diff -r 4ea6f81c838a -r 0e9bb658ef58 inc/alf/ialfcontainerwidget.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/inc/alf/ialfcontainerwidget.h	Wed Sep 01 12:23:18 2010 +0100
@@ -0,0 +1,126 @@
+/*
+* Copyright (c) 2007 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:  Base interface for all container widgets
+*
+*/
+
+
+#ifndef I_ALFCONTAINERWIDGET_H
+#define I_ALFCONTAINERWIDGET_H
+
+#include <alf/ialfwidget.h>
+class CAlfLayout;
+
+namespace Alf
+    {
+class IAlfLayoutManager;
+
+namespace ialfcontainerwidget
+    {
+static const IfId ident =
+    {
+    0, "container"
+    };
+    }
+    
+/**
+ * The interface for container widget.
+ * 
+ * Container widget maintains it's own control group. When a widget control is set to container
+ * widget throught the IAlfWidget::setControl() - method the control is automatically appended to the 
+ * container widget's control group. If the control that is being set to the container widget is 
+ * already part of another control group it will be removed from the previous control group and appended
+ * to the container widget's control group.
+ *
+ * @lib alfwidgetmodel.lib
+ * @since S60 ?S60_version
+ * @status Draft
+ */
+class IAlfContainerWidget : public IAlfWidget
+    {
+public:
+
+    static inline const IfId& type()
+        {
+        return ialfcontainerwidget::ident;
+        }
+
+    virtual ~IAlfContainerWidget() {}
+
+    /**
+     * Returns total number of widgets contained by this container.
+     *
+     * @return int Total number of widgets.
+     */
+    virtual int widgetCount() const = 0;
+
+    /**
+     * Adds a child widget to the container.
+     *
+     * This will throw an osncore::AlfException exception with error code 
+     * osncore::EInvalidArgument if the aWidget is the same widget that the container
+     * widget itself or if user tries to add a view widget into a container
+     * widget.
+     *
+     * Adding a widget instance that is already added will be silently
+     * ignored.
+     *
+     * @exception osncore::AlfException with error code osncore::EInvalidArgument if the
+     *            aWidget is the same widget as the container widget or when
+     *            a view widget is attempted to be added to a container.
+     *
+     * @param  aWidget Child widget to be added to container.
+     */
+    virtual void addWidget(IAlfWidget& aWidget) = 0;
+
+    /**
+     * Returns child widget at given index. If index is not found return null.
+     *
+     * @param  aIndex Index of widget to be returned.
+     * @return Widget at given index or null if the widget is not found.
+     */
+    virtual IAlfWidget* getWidget(int aIndex) const = 0;
+    
+    /**
+     * Returns the child index, when given the child widget.
+     *
+     * @param  aWidget child widget, which index is returned 
+     * @return the index of the child widget, or -1, if widget is not child of this container.
+     */
+    virtual int getWidgetIndex(IAlfWidget& aWidget) const = 0; 
+
+    /**
+     * Removes the child widget from given index.
+     *
+     * If widget for the given index is not found then the call
+     * is silently ignored.
+     *
+     * @param aIndex Index from which widget has to be removed.
+     */
+    virtual void removeWidget(int aIndex) = 0;
+
+    /**
+     * Sets the base layout of container widget. Ownership of the
+     * layout manager is transferred to container widget.
+     *
+     * @param aLayout New base layout of container widget.
+     */
+    virtual void applyLayout(IAlfLayoutManager& aLayout) = 0;
+
+
+    };
+
+    } // namespace Alf
+
+#endif // I_ALFCONTAINERWIDGET_H