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/*
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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#include "tsbackstepping.h"
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#include <w32std.h>// key event
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#include <apgwgnam.h>// for CApaWindowGroupName
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#include <apgtask.h>
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#include <coedef.h>
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#include <e32property.h>
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#include <e32debug.h>
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#include <homescreendomainpskeys.h>
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#include <afactivitylauncher.h>
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#include "tsbacksteppingfilter.h"
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/**
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* String to switch hsapplication to IDLE state using activity framework
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*/
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_LIT(KHsActivactionUri, "appto://20022F35?activityname=HsIdleView&activityinbackground=true");
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// -----------------------------------------------------------------------------
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/**
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* Symbian two-phases constructor. Allocate create and initialize backstepping engine
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* Instance is pushed int cleanup stack.
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* @param aMonitor - window group changes monitor
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* @return address to backstepping engine
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*/
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CTsBackstepping* CTsBackstepping::NewL( MTsWindowGroupsMonitor& aMonitor )
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{
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CTsBackstepping* self = CTsBackstepping::NewLC( aMonitor );
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CleanupStack::Pop( self );
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return self;
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}
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// -----------------------------------------------------------------------------
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/**
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* Symbian two-phases constructor. Allocate create and initialize backstepping engine
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* @param aMonitor - window group changes monitor
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* @return address to backstepping engine
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*/
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CTsBackstepping* CTsBackstepping::NewLC( MTsWindowGroupsMonitor& aMonitor )
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{
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CTsBackstepping* self = new (ELeave) CTsBackstepping( aMonitor );
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CleanupStack::PushL( self );
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self->ConstructL();
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return self;
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}
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// -----------------------------------------------------------------------------
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/**
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* Constructor.
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* @param aMonitor - window group changes monitor
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*/
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CTsBackstepping::CTsBackstepping( MTsWindowGroupsMonitor &aMonitor )
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:
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CTsWindowGroupsObserver( aMonitor ), iHsWasFirst(ETrue)
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{
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}
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// -----------------------------------------------------------------------------
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/**
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* CTsBackstepping::~CTsBackstepping
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* deconstructor
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*/
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CTsBackstepping::~CTsBackstepping()
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{
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delete iFilter;
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}
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// -----------------------------------------------------------------------------
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/**
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* Symbian second-phase constructor.
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* Subscribe to window group monitor events (using BaseConstructL) and allocate
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* filtering list
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*/
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void CTsBackstepping::ConstructL ()
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{
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BaseConstructL();
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iFilter = CTsBacksteppingFilter::NewL();
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}
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// -----------------------------------------------------------------------------
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/**
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* Analyzes window stack and move homescreen to proper position
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* Interface implementation.
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* @see MTsWindowGroupsObserver::HandleWindowGroupChanged
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*/
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void CTsBackstepping::HandleWindowGroupChanged(
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MTsResourceManager &aResources,
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const MTsRunningApplicationStorage& aStorage )
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{
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RDebug::Print(_L("[Backstepping] started"));
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TRAP_IGNORE( HandleWindowGroupChangedL( aResources, aStorage ) );
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RDebug::Print(_L("[Backstepping] finished"));
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}
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// -----------------------------------------------------------------------------
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/**
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* Analyzes window stack and move homescreen to proper position
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* @see MTsWindowGroupsObserver::HandleWindowGroupChanged from param info
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*/
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void CTsBackstepping::HandleWindowGroupChangedL(
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MTsResourceManager &aResources,
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const MTsRunningApplicationStorage& aStorage )
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{
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// calculate the desired position of Homescreen
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const TInt currentHsOffset( HomescreenOffsetL( aStorage ) );
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TInt optimalOffset(1);
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TInt targetHsOffset(currentHsOffset);
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TBool isFirst(ETrue);
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for( TInt offset(0); offset < currentHsOffset; ++offset )
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{
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RDebug::Print( _L("[Backstepping] application: %08x"),
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aStorage[offset].UidL().iUid );
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if( TUid::Null() != aStorage[offset].UidL() )
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{
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isFirst = EFalse;
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if( aStorage[offset].IsEmbeded())
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{
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targetHsOffset = aStorage.ParentIndex(aStorage[offset])+ 1;
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}
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else if (!iFilter->isBlocked( aStorage[offset].UidL() ))
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{
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if(offset + 1 < currentHsOffset &&
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aStorage[offset+1].UidL() == TUid::Null() )
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{
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++optimalOffset;
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}
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targetHsOffset = optimalOffset;
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}
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break;
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}
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else
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{
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++optimalOffset;
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}
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}
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SwitchToIdleStateL(aResources, isFirst);
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// change windows order if necessary
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if(targetHsOffset != currentHsOffset)
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{
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RDebug::Print(_L("[Backstepping] about to change window groups order"));
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aResources.WsSession().SetWindowGroupOrdinalPosition(
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aStorage[currentHsOffset].WindowGroupId(),
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targetHsOffset );
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}
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}
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// -----------------------------------------------------------------------------
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/**
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* Find and return current position of hsapplication on window server stack
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* @param aStorage - storage with running app info
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* @return position of hsapplication on window server stack
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*/
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TInt CTsBackstepping::HomescreenOffsetL(
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const MTsRunningApplicationStorage& aStorage ) const
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{
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TInt offset( KErrNotFound );
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for( TInt iter(0); KErrNotFound == offset && iter < aStorage.Count(); ++iter )
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{
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if( KHsCategoryUid == aStorage[iter].UidL() )
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{
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offset = iter;
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}
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}
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User::LeaveIfError( offset );
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return offset;
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}
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// -----------------------------------------------------------------------------
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/**
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* Change hsapplication state to IDLE if moves to background
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* @param aResources - OS resources manager
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* @param aIsFrst - flag to inform if hsapplication is in foreground
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*/
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void CTsBackstepping::SwitchToIdleStateL(MTsResourceManager& aResources,
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TBool aIsFirst)
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{
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// switch Homescreen to Idle state if Homescreen is not in foreground and is in different state
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if( iHsWasFirst && !aIsFirst )
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{
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TInt hsState( EHomeScreenIdleState );
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User::LeaveIfError(RProperty::Get( KHsCategoryUid,
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KHsCategoryStateKey,
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hsState ) );
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if(!(hsState & EHomeScreenWidgetViewActive ) )
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{
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RDebug::Print(_L("[Backstepping] about to switch HS activity"));
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CAfActivityLauncher *activityEnabler =
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CAfActivityLauncher::NewLC( aResources.ApaSession(),
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aResources.WsSession() );
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activityEnabler->launchActivityL( KHsActivactionUri );
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CleanupStack::PopAndDestroy( activityEnabler );
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}
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}
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iHsWasFirst = aIsFirst;
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}
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// end of file
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