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comparison util/events.lua @ 3498:3f52f3d9db5a

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util.events: Removed dispatcher creation functions (these weren't being used).
author Waqas Hussain <waqas20@gmail.com>
date Fri, 17 Sep 2010 04:09:58 +0500
parents 692b3c6c5bd2
children 91c55ae31ef3
comparison
equal deleted inserted replaced
3497:e9159b325e33 3498:3f52f3d9db5a
5 -- This project is MIT/X11 licensed. Please see the 5 -- This project is MIT/X11 licensed. Please see the
6 -- COPYING file in the source package for more information. 6 -- COPYING file in the source package for more information.
7 -- 7 --
8 8
9 9
10 local ipairs = ipairs;
11 local pairs = pairs; 10 local pairs = pairs;
12 local t_insert = table.insert; 11 local t_insert = table.insert;
13 local t_sort = table.sort; 12 local t_sort = table.sort;
14 local select = select;
15 13
16 module "events" 14 module "events"
17 15
18 function new() 16 function new()
19 local dispatchers = {};
20 local handlers = {}; 17 local handlers = {};
21 local event_map = {}; 18 local event_map = {};
22 local function _rebuild_index(event) -- TODO optimize index rebuilding 19 local function _rebuild_index(event) -- TODO optimize index rebuilding
23 local _handlers = event_map[event]; 20 local _handlers = event_map[event];
24 local index = handlers[event]; 21 local index = handlers[event];
55 local function remove_handlers(handlers) 52 local function remove_handlers(handlers)
56 for event, handler in pairs(handlers) do 53 for event, handler in pairs(handlers) do
57 remove_handler(event, handler); 54 remove_handler(event, handler);
58 end 55 end
59 end; 56 end;
60 local function _create_dispatcher(event) -- FIXME duplicate code in fire_event 57 local function fire_event(event, ...)
61 local h = handlers[event];
62 if not h then h = {}; handlers[event] = h; end
63 local dispatcher = function(...)
64 for i=1,#h do
65 local ret = h[i](...);
66 if ret ~= nil then return ret; end
67 end
68 end;
69 dispatchers[event] = dispatcher;
70 return dispatcher;
71 end;
72 local function get_dispatcher(event)
73 return dispatchers[event] or _create_dispatcher(event);
74 end;
75 local function fire_event(event, ...) -- FIXME duplicates dispatcher code
76 local h = handlers[event]; 58 local h = handlers[event];
77 if h then 59 if h then
78 for i=1,#h do 60 for i=1,#h do
79 local ret = h[i](...); 61 local ret = h[i](...);
80 if ret ~= nil then return ret; end 62 if ret ~= nil then return ret; end
81 end 63 end
82 end 64 end
83 end; 65 end;
84 local function get_named_arg_dispatcher(event, ...)
85 local dispatcher = get_dispatcher(event);
86 local keys = {...};
87 local data = {};
88 return function(...)
89 for i, key in ipairs(keys) do data[key] = select(i, ...); end
90 dispatcher(data);
91 end;
92 end;
93 return { 66 return {
94 add_handler = add_handler; 67 add_handler = add_handler;
95 remove_handler = remove_handler; 68 remove_handler = remove_handler;
96 add_plugin = add_plugin; 69 add_plugin = add_plugin;
97 remove_plugin = remove_plugin; 70 remove_plugin = remove_plugin;
98 get_dispatcher = get_dispatcher;
99 fire_event = fire_event; 71 fire_event = fire_event;
100 get_named_arg_dispatcher = get_named_arg_dispatcher;
101 _dispatchers = dispatchers;
102 _handlers = handlers; 72 _handlers = handlers;
103 _event_map = event_map; 73 _event_map = event_map;
104 }; 74 };
105 end 75 end
106 76