如何管理 PyQt5 QTableWidgetItem 中数据的可见性

How to manage visibility of data in PyQt5 QTableWidgetItem

我想让一些数据隐藏在 QTableWidget 中,直到单击特定的单元格。现在我只能显示“*”而不是实际值。我想我可以在单击特定单元格并替换单击的单元格的值时以某种方式连接到操作。我也知道有一个函数 setData() 可以在 QTableWidgetItem 上调用并给我想要的行为。但是我找不到任何关于 Python 实现 qt 的有用示例。这个问题的最佳解决方案是什么?

def setTableValues(self):
    self.table.setRowCount(len(self.tableList))
    x = 0
    for acc in self.tableList:
        y = 0
        for val in acc.getValuesAsList():
            if isinstance(val,Cipher):
                val = "*"*len(val.getDecrypted())
            item = QTableWidgetItem(val)
            self.table.setItem(x,y,item)
            y += 1
        x += 1
    self.table.resizeRowsToContents()
    self.table.resizeColumnsToContents()

您可以将标志与指示文本可见性的角色相关联,然后使用委托来隐藏文本。当按下项目时,该标志将改变:

from PyQt5 import QtCore, QtGui, QtWidgets

VisibilityRole = QtCore.Qt.UserRole + 1000


class VisibilityDelegate(QtWidgets.QStyledItemDelegate):
    def initStyleOption(self, option, index):
        super().initStyleOption(option, index)
        if not index.data(VisibilityRole):
            option.text = "*" * len(option.text)


class TableWidget(QtWidgets.QTableWidget):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        delegate = VisibilityDelegate(self)
        self.setItemDelegate(delegate)
        self.visibility_index = QtCore.QModelIndex()
        self.pressed.connect(self.on_pressed)

    @QtCore.pyqtSlot(QtCore.QModelIndex)
    def on_pressed(self, index):
        if self.visibility_index.isValid():
            self.model().setData(self.visibility_index, False, VisibilityRole)
        self.visibility_index = index
        self.model().setData(self.visibility_index, True, VisibilityRole)


if __name__ == "__main__":
    import sys

    app = QtWidgets.QApplication(sys.argv)

    w = TableWidget(10, 4)
    for i in range(w.rowCount()):
        for j in range(w.columnCount()):
            it = QtWidgets.QTableWidgetItem("{}-{}".format(i, j))
            w.setItem(i, j, it)
    w.show()
    w.resize(640, 480)

    sys.exit(app.exec_())