author | Pat Downey <patd@symbian.org> |
Wed, 01 Sep 2010 12:19:59 +0100 | |
branch | RCL_3 |
changeset 50 | 03674e5abf46 |
parent 0 | 164170e6151a |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 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: Key pattern matching component. |
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* |
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*/ |
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#ifndef __LOCKAPPKEYPATTERN__ |
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#define __LOCKAPPKEYPATTERN__ |
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// INCLUDES |
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#include <w32std.h> |
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#include <e32base.h> |
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enum TPatternState |
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{ |
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EPatternNotInitialized = 1, |
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EPatternNotEnabled, |
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EPatternNoMatch, |
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EPatternPrimaryMatch, |
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EPatternSecondaryMatch, |
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}; |
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/** |
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* CLockAppKeyPattern class implements a 2-key pattern matcher. |
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* Can be used for both iCodes and iScancodes, as it matches integer numbers. |
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* The caller's responsability is to make sense what is beeing matched. |
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* Multiple patterns can be defined. |
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* |
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* @lib lockapp |
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* @since 5.0 |
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* @author Tamas Koteles |
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*/ |
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class CLockAppKeyPattern : public CBase |
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{ |
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public: |
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/** |
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* Two phased constructor. |
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*/ |
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static CLockAppKeyPattern* NewL( ); |
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/** |
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* Destructor. |
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*/ |
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~CLockAppKeyPattern( ); |
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/** |
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* If no patterns have been defined it cannot be used. |
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* @return ETrue if has succesfully loaded policy |
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*/ |
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TBool HasPatterns( ); |
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/** |
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* Gets the enabled state. |
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* |
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* @return true if the patterns are enabled, false othewise |
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*/ |
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TBool IsEnabled( ); |
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/** |
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* Sets the enabled state. |
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*/ |
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void SetEnabled( TBool aEnabled ); |
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/** |
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* Gets the primary key timeout. |
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* |
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* @return the timeout in miliseconds |
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*/ |
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TUint GetKeyTimeOut( ); |
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/** |
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* Sets the primary key timeout. |
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* |
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*/ |
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void SetKeyTimeOut( TUint aTimeOut ); |
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/** |
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* Adds a key combination. |
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* |
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* @param aPrimaryKey code for primary key |
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* @param aSecondaryKey code for secondary key |
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* @return standard Symbian error code |
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*/ |
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TInt AddPattern( TUint32 aPrimaryKey, TUint32 aSecondaryKey ); |
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/** |
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* Gets a key combination. |
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* |
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* @param aIndex index of the key combination |
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* @param aPrimaryKey primary key code if found |
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* @param aSecondaryKey secondary key code if found |
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* @return standard Symbian error code |
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*/ |
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TInt GetPattern( TInt aIndex, TUint32& aPrimaryKey, TUint32& aSecondaryKey ); |
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/** |
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* Clears all the defined key combinations. |
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* |
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* @return standard Symbian error code |
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*/ |
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TInt ClearPatterns( ); |
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/** |
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* Handles Key events. Result of the event is returned in the pattern state. |
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* |
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* @param aKey the actual key event (code or scancode) |
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* @return TPatternState caused by the event. |
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*/ |
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TPatternState HandleKeyEvent( TUint32 aKey ); |
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protected: |
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/** |
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* C++ default constructor (private so cannot be derived). |
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*/ |
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CLockAppKeyPattern( ); |
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/** |
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* Second constructor initializes the policy |
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*/ |
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void ConstructL( ); |
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private: |
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/** |
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* A primary key has been received, set primary-match state. |
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*/ |
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void HandlePrimaryKeyEvent( TUint32 aKey ); |
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/** |
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* A secondary key has been received, set secondary-match state. |
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*/ |
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void HandleSecondaryKeyEvent( ); |
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/** |
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* Any other key has been received, set no-match state. |
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*/ |
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void HandleOtherKeyEvent( ); |
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/** |
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* A call back to the keylock timer |
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* param TAny aSelf a pointer to the parent class |
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*/ |
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static TInt HandleKeyTimerTimeout( TAny* aSelf ); |
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private: |
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// defined configurations |
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RArray<TUint> iPrimaryKeys; |
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RArray<TUint> iSecondaryKeys; |
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RArray<TUint> iWaitingKeys; |
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// defined timeout |
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TUint iKeyTimeOut; |
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// first key pressed |
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TPatternState iState; |
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// if the keypatterns are enabled |
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TBool iEnabled; |
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// if the keylock policy exists |
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TBool iHasPatterns; |
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// timer used between primary and secondary keys |
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CPeriodic* iKeyTimer; |
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}; |
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#endif // __LOCKAPPKEYPATTERN__ |