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import string
from Tkinter import TclError
###$ event <<newline-and-indent>>
###$ win <Key-Return>
###$ win <KP_Enter>
###$ unix <Key-Return>
###$ unix <KP_Enter>
###$ event <<indent-region>>
###$ win <Control-bracketright>
###$ unix <Alt-bracketright>
###$ unix <Control-bracketright>
###$ event <<dedent-region>>
###$ win <Control-bracketleft>
###$ unix <Alt-bracketleft>
###$ unix <Control-bracketleft>
###$ event <<comment-region>>
###$ win <Alt-Key-3>
###$ unix <Alt-Key-3>
###$ event <<uncomment-region>>
###$ win <Alt-Key-4>
###$ unix <Alt-Key-4>
###$ event <<tabify-region>>
###$ win <Alt-Key-5>
###$ unix <Alt-Key-5>
###$ event <<untabify-region>>
###$ win <Alt-Key-6>
###$ unix <Alt-Key-6>
class AutoIndent:
menudefs = [
('edit', [
None,
('_Indent region', '<<indent-region>>'),
('_Dedent region', '<<dedent-region>>'),
('Comment _out region', '<<comment-region>>'),
('U_ncomment region', '<<uncomment-region>>'),
('Tabify region', '<<tabify-region>>'),
('Untabify region', '<<untabify-region>>'),
]),
]
keydefs = {
'<<smart-backspace>>': ['<Key-BackSpace>'],
'<<newline-and-indent>>': ['<Key-Return>', '<KP_Enter>'],
}
windows_keydefs = {
'<<indent-region>>': ['<Control-bracketright>'],
'<<dedent-region>>': ['<Control-bracketleft>'],
'<<comment-region>>': ['<Alt-Key-3>'],
'<<uncomment-region>>': ['<Alt-Key-4>'],
'<<tabify-region>>': ['<Alt-Key-5>'],
'<<untabify-region>>': ['<Alt-Key-6>'],
}
unix_keydefs = {
'<<indent-region>>': ['<Alt-bracketright>',
'<Meta-bracketright>',
'<Control-bracketright>'],
'<<dedent-region>>': ['<Alt-bracketleft>',
'<Meta-bracketleft>',
'<Control-bracketleft>'],
'<<comment-region>>': ['<Alt-Key-3>', '<Meta-Key-3>'],
'<<uncomment-region>>': ['<Alt-Key-4>', '<Meta-Key-4>'],
'<<tabify-region>>': ['<Alt-Key-5>', '<Meta-Key-5>'],
'<<untabify-region>>': ['<Alt-Key-6>', '<Meta-Key-6>'],
}
prefertabs = 0
spaceindent = 4*" "
def __init__(self, editwin):
self.text = editwin.text
def config(self, **options):
for key, value in options.items():
if key == 'prefertabs':
self.prefertabs = value
elif key == 'spaceindent':
self.spaceindent = value
else:
raise KeyError, "bad option name: %s" % `key`
def smart_backspace_event(self, event):
text = self.text
try:
first = text.index("sel.first")
last = text.index("sel.last")
except TclError:
first = last = None
if first and last:
text.delete(first, last)
text.mark_set("insert", first)
return "break"
# After Tim Peters
ndelete = 1
chars = text.get("insert linestart", "insert")
i = 0
n = len(chars)
while i < n and chars[i] in " \t":
i = i+1
if i == n and chars[-4:] == " ":
ndelete = 4
text.delete("insert - %d chars" % ndelete, "insert")
return "break"
def newline_and_indent_event(self, event):
text = self.text
try:
first = text.index("sel.first")
last = text.index("sel.last")
except TclError:
first = last = None
if first and last:
text.delete(first, last)
text.mark_set("insert", first)
line = text.get("insert linestart", "insert")
i, n = 0, len(line)
while i < n and line[i] in " \t":
i = i+1
indent = line[:i]
lastchar = text.get("insert -1c")
if lastchar == ":":
if not indent:
if self.prefertabs:
indent = "\t"
else:
indent = self.spaceindent
elif indent[-1] == "\t":
indent = indent + "\t"
else:
indent = indent + self.spaceindent
text.insert("insert", "\n" + indent)
text.see("insert")
return "break"
auto_indent = newline_and_indent_event
def indent_region_event(self, event):
head, tail, chars, lines = self.get_region()
for pos in range(len(lines)):
line = lines[pos]
if line:
i, n = 0, len(line)
while i < n and line[i] in " \t":
i = i+1
line = line[:i] + " " + line[i:]
lines[pos] = line
self.set_region(head, tail, chars, lines)
return "break"
def dedent_region_event(self, event):
head, tail, chars, lines = self.get_region()
for pos in range(len(lines)):
line = lines[pos]
if line:
i, n = 0, len(line)
while i < n and line[i] in " \t":
i = i+1
indent, line = line[:i], line[i:]
if indent:
if indent == "\t" or indent[-2:] == "\t\t":
indent = indent[:-1] + " "
elif indent[-4:] == " ":
indent = indent[:-4]
else:
indent = string.expandtabs(indent, 8)
indent = indent[:-4]
line = indent + line
lines[pos] = line
self.set_region(head, tail, chars, lines)
return "break"
def comment_region_event(self, event):
head, tail, chars, lines = self.get_region()
for pos in range(len(lines)):
line = lines[pos]
if not line:
continue
lines[pos] = '##' + line
self.set_region(head, tail, chars, lines)
def uncomment_region_event(self, event):
head, tail, chars, lines = self.get_region()
for pos in range(len(lines)):
line = lines[pos]
if not line:
continue
if line[:2] == '##':
line = line[2:]
elif line[:1] == '#':
line = line[1:]
lines[pos] = line
self.set_region(head, tail, chars, lines)
def tabify_region_event(self, event):
head, tail, chars, lines = self.get_region()
lines = map(tabify, lines)
self.set_region(head, tail, chars, lines)
def untabify_region_event(self, event):
head, tail, chars, lines = self.get_region()
lines = map(string.expandtabs, lines)
self.set_region(head, tail, chars, lines)
def get_region(self):
text = self.text
head = text.index("sel.first linestart")
tail = text.index("sel.last -1c lineend +1c")
if not (head and tail):
head = text.index("insert linestart")
tail = text.index("insert lineend +1c")
chars = text.get(head, tail)
lines = string.split(chars, "\n")
return head, tail, chars, lines
def set_region(self, head, tail, chars, lines):
text = self.text
newchars = string.join(lines, "\n")
if newchars == chars:
text.bell()
return
text.tag_remove("sel", "1.0", "end")
text.mark_set("insert", head)
text.delete(head, tail)
text.insert(head, newchars)
text.tag_add("sel", head, "insert")
def tabify(line, tabsize=8):
spaces = tabsize * ' '
for i in range(0, len(line), tabsize):
if line[i:i+tabsize] != spaces:
break
else:
i = len(line)
return '\t' * (i/tabsize) + line[i:]
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