Package com.gargoylesoftware.base.collections

Class NotificationList

  • All Implemented Interfaces:
    java.lang.Iterable, java.util.Collection, java.util.List
    public class NotificationList
extends java.lang.Object
implements java.util.List
    This is a wrapper for a List object that fires NotificationListEvent's whenever the list is modified.
    Version:
    $Revision: 1.4 $

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private java.util.List delegate_  
      private java.util.List listenerList_  

    • Constructor Summary

      Constructors 
      Constructor Description
      NotificationList​(java.util.List delegate)
      Construct a new NotificationList.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void add​(int index, java.lang.Object element)
      Inserts the specified element at the specified position in this list (optional operation).
      boolean add​(java.lang.Object object)
      Appends the specified element to the end of this list (optional operation).
      boolean addAll​(int index, java.util.Collection collection)
      Inserts all of the elements in the specified collection into this list at the specified position (optional operation).
      boolean addAll​(java.util.Collection collection)
      Appends all of the elements in the specified collection to the end of this list, in the order that they are returned by the specified collection's iterator (optional operation).
      void addNotificationListListener​(NotificationListListener listener)
      Add a NotificationListListener.
      private void assertNotNull​(java.lang.String fieldName, java.lang.Object object)  
      void clear()
      Removes all of the elements from this list (optional operation).
      boolean contains​(java.lang.Object object)
      Returns true if this list contains the specified element.
      boolean containsAll​(java.util.Collection collection)
      Returns true if this list contains all of the elements of the specified collection.
      private void fireChanged​(int startIndex, java.util.List oldValues, java.util.List newValues)
      Fire a changed event.
      private void fireInsert​(int startIndex, int insertCount)
      Fire an insert event.
      private void fireRemove​(int startIndex, int endIndex, java.util.List objectsRemoved)
      Fire a remove event.
      java.lang.Object get​(int index)
      Returns the element at the specified position in this list.
      int indexOf​(java.lang.Object object)
      Returns the index in this list of the first occurrence of the specified element, or -1 if this list does not contain this element.
      boolean isEmpty()
      Returns true if this list contains no elements.
      java.util.Iterator iterator()
      Returns an iterator over the elements in this list in proper sequence.
      int lastIndexOf​(java.lang.Object object)
      Returns the index in this list of the last occurrence of the specified element, or -1 if this list does not contain this element.
      java.util.ListIterator listIterator()
      Returns a list iterator of the elements in this list (in proper sequence).
      java.util.ListIterator listIterator​(int index)
      Returns a list iterator of the elements in this list (in proper sequence), starting at the specified position in this list.
      java.lang.Object remove​(int index)
      Removes the element at the specified position in this list (optional operation).
      boolean remove​(java.lang.Object object)
      Removes the first occurrence in this list of the specified element (optional operation).
      boolean removeAll​(java.util.Collection collection)
      Removes from this list all the elements that are contained in the specified collection (optional operation).
      void removeNotificationListListener​(NotificationListListener listener)
      Remove a NotificationListListener.
      boolean retainAll​(java.util.Collection collection)
      Retains only the elements in this list that are contained in the specified collection (optional operation).
      java.lang.Object set​(int index, java.lang.Object element)
      Replaces the element at the specified position in this list with the specified element (optional operation).
      int size()
      Returns the number of elements in this list.
      java.util.List subList​(int fromIndex, int toIndex)
      Returns a view of the portion of this list between the specified fromIndex, inclusive, and toIndex, exclusive.
      java.lang.Object[] toArray()
      Returns an array containing all of the elements in this list in proper sequence.
      java.lang.Object[] toArray​(java.lang.Object[] array)
      Returns an array containing all of the elements in this list in proper sequence; the runtime type of the returned array is that of the specified array.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

      • Methods inherited from interface java.util.Collection

        parallelStream, removeIf, stream, toArray

      • Methods inherited from interface java.lang.Iterable

        forEach

      • Methods inherited from interface java.util.List

        equals, hashCode, replaceAll, sort, spliterator

    • Field Detail

      • delegate_

        private final java.util.List delegate_

      • listenerList_

        private final java.util.List listenerList_

    • Constructor Detail

      • NotificationList

        public NotificationList​(java.util.List delegate)
        Construct a new NotificationList.
        Parameters:
        delegate - The list that we will delegate requests to.

    • Method Detail

      • add

        public boolean add​(java.lang.Object object)
            throws java.lang.UnsupportedOperationException
        Appends the specified element to the end of this list (optional operation).

        Lists that support this operation may place limitations on what elements may be added to this list. In particular, some lists will refuse to add null elements, and others will impose restrictions on the type of elements that may be added. List classes should clearly specify in their documentation any restrictions on what elements may be added.

        Specified by:
        add in interface java.util.Collection
        Specified by:
        add in interface java.util.List
        Parameters:
        object - element to be appended to this list.
        Returns:
        true (as per the general contract of the Collection.add method).
        Throws:
        java.lang.UnsupportedOperationException - if the add method is not supported by this list.

      • add

        public void add​(int index,
                java.lang.Object element)
         throws java.lang.UnsupportedOperationException
        Inserts the specified element at the specified position in this list (optional operation). Shifts the element currently at that position (if any) and any subsequent elements to the right (adds one to their indices).
        Specified by:
        add in interface java.util.List
        Parameters:
        index - index at which the specified element is to be inserted.
        element - element to be inserted.
        Throws:
        java.lang.UnsupportedOperationException - if the add method is not supported by this list.

      • addAll

        public boolean addAll​(java.util.Collection collection)
               throws java.lang.UnsupportedOperationException
        Appends all of the elements in the specified collection to the end of this list, in the order that they are returned by the specified collection's iterator (optional operation). The behavior of this operation is unspecified if the specified collection is modified while the operation is in progress. (Note that this will occur if the specified collection is this list, and it's nonempty.)
        Specified by:
        addAll in interface java.util.Collection
        Specified by:
        addAll in interface java.util.List
        Parameters:
        collection - collection whose elements are to be added to this list.
        Returns:
        true if this list changed as a result of the call.
        Throws:
        java.lang.UnsupportedOperationException - if the addAll method is not supported by this list.
        See Also:
        add(Object)

      • addAll

        public boolean addAll​(int index,
                      java.util.Collection collection)
               throws java.lang.UnsupportedOperationException
        Inserts all of the elements in the specified collection into this list at the specified position (optional operation). Shifts the element currently at that position (if any) and any subsequent elements to the right (increases their indices). The new elements will appear in this list in the order that they are returned by the specified collection's iterator. The behavior of this operation is unspecified if the specified collection is modified while the operation is in progress. (Note that this will occur if the specified collection is this list, and it's nonempty.)
        Specified by:
        addAll in interface java.util.List
        Parameters:
        index - index at which to insert first element from the specified collection.
        collection - elements to be inserted into this list.
        Returns:
        true if this list changed as a result of the call.
        Throws:
        java.lang.UnsupportedOperationException - if the addAll method is not supported by this list.

      • get

        public java.lang.Object get​(int index)
        Returns the element at the specified position in this list.
        Specified by:
        get in interface java.util.List
        Parameters:
        index - index of element to return.
        Returns:
        the element at the specified position in this list.

      • set

        public java.lang.Object set​(int index,
                            java.lang.Object element)
                     throws java.lang.UnsupportedOperationException
        Replaces the element at the specified position in this list with the specified element (optional operation).
        Specified by:
        set in interface java.util.List
        Parameters:
        index - index of element to replace.
        element - element to be stored at the specified position.
        Returns:
        the element previously at the specified position.
        Throws:
        java.lang.UnsupportedOperationException - if the set method is not supported by this list.

      • remove

        public java.lang.Object remove​(int index)
                        throws java.lang.UnsupportedOperationException
        Removes the element at the specified position in this list (optional operation). Shifts any subsequent elements to the left (subtracts one from their indices). Returns the element that was removed from the list.
        Specified by:
        remove in interface java.util.List
        Parameters:
        index - the index of the element to removed.
        Returns:
        the element previously at the specified position.
        Throws:
        java.lang.UnsupportedOperationException - if the remove method is not supported by this list.

      • remove

        public boolean remove​(java.lang.Object object)
               throws java.lang.UnsupportedOperationException
        Removes the first occurrence in this list of the specified element (optional operation). If this list does not contain the element, it is unchanged. More formally, removes the element with the lowest index i such that (o==null ? get(i)==null : o.equals(get(i))) (if such an element exists).
        Specified by:
        remove in interface java.util.Collection
        Specified by:
        remove in interface java.util.List
        Parameters:
        object - element to be removed from this list, if present.
        Returns:
        true if this list contained the specified element.
        Throws:
        java.lang.UnsupportedOperationException - if the remove method is not supported by this list.

      • removeAll

        public boolean removeAll​(java.util.Collection collection)
                  throws java.lang.UnsupportedOperationException
        Removes from this list all the elements that are contained in the specified collection (optional operation). Implementation note This is currently unsupported.
        Specified by:
        removeAll in interface java.util.Collection
        Specified by:
        removeAll in interface java.util.List
        Parameters:
        collection - collection that defines which elements will be removed from this list.
        Returns:
        true if this list changed as a result of the call.
        Throws:
        java.lang.UnsupportedOperationException - if the removeAll method is not supported by this list.
        See Also:
        remove(Object), contains(Object)

      • retainAll

        public boolean retainAll​(java.util.Collection collection)
                  throws java.lang.UnsupportedOperationException
        Retains only the elements in this list that are contained in the specified collection (optional operation). In other words, removes from this list all the elements that are not contained in the specified collection. Implementation note This is currently unsupported.
        Specified by:
        retainAll in interface java.util.Collection
        Specified by:
        retainAll in interface java.util.List
        Parameters:
        collection - collection that defines which elements this set will retain.
        Returns:
        true if this list changed as a result of the call.
        Throws:
        java.lang.UnsupportedOperationException - if the retainAll method is not supported by this list.
        See Also:
        remove(Object), contains(Object)

      • indexOf

        public int indexOf​(java.lang.Object object)
        Returns the index in this list of the first occurrence of the specified element, or -1 if this list does not contain this element. More formally, returns the lowest index i such that (o==null ? get(i)==null : o.equals(get(i))), or -1 if there is no such index.
        Specified by:
        indexOf in interface java.util.List
        Parameters:
        object - element to search for.
        Returns:
        the index in this list of the first occurrence of the specified element, or -1 if this list does not contain this element.

      • lastIndexOf

        public int lastIndexOf​(java.lang.Object object)
        Returns the index in this list of the last occurrence of the specified element, or -1 if this list does not contain this element. More formally, returns the highest index i such that (o==null ? get(i)==null : o.equals(get(i))), or -1 if there is no such index.
        Specified by:
        lastIndexOf in interface java.util.List
        Parameters:
        object - element to search for.
        Returns:
        the index in this list of the last occurrence of the specified element, or -1 if this list does not contain this element.

      • listIterator

        public java.util.ListIterator listIterator()
        Returns a list iterator of the elements in this list (in proper sequence).
        Specified by:
        listIterator in interface java.util.List
        Returns:
        a list iterator of the elements in this list (in proper sequence).

      • listIterator

        public java.util.ListIterator listIterator​(int index)
        Returns a list iterator of the elements in this list (in proper sequence), starting at the specified position in this list. The specified index indicates the first element that would be returned by an initial call to the next method. An initial call to the previous method would return the element with the specified index minus one.
        Specified by:
        listIterator in interface java.util.List
        Parameters:
        index - index of first element to be returned from the list iterator (by a call to the next method).
        Returns:
        a list iterator of the elements in this list (in proper sequence), starting at the specified position in this list.

      • subList

        public java.util.List subList​(int fromIndex,
                              int toIndex)
        Returns a view of the portion of this list between the specified fromIndex, inclusive, and toIndex, exclusive. (If fromIndex and toIndex are equal, the returned list is empty.) The returned list is backed by this list, so changes in the returned list are reflected in this list, and vice-versa. The returned list supports all of the optional list operations supported by this list.

        This method eliminates the need for explicit range operations (of the sort that commonly exist for arrays). Any operation that expects a list can be used as a range operation by passing a subList view instead of a whole list. For example, the following idiom removes a range of elements from a list: 

                    list.subList(from, to).clear();
        Similar idioms may be constructed for indexOf and lastIndexOf, and all of the algorithms in the Collections class can be applied to a subList.

        The semantics of this list returned by this method become undefined if the backing list (i.e., this list) is structurally modified in any way other than via the returned list. (Structural modifications are those that change the size of this list, or otherwise perturb it in such a fashion that iterations in progress may yield incorrect results.)

        Specified by:
        subList in interface java.util.List
        Parameters:
        fromIndex - low endpoint (inclusive) of the subList.
        toIndex - high endpoint (exclusive) of the subList.
        Returns:
        a view of the specified range within this list.

      • iterator

        public java.util.Iterator iterator()
        Returns an iterator over the elements in this list in proper sequence.
        Specified by:
        iterator in interface java.util.Collection
        Specified by:
        iterator in interface java.lang.Iterable
        Specified by:
        iterator in interface java.util.List
        Returns:
        an iterator over the elements in this list in proper sequence.

      • containsAll

        public boolean containsAll​(java.util.Collection collection)
        Returns true if this list contains all of the elements of the specified collection.
        Specified by:
        containsAll in interface java.util.Collection
        Specified by:
        containsAll in interface java.util.List
        Parameters:
        collection - collection to be checked for containment in this list.
        Returns:
        true if this list contains all of the elements of the specified collection.
        See Also:
        contains(Object)

      • contains

        public boolean contains​(java.lang.Object object)
        Returns true if this list contains the specified element. More formally, returns true if and only if this list contains at least one element e such that (o==null ? e==null : o.equals(e)).
        Specified by:
        contains in interface java.util.Collection
        Specified by:
        contains in interface java.util.List
        Parameters:
        object - element whose presence in this list is to be tested.
        Returns:
        true if this list contains the specified element.

      • clear

        public void clear()
           throws java.lang.UnsupportedOperationException
        Removes all of the elements from this list (optional operation). This list will be empty after this call returns (unless it throws an exception).
        Specified by:
        clear in interface java.util.Collection
        Specified by:
        clear in interface java.util.List
        Throws:
        java.lang.UnsupportedOperationException - if the clear method is not supported by this list.

      • isEmpty

        public boolean isEmpty()
        Returns true if this list contains no elements.
        Specified by:
        isEmpty in interface java.util.Collection
        Specified by:
        isEmpty in interface java.util.List
        Returns:
        true if this list contains no elements.

      • size

        public int size()
        Returns the number of elements in this list. If this list contains more than Integer.MAX_VALUE elements, returns Integer.MAX_VALUE.
        Specified by:
        size in interface java.util.Collection
        Specified by:
        size in interface java.util.List
        Returns:
        the number of elements in this list.

      • toArray

        public java.lang.Object[] toArray()
        Returns an array containing all of the elements in this list in proper sequence. Obeys the general contract of the List.toArray method.
        Specified by:
        toArray in interface java.util.Collection
        Specified by:
        toArray in interface java.util.List
        Returns:
        an array containing all of the elements in this list in proper sequence.
        See Also:
        List.toArray(Object[])

      • toArray

        public java.lang.Object[] toArray​(java.lang.Object[] array)
                           throws java.lang.ArrayStoreException
        Returns an array containing all of the elements in this list in proper sequence; the runtime type of the returned array is that of the specified array. Obeys the general contract of the Collection.toArray(Object[]) method.
        Specified by:
        toArray in interface java.util.Collection
        Specified by:
        toArray in interface java.util.List
        Parameters:
        array - the array into which the elements of this list are to be stored, if it is big enough; otherwise, a new array of the same runtime type is allocated for this purpose.
        Returns:
        an array containing the elements of this list.
        Throws:
        java.lang.ArrayStoreException - if the runtime type of the specified array is not a supertype of the runtime type of every element in this list.

      • addNotificationListListener

        public void addNotificationListListener​(NotificationListListener listener)
        Add a NotificationListListener.
        Parameters:
        listener - The listener to add.

      • removeNotificationListListener

        public void removeNotificationListListener​(NotificationListListener listener)
        Remove a NotificationListListener.
        Parameters:
        listener - The listener to remove.

      • fireInsert

        private void fireInsert​(int startIndex,
                        int insertCount)
        Fire an insert event.
        Parameters:
        startIndex - The first index
        insertCount - The number of items being inserted

      • fireRemove

        private void fireRemove​(int startIndex,
                        int endIndex,
                        java.util.List objectsRemoved)
        Fire a remove event.
        Parameters:
        startIndex - The first index
        endIndex - The last index
        objectsRemoved - A list of all the objects that have been removd.

      • fireChanged

        private void fireChanged​(int startIndex,
                         java.util.List oldValues,
                         java.util.List newValues)
        Fire a changed event.
        Parameters:
        startIndex - The first index
        oldValues - The old values
        newValues - The new values

      • assertNotNull

        private void assertNotNull​(java.lang.String fieldName,
                           java.lang.Object object)