PRBool canDrop ( PRInt32 index , PRInt32 orientation )

Methods used by the drag feedback code to determine if a drag is allowable at the current location. To get the behavior where drops are only allowed on items, such as the mailNews folder pane, always return false whe the orientation is not DROP_ON.

Arguments:

index

orientation

void onCycleCell ( PRInt32 row , PRUnichar* colID )

Called when a cell in a non-selectable cycling column (e.g. unread/flag/etc.) is clicked.

Arguments:

row

colID

void onCycleHeader ( PRUnichar* colID , nsIDOMElement elt )

Called when a header is clicked.

Arguments:

colID

elt

void onDrop ( PRInt32 row , PRInt32 orientation )

Called when the user drops something on this view. The orientation param specifies before/on/after the given row.

Arguments:

row

orientation

void onPerformAction ( PRUnichar* action )

A command API that can be used to invoke commands on the selection. The tree will automatically invoke this method when certain keys are pressed. For example, when the DEL key is pressed, performAction will be called with the "delete" string.

Arguments:

action

void onPerformActionOnCell ( PRUnichar* action , PRInt32 row , PRUnichar* colID )

A command API that can be used to invoke commands on a specific cell.

Arguments:

action

row

colID

void onPerformActionOnRow ( PRUnichar* action , PRInt32 row )

A command API that can be used to invoke commands on a specific row.

Arguments:

action

row

void onSelectionChanged ( )

Called when selection in the tree changes

void onToggleOpenState ( PRInt32 index )

Called when an item is opened or closed.

Arguments:

index