====== Limb3 Commands ======

===== Short description =====

Limb Commands implement a very simple interface which consists of the only **perform()** method. Commands are the main containers of an application specific logic.


===== UML Static Structure =====

{{{ limb:architecture:limb3.0_commands.png }}}

===== Frequently used generic commands =====

^Class name^Desription^
|lmbBaseCommand|Holdes cached Request, Response and [[lmbToolkit]] objects and allows to perform other commands via performCommand() method.|
|[[lmbSetViewCommand]]|Sets current view([[lmbSimpleView]] object) into [[lmbToolkit]].|
|[[lmbObservableCommand]]|Allows to register onPerform event listeners(when command is performed listeners are notified)|
|[[lmbPropertyOptionalCommand]]|Is a child of [[lmbObservableCommand]] which notify listeners if a dataspace contains a specified property. It accepts dataspace and property name in constructor. This class is mostly used in multi-action forms. See [[lmbFormCommand]] description page for a usage example.|
|[[lmbFormCommand]]|Processes forms, allows to register onPerform, onInit, onValid and onNotValid listeners, validates user input and holds a dataspace with data received from user. Used jointly with [[lmbFormView]].|