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/*
* #%L
* JAXX :: Runtime
* %%
* Copyright (C) 2008 - 2017 CodeLutin
* %%
* This program 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 3 of the
* License, or (at your option) any later version.
*
* 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 Lesser Public License for more details.
*
* You should have received a copy of the GNU General Lesser Public
* License along with this program. If not, see
* .
* #L%
*/
package org.nuiton.jaxx.runtime.css;
import org.nuiton.jaxx.runtime.JAXXObject;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.WeakHashMap;
public class Pseudoclasses {
public static final String NO_PSEUDOCLASS = "no pseudoclass";
private static final Map>> properties = new WeakHashMap<>();
private static class PropertyValue implements Comparable {
private final Object value;
private final int id;
public PropertyValue(Object value, int id) {
this.value = value;
this.id = id;
}
public Object getValue() {
return value;
}
public int getId() {
return id;
}
@Override
public int compareTo(PropertyValue o) {
return getId() - o.getId();
}
@Override
public boolean equals(Object o) {
if (!(o instanceof PropertyValue)) {
return false;
}
PropertyValue that = (PropertyValue) o;
if (that.getId() != getId()) {
return false;
}
if (that.getValue() == null) {
return getValue() == null;
}
return that.getValue().equals(getValue());
}
@Override
public int hashCode() {
return (value != null ? value.hashCode() : 0) ^ id;
}
@Override
public String toString() {
return "PropertyValue[" + value + ", " + id + "]";
}
}
private static List getPropertyList(Object object, String property) {
Map> propertyMap = properties.computeIfAbsent(object, k -> new HashMap<>());
List propertyList = propertyMap.computeIfAbsent(property, k -> new ArrayList<>());
return propertyList;
}
public static boolean isPropertyApplied(Object object, String property, int id) {
for (PropertyValue aPropertyList : getPropertyList(object, property)) {
if (aPropertyList.getId() == id) {
return true;
}
}
return false;
}
public static void propertyApplied(Object object, String property, Object value, int id) {
List propertyList = getPropertyList(object, property);
propertyList.add(new PropertyValue(value, id));
Collections.sort(propertyList);
}
public static void propertyRemoved(Object object, String property, Object value, int id) {
List propertyList = getPropertyList(object, property);
propertyList.remove(new PropertyValue(value, id));
}
public static Object getCurrentValue(Object object, String property) {
List propertyList = getPropertyList(object, property);
if (propertyList.size() > 0) {
return propertyList.get(propertyList.size() - 1).getValue();
}
return NO_PSEUDOCLASS;
}
public static Object applyProperty(JAXXObject parent, Object object, String property, Object newValue, Object currentValue, int id) {
if (!isPropertyApplied(object, property, id)) {
Object value = getCurrentValue(object, property);
if (value == NO_PSEUDOCLASS) {
propertyApplied(object, property, wrap(currentValue), -1);
}
propertyApplied(object, property, wrap(newValue), id);
value = getCurrentValue(object, property);
if (value instanceof DataBinding) {
parent.applyDataBinding(((DataBinding) value).getId());
}
return value;
} else {
return currentValue;
}
}
public static Object removeProperty(JAXXObject parent, Object object, String property, Object oldValue, Object currentValue, int id) {
if (isPropertyApplied(object, property, id)) {
Object value = getCurrentValue(object, property);
if (value == NO_PSEUDOCLASS) {
throw new IllegalStateException("found NO_PSEUDOCLASS value for a property which does not have a default value");
}
if (value instanceof DataBinding) {
parent.removeDataBinding(((DataBinding) value).getId());
}
propertyRemoved(object, property, wrap(oldValue), id);
value = getCurrentValue(object, property);
return value;
} else {
return currentValue;
}
}
public static Object wrap(boolean value) {
return value;
}
public static Object wrap(byte value) {
return value;
}
public static Object wrap(short value) {
return value;
}
public static Object wrap(int value) {
return value;
}
public static Object wrap(long value) {
return value;
}
public static Object wrap(float value) {
return value;
}
public static Object wrap(double value) {
return value;
}
public static Object wrap(char value) {
return value;
}
public static Object wrap(Object value) {
return value;
}
}
