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from gi.repository import Gtk
from gi.repository import Gdk
from gi.repository import Gio
from gi.repository import GObject
import sys
class MyWindow(Gtk.ApplicationWindow):
def __init__(self, app):
Gtk.Window.__init__(
self, title="FileChooserDialog Example", application=app)
self.set_default_size(400, 400)
# the actions for the window menu, connected to the callback functions
new_action = Gio.SimpleAction.new("new", None)
new_action.connect("activate", self.new_callback)
self.add_action(new_action)
open_action = Gio.SimpleAction.new("open", None)
open_action.connect("activate", self.open_callback)
self.add_action(open_action)
save_action = Gio.SimpleAction.new("save", None)
save_action.connect("activate", self.save_callback)
self.add_action(save_action)
save_as_action = Gio.SimpleAction.new("save-as", None)
save_as_action.connect("activate", self.save_as_callback)
self.add_action(save_as_action)
# the file
self.file = None
# the textview with the buffer
self.buffer = Gtk.TextBuffer()
textview = Gtk.TextView(buffer=self.buffer)
textview.set_wrap_mode(Gtk.WrapMode.WORD)
# a scrolled window for the textview
self.scrolled_window = Gtk.ScrolledWindow()
self.scrolled_window.set_policy(
Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.AUTOMATIC)
self.scrolled_window.add(textview)
self.scrolled_window.set_border_width(5)
# add the scrolled window to the window
self.add(self.scrolled_window)
# callback for new
def new_callback(self, action, parameter):
self.buffer.set_text("")
print "New file created"
# callback for open
def open_callback(self, action, parameter):
# create a filechooserdialog to open:
# the arguments are: title of the window, parent_window, action,
# (buttons, response)
open_dialog = Gtk.FileChooserDialog("Pick a file", self,
Gtk.FileChooserAction.OPEN,
(Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
Gtk.STOCK_OPEN, Gtk.ResponseType.ACCEPT))
# not only local files can be selected in the file selector
open_dialog.set_local_only(False)
# dialog always on top of the textview window
open_dialog.set_modal(True)
# connect the dialog with the callback function open_response_cb()
open_dialog.connect("response", self.open_response_cb)
# show the dialog
open_dialog.show()
# callback function for the dialog open_dialog
def open_response_cb(self, dialog, response_id):
open_dialog = dialog
# if response is "ACCEPT" (the button "Open" has been clicked)
if response_id == Gtk.ResponseType.ACCEPT:
# self.file is the file that we get from the FileChooserDialog
self.file = open_dialog.get_file()
# an empty string (provisionally)
content = ""
try:
# load the content of the file into memory:
# success is a boolean depending on the success of the operation
# content is self-explanatory
# etags is an entity tag (can be used to quickly determine if the
# file has been modified from the version on the file system)
[success, content, etags] = self.file.load_contents(None)
except GObject.GError as e:
print "Error: " + e.message
# set the content as the text into the buffer
self.buffer.set_text(content, len(content))
print "opened: " + open_dialog.get_filename()
# if response is "CANCEL" (the button "Cancel" has been clicked)
elif response_id == Gtk.ResponseType.CANCEL:
print "cancelled: FileChooserAction.OPEN"
# destroy the FileChooserDialog
dialog.destroy()
# callback function for save_as
def save_as_callback(self, action, parameter):
# create a filechooserdialog to save:
# the arguments are: title of the window, parent_window, action,
# (buttons, response)
save_dialog = Gtk.FileChooserDialog("Pick a file", self,
Gtk.FileChooserAction.SAVE,
(Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
Gtk.STOCK_SAVE, Gtk.ResponseType.ACCEPT))
# the dialog will present a confirmation dialog if the user types a file name that
# already exists
save_dialog.set_do_overwrite_confirmation(True)
# dialog always on top of the textview window
save_dialog.set_modal(True)
# if self.file has already been saved
if self.file is not None:
try:
# set self.file as the current filename for the file chooser
save_dialog.set_file(self.file)
except GObject.GError as e:
print "Error: " + e.message
# connect the dialog to the callback function save_response_cb()
save_dialog.connect("response", self.save_response_cb)
# show the dialog
save_dialog.show()
# callback function for the dialog save_dialog
def save_response_cb(self, dialog, response_id):
save_dialog = dialog
# if response is "ACCEPT" (the button "Save" has been clicked)
if response_id == Gtk.ResponseType.ACCEPT:
# self.file is the currently selected file
self.file = save_dialog.get_file()
# save to file (see below)
self.save_to_file()
# if response is "CANCEL" (the button "Cancel" has been clicked)
elif response_id == Gtk.ResponseType.CANCEL:
print "cancelled: FileChooserAction.SAVE"
# destroy the FileChooserDialog
dialog.destroy()
# callback function for save
def save_callback(self, action, parameter):
# if self.file is not already there
if self.file is not None:
self.save_to_file()
# self.file is a new file
else:
# use save_as
self.save_as_callback(action, parameter)
# save_to_file
def save_to_file(self):
# get the content of the buffer, without hidden characters
[start, end] = self.buffer.get_bounds()
current_contents = self.buffer.get_text(start, end, False)
# if there is some content
if current_contents != "":
# set the content as content of self.file.
# arguments: contents, etags, make_backup, flags, GError
try:
self.file.replace_contents(current_contents,
None,
False,
Gio.FileCreateFlags.NONE,
None)
print "saved: " + self.file.get_path()
except GObject.GError as e:
print "Error: " + e.message
# if the contents are empty
else:
# create (if the file does not exist) or overwrite the file in readwrite mode.
# arguments: etags, make_backup, flags, GError
try:
self.file.replace_readwrite(None,
False,
Gio.FileCreateFlags.NONE,
None)
print "saved: " + self.file.get_path()
except GObject.GError as e:
print "Error: " + e.message
class MyApplication(Gtk.Application):
def __init__(self):
Gtk.Application.__init__(self)
def do_activate(self):
win = MyWindow(self)
win.show_all()
def do_startup(self):
Gtk.Application.do_startup(self)
# app action quit, connected to the callback function
quit_action = Gio.SimpleAction.new("quit", None)
quit_action.connect("activate", self.quit_callback)
self.add_action(quit_action)
# get the menu from the ui file with a builder
builder = Gtk.Builder()
try:
builder.add_from_file("filechooserdialog.ui")
except:
print "file not found"
sys.exit()
menu = builder.get_object("appmenu")
self.set_app_menu(menu)
# callback function for quit
def quit_callback(self, action, parameter):
self.quit()
app = MyApplication()
exit_status = app.run(sys.argv)
sys.exit(exit_status)
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