c900615e7a
2006/04/12 20:40:09 thb 1.3.18.3: #i37778# Replaced all shared_ptr.get() != NULL places with the more elegant automatic-conversion-to-bool version (at least where the compiler tolerated that) 2006/03/24 18:23:36 thb 1.3.18.2: #i37778# Moved whole slideshow engine from namespace presentation (which conflicts with one of the UNO subnamespaces) to slideshow 2006/03/23 17:22:45 thb 1.3.18.1: #i49357# Changed manual noncopyable boiler plate to boost::noncopyable
119 lines
3.9 KiB
C++
119 lines
3.9 KiB
C++
/*************************************************************************
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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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*
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* $Revision: 1.4 $
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*
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* last change: $Author: kz $ $Date: 2006-12-13 16:01:42 $
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*
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* The Contents of this file are made available subject to
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* the terms of GNU Lesser General Public License Version 2.1.
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*
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*
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* GNU Lesser General Public License Version 2.1
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* =============================================
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* Copyright 2005 by Sun Microsystems, Inc.
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* 901 San Antonio Road, Palo Alto, CA 94303, USA
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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************************************************************************/
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#ifndef _SLIDESHOW_SHAPEATTRIBUTELAYERHOLDER_HXX
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#define _SLIDESHOW_SHAPEATTRIBUTELAYERHOLDER_HXX
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#include <attributableshape.hxx>
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#include <shapeattributelayer.hxx>
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#include <boost/utility.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 /* _SLIDESHOW_SHAPEATTRIBUTELAYERHOLDER_HXX */
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