class IRB::Notifier::CompositeNotifier
A class that can be used to create a group of notifier objects with the intent of representing a leveled notification system for irb.
This class will allow you to generate other notifiers, and assign them the appropriate level for output.
The Notifier class provides a class-method IRB::Notifier#def_notifier to create a new composite notifier. Using the first composite notifier object you create, sibling notifiers can be initialized with def_notifier.
Attributes
Returns the leveled notifier for this object
Returns the leveled notifier for this object
List of notifiers in the group
Public Class Methods
Create a new composite notifier object with the given prefix
,
and base_notifier
to use for output.
# File lib/irb/notifier.rb, line 118 def initialize(prefix, base_notifier) super @notifiers = [D_NOMSG] @level_notifier = D_NOMSG end
Public Instance Methods
Creates a new LeveledNotifier in the composite notifiers group.
The given prefix
will be assigned to the notifier, and
level
will be used as the index of the notifiers Array.
This method returns the newly created instance.
# File lib/irb/notifier.rb, line 134 def def_notifier(level, prefix = "") notifier = LeveledNotifier.new(self, level, prefix) @notifiers[level] = notifier notifier end
Sets the leveled notifier for this object.
When the given value
is an instance of AbstractNotifier, level_notifier
is set to the given object.
When an Integer is given, level_notifier
is set to the notifier at the index value
in the notifiers Array.
If no notifier exists at the index value
in the notifiers Array, an
ErrUndefinedNotifier exception is raised.
An ErrUnrecognizedLevel exception is raised if the given value
is not found in the existing notifiers Array, or
an instance of AbstractNotifier
# File lib/irb/notifier.rb, line 158 def level_notifier=(value) case value when AbstractNotifier @level_notifier = value when Integer l = @notifiers[value] Notifier.Raise ErrUndefinedNotifier, value unless l @level_notifier = l else Notifier.Raise ErrUnrecognizedLevel, value unless l end end