Adjusts the height for this item based on the columna and its text.
        
        :param      column | <int>

def adjustHeight(self, column):
        """
        Adjusts the height for this item based on the columna and its text.
        
        :param      column | <int>
        """
        tree = self.treeWidget()
        if not tree:
            return
        
        w = tree.width()
        if tree.verticalScrollBar().isVisible():
            w -= tree.verticalScrollBar().width()
        
        doc = QtGui.QTextDocument()
        doc.setTextWidth(w)
        doc.setHtml(self.text(0))
        height = doc.documentLayout().documentSize().height()
        self.setFixedHeight(height+2)