我有一个Gtk.按钮打开一个Gtk.filechooser对话框保存文件。我实施了一个Gtk.对话当选定的文件名已存在于要保存文件的目标文件夹中时弹出的确认。如果在此对话框中单击“取消”,确认对话框将被销毁,但我无法使用Gtk.filechooser对话框再也不会了。 感谢任何帮助。谢谢。在
#!/usr/bin/python
# -*- coding: utf-8 -*-
import os
from gi.repository import Gtk
class MainWindow(Gtk.Window):
def __init__(self):
Gtk.Window.__init__(self, title="demo")
self.set_position(Gtk.WindowPosition.CENTER)
self.button = Gtk.Button()
self.button.set_image(Gtk.Image(stock=Gtk.STOCK_SAVE))
self.button.connect('clicked', self.on_button_clicked)
self.add(self.button)
def on_button_clicked(self, widget):
dialog = Gtk.FileChooserDialog("Save file", self,
Gtk.FileChooserAction.SAVE,
(Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
Gtk.STOCK_SAVE, Gtk.ResponseType.OK))
response = dialog.run()
if response == Gtk.ResponseType.OK: # OK button was pressed or existing file was double clicked
cansave = False
if os.path.exists(dialog.get_filename()) == True: # does file already exists?
dialog2 = DialogSaveFile(self, dialog.get_filename()) # ask to confirm overwrite
response = dialog2.run()
if response == Gtk.ResponseType.OK:
cansave = True
else:
pass
dialog2.destroy()
else:
cansave = True
if cansave == True: # save new file
open(dialog.get_filename(), "w").close
dialog.destroy()
else:
pass
else:
dialog.destroy()
class DialogSaveFile(Gtk.Dialog):
def __init__(self, parent, db):
Gtk.Dialog.__init__(self, "Confirm overwrite", parent, 0,
(Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
Gtk.STOCK_OK, Gtk.ResponseType.OK))
self.box = self.get_content_area()
self.label = Gtk.Label("The file `" + db + "` exists.\nDo you want it to be overwritten?")
self.box.add(self.label)
self.show_all()
win = MainWindow()
win.connect("delete-event", Gtk.main_quit)
win.show_all()
Gtk.main()
一旦您离开了
response = dialog.run()
运行循环,您需要重新创建文件对话框,或者再次调用dialog.run()
将文件对话框放回运行循环中,这样您就可以知道按下了哪些按钮。在重新构造它,使文件对话框处理程序位于一个单独的函数中,应该可以做到这一点(虽然没有经过测试,但您会明白这一点)
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