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我已经构建了一个可检查的树视图列表文件/文件夹。我正在保存检查的文件/文件夹，并将它们写入文件。当我再次启动树视图时，我希望它检查我保存的所有路径。但我无法获得路径的正确索引。

class CheckableModel(QtGui.QFileSystemModel):
    def __init__(self, tView, parent=None):
        QtGui.QFileSystemModel.__init__(self, tView)
        self.tView = tView
        self.checks = {}

        backupstr = fileread(os.path.join(os.path.expanduser("~"), "Desktop"), "saved.txt", "utf-16")

        if backupstr:
            backuplist = backupstr.split('\n')
            for backupitem in backuplist:        
                self.setData(self.index(backupitem), QtCore.Qt(QtCore.Qt.Checked), QtCore.Qt.CheckStateRole)

我尝试使用self.index(QString)，但它始终无法正常工作。就像，当我尝试从（在取消选中以这种方式加载的节点时）删除此条目self.checks时，它无法在self.checks.

那么，QModelIndex当我们只有路径时，在树视图中获取索引 () 的正确方法是什么？

编辑：

setData()实施如下：

def setData(self, index, value, role):

    if (role == QtCore.Qt.CheckStateRole) and (index.column() == 0):
        if value == QtCore.Qt.Checked:
            self.removesubfolders(index)
            self.checks[index] = value
            count = self.rowCount(index)

            self.dataChanged.emit(index.child(0, 0), index.child(count - 1, 0))
            self.tView.collapse(index)
            return True

        elif value == QtCore.Qt.Unchecked:
            self.removesubfolders(index)
            self.tView.collapse(index)
            return True

    return QtGui.QFileSystemModel.setData(self, index, value, role)


def removesubfolders(self, index):
    checkedItems = []

    for otherindex, othervalue in self.checks.items():
        if othervalue.toBool():
            checkedItems.append(str(self.filePath(otherindex)))

    uncheckpath = str(self.filePath(index))
    indices = [removeindex for removeindex in checkedItems if (removeindex.find(uncheckpath) != -1)]

    for idx in indices:
        localidx = self.index(idx)
        if localidx in self.checks:
            self.checks.pop(localidx)
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1 回答 1

0

Found a work around. Instead of keeping QModelIndex of a tree node, Am maintaining the file / folder path. This seems to work.

class CheckableDirModel(QtGui.QFileSystemModel):
   def __init__(self, tView, parent=None):
    QtGui.QFileSystemModel.__init__(self, tView)
    self.tView = tView
    self.checks = {}
    backupstr = fileread(os.path.join(os.path.expanduser("~"), "Desktop"), "saved.txt", "utf-8")

    if backupstr:
        backuplist = backupstr.split('\n')
        for backupitem in backuplist:
            self.checks[backupitem] = QtCore.Qt.Checked

def setData(self, index, value, role):

    if (role == QtCore.Qt.CheckStateRole) and (index.column() == 0):
        self.tView.selectionchanged = True
        if value == QtCore.Qt.Checked:
            self.removesubfolders(index)
            self.checks[str(self.filePath(index))] = QtCore.Qt.Checked
        elif value == QtCore.Qt.Unchecked:
            self.removesubfolders(index)

def removesubfolders(self, index):
    checkedItems = []

    for otherindex, othervalue in self.checks.items():
        if othervalue == QtCore.Qt.Checked:
            checkedItems.append(otherindex)

    uncheckpath = str(self.filePath(index))
    indices = [removeindex for removeindex in checkedItems if self.eligibleIndex(removeindex, uncheckpath)]

    for idx in indices:

        localidx = self.index(idx)
        if str(self.filePath(localidx)) in self.checks:
           self.checks.pop(str(self.filePath(localidx)))
于 2015-11-18T06:15:39.100 回答