module timelinelib.canvas.data.memorydb.db

timelinelib.canvas.data.memorydb.db.STATE_CHANGE_CATEGORY = 1

timelinelib.canvas.data.memorydb.db.STATE_CHANGE_ANY = 2

class timelinelib.canvas.data.memorydb.db.MemoryDB

Bases: timelinelib.general.observer.Observable

__init__()

Initialize self. See help(type(self)) for accurate signature.

new_category(**kwargs)

new_milestone(**kwargs)

new_era(**kwargs)

new_event(**kwargs)

new_container(**kwargs)

new_subevent(**kwargs)

get_timestamp_string()

property now

next_id()

transaction(name)

clear_transactions()

transactions_status()

display_in_canvas(canvas)

is_saved()

get_should_lock()

set_should_lock(should_lock)

register_save_callback(callback)

get_time_type()

set_time_type(time_type)

is_read_only()

set_readonly()

search(search_string)

get_events(time_period)

get_all_events()

property all_milestones

get_max_sort_order()

get_first_event()

get_last_event()

save_events(events)

save_event(event)

delete_event(event_or_id)

get_all_eras()

get_all_periods()

save_era(era)

delete_era(era)

get_categories()

get_containers()

save_category(category)

get_category_by_name(name)

get_category_by_id(id_)

delete_category(category_or_id)

get_saved_now()

set_saved_now(time)

load_view_properties(view_properties)

save_view_properties(view_properties)

place_event_after_event(event_to_place, target_event)

place_event_before_event(event_to_place, target_event)

undo()

redo()

undo_enabled()

redo_enabled()

find_event_with_ids(ids)

find_event_with_id(event_id)

get_displayed_period()

Inheritors can call this method to get the displayed period used in load_view_properties and save_view_properties.

set_displayed_period(period)

Inheritors can call this method to set the displayed period used in load_view_properties and save_view_properties.

get_hidden_categories()

set_hidden_categories(hidden_categories)

import_db(db)

compress()

measure_distance_between_events(event_ids)

get_start_and_end_for_all_visible_events(filter_function)

The events collection contains milestone events as well as ordinary events. The self.get_first_event function only consider ordinary events, so if there is only milestone events in the timeline the test

len(events) > 0

will pass, but the self.get_first_event will return None. TODO: Decide if milestone events should be included in this function?

get_distance_info(event_ids)