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diff --git a/offapi/com/sun/star/awt/XLayoutContainer.idl b/offapi/com/sun/star/awt/XLayoutContainer.idl
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+++ b/offapi/com/sun/star/awt/XLayoutContainer.idl
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+#ifndef __com_sun_star_awt_XLayoutContainer_idl__
+#define __com_sun_star_awt_XLayoutContainer_idl__
+
+#ifndef __com_sun_star_awt_XLayoutConstrains_idl__
+#include <com/sun/star/awt/XLayoutConstrains.idl>
+#endif
+#ifndef __com_sun_star_awt_Rectangle_idl__
+#include <com/sun/star/awt/Rectangle.idl>
+#endif
+#ifndef __com_sun_star_beans_XPropertySet_idl__
+#include <com/sun/star/beans/XPropertySet.idl>
+#endif
+#ifndef __com_sun_star_container_XChild_idl__
+#include <com/sun/star/container/XChild.idl>
+#endif
+#ifndef __com_sun_star_awt_MaxChildrenException_idl__
+#include <com/sun/star/awt/MaxChildrenException.idl>
+#endif
+#ifndef __com_sun_star_awt_XLayoutUnit_idl__
+#include <com/sun/star/awt/XLayoutUnit.idl>
+#endif
+
+//=============================================================================
+
+module com {  module sun {  module star {  module awt {
+
+//=============================================================================
+
+interface XLayoutUnit;
+
+/** specifies the layout constraints for a surrounding container.
+
+    @since OOo 3.0
+ */
+interface XLayoutContainer: com::sun::star::container::XChild
+{
+    /** Adds a child. Some containers provide an interface for
+       adding children which you should use. */
+    void addChild( [in] com::sun::star::awt::XLayoutConstrains Child )
+        raises( com::sun::star::awt::MaxChildrenException );
+
+    /** Remove a child. Some containers provide an interface for
+       adding children which you should use.
+    */
+    void removeChild( [in] com::sun::star::awt::XLayoutConstrains Child );
+
+    /** Returns a sequence of the children of this container. */
+    sequence< com::sun::star::awt::XLayoutConstrains > getChildren();
+
+    /** Read/modify some child layout properties. XPropertySet provides a
+       rich API that allows, e.g., for introspection.
+       Should rarely be a need to use; containers shall provide an interface
+       for setting properties more confortably. */
+    com::sun::star::beans::XPropertySet getChildProperties(
+        [in] com::sun::star::awt::XLayoutConstrains Child );
+
+    /** Set at initilization, this object should be notified when a containers state
+       changes, that may affect its size, to queue a layout re-calculation. */
+    void setLayoutUnit( [in] com::sun::star::awt::XLayoutUnit Unit );
+
+    // TEMP: no need for this...
+    com::sun::star::awt::XLayoutUnit getLayoutUnit();
+
+    /** To be used by the parent for the purpose of layout management.
+       For widgets, use XWindow::setPosSize() */
+    void allocateArea( [in] com::sun::star::awt::Rectangle NewArea );
+
+    /** Used by the layouting unit to evaluate size damage, and force a
+       re-allocation. */
+    com::sun::star::awt::Size getRequestedSize();
+
+    /** Used by the layouting unit to evaluate size damage, and force a
+       re-allocation. */
+    com::sun::star::awt::Rectangle getAllocatedArea();
+
+    /** For flow layouting (e.g. wrap-able labels). TODO: We might want to
+       re-design this approach -- check XLayoutConstrains::calcAdjustedSize(). */
+    long getHeightForWidth( [in] long Width );
+
+    /** For flow layouting (e.g. wrap-able labels). TODO: We might want to
+       re-design this approach -- check XLayoutConstrains::calcAdjustedSize(). */
+    boolean hasHeightForWidth();
+};
+
+//=============================================================================
+
+}; }; }; };
+
+#endif