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/*
* Copyright (C) 2008 Steve Ratcliffe
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*
* Author: Steve Ratcliffe
* Create date: 07-Dec-2008
*/
package uk.me.parabola.mkgmap.osmstyle.actions;
import uk.me.parabola.mkgmap.reader.osm.Element;
import uk.me.parabola.mkgmap.reader.osm.TagDict;
/**
* Part of a substitution string. This can represent a constant
* value or value that is taken from the element tags.
*
* @author Steve Ratcliffe
*/
public class ValueItem
{
private String tagname
;
private short tagKey
;
private ValueFilter filter
;
private String value
;
private boolean tagname_is_local
;
public ValueItem
() {
}
public ValueItem
(String value
) {
this.
value = value
;
}
public String getValue
(Element el,
Element local_el
) {
if (tagname ==
null && value
!=
null)
return value
; // already known
if (tagname
!=
null) {
Element e = tagname_is_local
? local_el : el
;
String tagval = e.
getTag(tagKey
);
if (filter
!=
null)
value = filter.
filter(tagval,el
);
else
value = tagval
;
}
return value
;
}
public void addFilter
(ValueFilter f
) {
if (filter ==
null)
filter = f
;
else
filter.
add(f
);
}
public String getTagname
() {
return tagname
;
}
public void setTagname
(String tagname,
boolean local
) {
this.
tagname = tagname
;
this.
tagname_is_local = local
;
this.
tagKey = TagDict.
getInstance().
xlate(tagname
);
}
public String toString
() {
if (tagname ==
null)
return value
;
if (tagname_is_local
) {
// TODO: don't ignore filter.
return "$(" + tagname +
")";
} else {
// TODO: don't ignore filter.
return "${" + tagname +
"}";
}
}
}