使QTableWidget 增加自动添加行,单击删除行的功能.

# -*- coding:utf-8 -*-'''Created on 2015年8月4日@author: DXLCopyright (C) 2004-2012 Shandong Leadom Software Development Co.,Ltd'''from PyQt4 import QtGui,QtCorefrom ui import resource_rcclass TableWidgetHelper(QtCore.QObject):    def __init__(self,parent,del_column=None):        QtCore.QObject.__init__(self,parent)        if not isinstance(parent,QtGui.QTableWidget) or parent.columnCount()<=0:            print ' Parent of TableWidgetHelper must is QTableWidget and its has one column at last.'             self._parent = None        else:            self._parent = parent            self._parent.currentCellChanged.connect(self.onItemChanged)            self._parent.cellClicked.connect(self.onClickedItem)            self._parent.setContextMenuPolicy(QtCore.Qt.ActionsContextMenu)            #self._addActions = []        if isinstance(del_column,int) or del_column is None:            self._del_column = del_column            if self._del_column is not None and self._parent:                if not self._parent.rowCount():                     self.onItemChanged(0,0)                del_all_action = QtGui.QAction(u"清空",self._parent)                del_all_action.triggered.connect(self.onDelAll)                del_select_action = QtGui.QAction(u"删除所选",self._parent)                del_select_action.triggered.connect(self.onDelSelect)                insert_action = QtGui.QAction(u"增加一行",self._parent)                insert_action.triggered.connect(self.onAddItem)                self._parent.addAction(del_all_action)                self._parent.addAction(del_select_action)                self._parent.addAction(insert_action)        else:            print 'Variant of del_column hast unexcept type.'            self._del_column = None    def onDelAll(self):        if self._parent:            self._parent.setRowCount(0)        pass    def onAddItem(self):        if self._parent:            r = self._parent.rowCount()-1 if self._parent.rowCount() else 0            self.onItemChanged(r, 0)        pass    def onDelSelect(self):        select_rows = set()        for rg in self._parent.selectedRanges():            for i in range(rg.topRow(),rg.bottomRow()+1):                select_rows.add(i)        select_rows = list(select_rows)        select_rows.sort(reverse=True)        for index in select_rows:            self._parent.removeRow(index)        pass    def onClickedItem(self,r,c):        if self._del_column is None or not self._parent:            return        if  c == self._del_column:            ret = QtGui.QMessageBox.warning(self._parent, u'警告', u'是否删除第%s行?'%(r+1,), QtGui.QMessageBox.Yes|QtGui.QMessageBox.No)            if ret == QtGui.QMessageBox.Yes:                self._parent.removeRow(r)                return            else:                return    def  onItemChanged(self,r,c):        if self._del_column is None or not self._parent:            return        if r + 1 >= self._parent.rowCount():            #for i in range(self._parent.columnCount()):            self._parent.insertRow(self._parent.rowCount())             item = QtGui.QTableWidgetItem(QtGui.QIcon(':/icon/del.png'),'')            self._parent.setItem(self._parent.rowCount()-1,self._del_column,item)  if __name__ == "__main__":    a = QtGui.QApplication([])    w = QtGui.QTableWidget()    w.setColumnCount(5)#     w.setRowCount(10)#     for i in range(10):#         for j in range(5):#             insert_str = "(%s,%s)"%(i,j)#             item = QtGui.QTableWidgetItem(insert_str)#             w.setItem(i,j,item)    w_helper = TableWidgetHelper(w,4)    w.show()    a.exec_()