locationmapnavfw/library/src/mnproviderfinder.cpp
changeset 0 667063e416a2
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/locationmapnavfw/library/src/mnproviderfinder.cpp	Tue Feb 02 01:06:48 2010 +0200
@@ -0,0 +1,198 @@
+/*
+* Copyright (c) 2005-2006 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:  MnProviderFinder class implementation
+*
+*/
+
+
+#include <e32base.h>
+#include <apgcli.h>
+
+#include "mnappserviceuids.hrh"
+
+#include "mnproviderimpl.h"
+#include "mnproviderfinder.h"
+
+#include "mndebug.h"
+
+// ======== LOCAL FUNCTIONS ========
+
+// ---------------------------------------------------------------------------
+//  Cleanup item for RPointerArray<CMnProviderImpl>
+// ---------------------------------------------------------------------------
+//
+void CleanupPointerArray(TAny* aArray)
+    {
+    ( static_cast<RPointerArray<CMnProviderImpl>*>( aArray ) )->ResetAndDestroy();
+    }
+
+// ---------------------------------------------------------------------------
+//  Finds service UID for given CMnProvider::TService
+// ---------------------------------------------------------------------------
+//
+TUid ServiceUid( CMnProvider::TService aService )
+    {
+    switch ( aService )
+        {
+        case CMnProvider::EServiceMapView:
+            return TUid::Uid( KMnAppMapViewService );
+
+        case CMnProvider::EServiceNavigation:
+            return TUid::Uid( KMnAppNavigationService );
+
+        case CMnProvider::EServiceGeocoding:
+            return TUid::Uid( KMnAppGeocodingService );
+
+        case CMnProvider::EServiceMapImage:
+            return TUid::Uid( KMnAppMapImageService );
+
+        default:
+            return TUid::Uid( 0 );
+        }
+    }
+
+// ---------------------------------------------------------------------------
+//  Finds provider in given list by UID
+// ---------------------------------------------------------------------------
+//
+TInt FindProviderByUid( TUid aAppUid, RPointerArray<CMnProvider>& aProviders )
+    {
+    for (TInt i = 0; i < aProviders.Count(); i++)
+        {
+        if ( aProviders[i]->Uid().iUid == aAppUid.iUid )
+            return i;
+        }
+    return KErrNotFound;
+    }
+
+// ---------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
+//
+void FindAllServiceProvidersL(
+    RPointerArray<CMnProvider>& aProviders,
+    CMnProvider::TServices aServices )
+    {
+    LOG("FindAllServiceProvidersL in");
+
+    RApaLsSession apa;
+    User::LeaveIfError( apa.Connect() );
+    CleanupClosePushL( apa );
+
+    Swi::RSisRegistrySession sis;
+    User::LeaveIfError( sis.Connect() );
+    CleanupClosePushL( sis );
+
+    const CMnProvider::TService KKnownServices[] =
+        {
+        CMnProvider::EServiceMapView,
+        CMnProvider::EServiceNavigation,
+        CMnProvider::EServiceGeocoding,
+        CMnProvider::EServiceMapImage
+        };
+    const TInt KNumKnownServices = sizeof( KKnownServices ) / sizeof ( CMnProvider::TService );
+
+    // find all providers for known services
+    for ( TInt i = 0; i < KNumKnownServices; i++ )
+        {
+        // but consider only required services
+        if ( aServices & KKnownServices[i] )
+            {
+            TInt err = apa.GetServerApps( ServiceUid( KKnownServices[i] ) );
+            while ( !err )
+                {
+                TApaAppInfo app;
+                err = apa.GetNextApp(app);
+                if ( !err )
+                    {
+                    // add this app to the list, if not added yet
+                    TInt index = FindProviderByUid( app.iUid, aProviders );
+                    if ( index == KErrNotFound )
+                        {
+                        // add new provider to the list
+                        LOG2("found new provider candidate uid{%08X}, name{%S}", 
+                            app.iUid.iUid, &app.iFullName);
+
+                        // find all data about this provider
+                        CMnProviderImpl* provider = NULL;
+                        TRAP( err, provider = CMnProviderImpl::NewL( app.iUid, apa, sis ) );
+                        if ( !err )
+                            {
+                            if ( provider->IsTrusted() )
+                                {
+                                CleanupStack::PushL( provider );
+                                aProviders.AppendL( provider );
+                                CleanupStack::Pop( provider );
+                                }
+                            else
+                                {
+                                delete provider;
+                                LOG1("untrusted provider uid{%X}", app.iUid.iUid);
+                                }
+                            }
+                        else
+                            {
+                            // skip provider if cannot be constructed
+                            LOG2("construction failed for uid{%X}, error %d", app.iUid.iUid, err);
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+    CleanupStack::PopAndDestroy( &sis );
+    CleanupStack::PopAndDestroy( &apa );
+
+    LOG("FindAllServiceProvidersL out");
+    }
+
+// ======== MEMBER FUNCTIONS ========
+
+// ---------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
+//
+EXPORT_C void MnProviderFinder::FindProvidersL(
+    RPointerArray<CMnProvider>& aProviders)
+    {
+    CMnProvider::TServices allServices =
+        CMnProvider::EServiceMapView |
+        CMnProvider::EServiceNavigation |
+        CMnProvider::EServiceGeocoding |
+        CMnProvider::EServiceMapImage;
+
+    FindAllServiceProvidersL( aProviders, allServices );
+    }
+
+// ---------------------------------------------------------------------------
+// ---------------------------------------------------------------------------
+//
+EXPORT_C void MnProviderFinder::FindProvidersL(
+    RPointerArray<CMnProvider>& aProviders,
+    CMnProvider::TServices aRequiredServices)
+    {
+    FindAllServiceProvidersL( aProviders, aRequiredServices );
+
+    // verify that providers meet service support requirements
+    for ( TInt i = aProviders.Count() - 1; i >= 0; i-- )
+        {
+        CMnProvider* provider = aProviders[i];
+        
+        if ( ( provider->SupportedServices() & aRequiredServices ) != aRequiredServices )
+            {
+            aProviders.Remove( i );
+            delete provider;
+            }
+        }
+    }
+