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# Does Python source formatting for Scintilla controls.
import array
import string
import win32api
import win32con
import win32ui
from . import scintillacon
WM_KICKIDLE = 0x036A
# Used to indicate that style should use default color
from win32con import CLR_INVALID
debugging = 0
if debugging:
# Output must go to another process else the result of
# the printing itself will trigger again trigger a trace.
import win32trace
import win32traceutil
def trace(*args):
win32trace.write(" ".join(map(str, args)) + "\n")
else:
trace = lambda *args: None
class Style:
"""Represents a single format"""
def __init__(self, name, format, background=CLR_INVALID):
self.name = name # Name the format representes eg, "String", "Class"
# Default background for each style is only used when there are no
# saved settings (generally on first startup)
self.background = self.default_background = background
if type(format) == type(""):
self.aliased = format
self.format = None
else:
self.format = format
self.aliased = None
self.stylenum = None # Not yet registered.
def IsBasedOnDefault(self):
return len(self.format) == 5
# If the currently extended font defintion matches the
# default format, restore the format to the "simple" format.
def NormalizeAgainstDefault(self, defaultFormat):
if self.IsBasedOnDefault():
return 0 # No more to do, and not changed.
bIsDefault = (
self.format[7] == defaultFormat[7] and self.format[2] == defaultFormat[2]
)
if bIsDefault:
self.ForceAgainstDefault()
return bIsDefault
def ForceAgainstDefault(self):
self.format = self.format[:5]
def GetCompleteFormat(self, defaultFormat):
# Get the complete style after applying any relevant defaults.
if len(self.format) == 5: # It is a default one
fmt = self.format + defaultFormat[5:]
else:
fmt = self.format
flags = (
win32con.CFM_BOLD
| win32con.CFM_CHARSET
| win32con.CFM_COLOR
| win32con.CFM_FACE
| win32con.CFM_ITALIC
| win32con.CFM_SIZE
)
return (flags,) + fmt[1:]
# The Formatter interface
# used primarily when the actual formatting is done by Scintilla!
class FormatterBase:
def __init__(self, scintilla):
self.scintilla = scintilla
self.baseFormatFixed = (-402653169, 0, 200, 0, 0, 0, 49, "Courier New")
self.baseFormatProp = (-402653169, 0, 200, 0, 0, 0, 49, "Arial")
self.bUseFixed = 1
self.styles = {} # Indexed by name
self.styles_by_id = {} # Indexed by allocated ID.
self.SetStyles()
def HookFormatter(self, parent=None):
raise NotImplementedError()
# Used by the IDLE extensions to quickly determine if a character is a string.
def GetStringStyle(self, pos):
try:
style = self.styles_by_id[self.scintilla.SCIGetStyleAt(pos)]
except KeyError:
# A style we dont know about - probably not even a .py file - can't be a string
return None
if style.name in self.string_style_names:
return style
return None
def RegisterStyle(self, style, stylenum):
assert stylenum is not None, "We must have a style number"
assert style.stylenum is None, "Style has already been registered"
assert stylenum not in self.styles, "We are reusing a style number!"
style.stylenum = stylenum
self.styles[style.name] = style
self.styles_by_id[stylenum] = style
def SetStyles(self):
raise NotImplementedError()
def GetSampleText(self):
return "Sample Text for the Format Dialog"
def GetDefaultFormat(self):
if self.bUseFixed:
return self.baseFormatFixed
return self.baseFormatProp
# Update the control with the new style format.
def _ReformatStyle(self, style):
## Selection (background only for now)
## Passing False for WPARAM to SCI_SETSELBACK is documented as resetting to scintilla default,
## but does not work - selection background is not visible at all.
## Default value in SPECIAL_STYLES taken from scintilla source.
if style.name == STYLE_SELECTION:
clr = style.background
self.scintilla.SendScintilla(scintillacon.SCI_SETSELBACK, True, clr)
## Can't change font for selection, but could set color
## However, the font color dropbox has no option for default, and thus would
## always override syntax coloring
## clr = style.format[4]
## self.scintilla.SendScintilla(scintillacon.SCI_SETSELFORE, clr != CLR_INVALID, clr)
return
assert style.stylenum is not None, "Unregistered style."
# print "Reformat style", style.name, style.stylenum
scintilla = self.scintilla
stylenum = style.stylenum
# Now we have the style number, indirect for the actual style.
if style.aliased is not None:
style = self.styles[style.aliased]
f = style.format
if style.IsBasedOnDefault():
baseFormat = self.GetDefaultFormat()
else:
baseFormat = f
scintilla.SCIStyleSetFore(stylenum, f[4])
scintilla.SCIStyleSetFont(stylenum, baseFormat[7], baseFormat[5])
if f[1] & 1:
scintilla.SCIStyleSetBold(stylenum, 1)
else:
scintilla.SCIStyleSetBold(stylenum, 0)
if f[1] & 2:
scintilla.SCIStyleSetItalic(stylenum, 1)
else:
scintilla.SCIStyleSetItalic(stylenum, 0)
scintilla.SCIStyleSetSize(stylenum, int(baseFormat[2] / 20))
scintilla.SCIStyleSetEOLFilled(stylenum, 1) # Only needed for unclosed strings.
## Default style background to whitespace background if set,
## otherwise use system window color
bg = style.background
if bg == CLR_INVALID:
bg = self.styles[STYLE_DEFAULT].background
if bg == CLR_INVALID:
bg = win32api.GetSysColor(win32con.COLOR_WINDOW)
scintilla.SCIStyleSetBack(stylenum, bg)
def GetStyleByNum(self, stylenum):
return self.styles_by_id[stylenum]
def ApplyFormattingStyles(self, bReload=1):
if bReload:
self.LoadPreferences()
baseFormat = self.GetDefaultFormat()
defaultStyle = Style("default", baseFormat)
defaultStyle.stylenum = scintillacon.STYLE_DEFAULT
self._ReformatStyle(defaultStyle)
for style in list(self.styles.values()):
if style.aliased is None:
style.NormalizeAgainstDefault(baseFormat)
self._ReformatStyle(style)
self.scintilla.InvalidateRect()
# Some functions for loading and saving preferences. By default
# an INI file (well, MFC maps this to the registry) is used.
def LoadPreferences(self):
self.baseFormatFixed = eval(
self.LoadPreference("Base Format Fixed", str(self.baseFormatFixed))
)
self.baseFormatProp = eval(
self.LoadPreference("Base Format Proportional", str(self.baseFormatProp))
)
self.bUseFixed = int(self.LoadPreference("Use Fixed", 1))
for style in list(self.styles.values()):
new = self.LoadPreference(style.name, str(style.format))
try:
style.format = eval(new)
except:
print("Error loading style data for", style.name)
# Use "vanilla" background hardcoded in PYTHON_STYLES if no settings in registry
style.background = int(
self.LoadPreference(
style.name + " background", style.default_background
)
)
def LoadPreference(self, name, default):
return win32ui.GetProfileVal("Format", name, default)
def SavePreferences(self):
self.SavePreference("Base Format Fixed", str(self.baseFormatFixed))
self.SavePreference("Base Format Proportional", str(self.baseFormatProp))
self.SavePreference("Use Fixed", self.bUseFixed)
for style in list(self.styles.values()):
if style.aliased is None:
self.SavePreference(style.name, str(style.format))
bg_name = style.name + " background"
self.SavePreference(bg_name, style.background)
def SavePreference(self, name, value):
win32ui.WriteProfileVal("Format", name, value)
# An abstract formatter
# For all formatters we actually implement here.
# (as opposed to those formatters built in to Scintilla)
class Formatter(FormatterBase):
def __init__(self, scintilla):
self.bCompleteWhileIdle = 0
self.bHaveIdleHandler = 0 # Dont currently have an idle handle
self.nextstylenum = 0
FormatterBase.__init__(self, scintilla)
def HookFormatter(self, parent=None):
if parent is None:
parent = self.scintilla.GetParent() # was GetParentFrame()!?
parent.HookNotify(self.OnStyleNeeded, scintillacon.SCN_STYLENEEDED)
def OnStyleNeeded(self, std, extra):
notify = self.scintilla.SCIUnpackNotifyMessage(extra)
endStyledChar = self.scintilla.SendScintilla(scintillacon.SCI_GETENDSTYLED)
lineEndStyled = self.scintilla.LineFromChar(endStyledChar)
endStyled = self.scintilla.LineIndex(lineEndStyled)
# print "enPosPaint %d endStyledChar %d lineEndStyled %d endStyled %d" % (endPosPaint, endStyledChar, lineEndStyled, endStyled)
self.Colorize(endStyled, notify.position)
def ColorSeg(self, start, end, styleName):
end = end + 1
# assert end-start>=0, "Can't have negative styling"
stylenum = self.styles[styleName].stylenum
while start < end:
self.style_buffer[start] = stylenum
start = start + 1
# self.scintilla.SCISetStyling(end - start + 1, stylenum)
def RegisterStyle(self, style, stylenum=None):
if stylenum is None:
stylenum = self.nextstylenum
self.nextstylenum = self.nextstylenum + 1
FormatterBase.RegisterStyle(self, style, stylenum)
def ColorizeString(self, str, charStart, styleStart):
raise RuntimeError("You must override this method")
def Colorize(self, start=0, end=-1):
scintilla = self.scintilla
# scintilla's formatting is all done in terms of utf, so
# we work with utf8 bytes instead of unicode. This magically
# works as any extended chars found in the utf8 don't change
# the semantics.
stringVal = scintilla.GetTextRange(start, end, decode=False)
if start > 0:
stylenum = scintilla.SCIGetStyleAt(start - 1)
styleStart = self.GetStyleByNum(stylenum).name
else:
styleStart = None
# trace("Coloring", start, end, end-start, len(stringVal), styleStart, self.scintilla.SCIGetCharAt(start))
scintilla.SCIStartStyling(start, 31)
self.style_buffer = array.array("b", (0,) * len(stringVal))
self.ColorizeString(stringVal, styleStart)
scintilla.SCISetStylingEx(self.style_buffer)
self.style_buffer = None
# trace("After styling, end styled is", self.scintilla.SCIGetEndStyled())
if (
self.bCompleteWhileIdle
and not self.bHaveIdleHandler
and end != -1
and end < scintilla.GetTextLength()
):
self.bHaveIdleHandler = 1
win32ui.GetApp().AddIdleHandler(self.DoMoreColoring)
# Kicking idle makes the app seem slower when initially repainting!
# win32ui.GetMainFrame().PostMessage(WM_KICKIDLE, 0, 0)
def DoMoreColoring(self, handler, count):
try:
scintilla = self.scintilla
endStyled = scintilla.SCIGetEndStyled()
lineStartStyled = scintilla.LineFromChar(endStyled)
start = scintilla.LineIndex(lineStartStyled)
end = scintilla.LineIndex(lineStartStyled + 1)
textlen = scintilla.GetTextLength()
if end < 0:
end = textlen
finished = end >= textlen
self.Colorize(start, end)
except (win32ui.error, AttributeError):
# Window may have closed before we finished - no big deal!
finished = 1
if finished:
self.bHaveIdleHandler = 0
win32ui.GetApp().DeleteIdleHandler(handler)
return not finished
# A Formatter that knows how to format Python source
from keyword import iskeyword, kwlist
wordstarts = "_0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
wordchars = "._0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
operators = "%^&*()-+=|{}[]:;<>,/?!.~"
STYLE_DEFAULT = "Whitespace"
STYLE_COMMENT = "Comment"
STYLE_COMMENT_BLOCK = "Comment Blocks"
STYLE_NUMBER = "Number"
STYLE_STRING = "String"
STYLE_SQSTRING = "SQ String"
STYLE_TQSSTRING = "TQS String"
STYLE_TQDSTRING = "TQD String"
STYLE_KEYWORD = "Keyword"
STYLE_CLASS = "Class"
STYLE_METHOD = "Method"
STYLE_OPERATOR = "Operator"
STYLE_IDENTIFIER = "Identifier"
STYLE_BRACE = "Brace/Paren - matching"
STYLE_BRACEBAD = "Brace/Paren - unmatched"
STYLE_STRINGEOL = "String with no terminator"
STYLE_LINENUMBER = "Line numbers"
STYLE_INDENTGUIDE = "Indent guide"
STYLE_SELECTION = "Selection"
STRING_STYLES = [
STYLE_STRING,
STYLE_SQSTRING,
STYLE_TQSSTRING,
STYLE_TQDSTRING,
STYLE_STRINGEOL,
]
# These styles can have any ID - they are not special to scintilla itself.
# However, if we use the built-in lexer, then we must use its style numbers
# so in that case, they _are_ special.
# (name, format, background, scintilla id)
PYTHON_STYLES = [
(STYLE_DEFAULT, (0, 0, 200, 0, 0x808080), CLR_INVALID, scintillacon.SCE_P_DEFAULT),
(
STYLE_COMMENT,
(0, 2, 200, 0, 0x008000),
CLR_INVALID,
scintillacon.SCE_P_COMMENTLINE,
),
(
STYLE_COMMENT_BLOCK,
(0, 2, 200, 0, 0x808080),
CLR_INVALID,
scintillacon.SCE_P_COMMENTBLOCK,
),
(STYLE_NUMBER, (0, 0, 200, 0, 0x808000), CLR_INVALID, scintillacon.SCE_P_NUMBER),
(STYLE_STRING, (0, 0, 200, 0, 0x008080), CLR_INVALID, scintillacon.SCE_P_STRING),
(STYLE_SQSTRING, STYLE_STRING, CLR_INVALID, scintillacon.SCE_P_CHARACTER),
(STYLE_TQSSTRING, STYLE_STRING, CLR_INVALID, scintillacon.SCE_P_TRIPLE),
(STYLE_TQDSTRING, STYLE_STRING, CLR_INVALID, scintillacon.SCE_P_TRIPLEDOUBLE),
(STYLE_STRINGEOL, (0, 0, 200, 0, 0x000000), 0x008080, scintillacon.SCE_P_STRINGEOL),
(STYLE_KEYWORD, (0, 1, 200, 0, 0x800000), CLR_INVALID, scintillacon.SCE_P_WORD),
(STYLE_CLASS, (0, 1, 200, 0, 0xFF0000), CLR_INVALID, scintillacon.SCE_P_CLASSNAME),
(STYLE_METHOD, (0, 1, 200, 0, 0x808000), CLR_INVALID, scintillacon.SCE_P_DEFNAME),
(
STYLE_OPERATOR,
(0, 0, 200, 0, 0x000000),
CLR_INVALID,
scintillacon.SCE_P_OPERATOR,
),
(
STYLE_IDENTIFIER,
(0, 0, 200, 0, 0x000000),
CLR_INVALID,
scintillacon.SCE_P_IDENTIFIER,
),
]
# These styles _always_ have this specific style number, regardless of
# internal or external formatter.
SPECIAL_STYLES = [
(STYLE_BRACE, (0, 0, 200, 0, 0x000000), 0xFFFF80, scintillacon.STYLE_BRACELIGHT),
(STYLE_BRACEBAD, (0, 0, 200, 0, 0x000000), 0x8EA5F2, scintillacon.STYLE_BRACEBAD),
(
STYLE_LINENUMBER,
(0, 0, 200, 0, 0x000000),
win32api.GetSysColor(win32con.COLOR_3DFACE),
scintillacon.STYLE_LINENUMBER,
),
(
STYLE_INDENTGUIDE,
(0, 0, 200, 0, 0x000000),
CLR_INVALID,
scintillacon.STYLE_INDENTGUIDE,
),
## Not actually a style; requires special handling to send appropriate messages to scintilla
(
STYLE_SELECTION,
(0, 0, 200, 0, CLR_INVALID),
win32api.RGB(0xC0, 0xC0, 0xC0),
999999,
),
]
PythonSampleCode = """\
# Some Python
class Sample(Super):
def Fn(self):
\tself.v = 1024
dest = 'dest.html'
x = func(a + 1)|)
s = "I forget...
## A large
## comment block"""
class PythonSourceFormatter(Formatter):
string_style_names = STRING_STYLES
def GetSampleText(self):
return PythonSampleCode
def LoadStyles(self):
pass
def SetStyles(self):
for name, format, bg, ignore in PYTHON_STYLES:
self.RegisterStyle(Style(name, format, bg))
for name, format, bg, sc_id in SPECIAL_STYLES:
self.RegisterStyle(Style(name, format, bg), sc_id)
def ClassifyWord(self, cdoc, start, end, prevWord):
word = cdoc[start : end + 1].decode("latin-1")
attr = STYLE_IDENTIFIER
if prevWord == "class":
attr = STYLE_CLASS
elif prevWord == "def":
attr = STYLE_METHOD
elif word[0] in string.digits:
attr = STYLE_NUMBER
elif iskeyword(word):
attr = STYLE_KEYWORD
self.ColorSeg(start, end, attr)
return word
def ColorizeString(self, str, styleStart):
if styleStart is None:
styleStart = STYLE_DEFAULT
return self.ColorizePythonCode(str, 0, styleStart)
def ColorizePythonCode(self, cdoc, charStart, styleStart):
# Straight translation of C++, should do better
lengthDoc = len(cdoc)
if lengthDoc <= charStart:
return
prevWord = ""
state = styleStart
chPrev = chPrev2 = chPrev3 = " "
chNext2 = chNext = cdoc[charStart : charStart + 1].decode("latin-1")
startSeg = i = charStart
while i < lengthDoc:
ch = chNext
chNext = " "
if i + 1 < lengthDoc:
chNext = cdoc[i + 1 : i + 2].decode("latin-1")
chNext2 = " "
if i + 2 < lengthDoc:
chNext2 = cdoc[i + 2 : i + 3].decode("latin-1")
if state == STYLE_DEFAULT:
if ch in wordstarts:
self.ColorSeg(startSeg, i - 1, STYLE_DEFAULT)
state = STYLE_KEYWORD
startSeg = i
elif ch == "#":
self.ColorSeg(startSeg, i - 1, STYLE_DEFAULT)
if chNext == "#":
state = STYLE_COMMENT_BLOCK
else:
state = STYLE_COMMENT
startSeg = i
elif ch == '"':
self.ColorSeg(startSeg, i - 1, STYLE_DEFAULT)
startSeg = i
state = STYLE_COMMENT
if chNext == '"' and chNext2 == '"':
i = i + 2
state = STYLE_TQDSTRING
ch = " "
chPrev = " "
chNext = " "
if i + 1 < lengthDoc:
chNext = cdoc[i + 1]
else:
state = STYLE_STRING
elif ch == "'":
self.ColorSeg(startSeg, i - 1, STYLE_DEFAULT)
startSeg = i
state = STYLE_COMMENT
if chNext == "'" and chNext2 == "'":
i = i + 2
state = STYLE_TQSSTRING
ch = " "
chPrev = " "
chNext = " "
if i + 1 < lengthDoc:
chNext = cdoc[i + 1]
else:
state = STYLE_SQSTRING
elif ch in operators:
self.ColorSeg(startSeg, i - 1, STYLE_DEFAULT)
self.ColorSeg(i, i, STYLE_OPERATOR)
startSeg = i + 1
elif state == STYLE_KEYWORD:
if ch not in wordchars:
prevWord = self.ClassifyWord(cdoc, startSeg, i - 1, prevWord)
state = STYLE_DEFAULT
startSeg = i
if ch == "#":
if chNext == "#":
state = STYLE_COMMENT_BLOCK
else:
state = STYLE_COMMENT
elif ch == '"':
if chNext == '"' and chNext2 == '"':
i = i + 2
state = STYLE_TQDSTRING
ch = " "
chPrev = " "
chNext = " "
if i + 1 < lengthDoc:
chNext = cdoc[i + 1]
else:
state = STYLE_STRING
elif ch == "'":
if chNext == "'" and chNext2 == "'":
i = i + 2
state = STYLE_TQSSTRING
ch = " "
chPrev = " "
chNext = " "
if i + 1 < lengthDoc:
chNext = cdoc[i + 1]
else:
state = STYLE_SQSTRING
elif ch in operators:
self.ColorSeg(startSeg, i, STYLE_OPERATOR)
startSeg = i + 1
elif state == STYLE_COMMENT or state == STYLE_COMMENT_BLOCK:
if ch == "\r" or ch == "\n":
self.ColorSeg(startSeg, i - 1, state)
state = STYLE_DEFAULT
startSeg = i
elif state == STYLE_STRING:
if ch == "\\":
if chNext == '"' or chNext == "'" or chNext == "\\":
i = i + 1
ch = chNext
chNext = " "
if i + 1 < lengthDoc:
chNext = cdoc[i + 1]
elif ch == '"':
self.ColorSeg(startSeg, i, STYLE_STRING)
state = STYLE_DEFAULT
startSeg = i + 1
elif state == STYLE_SQSTRING:
if ch == "\\":
if chNext == '"' or chNext == "'" or chNext == "\\":
i = i + 1
ch = chNext
chNext = " "
if i + 1 < lengthDoc:
chNext = cdoc[i + 1]
elif ch == "'":
self.ColorSeg(startSeg, i, STYLE_SQSTRING)
state = STYLE_DEFAULT
startSeg = i + 1
elif state == STYLE_TQSSTRING:
if ch == "'" and chPrev == "'" and chPrev2 == "'" and chPrev3 != "\\":
self.ColorSeg(startSeg, i, STYLE_TQSSTRING)
state = STYLE_DEFAULT
startSeg = i + 1
elif (
state == STYLE_TQDSTRING
and ch == '"'
and chPrev == '"'
and chPrev2 == '"'
and chPrev3 != "\\"
):
self.ColorSeg(startSeg, i, STYLE_TQDSTRING)
state = STYLE_DEFAULT
startSeg = i + 1
chPrev3 = chPrev2
chPrev2 = chPrev
chPrev = ch
i = i + 1
if startSeg < lengthDoc:
if state == STYLE_KEYWORD:
self.ClassifyWord(cdoc, startSeg, lengthDoc - 1, prevWord)
else:
self.ColorSeg(startSeg, lengthDoc - 1, state)
# These taken from the SciTE properties file.
source_formatter_extensions = [
(".py .pys .pyw".split(), scintillacon.SCLEX_PYTHON),
(".html .htm .asp .shtml".split(), scintillacon.SCLEX_HTML),
(
"c .cc .cpp .cxx .h .hh .hpp .hxx .idl .odl .php3 .phtml .inc .js".split(),
scintillacon.SCLEX_CPP,
),
(".vbs .frm .ctl .cls".split(), scintillacon.SCLEX_VB),
(".pl .pm .cgi .pod".split(), scintillacon.SCLEX_PERL),
(".sql .spec .body .sps .spb .sf .sp".split(), scintillacon.SCLEX_SQL),
(".tex .sty".split(), scintillacon.SCLEX_LATEX),
(".xml .xul".split(), scintillacon.SCLEX_XML),
(".err".split(), scintillacon.SCLEX_ERRORLIST),
(".mak".split(), scintillacon.SCLEX_MAKEFILE),
(".bat .cmd".split(), scintillacon.SCLEX_BATCH),
]
class BuiltinSourceFormatter(FormatterBase):
# A class that represents a formatter built-in to Scintilla
def __init__(self, scintilla, ext):
self.ext = ext
FormatterBase.__init__(self, scintilla)
def Colorize(self, start=0, end=-1):
self.scintilla.SendScintilla(scintillacon.SCI_COLOURISE, start, end)
def RegisterStyle(self, style, stylenum=None):
assert style.stylenum is None, "Style has already been registered"
if stylenum is None:
stylenum = self.nextstylenum
self.nextstylenum = self.nextstylenum + 1
assert self.styles.get(stylenum) is None, "We are reusing a style number!"
style.stylenum = stylenum
self.styles[style.name] = style
self.styles_by_id[stylenum] = style
def HookFormatter(self, parent=None):
sc = self.scintilla
for exts, formatter in source_formatter_extensions:
if self.ext in exts:
formatter_use = formatter
break
else:
formatter_use = scintillacon.SCLEX_PYTHON
sc.SendScintilla(scintillacon.SCI_SETLEXER, formatter_use)
keywords = " ".join(kwlist)
sc.SCISetKeywords(keywords)
class BuiltinPythonSourceFormatter(BuiltinSourceFormatter):
sci_lexer_name = scintillacon.SCLEX_PYTHON
string_style_names = STRING_STYLES
def __init__(self, sc, ext=".py"):
BuiltinSourceFormatter.__init__(self, sc, ext)
def SetStyles(self):
for name, format, bg, sc_id in PYTHON_STYLES:
self.RegisterStyle(Style(name, format, bg), sc_id)
for name, format, bg, sc_id in SPECIAL_STYLES:
self.RegisterStyle(Style(name, format, bg), sc_id)
def GetSampleText(self):
return PythonSampleCode