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/*
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* Copyright (c) 2004-2007 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: An observer interface for contact views.
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*
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*/
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#ifndef MVPBKCONTACTVIEWOBSERVER_H
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#define MVPBKCONTACTVIEWOBSERVER_H
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// INCLUDES
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#include <e32std.h>
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// FORWARD DECLARATIONS
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class MVPbkContactViewBase;
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class MVPbkContactLink;
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// CLASS DECLARATIONS
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/**
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* An observer interface for contact views.
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*
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* A client will receive events related to the view state and the view content
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* via this interface.
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* @see CVPbkContactManager::CreateContactViewLC
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*/
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class MVPbkContactViewObserver
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{
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public: // Interface
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/**
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* Called when a view is ready for use.
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*
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* This function may also be called if view is already ready. Then
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* it means that the view has been updated and the observer have
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* to take this into account.
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*
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* @param aView A contact view sending the event.
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*/
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virtual void ContactViewReady(
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MVPbkContactViewBase& aView ) = 0;
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/**
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* Called when a view is unavailable for a while.
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*
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* When the view is again available ContactViewReady will be called.
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* The contents of the view may change completely while it is
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* unavailable.
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*
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* @param aView A contact view sending the event.
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*/
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virtual void ContactViewUnavailable(
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MVPbkContactViewBase& aView ) = 0;
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/**
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* Called when a contact has been added to the view.
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*
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* @param aView A contact view sending the event.
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* @param aIndex An index of the contact in the view.
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* @param aContactLink A link to the added contact that is
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* valid only during the functio call.
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*/
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virtual void ContactAddedToView(
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MVPbkContactViewBase& aView,
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TInt aIndex,
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const MVPbkContactLink& aContactLink ) = 0;
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/**
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* Called when a contact has been removed from a view.
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*
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* @param aView A contact view sending the event.
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* @param aIndex An index of the removed contact.
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* @param aContactLink A link to the removed contact that is
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* valid only during this function call.
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*/
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virtual void ContactRemovedFromView(
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MVPbkContactViewBase& aView,
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TInt aIndex,
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const MVPbkContactLink& aContactLink ) = 0;
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/**
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* Called when an error occurs in the view.
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*
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* If client decides to destroy the view then it should do
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* it asynchronously because the view can access member data
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* after a call to this.
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*
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* @param aView A contact view sending the event.
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* @param aError An error code of the failure.
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* @param aErrorNotified ETrue if the implementation has already
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* notified user about the error using e.g
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* an ECOM plug-in, EFalse otherwise.
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*/
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virtual void ContactViewError(
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MVPbkContactViewBase& aView,
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TInt aError,
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TBool aErrorNotified ) = 0;
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/**
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* Returns an extension point for this interface or NULL.
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*
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* @param aExtensionUid no extensions defined currently.
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* @return an extension point for this interface or NULL.
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*/
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virtual TAny* ContactViewObserverExtension(TUid /*aExtensionUid*/)
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{ return NULL; }
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protected: // Destructor
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virtual ~MVPbkContactViewObserver() { }
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};
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/// Use this UID to access base contact extension 2.
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// Used as a parameter to ContactViewObserverExtension() method.
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const TUid KVPbkContactViewObserverExtension2Uid = { 2 };
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/**
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* This class is an extension to MVPbkContactViewObserver.
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*
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* @see MVPbkContactViewObserver
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*
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*/
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class MVPbkContactViewObserverExtension
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{
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protected: // Destructor
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virtual ~MVPbkContactViewObserverExtension() { }
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public:
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/**
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* Called when filtered contact removed from view
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*/
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virtual void FilteredContactRemovedFromView( MVPbkContactViewBase& aView ) = 0;
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};
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#endif // MVPBKCONTACTVIEWOBSERVER_H
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// End of File
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