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## org.apache.fop.layoutmgr
Class LayoutContext

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

public class LayoutContext
extends java.lang.Object

This class is used to pass information to the getNextKnuthElements() method. It is set up by higher level LM and used by lower level LM.

Field Summary
`static int` | `CHECK_REF_AREA` Signal to a Line LM that a higher level LM may provoke a change in the reference area, thus ref area IPD.
`static int` | `FIRST_AREA`
`static int` | `IPD_UNKNOWN`
`static int` | `LAST_AREA`
`static int` | `LINEBREAK_AT_LF_ONLY` Values for flags.
`static int` | `NEW_AREA` Generated break possibility is first in a new area
`static int` | `RESOLVE_LEADING_SPACE`
`static int` | `SUPPRESS_BREAK_BEFORE` If this flag is set, it indicates that any break-before values other than "auto" should not cause a mandatory break as this break was already handled by a parent layout manager.
`static int` | `TRY_HYPHENATE`

Constructor Summary
`LayoutContext(int flags)` Main constructor.
`LayoutContext(LayoutContext parentLC)` Copy constructor for creating child layout contexts.

Method Summary
`void` | `addPendingAfterMark(UnresolvedListElementWithLength element)` Adds a border or padding element to the pending list which will be used to generate the right element list for break possibilities.
`void` | `addPendingBeforeMark(UnresolvedListElementWithLength element)` Adds a border or padding element to the pending list which will be used to generate the right element list for break possibilities.
`void` | `clearKeepsPending()` Clears both keep-with-previous and keep-with-next strengths.
`void` | `clearKeepWithNextPending()` Clears any pending keep-with-next strength.
`void` | `clearKeepWithPreviousPending()` Clears any pending keep-with-previous strength.
`void` | `clearPendingMarks()` Clears all pending marks on the LayoutContext.
`void` | `copyPendingMarksFrom(LayoutContext source)`
`AlignmentContext` | `getAlignmentContext()`
`int` | `getBPAlignment()`
`int` | `getBreakAfter()` Returns the value of the break after the element whose `LayoutManager.getNextKnuthElements(LayoutContext, int)` method has just been called.
`int` | `getBreakBefore()` Returns the value of the break before the element whose `LayoutManager.getNextKnuthElements(LayoutContext, int)` method has just been called.
`int` | `getCurrentSpan()`
`int` | `getDisableColumnBalancing()` Returns whether the column balancer should be disabled before a spanning block
`HyphContext` | `getHyphContext()`
`double` | `getIPDAdjust()`
`Keep` | `getKeepWithNextPending()` Returns the strength of a keep-with-next currently pending.
`Keep` | `getKeepWithPreviousPending()` Returns the strength of a keep-with-previous currently pending.
`SpaceSpecifier` | `getLeadingSpace()`
`int` | `getLineEndBorderAndPaddingWidth()` Get the width to be reserved for border and padding at the end of the line.
`int` | `getLineStartBorderAndPaddingWidth()` Get the width to be reserved for border and padding at the start of the line.
`int` | `getNextSpan()`
`java.util.List` | `getPendingAfterMarks()`
`java.util.List` | `getPendingBeforeMarks()`
`int` | `getRefIPD()` Returns the inline-progression-dimension of the nearest ancestor reference area.
`double` | `getSpaceAdjust()`
`int` | `getSpaceAfter()` Get the current amount of space after / end
`int` | `getSpaceBefore()` Get the current amount of space before / start
`MinOptMax` | `getStackLimitBP()` Returns the stack limit in block-progression-dimension.
`SpaceSpecifier` | `getTrailingSpace()`
`int` | `getWritingMode()` Get the writing mode of the relevant reference area.
`boolean` | `isFirstArea()`
`boolean` | `isKeepWithNextPending()` Indicates whether a keep-with-next constraint is pending.
`boolean` | `isKeepWithPreviousPending()` Indicates whether a keep-with-previous constraint is pending.
`boolean` | `isLastArea()`
`boolean` | `isStart()`
`void` | `resetAlignmentContext()`
`boolean` | `resolveLeadingSpace()`
`void` | `setAlignmentContext(AlignmentContext alignmentContext)`
`void` | `setBPAlignment(int alignment)` Sets the currently applicable alignment in BP direction.
`void` | `setBreakAfter(int breakAfter)` Sets the value of the break after the current element.
`void` | `setBreakBefore(int breakBefore)` Sets the value of the break before the current element.
`void` | `setDisableColumnBalancing(int disableColumnBalancing)` Sets whether the column balancer should be disabled before a spanning block
`void` | `setFlags(int flags)`
`void` | `setFlags(int flags, boolean bSet)`
`void` | `setHyphContext(HyphContext hyph)`
`void` | `setIPDAdjust(double ipdA)`
`void` | `setLeadingSpace(SpaceSpecifier space)`
`void` | `setLineEndBorderAndPaddingWidth(int lineEndBorderAndPaddingWidth)` Set the width to be reserved for border and padding at the end of the line.
`void` | `setLineStartBorderAndPaddingWidth(int lineStartBorderAndPaddingWidth)` Set the width to be reserved for border and padding at the start of the line.
`void` | `setRefIPD(int ipd)` Sets the inline-progression-dimension of the nearest ancestor reference area.
`void` | `setSpaceAdjust(double adjust)`
`void` | `setSpaceAfter(int spaceAfter)` Set the amount of space after / end
`void` | `setSpaceBefore(int spaceBefore)` Set the amount of space before / start
`void` | `setStackLimitBP(MinOptMax limit)` Sets the stack limit in block-progression-dimension.
`void` | `setTrailingSpace(SpaceSpecifier space)`
`void` | `setWritingMode(int writingMode)` Set the writing mode.
`void` | `signalSpanChange(int span)` Used to signal the PSLM that the element list ends early because of a span change in multi-column layout.
`boolean` | `startsNewArea()`
`boolean` | `suppressBreakBefore()`
`java.lang.String` | `toString()`
`boolean` | `tryHyphenate()`
`void` | `unsetFlags(int flags)`
`void` | `updateKeepWithNextPending(Keep keep)` Updates the currently pending keep-with-next strength.
`void` | `updateKeepWithPreviousPending(Keep keep)` Updates the currently pending keep-with-previous strength.

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

Field Detail

### LINEBREAK_AT_LF_ONLY

    public static final int LINEBREAK_AT_LF_ONLY

  Values for flags.

  See Also:
    Constant Field Values

### NEW_AREA

    public static final int NEW_AREA

  Generated break possibility is first in a new area

  See Also:
    Constant Field Values

### IPD_UNKNOWN

    public static final int IPD_UNKNOWN

See Also:
  Constant Field Values

### CHECK_REF_AREA

    public static final int CHECK_REF_AREA

  Signal to a Line LM that a higher level LM may provoke a change in the reference area, thus ref area IPD. The LineLM should return without looking for a line break.

  See Also:
    Constant Field Values

### SUPPRESS_BREAK_BEFORE

    public static final int SUPPRESS_BREAK_BEFORE

  If this flag is set, it indicates that any break-before values other than "auto" should not cause a mandatory break as this break was already handled by a parent layout manager.

  See Also:
    Constant Field Values

### FIRST_AREA

    public static final int FIRST_AREA

See Also:
  Constant Field Values

### TRY_HYPHENATE

    public static final int TRY_HYPHENATE

See Also:
  Constant Field Values

### LAST_AREA

    public static final int LAST_AREA

See Also:
  Constant Field Values

### RESOLVE_LEADING_SPACE

    public static final int RESOLVE_LEADING_SPACE

See Also:
  Constant Field Values

Constructor Detail

### LayoutContext

    public LayoutContext(LayoutContext parentLC)

  Copy constructor for creating child layout contexts.

Parameters:
  `parentLC` - the parent layout context to copy from

### LayoutContext

    public LayoutContext(int flags)

  Main constructor.

Parameters:
  `flags` - the initial flags

Method Detail

### copyPendingMarksFrom

    public void copyPendingMarksFrom(LayoutContext source)

### setFlags

    public void setFlags(int flags)

### setFlags

    public void setFlags(int flags,
                         boolean bSet)

### unsetFlags

    public void unsetFlags(int flags)

### isStart

    public boolean isStart()

### startsNewArea

    public boolean startsNewArea()

### isFirstArea

    public boolean isFirstArea()

### isLastArea

    public boolean isLastArea()

### suppressBreakBefore

    public boolean suppressBreakBefore()

### getKeepWithNextPending

    public Keep getKeepWithNextPending()

  Returns the strength of a keep-with-next currently pending.

  Returns:
    the keep-with-next strength

### getKeepWithPreviousPending

    public Keep getKeepWithPreviousPending()

  Returns the strength of a keep-with-previous currently pending.

  Returns:
    the keep-with-previous strength

### clearKeepWithNextPending

    public void clearKeepWithNextPending()

  Clears any pending keep-with-next strength.

### clearKeepWithPreviousPending

    public void clearKeepWithPreviousPending()

  Clears any pending keep-with-previous strength.

### clearKeepsPending

    public void clearKeepsPending()

  Clears both keep-with-previous and keep-with-next strengths.

### updateKeepWithNextPending

    public void updateKeepWithNextPending(Keep keep)

  Updates the currently pending keep-with-next strength.

  Parameters:
    `keep` - the new strength to consider

### updateKeepWithPreviousPending

    public void updateKeepWithPreviousPending(Keep keep)

  Updates the currently pending keep-with-previous strength.

  Parameters:
    `keep` - the new strength to consider

### isKeepWithNextPending

    public boolean isKeepWithNextPending()

  Indicates whether a keep-with-next constraint is pending.

  Returns:
    true if a keep-with-next constraint is pending

### isKeepWithPreviousPending

    public boolean isKeepWithPreviousPending()

  Indicates whether a keep-with-previous constraint is pending.

  Returns:
    true if a keep-with-previous constraint is pending

### setLeadingSpace

    public void setLeadingSpace(SpaceSpecifier space)

### getLeadingSpace

    public SpaceSpecifier getLeadingSpace()

### resolveLeadingSpace

    public boolean resolveLeadingSpace()

### setTrailingSpace

    public void setTrailingSpace(SpaceSpecifier space)

### getTrailingSpace

    public SpaceSpecifier getTrailingSpace()

### addPendingAfterMark

    public void addPendingAfterMark(UnresolvedListElementWithLength element)

  Adds a border or padding element to the pending list which will be used to generate the right element list for break possibilities. Conditionality resolution will be done elsewhere.

  Parameters:
    `element` - the border, padding or space element

### getPendingAfterMarks

    public java.util.List getPendingAfterMarks()

  Returns:
    the pending border and padding elements at the after edge
  See Also:
    `addPendingAfterMark(UnresolvedListElementWithLength)`

### clearPendingMarks

    public void clearPendingMarks()

  Clears all pending marks on the LayoutContext.

### addPendingBeforeMark

    public void addPendingBeforeMark(UnresolvedListElementWithLength element)

  Adds a border or padding element to the pending list which will be used to generate the right element list for break possibilities. Conditionality resolution will be done elsewhere.

  Parameters:
    `element` - the border, padding or space element

### getPendingBeforeMarks

    public java.util.List getPendingBeforeMarks()

  Returns:
    the pending border and padding elements at the before edge
  See Also:
    `addPendingBeforeMark(UnresolvedListElementWithLength)`

### setStackLimitBP

    public void setStackLimitBP(MinOptMax limit)

  Sets the stack limit in block-progression-dimension.

  Parameters:
    `limit` - the stack limit

### getStackLimitBP

    public MinOptMax getStackLimitBP()

  Returns the stack limit in block-progression-dimension.

  Returns:
    the stack limit

### setRefIPD

    public void setRefIPD(int ipd)

  Sets the inline-progression-dimension of the nearest ancestor reference area.

### getRefIPD

    public int getRefIPD()

  Returns the inline-progression-dimension of the nearest ancestor reference area.

  Returns:
    the inline-progression-dimension of the nearest ancestor reference area

### setHyphContext

    public void setHyphContext(HyphContext hyph)

### getHyphContext

    public HyphContext getHyphContext()

### tryHyphenate

    public boolean tryHyphenate()

### setBPAlignment

    public void setBPAlignment(int alignment)

  Sets the currently applicable alignment in BP direction.

  Parameters:
    `alignment` - one of EN_START, EN_JUSTIFY etc.

### getBPAlignment

    public int getBPAlignment()

  Returns:
    the currently applicable alignment in BP direction (EN_START, EN_JUSTIFY...)

### setSpaceAdjust

    public void setSpaceAdjust(double adjust)

### getSpaceAdjust

    public double getSpaceAdjust()

### setIPDAdjust

    public void setIPDAdjust(double ipdA)

### getIPDAdjust

    public double getIPDAdjust()

### setAlignmentContext

    public void setAlignmentContext(AlignmentContext alignmentContext)

### getAlignmentContext

    public AlignmentContext getAlignmentContext()

### resetAlignmentContext

    public void resetAlignmentContext()

### getLineStartBorderAndPaddingWidth

    public int getLineStartBorderAndPaddingWidth()

  Get the width to be reserved for border and padding at the start of the line.

  Returns:
    the width to be reserved

### setLineStartBorderAndPaddingWidth

    public void setLineStartBorderAndPaddingWidth(int lineStartBorderAndPaddingWidth)

  Set the width to be reserved for border and padding at the start of the line.

  Parameters:
    `lineStartBorderAndPaddingWidth` - the width to be reserved

### getLineEndBorderAndPaddingWidth

    public int getLineEndBorderAndPaddingWidth()

  Get the width to be reserved for border and padding at the end of the line.

  Returns:
    the width to be reserved

### setLineEndBorderAndPaddingWidth

    public void setLineEndBorderAndPaddingWidth(int lineEndBorderAndPaddingWidth)

  Set the width to be reserved for border and padding at the end of the line.

  Parameters:
    `lineEndBorderAndPaddingWidth` - the width to be reserved

### getNextSpan

    public int getNextSpan()

  Returns:
    one of: `Constants.NOT_SET`, `Constants.EN_NONE` `Constants.EN_ALL`

### getCurrentSpan

    public int getCurrentSpan()

  Returns:
    one of: `Constants.NOT_SET`, `Constants.EN_NONE` `Constants.EN_ALL`

### signalSpanChange

    public void signalSpanChange(int span)

  Used to signal the PSLM that the element list ends early because of a span change in multi-column layout.

  Parameters:
    `span` - the new span value (legal values: NOT_SET, EN_NONE, EN_ALL)

### getWritingMode

    public int getWritingMode()

  Get the writing mode of the relevant reference area.

  Returns:
    the applicable writing mode

### setWritingMode

    public void setWritingMode(int writingMode)

  Set the writing mode.

  Parameters:
    `writingMode` - the writing mode

### getSpaceBefore

    public int getSpaceBefore()

  Get the current amount of space before / start

  Returns:
    the space before / start amount

### setSpaceBefore

    public void setSpaceBefore(int spaceBefore)

  Set the amount of space before / start

  Parameters:
    `spaceBefore` - the amount of space before / start

### getSpaceAfter

    public int getSpaceAfter()

  Get the current amount of space after / end

  Returns:
    the space after / end amount

### setSpaceAfter

    public void setSpaceAfter(int spaceAfter)

  Set the amount of space after / end

  Parameters:
    `spaceAfter` - the amount of space after / end

### getBreakBefore

    public int getBreakBefore()

  Returns the value of the break before the element whose `LayoutManager.getNextKnuthElements(LayoutContext, int)` method has just been called.

  Returns:
    one of `Constants.EN_AUTO`, `Constants.EN_COLUMN`, `Constants.EN_PAGE`, `Constants.EN_EVEN_PAGE`, or `Constants.EN_ODD_PAGE`

### setBreakBefore

    public void setBreakBefore(int breakBefore)

  Sets the value of the break before the current element.

  Parameters:
    `breakBefore` - the value of the break-before
  See Also:
    `getBreakBefore()`

### getBreakAfter

    public int getBreakAfter()

  Returns the value of the break after the element whose `LayoutManager.getNextKnuthElements(LayoutContext, int)` method has just been called.

  Returns:
    one of `Constants.EN_AUTO`, `Constants.EN_COLUMN`, `Constants.EN_PAGE`, `Constants.EN_EVEN_PAGE`, or `Constants.EN_ODD_PAGE`

### setBreakAfter

    public void setBreakAfter(int breakAfter)

  Sets the value of the break after the current element.

  Parameters:
    `breakAfter` - the value of the break-after
  See Also:
    `getBreakAfter()`

### toString

    public java.lang.String toString()

### getDisableColumnBalancing

    public int getDisableColumnBalancing()

  Returns whether the column balancer should be disabled before a spanning block

  Returns:
    one of `Constants.EN_TRUE`, `Constants.EN_FALSE`

### setDisableColumnBalancing

    public void setDisableColumnBalancing(int disableColumnBalancing)

  Sets whether the column balancer should be disabled before a spanning block

  Parameters:
    `disableColumnBalancing` - the value of the fox:disable-column-balancing property
  See Also:
    `getDisableColumnBalancing()`

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