Python GTK:确认覆盖对话框块filechooser对话框

2024-03-29 09:34:10 发布

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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()

Tags: selfgtkifinitresponsestockbuttonok
1条回答
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1楼 · 发布于 2024-03-29 09:34:10

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)

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()

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