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## org.apache.fop.layoutmgr
Class KnuthSequence

    java.lang.Object
      java.util.AbstractCollection<E>
          java.util.AbstractList<E>
              java.util.ArrayList
                  org.apache.fop.layoutmgr.KnuthSequence

All Implemented Interfaces:
  java.io.Serializable, java.lang.Cloneable, java.lang.Iterable, java.util.Collection, java.util.List, java.util.RandomAccess

Direct Known Subclasses:
  BlockKnuthSequence, InlineKnuthSequence

    public abstract class KnuthSequence

extends java.util.ArrayList

Represents a list of `Knuth elements`.

See Also:
  Serialized Form

Field Summary

Fields inherited from class java.util.AbstractList
`modCount`

Constructor Summary
`KnuthSequence()` Creates a new and empty list.
`KnuthSequence(java.util.List list)` Creates a new list from an existing list.

Method Summary
`abstract boolean` | `appendSequence(KnuthSequence sequence)` Append sequence to this sequence if it can be appended.
`abstract boolean` | `appendSequence(KnuthSequence sequence, boolean keepTogether, BreakElement breakElement)` Append sequence to this sequence if it can be appended.
`boolean` | `appendSequenceOrClose(KnuthSequence sequence)` Append sequence to this sequence if it can be appended.
`boolean` | `appendSequenceOrClose(KnuthSequence sequence, boolean keepTogether, BreakElement breakElement)` Append sequence to this sequence if it can be appended.
`abstract boolean` | `canAppendSequence(KnuthSequence sequence)` Can sequence be appended to this sequence?
`abstract KnuthSequence` | `endSequence()` Finalizes a Knuth sequence.
`ListElement` | `getElement(int index)`
`protected int` | `getFirstBoxIndex(int startIndex)` Returns the position index of the first box in this sequence, starting at the given index.
`ListElement` | `getLast()`
`abstract boolean` | `isInlineSequence()` Is this an inline or a block sequence?
`ListElement` | `removeLast()` Remove the last element of this sequence.
`void` | `startSequence()` Marks the start of the sequence.
`java.lang.String` | `toString()`
`void` | `wrapPositions(LayoutManager lm)` Wrap the Positions of the elements of this sequence in a Position for LayoutManager lm.

Methods inherited from class java.util.ArrayList
`add, add, addAll, addAll, clear, clone, contains, ensureCapacity, get, indexOf, isEmpty, lastIndexOf, remove, remove, removeRange, set, size, toArray, toArray, trimToSize`

Methods inherited from class java.util.AbstractList
`equals, hashCode, iterator, listIterator, listIterator, subList`

Methods inherited from class java.util.AbstractCollection
`containsAll, removeAll, retainAll`

Methods inherited from class java.lang.Object
`finalize, getClass, notify, notifyAll, wait, wait, wait`

Methods inherited from interface java.util.List
`containsAll, equals, hashCode, iterator, listIterator, listIterator, removeAll, retainAll, subList`

Constructor Detail

### KnuthSequence

    public KnuthSequence()

  Creates a new and empty list.

### KnuthSequence

    public KnuthSequence(java.util.List list)

  Creates a new list from an existing list.

  Parameters:
    `list` - The list from which to create the new list.

Method Detail

### startSequence

    public void startSequence()

  Marks the start of the sequence.

### endSequence

    public abstract KnuthSequence endSequence()

  Finalizes a Knuth sequence.

  Returns:
    a finalized sequence.

### canAppendSequence

    public abstract boolean canAppendSequence(KnuthSequence sequence)

  Can sequence be appended to this sequence?

  Parameters:
    `sequence` - The sequence that may be appended.
  Returns:
    whether the sequence can be appended to this sequence.

### appendSequence

    public abstract boolean appendSequence(KnuthSequence sequence,
                                           boolean keepTogether,
                                           BreakElement breakElement)

  Append sequence to this sequence if it can be appended.

  Parameters:
    `sequence` - The sequence that is to be appended.
    `keepTogether` - Whether the two sequences must be kept together.
    `breakElement` - The BreakElement that may be inserted between the two sequences.
  Returns:
    whether the sequence was succesfully appended to this sequence.

### appendSequence

    public abstract boolean appendSequence(KnuthSequence sequence)

  Append sequence to this sequence if it can be appended.

  Parameters:
    `sequence` - The sequence that is to be appended.
  Returns:
    whether the sequence was succesfully appended to this sequence.

### appendSequenceOrClose

    public boolean appendSequenceOrClose(KnuthSequence sequence)

  Append sequence to this sequence if it can be appended. If that is not possible, close this sequence.

  Parameters:
    `sequence` - The sequence that is to be appended.
  Returns:
    whether the sequence was succesfully appended to this sequence.

### appendSequenceOrClose

    public boolean appendSequenceOrClose(KnuthSequence sequence,
                                         boolean keepTogether,
                                         BreakElement breakElement)

  Append sequence to this sequence if it can be appended. If that is not possible, close this sequence.

  Parameters:
    `sequence` - The sequence that is to be appended.
    `keepTogether` - Whether the two sequences must be kept together.
    `breakElement` - The BreakElement that may be inserted between the two sequences.
  Returns:
    whether the sequence was succesfully appended to this sequence.

### wrapPositions

    public void wrapPositions(LayoutManager lm)

  Wrap the Positions of the elements of this sequence in a Position for LayoutManager lm.

  Parameters:
    `lm` - The LayoutManager for the Positions that will be created.

### getLast

    public ListElement getLast()

  Returns:
    the last element of this sequence.

### removeLast

    public ListElement removeLast()

  Remove the last element of this sequence.

  Returns:
    the removed element.

### getElement

    public ListElement getElement(int index)

  Parameters:
    `index` - The index of the element to be returned
  Returns:
    the element at index index.

### getFirstBoxIndex

    protected int getFirstBoxIndex(int startIndex)

  Returns the position index of the first box in this sequence, starting at the given index. If `startIndex` is outside the bounds of this sequence, it is returned.

  Parameters:
    `startIndex` - the index from which to start the lookup
  Returns:
    the index of the next box element, `ArrayList.size()` if there is no such element, `startIndex` if `(startIndex < 0 || startIndex >= size())`

### isInlineSequence

    public abstract boolean isInlineSequence()

  Is this an inline or a block sequence?

  Returns:
    true if this is an inline sequence

### toString

    public java.lang.String toString()

  Overrides:
    `toString` in class `java.util.AbstractCollection`

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Copyright 1999-2017 The Apache Software Foundation. All Rights Reserved.