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Contents
module Volt
module StateManager
def state_for(state_name)
ivar_name = :"@#{state_name}"
# Depend on the dep
state_dep_for(state_name).depend
instance_variable_get(ivar_name)
end
# Called from the QueryListener when the data is loaded
def change_state_to(state_name, new_state, trigger=true)
# use an instance variable for the state storage
ivar_name = :"@#{state_name}"
old_state = instance_variable_get(ivar_name)
instance_variable_set(ivar_name, new_state)
# Trigger changed on the 'state' method
if old_state != new_state && trigger
dep = state_dep_for(state_name, false)
dep.changed! if dep
end
end
private
# Get a state ivar for state_name
# @params [String] the name of the state variable
# @params [Boolean] if true, one will be created if it does not exist
def state_dep_for(state_name, create=true)
dep_ivar_name = :"@#{state_name}_dep"
dep = instance_variable_get(dep_ivar_name)
if !dep && create
dep = Dependency.new
instance_variable_set(dep_ivar_name, dep)
end
dep
end
end
end
Version data entries
20 entries across 20 versions & 1 rubygems