/usr/lib/python2.7/dist-packages/wxglade/xml_parse.py is in python-wxglade 0.6.8-2.2.
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Parsers used to load an app and to generate the code from an xml file.
NOTE: custom tag handler interface (called by XmlWidgetBuilder)::
class CustomTagHandler:
def start_elem(self, name, attrs):
pass
def end_elem(self, name):
return True -> the handler must be removed from the Stack
def char_data(self, data):
return False -> no further processing needed
@copyright: 2002-2007 Alberto Griggio <agriggio@users.sourceforge.net>
@license: MIT (see license.txt) - THIS PROGRAM COMES WITH NO WARRANTY
"""
import os
from cStringIO import StringIO
from xml.sax import SAXException, make_parser
from xml.sax.handler import ContentHandler
import common
import config
import edit_sizers
import errors
# ALB 2005-03-10: importing the module here prevents a segfault with python 2.4
# hmmm... need to investigate this more (it seems that import of
# xml.sax.expatreader should happen before something else... but what?)
import xml.sax.expatreader
if common.use_gui:
import wx
class XmlParsingError(SAXException):
"""\
Custom exception to report problems during parsing
"""
locator = None
def __init__(self, msg):
if self.locator:
l = self.locator
msg += ' _((line: %s, column: %s))' % (l.getLineNumber(),
l.getColumnNumber())
SAXException.__init__(self, msg)
# end of class XmlParsingError
class XmlParser(ContentHandler):
"""\
'abstract' base class of the parsers used to load an app and to generate
the code
@ivar _curr_prop: Name of the current property
@ivar _curr_prop_val: Value of the current property (list into which the
various pieces of char data collected are inserted)
@ivar _objects: Stack of 'alive' objects
@ivar _sizer_item: Stack of sizer items
@ivar _sizers: Stack of sizer objects
@ivar _windows: Stack of window objects (derived by wxWindow)
@ivar locator: Document locator
"""
def __init__(self):
self._objects = Stack()
self._windows = Stack()
self._sizers = Stack()
self._sizer_item = Stack()
self._curr_prop = None
self._curr_prop_val = []
self._appl_started = False
self.top = self._objects.top
self.parser = make_parser()
self.parser.setContentHandler(self)
self.locator = None
def parse(self, source):
# Permanent workaround for Python bug "Sax parser crashes if given
# unicode file name" (http://bugs.python.org/issue11159).
#
# This bug causes a UnicodeEncodeError if the SAX XML parser wants to
# store an unicode filename internally.
#
# That's not a general file handling issue because the parameter
# source is an open file already.
source = StringIO(source.read())
self.parser.parse(source)
source.close()
def parse_string(self, source):
source = StringIO(source)
self.parser.parse(source)
source.close()
def setDocumentLocator(self, locator):
self.locator = locator
XmlParsingError.locator = locator
def startElement(self, name, attrs):
raise NotImplementedError
def endElement(self, name, attrs):
raise NotImplementedError
def characters(self, data):
raise NotImplementedError
def pop(self):
try:
return self._objects.pop().pop()
except AttributeError:
return None
# end of class XmlParser
class XmlWidgetBuilder(XmlParser):
"""\
parser used to build the tree of widgets from an xml file
"""
def startElement(self, name, attrs):
if name == 'application':
# get properties of the app
self._appl_started = True
app = common.app_tree.app
encoding = attrs.get("encoding")
if encoding:
try:
unicode('a', encoding)
except LookupError:
pass
else:
app.encoding = encoding
app.encoding_prop.set_value(encoding)
path = attrs.get("path")
if path:
app.output_path = path
app.outpath_prop.set_value(path)
name = attrs.get("name")
if name:
app.name = name
app.name_prop.toggle_active(True)
app.name_prop.set_value(name)
klass = attrs.get("class")
if klass:
app.klass = klass
app.klass_prop.toggle_active(True)
app.klass_prop.set_value(klass)
option = attrs.get("option")
if option:
try:
option = int(option)
except ValueError:
option = config.default_multiple_files
app.codegen_opt = option
app.codegen_prop.set_value(option)
language = attrs.get('language')
if language:
app.codewriters_prop.set_str_value(language)
app.set_language(language)
top_win = attrs.get("top_window")
if top_win:
self.top_window = top_win
try:
use_gettext = int(attrs["use_gettext"])
except (KeyError, ValueError):
use_gettext = config.default_use_gettext
if use_gettext:
app.use_gettext = True
app.use_gettext_prop.set_value(True)
try:
is_template = int(attrs["is_template"])
except (KeyError, ValueError):
is_template = False
app.is_template = is_template
try:
overwrite = int(attrs['overwrite'])
except (KeyError, ValueError):
overwrite = config.default_overwrite
if overwrite:
app.overwrite = True
app.overwrite_prop.set_value(True)
else:
app.overwrite = False
app.overwrite_prop.set_value(False)
try:
use_new_namespace = int(attrs['use_new_namespace'])
except (KeyError, ValueError):
use_new_namespace = False
app.set_use_old_namespace(not use_new_namespace)
app.use_old_namespace_prop.set_value(not use_new_namespace)
indent_symbol = attrs.get("indent_symbol")
if indent_symbol == 'space':
app.indent_mode = 1
elif indent_symbol == 'tab':
app.indent_mode = 0
app.indent_mode_prop.set_value(app.indent_mode)
indent = attrs.get("indent_amount")
if indent:
try:
indent_amount = int(indent)
except (KeyError, ValueError):
indent_amount = config.default_indent_amount
else:
app.indent_amount = indent_amount
app.indent_amount_prop.set_value(indent_amount)
source_extension = attrs.get("source_extension")
if source_extension and source_extension[0] == '.':
app.source_ext = source_extension[1:]
app.source_ext_prop.set_value(source_extension[1:])
header_extension = attrs.get("header_extension")
if header_extension and header_extension[0] == '.':
app.header_ext = header_extension[1:]
app.header_ext_prop.set_value(header_extension[1:])
try:
for_version = attrs['for_version']
app.for_version = for_version
app.for_version_prop.set_str_value(for_version)
except KeyError:
pass
return
if not self._appl_started:
raise XmlParsingError(
_("the root of the tree must be <application>")
)
if name == 'object':
# create the object and push it on the appropriate stacks
XmlWidgetObject(attrs, self)
else:
# handling of the various properties
try:
# look for a custom handler to push on the stack
handler = self.top().obj.get_property_handler(name)
if handler:
self.top().prop_handlers.push(handler)
# get the top custom handler and use it if there's one
handler = self.top().prop_handlers.top()
if handler:
handler.start_elem(name, attrs)
except AttributeError:
pass
self._curr_prop = name
def endElement(self, name):
if name == 'application':
self._appl_started = False
if hasattr(self, 'top_window'):
common.app_tree.app.top_window = self.top_window
common.app_tree.app.top_win_prop.SetStringSelection(
self.top_window)
return
if name == 'object':
# remove last object from the stack
obj = self.pop()
if obj.klass in ('sizeritem', 'sizerslot'):
return
si = self._sizer_item.top()
if si is not None and si.parent == obj.parent:
sprop = obj.obj.sizer_properties
# update the values
sprop['option'].set_value(si.obj.option)
sprop['flag'].set_value(si.obj.flag_str())
sprop['border'].set_value(si.obj.border)
# call the setter functions
obj.obj['option'][1](si.obj.option)
obj.obj['flag'][1](si.obj.flag_str())
obj.obj['border'][1](si.obj.border)
else:
# end of a property or error
# 1: set _curr_prop value
data = common._encode_from_xml("".join(self._curr_prop_val))
if data:
try:
handler = self.top().prop_handlers.top()
if not handler or handler.char_data(data):
# if char_data returned False,
# we don't have to call add_property
self.top().add_property(self._curr_prop, data)
except AttributeError:
pass
# 2: call custom end_elem handler
try:
# if there is a custom handler installed for this property,
# call its end_elem function: if this returns True, remove
# the handler from the Stack
handler = self.top().prop_handlers.top()
if handler.end_elem(name):
self.top().prop_handlers.pop()
except AttributeError:
pass
self._curr_prop = None
self._curr_prop_val = []
def characters(self, data):
if not data or data.isspace():
return
if self._curr_prop is None:
raise XmlParsingError(_("character data can be present only "
"inside properties"))
self._curr_prop_val.append(data)
# end of class XmlWidgetBuilder
class ProgressXmlWidgetBuilder(XmlWidgetBuilder):
"""\
Adds support for a progress dialog to the widget builder parser
"""
def __init__(self, *args, **kwds):
self.input_file = kwds.get('input_file')
if self.input_file:
del kwds['input_file']
self.size = len(self.input_file.readlines())
self.input_file.seek(0)
self.progress = wx.ProgressDialog(
_("Loading..."),
_("Please wait while loading the app"),
20
)
self.step = 4
self.i = 1
else:
self.size = 0
self.progress = None
XmlWidgetBuilder.__init__(self, *args, **kwds)
def endElement(self, name):
if self.progress:
if name == 'application':
self.progress.Destroy()
else:
if self.locator:
where = self.locator.getLineNumber()
value = int(round(where * 20.0 / self.size))
else:
# we don't have any information, so we update the progress
# bar ``randomly''
value = (self.step * self.i) % 20
self.i += 1
self.progress.Update(value)
XmlWidgetBuilder.endElement(self, name)
def parse(self, *args):
try:
XmlWidgetBuilder.parse(self, *args)
finally:
if self.progress:
self.progress.Destroy()
def parse_string(self, *args):
try:
XmlWidgetBuilder.parse_string(self, *args)
finally:
if self.progress:
self.progress.Destroy()
# end of class ProgressXmlWidgetBuilder
class ClipboardXmlWidgetBuilder(XmlWidgetBuilder):
"""\
Parser used to cut&paste widgets. The differences with XmlWidgetBuilder
are:
- No <application> tag in the piece of xml to parse
- Fake parent, sizer and sizeritem objects to push on the three stacks:
they keep info about the destination of the hierarchy of widgets (i.e.
the target of the 'paste' command)
- The first widget built must be hidden and shown again at the end of
the operation
"""
def __init__(self, parent, sizer, pos, option, flag, border):
XmlWidgetBuilder.__init__(self)
self.parent_node = parent.node
class XmlClipboardObject(object):
def __init__(self, **kwds):
self.__dict__.update(kwds)
par = XmlClipboardObject(obj=parent, parent=parent) # fake window obj
if sizer is not None:
# fake sizer object
szr = XmlClipboardObject(obj=sizer, parent=parent)
sizeritem = Sizeritem()
sizeritem.option = option
sizeritem.flag = flag
sizeritem.border = border
sizeritem.pos = pos
# fake sizer item
si = XmlClipboardObject(obj=sizeritem, parent=parent)
# push the fake objects on the stacks
self._objects.push(par)
self._windows.push(par)
if sizer is not None:
self._objects.push(szr)
self._sizers.push(szr)
self._objects.push(si)
self._sizer_item.push(si)
self.depth_level = 0
self._appl_started = True # no application tag when parsing from the
# clipboard
def startElement(self, name, attrs):
if name == 'object' and attrs.has_key('name'):
# generate a unique name for the copy
oldname = str(attrs['name'])
newname = oldname
i = 0
while common.app_tree.has_name(newname,node=self.parent_node ):
if not i:
newname = '%s_copy' % oldname
else:
newname = '%s_copy_%s' % (oldname, i)
i += 1
attrs = dict(attrs)
attrs['name'] = newname
XmlWidgetBuilder.startElement(self, name, attrs)
if name == 'object':
if not self.depth_level:
common.app_tree.auto_expand = False
try:
self.top_obj = self.top().obj
except AttributeError:
common.message.exception(
_('Exception! obj: %s') % self.top_obj
)
self.depth_level += 1
def endElement(self, name):
if name == 'object':
obj = self.top()
self.depth_level -= 1
if not self.depth_level:
common.app_tree.auto_expand = True
try:
# show the first object and update its layout
common.app_tree.show_widget(self.top_obj.node)
self.top_obj.show_properties()
common.app_tree.select_item(self.top_obj.node)
except AttributeError:
common.message.exception(
_('Exception! obj: %s') % self.top_obj
)
XmlWidgetBuilder.endElement(self, name)
# end of class ClipboardXmlWidgetBuilder
class XmlWidgetObject(object):
"""\
A class to encapsulate a widget read from an xml file: its purpose is to
store various widget attributes until the widget can be created
@ivar in_sizers: If True, the widget is a sizer, opposite of L{in_windows}
@type in_sizers: Boolean
@ivar in_windows: If True, the wiget is not a sizer, pposite of
L{in_sizers}
@type in_windows: Boolean
@ivar prop_handlers: Is a stack of custom handler functions to set
properties of this object
"""
def __init__(self, attrs, parser):
self.prop_handlers = Stack()
self.parser = parser
self.in_windows = self.in_sizers = False
try:
base = attrs.get('base', None)
self.klass = attrs['class']
except KeyError:
raise XmlParsingError(_("'object' items must have a 'class' "
"attribute"))
if base is not None:
# if base is not None, the object is a widget (or sizer), and
# not a sizeritem
sizer = self.parser._sizers.top()
parent = self.parser._windows.top()
if parent is not None:
parent = self.parent = parent.obj
else:
self.parent = None
sizeritem = self.parser._sizer_item.top()
if sizeritem is not None:
sizeritem = sizeritem.obj
if sizer is not None:
# we must check if the sizer on the top of the stack is
# really the one we are looking for: to check this
if sizer.parent != parent:
sizer = None
else:
sizer = sizer.obj
if hasattr(sizeritem, 'pos'):
pos = sizeritem.pos
else:
pos = None
if parent and hasattr(parent, 'virtual_sizer') and \
parent.virtual_sizer:
sizer = parent.virtual_sizer
sizer.node = parent.node
sizeritem = Sizeritem()
if pos is None:
pos = sizer.get_itempos(attrs)
# build the widget
if pos is not None:
pos = int(pos)
self.obj = common.widgets_from_xml[base](attrs, parent, sizer,
sizeritem, pos)
try:
#self.obj.klass = self.klass
self.obj.set_klass(self.klass)
self.obj.klass_prop.set_value(self.klass)
except AttributeError:
pass
# push the object on the appropriate stack
if isinstance(self.obj, edit_sizers.SizerBase):
self.parser._sizers.push(self)
self.in_sizers = True
else:
self.parser._windows.push(self)
self.in_windows = True
elif self.klass == 'sizeritem':
self.obj = Sizeritem()
self.parent = self.parser._windows.top().obj
self.parser._sizer_item.push(self)
elif self.klass == 'sizerslot':
sizer = self.parser._sizers.top().obj
assert sizer is not None, \
_("malformed wxg file: slots can only be inside sizers!")
sizer.add_slot()
self.parser._sizer_item.push(self)
# push the object on the _objects stack
self.parser._objects.push(self)
def pop(self):
if self.in_windows:
return self.parser._windows.pop()
elif self.in_sizers:
return self.parser._sizers.pop()
else:
return self.parser._sizer_item.pop()
def add_property(self, name, val):
"""\
adds a property to this widget. This method is not called if there
was a custom handler for this property, and its char_data method
returned False
"""
if name == 'pos': # sanity check, this shouldn't happen...
print 'add_property pos'
return
try:
self.obj[name][1](val) # call the setter for this property
try:
prop = self.obj.properties[name]
prop.set_value(val)
prop.toggle_active(True)
except AttributeError:
pass
except KeyError:
# unknown property for this object
# issue a warning and ignore the property
import sys
print >> sys.stderr, _("Warning: property '%s' not supported "
"by this object ('%s') ") % (name, self.obj)
#end of class XmlWidgetObject
class CodeWriter(XmlParser):
"""\
Parser used to produce the source from a given XML file
@ivar _toplevels: Toplevel objects, i.e. instances of a custom class
@ivar app_attrs: Attributes of the app (name, class, top_window)
@type app_attrs: Dictionary
@ivar top_win: Class name of the top window of the app (if any)
@type top_win: String
@ivar out_path: This allows to override the output path specified in the
XML file
@ivar preview: If True, we are generating the code for the preview
@type preview: Boolean
"""
def __init__(self, writer, input, from_string=False, out_path=None,
preview=False, class_names=None):
# writer: object that actually writes the code
XmlParser.__init__(self)
self._toplevels = Stack()
self.app_attrs = {}
self.top_win = ''
self.out_path = out_path
self.code_writer = writer
self.preview = preview
# used in the CustomWidget preview code, to generate better previews
# (see widgets/custom_widget/codegen.py)
self.class_names = class_names
if self.class_names is None:
self.class_names = set()
if from_string:
self.parse_string(input)
else:
inputfile = None
try:
inputfile = open(input)
self.parse(inputfile)
finally:
if inputfile:
inputfile.close()
def startElement(self, name, attrs_impl):
attrs = {}
try:
encoding = self.app_attrs['encoding']
unicode('a', encoding)
except (KeyError, LookupError):
if name == 'application':
encoding = str(attrs_impl.get(
'encoding',
config.default_encoding
))
else:
encoding = config.default_encoding
# turn all the attribute values from unicode to str objects
for attr, val in attrs_impl.items():
attrs[attr] = common._encode_from_xml(val, encoding)
if name == 'application':
# get the code generation options
self._appl_started = True
self.app_attrs = attrs
try:
attrs['option'] = bool(int(attrs['option']))
use_multiple_files = attrs['option']
except (KeyError, ValueError):
use_multiple_files = attrs['option'] = \
config.default_multiple_files
if self.out_path is None:
try:
self.out_path = attrs['path']
except KeyError:
raise XmlParsingError(_("'path' attribute missing: could "
"not generate code"))
else:
attrs['path'] = self.out_path
# Prevent empty output path
if not self.out_path:
raise XmlParsingError(
_("'path' attribute empty: could not generate code")
)
# Check if the values of use_multiple_files and out_path agree
if use_multiple_files:
if not os.path.isdir(self.out_path):
raise errors.WxgOutputDirectoryNotExist(self.out_path)
if not os.access(self.out_path, os.W_OK):
raise errors.WxgOutputDirectoryNotWritable(self.out_path)
else:
if os.path.isdir(self.out_path):
raise errors.WxgOutputPathIsDirectory(self.out_path)
directory = os.path.dirname(self.out_path)
if directory:
if not os.path.isdir(directory):
raise errors.WxgOutputDirectoryNotExist(directory)
if not os.access(directory, os.W_OK):
raise errors.WxgOutputDirectoryNotWritable(directory)
# initialize the writer
self.code_writer.initialize(attrs)
return
if not self._appl_started:
raise XmlParsingError(
_("the root of the tree must be <application>")
)
if name == 'object':
# create the CodeObject which stores info about the current widget
CodeObject(attrs, self, preview=self.preview)
if attrs.has_key('name') and \
attrs['name'] == self.app_attrs.get('top_window', ''):
self.top_win = attrs['class']
else:
# handling of the various properties
try:
# look for a custom handler to push on the stack
w = self.top()
handler = self.code_writer.get_property_handler(name, w.base)
if handler:
w.prop_handlers.push(handler)
# get the top custom handler and use it if there's one
handler = w.prop_handlers.top()
if handler:
handler.start_elem(name, attrs)
except AttributeError:
common.message.exception(_('ATTRIBUTE ERROR!!'))
self._curr_prop = name
def endElement(self, name):
if name == 'application':
self._appl_started = False
if self.app_attrs:
self.code_writer.add_app(self.app_attrs, self.top_win)
# call the finalization function of the code writer
self.code_writer.finalize()
return
if name == 'object':
obj = self.pop()
if obj.klass in ('sizeritem', 'sizerslot'):
return
# at the end of the object, we have all the information to add it
# to its toplevel parent, or to generate the code for the custom
# class
if obj.is_toplevel and not obj.in_sizers:
self.code_writer.add_class(obj)
topl = self._toplevels.top()
if topl:
self.code_writer.add_object(topl, obj)
# if the object is not a sizeritem, check whether it
# belongs to some sizer (in this case,
# self._sizer_item.top() doesn't return None): if so,
# write the code to add it to the sizer at the top of
# the stack
si = self._sizer_item.top()
if si is not None and si.parent == obj.parent:
szr = self._sizers.top()
if not szr:
return
self.code_writer.add_sizeritem(topl, szr, obj,
si.obj.option,
si.obj.flag_str(),
si.obj.border)
else:
# end of a property or error
# 1: set _curr_prop value
try:
encoding = self.app_attrs['encoding']
unicode('a', encoding)
except (KeyError, LookupError):
encoding = config.default_encoding
data = common._encode_from_xml(u"".join(self._curr_prop_val),
encoding)
if data:
handler = self.top().prop_handlers.top()
if not handler or handler.char_data(data):
# if char_data returned False,
# we don't have to call add_property
self.top().add_property(self._curr_prop, data)
# 2: call custom end_elem handler
try:
# if there is a custom handler installed for this property,
# call its end_elem function: if this returns True, remove
# the handler from the stack
obj = self.top()
handler = obj.prop_handlers.top()
if handler.end_elem(name, obj):
obj.prop_handlers.pop()
except AttributeError:
pass
self._curr_prop = None
self._curr_prop_val = []
def characters(self, data):
if not data or data.isspace():
return
if self._curr_prop is None:
raise XmlParsingError(_("character data can only appear inside "
"properties"))
self._curr_prop_val.append(data)
# end of class CodeWriter
class CodeObject(object):
"""\
A class to store information needed to generate the code for a given
object.
@ivar in_sizers: If True, the widget is a sizer, opposite of L{in_windows}
@type in_sizers: Boolean
@ivar in_windows: If True, the wiget is not a sizer, pposite of
L{in_sizers}
@type in_windows: Boolean
@ivar is_container: If True, the widget is a container (frame, dialog,
panel, ...)
@type is_container: Boolean
@ivar is_toplevel: If True, the object is a toplevel one: for window
objects, this means that they are instances of a
custom class, for sizers, that they are at the top
of the hierarchy.
@type is_toplevel: Boolean
@ivar properties: Properties of the widget sizer
@type properties: Dictionary
@ivar prop_handlers: Is a stack of custom handler functions to set
properties of this object
"""
def __init__(self, attrs, parser, preview=False):
self.parser = parser
self.in_windows = self.in_sizers = False
self.is_toplevel = False
self.is_container = False
self.properties = {}
self.prop_handlers = Stack()
self.preview = preview
try:
base = attrs.get('base', None)
self.klass = attrs['class']
except KeyError:
raise XmlParsingError(_("'object' items must have a 'class' "
"attribute"))
self.parser._objects.push(self)
self.parent = self.parser._windows.top()
if self.parent is not None:
self.parent.is_container = True
self.base = None
if base is not None: # this is a ``real'' object, not a sizeritem
self.name = attrs['name']
self.base = common.class_names[base]
can_be_toplevel = common.toplevels.has_key(base)
if (self.parent is None or self.klass != self.base) and \
can_be_toplevel:
#self.base != 'CustomWidget':
self.is_toplevel = True
# ALB 2005-11-19: for panel objects, if the user sets a
# custom class but (s)he doesn't want the code
# to be generated...
if int(attrs.get('no_custom_class', False)) and \
not self.preview:
self.is_toplevel = False
#print 'OK:', str(self)
#self.in_windows = True
#self.parser._windows.push(self)
else:
self.parser._toplevels.push(self)
elif self.preview and not can_be_toplevel and \
self.base != 'CustomWidget':
# if this is a custom class, but not a toplevel one,
# for the preview we have to use the "real" class
#
# ALB 2007-08-04: CustomWidgets handle this in a special way
# (see widgets/custom_widget/codegen.py)
self.klass = self.base
# temporary hack: to detect a sizer, check whether the name
# of its class contains the string 'Sizer': TODO: find a
# better way!!
if base.find('Sizer') != -1:
self.in_sizers = True
if not self.parser._sizers.count():
self.is_toplevel = True
else:
# the sizer is a toplevel one if its parent has not a
# sizer yet
sz = self.parser._sizers.top()
if sz.parent != self.parent:
self.is_toplevel = True
self.parser._sizers.push(self)
else:
self.parser._windows.push(self)
self.in_windows = True
else: # the object is a sizeritem
self.obj = Sizeritem()
self.obj.flag_s = '0'
self.parser._sizer_item.push(self)
def __str__(self):
return "<xml_code_object: %s, %s, %s>" % (self.name, self.base,
self.klass)
def add_property(self, name, value):
if hasattr(self, 'obj'): # self is a sizeritem
try:
if name == 'flag':
## flag = 0
## for f in value.split('|'):
## flag |= Sizeritem.flags[f.strip()]
## setattr(self.obj, name, flag)
self.obj.flag_s = value.strip()
else:
setattr(self.obj, name, int(value))
except:
raise XmlParsingError(_("property '%s' not supported by "
"'%s' objects") % (name, self.klass))
self.properties[name] = value
def pop(self):
if self.is_toplevel and not self.in_sizers:
self.parser._toplevels.pop()
if self.in_windows:
return self.parser._windows.pop()
elif self.in_sizers:
return self.parser._sizers.pop()
else:
return self.parser._sizer_item.pop()
# end of class CodeObject
class Stack(object):
def __init__(self):
self._repr = []
def push(self, elem):
self._repr.append(elem)
def pop(self):
try:
return self._repr.pop()
except IndexError:
return None
def top(self):
try:
return self._repr[-1]
except IndexError:
return None
def count(self):
return len(self._repr)
# end of class Stack
class Sizeritem(object):
if common.use_gui:
flags = {'wxALL': wx.ALL,
'wxEXPAND': wx.EXPAND, 'wxALIGN_RIGHT': wx.ALIGN_RIGHT,
'wxALIGN_BOTTOM': wx.ALIGN_BOTTOM,
'wxALIGN_CENTER_HORIZONTAL': wx.ALIGN_CENTER_HORIZONTAL,
'wxALIGN_CENTER_VERTICAL': wx.ALIGN_CENTER_VERTICAL,
'wxLEFT': wx.LEFT, 'wxRIGHT': wx.RIGHT,
'wxTOP': wx.TOP,
'wxBOTTOM': wx.BOTTOM,
'wxSHAPED': wx.SHAPED,
'wxADJUST_MINSIZE': wx.ADJUST_MINSIZE, }
flags['wxFIXED_MINSIZE'] = wx.FIXED_MINSIZE
def __init__(self):
self.option = self.border = 0
self.flag = 0
def __getitem__(self, name):
if name != 'flag':
return (None, lambda v: setattr(self, name, v))
def get_flag(v):
val = reduce(lambda a, b: a | b,
[Sizeritem.flags[t] for t in v.split("|")])
setattr(self, name, val)
return (None, get_flag)
## lambda v: setattr(self, name,
## reduce(lambda a,b: a|b,
## [Sizeritem.flags[t] for t in
## v.split("|")])))
def flag_str(self):
"""\
Returns the flag attribute as a string of tokens separated by a '|'
(used during the code generation)
"""
if hasattr(self, 'flag_s'):
return self.flag_s
else:
try:
tmp = {}
for k in self.flags:
if self.flags[k] & self.flag:
tmp[k] = 1
# patch to make wxALL work
remove_wxall = 4
for k in ('wxLEFT', 'wxRIGHT', 'wxTOP', 'wxBOTTOM'):
if k in tmp:
remove_wxall -= 1
if remove_wxall:
try:
del tmp['wxALL']
except KeyError:
pass
else:
for k in ('wxLEFT', 'wxRIGHT', 'wxTOP', 'wxBOTTOM'):
try:
del tmp[k]
except KeyError:
pass
tmp['wxALL'] = 1
tmp = '|'.join(tmp.keys())
except:
print 'EXCEPTION: self.flags = %s, self.flag = %s' % \
(self.flags, repr(self.flag))
raise
if tmp:
return tmp
else:
return '0'
# end of class Sizeritem
|