photosgallery/viewframework/commandhandlers/commoncommandhandlers/src/glxcommandhandlerfilterimagesorvideos.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/photosgallery/viewframework/commandhandlers/commoncommandhandlers/src/glxcommandhandlerfilterimagesorvideos.cpp Thu Dec 17 08:45:44 2009 +0200
@@ -0,0 +1,336 @@
+/*
+* Copyright (c) 2008-2009 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: Show commmand handler
+*
+*/
+
+
+
+
+#include "glxcommandhandlerfilterimagesorvideos.h"
+
+#include <eikmenup.h>
+
+#include <glxcommandhandlers.hrh>
+#include <glxtracer.h>
+#include <glxuiutility.h>
+#include <mglxmedialist.h>
+#include <mglxmedialistprovider.h>
+#include <glxfilterfactory.h>
+#include <bldvariant.hrh> // for feature flags
+
+/**
+ * @internal reviewed 08/02/2008 by Rhodri Byles
+ */
+
+// ---------------------------------------------------------------------------
+// C++ default constructor. Inlined to save a bit of rom, note that for inline
+// it needs to be before its use in NewL
+// ---------------------------------------------------------------------------
+inline
+CGlxCommandHandlerFilterImagesOrVideos::CGlxCommandHandlerFilterImagesOrVideos(
+ MGlxMediaListProvider* aMediaListProvider,
+ CGlxUiUtility& aUiUtility )
+ : CGlxMediaListCommandHandler( aMediaListProvider ),
+ iUiUtility( aUiUtility )
+ {
+ // No implentation
+ }
+
+// ---------------------------------------------------------------------------
+// Two-phased constructor.
+// ---------------------------------------------------------------------------
+EXPORT_C CGlxCommandHandlerFilterImagesOrVideos*
+ CGlxCommandHandlerFilterImagesOrVideos::NewL(
+ MGlxMediaListProvider* aMediaListProvider )
+ {
+ // get Hui utility, if it fails we leave the whole construction
+ CGlxUiUtility* utility = CGlxUiUtility::UtilityL();
+ // put utility to cleanupstack in case allocating self fails
+ CleanupClosePushL( *utility );
+ // we have HUI utility so create the class next, give the
+ // dereferenced hui utility for it so self takes ownership
+ CGlxCommandHandlerFilterImagesOrVideos* self =
+ new( ELeave ) CGlxCommandHandlerFilterImagesOrVideos(
+ aMediaListProvider,
+ *utility );
+ // take utility out of stack as ownership transferred to this class
+ CleanupStack::PopAndDestroy( utility );
+ // perform 2nd phase
+ CleanupStack::PushL( self );
+ self->ConstructL();
+ CleanupStack::Pop( self );
+ return self;
+ }
+
+// ---------------------------------------------------------------------------
+// Destructor
+// ---------------------------------------------------------------------------
+EXPORT_C CGlxCommandHandlerFilterImagesOrVideos::~CGlxCommandHandlerFilterImagesOrVideos()
+ {
+ TRACER("CGlxCommandHandlerFilterImagesOrVideos::~CGlxCommandHandlerFilterImagesOrVideos");
+ // remember to close the instance of huiutility
+ iUiUtility.Close();
+ }
+
+// -----------------------------------------------------------------------------
+// ConstructL
+// -----------------------------------------------------------------------------
+void CGlxCommandHandlerFilterImagesOrVideos::ConstructL()
+ {
+ // create the commands
+ TCommandInfo info( EGlxCmdShowAll );
+ // show only in Grid view
+ info.iViewingState = TCommandInfo::EViewingStateBrowse;
+ // Enable for any item count
+ info.iMinSelectionLength = 0;
+ AddCommandL( info );
+
+ info.iCommandId = EGlxCmdShowImages;
+ AddCommandL( info );
+
+ info.iCommandId = EGlxCmdShowVideos;
+ AddCommandL( info );
+
+ info.iCommandId = EGlxCmdShow;
+ AddCommandL( info );
+ }
+
+// -----------------------------------------------------------------------------
+// DynInitMenuPaneL
+// -----------------------------------------------------------------------------
+void CGlxCommandHandlerFilterImagesOrVideos::DynInitMenuPaneL(
+ TInt /*aResourceId*/, CEikMenuPane* aMenuPane )
+ {
+ if( iInFullScreen )
+ {
+ // We are is Full screen so dim/hide the "Show" menu
+ // this dims/hides the cascade as well
+ if( aMenuPane )
+ {
+ TInt pos;
+ if ( aMenuPane->MenuItemExists( EGlxCmdShow, pos ) )
+ {
+ aMenuPane->SetItemDimmed( EGlxCmdShow, ETrue );
+ }
+ }
+ }
+ else
+ {
+ // We are in the Grid View so Filter out the menu options accordingly
+
+ // Get the orginal filter used by the media list
+ CMPXFilter* orgFilter = MediaList().Filter();
+ TGlxFilterItemType currentItemType = EGlxFilterVideoAndImages;
+
+ // If a filter is used get the current itemtype
+ // If no filter is used the everything is displayed which is the same
+ // as EGlxFilterVideoAndImages
+ if( orgFilter )
+ {
+ if( orgFilter->IsSupported( KGlxFilterGeneralItemType ) )
+ {
+ currentItemType = *(orgFilter->Value<TGlxFilterItemType>(
+ KGlxFilterGeneralItemType ) );
+ }
+ }
+ // This will contain the Id of the command to dim/hide
+ TInt commandIdToDim = 0;
+ switch( currentItemType )
+ {
+ case EGlxFilterVideoAndImages:
+ {
+ // As the current filter type is EGlxFilterVideoAndImages we
+ // should remove the "All" option from the menu
+ commandIdToDim = EGlxCmdShowAll;
+ break;
+ }
+ case EGlxFilterImage:
+ {
+ // As the current filter type is EGlxFilterImage we
+ // should remove the "Images" option from the menu
+ commandIdToDim = EGlxCmdShowImages;
+ break;
+ }
+ case EGlxFilterVideo:
+ {
+ // As the current filter type is EGlxFilterVideo we
+ // should remove the "Videos" option from the menu
+ commandIdToDim = EGlxCmdShowVideos;
+ break;
+ }
+ default:
+ {
+ // This case does not happen in real life.
+ // If it does then all three options get displayed on the menu
+ break;
+ }
+ }
+
+ // Now dim/hide the required menu option
+ if (commandIdToDim && aMenuPane)
+ {
+ TInt pos;
+ if ( aMenuPane->MenuItemExists(commandIdToDim, pos) )
+ {
+ aMenuPane->SetItemDimmed(commandIdToDim, ETrue);
+ }
+ }
+ }
+ }
+
+// -----------------------------------------------------------------------------
+// DoActivateL
+// -----------------------------------------------------------------------------
+void CGlxCommandHandlerFilterImagesOrVideos::DoActivateL( TInt /*aViewId*/ )
+ {
+ // If the Direction is forwards then we have come from the list view
+ // In which case we make sure the filter is displaying both Images and Videos
+ TGlxNavigationDirection navDir = iUiUtility.ViewNavigationDirection();
+ if( EGlxNavigationForwards == navDir )
+ {
+ SetItemTypeInMediaListL( EGlxFilterVideoAndImages );
+ }
+ }
+
+// -----------------------------------------------------------------------------
+// ExecuteL
+// -----------------------------------------------------------------------------
+TBool CGlxCommandHandlerFilterImagesOrVideos::DoExecuteL(
+ TInt aCommandId, MGlxMediaList& /*aList*/ )
+ {
+ TRACER("CGlxCommandHandlerFilterImagesOrVideos::ExecuteL");
+
+ TBool consume = EFalse;
+ // Create an Item Type and set it to something invalid (within this context)
+ TGlxFilterItemType itemType = EGlxFilterMediaTypeSuppliedInFilter;
+
+ switch( aCommandId )
+ {
+ case EGlxCmdShowAll:
+ {
+ // Set ItemType to Display All
+ itemType = EGlxFilterVideoAndImages;
+ consume = ETrue;
+ break;
+ }
+ case EGlxCmdShowImages:
+ {
+ // Set ItemType to Display Images
+ itemType = EGlxFilterImage;
+ consume = ETrue;
+ break;
+ }
+ case EGlxCmdShowVideos:
+ {
+ // Set ItemType to Display Videos
+ itemType = EGlxFilterVideo;
+ consume = ETrue;
+ break;
+ }
+ case EGlxCmdStateView:
+ {
+ // We are now in Full Screen mode
+ iInFullScreen = ETrue;
+ consume = ETrue;
+ break;
+ }
+ case EGlxCmdStateBrowse:
+ {
+ // We are now in the Grid view
+ iInFullScreen = EFalse;
+ consume = ETrue;
+ break;
+ }
+ default: // No need to do anything
+ {
+ break;
+ }
+ }
+
+ // Has the item type been set
+ if( EGlxFilterMediaTypeSuppliedInFilter != itemType )
+ {
+ // Inform media list of ItemType change
+ SetItemTypeInMediaListL( itemType );
+ }
+
+ return consume;
+ }
+
+// -----------------------------------------------------------------------------
+// SetItemTypeInMediaListL
+// -----------------------------------------------------------------------------
+void CGlxCommandHandlerFilterImagesOrVideos::SetItemTypeInMediaListL(
+ TGlxFilterItemType aItemType)
+ {
+ CMPXFilter* currentFilter = MediaList().Filter();
+ if( currentFilter )
+ {
+ // Examine the item type used
+ if( currentFilter->IsSupported( KGlxFilterGeneralItemType ) )
+ {
+ TGlxFilterItemType itemType = EGlxFilterVideoAndImages;
+ itemType = *(currentFilter->Value<TGlxFilterItemType>(
+ KGlxFilterGeneralItemType));
+
+ // Is the itemType already set to what we want.
+ if( aItemType != itemType )
+ {
+ // No it's not so change it.
+ // Create a TGlxFilterProperties with the correct itemType
+ TGlxFilterProperties filterProperties;
+ filterProperties.iItemType = aItemType;
+
+ // Create a Filter based on the current filter but with the
+ // new itemType
+ CMPXFilter* newFilter = TGlxFilterFactory::CreateCombinedFilterL(
+ filterProperties,
+ currentFilter,
+ ETrue);
+ CleanupStack::PushL(newFilter);
+
+ // Set this filter in the media list
+ MediaList().SetFilterL( newFilter );
+ CleanupStack::PopAndDestroy( newFilter );
+ }
+ }
+ }
+ else
+ {
+ // There is no filter set. So everything is displayed
+ // Check if this is what we want.
+ // If no filter is set and we need to display everything then there is
+ // no need to do anything.
+ if( EGlxFilterVideoAndImages != aItemType )
+ {
+ // We do not want all so change it.
+ // Create a TGlxFilterProperties with the correct itemType
+ TGlxFilterProperties filterProperties;
+ filterProperties.iItemType = aItemType;
+
+ // Create a Filter with the new itemType
+ CMPXFilter* newFilter =
+ TGlxFilterFactory::CreateCombinedFilterL( filterProperties );
+ CleanupStack::PushL( newFilter );
+
+ // Set this filter in the media list
+ MediaList().SetFilterL( newFilter );
+ CleanupStack::PopAndDestroy( newFilter );
+ }
+ }
+ }
+
+
+//End of file