Emits the itemMenuRequested and treeMenuRequested signals
        for the given item.
        
        :param      point | <QPoint>

def requestTreeMenu(self, point):
        """
        Emits the itemMenuRequested and treeMenuRequested signals
        for the given item.
        
        :param      point | <QPoint>
        """
        item = self.uiGanttTREE.itemAt(point)
        if item:
            glbl_pos = self.uiGanttTREE.viewport().mapToGlobal(point)
            self.treeMenuRequested.emit(item, glbl_pos)
            self.itemMenuRequested.emit(item, glbl_pos)