从 QListView 中正确删除多选行

Question

我在尝试从 QListView 中正确删除多个 selected 行时遇到问题。它可以正常工作 selecting 项目从上到下，但是当你 select 多行从下到上时，它会在视图中保留 selected 行之一。

我如何解决这个问题，它可以按照用户选择的任何顺序正确删除所有 selected 行？

示例：

按此顺序选择行给出了无效的解决方案： Level5, Level3, Level2

仅删除 Level2

更改为 for items in self.listView.selectedIndexes(): 与您不能从上到下 select 的情况相反。

from PyQt5 import QtCore, QtGui, QtWidgets
import sys,functools

class Window(QtWidgets.QMainWindow):
    def __init__(self, parent = None):
        super(Window,self).__init__(parent)
        self.setCentralWidget(QtWidgets.QWidget(self))
        self.setWindowTitle('GUI')
        mainlayout = QtWidgets.QVBoxLayout()
        #Information for widgets
        self.items = {'Level1':1,'Level2':2,'Level3':3,'Level4':4,'Level5':5,'Level6':6}
        #LineEdit1
        self.button = QtWidgets.QPushButton()
        self.button.setText('Remove Selected Items')
        firstBox = QtWidgets.QHBoxLayout()
        firstBox.addWidget(self.button)
        #ListView
        self.listView = QtWidgets.QListView()
        self.listView.setSelectionMode(QtWidgets.QAbstractItemView.MultiSelection)
        secondBox = QtWidgets.QVBoxLayout()
        secondBox.addWidget(self.listView)

        #Add Layouts
        mainlayout.addLayout(firstBox)
        mainlayout.addLayout(secondBox)
        self.centralWidget().setLayout(mainlayout)
        #Model
        self.model = QtGui.QStandardItemModel()
        self.listView.setModel(self.model)

        self.button.clicked.connect(functools.partial(self.selecteditems,self.model))
        self.fillModel(self.model)

    def fillModel(self,model):
        for level in self.items:
            item = QtGui.QStandardItem(str(level))
            model.appendRow(item)

    def selecteditems(self,model):
        if len(self.listView.selectedIndexes()) > 1:
            for items in reversed(self.listView.selectedIndexes()):
                model.takeRow(items.row()) #works correctly selecting items from top to bottom, but doesn't work when selecting bottom to top
def main():
    app = QtWidgets.QApplication(sys.argv)
    window = Window()
    window.show()
    sys.exit(app.exec_())



if __name__ == '__main__':
    main()

Answer 1

您也可以只使用 reversed 和 sorted:

def selecteditems(self,model):
    if len(self.listView.selectedIndexes()) > 1:
        for items in reversed(sorted(self.listView.selectedIndexes())):
            model.takeRow(items.row())

从 QListView 中正确删除多选行

Remove multi-selected rows correctly from QListView

python

python-3.x

pyqt

pyqt5

qlistview