSelection(IReuseable currentUIComponent) Called when the UI user of the @see TreeSelector changes the selection in the tree.
void	selectionAboutToChange(java.lang.Object currentSelection, IReuseable currentUIComponent) Informs the reciver that the selection changed in the @see com.tssap.util.ui.reuse.tree.TreeSelector right side tree.
void	selectionChanged(java.lang.Object currentSelection, IReuseable currentUIComponent) Informs the reciver that the prcess of performing a selection change in the @see TreeSelector is completed

Methods inherited from interface com.tssap.util.ui.reuse.tree.IAddRemoveCallback

addElement, canAddElement, canRemoveElement, removeElement

Method Detail

selectionAboutToChange

public void selectionAboutToChange(java.lang.Object currentSelection,
                                   IReuseable currentUIComponent)

Informs the reciver that the selection changed in the @see com.tssap.util.ui.reuse.tree.TreeSelector right side tree. The right side component wasn't updated yet

Parameters:

currentSelection - the selection before the change

currentUIComponent - the currently shown right side component

See Also:

selectionChanged(Object, IReuseable)

selectionChanged

public void selectionChanged(java.lang.Object currentSelection,
                             IReuseable currentUIComponent)

Informs the reciver that the prcess of performing a selection change in the @see TreeSelector is completed

Parameters:

currentSelection - the new selection

currentUIComponent - the new right side component

okToChangeSelection

public java.lang.String okToChangeSelection(IReuseable currentUIComponent)

Called when the UI user of the @see TreeSelector changes the selection in the tree. This method can veto (probably by testing the state of the right side component) this change is allowed. When a message != null is returned the @see TreeSelector will try to reset the selection and display the given message in it's status line.

Parameters:

currentUIComponent - the current right side component

Returns:

message explaining why the selection can not be changed or null when there is no veto against the selection change