prosody
f1af4edd5722
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 @ 6657:f1af4edd5722

mod_pubsub: Add option for default affiliation of non-existent nodes (thanks Flow)
author Kim Alvefur <zash@zash.se>
date Tue, 05 May 2015 12:21:32 +0200
parent 6648:999434eb1bbf
child 6665:e923d7cb8430
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
5776
bd0ff8ae98a8 Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 5749
diff changeset
4 --
1522
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;
6648
999434eb1bbf util.events: Add local reference to table.remove (fixes traceback)
Kim Alvefur <zash@zash.se>
parents: 6641
diff changeset
12 local t_remove = table.remove;
1507
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
13 local t_sort = table.sort;
3501
90c18e0355af util.events: Event handler indices are now built lazily (faster server startup for large number of hosts).
Waqas Hussain <waqas20@gmail.com>
parents: 3500
diff changeset
14 local setmetatable = setmetatable;
90c18e0355af util.events: Event handler indices are now built lazily (faster server startup for large number of hosts).
Waqas Hussain <waqas20@gmail.com>
parents: 3500
diff changeset
15 local next = next;
1507
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
16
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
17 module "events"
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
18
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
19 function new()
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
20 local handlers = {};
6638
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
21 local global_wrappers;
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
22 local wrappers = {};
1507
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
23 local event_map = {};
3501
90c18e0355af util.events: Event handler indices are now built lazily (faster server startup for large number of hosts).
Waqas Hussain <waqas20@gmail.com>
parents: 3500
diff changeset
24 local function _rebuild_index(handlers, event)
1507
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
25 local _handlers = event_map[event];
3501
90c18e0355af util.events: Event handler indices are now built lazily (faster server startup for large number of hosts).
Waqas Hussain <waqas20@gmail.com>
parents: 3500
diff changeset
26 if not _handlers or next(_handlers) == nil then return; 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
27 local index = {};
1507
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
28 for handler in pairs(_handlers) do
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
29 t_insert(index, handler);
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
30 end
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
31 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
32 handlers[event] = index;
3501
90c18e0355af util.events: Event handler indices are now built lazily (faster server startup for large number of hosts).
Waqas Hussain <waqas20@gmail.com>
parents: 3500
diff changeset
33 return index;
1507
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
34 end;
3501
90c18e0355af util.events: Event handler indices are now built lazily (faster server startup for large number of hosts).
Waqas Hussain <waqas20@gmail.com>
parents: 3500
diff changeset
35 setmetatable(handlers, { __index = _rebuild_index });
1507
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
36 local function add_handler(event, handler, priority)
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
37 local map = event_map[event];
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
38 if map then
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
39 map[handler] = priority or 0;
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
40 else
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
41 map = {[handler] = priority or 0};
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
42 event_map[event] = map;
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
43 end
3501
90c18e0355af util.events: Event handler indices are now built lazily (faster server startup for large number of hosts).
Waqas Hussain <waqas20@gmail.com>
parents: 3500
diff changeset
44 handlers[event] = nil;
1507
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 local function remove_handler(event, handler)
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
47 local map = event_map[event];
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
48 if map then
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
49 map[handler] = nil;
3501
90c18e0355af util.events: Event handler indices are now built lazily (faster server startup for large number of hosts).
Waqas Hussain <waqas20@gmail.com>
parents: 3500
diff changeset
50 handlers[event] = nil;
3776
bc4f67a0658d util.events: Remove an event's table when it has no more handlers.
Waqas Hussain <waqas20@gmail.com>
parents: 3501
diff changeset
51 if next(map) == nil then
bc4f67a0658d util.events: Remove an event's table when it has no more handlers.
Waqas Hussain <waqas20@gmail.com>
parents: 3501
diff changeset
52 event_map[event] = nil;
bc4f67a0658d util.events: Remove an event's table when it has no more handlers.
Waqas Hussain <waqas20@gmail.com>
parents: 3501
diff changeset
53 end
1507
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
54 end
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
55 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
56 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
57 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
58 add_handler(event, handler);
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
59 end
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
60 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
61 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
62 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
63 remove_handler(event, handler);
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;
6638
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
66 local function _fire_event(event_name, event_data)
5749
60b3b6d27364 util.events: Remove varargs, event handlers can now only accept a single parameter
Matthew Wild <mwild1@gmail.com>
parents: 3776
diff changeset
67 local h = handlers[event_name];
1507
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
68 if h then
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
69 for i=1,#h do
5749
60b3b6d27364 util.events: Remove varargs, event handlers can now only accept a single parameter
Matthew Wild <mwild1@gmail.com>
parents: 3776
diff changeset
70 local ret = h[i](event_data);
1507
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
71 if ret ~= nil then return ret; end
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
72 end
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 end;
6638
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
75 local function fire_event(event_name, event_data)
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
76 local w = wrappers[event_name] or global_wrappers;
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
77 if w then
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
78 local curr_wrapper = #w;
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
79 local function c(event_name, event_data)
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
80 curr_wrapper = curr_wrapper - 1;
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
81 if curr_wrapper == 0 then
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
82 if global_wrappers == nil or w == global_wrappers then
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
83 return _fire_event(event_name, event_data);
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
84 end
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
85 w, curr_wrapper = global_wrappers, #global_wrappers;
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
86 return w[curr_wrapper](c, event_name, event_data);
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
87 else
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
88 return w[curr_wrapper](c, event_name, event_data);
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
89 end
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
90 end
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
91 return w[curr_wrapper](c, event_name, event_data);
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
92 end
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
93 return _fire_event(event_name, event_data);
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
94 end
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
95 local function add_wrapper(event_name, wrapper)
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
96 local w;
6641
b44ebfe81c73 util.events: Change from nil to false to indicate adding a global wrapper
Matthew Wild <mwild1@gmail.com>
parents: 6638
diff changeset
97 if event_name == false then
6638
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
98 w = global_wrappers;
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
99 if not w then
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
100 w = {};
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
101 global_wrappers = w;
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
102 end
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
103 else
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
104 w = wrappers[event_name];
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
105 if not w then
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
106 w = {};
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
107 wrappers[event_name] = w;
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
108 end
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
109 end
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
110 w[#w+1] = wrapper;
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
111 end
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
112 local function remove_wrapper(event_name, wrapper)
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
113 local w;
6641
b44ebfe81c73 util.events: Change from nil to false to indicate adding a global wrapper
Matthew Wild <mwild1@gmail.com>
parents: 6638
diff changeset
114 if event_name == false then
6638
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
115 w = global_wrappers;
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
116 else
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
117 w = wrappers[event_name];
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
118 end
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
119 if not w then return; end
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
120 for i = #w, 1 do
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
121 if w[i] == wrapper then
6648
999434eb1bbf util.events: Add local reference to table.remove (fixes traceback)
Kim Alvefur <zash@zash.se>
parents: 6641
diff changeset
122 t_remove(w, i);
6638
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
123 end
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
124 end
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
125 if #w == 0 then
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
126 if event_name == nil then
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
127 global_wrappers = nil;
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
128 else
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
129 wrappers[event_name] = nil;
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
130 end
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
131 end
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
132 end
1507
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
133 return {
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
134 add_handler = add_handler;
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
135 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
136 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
137 remove_handlers = remove_handlers;
6638
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
138 wrappers = {
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
139 add_handler = add_wrapper;
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
140 remove_handler = remove_wrapper;
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
141 };
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
142 add_wrapper = add_wrapper;
9d2b56fd6b47 util.events: Add support for event wrappers, functions which can wrap the calling of event handlers to run code before/after an event (for debugging, statistics, logging purposes, etc.)
Matthew Wild <mwild1@gmail.com>
parents: 5776
diff changeset
143 remove_wrapper = remove_wrapper;
1507
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
144 fire_event = fire_event;
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
145 _handlers = handlers;
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
146 _event_map = event_map;
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
147 };
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
148 end
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
149
92357dffe743 util.events: Convert from Windows line endings
Matthew Wild <mwild1@gmail.com>
parents: 1417
diff changeset
150 return _M;