author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 12 Mar 2010 15:43:43 +0200 | |
branch | RCL_3 |
changeset 9 | aabf2c525e0f |
parent 0 | 2f259fa3e83a |
child 51 | fcdfafb36fe7 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2002-2010 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: Support for Emergency Calls. |
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* Pressed keys are tracked in a buffer and CEmergencyNumberUtils |
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* is used to find out if the buffer matches to emergency number. |
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* Observers, if registered are called to notify them. |
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* |
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* |
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*/ |
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#if !defined(__AKNECS_H__) |
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#define __AKNECS_H__ |
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// INCLUDES |
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#include <babitflags.h> |
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#include <eikapp.h> |
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#include <eikdef.h> |
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#include "AknWsEventObserver.h" |
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class CPhCltEmergencyCall; |
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class CPhCltEmergencyCallObserver; |
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// CONSTANTS |
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// Maximum length of an emergency number |
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const TInt KAknEcsMaxMatchingLength = 6; |
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// Minimum length of service call number |
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const TInt KAknServiceCallMinLength = 3; |
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// Separator character for the emergency number string |
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_LIT( KAknEcsSeparator, " "); |
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// Maximum time in Microseconds between keys in a valid emergency call entry: |
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const TInt KEcsInterKeyTimeout = 4000000; |
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// Deprecated |
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const TInt KAknMaxEmergencyNumberString = 200; |
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// FORWARD DECLARATIONS |
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// Forward declarations; Full declaration comes later |
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class MAknEcsObserver; |
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class CAknMatchingCharacterQueue; |
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// CLASS DECLARATIONS |
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/** |
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* Central coordinating object in the emergency call system |
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* Objects of this class own the number queue and own the interface object to the stored |
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* emergency numbers. |
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* |
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* A phone client session is also open while constructed |
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* |
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*/ |
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class CAknEcsDetector : public CBase, public MAknWsEventObserver |
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{ |
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public: |
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/** |
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* Enumeration to carry the state of the Ecs detector |
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*/ |
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enum TState |
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{ |
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ENotFullyConstructed, |
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EEmpty, |
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ENoMatch, |
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EPartialMatch, // Not in use. |
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ECompleteMatch, |
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ECompleteMatchThenSendKey, |
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ECallAttempted, |
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EServiceNumMatch |
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}; |
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public: |
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/** |
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* C++ destructor |
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*/ |
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IMPORT_C virtual ~CAknEcsDetector(); |
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/** |
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* Two phase constructor for Ecs detector |
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* Static method. |
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*/ |
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IMPORT_C static CAknEcsDetector* NewL(); |
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// From MAknWsEventObserver |
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/** |
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* Handle and event coming from the AppUi. Default implementation handles all keys |
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* and updates the Status(), CurrentMatch(), and IndexOfCurrentMatch() |
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* |
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*/ |
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IMPORT_C virtual void HandleWsEventL(const TWsEvent& aEvent,CCoeControl* aDestination ); |
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109 |
|
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/** |
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* Add a character to the emergency call buffer. This should be fed with both numberic |
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* key presses and the Send key. |
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* |
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* @param aNewChar New character to emergency call buffer. |
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*/ |
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IMPORT_C void AddChar( TText aNewChar ); |
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|
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/** |
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* Set the entire contents of the emergency call buffer. A reset is performed first, and then |
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* the characters in the passed descriptor are added to the buffer. |
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* Emergency number is matched only if there is not other content in the string. |
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* |
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* @param aNewBuffer Emergency call buffer. |
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*/ |
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IMPORT_C void SetBuffer( const TDesC& aNewBuffer ); |
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|
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/** |
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* Reset the buffer to a just initialized state. |
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*/ |
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IMPORT_C void Reset(); |
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|
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/** |
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* Returns the current state of the Ecs Detector |
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* |
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* @return The state of the object |
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*/ |
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IMPORT_C TState State(); |
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|
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/** |
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* Returns a pointer to the current matching number. |
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* |
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* @return A ptr descriptor into the currently matching text |
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*/ |
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IMPORT_C TPtrC CurrentMatch() const; |
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|
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/** |
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* Sets the obserever of the EcsDetector |
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*/ |
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IMPORT_C void SetObserver( MAknEcsObserver* aNewObserver ); |
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|
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/** |
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* This method attaches the Ecs Detector to the current appui and the registers itself for |
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* receiving all key presses parasitically. |
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* This method is called when there is no requirement for the ECS to keep synchronized with a |
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* visual buffer |
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* |
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* @return Success of the connection |
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*/ |
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IMPORT_C TBool ConnectToEventSource(); |
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|
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/** |
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* Closes the connection to the appui object opened by a previous call to ConnectToEventSource |
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*/ |
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IMPORT_C void CloseEventSource(); |
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|
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/** |
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* It is called whenever status is retrieved (by the client). |
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* |
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* @param aStatus It is the status of the phone. |
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*/ |
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virtual void HandlePhoneStatusL( const TInt aStatus ); |
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|
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/** |
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* Returns an index to the current character buffer where the emergency number |
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* match begins. This value is between 0 and KAknEcsMaxMatchingLength, even if |
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* there have been a large number characters input to the FIFO. Thus, it does not |
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* take account of characters that have fallen out of the FIFO. |
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* |
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* The main use case for this is to allow clients to tell if the number was matched |
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* from the beginning of the buffer (value 0). Note that for emergency numbers of |
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* length KAknEcsMaxMatchingLength will ALWAYS return 0 if there is a complete match. |
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* |
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* @return the index in the current buffer where the match starts |
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*/ |
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TInt IndexOfCurrentMatch() const; |
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|
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protected: |
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|
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/** |
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* Enumeration for the bit indices of iFlags |
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* Used for substates or state modifiers |
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*/ |
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enum TBitFlagIndices |
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{ |
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EEventSourceConnected = 0, |
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ETestMode |
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}; |
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|
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/** |
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* C++ constructor |
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*/ |
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IMPORT_C CAknEcsDetector(); // Use NewL to construct |
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|
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/** |
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* 2nd stage construction. All memory allocation is performed in this routine |
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*/ |
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IMPORT_C void ConstructL(); // Use NewL to construct |
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|
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/** |
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* Calls the observer |
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*/ |
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IMPORT_C virtual void ReportEvent( TState aNewState ); |
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/** |
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* Internal routine to set the state |
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*/ |
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IMPORT_C void SetState( TState newState ); |
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|
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/** |
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* Framework method that may be re-implemented in order to perform some check or put up UI |
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* before the phone call is made |
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* Implementation must not leave; |
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* |
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* @return Whether or not to continue with the emergency call |
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*/ |
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IMPORT_C virtual TBool OfferEmergencyCall(); |
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|
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/** |
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* Static method that can be used as a cancel callback to the detector |
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* |
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* @return Integer return for CPeriodic callbacks; 1 to continue periodic callbacks |
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*/ |
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static TInt CancelMatch( TAny* aAny ); |
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private: |
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/** |
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* Utility routine to determine the new state of the module. |
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*/ |
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void DetermineState(); |
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/** |
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* Wraps up the code to capture whatever keys are necessary when the emergency number |
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*/ |
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void CaptureKeys(); |
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/** |
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* Uncaptures Send key (if necessary) |
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*/ |
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void RelinquishCapturedKeys(); |
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/** |
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* Wraps up the code that acutally sets off the emergency call |
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*/ |
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void AttemptEmergencyCall(); |
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/** |
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* Wraps up the code that actually initiates the service call |
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*/ |
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void MakeServiceCallL(); |
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0
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public: |
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/** |
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* This callback is called by a CIdle object to state that the call has been |
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* attempted. This is called outside the event loop in order allow self-deletion of the |
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* client object. |
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* |
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* State is set to CallAttempted by this method. |
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* |
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* @param aSelf |
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*/ |
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static TInt CallAttemptedCallback(TAny* aSelf); |
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private: |
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// Constituent object: the character queue |
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CAknMatchingCharacterQueue* iQueue; |
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|
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// Internal state of the detector |
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TState iState; |
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|
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TBuf<KAknEcsMaxMatchingLength> iSpare_3; |
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|
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// Timer for match timeout |
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CPeriodic* iKeyTimeoutTimer; |
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|
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// The observer |
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MAknEcsObserver* iObserver; |
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|
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// A reference to the control environment |
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CCoeEnv* iCoeEnv; |
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// Flags |
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TBitFlags16 iFlags; |
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|
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// To hold a captured key handle |
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TInt iCapturedKey; |
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|
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/** Phone client interface of emergency call. */ |
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CPhCltEmergencyCall* iPhCltEmergencyCall; |
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|
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// Idle object for causing a delayed call attempted state |
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CIdle* iIdler; |
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|
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/** Pointer to emergency call observer object */ |
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CPhCltEmergencyCallObserver* iEmergencyCallObserver; |
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/** Boolean to check if service call is enabled during device or key lock */ |
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TBool iServiceCallEnabled; |
0
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}; |
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// |
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// MAknEcsObserver |
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// |
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// This interface is used to handle changes in state of the Emergency call detector. |
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// |
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// |
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class MAknEcsObserver |
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{ |
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public: |
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/** |
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* This event handler method provides a pointer to the detector and gives its state. |
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* It is called at least every changed of state. It may be called repeatedly on the same state |
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*/ |
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virtual void HandleEcsEvent(CAknEcsDetector* aDetector, CAknEcsDetector::TState aUpdatedState) = 0; |
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}; |
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#endif // __AKNECS_H__ |