author | Waqas Hussain <waqas20@gmail.com> |
Fri, 17 Sep 2010 04:09:59 +0500 | |
changeset 3500 | a49ed9166820 |
parent 3499 | 91c55ae31ef3 |
child 3501 | 90c18e0355af |
permissions | -rw-r--r-- |
1522
569d58d21612
Add copyright header to those files missing one
Matthew Wild <mwild1@gmail.com>
parents:
1507
diff
changeset
|
1 |
-- Prosody IM |
2923
b7049746bd29
Update copyright headers for 2010
Matthew Wild <mwild1@gmail.com>
parents:
1522
diff
changeset
|
2 |
-- Copyright (C) 2008-2010 Matthew Wild |
b7049746bd29
Update copyright headers for 2010
Matthew Wild <mwild1@gmail.com>
parents:
1522
diff
changeset
|
3 |
-- Copyright (C) 2008-2010 Waqas Hussain |
1522
569d58d21612
Add copyright header to those files missing one
Matthew Wild <mwild1@gmail.com>
parents:
1507
diff
changeset
|
4 |
-- |
569d58d21612
Add copyright header to those files missing one
Matthew Wild <mwild1@gmail.com>
parents:
1507
diff
changeset
|
5 |
-- This project is MIT/X11 licensed. Please see the |
569d58d21612
Add copyright header to those files missing one
Matthew Wild <mwild1@gmail.com>
parents:
1507
diff
changeset
|
6 |
-- COPYING file in the source package for more information. |
569d58d21612
Add copyright header to those files missing one
Matthew Wild <mwild1@gmail.com>
parents:
1507
diff
changeset
|
7 |
-- |
569d58d21612
Add copyright header to those files missing one
Matthew Wild <mwild1@gmail.com>
parents:
1507
diff
changeset
|
8 |
|
1507
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
9 |
|
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
10 |
local pairs = pairs; |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
11 |
local t_insert = table.insert; |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
12 |
local t_sort = table.sort; |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
13 |
|
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
14 |
module "events" |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
15 |
|
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
16 |
function new() |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
17 |
local handlers = {}; |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
18 |
local event_map = {}; |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
19 |
local function _rebuild_index(event) -- TODO optimize index rebuilding |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
20 |
local _handlers = event_map[event]; |
3500
a49ed9166820
util.events: Create new index on handler change instead of modifying existing one (this makes util.events fully reentrant).
Waqas Hussain <waqas20@gmail.com>
parents:
3499
diff
changeset
|
21 |
local index = {}; |
1507
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
22 |
for handler in pairs(_handlers) do |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
23 |
t_insert(index, handler); |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
24 |
end |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
25 |
t_sort(index, function(a, b) return _handlers[a] > _handlers[b]; end); |
3500
a49ed9166820
util.events: Create new index on handler change instead of modifying existing one (this makes util.events fully reentrant).
Waqas Hussain <waqas20@gmail.com>
parents:
3499
diff
changeset
|
26 |
handlers[event] = index; |
1507
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
27 |
end; |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
28 |
local function add_handler(event, handler, priority) |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
29 |
local map = event_map[event]; |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
30 |
if map then |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
31 |
map[handler] = priority or 0; |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
32 |
else |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
33 |
map = {[handler] = priority or 0}; |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
34 |
event_map[event] = map; |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
35 |
end |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
36 |
_rebuild_index(event); |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
37 |
end; |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
38 |
local function remove_handler(event, handler) |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
39 |
local map = event_map[event]; |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
40 |
if map then |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
41 |
map[handler] = nil; |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
42 |
_rebuild_index(event); |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
43 |
end |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
44 |
end; |
2406
2c416334579c
util.events: Rename add_plugin() and remove_plugin() to add_handlers() and remove_handlers() respectively
Matthew Wild <mwild1@gmail.com>
parents:
1522
diff
changeset
|
45 |
local function add_handlers(handlers) |
2c416334579c
util.events: Rename add_plugin() and remove_plugin() to add_handlers() and remove_handlers() respectively
Matthew Wild <mwild1@gmail.com>
parents:
1522
diff
changeset
|
46 |
for event, handler in pairs(handlers) do |
1507
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
47 |
add_handler(event, handler); |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
48 |
end |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
49 |
end; |
2406
2c416334579c
util.events: Rename add_plugin() and remove_plugin() to add_handlers() and remove_handlers() respectively
Matthew Wild <mwild1@gmail.com>
parents:
1522
diff
changeset
|
50 |
local function remove_handlers(handlers) |
2c416334579c
util.events: Rename add_plugin() and remove_plugin() to add_handlers() and remove_handlers() respectively
Matthew Wild <mwild1@gmail.com>
parents:
1522
diff
changeset
|
51 |
for event, handler in pairs(handlers) do |
1507
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
52 |
remove_handler(event, handler); |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
53 |
end |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
54 |
end; |
3498
3f52f3d9db5a
util.events: Removed dispatcher creation functions (these weren't being used).
Waqas Hussain <waqas20@gmail.com>
parents:
2925
diff
changeset
|
55 |
local function fire_event(event, ...) |
1507
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
56 |
local h = handlers[event]; |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
57 |
if h then |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
58 |
for i=1,#h do |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
59 |
local ret = h[i](...); |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
60 |
if ret ~= nil then return ret; end |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
61 |
end |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
62 |
end |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
63 |
end; |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
64 |
return { |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
65 |
add_handler = add_handler; |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
66 |
remove_handler = remove_handler; |
3499
91c55ae31ef3
util.events: Fixed the exposed API for adding/removing sets of event handlers.
Waqas Hussain <waqas20@gmail.com>
parents:
3498
diff
changeset
|
67 |
add_handlers = add_handlers; |
91c55ae31ef3
util.events: Fixed the exposed API for adding/removing sets of event handlers.
Waqas Hussain <waqas20@gmail.com>
parents:
3498
diff
changeset
|
68 |
remove_handlers = remove_handlers; |
1507
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
69 |
fire_event = fire_event; |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
70 |
_handlers = handlers; |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
71 |
_event_map = event_map; |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
72 |
}; |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
73 |
end |
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
74 |
|
92357dffe743
util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents:
1417
diff
changeset
|
75 |
return _M; |