author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 27 Apr 2010 17:34:42 +0300 | |
branch | RCL_3 |
changeset 9 | 3ac8bf5c5014 |
parent 0 | 15bf7259bb7c |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2006 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: Array for brushes |
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* |
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*/ |
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#include "alf/alfbrusharray.h" |
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#include "alf/alfvisual.h" |
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#include "alf/alfenv.h" |
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#include "alfclient.h" |
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#include "alf/alfbrush.h" |
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#include "alflogger.h" |
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#include "alf/alfgencomponent.h" |
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#include "alf/alfconstants.h" |
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#include <uiacceltk/HuiUtil.h> |
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/** |
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* This watcher is a helper class to detect misusages of the brush arrays. |
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* |
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* A classic example is that the user creates a brush which is deleted before |
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* it is removed from all the arrays where it is added. |
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* |
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* This idle-loop is started when the system notices when a brush is deleted which |
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* is still in this array. This is only acceptable if the owning visual is deleted |
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* in the same scheduler loop. See the CAlfBrushArrayUsageWatcher::RunL |
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* for the result if the array is not deleted right away. |
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*/ |
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NONSHARABLE_CLASS(CAlfBrushArrayUsageWatcher) : public CActive |
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{ |
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public: |
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CAlfBrushArrayUsageWatcher(); |
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~CAlfBrushArrayUsageWatcher(); |
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protected: |
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void RunL(); |
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void DoCancel(){}; |
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}; |
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// Constructor, which initiates the idle-loop |
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CAlfBrushArrayUsageWatcher::CAlfBrushArrayUsageWatcher() : CActive( EPriorityIdle ) |
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{ |
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CActiveScheduler::Add( this ); |
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SetActive(); |
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iStatus = KRequestPending; |
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TRequestStatus* status = &iStatus; |
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User::RequestComplete( status, KErrNone ); |
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} |
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// destructor which cancels the loop |
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CAlfBrushArrayUsageWatcher::~CAlfBrushArrayUsageWatcher() |
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{ |
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Cancel(); |
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} |
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// RunL is called when the idle-loop is executed. |
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void CAlfBrushArrayUsageWatcher::RunL() |
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{ |
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// In normal usage, this code snippet should never ne run. |
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// This is called, when a user deletes a brush (directly or through a brush array) |
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// which is still left in this brush array. |
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__ALFLOGSTRING( "CAlfBrushArrayUsageWatcher::RunL Incorrect brush deletion!" ) |
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#ifdef _DEBUG |
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USER_INVARIANT(); |
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#endif |
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User::Leave( KErrGeneral ); |
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} |
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// Private data structure. |
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struct CAlfBrushArray::TPrivateData |
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{ |
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CAlfVisual* iOwner; |
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RPointerArray<CAlfBrush> iBrushes; |
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RPointerArray<CAlfBrush> iOwnedBrushes; |
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CAlfBrushArrayUsageWatcher* iWatcher; |
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}; |
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// ======== MEMBER FUNCTIONS ======== |
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// --------------------------------------------------------------------------- |
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// Constructor. |
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// --------------------------------------------------------------------------- |
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// |
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CAlfBrushArray::CAlfBrushArray() |
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{ |
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} |
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// --------------------------------------------------------------------------- |
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// 2nd phase constructor |
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// --------------------------------------------------------------------------- |
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// |
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void CAlfBrushArray::ConstructL(CAlfVisual& aOwner) |
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109 |
{ |
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iData = new (ELeave) TPrivateData; |
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111 |
|
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iData->iOwner = &aOwner; |
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iData->iOwnedBrushes.Reset(); |
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iData->iBrushes.Reset(); |
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iData->iWatcher = NULL; |
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} |
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117 |
|
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118 |
|
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// --------------------------------------------------------------------------- |
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// Two-phased constructor. |
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// --------------------------------------------------------------------------- |
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// |
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CAlfBrushArray* CAlfBrushArray::NewL(CAlfVisual& aOwner) |
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{ |
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CAlfBrushArray* self = new( ELeave ) CAlfBrushArray; |
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CleanupStack::PushL( self ); |
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self->ConstructL(aOwner); |
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CleanupStack::Pop( self ); |
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return self; |
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} |
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131 |
|
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132 |
|
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// --------------------------------------------------------------------------- |
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// Destructor. |
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// --------------------------------------------------------------------------- |
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// |
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CAlfBrushArray::~CAlfBrushArray() |
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{ |
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if ( iData ) |
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{ |
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Reset(); |
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} |
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delete iData; |
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iData = NULL; |
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} |
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146 |
|
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// --------------------------------------------------------------------------- |
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// Resets the array. |
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// --------------------------------------------------------------------------- |
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// |
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EXPORT_C void CAlfBrushArray::Reset() |
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{ |
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for ( TInt i = iData->iBrushes.Count()-1 ; i>= 0; i-- ) |
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{ |
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iData->iBrushes[i]->RemoveContainingArray( *this ); |
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} |
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157 |
|
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iData->iOwnedBrushes.ResetAndDestroy(); |
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iData->iBrushes.Reset(); |
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|
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delete iData->iWatcher; |
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iData->iWatcher= NULL; |
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|
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// Update the server side. |
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TBuf8<1> dummy; |
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TInt err = iData->iOwner->Comms()->DoSynchronousCmd(EAlfVisualBrushArrayReset, KNullDesC8(), dummy); |
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|
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if ( err ) |
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{ |
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__ALFLOGSTRING1( "CAlfBrushArray::Reset panic error %d", err ) |
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USER_INVARIANT(); |
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} |
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|
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} |
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|
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// --------------------------------------------------------------------------- |
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// Add brush onto the array. |
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// --------------------------------------------------------------------------- |
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// |
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EXPORT_C void CAlfBrushArray::AppendL(CAlfBrush* aBrush, TAlfOwnership aOwnership) |
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{ |
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// Add to iBrushes array. |
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TInt err = iData->iBrushes.Append( aBrush ); |
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if ( err != KErrNone ) |
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{ |
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// on failure, log'n'leave |
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__ALFLOGSTRING1( "CAlfBrushArray::AppendL leave error %d", err ) |
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User::Leave( err ); |
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} |
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|
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err = aBrush->AppendContainingArray( *this ); |
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if ( err != KErrNone ) |
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{ |
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// on failure remove from iBrushes, log'n'leave |
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iData->iBrushes.Remove( iData->iBrushes.Count() - 1 ); |
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iData->iBrushes.Compress(); |
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__ALFLOGSTRING1( "CAlfBrushArray::AppendL leave error %d", err ) |
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User::Leave( err ); |
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} |
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200 |
|
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// Update the server side. |
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TInt2 int2(aBrush->Identifier(), aOwnership); |
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TPckgC<TInt2> buf(int2); |
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TBuf8<1> dum; |
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|
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err = iData->iOwner->Comms()->DoSynchronousCmd(EAlfVisualBrushArrayAppend, buf, dum ); |
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if ( err != KErrNone ) |
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{ |
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// On error, remove it from the iBrushes and log'n'leave |
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RemoveBrush(aBrush, iData->iBrushes.Count() - 1); |
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211 |
|
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__ALFLOGSTRING1( "CAlfBrushArray::AppendL leave error %d", err ) |
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User::Leave(err); |
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} |
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// append ownership only on success (otherwise double deletion takes place on leave) |
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if ( aOwnership == EAlfHasOwnership ) |
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{ |
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err = iData->iOwnedBrushes.Append( aBrush ); |
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if ( err != KErrNone ) |
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{ |
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// on failure remove brush (inform server as well) and log'n'leave |
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Remove( iData->iBrushes.Count() - 1); |
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__ALFLOGSTRING1( "CAlfBrushArray::AppendL leave error %d", err ) |
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User::Leave( err ); |
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} |
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} |
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} |
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|
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// --------------------------------------------------------------------------- |
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// Insert |
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// --------------------------------------------------------------------------- |
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// |
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EXPORT_C void CAlfBrushArray::InsertL(TInt aPos, CAlfBrush* aBrush, TAlfOwnership aOwnership) |
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{ |
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// Add to iBrushes array. |
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TInt err = iData->iBrushes.Insert( aBrush, aPos ); |
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if ( err != KErrNone ) |
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{ |
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// on failure, log'n'leave |
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__ALFLOGSTRING1( "CAlfBrushArray::InsertL leave error %d", err ) |
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User::Leave( err ); |
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} |
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243 |
|
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err = aBrush->AppendContainingArray( *this ); |
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if ( err != KErrNone ) |
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{ |
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// on failure remove from iBrushes, log'n'leave |
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iData->iBrushes.Remove( aPos ); |
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iData->iBrushes.Compress(); |
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__ALFLOGSTRING1( "CAlfBrushArray::InsertL leave error %d", err ) |
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User::Leave( err ); |
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252 |
} |
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253 |
|
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// Update the server side. |
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TInt3 int3(aBrush->Identifier(), aOwnership, aPos); |
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TPckgC<TInt3> buf(int3); |
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TBuf8<1> dum; |
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258 |
|
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err = iData->iOwner->Comms()->DoSynchronousCmd(EAlfVisualBrushArrayInsert, buf, dum ); |
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if ( err != KErrNone ) |
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261 |
{ |
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// On error, remove it from the iBrushes and log'n'leave |
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RemoveBrush(aBrush, aPos); |
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264 |
|
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__ALFLOGSTRING1( "CAlfBrushArray::InsertL leave error %d", err ) |
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User::Leave(err); |
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} |
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|
268 |
|
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// append ownership only on success (otherwise double deletion takes place on leave) |
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if ( aOwnership == EAlfHasOwnership ) |
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271 |
{ |
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err = iData->iOwnedBrushes.Append( aBrush ); |
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if ( err != KErrNone ) |
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|
274 |
{ |
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275 |
// on failure remove brush (inform server as well) and log'n'leave |
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Remove( aPos ); |
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|
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__ALFLOGSTRING1( "CAlfBrushArray::InsertL leave error %d", err ) |
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User::Leave( err ); |
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|
279 |
} |
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280 |
} |
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|
281 |
} |
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|
282 |
|
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|
283 |
// --------------------------------------------------------------------------- |
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// Remove |
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// --------------------------------------------------------------------------- |
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// |
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EXPORT_C void CAlfBrushArray::Remove(TInt aPos) |
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{ |
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|
289 |
// Update the server side. |
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TPckgC<TInt> buf(aPos); |
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|
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TBuf8<1> dum; |
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|
292 |
|
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TInt err = iData->iOwner->Comms()->DoSynchronousCmd(EAlfVisualBrushArrayRemove, buf, dum ); |
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|
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if ( err ) |
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295 |
{ |
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|
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__ALFLOGSTRING1( "CAlfBrushArray::Remove panic error %d", err ) |
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|
297 |
USER_INVARIANT(); |
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298 |
} |
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|
299 |
|
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|
300 |
RemoveBrush(iData->iBrushes[aPos], aPos); |
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|
301 |
} |
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|
302 |
|
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|
303 |
// --------------------------------------------------------------------------- |
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|
304 |
// Brush count |
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|
305 |
// --------------------------------------------------------------------------- |
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306 |
// |
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307 |
EXPORT_C TInt CAlfBrushArray::Count() const |
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308 |
{ |
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if ( iData ) |
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{ |
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311 |
return iData->iBrushes.Count(); |
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312 |
} |
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return 0; |
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314 |
} |
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diff
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|
315 |
|
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316 |
// --------------------------------------------------------------------------- |
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// [] |
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// --------------------------------------------------------------------------- |
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// |
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EXPORT_C CAlfBrush& CAlfBrushArray::operator [] (TInt aPos) |
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{ |
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return At(aPos); |
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} |
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// --------------------------------------------------------------------------- |
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// At |
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// --------------------------------------------------------------------------- |
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// |
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EXPORT_C CAlfBrush& CAlfBrushArray::At(TInt aPos) |
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{ |
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return *iData->iBrushes[aPos]; |
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} |
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|
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// --------------------------------------------------------------------------- |
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// Remove brush and owned brushes if they exist |
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// --------------------------------------------------------------------------- |
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// |
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void CAlfBrushArray::RemoveBrush(CAlfBrush* aBrush, TInt aPosIndex) |
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{ |
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aBrush->RemoveContainingArray( *this ); |
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|
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const TInt ownedIndex = iData->iOwnedBrushes.Find( aBrush ); |
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if ( ownedIndex != KErrNotFound ) |
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{ |
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iData->iOwnedBrushes.Remove( ownedIndex ); |
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iData->iOwnedBrushes.Compress(); |
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delete aBrush; |
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} |
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|
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if ( aPosIndex != KErrNotFound ) |
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{ |
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iData->iBrushes.Remove( aPosIndex ); |
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iData->iBrushes.Compress(); |
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} |
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} |
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|
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// --------------------------------------------------------------------------- |
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// Brush is been deleted. Remove it from the array (if exists - might be several times). |
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// --------------------------------------------------------------------------- |
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// |
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void CAlfBrushArray::HandleBrushDestroyed( CAlfBrush& aBrush ) |
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{ |
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for ( TInt index = Count()-1 ; index>=0 ; index-- ) |
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{ |
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if ( &At(index) == &aBrush ) |
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{ |
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// Update the server side. |
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TPckgC<TInt> buf(index); |
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TBuf8<1> dum; |
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TInt err = iData->iOwner->Comms()->DoSynchronousCmd(EAlfVisualBrushArrayRemove, buf, dum ); |
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if ( err ) |
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{ |
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__ALFLOGSTRING1( "CAlfBrushArray::HandleBrushDestroyed panic error %d", err ) |
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USER_INVARIANT(); |
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} |
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|
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// Check the owned brushes - should never found! |
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const TInt ownedIndex = iData->iOwnedBrushes.Find( &aBrush ); |
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__ASSERT_ALWAYS( ownedIndex == KErrNotFound, USER_INVARIANT() ); |
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|
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// Remove from iBrushes array |
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iData->iBrushes.Remove( index ); |
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iData->iBrushes.Compress(); |
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|
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// create watcher |
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if ( !iData->iWatcher ) |
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{ |
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// do not mind the OOM |
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iData->iWatcher = new CAlfBrushArrayUsageWatcher; |
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} |
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} |
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} |
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} |
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|
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