gajim-plural/gajim/gtk/filechoosers.py

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# Copyright (C) 2018 Philipp Hörist <philipp AT hoerist.com>
#
# This file is part of Gajim.
#
# Gajim is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Gajim is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Gajim. If not, see <http://www.gnu.org/licenses/>.
import os
import sys
from pathlib import Path
from collections import namedtuple
from gi.repository import Gtk
from gi.repository import GdkPixbuf
from gi.repository import GObject
from gajim.common import app
Filter = namedtuple('Filter', 'name pattern default')
def _require_native():
if app.is_flatpak():
return True
if sys.platform in ('win32', 'darwin'):
return True
return False
# Notes: Adding mime types to Gtk.FileFilter forces non-native dialogs
class BaseFileChooser:
def _on_response(self, dialog, response, accept_cb, cancel_cb):
if response == Gtk.ResponseType.ACCEPT:
if self.get_select_multiple():
accept_cb(dialog.get_filenames())
else:
accept_cb(dialog.get_filename())
if response in (Gtk.ResponseType.CANCEL,
Gtk.ResponseType.DELETE_EVENT):
if cancel_cb is not None:
cancel_cb()
def _add_filters(self, filters):
for filterinfo in filters:
filter_ = Gtk.FileFilter()
filter_.set_name(filterinfo.name)
if isinstance(filterinfo.pattern, list):
for mime_type in filterinfo.pattern:
filter_.add_mime_type(mime_type)
else:
filter_.add_pattern(filterinfo.pattern)
self.add_filter(filter_)
if filterinfo.default:
self.set_filter(filter_)
def _update_preview(self, filechooser):
path_to_file = filechooser.get_preview_filename()
preview = filechooser.get_preview_widget()
if path_to_file is None or os.path.isdir(path_to_file):
# nothing to preview
preview.clear()
return
try:
pixbuf = GdkPixbuf.Pixbuf.new_from_file_at_size(
path_to_file, *self._preivew_size)
except GObject.GError:
preview.clear()
return
filechooser.get_preview_widget().set_from_pixbuf(pixbuf)
class BaseFileOpenDialog:
_title = _('Choose File to Send…')
_filters = [Filter(_('All files'), '*', True)]
class BaseAvatarChooserDialog:
_title = _('Choose Avatar…')
_preivew_size = (100, 100)
if _require_native():
_filters = [Filter(_('PNG files'), '*.png', True),
Filter(_('JPEG files'), '*.jp*g', False),
Filter(_('SVG files'), '*.svg', False)]
else:
_filters = [Filter(_('Images'), ['image/png',
'image/jpeg',
'image/svg+xml'], True)]
class NativeFileChooserDialog(Gtk.FileChooserNative, BaseFileChooser):
_title = ''
_filters = []
_action = Gtk.FileChooserAction.OPEN
def __init__(self, accept_cb, cancel_cb=None, transient_for=None,
path=None, file_name=None, select_multiple=False,
modal=False):
Gtk.FileChooserNative.__init__(self,
title=self._title,
action=self._action,
transient_for=transient_for)
self.set_current_folder(path or str(Path.home()))
if file_name is not None:
self.set_current_name(file_name)
self.set_select_multiple(select_multiple)
self.set_do_overwrite_confirmation(True)
self.set_modal(modal)
self._add_filters(self._filters)
self.connect('response', self._on_response, accept_cb, cancel_cb)
self.show()
class ArchiveChooserDialog(NativeFileChooserDialog):
_title = _('Choose Archive')
_filters = [Filter(_('All files'), '*', False),
Filter(_('ZIP files'), '*.zip', True)]
class FileSaveDialog(NativeFileChooserDialog):
_title = _('Save File as…')
_filters = [Filter(_('All files'), '*', True)]
_action = Gtk.FileChooserAction.SAVE
class AvatarSaveDialog(FileSaveDialog):
if sys.platform == 'win32':
_filters = [Filter(_('Images'), '*.png;*.jpg;*.jpeg;*.svg', True)]
class NativeFileOpenDialog(BaseFileOpenDialog, NativeFileChooserDialog):
pass
class NativeAvatarChooserDialog(BaseAvatarChooserDialog, NativeFileChooserDialog):
pass
class GtkFileChooserDialog(Gtk.FileChooserDialog, BaseFileChooser):
_title = ''
_filters = []
_action = Gtk.FileChooserAction.OPEN
_preivew_size = (200, 200)
def __init__(self, accept_cb, cancel_cb=None, transient_for=None,
path=None, file_name=None, select_multiple=False,
preview=True, modal=False):
Gtk.FileChooserDialog.__init__(
self,
title=self._title,
action=self._action,
buttons=[Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
Gtk.STOCK_OPEN, Gtk.ResponseType.ACCEPT],
transient_for=transient_for)
self.set_current_folder(path or str(Path.home()))
if file_name is not None:
self.set_current_name(file_name)
self.set_select_multiple(select_multiple)
self.set_do_overwrite_confirmation(True)
self.set_modal(modal)
self._add_filters(self._filters)
if preview:
self.set_use_preview_label(False)
self.set_preview_widget(Gtk.Image())
self.connect('selection-changed', self._update_preview)
self.connect('response', self._on_response, accept_cb, cancel_cb)
self.show()
def _on_response(self, *args):
super()._on_response(*args)
self.destroy()
class GtkFileOpenDialog(BaseFileOpenDialog, GtkFileChooserDialog):
pass
class GtkAvatarChooserDialog(BaseAvatarChooserDialog, GtkFileChooserDialog):
pass
def FileChooserDialog(*args, **kwargs):
if _require_native():
return NativeFileOpenDialog(*args, **kwargs)
else:
return GtkFileOpenDialog(*args, **kwargs)
def AvatarChooserDialog(*args, **kwargs):
if _require_native():
return NativeAvatarChooserDialog(*args, **kwargs)
else:
return GtkAvatarChooserDialog(*args, **kwargs)