[Python-checkins] CVS: python/dist/src/Mac/Lib aetypes.py,NONE,1.1
Jack Jansen
jackjansen@users.sourceforge.net
Sun, 19 Aug 2001 15:05:02 -0700
Update of /cvsroot/python/python/dist/src/Mac/Lib
In directory usw-pr-cvs1:/tmp/cvs-serv23245/Python/Mac/Lib
Added Files:
aetypes.py
Log Message:
Moved here from lib-toolbox, where they should never have been in the first place (all the other stuff there wa generated with bgen).
--- NEW FILE: aetypes.py ---
"""aetypes - Python objects representing various AE types."""
from AppleEvents import *
import struct
from types import *
import string
#
# convoluted, since there are cyclic dependencies between this file and
# aetools_convert.
#
def pack(*args):
from aepack import pack
return apply(pack, args)
def IsSubclass(cls, base):
"""Test whether CLASS1 is the same as or a subclass of CLASS2"""
# Loop to optimize for single inheritance
while 1:
if cls is base: return 1
if len(cls.__bases__) <> 1: break
cls = cls.__bases__[0]
# Recurse to cope with multiple inheritance
for c in cls.__bases__:
if IsSubclass(c, base): return 1
return 0
def IsInstance(x, cls):
"""Test whether OBJECT is an instance of (a subclass of) CLASS"""
return type(x) is InstanceType and IsSubclass(x.__class__, cls)
def nice(s):
"""'nice' representation of an object"""
if type(s) is StringType: return repr(s)
else: return str(s)
class Unknown:
"""An uninterpreted AE object"""
def __init__(self, type, data):
self.type = type
self.data = data
def __repr__(self):
return "Unknown(%s, %s)" % (`self.type`, `self.data`)
def __aepack__(self):
return pack(self.data, self.type)
class Enum:
"""An AE enumeration value"""
def __init__(self, enum):
self.enum = "%-4.4s" % str(enum)
def __repr__(self):
return "Enum(%s)" % `self.enum`
def __str__(self):
return string.strip(self.enum)
def __aepack__(self):
return pack(self.enum, typeEnumeration)
def IsEnum(x):
return IsInstance(x, Enum)
def mkenum(enum):
if IsEnum(enum): return enum
return Enum(enum)
class Boolean:
"""An AE boolean value"""
def __init__(self, bool):
self.bool = (not not bool)
def __repr__(self):
return "Boolean(%s)" % `self.bool`
def __str__(self):
if self.bool:
return "True"
else:
return "False"
def __aepack__(self):
return pack(struct.pack('b', self.bool), 'bool')
def IsBoolean(x):
return IsInstance(x, Boolean)
def mkboolean(bool):
if IsBoolean(bool): return bool
return Boolean(bool)
class Type:
"""An AE 4-char typename object"""
def __init__(self, type):
self.type = "%-4.4s" % str(type)
def __repr__(self):
return "Type(%s)" % `self.type`
def __str__(self):
return string.strip(self.type)
def __aepack__(self):
return pack(self.type, typeType)
def IsType(x):
return IsInstance(x, Type)
def mktype(type):
if IsType(type): return type
return Type(type)
class Keyword:
"""An AE 4-char keyword object"""
def __init__(self, keyword):
self.keyword = "%-4.4s" % str(keyword)
def __repr__(self):
return "Keyword(%s)" % `self.keyword`
def __str__(self):
return string.strip(self.keyword)
def __aepack__(self):
return pack(self.keyword, typeKeyword)
def IsKeyword(x):
return IsInstance(x, Keyword)
class Range:
"""An AE range object"""
def __init__(self, start, stop):
self.start = start
self.stop = stop
def __repr__(self):
return "Range(%s, %s)" % (`self.start`, `self.stop`)
def __str__(self):
return "%s thru %s" % (nice(self.start), nice(self.stop))
def __aepack__(self):
return pack({'star': self.start, 'stop': self.stop}, 'rang')
def IsRange(x):
return IsInstance(x, Range)
class Comparison:
"""An AE Comparison"""
def __init__(self, obj1, relo, obj2):
self.obj1 = obj1
self.relo = "%-4.4s" % str(relo)
self.obj2 = obj2
def __repr__(self):
return "Comparison(%s, %s, %s)" % (`self.obj1`, `self.relo`, `self.obj2`)
def __str__(self):
return "%s %s %s" % (nice(self.obj1), string.strip(self.relo), nice(self.obj2))
def __aepack__(self):
return pack({'obj1': self.obj1,
'relo': mkenum(self.relo),
'obj2': self.obj2},
'cmpd')
def IsComparison(x):
return IsInstance(x, Comparison)
class NComparison(Comparison):
# The class attribute 'relo' must be set in a subclass
def __init__(self, obj1, obj2):
Comparison.__init__(obj1, self.relo, obj2)
class Ordinal:
"""An AE Ordinal"""
def __init__(self, abso):
# self.obj1 = obj1
self.abso = "%-4.4s" % str(abso)
def __repr__(self):
return "Ordinal(%s)" % (`self.abso`)
def __str__(self):
return "%s" % (string.strip(self.abso))
def __aepack__(self):
return pack(self.abso, 'abso')
def IsOrdinal(x):
return IsInstance(x, Ordinal)
class NOrdinal(Ordinal):
# The class attribute 'abso' must be set in a subclass
def __init__(self):
Ordinal.__init__(self, self.abso)
class Logical:
"""An AE logical expression object"""
def __init__(self, logc, term):
self.logc = "%-4.4s" % str(logc)
self.term = term
def __repr__(self):
return "Logical(%s, %s)" % (`self.logc`, `self.term`)
def __str__(self):
if type(self.term) == ListType and len(self.term) == 2:
return "%s %s %s" % (nice(self.term[0]),
string.strip(self.logc),
nice(self.term[1]))
else:
return "%s(%s)" % (string.strip(self.logc), nice(self.term))
def __aepack__(self):
return pack({'logc': mkenum(self.logc), 'term': self.term}, 'logi')
def IsLogical(x):
return IsInstance(x, Logical)
class StyledText:
"""An AE object respresenting text in a certain style"""
def __init__(self, style, text):
self.style = style
self.text = text
def __repr__(self):
return "StyledText(%s, %s)" % (`self.style`, `self.text`)
def __str__(self):
return self.text
def __aepack__(self):
return pack({'ksty': self.style, 'ktxt': self.text}, 'STXT')
def IsStyledText(x):
return IsInstance(x, StyledText)
class AEText:
"""An AE text object with style, script and language specified"""
def __init__(self, script, style, text):
self.script = script
self.style = style
self.text = text
def __repr__(self):
return "AEText(%s, %s, %s)" % (`self.script`, `self.style`, `self.text`)
def __str__(self):
return self.text
def __aepack__(self):
return pack({keyAEScriptTag: self.script, keyAEStyles: self.style,
keyAEText: self.text}, typeAEText)
def IsAEText(x):
return IsInstance(x, AEText)
class IntlText:
"""A text object with script and language specified"""
def __init__(self, script, language, text):
self.script = script
self.language = language
self.text = text
def __repr__(self):
return "IntlText(%s, %s, %s)" % (`self.script`, `self.language`, `self.text`)
def __str__(self):
return self.text
def __aepack__(self):
return pack(struct.pack('hh', self.script, self.language)+self.text,
typeIntlText)
def IsIntlText(x):
return IsInstance(x, IntlText)
class IntlWritingCode:
"""An object representing script and language"""
def __init__(self, script, language):
self.script = script
self.language = language
def __repr__(self):
return "IntlWritingCode(%s, %s)" % (`self.script`, `self.language`)
def __str__(self):
return "script system %d, language %d"%(self.script, self.language)
def __aepack__(self):
return pack(struct.pack('hh', self.script, self.language),
typeIntlWritingCode)
def IsIntlWritingCode(x):
return IsInstance(x, IntlWritingCode)
class QDPoint:
"""A point"""
def __init__(self, v, h):
self.v = v
self.h = h
def __repr__(self):
return "QDPoint(%s, %s)" % (`self.v`, `self.h`)
def __str__(self):
return "(%d, %d)"%(self.v, self.h)
def __aepack__(self):
return pack(struct.pack('hh', self.v, self.h),
typeQDPoint)
def IsQDPoint(x):
return IsInstance(x, QDPoint)
class QDRectangle:
"""A rectangle"""
def __init__(self, v0, h0, v1, h1):
self.v0 = v0
self.h0 = h0
self.v1 = v1
self.h1 = h1
def __repr__(self):
return "QDRectangle(%s, %s, %s, %s)" % (`self.v0`, `self.h0`,
`self.v1`, `self.h1`)
def __str__(self):
return "(%d, %d)-(%d, %d)"%(self.v0, self.h0, self.v1, self.h1)
def __aepack__(self):
return pack(struct.pack('hhhh', self.v0, self.h0, self.v1, self.h1),
typeQDRectangle)
def IsQDRectangle(x):
return IsInstance(x, QDRectangle)
class RGBColor:
"""An RGB color"""
def __init__(self, r, g, b):
self.r = r
self.g = g
self.b = b
def __repr__(self):
return "RGBColor(%s, %s, %s)" % (`self.r`, `self.g`, `self.b`)
def __str__(self):
return "0x%x red, 0x%x green, 0x%x blue"% (self.r, self.g, self.b)
def __aepack__(self):
return pack(struct.pack('hhh', self.r, self.g, self.b),
typeRGBColor)
def IsRGBColor(x):
return IsInstance(x, RGBColor)
class ObjectSpecifier:
"""A class for constructing and manipulation AE object specifiers in python.
An object specifier is actually a record with four fields:
key type description
--- ---- -----------
'want' type 4-char class code of thing we want,
e.g. word, paragraph or property
'form' enum how we specify which 'want' thing(s) we want,
e.g. by index, by range, by name, or by property specifier
'seld' any which thing(s) we want,
e.g. its index, its name, or its property specifier
'from' object the object in which it is contained,
or null, meaning look for it in the application
Note that we don't call this class plain "Object", since that name
is likely to be used by the application.
"""
def __init__(self, want, form, seld, fr = None):
self.want = want
self.form = form
self.seld = seld
self.fr = fr
def __repr__(self):
s = "ObjectSpecifier(%s, %s, %s" % (`self.want`, `self.form`, `self.seld`)
if self.fr:
s = s + ", %s)" % `self.fr`
else:
s = s + ")"
return s
def __aepack__(self):
return pack({'want': mktype(self.want),
'form': mkenum(self.form),
'seld': self.seld,
'from': self.fr},
'obj ')
def IsObjectSpecifier(x):
return IsInstance(x, ObjectSpecifier)
# Backwards compatability, sigh...
class Property(ObjectSpecifier):
def __init__(self, which, fr = None, want='prop'):
ObjectSpecifier.__init__(self, want, 'prop', mktype(which), fr)
def __repr__(self):
if self.fr:
return "Property(%s, %s)" % (`self.seld.type`, `self.fr`)
else:
return "Property(%s)" % `self.seld.type`
def __str__(self):
if self.fr:
return "Property %s of %s" % (str(self.seld), str(self.fr))
else:
return "Property %s" % str(self.seld)
class NProperty(ObjectSpecifier):
# Subclasses *must* self baseclass attributes:
# want is the type of this property
# which is the property name of this property
def __init__(self, fr = None):
#try:
# dummy = self.want
#except:
# self.want = 'prop'
self.want = 'prop'
ObjectSpecifier.__init__(self, self.want, 'prop',
mktype(self.which), fr)
def __repr__(self):
rv = "Property(%s"%`self.seld.type`
if self.fr:
rv = rv + ", fr=%s" % `self.fr`
if self.want != 'prop':
rv = rv + ", want=%s" % `self.want`
return rv + ")"
def __str__(self):
if self.fr:
return "Property %s of %s" % (str(self.seld), str(self.fr))
else:
return "Property %s" % str(self.seld)
class SelectableItem(ObjectSpecifier):
def __init__(self, want, seld, fr = None):
t = type(seld)
if t == StringType:
form = 'name'
elif IsRange(seld):
form = 'rang'
elif IsComparison(seld) or IsLogical(seld):
form = 'test'
elif t == TupleType:
# Breakout: specify both form and seld in a tuple
# (if you want ID or rele or somesuch)
form, seld = seld
else:
form = 'indx'
ObjectSpecifier.__init__(self, want, form, seld, fr)
class ComponentItem(SelectableItem):
# Derived classes *must* set the *class attribute* 'want' to some constant
# Also, dictionaries _propdict and _elemdict must be set to map property
# and element names to the correct classes
def __init__(self, which, fr = None):
SelectableItem.__init__(self, self.want, which, fr)
def __repr__(self):
if not self.fr:
return "%s(%s)" % (self.__class__.__name__, `self.seld`)
return "%s(%s, %s)" % (self.__class__.__name__, `self.seld`, `self.fr`)
def __str__(self):
seld = self.seld
if type(seld) == StringType:
ss = repr(seld)
elif IsRange(seld):
start, stop = seld.start, seld.stop
if type(start) == InstanceType == type(stop) and \
start.__class__ == self.__class__ == stop.__class__:
ss = str(start.seld) + " thru " + str(stop.seld)
else:
ss = str(seld)
else:
ss = str(seld)
s = "%s %s" % (self.__class__.__name__, ss)
if self.fr: s = s + " of %s" % str(self.fr)
return s
def __getattr__(self, name):
if self._elemdict.has_key(name):
cls = self._elemdict[name]
return DelayedComponentItem(cls, self)
if self._propdict.has_key(name):
cls = self._propdict[name]
return cls(self)
raise AttributeError, name
class DelayedComponentItem:
def __init__(self, compclass, fr):
self.compclass = compclass
self.fr = fr
def __call__(self, which):
return self.compclass(which, self.fr)
def __repr__(self):
return "%s(???, %s)" % (self.__class__.__name__, `self.fr`)
def __str__(self):
return "selector for element %s of %s"%(self.__class__.__name__, str(self.fr))
template = """
class %s(ComponentItem): want = '%s'
"""
exec template % ("Text", 'text')
exec template % ("Character", 'cha ')
exec template % ("Word", 'cwor')
exec template % ("Line", 'clin')
exec template % ("paragraph", 'cpar')
exec template % ("Window", 'cwin')
exec template % ("Document", 'docu')
exec template % ("File", 'file')
exec template % ("InsertionPoint", 'cins')