--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/extras/about/src/AboutResourceLoader.cpp Tue Sep 14 21:21:28 2010 +0300
@@ -0,0 +1,320 @@
+/*
+* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0""
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: Resource loader for About in order to asynchronous load resource.
+*
+*/
+
+#include "AboutResourceLoader.h"
+#include "MResourceLoaderObserver.h" // For MResourceLoaderObserver
+#include "AboutResource.h" // For CAboutResource
+#include <StringLoader.h> // For StringLoader
+#include <coneresloader.h> // For RConeResourceLoader
+#include <eikenv.h> // For CEikonEnv
+#include <StringLoader.h> // For StringLoader
+#include <f32file.h>
+#include <BAUTILS.H>
+
+// CONSTANTS
+const TInt KDefaultResourceId( -1 ); // Default resource id.
+// The count for the resouce that to be loaded in one time.
+const TInt KDefaultItemLoadingCount( 10 );
+
+// ---------------------------------------------------------
+// CAboutResourceLoader::CAboutResourceLoader()
+//
+// ---------------------------------------------------------
+CAboutResourceLoader::CAboutResourceLoader( CEikonEnv* aEikonEnv,
+ MResourceLoaderObserver* aObserver )
+ : CActive( EPriorityLow ),
+ iEnv( aEikonEnv ),
+ iResourceId( KDefaultResourceId ),
+ iObserver( aObserver )
+ {
+
+ }
+
+// ---------------------------------------------------------
+// CAboutResourceLoader::NewLC()
+//
+// ---------------------------------------------------------
+CAboutResourceLoader* CAboutResourceLoader::NewLC( CEikonEnv* aEikonEnv,
+ MResourceLoaderObserver* aObserver )
+ {
+ CAboutResourceLoader* self = new ( ELeave ) CAboutResourceLoader(
+ aEikonEnv, aObserver );
+ CleanupStack::PushL(self);
+ self->ConstructL();
+ return self;
+ }
+
+// ---------------------------------------------------------
+// CAboutResourceLoader::NewL()
+//
+// ---------------------------------------------------------
+CAboutResourceLoader* CAboutResourceLoader::NewL( CEikonEnv* aEikonEnv,
+ MResourceLoaderObserver* aObserver )
+ {
+ CAboutResourceLoader* self = CAboutResourceLoader::NewLC(
+ aEikonEnv, aObserver );
+ CleanupStack::Pop(); // self;
+ return self;
+ }
+
+// ---------------------------------------------------------
+// CAboutResourceLoader::ConstructL()
+//
+// ---------------------------------------------------------
+void CAboutResourceLoader::ConstructL()
+ {
+ CActiveScheduler::Add(this); // Add to scheduler
+ iLoadedItem = new(ELeave) RPointerArray<CAboutResource>();
+ iLoader = new(ELeave) RConeResourceLoader( *iEnv );
+ }
+
+// ---------------------------------------------------------
+// CAboutResourceLoader::CAboutResourceLoader()
+//
+// ---------------------------------------------------------
+CAboutResourceLoader::~CAboutResourceLoader()
+ {
+ Cancel(); // Cancel any request, if outstanding
+ if ( iLoadedItem )
+ {
+ iLoadedItem->ResetAndDestroy();
+ delete iLoadedItem;
+ iLoadedItem = NULL;
+ }
+ if ( iResourceBuffer )
+ {
+ delete iResourceBuffer;
+ iResourceBuffer = NULL;
+ }
+ if ( iLoader )
+ {
+ iLoader->Close();
+ delete iLoader;
+ iLoader = NULL;
+ }
+ }
+
+// ---------------------------------------------------------
+// CAboutResourceLoader::DoCancel()
+//
+// ---------------------------------------------------------
+void CAboutResourceLoader::DoCancel()
+ {
+ iItemIterator = 0;
+ // Delete the resource buffer.
+ if ( iResourceBuffer )
+ {
+ delete iResourceBuffer;
+ iResourceBuffer = NULL;
+ }
+
+ if ( iLoader )
+ {
+ iLoader->Close();
+ }
+ }
+
+// ---------------------------------------------------------
+// CAboutResourceLoader::StartL()
+//
+// ---------------------------------------------------------
+void CAboutResourceLoader::StartL()
+ {
+ // Leave with KErrGeneral if the resource id is not set.
+ if ( iResourceId == KDefaultResourceId )
+ {
+ User::Leave( KErrGeneral );
+ }
+
+ Cancel();
+
+ iItemIterator = 0;
+ ReleaseLoadedItems();
+
+ if ( !iLoaded )
+ {
+ // Init the rsc file path
+ TFileName filePath( iResourcePath );
+ BaflUtils::NearestLanguageFile( iEnv->FsSession(), filePath );
+ iLoader->Close();
+ iLoader->OpenL( filePath );
+ }
+
+ if ( iResourceBuffer )
+ {
+ delete iResourceBuffer;
+ iResourceBuffer = NULL;
+ }
+
+ iResourceBuffer = iEnv->AllocReadResourceAsDes8LC( iResourceId );
+ iReader.SetBuffer( iResourceBuffer );
+ iItemCount = iReader.ReadInt16();
+ CleanupStack::Pop(); // iResourceBuffer
+
+ Activate();
+ }
+
+// ---------------------------------------------------------
+// CAboutResourceLoader::RunL()
+//
+// ---------------------------------------------------------
+void CAboutResourceLoader::RunL()
+ {
+ TInt err = KErrNone;
+ for ( ; iItemIterator < iItemCount; iItemIterator++ )
+ {
+ CAboutResource* aboutResource = CAboutResource::NewL();
+ CleanupStack::PushL( aboutResource );
+ TInt type = iReader.ReadInt8();
+
+ // Load Text
+ if ( type == EAboutTextItem )
+ {
+ HBufC* resourceItem( NULL );
+ // There are two different text, one is direct output and another needs format
+ if ( iReader.ReadInt8() == EAboutUpdateTime )
+ {
+ // About text needs format
+ TTime time;
+ time.UniversalTime();
+ TDateTime currentTime = time.DateTime();
+ resourceItem = StringLoader::LoadLC( iReader.ReadInt32(),
+ currentTime.Year(), CEikonEnv::Static() );
+ }
+ else
+ {
+ // Direct output about text
+ resourceItem = iEnv->AllocReadResourceLC( iReader.ReadInt32() );
+ }
+ // Set the loaded item
+ aboutResource->SetResourceItem( resourceItem );
+ // Set the loaded item
+ aboutResource->SetResourceIndex( iItemIterator );
+ iLoadedItem->AppendL( aboutResource );
+ CleanupStack::Pop( 2 ); // resourceItem and aboutResource
+ }
+ // Load image.
+ else if ( type == EAboutImageItem )
+ {
+ TPtrC imageFile = iReader.ReadTPtrC();
+ aboutResource->SetResourceItem( imageFile.AllocL() );
+ aboutResource->SetBitmapId( iReader.ReadInt16() );
+ aboutResource->SetResourceType( EAboutImageItem );
+ iLoadedItem->AppendL( aboutResource );
+ CleanupStack::Pop(); // aboutResource
+ }
+ else
+ {
+ err = KErrNotSupported;
+ CleanupStack::PopAndDestroy(); // aboutResource
+ break;
+ }
+
+ // Ten items per loading and calculate the number of loaded
+ if ( ( iItemIterator % KDefaultItemLoadingCount )
+ == ( KDefaultItemLoadingCount - 1 ) )
+ {
+ // Once the value of iItemIterator > 10, we should break
+ iItemIterator++;
+ break;
+ }
+ }
+
+ // Notify observer.
+ if ( err == KErrNone && iItemIterator < iItemCount )
+ {
+ // Ten items loading over, Notify HandleItemsLoadedL observer
+ iObserver->HandleItemsLoadedL( err );
+ Activate();
+ }
+ else
+ {
+ // Once there is not enough ten items, need run this function again
+ iObserver->HandleItemsLoadedL( err );
+ // One resource loading over, Notify HandleResourceLoadCompletedL observer
+ iObserver->HandleResourceLoadCompletedL( iResourceId, err );
+ }
+ }
+
+// ---------------------------------------------------------
+// CAboutResourceLoader::RunError()
+//
+// ---------------------------------------------------------
+TInt CAboutResourceLoader::RunError( TInt aError )
+ {
+ return aError;
+ }
+
+// ---------------------------------------------------------
+// CAboutResourceLoader::Activate()
+//
+// ---------------------------------------------------------
+void CAboutResourceLoader::Activate()
+ {
+ TRequestStatus* status = &iStatus;
+ *status = KRequestPending;
+ User::RequestComplete( status, KErrNone );
+ SetActive();
+ }
+
+// ---------------------------------------------------------
+// CAboutResourceLoader::SetResourceId()
+//
+// ---------------------------------------------------------
+void CAboutResourceLoader::SetResourceId( const TInt aResourceId,
+ const TBool aLoaded, const TDesC& aResourcePath )
+ {
+ iResourceId = aResourceId;
+ iLoaded = aLoaded;
+ iResourcePath.Copy( aResourcePath );
+ }
+
+// ---------------------------------------------------------
+// CAboutResourceLoader::CurrentResourceId()
+//
+// ---------------------------------------------------------
+TInt CAboutResourceLoader::CurrentResourceId()
+ {
+ return iResourceId;
+ }
+
+// ---------------------------------------------------------
+// CAboutResourceLoader::LoadedResourceItems()
+//
+// ---------------------------------------------------------
+RPointerArray<CAboutResource>* CAboutResourceLoader::LoadedResourceItems() const
+ {
+ return iLoadedItem;
+ }
+
+// ---------------------------------------------------------
+// CAboutResourceLoader::RleaseLoadedItems()
+//
+// ---------------------------------------------------------
+void CAboutResourceLoader::ReleaseLoadedItems()
+ {
+ iLoadedItem->ResetAndDestroy();
+ }
+
+// ---------------------------------------------------------
+// CAboutResourceLoader::ItemCount()
+//
+// ---------------------------------------------------------
+TInt CAboutResourceLoader::ItemCount() const
+ {
+ return iItemCount;
+ }