dotfiles/talon/community/community-cursorless-0.4.0/code/help.py
2024-11-16 20:27:38 -07:00

625 lines
19 KiB
Python

from collections import defaultdict
import itertools
import math
from typing import Dict, List, Iterable, Set, Tuple, Union
from talon import Module, Context, actions, imgui, Module, registry, ui, app
from talon.grammar import Phrase
mod = Module()
mod.list("help_contexts", desc="list of available contexts")
mod.mode("help", "mode for commands that are available only when help is visible")
setting_help_max_contexts_per_page = mod.setting(
"help_max_contexts_per_page",
type=int,
default=20,
desc="Max contexts to display per page in help",
)
setting_help_max_command_lines_per_page = mod.setting(
"help_max_command_lines_per_page",
type=int,
default=50,
desc="Max lines of command to display per page in help",
)
ctx = Context()
# context name -> commands
context_command_map = {}
# rule word -> Set[(context name, rule)]
rule_word_map: Dict[str, Set[Tuple[str, str]]] = defaultdict(set)
search_phrase = None
# context name -> actual context
context_map = {}
current_context_page = 1
sorted_context_map_keys = []
selected_context = None
selected_context_page = 1
total_page_count = 1
cached_active_contexts_list = []
live_update = True
cached_window_title = None
show_enabled_contexts_only = False
def update_title():
global live_update
global show_enabled_contexts_only
global cached_window_title
if live_update:
if gui_context_help.showing:
if selected_context == None:
refresh_context_command_map(show_enabled_contexts_only)
else:
update_active_contexts_cache(registry.active_contexts())
# todo: dynamic rect?
@imgui.open(y=0)
def gui_alphabet(gui: imgui.GUI):
global alphabet
gui.text("Alphabet help")
gui.line()
for key, val in alphabet.items():
gui.text("{}: {}".format(val, key))
gui.spacer()
if gui.button("close"):
gui_alphabet.hide()
def format_context_title(context_name: str) -> str:
global cached_active_contexts_list
return "{} [{}]".format(
context_name,
"ACTIVE"
if context_map.get(context_name, None) in cached_active_contexts_list
else "INACTIVE",
)
def format_context_button(index: int, context_label: str, context_name: str) -> str:
global cached_active_contexts_list
global show_enabled_contexts_only
if not show_enabled_contexts_only:
return "{}. {}{}".format(
index,
context_label,
"*"
if context_map.get(context_name, None) in cached_active_contexts_list
else "",
)
else:
return "{}. {} ".format(index, context_label)
# translates 1-based index -> actual index in sorted_context_map_keys
def get_context_page(index: int) -> int:
return math.ceil(index / setting_help_max_contexts_per_page.get())
def get_total_context_pages() -> int:
return math.ceil(
len(sorted_context_map_keys) / setting_help_max_contexts_per_page.get()
)
def get_current_context_page_length() -> int:
start_index = (current_context_page - 1) * setting_help_max_contexts_per_page.get()
return len(
sorted_context_map_keys[
start_index : start_index + setting_help_max_contexts_per_page.get()
]
)
def get_command_line_count(command: Tuple[str, str]) -> int:
"""This should be kept in sync with draw_commands
"""
_, body = command
lines = len(body.split("\n"))
if lines == 1:
return 1
else:
return lines + 1
def get_pages(item_line_counts: List[int]) -> List[int]:
"""Given some set of indivisible items with given line counts,
return the page number each item should appear on.
If an item will cross a page boundary, it is moved to the next page,
so that pages may be shorter than the maximum lenth, but not longer. The only
exception is when an item is longer than the maximum page length, in which
case that item will be placed on a longer page.
"""
current_page_line_count = 0
current_page = 1
pages = []
for line_count in item_line_counts:
if (
line_count + current_page_line_count
> setting_help_max_command_lines_per_page.get()
):
if current_page_line_count == 0:
# Special case, render a larger page.
page = current_page
current_page_line_count = 0
else:
page = current_page + 1
current_page_line_count = line_count
current_page += 1
else:
current_page_line_count += line_count
page = current_page
pages.append(page)
return pages
@imgui.open(y=0)
def gui_context_help(gui: imgui.GUI):
global context_command_map
global current_context_page
global selected_context
global selected_context_page
global sorted_context_map_keys
global show_enabled_contexts_only
global cached_active_contexts_list
global total_page_count
global search_phrase
# if no selected context, draw the contexts
if selected_context is None and search_phrase is None:
total_page_count = get_total_context_pages()
if not show_enabled_contexts_only:
gui.text(
"Help: All ({}/{}) (* = active)".format(
current_context_page, total_page_count
)
)
else:
gui.text(
"Help: Active Contexts Only ({}/{})".format(
current_context_page, total_page_count
)
)
gui.line()
current_item_index = 1
current_selection_index = 1
for key in sorted_context_map_keys:
if key in ctx.lists["self.help_contexts"]:
target_page = get_context_page(current_item_index)
if current_context_page == target_page:
button_name = format_context_button(
current_selection_index,
key,
ctx.lists["self.help_contexts"][key],
)
if gui.button(button_name):
selected_context = ctx.lists["self.help_contexts"][key]
current_selection_index = current_selection_index + 1
current_item_index += 1
if total_page_count > 1:
gui.spacer()
if gui.button("Next..."):
actions.user.help_next()
if gui.button("Previous..."):
actions.user.help_previous()
# if there's a selected context, draw the commands for it
else:
if selected_context is not None:
draw_context_commands(gui)
elif search_phrase is not None:
draw_search_commands(gui)
gui.spacer()
if total_page_count > 1:
if gui.button("Next..."):
actions.user.help_next()
if gui.button("Previous..."):
actions.user.help_previous()
if gui.button("Return"):
actions.user.help_return()
if gui.button("Refresh"):
actions.user.help_refresh()
if gui.button("Close"):
actions.user.help_hide()
def draw_context_commands(gui: imgui.GUI):
global selected_context
global total_page_count
global selected_context_page
context_title = format_context_title(selected_context)
title = f"Context: {context_title}"
commands = context_command_map[selected_context].items()
item_line_counts = [get_command_line_count(command) for command in commands]
pages = get_pages(item_line_counts)
total_page_count = max(pages, default=1)
draw_commands_title(gui, title)
filtered_commands = [
command
for command, page in zip(commands, pages)
if page == selected_context_page
]
draw_commands(gui, filtered_commands)
def draw_search_commands(gui: imgui.GUI):
global search_phrase
global total_page_count
global cached_active_contexts_list
global selected_context_page
title = f"Search: {search_phrase}"
commands_grouped = get_search_commands(search_phrase)
commands_flat = list(itertools.chain.from_iterable(commands_grouped.values()))
sorted_commands_grouped = sorted(
commands_grouped.items(),
key=lambda item: context_map[item[0]] not in cached_active_contexts_list,
)
pages = get_pages(
[
sum(get_command_line_count(command) for command in commands) + 3
for _, commands in sorted_commands_grouped
]
)
total_page_count = max(pages, default=1)
draw_commands_title(gui, title)
current_item_index = 1
for (context, commands), page in zip(sorted_commands_grouped, pages):
if page == selected_context_page:
gui.text(format_context_title(context))
gui.line()
draw_commands(gui, commands)
gui.spacer()
def get_search_commands(phrase: str) -> Dict[str, Tuple[str, str]]:
global rule_word_map
tokens = search_phrase.split(" ")
viable_commands = rule_word_map[tokens[0]]
for token in tokens[1:]:
viable_commands &= rule_word_map[token]
commands_grouped = defaultdict(list)
for context, rule in viable_commands:
command = context_command_map[context][rule]
commands_grouped[context].append((rule, command))
return commands_grouped
def draw_commands_title(gui: imgui.GUI, title: str):
global selected_context_page
global total_page_count
gui.text("{} ({}/{})".format(title, selected_context_page, total_page_count))
gui.line()
def draw_commands(gui: imgui.GUI, commands: Iterable[Tuple[str, str]]):
for key, val in commands:
val = val.split("\n")
if len(val) > 1:
gui.text("{}:".format(key))
for line in val:
gui.text(" {}".format(line))
else:
gui.text("{}: {}".format(key, val[0]))
def reset():
global current_context_page
global sorted_context_map_keys
global selected_context
global search_phrase
global selected_context_page
global cached_window_title
global show_enabled_contexts_only
current_context_page = 1
sorted_context_map_keys = None
selected_context = None
search_phrase = None
selected_context_page = 1
cached_window_title = None
show_enabled_contexts_only = False
def update_active_contexts_cache(active_contexts):
# print("update_active_contexts_cache")
global cached_active_contexts_list
cached_active_contexts_list = active_contexts
# example usage todo: make a list definable in .talon
# overrides = {"generic browser" : "broswer"}
overrides = {}
def refresh_context_command_map(enabled_only=False):
global rule_word_map
global context_command_map
global context_map
global sorted_context_map_keys
global show_enabled_contexts_only
global cached_window_title
global context_map
context_map = {}
cached_short_context_names = {}
show_enabled_contexts_only = enabled_only
cached_window_title = ui.active_window().title
active_contexts = registry.active_contexts()
# print(str(active_contexts))
update_active_contexts_cache(active_contexts)
context_command_map = {}
for context_name, context in registry.contexts.items():
splits = context_name.split(".")
index = -1
if "talon" in splits[index]:
index = -2
short_name = splits[index].replace("_", " ")
else:
short_name = splits[index].replace("_", " ")
if "mac" == short_name or "win" == short_name or "linux" == short_name:
index = index - 1
short_name = splits[index].replace("_", " ")
# print("short name: " + short_name)
if short_name in overrides:
short_name = overrides[short_name]
if enabled_only and context in active_contexts or not enabled_only:
context_command_map[context_name] = {}
for command_alias, val in context.commands.items():
# print(str(val))
if command_alias in registry.commands:
# print(str(val.rule.rule) + ": " + val.target.code)
context_command_map[context_name][
str(val.rule.rule)
] = val.target.code
# print(short_name)
# print("length: " + str(len(context_command_map[context_name])))
if len(context_command_map[context_name]) == 0:
context_command_map.pop(context_name)
else:
cached_short_context_names[short_name] = context_name
context_map[context_name] = context
refresh_rule_word_map(context_command_map)
ctx.lists["self.help_contexts"] = cached_short_context_names
# print(str(ctx.lists["self.help_contexts"]))
sorted_context_map_keys = sorted(cached_short_context_names)
def refresh_rule_word_map(context_command_map):
global rule_word_map
rule_word_map = defaultdict(set)
for context_name, commands in context_command_map.items():
for rule in commands:
tokens = set(token for token in rule.split(" ") if token.isalpha())
for token in tokens:
rule_word_map[token].add((context_name, rule))
events_registered = False
def register_events(register: bool):
global events_registered
if register:
if not events_registered and live_update:
events_registered = True
# registry.register('post:update_contexts', contexts_updated)
registry.register("update_commands", commands_updated)
else:
events_registered = False
# registry.unregister('post:update_contexts', contexts_updated)
registry.unregister("update_commands", commands_updated)
@mod.action_class
class Actions:
def help_alphabet(ab: dict):
"""Provides the alphabet dictionary"""
# what you say is stored as a trigger
global alphabet
alphabet = ab
reset()
# print("help_alphabet - alphabet gui_alphabet: {}".format(gui_alphabet.showing))
# print(
# "help_alphabet - gui_context_help showing: {}".format(
# gui_context_help.showing
# )
# )
gui_context_help.hide()
gui_alphabet.hide()
gui_alphabet.show()
register_events(False)
actions.mode.enable("user.help")
def help_context_enabled():
"""Display contextual command info"""
reset()
refresh_context_command_map(enabled_only=True)
gui_alphabet.hide()
gui_context_help.show()
register_events(True)
actions.mode.enable("user.help")
def help_context():
"""Display contextual command info"""
reset()
refresh_context_command_map()
gui_alphabet.hide()
gui_context_help.show()
register_events(True)
actions.mode.enable("user.help")
def help_search(phrase: str):
"""Display command info for search phrase"""
global search_phrase
reset()
search_phrase = phrase
refresh_context_command_map()
gui_alphabet.hide()
gui_context_help.show()
register_events(True)
actions.mode.enable("user.help")
def help_selected_context(m: str):
"""Display command info for selected context"""
global selected_context
global selected_context_page
if not gui_context_help.showing:
reset()
refresh_context_command_map()
else:
selected_context_page = 1
update_active_contexts_cache(registry.active_contexts())
selected_context = m
gui_alphabet.hide()
gui_context_help.show()
register_events(True)
actions.mode.enable("user.help")
def help_next():
"""Navigates to next page"""
global current_context_page
global selected_context
global selected_context_page
global total_page_count
if gui_context_help.showing:
if selected_context is None and search_phrase is None:
if current_context_page != total_page_count:
current_context_page += 1
else:
current_context_page = 1
else:
if selected_context_page != total_page_count:
selected_context_page += 1
else:
selected_context_page = 1
def help_select_index(index: int):
"""Select the context by a number"""
global sorted_context_map_keys, selected_context
if gui_context_help.showing:
if index < setting_help_max_contexts_per_page.get() and (
(current_context_page - 1) * setting_help_max_contexts_per_page.get()
+ index
< len(sorted_context_map_keys)
):
if selected_context is None:
selected_context = ctx.lists["self.help_contexts"][
sorted_context_map_keys[
(current_context_page - 1)
* setting_help_max_contexts_per_page.get()
+ index
]
]
def help_previous():
"""Navigates to previous page"""
global current_context_page
global selected_context
global selected_context_page
global total_page_count
if gui_context_help.showing:
if selected_context is None and search_phrase is None:
if current_context_page != 1:
current_context_page -= 1
else:
current_context_page = total_page_count
else:
if selected_context_page != 1:
selected_context_page -= 1
else:
selected_context_page = total_page_count
def help_return():
"""Returns to the main help window"""
global selected_context
global selected_context_page
global show_enabled_contexts_only
if gui_context_help.showing:
refresh_context_command_map(show_enabled_contexts_only)
selected_context_page = 1
selected_context = None
def help_refresh():
"""Refreshes the help"""
global show_enabled_contexts_only
global selected_context
if gui_context_help.showing:
if selected_context == None:
refresh_context_command_map(show_enabled_contexts_only)
else:
update_active_contexts_cache(registry.active_contexts())
def help_hide():
"""Hides the help"""
reset()
# print("help_hide - alphabet gui_alphabet: {}".format(gui_alphabet.showing))
# print(
# "help_hide - gui_context_help showing: {}".format(gui_context_help.showing)
# )
gui_alphabet.hide()
gui_context_help.hide()
refresh_context_command_map()
register_events(False)
actions.mode.disable("user.help")
def commands_updated(_):
update_title()
app.register("ready", refresh_context_command_map)