author | Pat Downey <patrick.downey@nokia.com> |
Thu, 25 Jun 2009 15:59:54 +0100 | |
changeset 1 | 0a7b44b10206 |
child 2 | 806186ab5e14 |
permissions | -rw-r--r-- |
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// Copyright (c) 2002-2009 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 the License "Symbian Foundation License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.symbianfoundation.org/legal/sfl-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: |
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// e32\include\e32property.h |
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// |
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// |
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#ifndef __E32PROPERTY_H__ |
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#define __E32PROPERTY_H__ |
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#include <e32cmn.h> |
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/** |
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@publishedAll |
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@released |
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Property category UID value reserved for System services. |
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*/ |
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static const TInt32 KUidSystemCategoryValue=0x101f75b6; |
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/** |
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@publishedAll |
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@released |
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Property category UID reserved for System services |
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*/ |
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static const TUid KUidSystemCategory={KUidSystemCategoryValue}; |
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/** |
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@publishedAll |
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@released |
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The lowest value for Property categories at which additional |
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security restrictions are applied when defining properties. |
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Properties with category values above this threshold may only be defined |
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if the category matches the defining process's Secure ID. |
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Below this threashold, properties may be defined either by processes with |
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a matching Secure ID, or by processes with the WriteDeviceData capability. |
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*/ |
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static const TInt32 KUidSecurityThresholdCategoryValue=0x10273357; |
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/** |
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@publishedAll |
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@released |
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User side interface to Publish & Subscribe. |
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The class defines a handle to a property, a single data value representing |
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an item of state information. Threads can publish (change) a property value |
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through this handle. Threads can also subscribe |
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(request notification of changes) to a property value through this handle; |
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they can also retrieve the current property value. |
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*/ |
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class RProperty : public RHandleBase |
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{ |
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public: |
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/** |
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The largest supported property value, in bytes, for byte-array (binary) |
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types and text types. |
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*/ |
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enum { KMaxPropertySize = 512 }; |
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/** |
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The largest supported property value, in bytes, for large byte-array (binary) |
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types and large text types. |
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*/ |
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enum { KMaxLargePropertySize = 65535 }; |
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/** |
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Property type attribute. |
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*/ |
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enum TType |
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{ |
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/** |
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Integral property type. |
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*/ |
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EInt, |
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/** |
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Byte-array (binary data) property type. |
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This type provides real-time guarantees but is limited to a maximum size |
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of 512 bytes. |
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@see KMaxPropertySize |
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*/ |
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EByteArray, |
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/** |
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Text property type. |
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This is just a programmer friendly view of a byte-array property, and |
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is implemented in the same way as EByteArray. |
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*/ |
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EText = EByteArray, |
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/** |
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Large byte-array (binary data) property type. |
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This type provides no real-time guarantees but supports properties |
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of up to 65536 bytes. |
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@see KMaxLargePropertySize |
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*/ |
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ELargeByteArray, |
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/** |
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Large text property type. |
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This is just a programmer friendly view of a byte-array property, and |
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is implemented in the same way as EByteArray. |
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*/ |
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ELargeText = ELargeByteArray, |
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/** |
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Upper limit for TType values. |
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It is the maximal legal TType value plus 1. |
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*/ |
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ETypeLimit, |
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/** |
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Bitmask for TType values coded within TInt attributes. |
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*/ |
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ETypeMask = 0xff |
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}; |
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public: |
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IMPORT_C static TInt Define(TUid aCategory, TUint aKey, TInt aAttr, TInt aPreallocate=0); |
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IMPORT_C static TInt Define(TUid aCategory, TUint aKey, TInt aAttr, const TSecurityPolicy& aReadPolicy, const TSecurityPolicy& aWritePolicy, TInt aPreallocated=0); |
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IMPORT_C static TInt Define(TUint aKey, TInt aAttr, const TSecurityPolicy& aReadPolicy, const TSecurityPolicy& aWritePolicy, TInt aPreallocated=0); |
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IMPORT_C static TInt Delete(TUid aCategory, TUint aKey); |
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IMPORT_C static TInt Delete(TUint aKey); |
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IMPORT_C static TInt Get(TUid aCategory, TUint aKey, TInt& aValue); |
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IMPORT_C static TInt Get(TUid aCategory, TUint aKey, TDes8& aValue); |
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#ifndef __KERNEL_MODE__ |
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IMPORT_C static TInt Get(TUid aCategory, TUint aKey, TDes16& aValue); |
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#endif |
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IMPORT_C static TInt Set(TUid aCategory, TUint aKey, TInt aValue); |
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IMPORT_C static TInt Set(TUid aCategory, TUint aKey, const TDesC8& aValue); |
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#ifndef __KERNEL_MODE__ |
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IMPORT_C static TInt Set(TUid aCategory, TUint aKey, const TDesC16& aValue); |
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#endif |
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IMPORT_C TInt Attach(TUid aCategory, TUint aKey, TOwnerType aType = EOwnerProcess); |
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IMPORT_C void Subscribe(TRequestStatus& aRequest); |
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IMPORT_C void Cancel(); |
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IMPORT_C TInt Get(TInt& aValue); |
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IMPORT_C TInt Get(TDes8& aValue); |
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#ifndef __KERNEL_MODE__ |
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IMPORT_C TInt Get(TDes16& aValue); |
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#endif |
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IMPORT_C TInt Set(TInt aValue); |
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IMPORT_C TInt Set(const TDesC8& aValue); |
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#ifndef __KERNEL_MODE__ |
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IMPORT_C TInt Set(const TDesC16& aValue); |
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#endif |
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}; |
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#endif |