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Contents
module Volt
class DocumentEvents
def initialize
@events = {}
end
def add(event, binding, handler)
# Track each document event based on the event, element id, then binding.object_id
unless @events[event]
# We haven't defined an event of type event yet, lets attach it to the
# document.
@events[event] = {}
that = self
`
$('body').on(event, function(e) {
that.$handle(event, e, e.target || e.originalEvent.target);
});
`
end
@events[event][binding.binding_name] ||= {}
@events[event][binding.binding_name][binding.object_id] = handler
end
def handle(event_name, event, target)
element = Element.find(target)
loop do
# Lookup the handler, make sure to not assume the group
# exists.
# TODO: Sometimes the event doesn't exist, but we still get
# an event.
handlers = @events[event_name]
handlers = handlers[element.id] if handlers
if handlers
handlers.values.each do |handler|
# Call each handler for this object
handler.call(event)
end
end
if element.size == 0
break
else
element = element.parent
end
end
nil
end
def remove(event, binding)
# Remove the event binding
@events[event][binding.binding_name].delete(binding.object_id)
# if there are no more handlers for this binding_name (the html id), then
# we remove the binding name hash
if @events[event][binding.binding_name].size == 0
@events[event].delete(binding.binding_name)
end
# if there are no more handlers in this event, we can unregister the event
# from the document
if @events[event].size == 0
@events.delete(event)
# Remove the event from the body
`
$('body').unbind(event);
`
end
end
end
end
Version data entries
34 entries across 34 versions & 1 rubygems