1 /*

     2 * Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). 

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  The private implementation of AlfHostAPI.

    15 *

    16 */

    17 

    18 

    19 #include "alfhostapiimpl.h"

    20 #include <alf/alfwidgetcontrol.h>

    21 #include <alf/ialflayoutmanager.h>

    22 #include <alf/alfexceptions.h>

    23 

    24 namespace Alf

    25     {

    26     

    27 AlfHostAPIImpl::AlfHostAPIImpl(): mBaseLayout(NULL), mHostControl(NULL)

    28     {

    29     }

    30     

    31     

    32 AlfHostAPIImpl::~AlfHostAPIImpl()

    33     {

    34     }

    35 

    36 OSN_EXPORT IAlfInterfaceBase* AlfHostAPIImpl::makeInterface(

    37     const IfId& aType )

    38     {

    39     UString param(aType.mImplementationId);

    40     if ( param == IAlfHostAPI::type().mImplementationId )

    41         {

    42         return static_cast<IAlfHostAPI*>( this );

    43         }

    44     return 0;

    45     }

    46 

    47 void AlfHostAPIImpl::setHostControl(CAlfWidgetControl& aControl)

    48     {

    49     mHostControl = &aControl;

    50     }

    51 

    52 void AlfHostAPIImpl::setConnection(CAlfWidgetControl& aControl, AlfRole aRole)

    53     {

    54     if (mHostControl)

    55         {

    56         // Remove previous host connection from connected control

    57         if(aControl.Host())

    58             {

    59             CAlfWidgetControl* parentControl = dynamic_cast<CAlfWidgetControl*>(aControl.Host());

    60             if(parentControl)

    61                 {

    62                 parentControl->hostAPI().removeConnection(aControl);

    63                 }

    64             }

    65         

    66         // Add connection from host control to connected control

    67         TRAPD(err, mHostControl->AddConnectionL(&aControl,aRole));

    68         if(err != KErrNone)

    69             {

    70             ALF_THROW(AlfException, err, "AlfHostAPIImpl::setConnection() - AddConnectionL() failed.");

    71             }        

    72         

    73         // Update layout of host control if a child control was connected

    74         if (aRole == EChild && mBaseLayout.get())

    75             {

    76             mBaseLayout->updateChildLayout(&aControl);

    77             }

    78         }

    79     }

    80 

    81 CAlfWidgetControl* AlfHostAPIImpl::getConnection(int aIndex) const

    82     {

    83     if (mHostControl)

    84     	{

    85     	//AlfControl doesn't perform bound checks.

    86     	if (aIndex >=0 && aIndex < mHostControl->ConnectionCount()) 

    87     		{

    88     		return (static_cast<CAlfWidgetControl*>(&(mHostControl->Connection(aIndex)))); 

    89     		}

    90     	}

    91     return 0; //NULL is not defined in osncore

    92     }

    93     

    94 int AlfHostAPIImpl::getConnectionCount() const

    95     {

    96     int connectionCount = 0;

    97     if (mHostControl)

    98         {

    99         connectionCount = mHostControl->ConnectionCount();

   100         }

   101     return connectionCount;

   102     }

   103     

   104 int AlfHostAPIImpl::getConnectionIndex(CAlfWidgetControl& aControl) const

   105     {

   106     return mHostControl->FindConnection(&aControl);

   107     }

   108 

   109 void AlfHostAPIImpl::removeConnection(CAlfWidgetControl& aControl)

   110     {

   111     if (mHostControl)

   112         {

   113         mHostControl->RemoveConnection(&aControl);  

   114         if (getBaseLayout())

   115             {

   116             getBaseLayout()->childRemoved(&aControl);

   117             }

   118         }

   119     }

   120 

   121 void AlfHostAPIImpl::setBaseLayout(IAlfLayoutManager& aLayout)

   122     {

   123     if(mHostControl)

   124     	{

   125         mBaseLayout.reset(&aLayout);

   126         mBaseLayout->createLayout(*mHostControl, 0, 0);

   127         }

   128     }

   129 

   130 IAlfLayoutManager* AlfHostAPIImpl::getBaseLayout() const

   131     {

   132     return mBaseLayout.get();

   133     }

   134 

   135     } //namespace alf

   136 

   137 

   138