org.apache.poi.ddf.EscherProperty Maven / Gradle / Ivy
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package org.apache.poi.ddf;
/**
* This is the abstract base class for all escher properties.
*
* @see EscherOptRecord
*
* @author Glen Stampoultzis (glens at apache.org)
*/
public abstract class EscherProperty {
private short _id;
/**
* The id is distinct from the actual property number. The id includes the property number the blip id
* flag and an indicator whether the property is complex or not.
*/
public EscherProperty(short id) {
_id = id;
}
/**
* Constructs a new escher property. The three parameters are combined to form a property
* id.
*/
public EscherProperty(short propertyNumber, boolean isComplex, boolean isBlipId) {
_id = (short)(propertyNumber +
(isComplex ? 0x8000 : 0x0) +
(isBlipId ? 0x4000 : 0x0));
}
public short getId() {
return _id;
}
public short getPropertyNumber() {
return (short) (_id & (short) 0x3FFF);
}
public boolean isComplex() {
return (_id & (short) 0x8000) != 0;
}
public boolean isBlipId() {
return (_id & (short) 0x4000) != 0;
}
public String getName() {
return EscherProperties.getPropertyName(_id);
}
/**
* Most properties are just 6 bytes in length. Override this if we're
* dealing with complex properties.
*/
public int getPropertySize() {
return 6;
}
/**
* Escher properties consist of a simple fixed length part and a complex variable length part.
* The fixed length part is serialized first.
*/
abstract public int serializeSimplePart( byte[] data, int pos );
/**
* Escher properties consist of a simple fixed length part and a complex variable length part.
* The fixed length part is serialized first.
*/
abstract public int serializeComplexPart( byte[] data, int pos );
}