--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/idlehomescreen/widgetmanager/src/wmwidgetloaderao.cpp Thu Jan 07 12:39:41 2010 +0200
@@ -0,0 +1,271 @@
+/*
+* Copyright (c) 2009 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:
+* Active object to load widgets into list
+*
+*/
+
+// INCLUDE FILES
+#include "wmcommon.h"
+#include "wmplugin.h"
+#include "wmresourceloader.h"
+#include "wmpersistentwidgetorder.h"
+#include "wmlistbox.h"
+#include "wmwidgetloaderao.h"
+
+#include <hscontentcontroller.h> // content control api
+#include <hscontentinfoarray.h> // content control api
+#include <widgetregistryclient.h> // widget reqistry
+#include <avkon.rsg> // avkon resources
+#include <barsread.h> // TResourceReader
+
+// ---------------------------------------------------------------------------
+// CWmWidgetLoaderAo::NewL
+// ---------------------------------------------------------------------------
+//
+CWmWidgetLoaderAo* CWmWidgetLoaderAo::NewL(
+ CWmPlugin& aWmPlugin,
+ CWmListBox& aTargetList )
+ {
+ CWmWidgetLoaderAo* self = new (ELeave) CWmWidgetLoaderAo(
+ aWmPlugin, aTargetList );
+ CleanupStack::PushL( self );
+ self->ConstructL();
+ CleanupStack::Pop( self );
+ return self;
+ }
+
+// ---------------------------------------------------------------------------
+// CWmWidgetLoaderAo::NewL
+// ---------------------------------------------------------------------------
+//
+CWmWidgetLoaderAo::CWmWidgetLoaderAo(
+ CWmPlugin& aWmPlugin,
+ CWmListBox& aTargetList )
+ : CAsyncOneShot( EPriorityStandard )
+ , iWmPlugin( aWmPlugin )
+ , iWidgetsList( aTargetList )
+ {
+ iWidgetRegistry = NULL;
+ iWidgetOrder = NULL;
+ }
+
+// ---------------------------------------------------------------------------
+// CWmWidgetLoaderAo::ConstructL
+// ---------------------------------------------------------------------------
+//
+void CWmWidgetLoaderAo::ConstructL()
+ {
+ }
+
+// ---------------------------------------------------------------------------
+// CWmWidgetLoaderAo::~CWmWidgetLoaderAo
+// ---------------------------------------------------------------------------
+//
+CWmWidgetLoaderAo::~CWmWidgetLoaderAo()
+ {
+ // cancel ongoing operation
+ Cancel();
+
+ // cleanup run data
+ Cleanup();
+
+ }
+
+// ---------------------------------------------------------------------------
+// CWmWidgetLoaderAo::StartLoading
+// ---------------------------------------------------------------------------
+//
+void CWmWidgetLoaderAo::StartLoading()
+ {
+ if ( IsActive() )
+ {
+ // cancel ongoing process
+ Cancel();
+ }
+ Call();
+ }
+
+// ---------------------------------------------------------------------------
+// CWmWidgetLoaderAo::RunL
+// ---------------------------------------------------------------------------
+//
+void CWmWidgetLoaderAo::RunL()
+ {
+ DoLoadWidgetsL();
+ Cleanup();
+ }
+
+// ---------------------------------------------------------------------------
+// CWmWidgetLoaderAo::RunError
+// ---------------------------------------------------------------------------
+//
+TInt CWmWidgetLoaderAo::RunError( TInt /*aError*/ )
+ {
+ Cleanup();
+ return KErrNone;
+ }
+
+// ---------------------------------------------------------
+// CWmWidgetLoaderAo::DoLoadWidgetsL
+// ---------------------------------------------------------
+//
+void CWmWidgetLoaderAo::DoLoadWidgetsL()
+ {
+ // 1. mark all the existing widgets initially non-valid
+ for( TInt i=0; i<iWidgetsList.WidgetDataCount(); ++i )
+ iWidgetsList.WidgetData(i).SetValid( EFalse );
+
+ // 2. load the widgets array
+ MHsContentController& controller = iWmPlugin.ContentController();
+ CHsContentInfoArray* contentInfoArray = CHsContentInfoArray::NewL();
+ CleanupStack::PushL( contentInfoArray );
+ controller.WidgetListL( *contentInfoArray );
+
+ // 3. load the widget order
+ iWidgetOrder = CWmPersistentWidgetOrder::NewL( iWmPlugin.FileServer() );
+ TRAPD( loadError, iWidgetOrder->LoadL() );
+
+ // 4. loop through the content array and compare it against the existing
+ // widget data.
+ TInt widgetsAdded = 0;
+ TInt widgetsChanged = 0;
+ while( contentInfoArray->Array().Count() > 0 )
+ {
+ CHsContentInfo* contentInfo = contentInfoArray->Array()[0];
+ contentInfoArray->Array().Remove( 0 );
+
+ // check if this widget exists.
+ // if it does, keep the existing one
+ // if it does not, add it
+ CWmWidgetData* existingData = FindWidgetData( *contentInfo );
+ if ( existingData )
+ {
+ // update existing widget data
+ existingData->SetValid( ETrue );
+ if ( existingData->ReplaceContentInfoL( contentInfo ) )
+ {
+ ++widgetsChanged;
+ }
+ }
+ else
+ {
+ // add a new widget data
+ AddWidgetDataL( contentInfo );
+ ++widgetsAdded;
+ }
+ }
+
+ // 5: finally, remove all UI widgets that during the loading process were
+ // NOT marked as VALID. those widgets do not exist anymore.
+ TInt widgetsRemoved = 0;
+ for( TInt i=0; i<iWidgetsList.WidgetDataCount(); i++ )
+ {
+ if( !iWidgetsList.WidgetData(i).IsValid() )
+ {
+ iWidgetsList.RemoveWidgetData( i );
+ ++widgetsRemoved;
+ }
+ }
+ if ( widgetsRemoved > 0 )
+ {
+ iWidgetsList.DrawDeferred();
+ }
+
+ // 6: cleanup
+ CleanupStack::PopAndDestroy( contentInfoArray );
+
+ // 7. check list empty condition
+ if ( iWidgetsList.WidgetDataCount() == 0 )
+ {
+ TResourceReader rr;
+ CEikonEnv::Static()->CreateResourceReaderLC(
+ rr, R_AVKON_LISTBOX_DEFAULT_EMPTY_TEXT );
+ TPtrC empty= rr.ReadTPtrC();
+ iWidgetsList.View()->SetListEmptyTextL( empty );
+ CleanupStack::PopAndDestroy();
+ iWidgetsList.DrawDeferred();
+ }
+
+ // 8. store list order if necessary
+ if ( loadError != KErrNone || widgetsAdded > 0 || widgetsRemoved > 0 )
+ {
+ iWidgetOrder->StoreL( iWidgetsList.WidgetDataArray() );
+ }
+
+ }
+
+// ---------------------------------------------------------
+// CWmWidgetLoaderAo::FindWidgetDataL
+// ---------------------------------------------------------
+//
+CWmWidgetData* CWmWidgetLoaderAo::FindWidgetData(
+ CHsContentInfo& aContentInfo )
+ {
+ CWmWidgetData* data = NULL;
+ for( TInt i=0; i<iWidgetsList.WidgetDataCount() && !data; ++i )
+ {
+ if ( iWidgetsList.WidgetData(i).EqualsTo( aContentInfo ) )
+ {
+ data = &iWidgetsList.WidgetData(i);
+ }
+ }
+ return data;
+ }
+
+// ---------------------------------------------------------
+// CWmWidgetLoaderAo::AddWidgetDataL
+// ---------------------------------------------------------
+//
+void CWmWidgetLoaderAo::AddWidgetDataL(
+ CHsContentInfo* aContentInfo )
+ {
+ CleanupStack::PushL( aContentInfo );
+ if ( !iWidgetRegistry )
+ {
+ iWidgetRegistry = new (ELeave) RWidgetRegistryClientSession();
+ User::LeaveIfError( iWidgetRegistry->Connect() );
+ }
+ CleanupStack::Pop( aContentInfo );
+
+ CWmWidgetData* widgetData = CWmWidgetData::NewLC(
+ aContentInfo, iWidgetRegistry );
+ widgetData->SetPersistentWidgetOrder( iWidgetOrder );
+ widgetData->SetValid( ETrue );
+ iWidgetsList.AddWidgetDataL( widgetData );
+ CleanupStack::Pop( widgetData );
+ }
+
+// ---------------------------------------------------------------------------
+// CWmWidgetLoaderAo::Cleanup
+// ---------------------------------------------------------------------------
+//
+void CWmWidgetLoaderAo::Cleanup()
+ {
+ // disconnect widget registry
+ if ( iWidgetRegistry )
+ {
+ iWidgetRegistry->Disconnect();
+ iWidgetRegistry->Close();
+ delete iWidgetRegistry;
+ iWidgetRegistry = NULL;
+ }
+
+ // delete widget order
+ delete iWidgetOrder;
+ iWidgetOrder = NULL;
+ }
+
+// end of file
+