520 lines
17 KiB
Python
520 lines
17 KiB
Python
import os.path, string
|
|
import regex
|
|
from point2 import Point
|
|
|
|
WORD_LETTERS = list(string.letters + string.digits)
|
|
|
|
# note about the cursor: the cursor position will insert in front of the
|
|
# character it highlights. to this end, it needs to be able to highlight behind
|
|
# the last character on a line. thus, the x coordinate of the (logical) cursor
|
|
# can equal the length of lines[y], even though lines[y][x] throws an index
|
|
# error. both buffer and window need to be aware of this possibility for points.
|
|
|
|
class Window(object):
|
|
def __init__(self, b, a, height=24, width=80, mode_name=None):
|
|
self.buffer = b
|
|
self.application = a
|
|
|
|
self.first = Point(0, 0)
|
|
self.last = None
|
|
self.cursor = Point(0, 0)
|
|
self.mark = None
|
|
self.active_point = None
|
|
|
|
self.height = height
|
|
self.width = width
|
|
|
|
self.input_line = ""
|
|
|
|
if mode_name is not None:
|
|
pass
|
|
elif hasattr(self.buffer, 'modename') and self.buffer.modename is not None:
|
|
mode_name = self.buffer.modename
|
|
elif self.buffer.name() == "*Minibuffer*":
|
|
mode_name = 'mini'
|
|
elif self.buffer.name() == "*Console*":
|
|
mode_name = "fundamental"
|
|
elif hasattr(self.buffer, 'path'):
|
|
path = self.buffer.path
|
|
basename = os.path.basename(path)
|
|
ext = self._get_path_ext(path)
|
|
|
|
if path in self.application.mode_paths:
|
|
mode_name = self.application.mode_paths[path]
|
|
elif basename in self.application.mode_basenames:
|
|
mode_name = self.application.mode_basenames[basename]
|
|
elif ext in self.application.mode_extensions:
|
|
mode_name = self.application.mode_extensions[ext]
|
|
elif len(self.buffer.lines) > 0 and \
|
|
self.buffer.lines[0].startswith('#!'):
|
|
line = self.buffer.lines[0]
|
|
for word in self.application.mode_detection:
|
|
if word in line:
|
|
mode_name = self.application.mode_detection[word]
|
|
|
|
if mode_name is None:
|
|
mode_name = "fundamental"
|
|
|
|
m = self.application.modes[mode_name](self)
|
|
self.set_mode(m)
|
|
self.buffer.add_window(self)
|
|
|
|
# private method used in window constructor
|
|
def _get_path_ext(self, path):
|
|
name = os.path.basename(path).lower()
|
|
tokens = name.split('.')
|
|
if len(tokens) > 2 and tokens[-1] in ('gz', 'in', 'zip'):
|
|
return '.%s.%s' % (tokens[-2], tokens[-1])
|
|
else:
|
|
return os.path.splitext(path)[1].lower()
|
|
|
|
# mode stuff
|
|
def set_mode(self, m):
|
|
self.mode = m
|
|
#self.redraw()
|
|
def get_highlighter(self):
|
|
if self.mode.lexer is None:
|
|
return None
|
|
else:
|
|
return self.buffer.highlights[self.mode.name()]
|
|
|
|
# this is used to temporarily draw the user's attention to another point
|
|
def set_active_point(self, p, msg='marking on line %(y)d, character %(x)d'):
|
|
self.active_point = p
|
|
if not self.point_is_visible(p):
|
|
self.application.set_error(msg % {'x': p.x, 'y': p.y})
|
|
|
|
# point left
|
|
def point_left(self, p):
|
|
if p.y == 0 and p.x == 0:
|
|
return None
|
|
elif p.x == 0:
|
|
return Point(len(self.buffer.lines[p.y - 1]), p.y - 1)
|
|
else:
|
|
return Point(p.x - 1, p.y)
|
|
|
|
# point right
|
|
def point_right(self, p):
|
|
if p.y == len(self.buffer.lines)-1 and p.x == len(self.buffer.lines[-1]):
|
|
return None
|
|
elif p.x == len(self.buffer.lines[p.y]):
|
|
return Point(0, p.y + 1)
|
|
else:
|
|
return Point(p.x + 1, p.y)
|
|
|
|
# cursors
|
|
def logical_cursor(self):
|
|
if len(self.buffer.lines) > self.cursor.y:
|
|
l = len(self.buffer.lines[self.cursor.y])
|
|
else:
|
|
l = 0
|
|
x = min(self.cursor.x, l)
|
|
return Point(x, self.cursor.y)
|
|
|
|
# last visible point
|
|
def _calc_last(self):
|
|
(x, y) = self.first.xy()
|
|
count = 0
|
|
while count < self.height - 1 and y < len(self.buffer.lines):
|
|
line = self.buffer.lines[y]
|
|
if x >= len(line) or len(line[x:]) <= self.width:
|
|
x = 0
|
|
y += 1
|
|
count += 1
|
|
else:
|
|
count += 1
|
|
x += self.width
|
|
|
|
if y < len(self.buffer.lines):
|
|
x = min(x + self.width, len(self.buffer.lines[y]))
|
|
self.last = Point(x, y)
|
|
|
|
# redrawing
|
|
def redraw(self):
|
|
self._calc_last()
|
|
|
|
def set_size(self, width, height):
|
|
assert type(width) == type(0), width
|
|
assert type(height) == type(0), height
|
|
self.width = width
|
|
self.height = height
|
|
self.redraw()
|
|
|
|
# region added
|
|
def region_added(self, p, newlines):
|
|
(x, y) = self.logical_cursor().xy()
|
|
l = len(newlines)
|
|
assert l > 0, repr(newlines)
|
|
if l > 1:
|
|
if y > p.y:
|
|
self.cursor = Point(x, y + l - 1)
|
|
elif y == p.y and x >= p.x:
|
|
self.cursor = Point(len(newlines[-1]) + x - p.x, y + l - 1)
|
|
elif y == p.y and x >= p.x:
|
|
self.cursor = Point(x + len(newlines[0]), y)
|
|
self.mode.region_added(p, newlines)
|
|
self.assure_visible_cursor()
|
|
|
|
# region removed
|
|
def region_removed(self, p1, p2):
|
|
cursor = self.logical_cursor()
|
|
(x, y) = cursor.xy()
|
|
if cursor < p1:
|
|
pass
|
|
elif cursor < p2:
|
|
self.cursor = p1
|
|
elif cursor.y == p2.y:
|
|
self.cursor = Point(self.cursor.x - p2.x + p1.x, p1.y)
|
|
else:
|
|
self.cursor = Point(self.cursor.x, self.cursor.y - p2.y + p1.y)
|
|
self.mode.region_removed(p1, p2)
|
|
self.assure_visible_cursor()
|
|
|
|
def point_is_visible(self, p):
|
|
return self.first <= p and p <= self.last
|
|
def cursor_is_visible(self):
|
|
return self.point_is_visible(self.logical_cursor())
|
|
def first_is_visible(self):
|
|
return self.point_is_visible(self.buffer.get_buffer_start())
|
|
def last_is_visible(self):
|
|
return self.point_is_visible(self.buffer.get_buffer_end())
|
|
|
|
def center_view(self):
|
|
(x, y) = self.logical_cursor().xy()
|
|
counter = 0
|
|
while counter < self.height / 2:
|
|
if x > self.width:
|
|
x -= self.width
|
|
elif y > 0:
|
|
y -= 1
|
|
x = len(self.buffer.lines[y])
|
|
else:
|
|
(x, y) = (0, 0)
|
|
break
|
|
counter += 1
|
|
self.first = Point(x - (x % self.width), y)
|
|
self.redraw()
|
|
def assure_visible_cursor(self):
|
|
if not self.cursor_is_visible():
|
|
self.center_view()
|
|
|
|
# moving in buffer
|
|
def forward(self):
|
|
cursor = self.logical_cursor()
|
|
if cursor.x < len(self.buffer.lines[cursor.y]):
|
|
self.cursor = Point(cursor.x + 1, cursor.y)
|
|
elif cursor.y < len(self.buffer.lines) -1:
|
|
self.cursor = Point(0, cursor.y + 1)
|
|
self.assure_visible_cursor()
|
|
def backward(self):
|
|
cursor = self.logical_cursor()
|
|
if cursor.x > 0:
|
|
self.cursor = Point(cursor.x - 1, cursor.y)
|
|
elif cursor.y > 0:
|
|
self.cursor = Point(len(self.buffer.lines[cursor.y - 1]), cursor.y - 1)
|
|
self.assure_visible_cursor()
|
|
def end_of_line(self):
|
|
cursor = self.logical_cursor()
|
|
self.cursor = Point(len(self.buffer.lines[cursor.y]), cursor.y)
|
|
self.assure_visible_cursor()
|
|
def start_of_line(self):
|
|
cursor = self.logical_cursor()
|
|
self.cursor = Point(0, cursor.y)
|
|
self.assure_visible_cursor()
|
|
def previous_line(self):
|
|
cursor = self.logical_cursor()
|
|
if cursor.y > 0:
|
|
self.cursor = Point(cursor.x, cursor.y - 1)
|
|
self.assure_visible_cursor()
|
|
def next_line(self):
|
|
cursor = self.logical_cursor()
|
|
if cursor.y < len(self.buffer.lines) - 1:
|
|
self.cursor = Point(cursor.x, cursor.y + 1)
|
|
self.assure_visible_cursor()
|
|
|
|
# word handling
|
|
def find_left_word(self, p=None):
|
|
if p is None:
|
|
(x, y) = self.logical_cursor().xy()
|
|
else:
|
|
(x, y) = p.xy()
|
|
|
|
start = self.buffer.get_buffer_start()
|
|
if (x, y) == start:
|
|
return
|
|
elif x == 0:
|
|
y -= 1
|
|
x = len(self.buffer.lines[y])
|
|
else:
|
|
x -= 1
|
|
while (y, x) >= start and self.xy_char(x, y) not in WORD_LETTERS:
|
|
if x == 0:
|
|
y -= 1
|
|
x = len(self.buffer.lines[y])
|
|
else:
|
|
x -= 1
|
|
found_word = False
|
|
while (y, x) >= start and self.xy_char(x, y) in WORD_LETTERS:
|
|
found_word = True
|
|
if x == 0:
|
|
y -= 1
|
|
x = len(self.buffer.lines[y])
|
|
else:
|
|
x -= 1
|
|
if not found_word:
|
|
return None
|
|
elif x == len(self.buffer.lines[y]):
|
|
x = 0
|
|
y += 1
|
|
else:
|
|
x += 1
|
|
return Point(x, y)
|
|
def find_right_word(self, p=None):
|
|
if p is None:
|
|
(x, y) = self.logical_cursor().xy()
|
|
else:
|
|
(x, y) = p.xy()
|
|
end = self.buffer.get_buffer_end()
|
|
while (y, x) < end and self.xy_char(x, y) not in WORD_LETTERS:
|
|
if x == len(self.buffer.lines[y]):
|
|
x = 0
|
|
y += 1
|
|
else:
|
|
x += 1
|
|
while (y, x) < end and self.xy_char(x, y) in WORD_LETTERS:
|
|
if x == len(self.buffer.lines[y]):
|
|
x = 0
|
|
y += 1
|
|
else:
|
|
x += 1
|
|
return Point(x, y)
|
|
def left_word(self):
|
|
p = self.find_left_word()
|
|
if p is not None:
|
|
self.goto(p)
|
|
def right_word(self):
|
|
p = self.find_right_word()
|
|
if p is not None:
|
|
self.goto(p)
|
|
def get_word_bounds_at_point(self, p):
|
|
if len(self.buffer.lines[p.y]) == 0:
|
|
return
|
|
elif p.x == 0:
|
|
p1 = self.find_left_word(Point(p.x + 1, p.y))
|
|
p2 = self.find_right_word()
|
|
else:
|
|
p1 = self.find_left_word()
|
|
p2 = self.find_right_word(Point(p.x - 1, p.y))
|
|
return (p1, p2)
|
|
def get_word_at_point(self, p):
|
|
bounds = self.get_word_bounds_at_point(p)
|
|
if bounds is None:
|
|
return None
|
|
else:
|
|
return self.buffer.get_substring(bounds[0], bounds[1])
|
|
def get_word_bounds(self):
|
|
return self.get_word_bounds_at_point(self.logical_cursor())
|
|
def get_word(self):
|
|
return self.get_word_at_point(self.logical_cursor())
|
|
|
|
# page up/down
|
|
def _pshift_up(self, p, num):
|
|
(x, y) = p.xy()
|
|
orig_x = x
|
|
counter = 0
|
|
while counter < num and y > 0:
|
|
if x > self.width:
|
|
x -= self.width
|
|
else:
|
|
y -= 1
|
|
x = len(self.buffer.lines[y])
|
|
counter += 1
|
|
return Point(orig_x, y)
|
|
def _pshift_down(self, p, num):
|
|
(x, y) = p.xy()
|
|
orig_x = x
|
|
counter = 0
|
|
while counter < num and y < len(self.buffer.lines):
|
|
if x + self.width >= len(self.buffer.lines[y]):
|
|
y += 1
|
|
x = 0
|
|
else:
|
|
x += self.width
|
|
counter += 1
|
|
return Point(orig_x, y)
|
|
def page_up(self):
|
|
first_point = self.buffer.get_buffer_start()
|
|
if self.point_is_visible(first_point):
|
|
self.goto_beginning()
|
|
return
|
|
self.cursor = self._pshift_up(self.cursor, self.height - 3)
|
|
if self.first > first_point:
|
|
self.first = self._pshift_up(self.first, self.height - 3)
|
|
self.redraw()
|
|
def page_down(self):
|
|
last_point = self.buffer.get_buffer_end()
|
|
if self.point_is_visible(last_point):
|
|
self.goto_end()
|
|
return
|
|
self.cursor = self._pshift_down(self.cursor, self.height - 3)
|
|
if self.last < last_point:
|
|
self.first = self._pshift_down(self.first, self.height - 3)
|
|
self.redraw()
|
|
|
|
# jumping in buffer
|
|
def goto(self, p):
|
|
self.cursor = p
|
|
self.assure_visible_cursor()
|
|
def goto_line(self, n):
|
|
assert n > 0 and n <= len(self.buffer.lines) , "illegal line: %d" % n
|
|
self.cursor = Point(0, n - 1)
|
|
self.assure_visible_cursor()
|
|
def forward_lines(self, n):
|
|
assert n > 0, "illegal number of lines: %d" % n
|
|
y = min(self.logical_cursor().y + n, len(self.buffer.lines) - 1)
|
|
self.goto(Point(0, y))
|
|
def forward_chars(self, n):
|
|
(x, y) = self.logical_cursor().xy()
|
|
for i in range(0, n):
|
|
if x == len(self.buffer.lines[y]):
|
|
y += 1
|
|
x = 0
|
|
if y >= len(self.buffer.lines):
|
|
break
|
|
else:
|
|
x += 1
|
|
self.goto(Point(x, y))
|
|
def goto_char(self, n):
|
|
self.goto_beginning()
|
|
self.forward_chars(n)
|
|
def goto_beginning(self):
|
|
self.cursor = Point(0, 0)
|
|
self.assure_visible_cursor()
|
|
def goto_end(self):
|
|
self.cursor = self.buffer.get_buffer_end()
|
|
self.assure_visible_cursor()
|
|
|
|
# mark manipulation
|
|
def set_mark_point(self, p):
|
|
self.mark = p
|
|
def set_mark(self):
|
|
self.set_mark_point(self.logical_cursor())
|
|
self.application.set_error("Mark set")
|
|
def goto_mark(self):
|
|
self.goto(self.mark)
|
|
def switch_mark(self):
|
|
if self.mark:
|
|
p = self.mark
|
|
self.set_mark_point(self.logical_cursor())
|
|
self.goto(p)
|
|
|
|
# deletion
|
|
def left_delete(self):
|
|
(x, y) = self.logical_cursor().xy()
|
|
if x > 0:
|
|
self.buffer.delete_char(Point(x - 1, y))
|
|
elif y > 0:
|
|
self.buffer.delete_char(Point(len(self.buffer.lines[y - 1]), y - 1))
|
|
def right_delete(self):
|
|
cursor = self.logical_cursor()
|
|
if cursor < self.last:
|
|
self.buffer.delete_char(cursor)
|
|
else:
|
|
pass
|
|
|
|
# killing
|
|
def kill_line(self):
|
|
return self.copy_line(kill=True)
|
|
def kill_region(self):
|
|
return self.copy_region(kill=True)
|
|
def kill_left_word(self):
|
|
p1 = self.find_left_word()
|
|
p2 = self.logical_cursor()
|
|
if p1 == p2:
|
|
return
|
|
return self.kill(p1, p2)
|
|
def kill_right_word(self):
|
|
p1 = self.logical_cursor()
|
|
p2 = self.find_right_word()
|
|
if p1 == p2:
|
|
return
|
|
return self.kill(p1, p2)
|
|
def copy_line(self, kill=False):
|
|
cursor = self.logical_cursor()
|
|
(x, y) = cursor.xy()
|
|
lines = self.buffer.lines
|
|
if (x < len(lines[y]) and not regex.whitespace.match(lines[y][x:])):
|
|
limit = Point(len(lines[y]), y)
|
|
elif y < len(lines) - 1:
|
|
limit = Point(0, y + 1)
|
|
else:
|
|
return
|
|
if kill:
|
|
return self.kill(cursor, limit)
|
|
else:
|
|
return self.copy(cursor, limit)
|
|
def copy_region(self, kill=False):
|
|
cursor = self.logical_cursor()
|
|
if cursor < self.mark:
|
|
p1 = cursor
|
|
p2 = self.mark
|
|
elif self.mark < cursor:
|
|
p1 = self.mark
|
|
p2 = cursor
|
|
else:
|
|
self.input_line = "Empty kill region"
|
|
return
|
|
if kill:
|
|
return self.kill(p1, p2)
|
|
else:
|
|
return self.copy(p1, p2)
|
|
def kill(self, p1, p2):
|
|
killed = self.buffer.get_substring(p1, p2)
|
|
self.buffer.delete(p1, p2)
|
|
self.application.push_kill(killed)
|
|
return killed
|
|
def copy(self, p1, p2):
|
|
copied = self.buffer.get_substring(p1, p2)
|
|
self.application.push_kill(copied)
|
|
return copied
|
|
|
|
# insertion
|
|
def insert_string_at_cursor(self, s):
|
|
self.insert_string(self.logical_cursor(), s)
|
|
def insert_string(self, p, s):
|
|
lines = s.split('\n')
|
|
self.insert_lines(p, lines)
|
|
def insert_lines_at_cursor(self, lines):
|
|
self.insert_lines(self.logical_cursor(), lines)
|
|
def insert_lines(self, p, lines):
|
|
self.buffer.insert_lines(p, lines)
|
|
self.redraw()
|
|
|
|
# yank/pop
|
|
def yank(self):
|
|
self.insert_string_at_cursor(self.application.get_kill())
|
|
def pop_kill(self):
|
|
return self.application.pop_kill()
|
|
|
|
# querying
|
|
def cursor_char(self):
|
|
self.point_char(self.logical_cursor())
|
|
def point_char(self, p):
|
|
return self.xy_char(p.x, p.y)
|
|
def xy_char(self, x, y):
|
|
#assert 0 <= y and y < len(self.buffer.lines)
|
|
#assert 0 <= x and x <= len(self.buffer.lines[y])
|
|
if x == len(self.buffer.lines[y]):
|
|
return "\n"
|
|
else:
|
|
return self.buffer.lines[y][x]
|
|
|
|
# undo/redo
|
|
# XYZ
|
|
def undo(self):
|
|
# TODO: put something here to move the cursor to the area of the undo
|
|
self.buffer.undo()
|
|
def redo(self):
|
|
# TODO: put something here to move the cursor to the area of the redo
|
|
self.buffer.redo()
|