def keypress(self, size, key):
if key in config.edit_node_key_remappings:
key = config.edit_node_key_remappings[key]
p = self.edit_pos
if key == 'enter':
self.tree_widget.stop_editing()
return None
# paste
elif key == "ctrl y":
for char in self.paste_buffer:
p = move_next_char(self.edit_text, p, -1)
self.set_edit_text(self.edit_text + char)
self.set_edit_pos(p + 1)
# kill to beginning of line
elif key == "ctrl u":
if not self._delete_highlighted():
if p == 0:
return key
while (p != 0):
p = move_prev_char(self.edit_text, 0, p)
self.paste_buffer = self.edit_text[p:] + self.paste_buffer
self.set_edit_text(self.edit_text[:p] +
self.edit_text[self.edit_pos:])
self.set_edit_pos(p)
# kill to beginning of word
elif key == "ctrl w":
if not self._delete_highlighted():
if p == 0:
return key
# first delete all whitespace
while (p != 0) and (self.edit_text[p - 1] == ' '):
p = move_prev_char(self.edit_text, 0, p)
self.paste_buffer = self.edit_text[p:] + self.paste_buffer
self.set_edit_text(self.edit_text[:p] +
self.edit_text[self.edit_pos:])
self.set_edit_pos(p)
# then delete all characters until whitespace or the beginning of the node is found
while (p != 0) and (self.edit_text[p - 1] != ' '):
p = move_prev_char(self.edit_text, 0, p)
self.paste_buffer = self.edit_text[p:] + self.paste_buffer
self.set_edit_text(self.edit_text[:p] +
self.edit_text[self.edit_pos:])
self.set_edit_pos(p)
(maxcol, maxrow) = size
key = self.__super.keypress((maxcol, ), key)
def calculate_text_segments(self, text, width, wrap):
"""
Calculate the segments of text to display given width screen
columns to display them.
text - unicode text or byte string to display
width - number of available screen columns
wrap - wrapping mode used
Returns a layout structure without alignment applied.
"""
nl, nl_o, sp_o = "\n", "\n", " "
if PYTHON3 and isinstance(text, bytes):
nl = B(nl) # can only find bytes in python3 bytestrings
nl_o = ord(nl_o) # + an item of a bytestring is the ordinal value
sp_o = ord(sp_o)
b = []
p = 0
if wrap == 'clip':
# no wrapping to calculate, so it's easy.
while p<=len(text):
n_cr = text.find(nl, p)
if n_cr == -1:
n_cr = len(text)
sc = calc_width(text, p, n_cr)
l = [(0,n_cr)]
if p!=n_cr:
l = [(sc, p, n_cr)] + l
b.append(l)
p = n_cr+1
return b
while p<=len(text):
# look for next eligible line break
n_cr = text.find(nl, p)
if n_cr == -1:
n_cr = len(text)
sc = calc_width(text, p, n_cr)
if sc == 0:
# removed character hint
b.append([(0,n_cr)])
p = n_cr+1
continue
if sc <= width:
# this segment fits
b.append([(sc,p,n_cr),
# removed character hint
(0,n_cr)])
p = n_cr+1
continue
pos, sc = calc_text_pos( text, p, n_cr, width )
if pos == p: # pathological width=1 double-byte case
raise CanNotDisplayText(
"Wide character will not fit in 1-column width")
if wrap == 'any':
b.append([(sc,p,pos)])
p = pos
continue
assert wrap == 'space'
if text[pos] == sp_o:
# perfect space wrap
b.append([(sc,p,pos),
# removed character hint
(0,pos)])
p = pos+1
continue
if is_wide_char(text, pos):
# perfect next wide
b.append([(sc,p,pos)])
p = pos
continue
prev = pos
while prev > p:
prev = move_prev_char(text, p, prev)
if text[prev] == sp_o:
sc = calc_width(text,p,prev)
l = [(0,prev)]
if p!=prev:
l = [(sc,p,prev)] + l
b.append(l)
p = prev+1
break
if is_wide_char(text,prev):
# wrap after wide char
next = move_next_char(text, prev, pos)
sc = calc_width(text,p,next)
b.append([(sc,p,next)])
p = next
break
else:
# unwrap previous line space if possible to
# fit more text (we're breaking a word anyway)
if b and (len(b[-1]) == 2 or ( len(b[-1])==1
and len(b[-1][0])==2 )):
# look for removed space above
if len(b[-1]) == 1:
[(h_sc, h_off)] = b[-1]
p_sc = 0
p_off = p_end = h_off
else:
[(p_sc, p_off, p_end),
(h_sc, h_off)] = b[-1]
if (p_sc < width and h_sc==0 and
text[h_off] == sp_o):
# combine with previous line
del b[-1]
p = p_off
pos, sc = calc_text_pos(
text, p, n_cr, width )
b.append([(sc,p,pos)])
# check for trailing " " or "\n"
p = pos
if p < len(text) and (
text[p] in (sp_o, nl_o)):
# removed character hint
b[-1].append((0,p))
p += 1
continue
# force any char wrap
b.append([(sc,p,pos)])
p = pos
return b
def calculate_text_segments( self, text, width, wrap ):
"""
Calculate the segments of text to display given width screen
columns to display them.
text - text to display
width - number of available screen columns
wrap - wrapping mode used
Returns a layout structure without aligmnent applied.
"""
b = []
p = 0
if wrap == 'clip':
# no wrapping to calculate, so it's easy.
while p<=len(text):
n_cr = text.find("\n", p)
if n_cr == -1:
n_cr = len(text)
sc = calc_width(text, p, n_cr)
l = [(0,n_cr)]
if p!=n_cr:
l = [(sc, p, n_cr)] + l
b.append(l)
p = n_cr+1
return b
while p<=len(text):
# look for next eligible line break
n_cr = text.find("\n", p)
if n_cr == -1:
n_cr = len(text)
sc = calc_width(text, p, n_cr)
if sc == 0:
# removed character hint
b.append([(0,n_cr)])
p = n_cr+1
continue
if sc <= width:
# this segment fits
b.append([(sc,p,n_cr),
# removed character hint
(0,n_cr)])
p = n_cr+1
continue
pos, sc = calc_text_pos( text, p, n_cr, width )
# FIXME: handle pathological width=1 double-byte case
if wrap == 'any':
b.append([(sc,p,pos)])
p = pos
continue
assert wrap == 'space'
if text[pos] == " ":
# perfect space wrap
b.append([(sc,p,pos),
# removed character hint
(0,pos)])
p = pos+1
continue
if is_wide_char(text, pos):
# perfect next wide
b.append([(sc,p,pos)])
p = pos
continue
prev = pos
while prev > p:
prev = move_prev_char(text, p, prev)
if text[prev] == " ":
sc = calc_width(text,p,prev)
l = [(0,prev)]
if p!=prev:
l = [(sc,p,prev)] + l
b.append(l)
p = prev+1
break
if is_wide_char(text,prev):
# wrap after wide char
next = move_next_char(text, prev, pos)
sc = calc_width(text,p,next)
b.append([(sc,p,next)])
p = next
break
else:
# unwrap previous line space if possible to
# fit more text (we're breaking a word anyway)
if b and (len(b[-1]) == 2 or ( len(b[-1])==1
and len(b[-1][0])==2 )):
# look for removed space above
if len(b[-1]) == 1:
[(h_sc, h_off)] = b[-1]
p_sc = 0
p_off = p_end = h_off
else:
[(p_sc, p_off, p_end),
(h_sc, h_off)] = b[-1]
if (p_sc < width and h_sc==0 and
text[h_off] == " "):
# combine with previous line
del b[-1]
p = p_off
pos, sc = calc_text_pos(
text, p, n_cr, width )
b.append([(sc,p,pos)])
# check for trailing " " or "\n"
p = pos
if p < len(text) and (
text[p] in (" ","\n")):
# removed character hint
b[-1].append((0,p))
p += 1
continue
# force any char wrap
b.append([(sc,p,pos)])
p = pos
return b
def calculate_text_segments(self, text, width, wrap):
"""
Calculate the segments of text to display given width screen
columns to display them.
text - unicode text or byte string to display
width - number of available screen columns
wrap - wrapping mode used
Returns a layout structure without alignment applied.
"""
# TODO: This function is a horror and a mess, and really hard to
# understand. It's based on urwids StandardLayout, which by itself
# is overly complex, and I added tab handling, which made it worse.
# It's a prime candidate for refacturing, making easier to understand
# and as it is heavily used, profiling would be nice too.
nl, nl_o, sp_o, tab_o = "\n", "\n", " ", "\t"
if PYTHON3 and isinstance(text, bytes):
nl = B(nl) # can only find bytes in python3 bytestrings
nl_o = ord(nl_o) # + an item of a bytestring is the ordinal value
sp_o = ord(sp_o)
tab_o = ord(tab_o)
b = []
p = 0
if wrap == 'clip':
# no wrapping to calculate, so it's easy.
l = []
while p <= len(text):
n_cr = find_newline(text, p)
if p != n_cr:
line = text[p:n_cr]
pt = 0
while pt < len(line):
n_tab = line.find(tab_o, pt)
if n_tab == -1:
end = len(line)
else:
end = n_tab
sc = calc_width(line, pt, end)
if sc != 0:
l.append((sc, p + pt, p + end))
if end == n_tab: # A tab was found
extra_space = (self.tab_width - (
sc % self.tab_width))
l.append((extra_space, p + n_tab))
pt = end + 1
l.append((0, n_cr))
b.append(l)
l = []
if text[n_cr:n_cr+2] in TWOCHAR_NEWLINES:
# Two char newline:
p = n_cr + 2
else:
p = n_cr + 1
return b
while p <= len(text):
# look for next eligible line break
n_cr = find_newline(text, p)
line = text[p:n_cr]
l = []
pt = 0
lc = 0
while pt < len(line):
n_tab = line.find(tab_o, pt)
if n_tab == -1:
end = len(line)
else:
end = n_tab
sc = calc_width(line, pt, end)
if lc + sc <= width:
# this segment fits
if sc:
l.append((sc, p + pt, p + end))
if end == n_tab: # A tab was found
extra_space = self.tab_width - (sc % self.tab_width)
l.append((extra_space, p + n_tab))
lc += extra_space
else:
# removed character hint
l.append((0, p + end))
pt = end + 1
lc += sc
if lc >= width:
# The tab can sometimes push line length to width, and
# then we adjust the line length and make a new line.
overshoot = lc - width
spaces, pos = l[-1]
l[-1] = (spaces - overshoot, pos)
b.append(l)
l = []
lc = 0
continue
# This segment does not fit. Let's fit it.
pos, sc = calc_text_pos(line, pt, end, width - lc)
if pos == pt: # pathological width=1 double-byte case
raise CanNotDisplayText(
"Wide character will not fit in 1-column width")
if wrap == 'any':
l.append((sc, p + pt, p + pos))
l.append((0, p + pos))
b.append(l)
l = []
lc = 0
pt = pos
continue
assert wrap == 'space'
if line[pos] == sp_o:
# perfect space wrap
l.append((sc, p + pt, p + pos))
# removed character hint
l.append((0, p + pos))
b.append(l)
l = []
lc = 0
pt = pos + 1
continue
if is_wide_char(line, pos):
# perfect next wide
l.append((sc, p + pt, p + pos))
b.append(l)
l = []
lc = 0
pt = pos
continue
prev = pos
while prev > pt:
prev = move_prev_char(line, pt, prev)
if line[prev] == sp_o:
sc = calc_width(line, pt, prev)
if prev != pt:
l.append((sc, p + pt, p + prev))
l.append((0, p + prev))
b.append(l)
l = []
lc = 0
pt = prev + 1
break
if is_wide_char(line, prev):
# wrap after wide char
nextc = move_next_char(line, prev, pos)
sc = calc_width(line, pt, nextc)
l.append((sc, p + pt, p + nextc))
b.append(l)
l = []
lc = 0
pt = nextc
break
else:
if lc == 0:
# unwrap previous line space if possible to
# fit more text (we're breaking a word anyway)
if b and (len(b[-1]) == 2 or (len(b[-1]) == 1 and
len(b[-1][0]) == 2)):
# look for removed space above
if len(b[-1]) == 1:
[(h_sc, h_off)] = b[-1]
p_sc = 0
p_off = p_end = h_off
else:
[(p_sc, p_off, p_end),
(h_sc, h_off)] = b[-1][-2:]
if (p_sc < width and h_sc == 0 and
text[h_off] == sp_o):
# combine with previous line
old_line = b[-1][:-2]
del b[-1]
pt = p_off - p
pos, sc = calc_text_pos(
line, pt, end, width)
old_line.append((sc, p + pt, p + pos))
b.append(old_line)
# check for trailing " " or "\n"
pt = pos
if pt < len(text) and (
text[pt] in (sp_o, nl_o)):
# removed character hint
b[-1].append((0, p + pt))
pt += 1
continue
# Break on previous tab, and try again.
if l:
b.append(l)
l = []
lc = 0
continue
# There is no space to break the line on, unwrapping the
# previous line doesn't help, I guess we just break on a
# character.
b.append([(sc, p + pt, p + pos)])
l = []
lc = 0
pt = pos
# force any char wrap
if l:
b.append(l)
elif not line:
# An empty line.
b.append([(0, n_cr)])
pt = 1
if text[pt-1:pt+1] in TWOCHAR_NEWLINES:
# Two char newline:
pt += 1
p += pt
return b
def keypress(self, size, key):
if self.mode == 'n':
p = self.edit_pos
if key.isdigit():
self.count += key
self.draw_statusbar(size)
elif key == 'esc':
self.reset_command()
self.draw_statusbar(size)
elif key == 'i':
self.set_mode('i', size)
elif key == 'h':
if p == 0:
return
p = move_prev_char(self.edit_text, 0, p)
self.set_edit_pos(p)
elif key == 'j':
x, y = self.get_cursor_coords(size)
pref_col = self.get_pref_col(size)
assert pref_col is not None
if not self.move_cursor_to_coords(size, pref_col, y + 1):
return
elif key == 'k':
x, y = self.get_cursor_coords(size)
pref_col = self.get_pref_col(size)
assert pref_col is not None
if not self.move_cursor_to_coords(size, pref_col, y - 1):
return
elif key == 'l':
if p >= len(self.edit_text):
return
p = move_next_char(self.edit_text, p, len(self.edit_text))
self.set_edit_pos(p)
elif key == ':':
self.command_start(':')
elif key == '/':
self.command_start('/')
else:
if key in self.path:
self.path = self.path[key]
if callable(self.path):
if self.path.command_or_motion == 'motion':
self.do_command(self.path, size)
if self.future_command:
self.do_command(self.future_command, size)
else:
self.master.document.move_caret()
self.move_cursor_to_coords(size, self.master.document.caret.offset, self.master.document.caret.par)
self.reset_command()
elif self.path.immediate:
self.do_command(self.path, size)
self.reset_command()
else:
self.future_command = self.path
self.reset_command_path()
self.draw_statusbar(size)
else:
self.reset_command()
elif self.mode == 'i':
if key == 'esc':
self.set_mode('n', size)
elif key == 'meta enter':
self.insert_text('\n')
elif key == 'enter':
self.insert_text('\n\n')
else:
super(Editor, self).keypress(size, key)
def calculate_text_segments(self, text, width, wrap):
"""
Calculate the segments of text to display given width screen
columns to display them.
text - unicode text or byte string to display
width - number of available screen columns
wrap - wrapping mode used
Returns a layout structure without aligmnent applied.
"""
nl, nl_o, sp_o = "\n", "\n", " "
if PYTHON3 and isinstance(text, bytes):
nl = B(nl) # can only find bytes in python3 bytestrings
nl_o = ord(nl_o) # + an item of a bytestring is the ordinal value
sp_o = ord(sp_o)
b = []
p = 0
if wrap == 'clip':
# no wrapping to calculate, so it's easy.
while p <= len(text):
n_cr = text.find(nl, p)
if n_cr == -1:
n_cr = len(text)
sc = calc_width(text, p, n_cr)
l = [(0, n_cr)]
if p != n_cr:
l = [(sc, p, n_cr)] + l
b.append(l)
p = n_cr + 1
return b
while p <= len(text):
# look for next eligible line break
n_cr = text.find(nl, p)
if n_cr == -1:
n_cr = len(text)
sc = calc_width(text, p, n_cr)
if sc == 0:
# removed character hint
b.append([(0, n_cr)])
p = n_cr + 1
continue
if sc <= width:
# this segment fits
b.append([
(sc, p, n_cr),
# removed character hint
(0, n_cr)
])
p = n_cr + 1
continue
pos, sc = calc_text_pos(text, p, n_cr, width)
if pos == p: # pathological width=1 double-byte case
raise CanNotDisplayText(
"Wide character will not fit in 1-column width")
if wrap == 'any':
b.append([(sc, p, pos)])
p = pos
continue
assert wrap == 'space'
if text[pos] == sp_o:
# perfect space wrap
b.append([
(sc, p, pos),
# removed character hint
(0, pos)
])
p = pos + 1
continue
if is_wide_char(text, pos):
# perfect next wide
b.append([(sc, p, pos)])
p = pos
continue
prev = pos
while prev > p:
prev = move_prev_char(text, p, prev)
if text[prev] == sp_o:
sc = calc_width(text, p, prev)
l = [(0, prev)]
if p != prev:
l = [(sc, p, prev)] + l
b.append(l)
p = prev + 1
break
if is_wide_char(text, prev):
# wrap after wide char
next = move_next_char(text, prev, pos)
sc = calc_width(text, p, next)
b.append([(sc, p, next)])
p = next
break
else:
# unwrap previous line space if possible to
# fit more text (we're breaking a word anyway)
if b and (len(b[-1]) == 2 or
(len(b[-1]) == 1 and len(b[-1][0]) == 2)):
# look for removed space above
if len(b[-1]) == 1:
[(h_sc, h_off)] = b[-1]
p_sc = 0
p_off = p_end = h_off
else:
[(p_sc, p_off, p_end), (h_sc, h_off)] = b[-1]
if (p_sc < width and h_sc == 0 and text[h_off] == sp_o):
# combine with previous line
del b[-1]
p = p_off
pos, sc = calc_text_pos(text, p, n_cr, width)
b.append([(sc, p, pos)])
# check for trailing " " or "\n"
p = pos
if p < len(text) and (text[p] in (sp_o, nl_o)):
# removed character hint
b[-1].append((0, p))
p += 1
continue
# force any char wrap
b.append([(sc, p, pos)])
p = pos
return b
def cmd_move_left(self, pressed=CURSOR_LEFT): if self.p==0: return pressed p = move_prev_char(self.edit_text,0,self.p) self.set_edit_pos(p)
def keypress(self, size, key):
"""
Handle editing keystrokes, return others.
>>> e, size = Edit(), (20,)
>>> e.keypress(size, 'x')
>>> e.keypress(size, 'left')
>>> e.keypress(size, '1')
>>> print e.edit_text
1x
>>> e.keypress(size, 'backspace')
>>> e.keypress(size, 'end')
>>> e.keypress(size, '2')
>>> print e.edit_text
x2
>>> e.keypress(size, 'shift f1')
'shift f1'
"""
(maxcol,) = size
p = self.edit_pos
if self.valid_char(key):
self.insert_text( key )
elif key=="tab" and self.allow_tab:
key = " "*(8-(self.edit_pos%8))
self.insert_text( key )
elif key=="enter" and self.multiline:
key = "\n"
self.insert_text( key )
elif command_map[key] == 'cursor left':
if p==0: return key
p = move_prev_char(self.edit_text,0,p)
self.set_edit_pos(p)
elif command_map[key] == 'cursor right':
if p >= len(self.edit_text): return key
p = move_next_char(self.edit_text,p,len(self.edit_text))
self.set_edit_pos(p)
elif command_map[key] in ('cursor up', 'cursor down'):
self.highlight = None
x,y = self.get_cursor_coords((maxcol,))
pref_col = self.get_pref_col((maxcol,))
assert pref_col is not None
#if pref_col is None:
# pref_col = x
if command_map[key] == 'cursor up': y -= 1
else: y += 1
if not self.move_cursor_to_coords((maxcol,),pref_col,y):
return key
elif key=="backspace":
self.pref_col_maxcol = None, None
if not self._delete_highlighted():
if p == 0: return key
p = move_prev_char(self.edit_text,0,p)
self.set_edit_text( self.edit_text[:p] +
self.edit_text[self.edit_pos:] )
self.set_edit_pos( p )
elif key=="delete":
self.pref_col_maxcol = None, None
if not self._delete_highlighted():
if p >= len(self.edit_text):
return key
p = move_next_char(self.edit_text,p,len(self.edit_text))
self.set_edit_text( self.edit_text[:self.edit_pos] +
self.edit_text[p:] )
elif command_map[key] in ('cursor max left', 'cursor max right'):
self.highlight = None
self.pref_col_maxcol = None, None
x,y = self.get_cursor_coords((maxcol,))
if command_map[key] == 'cursor max left':
self.move_cursor_to_coords((maxcol,), LEFT, y)
else:
self.move_cursor_to_coords((maxcol,), RIGHT, y)
return
else:
# key wasn't handled
return key
def keypress(self, size, key):
"""
Handle editing keystrokes, return others.
>>> e, size = Edit(), (20,)
>>> e.keypress(size, 'x')
>>> e.keypress(size, 'left')
>>> e.keypress(size, '1')
>>> print e.edit_text
1x
>>> e.keypress(size, 'backspace')
>>> e.keypress(size, 'end')
>>> e.keypress(size, '2')
>>> print e.edit_text
x2
>>> e.keypress(size, 'shift f1')
'shift f1'
"""
(maxcol, ) = size
p = self.edit_pos
if self.valid_char(key):
self.insert_text(key)
elif key == "tab" and self.allow_tab:
key = " " * (8 - (self.edit_pos % 8))
self.insert_text(key)
elif key == "enter" and self.multiline:
key = "\n"
self.insert_text(key)
elif self._command_map[key] == 'cursor left':
if p == 0: return key
p = move_prev_char(self.edit_text, 0, p)
self.set_edit_pos(p)
elif self._command_map[key] == 'cursor right':
if p >= len(self.edit_text): return key
p = move_next_char(self.edit_text, p, len(self.edit_text))
self.set_edit_pos(p)
elif self._command_map[key] in ('cursor up', 'cursor down'):
self.highlight = None
x, y = self.get_cursor_coords((maxcol, ))
pref_col = self.get_pref_col((maxcol, ))
assert pref_col is not None
#if pref_col is None:
# pref_col = x
if self._command_map[key] == 'cursor up': y -= 1
else: y += 1
if not self.move_cursor_to_coords((maxcol, ), pref_col, y):
return key
elif key == "backspace":
self.pref_col_maxcol = None, None
if not self._delete_highlighted():
if p == 0: return key
p = move_prev_char(self.edit_text, 0, p)
self.set_edit_text(self.edit_text[:p] +
self.edit_text[self.edit_pos:])
self.set_edit_pos(p)
elif key == "delete":
self.pref_col_maxcol = None, None
if not self._delete_highlighted():
if p >= len(self.edit_text):
return key
p = move_next_char(self.edit_text, p, len(self.edit_text))
self.set_edit_text(self.edit_text[:self.edit_pos] +
self.edit_text[p:])
elif self._command_map[key] in ('cursor max left', 'cursor max right'):
self.highlight = None
self.pref_col_maxcol = None, None
x, y = self.get_cursor_coords((maxcol, ))
if self._command_map[key] == 'cursor max left':
self.move_cursor_to_coords((maxcol, ), LEFT, y)
else:
self.move_cursor_to_coords((maxcol, ), RIGHT, y)
return
else:
# key wasn't handled
return key
def keypress(self, size, key):
"""
Handle editing keystrokes, return others.
>>> e, size = Edit(), (20,)
>>> e.keypress(size, 'x')
>>> e.keypress(size, 'left')
>>> e.keypress(size, '1')
>>> print e.edit_text
1x
>>> e.keypress(size, 'backspace')
>>> e.keypress(size, 'end')
>>> e.keypress(size, '2')
>>> print e.edit_text
x2
>>> e.keypress(size, 'shift f1')
'shift f1'
"""
(maxcol,) = size
p = self.edit_pos
if self.valid_char(key):
if (isinstance(key, unicode) and not
isinstance(self._caption, unicode)):
# screen is sending us unicode input, must be using utf-8
# encoding because that's all we support, so convert it
# to bytes to match our caption's type
key = key.encode('utf-8')
self.insert_text(key)
elif key=="tab" and self.allow_tab:
key = " "*(8-(self.edit_pos%8))
self.insert_text(key)
elif key=="enter" and self.multiline:
key = "\n"
self.insert_text(key)
elif self._command_map[key] == 'cursor left':
if p==0: return key
p = move_prev_char(self.edit_text,0,p)
self.set_edit_pos(p)
elif self._command_map[key] == 'cursor right':
if p >= len(self.edit_text): return key
p = move_next_char(self.edit_text,p,len(self.edit_text))
self.set_edit_pos(p)
elif self._command_map[key] in ('cursor up', 'cursor down'):
self.highlight = None
x,y = self.get_cursor_coords((maxcol,))
pref_col = self.get_pref_col((maxcol,))
assert pref_col is not None
#if pref_col is None:
# pref_col = x
if self._command_map[key] == 'cursor up': y -= 1
else: y += 1
if not self.move_cursor_to_coords((maxcol,),pref_col,y):
return key
elif key=="backspace":
self.pref_col_maxcol = None, None
if not self._delete_highlighted():
if p == 0: return key
p = move_prev_char(self.edit_text,0,p)
self.set_edit_text( self.edit_text[:p] +
self.edit_text[self.edit_pos:] )
self.set_edit_pos( p )
elif key=="delete":
self.pref_col_maxcol = None, None
if not self._delete_highlighted():
if p >= len(self.edit_text):
return key
p = move_next_char(self.edit_text,p,len(self.edit_text))
self.set_edit_text( self.edit_text[:self.edit_pos] +
self.edit_text[p:] )
elif self._command_map[key] in ('cursor max left', 'cursor max right'):
self.highlight = None
self.pref_col_maxcol = None, None
x,y = self.get_cursor_coords((maxcol,))
if self._command_map[key] == 'cursor max left':
self.move_cursor_to_coords((maxcol,), LEFT, y)
else:
self.move_cursor_to_coords((maxcol,), RIGHT, y)
return
else:
# key wasn't handled
return key
def keypress(self, size, key):
(maxcol, maxrow) = size
focus_widget, pos = self.body.get_focus()
# This is copied. I don't understand what it does.
# I will test to remove it, but later.
def actual_key(unhandled):
if unhandled:
return key
if self.set_focus_pending or self.set_focus_valign_pending:
self._set_focus_complete((maxcol, maxrow), focus=True)
if self._valid_char(key):
self._insert_char(key, focus_widget, pos)
return
if key == "tab":
# Tab is magical and maps to different commands in different
# situations. So far we insert a tab, though.
self._insert_char('\t', focus_widget, pos)
return
if key == "enter":
# We don't want to be able to remap enter, so we handle it here,
# shortcutting it's command mapping.
self.body.split_focus('\n')
return
command = self._command_map[key]
# pass off the heavy lifting
if command == urwid.CURSOR_UP:
return actual_key(self._keypress_up((maxcol, maxrow)))
if command == urwid.CURSOR_DOWN:
return actual_key(self._keypress_down((maxcol, maxrow)))
if command == urwid.CURSOR_PAGE_UP:
return actual_key(self._keypress_page_up((maxcol, maxrow)))
if command == urwid.CURSOR_PAGE_DOWN:
return actual_key(self._keypress_page_down((maxcol, maxrow)))
if command == urwid.CURSOR_MAX_LEFT:
focus_widget.set_edit_pos(0)
return
if command == urwid.CURSOR_MAX_RIGHT:
focus_widget.set_edit_pos(focus_widget.get_edit_len())
return
if command == urwid.CURSOR_LEFT:
col = focus_widget.edit_pos
if col != 0:
col = move_prev_char(focus_widget.edit_text, 0, col)
focus_widget.set_edit_pos(col)
return
# Start of line, move to previous line, if any:
if self.focus_position == 0:
# No previous line
return key
focus_widget, pos = self.body.get_prev(pos)
self.set_focus(pos, 'below')
self.keypress(size, "end")
return
if command == urwid.CURSOR_RIGHT:
col = focus_widget.edit_pos
l = focus_widget.get_edit_len()
if col < l:
col = move_next_char(focus_widget.edit_text, col,
len(focus_widget.edit_text))
focus_widget.set_edit_pos(col)
return
# We are moving beyond the end of line, go to next line.
focus_widget, pos = self.body.get_next(pos)
if not focus_widget:
# No more lines
return key
self.set_focus(pos, 'above')
self.keypress(size, "home")
return
if command == ERASE_LEFT:
col = focus_widget.edit_pos
if col == 0:
if pos == 0:
# Nothing to delete
return key
# Merge the lines
self.body.combine_focus_with_prev()
return
self.body.code.delete_text(pos, col-1, pos, col)
focus_widget.set_edit_text(self.body.code[pos])
focus_widget.set_edit_pos(col-1)
return
if command == ERASE_RIGHT:
col = focus_widget.edit_pos
if col == focus_widget.get_edit_len():
# End of line
nextline, ignore = self.body.get_next(pos)
if nextline is None:
# Nothing to delete
return key
# Merge the lines
self.body.combine_focus_with_next()
return
self.body.code.delete_text(pos, col, pos, col + 1)
focus_widget.set_edit_text(self.body.code[pos])
return
return key
