com.codename1.properties.SetProperty Maven / Gradle / Ivy
/*
* Copyright (c) 2012, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codename1.properties;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
/**
* Base class for a property as a set which can contain multiple elements within
*/
public class SetProperty extends CollectionProperty {
private Set value = new HashSet();
/**
* Constructs a property with the given name and value
* @param name the name of the property
* @param values default values for the property
*/
public SetProperty(String name, T... values) {
this(name, null, values);
}
/**
* Constructs a property with the given name and values by specifying the
* type of the elements explicitly. The element type needs to be specified
* if the set should contain {@link PropertyBusinessObject}s and needs
* to get deserialized properly!
* @param name the name of the property
* @param elementType subclass of {@link PropertyBusinessObject}
* @param values default values for the property
*/
public SetProperty(String name, Class elementType, T... values) {
super(name, elementType);
for(T t : values) {
value.add(t);
}
}
/**
* Constructs a property with null value
* @param name the name of the property
*/
public SetProperty(String name) {
super(name);
}
/**
* The size of the property set
* @return the number of elements
*/
public int size() {
internalGet();
return value.size();
}
/**
* Sets the entire content of the property
* @param t the collection of elements to set
* @return the parent object for chaining
*/
public K set(Collection t) {
value.clear();
value.addAll(t);
firePropertyChanged();
internalSet();
return (K)parent.parent;
}
/**
* Adds a property value to the set and fires a change event if it changed the set
* @param v the new value
*/
public K add(T v) {
if (value.add(v)) {
firePropertyChanged();
internalSet();
}
return (K)parent.parent;
}
/**
* Adds a collection of values to the set and fires a change event if it changed the set
* @param v the new value
*/
public K addAll(Collection v) {
if (value.addAll(v)) {
firePropertyChanged();
internalSet();
}
return (K)parent.parent;
}
/**
* Removes the given item from the set and fires a change event if this item has been successfully removed
* @param v the item to remove
*/
public K remove(T v) {
if (value.remove(v)) {
firePropertyChanged();
internalSet();
}
return (K)parent.parent;
}
/**
* Removes the given item from the set and fires a change event if this item has been successfully removed
* @param v the item to remove
*/
public K remove(int v) {
for(T o : value) {
if(v == 0) {
return remove(o);
}
v--;
}
return (K)parent.parent;
}
/**
* Removes from the set all values from the given collection and fires a change event if the set has changed
* @param the item to remove
*/
public K removeAll(Collection v) {
if (value.removeAll(v)) {
firePropertyChanged();
internalSet();
}
return (K)parent.parent;
}
/**
* Compares this property to another property
* @param obj the other property
* @return true if they are equal in name and value
*/
@Override
public boolean equals(Object obj) {
if(!super.equals(obj)) {
return false;
}
SetProperty other = (SetProperty) obj;
return other.value.equals(value);
}
/**
* Returns the internal hashcode or 0 for null property
* @return the hashcode value
*/
@Override
public int hashCode() {
return value.hashCode();
}
/**
* Iterate over the elements of the property
* @return an iterator
*/
public Iterator iterator() {
internalGet();
return value.iterator();
}
/**
* Returns a copy of the content as a new list
* @return a list
*/
public List asList() {
internalGet();
return new ArrayList(value);
}
/**
* Returns a copy of the content as a new list but if the value is a PropertyBusinessObject it will
* be converted to a Map
* @return a list
*/
public List