TBasicAction class

In unit Classes

Abstract base class for all Actions.

Declaration

pascal

TBasicAction = class(TComponent)

Inheritance

TBasicAction
TComponent
TPersistent
TObject

Descends from it: TContainedAction

Description

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 descendant class and create an instance of this class instead.

Properties

`ActionComponent`	public	Returns the component that initiated the action.
`Clients`	public

Methods

`Change`	protected	Calls the OnChange handler.
`Notification`	protected	Called by components that are freed and which received a FreeNotification.
`SetOnExecute`	protected	Assigns an OnExecute event handler.
`ClientCount`	protected
`GetClient`	protected
`Create`	public	Creates a new instance of a class.
`Destroy`	public	Destroys the action.
`HandlesTarget`	public	Determines whether Target can be handled by this action.
`UpdateTarget`	public	Notify client controls when the action updates itself.
`ExecuteTarget`	public	Executes the action on the Target object.
`Execute`	public	Triggers the OnExecute event.
`RegisterChanges`	public	Registers a new client with the action.
`UnRegisterChanges`	public	Unregisters a client from the list of clients.
`Update`	public	Triggers the OnUpdate event.
`Suspended`	public

Events

`OnChange`	protected	Occurs when one of the action's properties changes.
`OnExecute`	public	Event triggered when the action executes.
`OnUpdate`	public	Event triggered when the application is idle.

Fields

FClients protected List with components linked to this action.

Inherited

From TComponent (73)

_AddRef _Release BeforeDestruction CanObserve ChangeName ComObject ComponentCount ComponentIndex Components ComponentState ComponentStyle DefineProperties DesignInfo DestroyComponents Destroying ExecuteAction FindComponent FreeNotification FreeOnRelease GetChildOwner GetChildParent GetChildren GetDeltaStreams GetEnumerator GetIDsOfNames GetNamePath GetObservers GetOwner GetParentComponent GetTypeInfo GetTypeInfoCount HasParent iicrGetComponent InsertComponent Invoke IsImplementorOf Loaded Loading Name ObserverAdded Observers OnGetDeltaStreams Owner PaletteCreated QueryInterface ReadDeltaState ReadDeltaStream ReadState ReferenceInterface RemoveComponent RemoveFreeNotification RemoveFreeNotifications SafeCallException SetAncestor SetChildOrder SetDesigning SetDesignInstance SetInline SetName SetParentComponent SetSubComponent Tag ToString TToStringNameMode UpdateAction Updated UpdateRegistry Updating ValidateContainer ValidateInsert ValidateRename VCLComObject WriteState

From TPersistent (5)

Assign AssignTo FPOAttachObserver FPODetachObserver FPONotifyObservers

From TObject (37)

AfterConstruction CheckDisposed ClassInfo ClassName ClassNameIs ClassParent ClassType CleanupInstance DefaultHandler DefaultHandlerStr Dispatch DispatchStr Disposed DisposeOf Equals FieldAddress Free FreeInstance GetDisposed GetHashCode GetInterface GetInterfaceByStr GetInterfaceEntry GetInterfaceEntryByStr GetInterfaceTable GetInterfaceWeak GetLastCastErrorInfo InheritsFrom InitInstance InstanceSize MethodAddress MethodName newinstance QualifiedClassName StringMessageTable SystemHasExtendedRTTI UnitName

An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.