2004-04-09 09:05:39 -04:00
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/* ====================================================================
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Copyright 2002-2004 Apache Software Foundation
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==================================================================== */
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2004-04-09 07:45:38 -04:00
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package org.apache.poi.ddf;
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/**
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* This is the abstract base class for all escher properties.
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*
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* @see EscherOptRecord
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*
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* @author Glen Stampoultzis (glens at apache.org)
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*/
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abstract public class EscherProperty
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{
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2005-05-01 07:26:18 -04:00
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protected short id;
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2004-04-09 07:45:38 -04:00
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/**
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* The id is distinct from the actual property number. The id includes the property number the blip id
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* flag and an indicator whether the property is complex or not.
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*/
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public EscherProperty( short id )
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{
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this.id = id;
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}
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/**
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* Constructs a new escher property. The three parameters are combined to form a property
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* id.
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*/
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public EscherProperty( short propertyNumber, boolean isComplex, boolean isBlipId )
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{
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this.id = (short)(propertyNumber +
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(isComplex ? 0x8000 : 0x0) +
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(isBlipId ? 0x4000 : 0x0));
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}
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public short getId()
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{
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return id;
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}
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public short getPropertyNumber()
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{
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return (short) ( id & (short) 0x3FFF );
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}
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public boolean isComplex()
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{
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return ( id & (short) 0x8000 ) != 0;
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}
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public boolean isBlipId()
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{
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return ( id & (short) 0x4000 ) != 0;
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}
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public String getName()
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{
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return EscherProperties.getPropertyName(id);
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}
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/**
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* Most properties are just 6 bytes in length. Override this if we're
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* dealing with complex properties.
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*/
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public int getPropertySize()
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{
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return 6;
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}
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/**
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* Escher properties consist of a simple fixed length part and a complex variable length part.
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* The fixed length part is serialized first.
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*/
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abstract public int serializeSimplePart( byte[] data, int pos );
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/**
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* Escher properties consist of a simple fixed length part and a complex variable length part.
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* The fixed length part is serialized first.
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*/
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abstract public int serializeComplexPart( byte[] data, int pos );
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}
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