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## org.apache.fop.layoutmgr
Class ElementListUtils

    java.lang.Object
      org.apache.fop.layoutmgr.ElementListUtils

    public final class ElementListUtils

extends java.lang.Object

Utilities for Knuth element lists.

Method Summary
`static int` | `calcContentLength(java.util.List elems)` Calculates the content length of the given element list.
`static int` | `calcContentLength(java.util.List elems, int start, int end)` Calculates the content length of the given element list.
`static int` | `determinePreviousBreak(java.util.List elems, int startIndex)` Determines the position of the previous break before the start index on an element list.
`static boolean` | `endsWithForcedBreak(java.util.List elems)` Indicates whether the given element list ends with a forced break.
`static boolean` | `endsWithNonInfinitePenalty(java.util.List elems)` Indicates whether the given element list ends with a penalty with a non-infinite penalty value.
`static boolean` | `removeLegalBreaks(java.util.List elements, int constraint)` Removes legal breaks in an element list.
`static boolean` | `removeLegalBreaks(java.util.List elements, MinOptMax constraint)` Removes legal breaks in an element list.
`static boolean` | `removeLegalBreaksFromEnd(java.util.List elements, int constraint)` Removes legal breaks in an element list.
`static boolean` | `startsWithForcedBreak(java.util.List elems)` Indicates whether the given element list starts with a forced break.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Method Detail

### removeLegalBreaks

    public static boolean removeLegalBreaks(java.util.List elements,
                                            MinOptMax constraint)

  Removes legal breaks in an element list. A constraint can be specified to limit the range in which the breaks are removed. Legal breaks occuring before at least constraint.opt space is filled will be removed.

  Parameters:
    `elements` - the element list
    `constraint` - min/opt/max value to restrict the range in which the breaks are removed.
  Returns:
    true if the opt constraint is bigger than the list contents

### removeLegalBreaks

    public static boolean removeLegalBreaks(java.util.List elements,
                                            int constraint)

  Removes legal breaks in an element list. A constraint can be specified to limit the range in which the breaks are removed. Legal breaks occuring before at least constraint space is filled will be removed.

  Parameters:
    `elements` - the element list
    `constraint` - value to restrict the range in which the breaks are removed.
  Returns:
    true if the constraint is bigger than the list contents

### removeLegalBreaksFromEnd

    public static boolean removeLegalBreaksFromEnd(java.util.List elements,
                                                   int constraint)

  Removes legal breaks in an element list. A constraint can be specified to limit the range in which the breaks are removed. Legal breaks within the space specified through the constraint (starting from the end of the element list) will be removed.

  Parameters:
    `elements` - the element list
    `constraint` - value to restrict the range in which the breaks are removed.
  Returns:
    true if the constraint is bigger than the list contents

### calcContentLength

    public static int calcContentLength(java.util.List elems,
                                        int start,
                                        int end)

  Calculates the content length of the given element list. Warning: It doesn't take any stretch and shrink possibilities into account.

  Parameters:
    `elems` - the element list
    `start` - element at which to start
    `end` - element at which to stop
  Returns:
    the content length

### calcContentLength

    public static int calcContentLength(java.util.List elems)

  Calculates the content length of the given element list. Warning: It doesn't take any stretch and shrink possibilities into account.

  Parameters:
    `elems` - the element list
  Returns:
    the content length

### endsWithForcedBreak

    public static boolean endsWithForcedBreak(java.util.List elems)

  Indicates whether the given element list ends with a forced break.

  Parameters:
    `elems` - the element list
  Returns:
    true if the list ends with a forced break

### startsWithForcedBreak

    public static boolean startsWithForcedBreak(java.util.List elems)

  Indicates whether the given element list starts with a forced break.

  Parameters:
    `elems` - the element list
  Returns:
    true if the list starts with a forced break

### endsWithNonInfinitePenalty

    public static boolean endsWithNonInfinitePenalty(java.util.List elems)

  Indicates whether the given element list ends with a penalty with a non-infinite penalty value.

  Parameters:
    `elems` - the element list
  Returns:
    true if the list ends with a non-infinite penalty

### determinePreviousBreak

    public static int determinePreviousBreak(java.util.List elems,
                                             int startIndex)

  Determines the position of the previous break before the start index on an element list.

  Parameters:
    `elems` - the element list
    `startIndex` - the start index
  Returns:
    the position of the previous break, or -1 if there was no previous break

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