author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 11 Jun 2010 14:27:06 +0300 | |
changeset 28 | 85e0c0339cc3 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2004-2009 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: Hid headset field finder |
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* |
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*/ |
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#ifndef T_FINDER_H |
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#define T_FINDER_H |
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|
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#include <e32std.h> |
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#include "hidreportroot.h" |
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|
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/** |
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* Headset finder |
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* |
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* Field finder for the consumer/multimedia keys field. |
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* |
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*/ |
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class THeadsetFinder : public MHidFieldFinder |
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{ |
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public: |
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// From MHidFieldFinder |
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/** |
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* From MHidFieldFinder |
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* Called by THidFieldSearch::SearchL() during traversal of the |
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* report descriptor tree when a CCollection is encountered. It |
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* will be called once, and only once, for every CCollection in the |
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* descriptor. It is not called for the root collection |
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* (the CReportRoot). |
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* |
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* @param aCollection A pointer to the collection object. |
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* @return ETrue if the contents of this collection (any child CField |
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* or CCollection objects) should be examined. A driver would return |
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* EFalse if a collection was not of a compatible type, for |
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* example if the usage page was inappropriate. |
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*/ |
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virtual TBool BeginCollection( const CCollection *aCollection ); |
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|
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/** |
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* From MHidFieldFinder |
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* Called by THidFieldSearch::SearchL() during traversal of the |
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* report descriptor tree when all CFields and child CCollections |
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* of a CCollection have been examined. It will be called once, |
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* and only once, for every CCollection in the descriptor. It is |
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* not called for the root collection (the CReportRoot). |
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* |
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* @param aCollection Collection pointer |
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* @return ETrue if the search (tree traversal) should |
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* continue. A driver returns EFalse if it has finished examining |
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* the whole descriptor, in general this will be if it has |
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* established that it is compatible with the report descriptor. |
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*/ |
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virtual TBool EndCollection( const CCollection *aCollection ); |
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|
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/** |
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* From MHidFieldFinder |
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* Called once for each CField in a CCollection by |
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* THidFieldSearch::SearchL() during the traversal of a report |
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* descriptor tree. |
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* |
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* @param aField THe pointer to field |
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*/ |
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virtual void Field( const CField* aField ); |
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public: |
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/** |
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* Constructor |
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*/ |
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THeadsetFinder(); |
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/** |
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* Check whether supported fields has been found. |
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* |
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* @return ETrue if it has. |
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*/ |
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TBool Found() const; |
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/** |
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* Check whether a given field contains the consumer usages. |
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* |
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* @param aField Pointer to the field to test. |
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* @return ETrue if it does. |
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*/ |
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TBool IsConsumer( const CField* aField ) const; |
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/** |
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* Check whether a given field contains the telephony usages. |
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* |
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* @param aField Pointer to the field to test. |
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* @return ETrue if it does. |
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*/ |
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TBool IsTelephony( const CField* aField ) const; |
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/** |
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* Reset the field pointer array |
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* |
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*/ |
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void EmptyList(); |
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/** |
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* Returns number of supported fields. |
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* |
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* @return Field count |
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*/ |
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TInt FieldCount(); |
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/** |
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* Read the field pointer from array at specified index |
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* |
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* @param aIndex Index to the field pointer array |
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* @return Pointer to the desired field |
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*/ |
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CField* GetFieldAtIndex( TInt aIndex ); |
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private: |
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/** |
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* Pointer to the top level application collection being searched. |
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* Not own. |
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*/ |
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const CCollection* iAppCollection; |
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/** |
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* Array of field pointers: |
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* Not own. |
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*/ |
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RPointerArray<CField> iFieldList; |
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}; |
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#endif |