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Python GTK : confirm overwrite dialog blocks filechooser dialog

转载 作者:行者123 更新时间:2023-12-01 04:52:47 26 4
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我有一个 Gtk.Button,它打开 Gtk.FileChooserDialog 来保存文件。我实现了一个用于确认的 Gtk.Dialog,当所选文件名已存在于要保存文件的目标文件夹中时,该对话框会弹出。如果我在此对话框中单击“取消”,确认对话框将被销毁,但我无法使用“取消” ' 或 Gtk.FileChooserDialog 的“保存”按钮不再存在。任何帮助表示赞赏。谢谢。

#!/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()

最佳答案

离开 response =dialog.run() 运行循环后,您需要重新创建文件对话框,或者再次调用 dialog.run()将文件对话框放回到运行循环中,以便您可以找出按下了哪些按钮。

重构它,使文件对话框处理程序位于单独的函数中应该可以解决问题(未经测试,但您会明白的)

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))
self.handle_file_dialog(dialog)

def handle_file_dialog(self, dialog):
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
dialog2.destroy()
else:
dialog2.destroy()
# We need to re-run the file dialog to detect the buttons
self.handle_file_dialog(dialog)
return
else:
cansave = True
if cansave == True: # save new file
open(dialog.get_filename(), "w").close
dialog.destroy()
else:
pass
else:
dialog.destroy()

关于Python GTK : confirm overwrite dialog blocks filechooser dialog,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/28075809/

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