diff options
Diffstat (limited to 'engine/js/lib/events.js')
-rw-r--r-- | engine/js/lib/events.js | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/engine/js/lib/events.js b/engine/js/lib/events.js new file mode 100644 index 000000000..358dd6280 --- /dev/null +++ b/engine/js/lib/events.js @@ -0,0 +1,65 @@ +elgg.provide('elgg.config.events'); +elgg.provide('elgg.config.events.all'); +elgg.provide('elgg.config.events.all.all'); + +elgg.register_event_handler = function(event, type, callback, priority) { + elgg.assertTypeOf('string', event); + elgg.assertTypeOf('string', event); + elgg.assertTypeOf('function', callback); + + if (!event || !type) { + return false; + } + + elgg.provide('elgg.config.events.' + event + '.' + type); + + var events = elgg.config.events; + + if (!(events[event][type] instanceof elgg.ElggPriorityList)) { + events[event][type] = new elgg.ElggPriorityList(); + } + + return events[event][type].insert(callback, priority); +}; + +elgg.trigger_event = function(event, type, object) { + elgg.assertTypeOf('string', event); + elgg.assertTypeOf('string', event); + + elgg.provide('elgg.config.events.' + event + '.' + type); + elgg.provide('elgg.config.events.all.' + type); + elgg.provide('elgg.config.events.' + event + '.all'); + elgg.provide('elgg.config.events.all.all'); + + var events = elgg.config.events; + + var callEventHandler = function(handler) { + return handler(event, type, object) !== false; + }; + + if (events[event][type] instanceof elgg.ElggPriorityList) { + if (!events[event][type].every(callEventHandler)) { + return false; + } + } + + if (events['all'][type] instanceof elgg.ElggPriorityList) { + if (!events['all'][type].every(callEventHandler)) { + return false; + } + } + + if (events[event]['all'] instanceof elgg.ElggPriorityList) { + if (!events[event]['all'].every(callEventHandler)) { + return false; + } + } + + if (events['all']['all'] instanceof elgg.ElggPriorityList) { + if (!events['all']['all'].every(callEventHandler)) { + return false; + } + } + + return true; +};
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