1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
|
"""
Copyright 2007 Free Software Foundation, Inc.
This file is part of GNU Radio
GNU Radio Companion 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 2
of the License, or (at your option) any later version.
GNU Radio Companion 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 this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
"""
import pygtk
pygtk.require('2.0')
import gtk
from Dialogs import MessageDialogHelper
from Constants import \
DEFAULT_FILE_PATH, FLOW_GRAPH_FILE_EXTENSION, \
IMAGE_FILE_EXTENSION, NEW_FLOGRAPH_TITLE
from os import path
OPEN_FLOW_GRAPH = 'open flow graph'
SAVE_FLOW_GRAPH = 'save flow graph'
SAVE_IMAGE = 'save image'
##the filter for flow graph files
FLOW_GRAPH_FILE_FILTER = gtk.FileFilter()
FLOW_GRAPH_FILE_FILTER.set_name('GRC Files')
FLOW_GRAPH_FILE_FILTER.add_pattern('*'+FLOW_GRAPH_FILE_EXTENSION)
FLOW_GRAPH_FILE_FILTER.add_pattern('*.xml') #TEMP
##the filter for image files
IMAGE_FILE_FILTER = gtk.FileFilter()
IMAGE_FILE_FILTER.set_name('Image Files')
IMAGE_FILE_FILTER.add_pattern('*'+IMAGE_FILE_EXTENSION)
##the filter for all files
ALL_FILE_FILTER = gtk.FileFilter()
ALL_FILE_FILTER.set_name('All Files')
ALL_FILE_FILTER.add_pattern('*')
class FileDialogHelper(gtk.FileChooserDialog):
"""
A wrapper class for the gtk file chooser dialog.
Implement a file chooser dialog with only necessary parameters.
"""
def __init__(self, action, title):
"""
FileDialogHelper contructor.
Create a save or open dialog with cancel and ok buttons.
Use standard settings: no multiple selection, local files only, and the * filter.
@param action gtk.FILE_CHOOSER_ACTION_OPEN or gtk.FILE_CHOOSER_ACTION_SAVE
@param title the title of the dialog (string)
"""
ok_stock = {gtk.FILE_CHOOSER_ACTION_OPEN : 'gtk-open', gtk.FILE_CHOOSER_ACTION_SAVE : 'gtk-save'}[action]
gtk.FileChooserDialog.__init__(self, title, None, action, ('gtk-cancel', gtk.RESPONSE_CANCEL, ok_stock, gtk.RESPONSE_OK))
self.set_select_multiple(False)
self.set_local_only(True)
self.add_filter(ALL_FILE_FILTER)
class FileDialog(FileDialogHelper):
"""A dialog box to save or open flow graph files. This is a base class, do not use."""
def __init__(self, current_file_path=''):
"""
FileDialog constructor.
@param current_file_path the current directory or path to the open flow graph
"""
if not current_file_path: current_file_path = path.join(DEFAULT_FILE_PATH, NEW_FLOGRAPH_TITLE + FLOW_GRAPH_FILE_EXTENSION)
if self.type == OPEN_FLOW_GRAPH:
FileDialogHelper.__init__(self, gtk.FILE_CHOOSER_ACTION_OPEN, 'Open a Flow Graph from a File...')
self.add_and_set_filter(FLOW_GRAPH_FILE_FILTER)
self.set_select_multiple(True)
elif self.type == SAVE_FLOW_GRAPH:
FileDialogHelper.__init__(self, gtk.FILE_CHOOSER_ACTION_SAVE, 'Save a Flow Graph to a File...')
self.add_and_set_filter(FLOW_GRAPH_FILE_FILTER)
self.set_current_name(path.basename(current_file_path)) #show the current filename
elif self.type == SAVE_IMAGE:
FileDialogHelper.__init__(self, gtk.FILE_CHOOSER_ACTION_SAVE, 'Save a Flow Graph Screen Shot...')
self.add_and_set_filter(IMAGE_FILE_FILTER)
current_file_path = current_file_path + IMAGE_FILE_EXTENSION
self.set_current_name(path.basename(current_file_path)) #show the current filename
self.set_current_folder(path.dirname(current_file_path)) #current directory
def add_and_set_filter(self, filter):
"""
Add the gtk file filter to the list of filters and set it as the default file filter.
@param filter a gtk file filter.
"""
self.add_filter(filter)
self.set_filter(filter)
def get_rectified_filename(self):
"""
Run the dialog and get the filename.
If this is a save dialog and the file name is missing the extension, append the file extension.
If the file name with the extension already exists, show a overwrite dialog.
If this is an open dialog, return a list of filenames.
@return the complete file path
"""
if gtk.FileChooserDialog.run(self) != gtk.RESPONSE_OK: return None #response was cancel
#############################################
# Handle Save Dialogs
#############################################
if self.type in (SAVE_FLOW_GRAPH, SAVE_IMAGE):
filename = self.get_filename()
for extension, filter in (
(FLOW_GRAPH_FILE_EXTENSION, FLOW_GRAPH_FILE_FILTER),
(IMAGE_FILE_EXTENSION, IMAGE_FILE_FILTER),
): #append the missing file extension if the filter matches
if filename[len(filename)-len(extension):] != extension \
and filter == self.get_filter(): filename += extension
self.set_current_name(path.basename(filename)) #show the filename with extension
if path.exists(filename): #ask the user to confirm overwrite
if MessageDialogHelper(
gtk.MESSAGE_QUESTION, gtk.BUTTONS_YES_NO, 'Confirm Overwrite!',
'File <b>"%s"</b> Exists!\nWould you like to overwrite the existing file?'%filename,
) == gtk.RESPONSE_NO: return self.get_rectified_filename()
return filename
#############################################
# Handle Open Dialogs
#############################################
elif self.type in (OPEN_FLOW_GRAPH,):
filenames = self.get_filenames()
for filename in filenames:
if not path.exists(filename): #show a warning and re-run
MessageDialogHelper(
gtk.MESSAGE_WARNING, gtk.BUTTONS_CLOSE, 'Cannot Open!',
'File <b>"%s"</b> Does not Exist!'%filename,
)
return self.get_rectified_filename()
return filenames
def run(self):
"""
Get the filename and destroy the dialog.
@return the filename or None if a close/cancel occured.
"""
filename = self.get_rectified_filename()
self.destroy()
return filename
class OpenFlowGraphFileDialog(FileDialog): type = OPEN_FLOW_GRAPH
class SaveFlowGraphFileDialog(FileDialog): type = SAVE_FLOW_GRAPH
class SaveImageFileDialog(FileDialog): type = SAVE_IMAGE
|
