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 An interface implemented by a tooltip text provider service. This
 service is called to discover what tooltip text is associated
 with the node that the pointer is positioned over.

 Embedders may implement and register their own tooltip text provider
 service if they wish to provide different tooltip text. 

 The default service returns the text stored in the TITLE
 attribute of the node or a containing parent.

 @note
 The tooltip text provider service is registered with the contract
 defined in NS_TOOLTIPTEXTPROVIDER_CONTRACTID.

 @see nsITooltipListener
 @see nsIComponentManager
 @see nsIDOMNode

 @status FROZEN
[scriptable, uuid(b128a1e6-44f3-4331-8fbe-5af360ff21ee)]
interface nsITooltipTextProvider : nsISupports

Methods

 Called to obtain the tooltip text for a node.

 @arg aNode The node to obtain the text from.
 @arg aText The tooltip text.

 @return <CODE>PR_TRUE</CODE> if tooltip text is associated
         with the node and was returned in the aText argument;
         <CODE>PR_FALSE</CODE> otherwise.
boolean getNodeText(in nsIDOMNode aNode, out wstring aText)