prosody
91c55ae31ef3
util/events.lua

Find changesets by keywords by author, files, the commit message, revision number or hash, or revset expression.

Software / code / prosody

Annotate

util/events.lua @ 3499:91c55ae31ef3

util.events: Fixed the exposed API for adding/removing sets of event handlers.
author Waqas Hussain <waqas20@gmail.com>
date Fri, 17 Sep 2010 04:09:58 +0500
parent 3498:3f52f3d9db5a
child 3500:a49ed9166820
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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];
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
21 local index = handlers[event];
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
22 if index then
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
23 for i=#index,1,-1 do index[i] = nil; end
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
24 else index = {}; handlers[event] = index; end
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
25 for handler in pairs(_handlers) do
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
26 t_insert(index, handler);
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 t_sort(index, function(a, b) return _handlers[a] > _handlers[b]; end);
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
29 end;
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
30 local function add_handler(event, handler, priority)
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
31 local map = event_map[event];
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
32 if map then
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 else
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
35 map = {[handler] = priority or 0};
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
36 event_map[event] = map;
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 _rebuild_index(event);
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
39 end;
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
40 local function remove_handler(event, handler)
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
41 local map = event_map[event];
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
42 if map then
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
43 map[handler] = nil;
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
44 _rebuild_index(event);
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
45 end
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
46 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
47 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
48 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
49 add_handler(event, handler);
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
50 end
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
51 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
52 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
53 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
54 remove_handler(event, handler);
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
55 end
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
56 end;
3498
3f52f3d9db5a util.events: Removed dispatcher creation functions (these weren't being used).
Waqas Hussain <waqas20@gmail.com>
parents: 2925
diff changeset
57 local function fire_event(event, ...)
1507
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
58 local h = handlers[event];
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
59 if h then
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
60 for i=1,#h do
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
61 local ret = h[i](...);
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
62 if ret ~= nil then return ret; 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 end
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
65 end;
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
66 return {
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
67 add_handler = add_handler;
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
68 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
69 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
70 remove_handlers = remove_handlers;
1507
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
71 fire_event = fire_event;
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
72 _handlers = handlers;
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
73 _event_map = event_map;
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 end
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
76
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
77 return _M;