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/*******************************************************************************
* Copyright (c) 2009,2010 QNX Software Systems
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* QNX Software Systems (Alena Laskavaia) - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.codan.core.param;
import java.io.IOException;
import java.io.StreamTokenizer;
import java.util.ArrayList;
import java.util.Iterator;
/**
* List implementation of IProblemPreference.
*
* @noextend This class is not intended to be extended by clients.
*/
public class ListProblemPreference extends AbstractProblemPreference implements
IProblemPreferenceCompositeValue, IProblemPreferenceCompositeDescriptor {
protected ArrayList<IProblemPreference> list = new ArrayList<IProblemPreference>(
1);
/**
* @param key
* @param label
*/
public ListProblemPreference(String key, String label) {
setKey(key);
setLabel(label);
}
@Override
public PreferenceType getType() {
return PreferenceType.TYPE_LIST;
}
@Override
public void setType(PreferenceType type) {
throw new UnsupportedOperationException();
}
/**
* Get parameter into for element equal to key's int value.
*
* @throws NumberFormatException
* if key is not number
* @throws ArrayIndexOutOfBoundsException
* is index is out of bound
*/
public IProblemPreference getChildDescriptor(String key)
throws NumberFormatException {
if (key == null) {
// special case if all element are the same return first, if key is
// null
return (IProblemPreference) getChildDescriptor(0).clone();
}
Integer iv = Integer.valueOf(key);
if (iv.intValue() >= list.size()) {
// special case if all element are the same return first clone
IProblemPreference childInfo = (IProblemPreference) getChildDescriptor(
0).clone();
return childInfo;
}
return getChildDescriptor(iv.intValue());
}
/**
* Set i'th element of parameter info, if all are the same i is 0
*
* @param i
* @param info
*/
public void setChildDescriptor(int i, IProblemPreference info) {
if (info != null) {
while (i >= list.size()) {
list.add(null);
}
list.set(i, info);
} else {
while (i == list.size() - 1) {
list.remove(i);
}
}
}
/**
* If all list elements have same info it is enough to set only first one
* (index 0). When value is set for the other it will be replicated.
*/
public void addChildDescriptor(IProblemPreference info) {
Integer iv = Integer.valueOf(info.getKey());
IProblemPreference desc = (IProblemPreference) info.clone();
desc.setParent(this);
setChildDescriptor(iv, desc);
}
public IProblemPreference getChildDescriptor(int i) {
return list.get(i);
}
public IProblemPreference[] getChildDescriptors() {
return list.toArray(new IProblemPreference[list.size()]);
}
public Object getChildValue(String key) {
IProblemPreference childInfo = getChildDescriptor(key);
return childInfo.getValue();
}
public void addChildValue(String key, Object value) {
IProblemPreference pref = getChildDescriptor(key);
pref.setValue(value);
// because descriptor can be phantom we have to set preference forcefully
setChildDescriptor(Integer.parseInt(key), pref);
}
public void removeChildValue(String key) {
int index = Integer.parseInt(key);
list.remove(index);
}
@SuppressWarnings("unchecked")
@Override
public Object clone() {
ListProblemPreference list1 = (ListProblemPreference) super.clone();
list1.list = (ArrayList<IProblemPreference>) list.clone();
return list1;
}
public String exportValue() {
StringBuffer buf = new StringBuffer("("); //$NON-NLS-1$
for (Iterator<IProblemPreference> iterator = list.iterator(); iterator
.hasNext();) {
IProblemPreference d = iterator.next();
buf.append(d.exportValue());
if (iterator.hasNext())
buf.append(","); //$NON-NLS-1$
}
return buf.toString() + ")"; //$NON-NLS-1$
}
public void importValue(String str) {
StreamTokenizer tokenizer = getImportTokenizer(str);
int token;
int index = 0;
try {
token = tokenizer.nextToken();
if (token != '(')
throw new IllegalArgumentException(str);
while (true) {
token = tokenizer.nextToken();
String val = tokenizer.sval;
String ik = String.valueOf(index);
IProblemPreference desc = getChildDescriptor(ik);
if (desc != null) {
desc.importValue(val);
addChildValue(ik, desc.getValue());
}
token = tokenizer.nextToken();
if (token == ')')
break;
if (token != ',')
throw new IllegalArgumentException(str);
index++;
}
} catch (IOException e) {
throw new IllegalArgumentException(str);
}
}
public void removeChildDescriptor(IProblemPreference info) {
list.remove(info);
}
}
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