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
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
|
:mod:`EasyDialogs` --- Basic Macintosh dialogs
==============================================
.. module:: EasyDialogs
:platform: Mac
:synopsis: Basic Macintosh dialogs.
The :mod:`EasyDialogs` module contains some simple dialogs for the Macintosh.
All routines take an optional resource ID parameter *id* with which one can
override the :const:`DLOG` resource used for the dialog, provided that the
dialog items correspond (both type and item number) to those in the default
:const:`DLOG` resource. See source code for details.
The :mod:`EasyDialogs` module defines the following functions:
.. function:: Message(str[, id[, ok]])
Displays a modal dialog with the message text *str*, which should be at most 255
characters long. The button text defaults to "OK", but is set to the string
argument *ok* if the latter is supplied. Control is returned when the user
clicks the "OK" button.
.. function:: AskString(prompt[, default[, id[, ok[, cancel]]]])
Asks the user to input a string value via a modal dialog. *prompt* is the prompt
message, and the optional *default* supplies the initial value for the string
(otherwise ``""`` is used). The text of the "OK" and "Cancel" buttons can be
changed with the *ok* and *cancel* arguments. All strings can be at most 255
bytes long. :func:`AskString` returns the string entered or :const:`None` in
case the user cancelled.
.. function:: AskPassword(prompt[, default[, id[, ok[, cancel]]]])
Asks the user to input a string value via a modal dialog. Like
:func:`AskString`, but with the text shown as bullets. The arguments have the
same meaning as for :func:`AskString`.
.. function:: AskYesNoCancel(question[, default[, yes[, no[, cancel[, id]]]]])
Presents a dialog with prompt *question* and three buttons labelled "Yes", "No",
and "Cancel". Returns ``1`` for "Yes", ``0`` for "No" and ``-1`` for "Cancel".
The value of *default* (or ``0`` if *default* is not supplied) is returned when
the :kbd:`RETURN` key is pressed. The text of the buttons can be changed with
the *yes*, *no*, and *cancel* arguments; to prevent a button from appearing,
supply ``""`` for the corresponding argument.
.. function:: ProgressBar([title[, maxval[, label[, id]]]])
Displays a modeless progress-bar dialog. This is the constructor for the
:class:`ProgressBar` class described below. *title* is the text string displayed
(default "Working..."), *maxval* is the value at which progress is complete
(default ``0``, indicating that an indeterminate amount of work remains to be
done), and *label* is the text that is displayed above the progress bar itself.
.. function:: GetArgv([optionlist[ commandlist[, addoldfile[, addnewfile[, addfolder[, id]]]]]])
Displays a dialog which aids the user in constructing a command-line argument
list. Returns the list in ``sys.argv`` format, suitable for passing as an
argument to :func:`getopt.getopt`. *addoldfile*, *addnewfile*, and *addfolder*
are boolean arguments. When nonzero, they enable the user to insert into the
command line paths to an existing file, a (possibly) not-yet-existent file, and
a folder, respectively. (Note: Option arguments must appear in the command line
before file and folder arguments in order to be recognized by
:func:`getopt.getopt`.) Arguments containing spaces can be specified by
enclosing them within single or double quotes. A :exc:`SystemExit` exception is
raised if the user presses the "Cancel" button.
*optionlist* is a list that determines a popup menu from which the allowed
options are selected. Its items can take one of two forms: *optstr* or
``(optstr, descr)``. When present, *descr* is a short descriptive string that
is displayed in the dialog while this option is selected in the popup menu. The
correspondence between *optstr*\s and command-line arguments is:
+----------------------+------------------------------------------+
| *optstr* format | Command-line format |
+======================+==========================================+
| ``x`` | :option:`-x` (short option) |
+----------------------+------------------------------------------+
| ``x:`` or ``x=`` | :option:`-x` (short option with value) |
+----------------------+------------------------------------------+
| ``xyz`` | :option:`--xyz` (long option) |
+----------------------+------------------------------------------+
| ``xyz:`` or ``xyz=`` | :option:`--xyz` (long option with value) |
+----------------------+------------------------------------------+
*commandlist* is a list of items of the form *cmdstr* or ``(cmdstr, descr)``,
where *descr* is as above. The *cmdstr*s will appear in a popup menu. When
chosen, the text of *cmdstr* will be appended to the command line as is, except
that a trailing ``':'`` or ``'='`` (if present) will be trimmed off.
.. versionadded:: 2.0
.. function:: AskFileForOpen( [message] [, typeList] [, defaultLocation] [, defaultOptionFlags] [, location] [, clientName] [, windowTitle] [, actionButtonLabel] [, cancelButtonLabel] [, preferenceKey] [, popupExtension] [, eventProc] [, previewProc] [, filterProc] [, wanted] )
Post a dialog asking the user for a file to open, and return the file selected
or :const:`None` if the user cancelled. *message* is a text message to display,
*typeList* is a list of 4-char filetypes allowable, *defaultLocation* is the
pathname, :class:`FSSpec` or :class:`FSRef` of the folder to show initially,
*location* is the ``(x, y)`` position on the screen where the dialog is shown,
*actionButtonLabel* is a string to show instead of "Open" in the OK button,
*cancelButtonLabel* is a string to show instead of "Cancel" in the cancel
button, *wanted* is the type of value wanted as a return: :class:`str`,
:class:`unicode`, :class:`FSSpec`, :class:`FSRef` and subtypes thereof are
acceptable.
.. index:: single: Navigation Services
For a description of the other arguments please see the Apple Navigation
Services documentation and the :mod:`EasyDialogs` source code.
.. function:: AskFileForSave( [message] [, savedFileName] [, defaultLocation] [, defaultOptionFlags] [, location] [, clientName] [, windowTitle] [, actionButtonLabel] [, cancelButtonLabel] [, preferenceKey] [, popupExtension] [, fileType] [, fileCreator] [, eventProc] [, wanted] )
Post a dialog asking the user for a file to save to, and return the file
selected or :const:`None` if the user cancelled. *savedFileName* is the default
for the file name to save to (the return value). See :func:`AskFileForOpen` for
a description of the other arguments.
.. function:: AskFolder( [message] [, defaultLocation] [, defaultOptionFlags] [, location] [, clientName] [, windowTitle] [, actionButtonLabel] [, cancelButtonLabel] [, preferenceKey] [, popupExtension] [, eventProc] [, filterProc] [, wanted] )
Post a dialog asking the user to select a folder, and return the folder selected
or :const:`None` if the user cancelled. See :func:`AskFileForOpen` for a
description of the arguments.
.. seealso::
`Navigation Services Reference <http://developer.apple.com/documentation/Carbon/Reference/Navigation_Services_Ref/>`_
Programmer's reference documentation for the Navigation Services, a part of the
Carbon framework.
.. _progressbar-objects:
ProgressBar Objects
-------------------
:class:`ProgressBar` objects provide support for modeless progress-bar dialogs.
Both determinate (thermometer style) and indeterminate (barber-pole style)
progress bars are supported. The bar will be determinate if its maximum value
is greater than zero; otherwise it will be indeterminate.
.. versionchanged:: 2.2
Support for indeterminate-style progress bars was added.
The dialog is displayed immediately after creation. If the dialog's "Cancel"
button is pressed, or if :kbd:`Cmd-.` or :kbd:`ESC` is typed, the dialog window
is hidden and :exc:`KeyboardInterrupt` is raised (but note that this response
does not occur until the progress bar is next updated, typically via a call to
:meth:`inc` or :meth:`set`). Otherwise, the bar remains visible until the
:class:`ProgressBar` object is discarded.
:class:`ProgressBar` objects possess the following attributes and methods:
.. attribute:: ProgressBar.curval
The current value (of type integer or long integer) of the progress bar. The
normal access methods coerce :attr:`curval` between ``0`` and :attr:`maxval`.
This attribute should not be altered directly.
.. attribute:: ProgressBar.maxval
The maximum value (of type integer or long integer) of the progress bar; the
progress bar (thermometer style) is full when :attr:`curval` equals
:attr:`maxval`. If :attr:`maxval` is ``0``, the bar will be indeterminate
(barber-pole). This attribute should not be altered directly.
.. method:: ProgressBar.title([newstr])
Sets the text in the title bar of the progress dialog to *newstr*.
.. method:: ProgressBar.label([newstr])
Sets the text in the progress box of the progress dialog to *newstr*.
.. method:: ProgressBar.set(value[, max])
Sets the progress bar's :attr:`curval` to *value*, and also :attr:`maxval` to
*max* if the latter is provided. *value* is first coerced between 0 and
:attr:`maxval`. The thermometer bar is updated to reflect the changes,
including a change from indeterminate to determinate or vice versa.
.. method:: ProgressBar.inc([n])
Increments the progress bar's :attr:`curval` by *n*, or by ``1`` if *n* is not
provided. (Note that *n* may be negative, in which case the effect is a
decrement.) The progress bar is updated to reflect the change. If the bar is
indeterminate, this causes one "spin" of the barber pole. The resulting
:attr:`curval` is coerced between 0 and :attr:`maxval` if incrementing causes it
to fall outside this range.
|
