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screencast_director.py
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screencast_director.py
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import random
import sublime
import sublime_plugin
from . import pyyaml
from functools import reduce
def parse(str, check_nl=True):
if check_nl and "\n" in str:
return "\n".join(map(lambda line: parse(line, False), str.split("\n")))
if len(str) > 1 and str[0] == '"' and str[-1] == '"':
str = eval(str)
return str
class ScreencastDirector(object):
the_director = None
def __init__(self):
self.source_view = None
self.target_view = None
self.index = 0
self.commands = [] # stores a list of commands to perform on the target_view.
self._mark_offsets = {}
def _refresh_source(self):
if self.source_view is None:
return
active_view = sublime.active_window().active_view()
regions = self.source_view.get_regions('screencast_director')
if self.index < 0:
self.index = len(regions) - 1
elif self.index >= len(regions):
self.index = 0
self.source_view.sel().clear()
self.source_view.sel().add(regions[ScreencastDirector.the_director.index])
pos = self.source_view.viewport_position()
self.source_view.show_at_center(regions[ScreencastDirector.the_director.index])
new_pos = self.source_view.viewport_position()
if abs(new_pos[0] - pos[0]) <= 1.0 and abs(new_pos[1] - pos[1]) <= 1.0:
self.source_view.set_viewport_position((new_pos[0], new_pos[1] + 1))
self.source_view.set_viewport_position((new_pos[0], new_pos[1]))
window = self.source_view.window()
if not window:
window = self.target_view.window()
if not window:
sublime.status_message('I can\'t find a `window`')
return
window.focus_view(self.source_view)
window.focus_view(active_view)
def _run(self):
regions = self.source_view.get_regions('screencast_director')
region = regions[self.index]
content = self.source_view.substr(region)
commands = pyyaml.load(content)
for entry in commands:
self._execute(entry)
if len(self.target_view.sel()):
region = self.target_view.sel()[0]
else:
region = sublime.Region(0, 0)
self.target_view.add_regions('screencast_director', [region], 'source', '', sublime.HIDDEN)
self._start_timer()
def _execute(self, entry):
"""
Parses the "entry", which could be a `dict`, a `list`, or a `string`.
A `dict` entry is the most common:
- write: "a string"
A list command has the command as the first arg:
- [write, 'a string']
and, finally, just a bare command, where `args` defaults to `[]`:
- delay
"""
if isinstance(entry, dict):
for item in entry.items():
command, args = item
break
elif isinstance(entry, list):
command, args = entry[0], entry[1:]
else:
command, args = entry, []
if not isinstance(args, list):
args = [args]
cmd = getattr(self, command)
try:
cmd(*args)
except TypeError:
if args == [{}]:
cmd()
else:
raise
except AssertionError as e:
self.view.show_popup('ScreencastDirector compile error: %s' % e.message)
raise
def _append_command(self, command, delay=None):
if delay is None:
delay = random.randint(50, 150)
self.commands.append((command, delay))
def _start_timer(self):
"""
Pops an item off the command queue and runs it. The command should
accept one argument: a cursor object, of type sublime.Region, and
it should return `None` (no changes) or a new cursor region.
The cursors are cleared and restored between each command.
"""
if self.commands:
cmd, delay = self.commands.pop(0)
cursor = self.target_view.get_regions('screencast_director')[0]
if cursor in self.target_view.sel():
self.target_view.sel().subtract(cursor)
info = {}
def what_to_do(cls, edit):
info['new_cursor'] = cmd(cursor, edit)
ScreencastDirectorCmdCommand.what_to_do = what_to_do
ScreencastDirector.the_director.target_view.run_command('screencast_director_cmd')
new_cursor = info['new_cursor']
if new_cursor is None:
new_cursor = cursor
elif isinstance(new_cursor, int):
new_cursor = sublime.Region(new_cursor, new_cursor)
elif isinstance(new_cursor, tuple):
new_cursor = sublime.Region(new_cursor[0], new_cursor[1])
self.target_view.sel().add(new_cursor)
self.target_view.add_regions('screencast_director', [new_cursor], 'source', '', sublime.HIDDEN)
sublime.set_timeout(self._start_timer, delay)
def set_syntax(self, syntax):
def _set_syntax(cursor, edit):
self.target_view.set_syntax_file(syntax)
return cursor
self._append_command(_set_syntax)
def write_parallel(self, *lines):
max_len = max([len(text) for (_, _, text) in lines])
for offset in range(0, max_len):
for (row, col, text) in lines:
if len(text) < offset:
continue
self.goto(row, col + offset)
self.write(text[offset], delay_min=20, delay_max=40)
def write_at(self, row, col, text):
self.goto(row, col)
self.write(text)
def write(self, *what_to_write, **options):
if len(what_to_write) == 1 and isinstance(what_to_write[0], dict):
return self.write(what_to_write[0]['write'], **what_to_write[0])
if options.get('write'):
what_to_write = options['write']
if isinstance(what_to_write, str):
what_to_write = [what_to_write]
delay_min = options.get('delay_min', 40)
delay_max = options.get('delay_max', 70)
def _write_letter(letter):
def _write(cursor, edit):
self.target_view.replace(edit, cursor, letter)
return cursor.begin() + len(letter)
return _write
if len(what_to_write) > 1:
def _add_newline(line):
if not isinstance(line, str):
return line
if not line or line[-1] != "\n":
return line + "\n"
return line
what_to_write = map(_add_newline, what_to_write)
for entry in what_to_write:
previous_letter = None
if isinstance(entry, str):
entry = parse(entry)
for letter in entry:
if delay_min == delay_max:
delay = delay_min
elif previous_letter == letter:
delay = delay_min
else:
delay = random.randrange(delay_min, delay_max)
self._append_command(_write_letter(letter), delay=delay)
previous_letter = letter
else:
self._execute(entry)
def write_inside(self, left, middle=None, right=None, *others):
"""
You can use this one of three ways:
- write_inside: "'The first and last character will be used'"
- write_inside: ["'", "explicitly state left and right", "'"]
- write_inside:
- \"
- write: Nest commands inside
- \"
"""
if others:
# write_inside(a, b, c, d, e)
# => left: a, middle: b, right: c, others: [d, e]
middle = [middle, right]
right = others[-1]
middle.extend(others[:-1])
# => left: a, middle: [b, c, d], right: e
elif middle is None and right is None:
left, middle, right = left[0], left[1:-1], left[-1]
assert len(left) == len(right), \
'len({left}) ({len_left}) != '\
'len({right}) ({len_right})'.format(left=left, len_left=len(left),
right=right, len_right=len(right))
def _write_letters(a, b):
def _write(cursor, edit):
self.target_view.replace(edit, cursor, a + b)
return cursor.begin() + len(a)
return _write
index = len(right)
for a in left:
index -= 1
b = right[index]
self._append_command(_write_letters(a, b))
if isinstance(middle, str):
self.write(middle)
elif isinstance(middle, list):
for entry in middle:
self._execute(entry)
else:
self._execute(middle)
for a in left:
self.go(len(a))
def insert(self, what_to_write, delay=None):
def _insert(cursor, edit):
self.target_view.replace(edit, cursor, what_to_write)
return cursor.begin() + len(what_to_write)
self._append_command(_insert, delay)
def _write_at(self, edit, row, col, text):
# support multiple lines
if "\n" in text:
lines = text.splitlines()
for i, line in enumerate(lines):
self._write_at(edit, row + i, col, line)
return
# fix number of rows
actual_row, _ = self.target_view.rowcol(self.target_view.text_point(row, 0))
nl = max(0, row - actual_row)
if nl:
point = self.target_view.text_point(actual_row, 0)
eol_point = self.target_view.line(point).end()
self.target_view.insert(edit, eol_point, "\n" * nl)
# fix column
line = self.target_view.line(self.target_view.text_point(row, 0))
spaces = max(0, col + len(text) - len(line))
if spaces:
point = line.end()
self.target_view.insert(edit, point, ' ' * spaces)
# k, we should be good to go now
point = self.target_view.text_point(row, col)
self.target_view.replace(edit, sublime.Region(point, point + len(text)), text)
return point + len(text)
def write_lines(self, *lines, **options):
if len(lines) == 1 and isinstance(lines[0], dict):
return self.write_lines(*lines[0]['lines'], **lines[0])
delay = options.get('delay', 20)
def func_maker(char, line_index, char_index):
def _write_char(cursor, edit):
row, col = self.target_view.rowcol(cursor.begin())
line_row = row + line_index
line_col = col + char_index
self._write_at(edit, line_row, line_col, char)
return cursor.begin()
return _write_char
info = {'index': 0}
longest_line_len = reduce(lambda a, b: max(a, len(b)), lines, 0)
while info['index'] < longest_line_len:
for line_index, line in enumerate(lines):
try:
char = line[info['index']]
char_index = info['index']
fn = func_maker(char, line_index, char_index)
self._append_command(fn, 0)
except IndexError:
pass
info['index'] += 1
self.delay(delay)
def nl(self, delay=None):
def _nl(cursor, edit):
self.target_view.replace(edit, cursor, "\n")
return cursor.begin() + 1
self._append_command(_nl, delay)
def delay(self, delay=100):
def _delay(cursor, edit):
return cursor
self._append_command(_delay, delay)
def go(self, where, delay=None):
def _go(cursor, edit):
cursor = cursor.begin() + where
self.target_view.sel().clear()
self.target_view.sel().add(sublime.Region(cursor, cursor))
return cursor
self._append_command(_go, delay)
def select_all(self, delay=None):
def _select_all(cursor, edit):
allofit = sublime.Region(0, self.target_view.size())
self.target_view.sel().clear()
self.target_view.sel().add(allofit)
return allofit
self._append_command(_select_all, delay)
def select_delta(self, delta, delay=None):
def _select_delta(cursor, edit):
selection = sublime.Region(cursor.begin(), cursor.end() + delta)
self.target_view.sel().clear()
self.target_view.sel().add(selection)
return selection
self._append_command(_select_delta, delay)
def select_eol(self, delay=None):
def _select_eol(cursor, edit):
selection = sublime.Region(cursor.begin(), self.target_view.line(cursor.a).end())
self.target_view.sel().clear()
self.target_view.sel().add(selection)
return selection
self._append_command(_select_eol, delay)
def select_next(self, find_next, delay=None):
def _select_delta(cursor, edit):
selection = self.target_view.find(find_next, cursor.begin(), sublime.LITERAL)
self.target_view.sel().clear()
self.target_view.sel().add(selection)
return selection
self._append_command(_select_delta, delay)
def delete(self, delay=None):
def _delete(cursor, edit):
self.target_view.replace(edit, cursor, '')
return cursor.begin()
self._append_command(_delete, delay)
def clear(self, delay=None):
self.select_all(delay)
self.delete(delay)
self.clear_marks(delay)
def select_lines(self, line_a, line_b, delay=None):
def _select_lines(cursor, edit):
last_row = self.target_view.rowcol(len(self.target_view))[0] + 1
row_a = line_a
row_b = line_b
if row_a < 0:
row_a = last_row + row_a
if row_b < 0:
row_b = last_row + row_b
point_a = self.target_view.text_point(row_a, 0)
point_b = self.target_view.text_point(row_b, 0)
# return if the lines are unreachable
if self.target_view.rowcol(point_a)[0] != line_a:
return cursor.a
start = self.target_view.full_line(point_a).begin()
stop = self.target_view.full_line(point_b).end()
selection = sublime.Region(start, stop)
self.target_view.sel().clear()
self.target_view.sel().add(selection)
return selection
self._append_command(_select_lines, delay)
def clear_lines(self, line_a, line_b, delay=None):
self.select_lines(line_a, line_b, delay)
self.delete(delay)
def insert_at(self, row, col, text):
def _insert(cursor, edit):
return self._write_at(edit, row, col, text)
self._append_command(_insert, 0)
def goto_eol(self):
def _goto_eol(cursor, edit):
cursor = sublime.Region(self.target_view.line(cursor.a).end())
self.target_view.sel().clear()
self.target_view.sel().add(cursor)
return cursor
self._append_command(_goto_eol, 0)
def goto(self, row, col):
self.insert_at(row, col, '')
def add_cursor(self, row, col):
def _add_cursor(cursor, edit):
return cursor
self.insert_at(row, col, '')
def set_mark(self, name=None, delay=None):
if not name:
name = '__tmp__'
def _set_mark(cursor, edit):
cursor_0 = self.target_view.line(cursor.begin()).a
self._mark_offsets[name] = cursor.begin() - cursor_0
if self._mark_offsets[name] == 0:
self._mark_offsets[name] = 1
cursor_0 -= 1
self.target_view.add_regions('screencast_director_%s' % name, [sublime.Region(cursor_0, cursor_0)], 'source', '', sublime.HIDDEN)
return cursor
self._append_command(_set_mark, delay)
def goto_mark(self, name=None, delay=None):
if not name:
name = '__tmp__'
def _goto_mark(cursor, edit):
cursors = self.target_view.get_regions('screencast_director_%s' % name)
return cursors[0].a + self._mark_offsets[name]
self._append_command(_goto_mark, delay)
def select_from_mark(self, name=None, delay=None):
if not self._mark_offsets:
return
if not name:
name = '__tmp__'
def _select_from_mark(cursor, edit):
cursors = self.target_view.get_regions('screencast_director_%s' % name)
a = cursors[0].a + self._mark_offsets[name]
b = cursor.b
return a, b
self._append_command(_select_from_mark, delay)
def clear_marks(self, delay=None):
def _clear_marks(cursor, edit):
for name in self._mark_offsets:
self.target_view.erase_regions('screencast_director_%s' % name)
self._mark_offsets = {}
return cursor
self._append_command(_clear_marks, delay)
def run_command(self, command, args=None):
def _run_command(cursor, edit):
self.target_view.sel().add(cursor)
if args is None:
self.target_view.run_command(command)
else:
self.target_view.run_command(command, args)
cursor = self.target_view.sel()[0]
return cursor
self._append_command(_run_command)
ScreencastDirector.the_director = ScreencastDirector()
class ScreencastDirectorBindSourceCommand(sublime_plugin.ApplicationCommand):
def run(self):
window = sublime.active_window()
source_view = ScreencastDirector.the_director.source_view = window.active_view()
if source_view is not None:
ScreencastDirector.the_director.index = 0
source_view.sel().clear()
allofit = sublime.Region(0, source_view.size())
source = source_view.substr(allofit)
search = "\n\n-"
parts = source.split(search)
blocks = []
skip = parts.pop(0)
if len(skip) and skip[0] == "-":
blocks.append(sublime.Region(0, len(skip.rstrip())))
offset = len(skip)
for part in parts:
offset += len(search) - 1
start = offset
offset += 1
end = offset + len(part.rstrip())
offset += len(part)
region = sublime.Region(start, end)
blocks.append(region)
if not blocks:
self.view.show_popup('ScreencastDirector could not parse commands.')
return
source_view.add_regions(
'screencast_director',
blocks,
'source',
'',
sublime.DRAW_OUTLINED
)
self.view.show_popup('Bound source view and set index to 0')
ScreencastDirector.the_director._refresh_source()
class ScreencastDirectorCmdCommand(sublime_plugin.TextCommand):
def run(self, edit):
self.what_to_do(edit)
class ScreencastDirectorBindTargetCommand(sublime_plugin.WindowCommand):
def run(self):
window = sublime.active_window()
ScreencastDirector.the_director.target_view = window.active_view()
self.view.show_popup('Bound target view')
ScreencastDirector.the_director._refresh_source()
class ScreencastDirectorPasteCommand(sublime_plugin.TextCommand):
def run(self, edit):
target_view = self.view
ScreencastDirector.the_director.target_view = target_view
ScreencastDirector.the_director.write(sublime.get_clipboard(),
delay_min=10,
delay_max=20,
)
region = self.view.sel()[0]
target_view.add_regions('screencast_director', [region], 'source', '', sublime.HIDDEN)
ScreencastDirector.the_director._start_timer()
class ScreencastDirectorRunCommand(sublime_plugin.TextCommand):
def run(self, edit):
window = sublime.active_window()
source_view = ScreencastDirector.the_director.source_view
target_view = ScreencastDirector.the_director.target_view
if target_view is None:
window.run_command('screencast_director_bind_target')
target_view = ScreencastDirector.the_director.target_view
if source_view is None:
self.view.show_popup('Choose your source view')
return
if target_view.id() == source_view.id():
ScreencastDirector.the_director.target_view = None
self.view.show_popup('Choose your target view')
return
ScreencastDirector.the_director.command = self
ScreencastDirector.the_director._run()
ScreencastDirector.the_director.index += 1
ScreencastDirector.the_director._refresh_source()
sublime.status_message('Index is at {index}'.format(index=ScreencastDirector.the_director.index))
class ScreencastDirectorNextCommand(sublime_plugin.ApplicationCommand):
def run(self):
if ScreencastDirector.the_director.source_view is None:
window = sublime.active_window()
window.run_command('screencast_director_bind_source')
else:
ScreencastDirector.the_director.index += 1
ScreencastDirector.the_director._refresh_source()
sublime.status_message('Index is at {index}'.format(index=ScreencastDirector.the_director.index))
class ScreencastDirectorPreviousCommand(sublime_plugin.ApplicationCommand):
def run(self):
if ScreencastDirector.the_director.source_view is None:
window = sublime.active_window()
window.run_command('screencast_director_bind_source')
else:
ScreencastDirector.the_director.index -= 1
ScreencastDirector.the_director._refresh_source()
sublime.status_message('Index is at {index}'.format(index=ScreencastDirector.the_director.index))