THYBaseMenuController

Overview

The THYBaseMenuController base class provides methods for dealing with menu objects. The Hydra framework uses controller classes to establish a connection with a specific menu object.

You will not have to use this class directly, instead, you can use one of its descendants to specify the menu object that will be used by the Hydra framework for menu merging.

Note: You can read about menu and toolbar usage in the Hydra framework in this article. Please also look at the Actions sample shipped with Hydra to see menu and toolbar merging in action.

Location


Instance Methods

constructor Create  override

Creates a new instance of the class.

constructor Create(aOwner: TComponent)

Parameters:

  • aOwner: Reference to the owner object.

AddReference  protected    (declared in THYUpdateableController)

Supplying AddReference calls within BeginUpate and EndUpdate pairs allows the subsequent deletion of all added items via a single call to DeleteUpdates.

procedure AddReference(const anItem: IHYVCLObjectReference)

Parameters:

  • anItem: Reference to an object.

BeginUpdate  protected virtual    (declared in THYUpdateableController)

Calls BeginUpdate prior to call(s) to AddReference. Each BeginUpdate must have an associated EndUpdate.

Items added by AddReference can subsequently be removed by a single call to DeleteUpdates.

procedure BeginUpdate(const aGUID: TGUID)

Parameters:

  • aGUID: Unique identifier of the session.

DeleteUpdates  protected virtual    (declared in THYUpdateableController)

DeleteUpdates removes all items added to the host's menu and toolbars via AddReference calls.

procedure DeleteUpdates(const aGUID: TGUID)

Parameters:

  • aGUID: Unique identifier of the session.

DoGetItems  protected virtual abstract

Gets reference to top level the menu item from the underlying control.

function DoGetItems: IHYVCLMenuItem

EndUpdate  protected virtual    (declared in THYUpdateableController)

Calls EndUpdate following call(s) to AddReference preceded by BeginUpdate.

procedure EndUpdate(const aGUID: TGUID)

Parameters:

  • aGUID: Unique identifier of the session.

GetIsUpdating  protected    (declared in THYUpdateableController)

Returns the value which indicates whether controller is being updated.

function GetIsUpdating: Boolean

GetItems  protected

Gets reference to top level the menu item.

function GetItems: IHYVCLMenuItem

GetUpdateCount  protected    (declared in THYUpdateableController)

Returns the number of processed updates.

function GetUpdateCount(const aGUID: TGUID): Integer

Parameters:

  • aGUID: Unique identifier of the session.