/*

* 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:  Source file for Location System UI view.

*

*

*/

// System Include

#include <barsread.h> 					// For TResourceReader

#include <featmgr.h> 				    // FeatureManager

#include <bautils.h>

#include <StringLoader.h>				// String Loader

#include <aknViewAppUi.h>				// App Ui

#include <hlplch.h>						// Help

#include <gulicon.h>					// Gul Icon

#include <eikmenup.h>					// Menu pane

#include <eikmenub.h>					// Menu Bar

#include <bldvariant.hrh>               // KFeatureHelpId

#include <data_caging_path_literals.hrh>

#include <locsysuiviewrsc.rsg>

#include <locsysuiview.mbg>	

// User Include

#include "locsysuiview.hrh"

#include "locsysuiview.h"

#include "locsysuicontainer.h"

#include "locationsettings.h"

#include "locsettingsuiengine.h"

#include "locsettingsuiclient.h"

#include "locpossettings.h"

// Literal Definitions

_LIT( KLocationSystemUiViewIconFileName, "\\resource\\apps\\locsysuiview.mif" );

// ========================= MEMBER FUNCTIONS ================================

// ---------------------------------------------------------------------------

// CLocSysUiView::CLocSysUiView

// Overloaded Constructor

//

// ---------------------------------------------------------------------------

//	

CLocSysUiView::CLocSysUiView()

	:iResourceLoader( *CCoeEnv::Static())

	{

	}

// ---------------------------------------------------------------------------

// CLocSysUiView::~CLocSysUiView

// Destructor

//

// ---------------------------------------------------------------------------

//

CLocSysUiView::~CLocSysUiView()

	{

	// Delete the View engine	

	delete iEngine;

	// Close the Resource loader

	iResourceLoader.Close();

	// Release all the resources associated with Feature Manager

	FeatureManager::UnInitializeLib();

	}

// ---------------------------------------------------------------------------

// CLocSysUiView* CLocSysUiView::NewL

// Creates new Location Sys Ui plugin. Internally calls NewLC

//

// @return CLocSysUiView*	Reference to the application view

// ---------------------------------------------------------------------------    

//

EXPORT_C CLocSysUiView* CLocSysUiView::NewL()

	{	

    CLocSysUiView* self = CLocSysUiView::NewLC();

	CleanupStack::Pop( self );

	return self;

	}

// ---------------------------------------------------------------------------

// CLocSysUiView* CLocSysUiView::NewLC

// Creates new Location Sys Ui plugin. Leaves the object on the Cleanup stack

// 

// @return CLocSysUiView*	Reference to the application view

// ---------------------------------------------------------------------------

//

CLocSysUiView* CLocSysUiView::NewLC()

	{	

    CLocSysUiView* self = new (ELeave) CLocSysUiView();

	CleanupStack::PushL( self );

	self->ConstructL();

	return self;

	}

// ---------------------------------------------------------------------------

// void CLocSysUiView::ConstructL

// Second Phase Constructor

//

// ---------------------------------------------------------------------------

//

void CLocSysUiView::ConstructL()

    {

    // Initialize the Feature Manager library

    FeatureManager::InitializeLibL();

    if ( FeatureManager::FeatureSupported( KFeatureIdFfLocationsysuiHidePositioningMenu ) )

        {

        User::Leave( KErrNotSupported );

        }

    // Open the Resource File

    OpenLocalizedResourceFileL( KLocSysUiViewResFileName, iResourceLoader );

    // Call AknView's BaseConstrutL

    BaseConstructL( R_LOCSYSUIVIEW_APP_VIEW );

    // Create the View Engine

    iEngine = CLocSettingsUiEngine::NewL( *AppUi());

    // Load all the plug-ins. The creation of the engine does not load the

    // plugins and they have to be explicitly loaded. The return value need

    // not be stored here. Hence, the value is ignored

    iEngine->CreateAvailableSettingsUiL();

    }

EXPORT_C void CLocSysUiView::LaunchedfromPosSettingsApp()

    {

    isLaunchedFromPosSettingsApp = ETrue;

    }

// ---------------------------------------------------------------------------

// void CLocSysUiView::HandleClientRectChange

//

// ---------------------------------------------------------------------------	

//

void CLocSysUiView::HandleClientRectChange()

	{

	if ( iContainer )

		{

		iContainer->SetRect( ClientRect());		

		}

	}

// ---------------------------------------------------------------------------

// void CLocSysUiView::ActivateView

//

// ---------------------------------------------------------------------------	

//

void CLocSysUiView::ActivateViewL()

    {

    // Activate the Current view in the default mode.

    AppUi()->ActivateLocalViewL(Id());

    }

// ---------------------------------------------------------------------------

// void CLocSysUiView::DeActivateView

//

// ---------------------------------------------------------------------------	

//

void CLocSysUiView::DeActivateView()

    {

    // Close all the sub-settings views if they are Open

    // Retrieve the Settings Description Array

	RPointerArray<CLocationSettings>& settingsArray = iEngine->SettingsUiArray();

    for( TInt i = 0; i < settingsArray.Count(); i ++ )

        {

        // Retrieve each settings UI

        CLocationSettings* settings = settingsArray[i];

        // Close the Settings UI

        settings->Close();

        }

    // Stop displaying the Menubar if its being displayed.

    StopDisplayingMenuBar();    

    }

// ---------------------------------------------------------------------------

// void CLocSysUiView::SetObserver

//

// ---------------------------------------------------------------------------	

//    

void CLocSysUiView::SetObserver( MLocationUIObserver*       aObserver )

    {

    iObserver = aObserver;

    }

// ---------------------------------------------------------------------------

// void CLocSysUiView::DoActivateL

// 

// ---------------------------------------------------------------------------	

//

void CLocSysUiView::DoActivateL( const TVwsViewId& 	    aPrevViewId,

											   TUid		/* aCustomMessageId*/,

						  				 const TDesC8&	/* aCustomMessage */ )

	{

	if ( !iSettingsUiDismissalPending )

		{

		// Assign the previous view Id

		iPrevViewId = aPrevViewId;

		// Set the Highlighted item to 0

		iHighlightedIndex = 0;	

		}

	else

		{

		iSettingsUiDismissalPending = EFalse;

		}	

	// Destroy the existing container if it exists

	if ( iContainer )

        {

        AppUi()->RemoveFromViewStack( *this, iContainer );

        delete iContainer;

        iContainer=NULL;

        }						

    // Retrieve the Settings Description Array

	RPointerArray<CLocationSettings>& settingsArray = iEngine->SettingsUiArray();

    // Create new Container	

	iContainer = CLocSysUiContainer::NewL( *this, settingsArray, ClientRect());

	iContainer->SetMopParent( this );

	AppUi()->AddToViewStackL( *this, iContainer );

	iContainer->SetFocussedElement( iHighlightedIndex );

	if ( isLaunchedFromPosSettingsApp && !iEikonEnv->StartedAsServerApp())

		{

		Cba()->SetCommandSetL( R_LOCSYSUIVIEW_SOFTKEYS_OPTION_OPEN_EXIT );	

		}

	// Start the ECom notification for observing changes in the plug-in loading

	// and unloading for ECom plug-ins

	iEngine->StartSettingsEComNotificationL( this );

	}

// ---------------------------------------------------------------------------

// void CLocSysUiView::DoDeactivate

//

// ---------------------------------------------------------------------------	

//	

void CLocSysUiView::DoDeactivate()

	{

	// Stop the ECom notifcation

	iEngine->StopSettingsEComNotification();

	// Destroy Container

	if ( iContainer )

        {

        iHighlightedIndex = iContainer->CurrentFocussedElement();

        AppUi()->RemoveFromViewStack( *this, iContainer );

        delete iContainer;

        iContainer = NULL;

        }

	}

// ---------------------------------------------------------------------------

// TUid CLocSysUiView::Id

// Returns the View Id. Should be chosen to reflect the Implementation UID 

// of the Plugin

//

// @return TUid The View Id

// ---------------------------------------------------------------------------

//	

TUid CLocSysUiView::Id() const

	{

	return KLocSysUiViewPluginUid;

	}

// ---------------------------------------------------------------------------

// void CLocSysUiView::HandleCommandL

//

// ---------------------------------------------------------------------------	

void CLocSysUiView::HandleCommandL( TInt aCommand )	

	{

	switch ( aCommand )

        {

        case ELocSysUiCmdOpen:

        	{

			// Launch the corresponding Settings UI

			TRAPD( error, 

			       iContainer->GetFocussedSettingsUiL().

			                        LaunchLocationUIL( KDefaultParamValue,

			                                           this ));

			if ( KErrNone == error )

				{

				iSettingsUiDismissalPending = ETrue;	

				}

			else if( KErrNoMemory == error )

				{

				User::Leave( error );

				}

        	break;

        	}

        case EAknCmdHelp:

        	{

        	// Launch Help file

    		HlpLauncher::LaunchHelpApplicationL( 

    		                CEikonEnv::Static()->WsSession(),

       			            AppUi()->AppHelpContextL());

        	break;

        	}

        case EAknSoftkeyBack:

       		{

       		if( iPrevViewId.iViewUid.iUid )

       			{

	       		// Activate the Parent view

	       		AppUi()->ActivateLocalViewL( iPrevViewId.iViewUid );	       		    				

	       		// If someone is listening for the notification of the termination

	       		// event hand it over to the observer

	       		if( iObserver )

	       		    {

	       		    iObserver->LocationUIDismissed( KErrNone );

	       		    }       			

       			}

			else

				{

				AppUi()->HandleCommandL( EAknSoftkeyExit );

       		    }

            break;	

       		}

        default:

        	{

        	AppUi()->HandleCommandL( aCommand );

            break;	

        	}

        }

	}

// -----------------------------------------------------------------------------

// CLocSysUiView::DynInitMenuPaneL

// -----------------------------------------------------------------------------

void CLocSysUiView::DynInitMenuPaneL( TInt          aResourceId, 

                                      CEikMenuPane* aMenuPane )

    {   

    if( R_LOCSYSUIVIEW_MENU_ITEM_HELP == aResourceId )

        {

        User::LeaveIfNull( aMenuPane );

        //Handle Help Fature

        HandleHelpFeature( *aMenuPane );

        }

    }

// ---------------------------------------------------------------------------

// void CLocSysUiView::GetCaptionL

// Method for getting caption of this plugin. This should be the 

// localized name of the settings view to be shown in parent view.

// @param aCaption pointer to Caption variable

//

// ---------------------------------------------------------------------------	

//

void CLocSysUiView::GetCaptionL( TDes& aCaption ) const	

	{

	HBufC* caption = StringLoader::LoadL( R_LOCSYSUIVIEW_CAPTION );

    aCaption.Copy( *caption );

    delete caption;

	}

// ---------------------------------------------------------------------------

// Inherited from CGSPluginInterface.

// Creates a new icon of desired type. Ownership of the created icon 

// is transferred to the caller.

// 

// Icon type UIDs (use these defined constants):

// KGSIconTypeLbxItem  -   ListBox item icon.

// KGSIconTypeTab      -   Tab icon.

//  

// @param aIconType UID Icon type UID of the icon to be created.

// @return CGulIcon* Pointer of the icon. NOTE: Ownership of this

// 					icon is transferred to the caller.

// ---------------------------------------------------------------------------

//

CGulIcon* CLocSysUiView::CreateIconL( const TUid aIconType )

	{

	CGulIcon* icon;

    if ( aIconType == KGSIconTypeLbxItem )

        {

		icon = AknsUtils::CreateGulIconL(

                                    AknsUtils::SkinInstance(),

                                    KAknsIIDQgnPropSetGeneLoc,

                                    KLocationSystemUiViewIconFileName,

                                    EMbmLocsysuiviewQgn_prop_set_gene_loc,

                                    EMbmLocsysuiviewQgn_prop_set_gene_loc_mask );

        }

     else

        {

        icon = CGSPluginInterface::CreateIconL( aIconType );

        }

    return icon;

	}

// ---------------------------------------------------------------------------

// TInt CLocSysUiView::PluginProviderCategory()

// Inherited from CGSPluginInterface

// Method for reading the ID of the plugin provider category.

//

// @return Plugin provider category ID defined by 

//		   TGSPluginProviderCategory

// ---------------------------------------------------------------------------

//

TInt CLocSysUiView::PluginProviderCategory() const

	{

	return EGSPluginProviderOEM;

	}

// ---------------------------------------------------------------------------

// void CLocSysUiView::LocationUIDismissed

// Inherited from MLocationUIObserver

// Notifies the termination of the Settings UI

//

// @param aErrorCode The termination reason. KErrNone for normal 

//					terminations. In case of error or pre-mature

//					aborting System wide Error codes.

// ---------------------------------------------------------------------------

//

void CLocSysUiView::LocationUIDismissed( TInt /*aErrorCode*/ )

	{

	// Check if the Location System UI View is the active view

	// If not Activate it

	TVwsViewId activeViewId;

	if ( KErrNone != AppUi()->GetActiveViewId( activeViewId ) ||

	    activeViewId.iViewUid != Id())

		{

		TRAP_IGNORE( AppUi()->ActivateLocalViewL( Id()));

		}

	}

// --------------------------------------------------------------------------- 

// void CLocSysUiView::SessionStateChanged

// Inherited from MLocSettingsUiEcomNotifer

// Notifies any change in the state of the underlying Settings UI

// session

//

// @param aErrorCode Error Code denoting the state change

// ---------------------------------------------------------------------------

//

void CLocSysUiView::EComSessionStateChanged( TInt /*aErrorCode*/ )

	{

	if ( iContainer )

		{

		// Update the Settings UI contents

		TRAP_IGNORE( iEngine->UpdateAvailableSettingsUisL());

		// Obtain the latest Settings descriptions and update

		// Update the list box contents

		TRAP_IGNORE( iContainer->UpdateListBoxL( iEngine->SettingsUiArray()));

		}

	}

// ---------------------------------------------------------------------------

// void CLocSysUiView::ListBoxItemSelected

//

// ---------------------------------------------------------------------------	

//

void CLocSysUiView::ListBoxItemSelectedL()

	{

	if ( iContainer )

		{

		// Launch the corresponding Settings UI

		TRAPD( error, 

		    iContainer->GetFocussedSettingsUiL().LaunchLocationUIL( 

		                                            KDefaultParamValue,

		                                            this ));

		if ( KErrNone == error )

			{

			iSettingsUiDismissalPending = ETrue;	

			}

		else if( KErrNoMemory == error )

			{

			User::Leave( error );

			}

		}

	}

// ---------------------------------------------------------------------------

// void CLocSysUiView::HandleScreenSizeChange

//

// ---------------------------------------------------------------------------

//	

void CLocSysUiView::HandleScreenSizeChange()

	{

	if (iContainer)

		{

		iContainer->SetRect( ClientRect() );		

		}

	}

// ---------------------------------------------------------------------------

// void CLocSysUiView::OpenLocalizedResourceFileL

// Opens the nearest localized resourcefile using aResourceLoader. 

// aResourceLoader should be opened only once before closing it. 

// Otherwise it will raise a panic. Therefore it is better to have 

// multiple resource loaders.

// 

// @param aResourceFileName Drive and name of resource file in format 

//                          <path>:<rsc_file_name>

// @param aResourceLoader Resource loader for the resource. The loader 

//                        must not be opened allready or it will raise 

//                        a panic. It is caller's responsibility to 

//                        close the resource loader after using the 

//                        resource.

// ---------------------------------------------------------------------------

//	

void CLocSysUiView::OpenLocalizedResourceFileL( 

                        const TDesC& 			   aResourceFileName, 

   							  RConeResourceLoader& aResourceLoader )

    {

    RFs fsSession;

    User::LeaveIfError( fsSession.Connect());