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package org.mule.module.launcher.util; |
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import java.beans.PropertyChangeListener; |
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import java.beans.PropertyChangeSupport; |
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import java.util.ArrayList; |
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import java.util.Collection; |
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import java.util.Iterator; |
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import java.util.List; |
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import java.util.ListIterator; |
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public class ObservableList<E> implements List<E> { |
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private List<E> delegate; |
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private PropertyChangeSupport pcs; |
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public ObservableList() { |
41 | 0 | this(new ArrayList<E>()); |
42 | 0 | } |
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44 | 0 | public ObservableList(List<E> delegate) { |
45 | 0 | this.delegate = delegate; |
46 | 0 | pcs = new PropertyChangeSupport(this); |
47 | 0 | } |
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public void add(int index, E element) { |
50 | 0 | delegate.add(index, element); |
51 | 0 | pcs.firePropertyChange(new ElementAddedEvent(this, element, index)); |
52 | 0 | } |
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public boolean addAll(Collection<? extends E> c) { |
56 | 0 | int index = size() - 1; |
57 | 0 | index = index < 0 ? 0 : index; |
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59 | 0 | boolean success = delegate.addAll(c); |
60 | 0 | if (success && c != null) { |
61 | 0 | List<E> values = new ArrayList<E>(); |
62 | 0 | for (E element : values) { |
63 | 0 | values.add(element); |
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} |
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66 | 0 | if (values.size() > 0) { |
67 | 0 | pcs.firePropertyChange(new MultiElementAddedEvent(this, index, values)); |
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} |
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} |
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71 | 0 | return success; |
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} |
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public boolean addAll(int index, Collection<? extends E> c) { |
75 | 0 | boolean success = delegate.addAll(index, c); |
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77 | 0 | if (success && c != null) { |
78 | 0 | List<E> values = new ArrayList<E>(); |
79 | 0 | for (E element : c) { |
80 | 0 | values.add(element); |
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} |
82 | 0 | if (values.size() > 0) { |
83 | 0 | pcs.firePropertyChange(new MultiElementAddedEvent(this, index, values)); |
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} |
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} |
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87 | 0 | return success; |
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} |
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public void clear() { |
91 | 0 | List values = new ArrayList(); |
92 | 0 | values.addAll(delegate); |
93 | 0 | delegate.clear(); |
94 | 0 | if (!values.isEmpty()) { |
95 | 0 | pcs.firePropertyChange(new ElementsClearedEvent(this, values)); |
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} |
97 | 0 | } |
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public boolean contains(Object o) { |
100 | 0 | return delegate.contains(o); |
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} |
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public boolean containsAll(Collection<?> c) { |
104 | 0 | return delegate.containsAll(c); |
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} |
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public boolean equals(Object o) { |
108 | 0 | return delegate.equals(o); |
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} |
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public E get(int index) { |
112 | 0 | return delegate.get(index); |
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} |
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public int hashCode() { |
116 | 0 | return delegate.hashCode(); |
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} |
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public int indexOf(Object o) { |
120 | 0 | return delegate.indexOf(o); |
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} |
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public boolean isEmpty() { |
124 | 0 | return delegate.isEmpty(); |
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} |
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public Iterator<E> iterator() { |
128 | 0 | return new ObservableIterator(delegate.iterator()); |
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} |
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public int lastIndexOf(Object o) { |
132 | 0 | return delegate.lastIndexOf(o); |
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} |
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public ListIterator<E> listIterator() { |
136 | 0 | return new ObservableListIterator(delegate.listIterator(), 0); |
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} |
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public ListIterator<E> listIterator(int index) { |
140 | 0 | return new ObservableListIterator(delegate.listIterator(index), index); |
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} |
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public E remove(int index) { |
144 | 0 | E element = delegate.remove(index); |
145 | 0 | pcs.firePropertyChange(new ElementRemovedEvent(this, element, index)); |
146 | 0 | return element; |
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} |
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public boolean remove(Object o) { |
150 | 0 | int index = delegate.indexOf(o); |
151 | 0 | boolean success = delegate.remove(o); |
152 | 0 | if (success) { |
153 | 0 | pcs.firePropertyChange(new ElementRemovedEvent(this, o, index)); |
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} |
155 | 0 | return success; |
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} |
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public boolean removeAll(Collection<?> c) { |
159 | 0 | if (c == null) { |
160 | 0 | return false; |
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} |
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163 | 0 | List<Object> values = new ArrayList(); |
164 | 0 | for (Object element : c) { |
165 | 0 | if (delegate.contains(element)) { |
166 | 0 | values.add(element); |
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} |
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} |
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170 | 0 | boolean success = delegate.removeAll(c); |
171 | 0 | if (success && !values.isEmpty()) { |
172 | 0 | pcs.firePropertyChange(new MultiElementRemovedEvent(this, values)); |
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} |
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175 | 0 | return success; |
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} |
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public boolean retainAll(Collection<?> c) { |
179 | 0 | if (c == null) { |
180 | 0 | return false; |
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} |
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183 | 0 | List<E> values = new ArrayList<E>(); |
184 | 0 | if (c != null) { |
185 | 0 | for (E element : delegate) { |
186 | 0 | if (!c.contains(element)) { |
187 | 0 | values.add(element); |
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} |
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} |
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} |
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192 | 0 | boolean success = delegate.retainAll(c); |
193 | 0 | if (success && !values.isEmpty()) { |
194 | 0 | pcs.firePropertyChange(new MultiElementRemovedEvent(this, values)); |
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} |
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197 | 0 | return success; |
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} |
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public E set(int index, E element) { |
201 | 0 | E oldValue = delegate.set(index, element); |
202 | 0 | pcs.firePropertyChange(new ElementUpdatedEvent(this, oldValue, element, index)); |
203 | 0 | return oldValue; |
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} |
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public int size() { |
207 | 0 | return delegate.size(); |
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} |
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public List subList(int fromIndex, int toIndex) { |
211 | 0 | return delegate.subList(fromIndex, toIndex); |
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} |
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public Object[] toArray() { |
215 | 0 | return delegate.toArray(); |
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} |
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public boolean add(E o) { |
219 | 0 | boolean success = delegate.add(o); |
220 | 0 | if (success) { |
221 | 0 | pcs.firePropertyChange(new ElementAddedEvent(this, o, size() - 1)); |
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} |
223 | 0 | return success; |
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} |
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public Object[] toArray(Object[] a) { |
228 | 0 | return delegate.toArray(a); |
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} |
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private class ObservableIterator implements Iterator<E> { |
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private Iterator<E> iterDelegate; |
234 | 0 | protected int cursor = 0; |
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236 | 0 | public ObservableIterator(Iterator<E> iterDelegate) { |
237 | 0 | this.iterDelegate = iterDelegate; |
238 | 0 | } |
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public Iterator<E> getDelegate() { |
241 | 0 | return iterDelegate; |
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} |
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public boolean hasNext() { |
245 | 0 | return iterDelegate.hasNext(); |
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} |
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public E next() { |
249 | 0 | cursor++; |
250 | 0 | return iterDelegate.next(); |
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} |
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public void remove() { |
254 | 0 | ObservableList.this.remove(cursor--); |
255 | 0 | } |
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} |
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protected class ObservableListIterator extends ObservableIterator implements ListIterator<E> { |
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260 | 0 | public ObservableListIterator(ListIterator<E> iterDelegate, int index) { |
261 | 0 | super(iterDelegate); |
262 | 0 | cursor = index; |
263 | 0 | } |
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public ListIterator<E> getListIterator() { |
266 | 0 | return (ListIterator<E>) getDelegate(); |
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} |
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public void add(E o) { |
270 | 0 | ObservableList.this.add(o); |
271 | 0 | cursor++; |
272 | 0 | } |
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public boolean hasPrevious() { |
275 | 0 | return getListIterator().hasPrevious(); |
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} |
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public int nextIndex() { |
279 | 0 | return getListIterator().nextIndex(); |
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} |
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public E previous() { |
283 | 0 | return getListIterator().previous(); |
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} |
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public int previousIndex() { |
287 | 0 | return getListIterator().previousIndex(); |
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} |
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public void set(E e) { |
291 | 0 | ObservableList.this.set(cursor, e); |
292 | 0 | } |
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} |
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public void addPropertyChangeListener(PropertyChangeListener listener) { |
299 | 0 | pcs.addPropertyChangeListener(listener); |
300 | 0 | } |
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public void addPropertyChangeListener(String propertyName, PropertyChangeListener listener) { |
303 | 0 | pcs.addPropertyChangeListener(propertyName, listener); |
304 | 0 | } |
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public PropertyChangeListener[] getPropertyChangeListeners() { |
307 | 0 | return pcs.getPropertyChangeListeners(); |
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} |
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public PropertyChangeListener[] getPropertyChangeListeners(String propertyName) { |
311 | 0 | return pcs.getPropertyChangeListeners(propertyName); |
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} |
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public void removePropertyChangeListener(PropertyChangeListener listener) { |
315 | 0 | pcs.removePropertyChangeListener(listener); |
316 | 0 | } |
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public void removePropertyChangeListener(String propertyName, PropertyChangeListener listener) { |
319 | 0 | pcs.removePropertyChangeListener(propertyName, listener); |
320 | 0 | } |
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public boolean hasListeners(String propertyName) { |
323 | 0 | return pcs.hasListeners(propertyName); |
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} |
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} |