113 lines
3.8 KiB
C++
113 lines
3.8 KiB
C++
/*************************************************************************
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* Copyright 2008 by Sun Microsystems, Inc.
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* $RCSfile: shapeattributelayerholder.hxx,v $
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* $Revision: 1.6 $
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*
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* This file is part of OpenOffice.org.
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*
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* OpenOffice.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 3
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* only, as published by the Free Software Foundation.
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*
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* OpenOffice.org is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License version 3 for more details
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* (a copy is included in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* version 3 along with OpenOffice.org. If not, see
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* <http://www.openoffice.org/license.html>
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* for a copy of the LGPLv3 License.
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*
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************************************************************************/
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#ifndef INCLUDED_SLIDESHOW_SHAPEATTRIBUTELAYERHOLDER_HXX
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#define INCLUDED_SLIDESHOW_SHAPEATTRIBUTELAYERHOLDER_HXX
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#include "attributableshape.hxx"
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#include "shapeattributelayer.hxx"
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#include <boost/noncopyable.hpp>
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namespace slideshow
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{
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namespace internal
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{
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/** Holds a ShapeAttributeLayer, together with the associated
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Shape
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Use this class to hold ShapeAttributeLayer objects the
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RAII way. When this object gets deleted, it will
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automatically revoke the attribute layer for the given
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shape (this encapsulates the somewhat clumsy notification
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process that is required for shape and attribute layer
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interaction).
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*/
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class ShapeAttributeLayerHolder : private boost::noncopyable
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{
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public:
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/** Create a ShapeAttributeLayerHolder instance.
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This constructor creates an empty attribute holder, to
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generate an attribute layer, you have to manually call
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createAttributeLayer().
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*/
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ShapeAttributeLayerHolder() :
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mpShape(),
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mpAttributeLayer()
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{
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}
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~ShapeAttributeLayerHolder()
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{
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reset(); // ensures that the last attribute layer is
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// correctly deregistered from the shape.
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}
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void reset()
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{
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if( mpShape && mpAttributeLayer )
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mpShape->revokeAttributeLayer( mpAttributeLayer );
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}
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/** This constructor receives a pointer to the Shape, from
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which attribute layers should be generated. Initially,
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this object does not create an attribute layer, you
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have to manually call createAttributeLayer().
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@param rShape
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Shape for which attribute layers should be generated.
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*/
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bool createAttributeLayer( const AttributableShapeSharedPtr& rShape )
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{
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reset();
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mpShape = rShape;
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if( mpShape )
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mpAttributeLayer = mpShape->createAttributeLayer();
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return mpAttributeLayer;
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}
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ShapeAttributeLayerSharedPtr get() const
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{
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return mpAttributeLayer;
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}
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private:
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AttributableShapeSharedPtr mpShape;
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ShapeAttributeLayerSharedPtr mpAttributeLayer;
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};
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}
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}
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#endif /* INCLUDED_SLIDESHOW_SHAPEATTRIBUTELAYERHOLDER_HXX */
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