/*
* 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: 06-Dec-2008
*/
package uk.me.parabola.mkgmap.osmstyle.actions;
import java.util.ArrayList;
import java.util.Formatter;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import uk.me.parabola.mkgmap.reader.osm.Element;
import uk.me.parabola.mkgmap.reader.osm.Relation;
/**
* This is an action that contains sub-actions. It is used for Relations
* where you want to apply the commands to the elements that are contained
* in the relation and not on the relation itself.
*
* @author Steve Ratcliffe
*/
public class SubAction implements Action {
private final List<Action> actionList = new ArrayList<Action>();
private final String role;
private final boolean once;
public SubAction(String role, boolean once) {
this.role = role;
this.once = once;
}
public boolean perform(Element el) {
if (el instanceof Relation)
performOnSubElements((Relation) el);
return true; // probably false, but relation may contain itself in complex recursive structures
}
private void performOnSubElements(Relation rel) {
List<Map.Entry<String,Element>> elements = rel.getElements();
for (Action a : actionList)
if (a instanceof AddTagAction)
((AddTagAction) a).setValueTags(rel);
else if (a instanceof AddAccessAction)
((AddAccessAction) a).setValueTags(rel);
HashSet<Element> elems = once ? new HashSet<Element>() : null;
for (Map.Entry<String,Element> r_el : elements) {
if ((role == null || role.equals(r_el.getKey())) &&
(!once || elems.add(r_el.getValue()))) {
for (Action a : actionList)
a.perform(r_el.getValue());
}
}
}
public void add(Action act) {
actionList.add(act);
}
public String toString() {
Formatter fmt = new Formatter();
fmt.format(once ? "apply_once" : "apply");
if (role != null)
fmt.format(" role=%s ", role);
fmt.format(" {");
for (Iterator<Action> it = actionList.iterator(); it.hasNext();) {
Action a = it.next();
fmt.format(a.toString());
if (it.hasNext())
fmt.format(" ");
}
fmt.format("}");
return fmt.toString();
}
}