如何使用QFileSystemModel来填充带有子目录的多个QComboBox?
我已经建立了一个项目管理工具,使我可以创建和管理我的项目。我目前正在使用os.listdir和json的组合来填充和验证我的QComboboxes。但是我正在尝试使用QFileSystemModel学习更多的modelview方法。
所以这就是我所拥有的:
class FileSystemModel(QW.QFileSystemModel):
def __init__(self, root, parent=None):
QW.QFileSystemModel.__init__(self, parent)
self.root = root
self.rootIndex = self.setRootPath(root)
class Window(QW.QWidget):
def __init__(self, parent=None):
super(Window, self).__init__()
self.init()
def init(self):
layout = QW.QVBoxLayout()
self.cbox = QW.QComboBox()
self.cbox2 = QW.QComboBox()
self.model = FileSystemModel("C:\\projects\\")
self.cbox.setModel(self.model)
self.cbox2.setModel(self.model)
self.cbox.setRootModelIndex(self.model.rootIndex)
self.cbox.currentIndexChanged.connect(self._indexChanged)
layout.addWidget(self.cbox)
layout.addWidget(self.cbox2)
self.setLayout(layout)
def _indexChanged(self):
row = self.sender().currentIndex()
index = self.sender().rootModelIndex().child(row, 0)
self.cbox2.setRootModelIndex(index)
def main():
app = QW.QApplication(sys.argv)
win = Window()
win.show()
sys.exit(app.exec_())
[我试图使用cbox的索引重新填充cbox2,但对于我的代码,它似乎不起作用-只是保持空白。
好的,这里是您所拥有的修改后的版本:
from sys import exit as sysExit
from PyQt5.QtCore import QDir, pyqtSlot
from PyQt5.QtWidgets import QApplication, QWidget, QFileSystemModel, QHBoxLayout, QComboBox
class SysDirModel(QFileSystemModel):
def __init__(self, DirPath):
QFileSystemModel.__init__(self)
self.setFilter(QDir.NoDotAndDotDot | QDir.AllDirs)
self.setReadOnly(True)
# Property
self.setRootPath(DirPath)
# Property
self.RootIndex = self.index(DirPath)
class SysFileModel(QFileSystemModel):
def __init__(self, DirPath):
QFileSystemModel.__init__(self)
self.setFilter(QDir.NoDotAndDotDot | QDir.Files)
self.setReadOnly(True)
# Property
self.setRootPath(DirPath)
# Property
self.RootIndex = self.index(DirPath)
def ResetPath(self, DirPath):
self.setRootPath(DirPath)
self.RootIndex = self.index(DirPath)
class MainWindow(QWidget):
def __init__(self):
QWidget.__init__(self)
self.setGeometry(150, 150, 450, 100)
# If you use forward slash this works in Windows as well and it is cleaner
self.SysDirs = SysDirModel('C:/projects/')
self.SysFils = SysFileModel('C:/projects/')
# Setup first ComboBox
self.cbxDirs = QComboBox()
self.cbxDirs.setMinimumWidth(200)
self.cbxDirs.setModel(self.SysDirs)
self.cbxDirs.setRootModelIndex(self.SysDirs.RootIndex)
# This sends a Signal to a predefined Slot
self.cbxDirs.currentIndexChanged.connect(self.IndexChanged)
self.cbxFiles = QComboBox()
self.cbxFiles.setMinimumWidth(200)
self.cbxFiles.setModel(self.SysFils)
self.cbxFiles.setRootModelIndex(self.SysFils.RootIndex)
HBox = QHBoxLayout()
HBox.addWidget(self.cbxDirs)
HBox.addStretch(1)
HBox.addWidget(self.cbxFiles)
self.setLayout(HBox)
# This is the receiver of a Signal (aka Slot) so it ought to be used as such
@pyqtSlot(int)
def IndexChanged(self, RowIdx):
# Get your Current DirPath based on the Selected Value
index = self.cbxDirs.rootModelIndex().child(RowIdx, 0)
DirPath = self.cbxDirs.model().filePath(index)
# Reset what ComboBox 2's Model and what it is looking at
self.cbxFiles.clear()
self.SysFils.ResetPath(DirPath)
self.cbxFiles.setModel(self.SysFils)
if __name__ == '__main__':
MainThred = QApplication([])
MainGui = MainWindow()
MainGui.show()
sysExit(MainThred.exec_())