org.apache.fop.layoutmgr

## Class LayoutContext

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

    public final class LayoutContext
    extends 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

Fields
`static int` `FIRST_AREA`
`static int` `LAST_AREA`
`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.

### Method Summary

All Methods Static Methods Instance Methods Concrete Methods
`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.
`static LayoutContext` `copyOf(LayoutContext copy)`
`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()`
`List` `getPendingAfterMarks()`
`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()`
`WritingMode` `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()`
`static LayoutContext` `newInstance()`
`static LayoutContext` `offspringOf(LayoutContext parent)` Returns a descendant of the given layout context.
`void` `resetAlignmentContext()` Reset alignment context.
`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` `setTreatAsArtifact(boolean treatAsArtifact)`
`void` `setWritingMode(WritingMode 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()`
`String` `toString()`
`boolean` `treatAsArtifact()`
`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

#### NEW_AREA

    public static final int NEW_AREA

Generated break possibility is first in a new area

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

#### 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

### Method Detail

#### newInstance

    public static LayoutContext newInstance()

#### copyOf

    public static LayoutContext copyOf(LayoutContext copy)

#### offspringOf

    public static LayoutContext offspringOf(LayoutContext parent)

Returns a descendant of the given layout context. The new context is the same as what would have been created by `newInstance()`, except for inheritable properties that are passed on by the parent. At the moment, the only inheritable property is the value returned by `treatAsArtifact()`.

#### copyPendingMarksFrom

    public void copyPendingMarksFrom(LayoutContext source)

Parameters:
  `source` - from which pending marks are copied

#### setFlags

    public void setFlags(int flags)

Parameters:
  `flags` - to set

#### setFlags

    public void setFlags(int flags,
                         boolean bSet)

Parameters:
  `flags` - to set or clear
  `bSet` - true to set, false to clear

#### unsetFlags

    public void unsetFlags(int flags)

Parameters:
  `flags` - to clear

#### isStart

    public boolean isStart()

Returns:
  true if new area is set

#### startsNewArea

    public boolean startsNewArea()

Returns:
  true if new area is set and leading space is non-null

#### isFirstArea

    public boolean isFirstArea()

Returns:
  true if first area is set

#### isLastArea

    public boolean isLastArea()

Returns:
  true if last area is set

#### suppressBreakBefore

    public boolean suppressBreakBefore()

Returns:
  true if suppress break before is set

#### 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)

Parameters:
  `space` - leading space

#### getLeadingSpace

    public SpaceSpecifier getLeadingSpace()

Returns:
  leading space

#### resolveLeadingSpace

    public boolean resolveLeadingSpace()

Returns:
  true if resolve leading space is set

#### setTrailingSpace

    public void setTrailingSpace(SpaceSpecifier space)

Parameters:
  `space` - trailing space

#### getTrailingSpace

    public SpaceSpecifier getTrailingSpace()

Returns:
  trailing space

#### 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 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 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.

Parameters:
  `ipd` - of 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)

Parameters:
  `hyph` - a hyphenation context

#### getHyphContext

    public HyphContext getHyphContext()

Returns:
  hyphenation context

#### 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)

Parameters:
  `adjust` - space adjustment

#### getSpaceAdjust

    public double getSpaceAdjust()

Returns:
  space adjustment

#### setIPDAdjust

    public void setIPDAdjust(double ipdA)

Parameters:
  `ipdA` - ipd adjustment

#### getIPDAdjust

    public double getIPDAdjust()

Returns:
  ipd adjustment

#### setAlignmentContext

    public void setAlignmentContext(AlignmentContext alignmentContext)

Parameters:
  `alignmentContext` - alignment context

#### getAlignmentContext

    public AlignmentContext getAlignmentContext()

Returns:
  alignment context

#### resetAlignmentContext

    public void resetAlignmentContext()

Reset alignment context.

#### 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 WritingMode getWritingMode()

Get the writing mode of the relevant reference area.

Returns:
  the applicable writing mode

#### setWritingMode

    public void setWritingMode(WritingMode 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 String toString()

Overrides:
  `toString` in class `Object`

#### 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()`

#### treatAsArtifact

    public boolean treatAsArtifact()

#### setTreatAsArtifact

    public void setTreatAsArtifact(boolean treatAsArtifact)