| [Overview][Constants][Types][Classes][Procedures and functions][Variables] | Reference for unit 'Classes' (#rtl) |
[Properties (by Name)] [Methods (by Name)] [Events (by Name)]
Abstract base class for all Actions.
Source position: classesh.inc line 1426
type TBasicAction = class(TComponent) |
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public |
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constructor Create(); override; |
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Creates a new instance of a TBasicAction class. |
destructor Destroy; override; |
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Destroys the action. |
function HandlesTarget(); virtual; |
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Determines whether Target can be handled by this action |
procedure UpdateTarget(); virtual; |
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Notify client controls when the action updates itself. |
procedure ExecuteTarget(); virtual; |
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Executes the action on the Target object |
function Execute; dynamic; |
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Triggers the OnExecute event |
procedure RegisterChanges(); |
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Registers a new client with the action. |
procedure UnRegisterChanges(); |
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Unregisters a client from the list of clients |
function Update; virtual; |
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Triggers the OnUpdate event |
property ActionComponent: TComponent; [rw] |
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Returns the component that initiated the action. |
property OnExecute: TNotifyEvent; [rw] |
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Event triggered when the action executes. |
property OnUpdate: TNotifyEvent; [rw] |
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Event trigged when the application is idle. |
end; |
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Abstract base class for all Actions. |
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Base class for all components that need owner-owned functionality. |
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Base class for streaming system and persistent properties. |
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TObject |
TBasicAction implements a basic action class from which all actions are derived. It introduces all basic methods of an action, and implements functionality to maintain a list of clients, i.e. components that are connected with this action.
Do not create instances of TBasicAction. Instead, create a descendent class and create an instance of this class instead.
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Link between actions and action clients (e.g. controls) |
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Base class for all components that need owner-owned functionality. |
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