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/*
Wotonomy: OpenStep design patterns for pure Java applications.
Copyright (C) 2000 Blacksmith, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, see http://www.gnu.org
*/
package net.wotonomy.web;
import java.util.Collection;
import java.util.Iterator;
import net.wotonomy.foundation.NSDictionary;
public class WORepetition extends WODynamicElement {
private static final long serialVersionUID = -8039846464450349317L;
protected int count;
protected int index;
protected Object item;
protected Collection list;
protected Iterator iterator;
protected WORepetition() {
super();
}
public WORepetition(String aName, NSDictionary aMap, WOElement template) {
super(aName, aMap, template);
}
public void setCount(int value) {
count = value;
}
public int count() {
return count;
}
public void setIndex(int value) {
index = value;
}
public int index() {
return index;
}
public void setItem(Object value) {
item = value;
}
public Object item() {
return item;
}
public void setList(Collection value) {
list = value;
}
public Collection list() {
return list;
}
@Override
public void takeValuesFromRequest(WORequest r, WOContext c) {
c.appendZeroElementIDComponent();
pullValuesFromParent(c.component());
index = 0;
WOAssociation countAsoc = (WOAssociation) associations.objectForKey("count");
item = getNextItem();
while (item != null) {
pushValuesToParent(c.component());
rootElement.takeValuesFromRequest(r, c);
index++;
c.incrementLastElementIDComponent();
if (countAsoc != null && index >= count())
item = null;
else
item = getNextItem();
}
iterator = null;
c.deleteLastElementIDComponent();
}
@Override
public WOActionResults invokeAction(WORequest r, WOContext c) {
c.appendZeroElementIDComponent();
pullValuesFromParent(c.component());
index = 0;
WOAssociation countAsoc = (WOAssociation) associations.objectForKey("count");
item = getNextItem();
while (item != null) {
pushValuesToParent(c.component());
WOActionResults e = rootElement.invokeAction(r, c);
if (e != null) {
iterator = null;
return e;
}
index++;
c.incrementLastElementIDComponent();
if (countAsoc != null && index >= count())
item = null;
else
item = getNextItem();
}
iterator = null;
c.deleteLastElementIDComponent();
return null;
}
@Override
public void appendToResponse(WOResponse r, WOContext c) {
c.appendZeroElementIDComponent();
pullValuesFromParent(c.component());
index = 0;
WOAssociation countAsoc = (WOAssociation) associations.objectForKey("count");
item = getNextItem();
while (item != null) {
pushValuesToParent(c.component());
rootElement.appendToResponse(r, c);
index++;
c.incrementLastElementIDComponent();
if (countAsoc != null || index < count())
item = null;
else
item = getNextItem();
}
iterator = null;
c.deleteLastElementIDComponent();
}
protected Object getNextItem() {
if (iterator == null) {
if (list == null)
return null;
iterator = list.iterator();
}
if (iterator.hasNext()) {
return iterator.next();
}
return null;
}
protected void pullValuesFromParent(WOComponent c) {
Object value;
value = valueForProperty("count", c);
if (value instanceof Number) {
setCount(((Number) value).intValue());
} else {
setCount(-1);
}
value = valueForProperty("list", c);
if (value instanceof Collection) {
setList((Collection) value);
} else {
setList(null);
}
}
protected void pushValuesToParent(WOComponent c) {
setValueForProperty("index", new Integer(index), c);
setValueForProperty("item", item, c);
}
}
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