Sets the text edit that this find widget will use to search.
        
        :param      textEdit | <QTextEdit>

def setTextEdit( self, textEdit ):
        """
        Sets the text edit that this find widget will use to search.
        
        :param      textEdit | <QTextEdit>
        """
        if ( self._textEdit ):
            self._textEdit.removeAction(self._findAction)
            
        self._textEdit = textEdit
        if ( textEdit ):
            textEdit.addAction(self._findAction)