Module javafx.base
Package javafx.collections

## Class ModifiableObservableListBase<E>

- java.lang.Object
- - java.util.AbstractCollection<E>
  - - java.util.AbstractList<E>
    - - javafx.collections.ObservableListBase<E>
      - - javafx.collections.ModifiableObservableListBase<E>

- Type Parameters:
    `E` - the type of the elements contained in the List
  All Implemented Interfaces:
    `Iterable<E>`, `Collection<E>`, `List<E>`, `Observable`, `ObservableList<E>`

      public abstract class ModifiableObservableListBase<E>
      extends ObservableListBase<E>

  Abstract class that serves as a base class for `ObservableList` implementations that are modifiable. To implement a modifiable `ObservableList` class, you just need to implement the following set of methods:
  - `get(int)`
  - `size()`
  - `doAdd(int, Object)`
  - `doRemove(int)`
  - `doSet(int, Object)`
  and the notifications and built and fired automatically for you.

  Example of a simple `ObservableList` delegating to another `List` would look like this:

         public class ArrayObservableList<E> extends ModifiableObservableList<E> {

         private final List<E> delegate = new ArrayList<>();

         public E get(int index) {
             return delegate.get(index);
         }

         public int size() {
             return delegate.size();
         }

         protected void doAdd(int index, E element) {
             delegate.add(index, element);
         }

         protected E doSet(int index, E element) {
             return delegate.set(index, element);
         }

         protected E doRemove(int index) {
             return delegate.remove(index);
         }

  Since:
    JavaFX 8.0
  See Also:
    `ObservableListBase`

- - ### Field Summary

    - ### Fields inherited from class java.util.AbstractList

      `modCount`

  - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `ModifiableObservableListBase()` |

  - ### Method Summary

    All Methods Instance Methods Abstract Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `void` | `add​(int index, E element)` |
    `boolean` | `addAll​(int index, Collection<? extends E> c)` |
    `boolean` | `addAll​(Collection<? extends E> c)` |
    `protected abstract void` | `doAdd​(int index, E element)` | Adds the `element` to the List at the position of `index`.
    `protected abstract E` | `doRemove​(int index)` | Removes the element at position of `index`.
    `protected abstract E` | `doSet​(int index, E element)` | Sets the `element` in the List at the position of `index`.
    `abstract E` | `get​(int index)` |
    `E` | `remove​(int index)` |
    `boolean` | `remove​(Object o)` |
    `boolean` | `removeAll​(Collection<?> c)` |
    `protected void` | `removeRange​(int fromIndex, int toIndex)` |
    `boolean` | `retainAll​(Collection<?> c)` |
    `E` | `set​(int index, E element)` |
    `boolean` | `setAll​(Collection<? extends E> col)` | Clears the ObservableList and adds all elements from the collection.
    `abstract int` | `size()` |
    `List<E>` | `subList​(int fromIndex, int toIndex)` |

    - ### Methods inherited from class javafx.collections.ObservableListBase

      `addAll, addListener, addListener, beginChange, endChange, fireChange, hasListeners, nextAdd, nextPermutation, nextRemove, nextRemove, nextReplace, nextSet, nextUpdate, remove, removeAll, removeListener, removeListener, retainAll, setAll`

    - ### Methods inherited from class java.util.AbstractList

      `add, clear, equals, hashCode, indexOf, iterator, lastIndexOf, listIterator, listIterator`

    - ### Methods inherited from class java.util.AbstractCollection

      `contains, containsAll, isEmpty, toArray, toArray, toString`

    - ### Methods inherited from class java.lang.Object

      `clone, finalize, getClass, notify, notifyAll, 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

      `add, clear, contains, containsAll, equals, hashCode, indexOf, isEmpty, iterator, lastIndexOf, listIterator, listIterator, replaceAll, sort, spliterator, toArray, toArray`

    - ### Methods inherited from interface javafx.collections.ObservableList

      `filtered, sorted, sorted`

- - ### Constructor Detail

    - #### ModifiableObservableListBase

          public ModifiableObservableListBase()

  - ### Method Detail

    - #### setAll

          public boolean setAll​(Collection<? extends E> col)

      Description copied from interface: `ObservableList`
      Clears the ObservableList and adds all elements from the collection.
      Specified by:
        `setAll` in interface `ObservableList<E>`
      Overrides:
        `setAll` in class `ObservableListBase<E>`
      Parameters:
        `col` - the collection with elements that will be added to this observableArrayList
      Returns:
        true (as specified by Collection.add(E))

    - #### addAll

          public boolean addAll​(Collection<? extends E> c)

      Specified by:
        `addAll` in interface `Collection<E>`
      Specified by:
        `addAll` in interface `List<E>`
      Overrides:
        `addAll` in class `AbstractCollection<E>`

    - #### addAll

          public boolean addAll​(int index,
                                Collection<? extends E> c)

      Specified by:
        `addAll` in interface `List<E>`
      Overrides:
        `addAll` in class `AbstractList<E>`

    - #### removeRange

          protected void removeRange​(int fromIndex,
                                     int toIndex)

      Overrides:
        `removeRange` in class `AbstractList<E>`

    - #### removeAll

          public boolean removeAll​(Collection<?> c)

      Specified by:
        `removeAll` in interface `Collection<E>`
      Specified by:
        `removeAll` in interface `List<E>`
      Overrides:
        `removeAll` in class `AbstractCollection<E>`

    - #### retainAll

          public boolean retainAll​(Collection<?> c)

      Specified by:
        `retainAll` in interface `Collection<E>`
      Specified by:
        `retainAll` in interface `List<E>`
      Overrides:
        `retainAll` in class `AbstractCollection<E>`

    - #### add

          public void add​(int index,
                          E element)

      Specified by:
        `add` in interface `List<E>`
      Overrides:
        `add` in class `AbstractList<E>`

    - #### set

          public E set​(int index,
                       E element)

      Specified by:
        `set` in interface `List<E>`
      Overrides:
        `set` in class `AbstractList<E>`

    - #### remove

          public boolean remove​(Object o)

      Specified by:
        `remove` in interface `Collection<E>`
      Specified by:
        `remove` in interface `List<E>`
      Overrides:
        `remove` in class `AbstractCollection<E>`

    - #### remove

          public E remove​(int index)

      Specified by:
        `remove` in interface `List<E>`
      Overrides:
        `remove` in class `AbstractList<E>`

    - #### subList

          public List<E> subList​(int fromIndex,
                                 int toIndex)

      Specified by:
        `subList` in interface `List<E>`
      Overrides:
        `subList` in class `AbstractList<E>`

    - #### get

          public abstract E get​(int index)

      Specified by:
        `get` in interface `List<E>`
      Specified by:
        `get` in class `AbstractList<E>`

    - #### size

          public abstract int size()

      Specified by:
        `size` in interface `Collection<E>`
      Specified by:
        `size` in interface `List<E>`
      Specified by:
        `size` in class `AbstractCollection<E>`

    - #### doAdd

          protected abstract void doAdd​(int index,
                                        E element)

      Adds the `element` to the List at the position of `index`.

      For the description of possible exceptions, please refer to the documentation of `AbstractList.add(java.lang.Object)` method.

      Parameters:
        `index` - the position where to add the element
        `element` - the element that will be added
      Throws:
        `ClassCastException` - if the type of the specified element is incompatible with this list
        `NullPointerException` - if the specified arguments contain one or more null elements
        `IllegalArgumentException` - if some property of this element prevents it from being added to this list
        `IndexOutOfBoundsException` - if the index is out of range `(index < 0 || index > size())`

    - #### doSet

          protected abstract E doSet​(int index,
                                     E element)

      Sets the `element` in the List at the position of `index`.

      For the description of possible exceptions, please refer to the documentation of `set(int, java.lang.Object)` method.

      Parameters:
        `index` - the position where to set the element
        `element` - the element that will be set at the specified position
      Returns:
        the old element at the specified position
      Throws:
        `ClassCastException` - if the type of the specified element is incompatible with this list
        `NullPointerException` - if the specified arguments contain one or more null elements
        `IllegalArgumentException` - if some property of this element prevents it from being added to this list
        `IndexOutOfBoundsException` - if the index is out of range `(index < 0 || index >= size())`

    - #### doRemove

          protected abstract E doRemove​(int index)

      Removes the element at position of `index`.
      Parameters:
        `index` - the index of the removed element
      Returns:
        the removed element
      Throws:
        `IndexOutOfBoundsException` - if the index is out of range `(index < 0 || index >= size())`