Second part of the implementation of stage 1 for advanced keeps (see Wiki): Integer values are treated differently from "always" values in keep-with-next/previous.within-column for all block-level FOs.

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@651558 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/fop/fo/flow/table/EffRow.java

@@ -165,55 +165,47 @@ public class EffRow {
     }
 
     /**
-     * Returns true if the enclosing (if any) fo:table-row element of this row, or if any
-     * of the cells starting on this row, have keep-with-previous set.
+     * Returns the strength of the keep constraint if the enclosing (if any) fo:table-row element
+     * of this row, or if any of the cells starting on this row, have keep-with-previous set.
      * 
-     * @return true if this row must be kept with the previous content
+     * @return the strength of the keep-with-previous constraint
      */
-    public boolean mustKeepWithPrevious() {
-        boolean keepWithPrevious = false;
+    public int getKeepWithPreviousStrength() {
+        int strength = BlockLevelLayoutManager.KEEP_AUTO;
         TableRow row = getTableRow();
         if (row != null) {
-            keepWithPrevious = row.mustKeepWithPrevious();
+            strength = Math.max(strength,
+                    KeepUtil.getCombinedBlockLevelKeepStrength(row.getKeepWithPrevious()));
         }
         for (Iterator iter = gridUnits.iterator(); iter.hasNext();) {
             GridUnit gu = (GridUnit) iter.next();
             if (gu.isPrimary()) {
-                keepWithPrevious |= gu.getPrimary().mustKeepWithPrevious();
+                strength = Math.max(strength, gu.getPrimary().getKeepWithPreviousStrength());
             }
         }
-        return keepWithPrevious;
+        return strength;
     }
 
     /**
-     * Returns true if the enclosing (if any) fo:table-row element of this row, or if any
-     * of the cells ending on this row, have keep-with-next set.
+     * Returns the strength of the keep constraint if the enclosing (if any) fo:table-row element
+     * of this row, or if any of the cells ending on this row, have keep-with-next set.
      * 
-     * @return true if this row must be kept with the next content
+     * @return the strength of the keep-with-next constraint
      */
-    public boolean mustKeepWithNext() {
-        boolean keepWithNext = false;
+    public int getKeepWithNextStrength() {
+        int strength = BlockLevelLayoutManager.KEEP_AUTO;
         TableRow row = getTableRow();
         if (row != null) {
-            keepWithNext = row.mustKeepWithNext();
+            strength = Math.max(strength,
+                    KeepUtil.getCombinedBlockLevelKeepStrength(row.getKeepWithNext()));
         }
         for (Iterator iter = gridUnits.iterator(); iter.hasNext();) {
             GridUnit gu = (GridUnit) iter.next();
             if (!gu.isEmpty() && gu.getColSpanIndex() == 0 && gu.isLastGridUnitRowSpan()) {
-                keepWithNext |= gu.getPrimary().mustKeepWithNext();
+                strength = Math.max(strength, gu.getPrimary().getKeepWithNextStrength());
             }
         }
-        return keepWithNext;
-    }
-
-    /**
-     * Returns true if this row is enclosed by an fo:table-row element that has
-     * keep-together set.
-     * 
-     * @return true if this row must be kept together
-     */
-    public boolean mustKeepTogether() {
-        return getKeepTogetherStrength() != BlockLevelLayoutManager.KEEP_AUTO;
+        return strength;
     }
 
     /**

src/java/org/apache/fop/fo/flow/table/PrimaryGridUnit.java

@@ -25,6 +25,7 @@ import java.util.List;
 import org.apache.fop.fo.Constants;
 import org.apache.fop.fo.FONode;
 import org.apache.fop.fo.properties.CommonBorderPaddingBackground;
+import org.apache.fop.layoutmgr.BlockLevelLayoutManager;
 import org.apache.fop.layoutmgr.ElementListUtils;
 import org.apache.fop.layoutmgr.table.TableCellLayoutManager;
 
@@ -53,8 +54,8 @@ public class PrimaryGridUnit extends GridUnit {
     private boolean isSeparateBorderModel;
     private int halfBorderSeparationBPD;
 
-    private boolean keepWithPrevious;
-    private boolean keepWithNext;
+    private int keepWithPrevious = BlockLevelLayoutManager.KEEP_AUTO;
+    private int keepWithNext = BlockLevelLayoutManager.KEEP_AUTO;
     private int breakBefore = Constants.EN_AUTO;
     private int breakAfter = Constants.EN_AUTO;
 
@@ -328,37 +329,39 @@ public class PrimaryGridUnit extends GridUnit {
     }
 
     /**
-     * Returns true if the first child block (or its descendants) of this cell has
-     * keep-with-previous.
+     * Returns the strength of the keep constraint if the first child block (or its descendants)
+     * of this cell has keep-with-previous.
      * 
-     * @return the value of keep-with-previous
+     * @return the keep-with-previous strength
      */
-    public boolean mustKeepWithPrevious() {
+    public int getKeepWithPreviousStrength() {
         return keepWithPrevious;
     }
 
     /**
      * Don't use, reserved for TableCellLM. TODO
+     * @param strength the keep strength
      */
-    public void setKeepWithPrevious() {
-        this.keepWithPrevious = true;
+    public void setKeepWithPreviousStrength(int strength) {
+        this.keepWithPrevious = strength;
     }
 
     /**
-     * Returns true if the last child block (or its descendants) of this cell has
-     * keep-with-next.
+     * Returns the strength of the keep constraint if the last child block (or its descendants) of
+     * this cell has keep-with-next.
      * 
-     * @return the value of keep-with-next
+     * @return the keep-with-next strength
      */
-    public boolean mustKeepWithNext() {
+    public int getKeepWithNextStrength() {
         return keepWithNext;
     }
 
     /**
      * Don't use, reserved for TableCellLM. TODO
+     * @param strength the keep strength
      */
-    public void setKeepWithNext() {
-        this.keepWithNext = true;
+    public void setKeepWithNextStrength(int strength) {
+        this.keepWithNext = strength;
     }
 
     /**

src/java/org/apache/fop/layoutmgr/BlockContainerLayoutManager.java

@@ -263,6 +263,7 @@ public class BlockContainerLayoutManager extends BlockStackingLayoutManager
 
         if (!firstVisibleMarkServed) {
             addKnuthElementsForSpaceBefore(returnList, alignment);
+            context.updateKeepWithPreviousPending(getKeepWithPreviousStrength());
         }
         
         addKnuthElementsForBorderPaddingBefore(returnList, !firstVisibleMarkServed);
@@ -284,6 +285,11 @@ public class BlockContainerLayoutManager extends BlockStackingLayoutManager
 
                 // get elements from curLM
                 returnedList = curLM.getNextKnuthElements(childLC, alignment);
+                if (contentList.size() == 0 && childLC.isKeepWithPreviousPending()) {
+                    //Propagate keep-with-previous up from the first child
+                    context.updateKeepWithPreviousPending(childLC.getKeepWithPreviousPending());
+                    childLC.clearKeepWithPreviousPending();
+                }
                 if (returnedList.size() == 1
                         && ((ListElement)returnedList.getFirst()).isForcedBreak()) {
                     // a descendant of this block has break-before
@@ -329,6 +335,9 @@ public class BlockContainerLayoutManager extends BlockStackingLayoutManager
                         return returnList;
                     }
                 }
+                // propagate and clear
+                context.updateKeepWithNextPending(childLC.getKeepWithNextPending());
+                childLC.clearKeepsPending();
                 prevLM = curLM;
             }
 
@@ -377,6 +386,8 @@ public class BlockContainerLayoutManager extends BlockStackingLayoutManager
         context.clearPendingMarks();
         addKnuthElementsForBreakAfter(returnList, context);
 
+        context.updateKeepWithNextPending(getKeepWithNextStrength());
+
         setFinished(true);
         return returnList;
     }
@@ -990,26 +1001,22 @@ public class BlockContainerLayoutManager extends BlockStackingLayoutManager
 
     /** {@inheritDoc} */
     public int getKeepTogetherStrength() {
-        int strength = KEEP_AUTO;
-        strength = Math.max(strength, KeepUtil.getKeepStrength(
-                getBlockContainerFO().getKeepTogether().getWithinPage()));
-        strength = Math.max(strength, KeepUtil.getKeepStrength(
-                getBlockContainerFO().getKeepTogether().getWithinColumn()));
+        int strength = KeepUtil.getCombinedBlockLevelKeepStrength(
+                getBlockContainerFO().getKeepTogether());
         strength = Math.max(strength, getParentKeepTogetherStrength());
         return strength;
     }
 
     /** {@inheritDoc} */
-    public boolean mustKeepWithPrevious() {
-        //TODO Keeps will have to be more sophisticated sooner or later
-        return !getBlockContainerFO().getKeepWithPrevious().getWithinPage().isAuto()
-                || !getBlockContainerFO().getKeepWithPrevious().getWithinColumn().isAuto();
+    public int getKeepWithNextStrength() {
+        return KeepUtil.getCombinedBlockLevelKeepStrength(
+                getBlockContainerFO().getKeepWithNext());
     }
 
     /** {@inheritDoc} */
-    public boolean mustKeepWithNext() {
-        return !getBlockContainerFO().getKeepWithNext().getWithinPage().isAuto()
-                || !getBlockContainerFO().getKeepWithNext().getWithinColumn().isAuto();
+    public int getKeepWithPreviousStrength() {
+        return KeepUtil.getCombinedBlockLevelKeepStrength(
+                getBlockContainerFO().getKeepWithPrevious());
     }
 
     /**
@@ -1021,16 +1028,12 @@ public class BlockContainerLayoutManager extends BlockStackingLayoutManager
 
     // --------- Property Resolution related functions --------- //
     
-    /**
-     * {@inheritDoc}
-     */
+    /** {@inheritDoc} */
     public boolean getGeneratesReferenceArea() {
         return true;
     }
    
-    /**
-     * {@inheritDoc}
-     */
+    /** {@inheritDoc} */
     public boolean getGeneratesBlockArea() {
         return true;
     }

src/java/org/apache/fop/layoutmgr/BlockLayoutManager.java

@@ -30,6 +30,7 @@ import org.apache.fop.area.Area;
 import org.apache.fop.area.Block;
 import org.apache.fop.area.LineArea;
 import org.apache.fop.datatypes.Length;
+import org.apache.fop.fo.properties.KeepProperty;
 import org.apache.fop.fonts.Font;
 import org.apache.fop.fonts.FontInfo;
 import org.apache.fop.fonts.FontTriplet;
@@ -209,26 +210,20 @@ public class BlockLayoutManager extends BlockStackingLayoutManager
 
     /** {@inheritDoc} */
     public int getKeepTogetherStrength() {
-        int strength = KEEP_AUTO;
-        strength = Math.max(strength, KeepUtil.getKeepStrength(
-                getBlockFO().getKeepTogether().getWithinPage()));
-        strength = Math.max(strength, KeepUtil.getKeepStrength(
-                getBlockFO().getKeepTogether().getWithinColumn()));
+        KeepProperty keep = getBlockFO().getKeepTogether(); 
+        int strength = KeepUtil.getCombinedBlockLevelKeepStrength(keep);
         strength = Math.max(strength, getParentKeepTogetherStrength());
         return strength;
     }
     
     /** {@inheritDoc} */
-    public boolean mustKeepWithPrevious() {
-        //TODO Keeps will have to be more sophisticated sooner or later
-        return !getBlockFO().getKeepWithPrevious().getWithinPage().isAuto()
-                || !getBlockFO().getKeepWithPrevious().getWithinColumn().isAuto();
+    public int getKeepWithNextStrength() {
+        return KeepUtil.getCombinedBlockLevelKeepStrength(getBlockFO().getKeepWithNext());
     }
 
     /** {@inheritDoc} */
-    public boolean mustKeepWithNext() {
-        return !getBlockFO().getKeepWithNext().getWithinPage().isAuto()
-                || !getBlockFO().getKeepWithNext().getWithinColumn().isAuto();
+    public int getKeepWithPreviousStrength() {
+        return KeepUtil.getCombinedBlockLevelKeepStrength(getBlockFO().getKeepWithPrevious());
     }
 
     /** {@inheritDoc} */

src/java/org/apache/fop/layoutmgr/BlockLevelLayoutManager.java

@@ -55,11 +55,23 @@ public interface BlockLevelLayoutManager extends LayoutManager {
      */
     boolean mustKeepTogether();
 
+    /**
+     * Returns the keep-with-previous strength for this element.
+     * @return the keep-with-previous strength
+     */
+    int getKeepWithPreviousStrength();
+    
     /**
      * @return true if this element must be kept with the previous element.
      */
     boolean mustKeepWithPrevious();
 
+    /**
+     * Returns the keep-with-next strength for this element.
+     * @return the keep-with-next strength
+     */
+    int getKeepWithNextStrength();
+    
     /**
      * @return true if this element must be kept with the next element.
      */

src/java/org/apache/fop/layoutmgr/BlockStackingLayoutManager.java

@@ -265,6 +265,7 @@ public abstract class BlockStackingLayoutManager extends AbstractLayoutManager
 
         if (!firstVisibleMarkServed) {
             addKnuthElementsForSpaceBefore(returnList, alignment);
+            context.updateKeepWithPreviousPending(getKeepWithPreviousStrength());
         }
         
         addKnuthElementsForBorderPaddingBefore(returnList, !firstVisibleMarkServed);
@@ -296,8 +297,9 @@ public abstract class BlockStackingLayoutManager extends AbstractLayoutManager
             // get elements from curLM
             returnedList = curLM.getNextKnuthElements(childLC, alignment);
             if (contentList.size() == 0 && childLC.isKeepWithPreviousPending()) {
-                context.setFlags(LayoutContext.KEEP_WITH_PREVIOUS_PENDING);
-                childLC.setFlags(LayoutContext.KEEP_WITH_PREVIOUS_PENDING, false);
+                //Propagate keep-with-previous up from the first child
+                context.updateKeepWithPreviousPending(childLC.getKeepWithPreviousPending());
+                childLC.clearKeepWithPreviousPending();
             }
             if (returnedList != null
                     && returnedList.size() == 1
@@ -364,9 +366,8 @@ public abstract class BlockStackingLayoutManager extends AbstractLayoutManager
                 }
             }
             // propagate and clear
-            context.setFlags(LayoutContext.KEEP_WITH_NEXT_PENDING, childLC.isKeepWithNextPending());
-            childLC.setFlags(LayoutContext.KEEP_WITH_NEXT_PENDING, false);
-            childLC.setFlags(LayoutContext.KEEP_WITH_PREVIOUS_PENDING, false);
+            context.updateKeepWithNextPending(childLC.getKeepWithNextPending());
+            childLC.clearKeepsPending();
             prevLM = curLM;
         }
 
@@ -400,12 +401,7 @@ public abstract class BlockStackingLayoutManager extends AbstractLayoutManager
             wrapPositionElement(forcedBreakAfterLast, returnList, false);
         }
         
-        if (mustKeepWithNext()) {
-            context.setFlags(LayoutContext.KEEP_WITH_NEXT_PENDING);
-        }
-        if (mustKeepWithPrevious()) {
-            context.setFlags(LayoutContext.KEEP_WITH_PREVIOUS_PENDING);
-        }
+        context.updateKeepWithNextPending(getKeepWithNextStrength());
         
         setFinished(true);
 
@@ -425,14 +421,15 @@ public abstract class BlockStackingLayoutManager extends AbstractLayoutManager
                 || childLC.isKeepWithPreviousPending()) {
             
             int strength = getKeepTogetherStrength();
-            if (context.isKeepWithNextPending()) {
-                context.setFlags(LayoutContext.KEEP_WITH_NEXT_PENDING, false);
-                strength = KEEP_ALWAYS;
-            }
-            if (childLC.isKeepWithPreviousPending()) {
-                childLC.setFlags(LayoutContext.KEEP_WITH_PREVIOUS_PENDING, false);
-                strength = KEEP_ALWAYS;
-            }
+            
+            //Handle pending keep-with-next
+            strength = Math.max(strength, context.getKeepWithNextPending());
+            context.clearKeepWithNextPending();
+            
+            //Handle pending keep-with-previous from child LM
+            strength = Math.max(strength, childLC.getKeepWithPreviousPending());
+            childLC.clearKeepWithPreviousPending();
+            
             int penalty = KeepUtil.getPenaltyForKeep(strength);
 
             // add a penalty to forbid or discourage a break between blocks
@@ -823,12 +820,12 @@ public abstract class BlockStackingLayoutManager extends AbstractLayoutManager
 
     /** {@inheritDoc} */
     public boolean mustKeepWithPrevious() {
-        return false;
+        return getKeepWithPreviousStrength() > KEEP_AUTO;
     }
 
     /** {@inheritDoc} */
     public boolean mustKeepWithNext() {
-        return false;
+        return getKeepWithNextStrength() > KEEP_AUTO;
     }
 
     /**

src/java/org/apache/fop/layoutmgr/FlowLayoutManager.java

@@ -107,8 +107,8 @@ public class FlowLayoutManager extends BlockStackingLayoutManager
             returnedList = curLM.getNextKnuthElements(childLC, alignment);
             //log.debug("FLM.getNextKnuthElements> returnedList.size() = " + returnedList.size());
             if (returnList.size() == 0 && childLC.isKeepWithPreviousPending()) {
-                context.setFlags(LayoutContext.KEEP_WITH_PREVIOUS_PENDING);
-                childLC.setFlags(LayoutContext.KEEP_WITH_PREVIOUS_PENDING, false);
+                context.updateKeepWithPreviousPending(childLC.getKeepWithPreviousPending());
+                childLC.clearKeepWithPreviousPending();
             }
 
             // "wrap" the Position inside each element
@@ -124,20 +124,7 @@ public class FlowLayoutManager extends BlockStackingLayoutManager
                 return returnList;
             } else {
                 if (returnList.size() > 0) {
-                    // there is a block before this one
-                    if (context.isKeepWithNextPending()
-                            || childLC.isKeepWithPreviousPending()) {
-                        //Clear pending keep flag
-                        context.setFlags(LayoutContext.KEEP_WITH_NEXT_PENDING, false);
-                        childLC.setFlags(LayoutContext.KEEP_WITH_PREVIOUS_PENDING, false);
-                        // add an infinite penalty to forbid a break between blocks
-                        returnList.add(new BreakElement(
-                                new Position(this), KnuthElement.INFINITE, context));
-                    } else if (!((ListElement) returnList.getLast()).isGlue()) {
-                        // add a null penalty to allow a break between blocks
-                        returnList.add(new BreakElement(
-                                new Position(this), 0, context));
-                    }
+                    addInBetweenBreak(returnList, context, childLC);
                 }
                 if (returnedList.size() > 0) {
                     returnList.addAll(returnedList);
@@ -155,11 +142,12 @@ public class FlowLayoutManager extends BlockStackingLayoutManager
                     }
                 }
             }
-            if (childLC.isKeepWithNextPending()) {
-                //Clear and propagate
-                childLC.setFlags(LayoutContext.KEEP_WITH_NEXT_PENDING, false);
-                context.setFlags(LayoutContext.KEEP_WITH_NEXT_PENDING);
-            }
+
+            //Propagate and clear
+            context.updateKeepWithNextPending(childLC.getKeepWithNextPending());
+            childLC.clearKeepWithNextPending();
+            
+            context.updateKeepWithNextPending(getKeepWithNextStrength());
         }
 
         SpaceResolver.resolveElementList(returnList);
@@ -213,18 +201,16 @@ public class FlowLayoutManager extends BlockStackingLayoutManager
     }
     
     /** {@inheritDoc} */
-    public boolean mustKeepWithPrevious() {
-        return false;
+    public int getKeepWithNextStrength() {
+        return KEEP_AUTO;
     }
 
     /** {@inheritDoc} */
-    public boolean mustKeepWithNext() {
-        return false;
+    public int getKeepWithPreviousStrength() {
+        return KEEP_AUTO;
     }
-
-    /**
-     * {@inheritDoc} 
-     */
+    
+    /** {@inheritDoc} */
     public LinkedList getChangedKnuthElements(List oldList, /*int flaggedPenalty,*/ int alignment) {
         ListIterator oldListIterator = oldList.listIterator();
         KnuthElement returnedElement;
@@ -357,6 +343,6 @@ public class FlowLayoutManager extends BlockStackingLayoutManager
     public int getContentAreaBPD() {
         return (int) getCurrentPV().getBodyRegion().getBPD();
     }
-    
+
 }
 

src/java/org/apache/fop/layoutmgr/FootnoteBodyLayoutManager.java

@@ -96,4 +96,14 @@ public class FootnoteBodyLayoutManager extends BlockStackingLayoutManager {
         return getParentKeepTogetherStrength();
     }
     
+    /** {@inheritDoc} */
+    public int getKeepWithNextStrength() {
+        return KEEP_AUTO;
+    }
+
+    /** {@inheritDoc} */
+    public int getKeepWithPreviousStrength() {
+        return KEEP_AUTO;
+    }
+    
 }

src/java/org/apache/fop/layoutmgr/KeepUtil.java

@@ -20,6 +20,7 @@
 package org.apache.fop.layoutmgr;
 
 import org.apache.fop.fo.Constants;
+import org.apache.fop.fo.properties.KeepProperty;
 import org.apache.fop.fo.properties.Property;
 
 /**
@@ -46,6 +47,29 @@ public class KeepUtil {
         }
     }
     
+    /**
+     * Returns the combined block-level keep strength from a keep property.
+     * <p>
+     * Note: This is a temporary method to be used until it is possible to differentiate between
+     * page and column keeps!
+     * @param keep the keep property
+     * @return the combined keep strength
+     */
+    public static int getCombinedBlockLevelKeepStrength(KeepProperty keep) {
+        return Math.max(
+                getKeepStrength(keep.getWithinPage()),
+                getKeepStrength(keep.getWithinColumn()));
+    }
+    
+    /**
+     * Indicates whether a keep strength indicates a keep constraint.
+     * @param strength the keep strength
+     * @return true if the keep is not "auto"
+     */
+    public static boolean hasKeep(int strength) {
+        return strength > BlockLevelLayoutManager.KEEP_AUTO;
+    }
+    
     /**
      * Returns the penalty value to be used for a certain keep strength.
      * <ul>
@@ -67,4 +91,19 @@ public class KeepUtil {
         return penalty;
     }
     
+    /**
+     * Returns a string representation of a keep strength value.
+     * @param keepStrength the keep strength
+     * @return the string representation
+     */
+    public static String keepStrengthToString(int keepStrength) {
+        if (keepStrength == BlockLevelLayoutManager.KEEP_AUTO) {
+            return "auto";
+        } else if (keepStrength == BlockLevelLayoutManager.KEEP_ALWAYS) {
+            return "always";
+        } else {
+            return Integer.toString(keepStrength);
+        }
+    }
+    
 }

src/java/org/apache/fop/layoutmgr/LayoutContext.java

@@ -63,12 +63,12 @@ public class LayoutContext {
      * This flag indicates that there's a keep-with-next that hasn't
      * been processed, yet.
      */
-    public static final int KEEP_WITH_NEXT_PENDING = 0x200;
+    //public static final int KEEP_WITH_NEXT_PENDING = 0x200;
     /**
      * This flag indicates that there's a keep-with-previous that hasn't
      * been processed, yet.
      */
-    public static final int KEEP_WITH_PREVIOUS_PENDING = 0x400;
+    //public static final int KEEP_WITH_PREVIOUS_PENDING = 0x400;
 
 
     private int flags; // Contains some set of flags defined above
@@ -135,7 +135,6 @@ public class LayoutContext {
     
     /** Amount of space before / start */
     private int spaceBefore = 0;
-    
     /** Amount of space after / end */
     private int spaceAfter = 0;
     
@@ -145,9 +144,11 @@ public class LayoutContext {
     private int lineEndBorderAndPaddingWidth = 0;
 
     private int breakBefore;
-
     private int breakAfter;
 
+    private int pendingKeepWithNext = BlockLevelLayoutManager.KEEP_AUTO; 
+    private int pendingKeepWithPrevious = BlockLevelLayoutManager.KEEP_AUTO; 
+    
     /**
      * Copy constructor for creating child layout contexts.
      * @param parentLC the parent layout context to copy from
@@ -167,6 +168,8 @@ public class LayoutContext {
         this.lineStartBorderAndPaddingWidth = parentLC.lineStartBorderAndPaddingWidth;
         this.lineEndBorderAndPaddingWidth = parentLC.lineEndBorderAndPaddingWidth;
         copyPendingMarksFrom(parentLC);
+        this.pendingKeepWithNext = parentLC.pendingKeepWithNext;
+        this.pendingKeepWithPrevious = parentLC.pendingKeepWithPrevious;
         // Copy other fields as necessary.
     }
 
@@ -228,12 +231,74 @@ public class LayoutContext {
         return ((this.flags & SUPPRESS_LEADING_SPACE) != 0);
     }
 
+    /**
+     * Returns the strength of a keep-with-next currently pending.
+     * @return the keep-with-next strength
+     */
+    public int getKeepWithNextPending() {
+        return this.pendingKeepWithNext;
+    }
+    
+    /**
+     * Returns the strength of a keep-with-previous currently pending.
+     * @return the keep-with-previous strength
+     */
+    public int getKeepWithPreviousPending() {
+        return this.pendingKeepWithPrevious;
+    }
+    
+    /**
+     * Clears any pending keep-with-next strength.
+     */
+    public void clearKeepWithNextPending() {
+        this.pendingKeepWithNext = BlockLevelLayoutManager.KEEP_AUTO;
+    }
+
+    /**
+     * Clears any pending keep-with-previous strength.
+     */
+    public void clearKeepWithPreviousPending() {
+        this.pendingKeepWithPrevious = BlockLevelLayoutManager.KEEP_AUTO;
+    }
+    
+    /**
+     * Clears both keep-with-previous and keep-with-next strengths.
+     */
+    public void clearKeepsPending() {
+        clearKeepWithPreviousPending();
+        clearKeepWithNextPending();
+    }
+
+    /**
+     * Updates the currently pending keep-with-next strength.
+     * @param strength the new strength to consider
+     */
+    public void updateKeepWithNextPending(int strength) {
+        this.pendingKeepWithNext = Math.max(this.pendingKeepWithNext, strength);
+    }
+
+    /**
+     * Updates the currently pending keep-with-previous strength.
+     * @param strength the new strength to consider
+     */
+    public void updateKeepWithPreviousPending(int strength) {
+        this.pendingKeepWithPrevious = Math.max(this.pendingKeepWithPrevious, strength);
+    }
+
+    /**
+     * Indicates whether a keep-with-next constraint is pending.
+     * @return true if a keep-with-next constraint is pending
+     */
     public boolean isKeepWithNextPending() {
-        return ((this.flags & KEEP_WITH_NEXT_PENDING) != 0);
+        return getKeepWithNextPending() != BlockLevelLayoutManager.KEEP_AUTO;
     }
     
+    /**
+     * Indicates whether a keep-with-previous constraint is pending.
+     * @return true if a keep-with-previous constraint is pending
+     */
     public boolean isKeepWithPreviousPending() {
-        return ((this.flags & KEEP_WITH_PREVIOUS_PENDING) != 0);
+        return getKeepWithPreviousPending() != BlockLevelLayoutManager.KEEP_AUTO;
     }
     
     public void setLeadingSpace(SpaceSpecifier space) {
@@ -595,8 +660,9 @@ public class LayoutContext {
         + "\nStarts New Area: \t" + startsNewArea()
         + "\nIs Last Area: \t" + isLastArea()
         + "\nTry Hyphenate: \t" + tryHyphenate()
-        + "\nKeeps: \t[" + (isKeepWithNextPending() ? "keep-with-next" : "") + "][" 
-            + (isKeepWithPreviousPending() ? "keep-with-previous" : "") + "] pending"
+        + "\nKeeps: \t[keep-with-next=" + KeepUtil.keepStrengthToString(getKeepWithNextPending())
+                + "][keep-with-previous="
+                + KeepUtil.keepStrengthToString(getKeepWithPreviousPending()) + "] pending"
         + "\nBreaks: \tforced [" + (breakBefore != Constants.EN_AUTO ? "break-before" : "") + "][" 
         + (breakAfter != Constants.EN_AUTO ? "break-after" : "") + "]";
     }

src/java/org/apache/fop/layoutmgr/StaticContentLayoutManager.java

@@ -410,5 +410,15 @@ public class StaticContentLayoutManager extends BlockStackingLayoutManager {
         return KEEP_AUTO;
     }
     
+    /** {@inheritDoc} */
+    public int getKeepWithNextStrength() {
+        return KEEP_AUTO;
+    }
+
+    /** {@inheritDoc} */
+    public int getKeepWithPreviousStrength() {
+        return KEEP_AUTO;
+    }
+    
 }
 

src/java/org/apache/fop/layoutmgr/inline/InlineLayoutManager.java

@@ -314,7 +314,7 @@ public class InlineLayoutManager extends InlineStackingLayoutManager {
             // get KnuthElements from curLM
             returnedList = curLM.getNextKnuthElements(childLC, alignment);
             if (returnList.size() == 0 && childLC.isKeepWithPreviousPending()) {
-                childLC.setFlags(LayoutContext.KEEP_WITH_PREVIOUS_PENDING, false);
+                childLC.clearKeepWithPreviousPending();
             }
             if (returnedList == null
                     || returnedList.size() == 0) {
@@ -324,7 +324,7 @@ public class InlineLayoutManager extends InlineStackingLayoutManager {
             }
             
             if (curLM instanceof InlineLevelLayoutManager) {
-                context.setFlags(LayoutContext.KEEP_WITH_NEXT_PENDING, false);
+                context.clearKeepWithNextPending();
                 // "wrap" the Position stored in each element of returnedList
                 ListIterator seqIter = returnedList.listIterator();
                 while (seqIter.hasNext()) {
@@ -365,10 +365,8 @@ public class InlineLayoutManager extends InlineStackingLayoutManager {
                     returnList.add(sequence);
                 }
                 // propagate and clear
-                context.setFlags(LayoutContext.KEEP_WITH_NEXT_PENDING,
-                                 childLC.isKeepWithNextPending());
-                childLC.setFlags(LayoutContext.KEEP_WITH_NEXT_PENDING, false);
-                childLC.setFlags(LayoutContext.KEEP_WITH_PREVIOUS_PENDING, false);
+                context.updateKeepWithNextPending(childLC.getKeepWithNextPending());
+                childLC.clearKeepsPending();
             }
             lastSequence = (KnuthSequence) returnList.getLast();
             lastChildLM = curLM;

src/java/org/apache/fop/layoutmgr/inline/LineLayoutManager.java

@@ -1281,23 +1281,27 @@ public class LineLayoutManager extends InlineStackingLayoutManager
         return ((BlockLevelLayoutManager) getParent()).getKeepTogetherStrength();
     }
     
-    /**
-     * {@inheritDoc}
-     */
+    /** {@inheritDoc} */
     public boolean mustKeepWithPrevious() {
-        return false;
+        return getKeepWithPreviousStrength() > KEEP_AUTO;
     }
 
-    /**
-     * {@inheritDoc}
-     */
+    /** {@inheritDoc} */
     public boolean mustKeepWithNext() {
-        return false;
+        return getKeepWithNextStrength() > KEEP_AUTO;
     }
 
-    /**
-     * {@inheritDoc} 
-     */
+    /** {@inheritDoc} */
+    public int getKeepWithNextStrength() {
+        return KEEP_AUTO;
+    }
+
+    /** {@inheritDoc} */
+    public int getKeepWithPreviousStrength() {
+        return KEEP_AUTO;
+    }
+    
+    /** {@inheritDoc} */
     public int negotiateBPDAdjustment(int adj, KnuthElement lastElement) {
         LeafPosition pos = (LeafPosition)lastElement.getPosition();
         int totalAdj = adj;

src/java/org/apache/fop/layoutmgr/list/ListBlockLayoutManager.java

@@ -280,26 +280,20 @@ public class ListBlockLayoutManager extends BlockStackingLayoutManager
 
     /** {@inheritDoc} */
     public int getKeepTogetherStrength() {
-        int strength = KEEP_AUTO;
-        strength = Math.max(strength, KeepUtil.getKeepStrength(
-                getListBlockFO().getKeepTogether().getWithinPage()));
-        strength = Math.max(strength, KeepUtil.getKeepStrength(
-                getListBlockFO().getKeepTogether().getWithinColumn()));
+        int strength = KeepUtil.getCombinedBlockLevelKeepStrength(
+                getListBlockFO().getKeepTogether());
         strength = Math.max(strength, getParentKeepTogetherStrength());
         return strength;
     }
     
     /** {@inheritDoc} */
-    public boolean mustKeepWithPrevious() {
-        //TODO Keeps will have to be more sophisticated sooner or later
-        return !getListBlockFO().getKeepWithPrevious().getWithinPage().isAuto()
-            || !getListBlockFO().getKeepWithPrevious().getWithinColumn().isAuto();
+    public int getKeepWithNextStrength() {
+        return KeepUtil.getCombinedBlockLevelKeepStrength(getListBlockFO().getKeepWithNext());
     }
 
     /** {@inheritDoc} */
-    public boolean mustKeepWithNext() {
-        return !getListBlockFO().getKeepWithNext().getWithinPage().isAuto()
-                || !getListBlockFO().getKeepWithNext().getWithinColumn().isAuto();
+    public int getKeepWithPreviousStrength() {
+        return KeepUtil.getCombinedBlockLevelKeepStrength(getListBlockFO().getKeepWithPrevious());
     }
 
     /** {@inheritDoc} */

src/java/org/apache/fop/layoutmgr/list/ListItemContentLayoutManager.java

@@ -222,14 +222,20 @@ public class ListItemContentLayoutManager extends BlockStackingLayoutManager {
 
     /** {@inheritDoc} */
     public int getKeepTogetherStrength() {
-        int strength = KEEP_AUTO;
-        strength = Math.max(strength, KeepUtil.getKeepStrength(
-                getPartFO().getKeepTogether().getWithinPage()));
-        strength = Math.max(strength, KeepUtil.getKeepStrength(
-                getPartFO().getKeepTogether().getWithinColumn()));
+        int strength = KeepUtil.getCombinedBlockLevelKeepStrength(getPartFO().getKeepTogether());
         strength = Math.max(strength, getParentKeepTogetherStrength());
         return strength;
     }
     
+    /** {@inheritDoc} */
+    public int getKeepWithNextStrength() {
+        return KEEP_AUTO;
+    }
+
+    /** {@inheritDoc} */
+    public int getKeepWithPreviousStrength() {
+        return KEEP_AUTO;
+    }
+    
 }
 

src/java/org/apache/fop/layoutmgr/list/ListItemLayoutManager.java

@@ -32,6 +32,7 @@ import org.apache.fop.area.Block;
 import org.apache.fop.fo.flow.ListItem;
 import org.apache.fop.fo.flow.ListItemBody;
 import org.apache.fop.fo.flow.ListItemLabel;
+import org.apache.fop.layoutmgr.BlockLevelLayoutManager;
 import org.apache.fop.layoutmgr.BlockStackingLayoutManager;
 import org.apache.fop.layoutmgr.BreakElement;
 import org.apache.fop.layoutmgr.ConditionalElementListener;
@@ -80,8 +81,8 @@ public class ListItemLayoutManager extends BlockStackingLayoutManager
     private MinOptMax effSpaceBefore;
     private MinOptMax effSpaceAfter;
     
-    private boolean keepWithNextPendingOnLabel;
-    private boolean keepWithNextPendingOnBody;
+    private int keepWithNextPendingOnLabel;
+    private int keepWithNextPendingOnBody;
 
     private int listItemHeight;
     
@@ -223,10 +224,8 @@ public class ListItemLayoutManager extends BlockStackingLayoutManager
         SpaceResolver.resolveElementList(labelList);
         ElementListObserver.observe(labelList, "list-item-label", label.getPartFO().getId());
         
-        if (childLC.isKeepWithPreviousPending()) {
-            context.setFlags(LayoutContext.KEEP_WITH_PREVIOUS_PENDING);
-        }
-        this.keepWithNextPendingOnLabel = childLC.isKeepWithNextPending();
+        context.updateKeepWithPreviousPending(childLC.getKeepWithPreviousPending());
+        this.keepWithNextPendingOnLabel = childLC.getKeepWithNextPending();
 
         // body
         childLC = new LayoutContext(0);
@@ -239,10 +238,8 @@ public class ListItemLayoutManager extends BlockStackingLayoutManager
         SpaceResolver.resolveElementList(bodyList);
         ElementListObserver.observe(bodyList, "list-item-body", body.getPartFO().getId());
         
-        if (childLC.isKeepWithPreviousPending()) {
-            context.setFlags(LayoutContext.KEEP_WITH_PREVIOUS_PENDING);
-        }
-        this.keepWithNextPendingOnBody = childLC.isKeepWithNextPending();
+        context.updateKeepWithPreviousPending(childLC.getKeepWithPreviousPending());
+        this.keepWithNextPendingOnBody = childLC.getKeepWithNextPending();
 
         // create a combined list
         LinkedList returnedList = getCombinedKnuthElementsForListItem(labelList, bodyList, context);
@@ -254,12 +251,10 @@ public class ListItemLayoutManager extends BlockStackingLayoutManager
         addKnuthElementsForSpaceAfter(returnList, alignment);
         addKnuthElementsForBreakAfter(returnList, context);
 
-        if (keepWithNextPendingOnLabel || keepWithNextPendingOnBody || mustKeepWithNext()) {
-            context.setFlags(LayoutContext.KEEP_WITH_NEXT_PENDING);
-        }
-        if (mustKeepWithPrevious()) {
-            context.setFlags(LayoutContext.KEEP_WITH_PREVIOUS_PENDING);
-        }
+        context.updateKeepWithNextPending(this.keepWithNextPendingOnLabel);
+        context.updateKeepWithNextPending(this.keepWithNextPendingOnBody);
+        context.updateKeepWithNextPending(getKeepWithNextStrength());
+        context.updateKeepWithPreviousPending(getKeepWithPreviousStrength());
 
         setFinished(true);
         resetSpaces();
@@ -281,21 +276,17 @@ public class ListItemLayoutManager extends BlockStackingLayoutManager
         int totalHeight = Math.max(fullHeights[0], fullHeights[1]);
         int step;
         int addedBoxHeight = 0;
-        boolean keepWithNextActive = false;
+        int keepWithNextActive = BlockLevelLayoutManager.KEEP_AUTO;
 
         LinkedList returnList = new LinkedList();
         while ((step = getNextStep(elementLists, start, end, partialHeights))
                > 0) {
             
             if (end[0] + 1 == elementLists[0].size()) {
-                if (keepWithNextPendingOnLabel) {
-                    keepWithNextActive = true;
-                }
+                keepWithNextActive = Math.max(keepWithNextActive, keepWithNextPendingOnLabel);
             }
             if (end[1] + 1 == elementLists[1].size()) {
-                if (keepWithNextPendingOnBody) {
-                    keepWithNextActive = true;
-                }
+                keepWithNextActive = Math.max(keepWithNextActive, keepWithNextPendingOnBody);
             }
             
             // compute penalty height and box height
@@ -327,12 +318,12 @@ public class ListItemLayoutManager extends BlockStackingLayoutManager
                     start[0], end[0], start[1], end[1]);
             returnList.add(new KnuthBox(boxHeight, stepPosition, false));
             if (addedBoxHeight < totalHeight) {
+                int strength = BlockLevelLayoutManager.KEEP_AUTO;
+                strength = Math.max(strength, keepWithNextActive);
+                strength = Math.max(strength, getKeepTogetherStrength());
                 int p = stepPenalty;
-                if (keepWithNextActive) {
-                    p = KnuthPenalty.INFINITE;
-                }
-                if (mustKeepTogether()) {
-                    p = Math.max(p, KeepUtil.getPenaltyForKeep(getKeepTogetherStrength()));
+                if (p > -KnuthElement.INFINITE) {
+                    p = Math.max(p, KeepUtil.getPenaltyForKeep(strength));
                 }
                 returnList.add(new BreakElement(stepPosition, penaltyHeight, p, -1, context));
             }
@@ -637,26 +628,20 @@ public class ListItemLayoutManager extends BlockStackingLayoutManager
 
     /** {@inheritDoc} */
     public int getKeepTogetherStrength() {
-        int strength = KEEP_AUTO;
-        strength = Math.max(strength, KeepUtil.getKeepStrength(
-                getListItemFO().getKeepTogether().getWithinPage()));
-        strength = Math.max(strength, KeepUtil.getKeepStrength(
-                getListItemFO().getKeepTogether().getWithinColumn()));
+        int strength = KeepUtil.getCombinedBlockLevelKeepStrength(
+                getListItemFO().getKeepTogether());
         strength = Math.max(strength, getParentKeepTogetherStrength());
         return strength;
     }
 
     /** {@inheritDoc} */
-    public boolean mustKeepWithPrevious() {
-        //TODO Keeps will have to be more sophisticated sooner or later
-        return !getListItemFO().getKeepWithPrevious().getWithinPage().isAuto()
-            || !getListItemFO().getKeepWithPrevious().getWithinColumn().isAuto();
+    public int getKeepWithNextStrength() {
+        return KeepUtil.getCombinedBlockLevelKeepStrength(getListItemFO().getKeepWithNext());
     }
 
     /** {@inheritDoc} */
-    public boolean mustKeepWithNext() {
-        return !getListItemFO().getKeepWithNext().getWithinPage().isAuto()
-                || !getListItemFO().getKeepWithNext().getWithinColumn().isAuto();
+    public int getKeepWithPreviousStrength() {
+        return KeepUtil.getCombinedBlockLevelKeepStrength(getListItemFO().getKeepWithPrevious());
     }
 
     /** {@inheritDoc} */

src/java/org/apache/fop/layoutmgr/table/ActiveCell.java

@@ -24,11 +24,13 @@ import java.util.ListIterator;
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
+
 import org.apache.fop.fo.Constants;
 import org.apache.fop.fo.flow.table.ConditionalBorder;
 import org.apache.fop.fo.flow.table.EffRow;
 import org.apache.fop.fo.flow.table.PrimaryGridUnit;
 import org.apache.fop.fo.properties.CommonBorderPaddingBackground;
+import org.apache.fop.layoutmgr.BlockLevelLayoutManager;
 import org.apache.fop.layoutmgr.ElementListUtils;
 import org.apache.fop.layoutmgr.KnuthBox;
 import org.apache.fop.layoutmgr.KnuthElement;
@@ -70,7 +72,7 @@ class ActiveCell {
     /** True if the next CellPart that will be created will be the last one for this cell. */
     private boolean lastCellPart;
 
-    private boolean keepWithNextSignal;
+    private int keepWithNextStrength;
 
     private int spanIndex = 0;
 
@@ -202,7 +204,7 @@ class ActiveCell {
         includedLength = -1;  // Avoid troubles with cells having content of zero length
         totalLength = previousRowsLength + ElementListUtils.calcContentLength(elementList);
         endRowIndex = rowIndex + pgu.getCell().getNumberRowsSpanned() - 1;
-        keepWithNextSignal = false;
+        keepWithNextStrength = BlockLevelLayoutManager.KEEP_AUTO;
         remainingLength = totalLength - previousRowsLength;
 
         afterNextStep = new Step(previousRowsLength);
@@ -506,14 +508,14 @@ class ActiveCell {
      */
     CellPart createCellPart() {
         if (nextStep.end + 1 == elementList.size()) {
-            keepWithNextSignal = pgu.mustKeepWithNext();
+            keepWithNextStrength = pgu.getKeepWithNextStrength();
             // TODO if keep-with-next is set on the row, must every cell of the row
             // contribute some content from children blocks?
             // see http://mail-archives.apache.org/mod_mbox/xmlgraphics-fop-dev/200802.mbox/
             // %3c47BDA379.4050606@anyware-tech.com%3e
             // Assuming no, but if yes the following code should enable this behaviour
 //            if (pgu.getRow() != null && pgu.getRow().mustKeepWithNext()) {
-//                keepWithNextSignal = true;
+//                keepWithNextSignal = true; //to be converted to integer strengths
 //            }
         }
         int bpBeforeFirst;
@@ -536,8 +538,8 @@ class ActiveCell {
         }
     }
 
-    boolean keepWithNextSignal() {
-        return keepWithNextSignal;
+    int getKeepWithNextStrength() {
+        return keepWithNextStrength;
     }
 
     

src/java/org/apache/fop/layoutmgr/table/RowGroupLayoutManager.java

@@ -33,7 +33,6 @@ import org.apache.fop.fo.flow.table.TableColumn;
 import org.apache.fop.fo.flow.table.TableRow;
 import org.apache.fop.fo.properties.CommonBorderPaddingBackground;
 import org.apache.fop.fo.properties.LengthRangeProperty;
-import org.apache.fop.layoutmgr.BlockLevelEventProducer;
 import org.apache.fop.layoutmgr.ElementListObserver;
 import org.apache.fop.layoutmgr.LayoutContext;
 import org.apache.fop.layoutmgr.MinOptMaxUtil;
@@ -61,10 +60,8 @@ class RowGroupLayoutManager {
         LinkedList returnList = new LinkedList();
         createElementsForRowGroup(context, alignment, bodyType, returnList);
 
-        context.setFlags(LayoutContext.KEEP_WITH_PREVIOUS_PENDING,
-                rowGroup[0].mustKeepWithPrevious());
-        context.setFlags(LayoutContext.KEEP_WITH_NEXT_PENDING,
-                rowGroup[rowGroup.length - 1].mustKeepWithNext());
+        context.updateKeepWithPreviousPending(rowGroup[0].getKeepWithPreviousStrength());
+        context.updateKeepWithNextPending(rowGroup[rowGroup.length - 1].getKeepWithNextStrength());
 
         int breakBefore = Constants.EN_AUTO;
         TableRow firstRow = rowGroup[0].getTableRow();

src/java/org/apache/fop/layoutmgr/table/TableAndCaptionLayoutManager.java

@@ -48,6 +48,14 @@ public class TableAndCaptionLayoutManager extends BlockStackingLayoutManager {
         super(node);
     }
 
+    /**
+     * Returns the table-and-caption formatting object.
+     * @return the table-and-caption formatting object
+     */
+    public TableAndCaption getTableAndCaptionFO() {
+        return (TableAndCaption)this.fobj;
+    }
+    
     /**
      * Get the next break possibility.
      *
@@ -196,13 +204,29 @@ public class TableAndCaptionLayoutManager extends BlockStackingLayoutManager {
     public int getKeepTogetherStrength() {
         int strength = KEEP_AUTO;
         /* TODO Complete me!
-        strength = Math.max(strength, KeepUtil.getKeepStrength(
-                getTableAndCaption().getKeepTogether().getWithinPage()));
-        strength = Math.max(strength, KeepUtil.getKeepStrength(
-                getTableAndCaption().getKeepTogether().getWithinColumn()));
+        int strength = KeepUtil.getCombinedBlockLevelKeepStrength(
+                getTableAndCaptionFO().getKeepTogether());
         */
         strength = Math.max(strength, getParentKeepTogetherStrength());
         return strength;
     }    
     
+    /** {@inheritDoc} */
+    public int getKeepWithNextStrength() {
+        return KEEP_AUTO;
+        /* TODO Complete me!
+        return KeepUtil.getCombinedBlockLevelKeepStrength(
+                getTableAndCaptionFO().getKeepWithNext());
+        */
+    }
+
+    /** {@inheritDoc} */
+    public int getKeepWithPreviousStrength() {
+        return KEEP_AUTO;
+        /* TODO Complete me!
+        return KeepUtil.getCombinedBlockLevelKeepStrength(
+                getTableAndCaptionFO().getKeepWithPrevious());
+        */
+    }
+
 }

src/java/org/apache/fop/layoutmgr/table/TableCaptionLayoutManager.java

@@ -47,7 +47,7 @@ public class TableCaptionLayoutManager extends BlockStackingLayoutManager {
     }
 
     /** @return the table-caption FO */
-    public TableCaption getTableCaption() {
+    public TableCaption getTableCaptionFO() {
         return (TableCaption)this.fobj;
     }
     
@@ -201,13 +201,31 @@ public class TableCaptionLayoutManager extends BlockStackingLayoutManager {
         int strength = KEEP_AUTO;
         /* TODO Complete me!
         strength = Math.max(strength, KeepUtil.getKeepStrength(
-                getTableCaption().getKeepTogether().getWithinPage()));
+                getTableCaptionFO().getKeepTogether().getWithinPage()));
         strength = Math.max(strength, KeepUtil.getKeepStrength(
-                getTableCaption().getKeepTogether().getWithinColumn()));
+                getTableCaptionFO().getKeepTogether().getWithinColumn()));
         */
         strength = Math.max(strength, getParentKeepTogetherStrength());
         return strength;
     }
     
+    /** {@inheritDoc} */
+    public int getKeepWithNextStrength() {
+        return KEEP_AUTO;
+        /* TODO Complete me!
+        return KeepUtil.getCombinedBlockLevelKeepStrength(
+                getTableCaptionFO().getKeepWithNext());
+        */
+    }
+
+    /** {@inheritDoc} */
+    public int getKeepWithPreviousStrength() {
+        return KEEP_AUTO;
+        /* TODO Complete me!
+        return KeepUtil.getCombinedBlockLevelKeepStrength(
+                getTableCaptionFO().getKeepWithPrevious());
+        */
+    }
+
 }
 

src/java/org/apache/fop/layoutmgr/table/TableCellLayoutManager.java

@@ -153,8 +153,8 @@ public class TableCellLayoutManager extends BlockStackingLayoutManager
                 log.debug("child LM signals pending keep with next");
             }
             if (contentList.size() == 0 && childLC.isKeepWithPreviousPending()) {
-                primaryGridUnit.setKeepWithPrevious();
-                childLC.setFlags(LayoutContext.KEEP_WITH_PREVIOUS_PENDING, false);
+                primaryGridUnit.setKeepWithPreviousStrength(childLC.getKeepWithPreviousPending());
+                childLC.clearKeepWithPreviousPending();
             }
 
             if (prevLM != null) {
@@ -169,14 +169,12 @@ public class TableCellLayoutManager extends BlockStackingLayoutManager
             }
             if (childLC.isKeepWithNextPending()) {
                 //Clear and propagate
-                childLC.setFlags(LayoutContext.KEEP_WITH_NEXT_PENDING, false);
-                context.setFlags(LayoutContext.KEEP_WITH_NEXT_PENDING);
+                context.updateKeepWithNextPending(childLC.getKeepWithNextPending());
+                childLC.clearKeepWithNextPending();
             }
             prevLM = curLM;
         }
-        if (context.isKeepWithNextPending()) {
-            primaryGridUnit.setKeepWithNext();
-        }
+        primaryGridUnit.setKeepWithNextStrength(context.getKeepWithNextPending());
 
         returnedList = new LinkedList();
         if (contentList.size() > 0) {
@@ -569,24 +567,15 @@ public class TableCellLayoutManager extends BlockStackingLayoutManager
     }
     
     /** {@inheritDoc} */
-    public boolean mustKeepWithPrevious() {
-        //TODO Keeps will have to be more sophisticated sooner or later
-        return false; //TODO FIX ME
-        /*
-        return !fobj.getKeepWithPrevious().getWithinPage().isAuto()
-            || !fobj.getKeepWithPrevious().getWithinColumn().isAuto();
-            */
+    public int getKeepWithNextStrength() {
+        return KEEP_AUTO; //TODO FIX ME (table-cell has no keep-with-next!)
     }
 
     /** {@inheritDoc} */
-    public boolean mustKeepWithNext() {
-        return false; //TODO FIX ME
-        /*
-        return !fobj.getKeepWithNext().getWithinPage().isAuto()
-            || !fobj.getKeepWithNext().getWithinColumn().isAuto();
-            */
+    public int getKeepWithPreviousStrength() {
+        return KEEP_AUTO; //TODO FIX ME (table-cell has no keep-with-previous!)
     }
-
+    
     // --------- Property Resolution related functions --------- //
 
     /**

src/java/org/apache/fop/layoutmgr/table/TableContentLayoutManager.java

@@ -35,6 +35,7 @@ import org.apache.fop.fo.flow.table.EffRow;
 import org.apache.fop.fo.flow.table.PrimaryGridUnit;
 import org.apache.fop.fo.flow.table.Table;
 import org.apache.fop.fo.flow.table.TableBody;
+import org.apache.fop.layoutmgr.BlockLevelLayoutManager;
 import org.apache.fop.layoutmgr.BreakElement;
 import org.apache.fop.layoutmgr.ElementListUtils;
 import org.apache.fop.layoutmgr.KeepUtil;
@@ -208,31 +209,37 @@ public class TableContentLayoutManager implements PercentBaseContext {
         LinkedList returnList = new LinkedList();
         EffRow[] rowGroup = iter.getNextRowGroup();
         // TODO homogenize the handling of keeps and breaks
-        context.unsetFlags(LayoutContext.KEEP_WITH_PREVIOUS_PENDING
-                | LayoutContext.KEEP_WITH_NEXT_PENDING);
+        context.clearKeepsPending();
         context.setBreakBefore(Constants.EN_AUTO);
         context.setBreakAfter(Constants.EN_AUTO);
-        boolean keepWithPrevious = false;
+        int keepWithPrevious = BlockLevelLayoutManager.KEEP_AUTO;
         int breakBefore = Constants.EN_AUTO;
         if (rowGroup != null) {
             RowGroupLayoutManager rowGroupLM = new RowGroupLayoutManager(getTableLM(), rowGroup,
                     stepper);
             List nextRowGroupElems = rowGroupLM.getNextKnuthElements(context, alignment, bodyType);
-            keepWithPrevious = context.isKeepWithPreviousPending();
-            boolean keepBetween = context.isKeepWithNextPending();
+            keepWithPrevious = Math.max(keepWithPrevious, context.getKeepWithPreviousPending());
             breakBefore = context.getBreakBefore();
             int breakBetween = context.getBreakAfter();
             returnList.addAll(nextRowGroupElems);
             while ((rowGroup = iter.getNextRowGroup()) != null) {
                 rowGroupLM = new RowGroupLayoutManager(getTableLM(), rowGroup, stepper);
+                
+                //Note previous pending keep-with-next and clear the strength
+                //(as the layout context is reused)
+                int keepWithNextPending = context.getKeepWithNextPending();
+                context.clearKeepWithNextPending();
+                
+                //Get elements for next row group
                 nextRowGroupElems = rowGroupLM.getNextKnuthElements(context, alignment, bodyType);
-                int penaltyValue = 0;
-                keepBetween |= context.isKeepWithPreviousPending();
-                if (keepBetween) {
-                    penaltyValue = KnuthElement.INFINITE;
-                }
-                penaltyValue = Math.max(penaltyValue,
-                        KeepUtil.getPenaltyForKeep(getTableLM().getKeepTogetherStrength()));
+                
+                //Determine keep constraints
+                int penaltyStrength = BlockLevelLayoutManager.KEEP_AUTO;
+                penaltyStrength = Math.max(penaltyStrength, keepWithNextPending);
+                penaltyStrength = Math.max(penaltyStrength, context.getKeepWithPreviousPending());
+                context.clearKeepWithPreviousPending();
+                penaltyStrength = Math.max(penaltyStrength, getTableLM().getKeepTogetherStrength());
+                int penaltyValue = KeepUtil.getPenaltyForKeep(penaltyStrength);
                 
                 breakBetween = BreakUtil.compareBreakClasses(breakBetween,
                         context.getBreakBefore());
@@ -255,10 +262,9 @@ public class TableContentLayoutManager implements PercentBaseContext {
                         penaltyLen, penaltyValue, breakBetween, context));
                 returnList.addAll(nextRowGroupElems);
                 breakBetween = context.getBreakAfter();
-                keepBetween = context.isKeepWithNextPending();
             }
         }
-        context.setFlags(LayoutContext.KEEP_WITH_PREVIOUS_PENDING, keepWithPrevious);
+        context.updateKeepWithPreviousPending(keepWithPrevious);
         context.setBreakBefore(breakBefore);
 
         //fox:widow-content-limit

src/java/org/apache/fop/layoutmgr/table/TableLayoutManager.java

@@ -256,12 +256,11 @@ public class TableLayoutManager extends BlockStackingLayoutManager
         log.debug(contentKnuthElements);
         wrapPositionElements(contentKnuthElements, returnList);
 
-        if (mustKeepWithPrevious() || childLC.isKeepWithPreviousPending()) {
-            context.setFlags(LayoutContext.KEEP_WITH_PREVIOUS_PENDING);
-        }
-        if (mustKeepWithNext() || childLC.isKeepWithNextPending()) {
-            context.setFlags(LayoutContext.KEEP_WITH_NEXT_PENDING);
-        }
+        context.updateKeepWithPreviousPending(getKeepWithPreviousStrength());
+        context.updateKeepWithPreviousPending(childLC.getKeepWithPreviousPending());
+
+        context.updateKeepWithNextPending(getKeepWithNextStrength());
+        context.updateKeepWithNextPending(childLC.getKeepWithNextPending());
 
         if (getTable().isSeparateBorderModel()) {
             addKnuthElementsForBorderPaddingAfter(returnList, true);
@@ -448,29 +447,19 @@ public class TableLayoutManager extends BlockStackingLayoutManager
 
     /** {@inheritDoc} */
     public int getKeepTogetherStrength() {
-        int strength = KEEP_AUTO;
-        strength = Math.max(strength, KeepUtil.getKeepStrength(
-                getTable().getKeepTogether().getWithinPage()));
-        strength = Math.max(strength, KeepUtil.getKeepStrength(
-                getTable().getKeepTogether().getWithinColumn()));
+        int strength = KeepUtil.getCombinedBlockLevelKeepStrength(getTable().getKeepTogether());
         strength = Math.max(strength, getParentKeepTogetherStrength());
         return strength;
     }
     
-    /**
-     * {@inheritDoc}
-     */
-    public boolean mustKeepWithPrevious() {
-        return !getTable().getKeepWithPrevious().getWithinPage().isAuto()
-                || !getTable().getKeepWithPrevious().getWithinColumn().isAuto();
+    /** {@inheritDoc} */
+    public int getKeepWithNextStrength() {
+        return KeepUtil.getCombinedBlockLevelKeepStrength(getTable().getKeepWithNext());
     }
 
-    /**
-     * {@inheritDoc}
-     */
-    public boolean mustKeepWithNext() {
-        return !getTable().getKeepWithNext().getWithinPage().isAuto()
-                || !getTable().getKeepWithNext().getWithinColumn().isAuto();
+    /** {@inheritDoc} */
+    public int getKeepWithPreviousStrength() {
+        return KeepUtil.getCombinedBlockLevelKeepStrength(getTable().getKeepWithPrevious());
     }
 
     // --------- Property Resolution related functions --------- //

src/java/org/apache/fop/layoutmgr/table/TableStepper.java

@@ -30,9 +30,11 @@ import org.apache.fop.fo.Constants;
 import org.apache.fop.fo.flow.table.EffRow;
 import org.apache.fop.fo.flow.table.GridUnit;
 import org.apache.fop.fo.flow.table.PrimaryGridUnit;
+import org.apache.fop.layoutmgr.BlockLevelLayoutManager;
 import org.apache.fop.layoutmgr.BreakElement;
 import org.apache.fop.layoutmgr.KeepUtil;
 import org.apache.fop.layoutmgr.KnuthBox;
+import org.apache.fop.layoutmgr.KnuthElement;
 import org.apache.fop.layoutmgr.KnuthGlue;
 import org.apache.fop.layoutmgr.KnuthPenalty;
 import org.apache.fop.layoutmgr.LayoutContext;
@@ -198,11 +200,20 @@ public class TableStepper {
             }
 
             //Put all involved grid units into a list
+            int stepPenalty = 0;
             List cellParts = new java.util.ArrayList(columnCount);
             for (Iterator iter = activeCells.iterator(); iter.hasNext();) {
                 ActiveCell activeCell = (ActiveCell) iter.next();
                 CellPart part = activeCell.createCellPart();
                 cellParts.add(part);
+                
+                //Record highest penalty value of part
+                if (part.end >= 0) {
+                    KnuthElement endEl = (KnuthElement)part.pgu.getElements().get(part.end);
+                    if (endEl instanceof KnuthPenalty) {
+                        stepPenalty = Math.max(stepPenalty, endEl.getP());
+                    }
+                }
             }
 
             //Create elements for step
@@ -230,39 +241,37 @@ public class TableStepper {
                 }
             }
 
-            int p = 0;
-            boolean keepWithNext = false;
+            int strength = BlockLevelLayoutManager.KEEP_AUTO;
             for (Iterator iter = activeCells.iterator(); iter.hasNext();) {
                 ActiveCell activeCell = (ActiveCell) iter.next();
-                keepWithNext |= activeCell.keepWithNextSignal();
-            }
-            if (keepWithNext) {
-                p = KnuthPenalty.INFINITE;
+                strength = Math.max(strength, activeCell.getKeepWithNextStrength());
             }
             if (!rowFinished) {
-                p = Math.max(p, KeepUtil.getPenaltyForKeep(
-                        rowGroup[activeRowIndex].getKeepTogetherStrength()));
+                strength = Math.max(strength, rowGroup[activeRowIndex].getKeepTogetherStrength());
                 //The above call doesn't take the penalty from the table into account, so...
-                p = Math.max(p, KeepUtil.getPenaltyForKeep(
-                        getTableLM().getKeepTogetherStrength()));
+                strength = Math.max(strength, getTableLM().getKeepTogetherStrength());
             } else if (activeRowIndex < rowGroup.length - 1) {
-                if (rowGroup[activeRowIndex].mustKeepWithNext()
-                        || rowGroup[activeRowIndex + 1].mustKeepWithPrevious()) {
-                    p = KnuthPenalty.INFINITE;
-                }
+                strength = Math.max(strength,
+                        rowGroup[activeRowIndex].getKeepWithNextStrength());
+                strength = Math.max(strength,
+                        rowGroup[activeRowIndex + 1].getKeepWithPreviousStrength());
                 nextBreakClass = BreakUtil.compareBreakClasses(nextBreakClass,
                         rowGroup[activeRowIndex].getBreakAfter());
                 nextBreakClass = BreakUtil.compareBreakClasses(nextBreakClass,
                         rowGroup[activeRowIndex + 1].getBreakBefore());
             }
-            if (nextBreakClass != Constants.EN_AUTO) {
-                log.trace("Forced break encountered");
-                p = -KnuthPenalty.INFINITE; //Overrides any keeps (see 4.8 in XSL 1.0)
-            }
+            int p = KeepUtil.getPenaltyForKeep(strength);
             if (rowHeightSmallerThanFirstStep) {
                 rowHeightSmallerThanFirstStep = false;
                 p = KnuthPenalty.INFINITE;
             }
+            if (p > -KnuthElement.INFINITE) {
+                p = Math.max(p, stepPenalty);
+            }
+            if (nextBreakClass != Constants.EN_AUTO) {
+                log.trace("Forced break encountered");
+                p = -KnuthPenalty.INFINITE; //Overrides any keeps (see 4.8 in XSL 1.0)
+            }
             returnList.add(new BreakElement(penaltyPos, effPenaltyLen, p, nextBreakClass, context));
             if (penaltyOrGlueLen < 0) {
                 returnList.add(new KnuthGlue(-penaltyOrGlueLen, 0, 0, new Position(null), true));

status.xml

@@ -58,6 +58,11 @@
         Added SVG support for AFP (GOCA).
         </action>
       -->
+      <action context="Layout" dev="JM" type="add">
+        Added minimal support for integer keep values on the various keep properties on block-level
+        FOs. For now, all integer values are treated the same (i.e. without strength distinction).
+        Using integers allows to avoid overflows that can happen when "always" is used extensively.
+      </action>
       <action context="Renderers" dev="JM" type="add">
         Added support for rendering pages using JPS (Java Printing System). See new example:
         examples/embedding/java/ExamplesFO2JPSPrint.java

test/layoutengine/disabled-testcases.xml

@@ -164,18 +164,6 @@
     line.</description>
     <reference>http://www.nabble.com/leaders-with-leader-pattern%3D%22use-content%22-t546244.html</reference>
   </testcase>
-  <testcase>
-    <name>keep-with-previous doesn't work in lists</name>
-    <file>list-block_keep-with-previous.xml</file>
-    <description>Keep-with-previous doesn't work inside tables and
-    lists, yet.</description>
-  </testcase>
-  <testcase>
-    <name>keep-with-previous doesn't work in lists</name>
-    <file>list-item_block_keep-with-previous.xml</file>
-    <description>Keep-with-previous doesn't work inside tables and
-    lists, yet.</description>
-  </testcase>
   <testcase>
     <name>Page breaking doesn't deal with IPD changes</name>
     <file>page-breaking_4.xml</file>

test/layoutengine/standard-testcases/block-container_keep-with-next_1.xml

@@ -0,0 +1,101 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements.  See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with
+  the License.  You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+<!-- $Id$ -->
+<testcase>
+  <info>
+    <p>
+      This test checks keep-with-next on fo:block-container.
+    </p>
+    <p>
+      Widows and Orphans are disabled in this test to avoid side-effects.
+    </p>
+  </info>
+  <fo>
+    <fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format" widows="0" orphans="0">
+      <fo:layout-master-set>
+        <fo:simple-page-master master-name="normal" page-width="5in" page-height="12 * 14.4pt">
+          <fo:region-body/>
+        </fo:simple-page-master>
+      </fo:layout-master-set>
+      <fo:page-sequence master-reference="normal">
+        <fo:flow flow-name="xsl-region-body">
+          <fo:block-container keep-with-next.within-column="always">
+            <fo:block>block1</fo:block>
+            <fo:block>block2</fo:block>
+          </fo:block-container>
+          <fo:block-container keep-with-next.within-column="1">
+            <fo:block>block3</fo:block>
+            <fo:block>block4</fo:block>
+          </fo:block-container>
+          <fo:block-container>
+            <fo:block>block5</fo:block>
+          </fo:block-container>
+          <fo:block-container>
+            <fo:block>block6</fo:block>
+            <fo:block keep-with-next.within-column="1">block7</fo:block>
+          </fo:block-container>
+          <fo:block keep-with-next.within-column="always">block8</fo:block>
+          <fo:block-container keep-with-next.within-column="1">
+            <fo:block>block9</fo:block>
+            <fo:block keep-with-next.within-column="always">block10</fo:block>
+          </fo:block-container>
+          <fo:block>block11</fo:block>
+          <fo:block-container keep-with-next.within-column="always">
+            <fo:block>block12</fo:block>
+            <fo:block keep-with-next.within-column="1">block13</fo:block>
+          </fo:block-container>
+          <fo:block>block14</fo:block>
+        </fo:flow>
+      </fo:page-sequence>
+    </fo:root>
+  </fo>
+  <checks>
+    <element-list category="breaker">
+      <box/> <!-- 1 -->
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="INF"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="999"/>
+      <box/> <!-- 5 -->
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="999"/>
+      <box/>
+      <penalty w="0" p="INF"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/> <!-- 10 -->
+      <penalty w="0" p="INF"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="INF"/>
+      <box/>
+      
+      <skip>3</skip>
+    </element-list>
+    
+  </checks>
+</testcase>

test/layoutengine/standard-testcases/block-container_keep-with-previous_1.xml

@@ -0,0 +1,101 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements.  See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with
+  the License.  You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+<!-- $Id$ -->
+<testcase>
+  <info>
+    <p>
+      This test checks keep-with-previous on fo:block-container.
+    </p>
+    <p>
+      Widows and Orphans are disabled in this test to avoid side-effects.
+    </p>
+  </info>
+  <fo>
+    <fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format" widows="0" orphans="0">
+      <fo:layout-master-set>
+        <fo:simple-page-master master-name="normal" page-width="5in" page-height="12 * 14.4pt">
+          <fo:region-body/>
+        </fo:simple-page-master>
+      </fo:layout-master-set>
+      <fo:page-sequence master-reference="normal">
+        <fo:flow flow-name="xsl-region-body">
+          <fo:block>block1</fo:block>
+          <fo:block-container keep-with-previous.within-column="always">
+            <fo:block>block2</fo:block>
+            <fo:block>block3</fo:block>
+          </fo:block-container>
+          <fo:block-container keep-with-previous.within-column="1">
+            <fo:block>block4</fo:block>
+            <fo:block>block5</fo:block>
+          </fo:block-container>
+          <fo:block-container>
+            <fo:block>block6</fo:block>
+          </fo:block-container>
+          <fo:block-container>
+            <fo:block keep-with-previous.within-column="1">block7</fo:block>
+            <fo:block>block8</fo:block>
+          </fo:block-container>
+          <fo:block keep-with-previous.within-column="always">block9</fo:block>
+          <fo:block-container keep-with-previous.within-column="1">
+            <fo:block keep-with-previous.within-column="always">block10</fo:block>
+            <fo:block>block11</fo:block>
+          </fo:block-container>
+          <fo:block>block12</fo:block>
+          <fo:block-container keep-with-previous.within-column="always">
+            <fo:block keep-with-previous.within-column="1">block13</fo:block>
+            <fo:block>block14</fo:block>
+          </fo:block-container>
+        </fo:flow>
+      </fo:page-sequence>
+    </fo:root>
+  </fo>
+  <checks>
+    <element-list category="breaker">
+      <box/> <!-- 1 -->
+      <penalty w="0" p="INF"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="999"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/> <!-- 5 -->
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="999"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="INF"/>
+      <box/>
+      <penalty w="0" p="INF"/>
+      <box/> <!-- 10 -->
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="INF"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/>
+      
+      <skip>3</skip>
+    </element-list>
+    
+  </checks>
+</testcase>

test/layoutengine/standard-testcases/block_keep-with-next_integers_1.xml

@@ -0,0 +1,99 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements.  See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with
+  the License.  You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+<!-- $Id$ -->
+<testcase>
+  <info>
+    <p>
+      This test checks keep-with-next.wuithin-column with integer values.
+    </p>
+    <p>
+      Widows and Orphans are disabled in this test to avoid side-effects.
+    </p>
+  </info>
+  <fo>
+    <fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format" widows="0" orphans="0">
+      <fo:layout-master-set>
+        <fo:simple-page-master master-name="normal" page-width="5in" page-height="4.5 * 14.4pt">
+          <fo:region-body/>
+        </fo:simple-page-master>
+      </fo:layout-master-set>
+      <fo:page-sequence master-reference="normal">
+        <fo:flow flow-name="xsl-region-body">
+          <fo:block>block1</fo:block>
+          <fo:block keep-with-next.within-column="always">block2</fo:block>
+          <fo:block keep-with-next.within-column="1">block3</fo:block>
+          <fo:block>block4</fo:block>
+          <fo:block keep-with-next.within-column="1">
+            <fo:block>block5</fo:block>
+            <fo:block>block6</fo:block>
+          </fo:block>
+          <fo:block>block7</fo:block>
+          <fo:block keep-with-next.within-column="1">
+            <fo:block>block8</fo:block>
+            <fo:block keep-with-next.within-column="always">block9</fo:block>
+          </fo:block>
+          <fo:block>block10</fo:block>
+          <fo:block keep-with-next.within-column="always">
+            <fo:block>block11</fo:block>
+            <fo:block keep-with-next.within-column="1">block12</fo:block>
+          </fo:block>
+          <fo:block>block13</fo:block>
+          <fo:block>
+            <fo:block keep-with-next.within-column="1">block14</fo:block>
+            <fo:block>block15</fo:block>
+          </fo:block>
+        </fo:flow>
+      </fo:page-sequence>
+    </fo:root>
+  </fo>
+  <checks>
+    <element-list category="breaker">
+      <box/> <!-- 1 -->
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="INF"/>
+      <box/>
+      <penalty w="0" p="999"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/> <!-- 5 -->
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="999"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="INF"/>
+      <box/> <!-- 10 -->
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="INF"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="999"/>
+      <box/>
+      
+      <skip>3</skip>
+    </element-list>
+  </checks>
+</testcase>

test/layoutengine/standard-testcases/block_keep-with-previous_integers_1.xml

@@ -0,0 +1,116 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements.  See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with
+  the License.  You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+<!-- $Id$ -->
+<testcase>
+  <info>
+    <p>
+      This test checks keep-with-previous.wuithin-column with integer values.
+    </p>
+    <p>
+      Widows and Orphans are disabled in this test to avoid side-effects.
+    </p>
+  </info>
+  <fo>
+    <fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format" widows="0" orphans="0">
+      <fo:layout-master-set>
+        <fo:simple-page-master master-name="normal" page-width="5in" page-height="4.5 * 14.4pt">
+          <fo:region-body/>
+        </fo:simple-page-master>
+      </fo:layout-master-set>
+      <fo:page-sequence master-reference="normal">
+        <fo:flow flow-name="xsl-region-body">
+          <fo:block>block1</fo:block>
+          <fo:block keep-with-previous.within-column="always">block2</fo:block>
+          <fo:block keep-with-previous.within-column="1">block3</fo:block>
+          <fo:block>block4</fo:block>
+          <fo:block keep-with-previous.within-column="1">
+            <fo:block>block5</fo:block>
+            <fo:block>block6</fo:block>
+          </fo:block>
+          <fo:block>block7</fo:block>
+          <fo:block keep-with-previous.within-column="1">
+            <fo:block keep-with-previous.within-column="always">block8</fo:block>
+            <fo:block>block9</fo:block>
+          </fo:block>
+          <fo:block>block10</fo:block>
+          <fo:block keep-with-previous.within-column="always">
+            <fo:block keep-with-previous.within-column="1">block11</fo:block>
+            <fo:block>block12</fo:block>
+          </fo:block>
+          <fo:block>block13</fo:block>
+          <fo:block>
+            <fo:block>block14</fo:block>
+            <fo:block keep-with-previous.within-column="1">block15</fo:block>
+          </fo:block>
+          <fo:block>block16</fo:block>
+          <fo:block keep-with-previous.within-column="1">
+            <fo:block>block17</fo:block>
+            <fo:block break-before="page">block18</fo:block>
+            <fo:block>block19</fo:block>
+          </fo:block>
+        </fo:flow>
+      </fo:page-sequence>
+    </fo:root>
+  </fo>
+  <checks>
+    <element-list category="breaker" index="0">
+      <box/> <!-- 1 -->
+      <penalty w="0" p="INF"/>
+      <box/>
+      <penalty w="0" p="999"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="999"/>
+      <box/> <!-- 5 -->
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="INF"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/> <!-- 10 -->
+      <penalty w="0" p="INF"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="999"/>
+      <box/> <!-- 15 -->
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="999"/>
+      <box/>
+      
+      <skip>3</skip>
+    </element-list>
+    <element-list category="breaker" index="1">
+      <box/> <!-- 18 -->
+      <penalty w="0" p="0"/>
+      <box/>
+      
+      <skip>3</skip>
+    </element-list>
+  </checks>
+</testcase>

test/layoutengine/standard-testcases/list-block_keep-with-next_integers_1.xml

@@ -0,0 +1,155 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements.  See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with
+  the License.  You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+<!-- $Id$ -->
+<testcase>
+  <info>
+    <p>
+      This test checks keep-with-next with lists.
+    </p>
+  </info>
+  <fo>
+    <fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format" widows="0" orphans="0">
+      <fo:layout-master-set>
+        <fo:simple-page-master master-name="normal" page-width="5in" page-height="10 * 14.4pt">
+          <fo:region-body/>
+        </fo:simple-page-master>
+      </fo:layout-master-set>
+      <fo:page-sequence master-reference="normal">
+        <fo:flow flow-name="xsl-region-body">
+          <fo:block>block1</fo:block>
+          <fo:list-block 
+              provisional-distance-between-starts="25mm"
+              provisional-label-separation="5mm" 
+              keep-with-next.within-column="1">
+            <fo:list-item>
+              <fo:list-item-label end-indent="label-end()">
+                <fo:block>label1</fo:block>
+              </fo:list-item-label>
+              <fo:list-item-body start-indent="body-start()">
+                <fo:block>item1</fo:block>
+              </fo:list-item-body>
+            </fo:list-item>
+            <fo:list-item>
+              <fo:list-item-label end-indent="label-end()">
+                <fo:block>label2</fo:block>
+              </fo:list-item-label>
+              <fo:list-item-body start-indent="body-start()">
+                <fo:block>item2</fo:block>
+              </fo:list-item-body>
+            </fo:list-item>
+          </fo:list-block>
+          <fo:block>block2</fo:block>
+          <fo:list-block 
+              provisional-distance-between-starts="25mm"
+              provisional-label-separation="5mm">
+            <fo:list-item keep-with-next.within-column="1">
+              <fo:list-item-label end-indent="label-end()">
+                <fo:block>label1</fo:block>
+              </fo:list-item-label>
+              <fo:list-item-body start-indent="body-start()">
+                <fo:block>item1</fo:block>
+                <fo:block keep-with-next.within-column="1">item1</fo:block>
+                <fo:block>item1</fo:block>
+                <fo:block>item1</fo:block>
+              </fo:list-item-body>
+            </fo:list-item>
+            <fo:list-item>
+              <fo:list-item-label end-indent="label-end()">
+                <fo:block>label2</fo:block>
+              </fo:list-item-label>
+              <fo:list-item-body start-indent="body-start()">
+                <fo:block>item2</fo:block>
+              </fo:list-item-body>
+            </fo:list-item>
+          </fo:list-block>
+          <fo:block>block3</fo:block>
+          <fo:list-block keep-with-next.within-column="1"
+              provisional-distance-between-starts="25mm"
+              provisional-label-separation="5mm">
+            <fo:list-item keep-with-next.within-column="2">
+              <fo:list-item-label end-indent="label-end()">
+                <fo:block keep-with-next.within-column="always">label1</fo:block>
+              </fo:list-item-label>
+              <fo:list-item-body start-indent="body-start()">
+                <fo:block>item1</fo:block>
+              </fo:list-item-body>
+            </fo:list-item>
+          </fo:list-block>
+          <fo:block>block4</fo:block>
+          <fo:list-block
+              provisional-distance-between-starts="25mm"
+              provisional-label-separation="5mm">
+            <fo:list-item >
+              <fo:list-item-label end-indent="label-end()">
+                <fo:block keep-with-next.within-column="1">label1</fo:block>
+              </fo:list-item-label>
+              <fo:list-item-body start-indent="body-start()">
+                <fo:block>item1</fo:block>
+                <fo:block>item1</fo:block>
+              </fo:list-item-body>
+            </fo:list-item>
+          </fo:list-block>
+          <fo:block>block5</fo:block>
+        </fo:flow>
+      </fo:page-sequence>
+    </fo:root>
+  </fo>
+  <checks>
+    <element-list category="breaker">
+      <box/>
+      <penalty w="0" p="0"/>
+      <!-- list 1 starts -->
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/>
+      <!-- list 1 end -->
+      <penalty w="0" p="999"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <!-- list 2 starts -->
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="999"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="999"/>
+      <box/>
+      <!-- list 2 end -->
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <!-- list 3 starts -->
+      <box/>
+      <!-- list 3 end -->
+      <penalty w="0" p="INF"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <!-- list 4 starts -->
+      <box/>
+      <penalty w="0" p="999"/>
+      <box/>
+      <!-- list 4 end -->
+      <penalty w="0" p="999"/>
+      <box/>
+      
+      <skip>3</skip>
+    </element-list>
+  </checks>
+</testcase>

test/layoutengine/standard-testcases/list-block_keep-with-previous.xml

@@ -63,7 +63,6 @@
               </fo:list-item-label>
               <fo:list-item-body start-indent="body-start()">
                 <fo:block>item1</fo:block>
-                <fo:block>item1</fo:block>
               </fo:list-item-body>
             </fo:list-item>
             <fo:list-item keep-with-previous.within-page="always">
@@ -117,8 +116,6 @@
       <box w="14400"/>
       <penalty w="0" p="INF"/>
       <box w="14400"/>
-      <penalty w="0" p="INF"/>
-      <box w="14400"/>
       <!-- list 2 end -->
       <penalty w="0" p="0"/>
       <box w="14400"/>

test/layoutengine/standard-testcases/list-block_keep-with-previous_integers_1.xml

@@ -0,0 +1,127 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements.  See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with
+  the License.  You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+<!-- $Id$ -->
+<testcase>
+  <info>
+    <p>
+      This test checks keep-with-previous with lists.
+    </p>
+  </info>
+  <fo>
+    <fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format" widows="0" orphans="0">
+      <fo:layout-master-set>
+        <fo:simple-page-master master-name="normal" page-width="5in" page-height="10 * 14.4pt">
+          <fo:region-body/>
+        </fo:simple-page-master>
+      </fo:layout-master-set>
+      <fo:page-sequence master-reference="normal">
+        <fo:flow flow-name="xsl-region-body">
+          <fo:block>block1</fo:block>
+          <fo:list-block 
+              provisional-distance-between-starts="25mm"
+              provisional-label-separation="5mm" 
+              keep-with-previous.within-column="1">
+            <fo:list-item>
+              <fo:list-item-label end-indent="label-end()">
+                <fo:block>label1</fo:block>
+              </fo:list-item-label>
+              <fo:list-item-body start-indent="body-start()">
+                <fo:block>item1</fo:block>
+              </fo:list-item-body>
+            </fo:list-item>
+            <fo:list-item>
+              <fo:list-item-label end-indent="label-end()">
+                <fo:block>label2</fo:block>
+              </fo:list-item-label>
+              <fo:list-item-body start-indent="body-start()">
+                <fo:block>item2</fo:block>
+              </fo:list-item-body>
+            </fo:list-item>
+          </fo:list-block>
+          <fo:block>block2</fo:block>
+          <fo:list-block 
+              provisional-distance-between-starts="25mm"
+              provisional-label-separation="5mm">
+            <fo:list-item keep-with-previous.within-column="1">
+              <fo:list-item-label end-indent="label-end()">
+                <fo:block>label1</fo:block>
+              </fo:list-item-label>
+              <fo:list-item-body start-indent="body-start()">
+                <fo:block>item1</fo:block>
+                <fo:block>item1</fo:block>
+              </fo:list-item-body>
+            </fo:list-item>
+            <fo:list-item keep-with-previous.within-column="1">
+              <fo:list-item-label end-indent="label-end()">
+                <fo:block>label2</fo:block>
+              </fo:list-item-label>
+              <fo:list-item-body start-indent="body-start()">
+                <fo:block>item2</fo:block>
+              </fo:list-item-body>
+            </fo:list-item>
+          </fo:list-block>
+          <fo:block>block3</fo:block>
+          <fo:list-block keep-with-previous.within-column="1"
+            provisional-distance-between-starts="25mm"
+            provisional-label-separation="5mm">
+            <fo:list-item keep-with-previous.within-column="2">
+              <fo:list-item-label end-indent="label-end()">
+                <fo:block keep-with-previous.within-column="always">label1</fo:block>
+              </fo:list-item-label>
+              <fo:list-item-body start-indent="body-start()">
+                <fo:block>item1</fo:block>
+              </fo:list-item-body>
+            </fo:list-item>
+          </fo:list-block>
+          <fo:block>block4</fo:block>
+        </fo:flow>
+      </fo:page-sequence>
+    </fo:root>
+  </fo>
+  <checks>
+    <element-list category="breaker">
+      <box/>
+      <penalty w="0" p="999"/>
+      <!-- list 1 starts -->
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/>
+      <!-- list 1 end -->
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="999"/>
+      <!-- list 2 starts -->
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="999"/>
+      <box/>
+      <!-- list 2 end -->
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="INF"/>
+      <!-- list 3 starts -->
+      <box/>
+      <!-- list 3 end -->
+      <penalty w="0" p="0"/>
+      <box/>
+      
+      <skip>3</skip>
+    </element-list>
+  </checks>
+</testcase>

test/layoutengine/standard-testcases/list-item_block_keep-with-previous.xml

@@ -41,7 +41,6 @@
               </fo:list-item-label>
               <fo:list-item-body start-indent="body-start()">
                 <fo:block>item1</fo:block>
-                <fo:block>item2</fo:block>
               </fo:list-item-body>
             </fo:list-item>
             <fo:list-item>
@@ -88,8 +87,6 @@
       <box w="14400"/>
       <penalty w="0" p="INF"/>
       <box w="14400"/>
-      <penalty w="0" p="INF"/>
-      <box w="14400"/>
       <!-- list 1 end -->
       <penalty w="0" p="0"/>
       <box w="14400"/>

test/layoutengine/standard-testcases/table_keep-with-next_integers_1.xml

@@ -0,0 +1,184 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements.  See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with
+  the License.  You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+<!-- $Id$ -->
+<testcase>
+  <info>
+    <p>
+      This test checks that keep-with-next works on tables.
+    </p>
+  </info>
+  <fo>
+    <fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format" widows="0" orphans="0">
+      <fo:layout-master-set>
+        <fo:simple-page-master master-name="normal" page-width="5in" page-height="10 * 14.4pt">
+          <fo:region-body/>
+        </fo:simple-page-master>
+      </fo:layout-master-set>
+      <fo:page-sequence master-reference="normal">
+        <fo:flow flow-name="xsl-region-body">
+          <fo:block>block1</fo:block>
+          <fo:table width="100%" table-layout="fixed" keep-with-next.within-column="1">
+            <fo:table-column number-columns-repeated="2" column-width="proportional-column-width(1)"/>
+            <fo:table-body>
+              <fo:table-row>
+                <fo:table-cell>
+                  <fo:block>cell1/1</fo:block>
+                </fo:table-cell>
+                <fo:table-cell>
+                  <fo:block>cell1/2</fo:block>
+                </fo:table-cell>
+              </fo:table-row>
+            </fo:table-body>
+          </fo:table>
+          <fo:block>block2</fo:block>
+          <fo:table width="100%" table-layout="fixed">
+            <fo:table-column number-columns-repeated="2" column-width="proportional-column-width(1)"/>
+            <fo:table-body>
+              <fo:table-row keep-with-next.within-column="1">
+                <fo:table-cell>
+                  <fo:block>cell1/1</fo:block>
+                </fo:table-cell>
+                <fo:table-cell>
+                  <fo:block>cell1/2</fo:block>
+                </fo:table-cell>
+              </fo:table-row>
+              <fo:table-row>
+                <fo:table-cell>
+                  <fo:block keep-with-next.within-column="1">cell1/1</fo:block>
+                </fo:table-cell>
+                <fo:table-cell>
+                  <fo:block>cell1/2</fo:block>
+                </fo:table-cell>
+              </fo:table-row>
+              <fo:table-row keep-with-next.within-column="1">
+                <fo:table-cell>
+                  <fo:block>cell1/1</fo:block>
+                </fo:table-cell>
+                <fo:table-cell>
+                  <fo:block>cell1/2</fo:block>
+                </fo:table-cell>
+              </fo:table-row>
+            </fo:table-body>
+          </fo:table>
+          <fo:block>block3</fo:block>
+          <fo:table width="100%" table-layout="fixed">
+            <fo:table-column number-columns-repeated="2" column-width="proportional-column-width(1)"/>
+            <fo:table-body>
+              <fo:table-row>
+                <fo:table-cell>
+                  <fo:block>cell1/1</fo:block>
+                </fo:table-cell>
+                <fo:table-cell>
+                  <fo:block keep-with-next.within-column="1">cell1/2</fo:block>
+                </fo:table-cell>
+              </fo:table-row>
+            </fo:table-body>
+          </fo:table>
+          <fo:block>block4</fo:block>
+          <fo:table width="100%" table-layout="fixed" keep-with-next.within-column="1">
+            <fo:table-column number-columns-repeated="2" column-width="proportional-column-width(1)"/>
+            <fo:table-body>
+              <fo:table-row keep-with-next.within-column="2">
+                <fo:table-cell>
+                  <fo:block>cell1/1</fo:block>
+                </fo:table-cell>
+                <fo:table-cell>
+                  <fo:block keep-with-next.within-column="always">cell1/2</fo:block>
+                </fo:table-cell>
+              </fo:table-row>
+            </fo:table-body>
+          </fo:table>
+          <fo:block>block5</fo:block>
+          <fo:table width="100%" table-layout="fixed">
+            <fo:table-column number-columns-repeated="2" column-width="proportional-column-width(1)"/>
+            <fo:table-body>
+              <fo:table-row>
+                <fo:table-cell>
+                  <fo:block>cell1/1</fo:block>
+                </fo:table-cell>
+                <fo:table-cell>
+                  <!-- Check that keeps are processed correctly inside the cell -->
+                  <fo:block keep-with-next.within-column="1">cell1/2</fo:block>
+                  <fo:block>cell1/2</fo:block>
+                </fo:table-cell>
+              </fo:table-row>
+              <fo:table-row>
+                <fo:table-cell>
+                  <!-- This cell stops earlier than the one next to it -->
+                  <fo:block keep-with-next.within-column="1">cell1/1</fo:block>
+                </fo:table-cell>
+                <fo:table-cell>
+                  <fo:block>cell1/2</fo:block>
+                  <fo:block>cell1/2</fo:block>
+                </fo:table-cell>
+              </fo:table-row>
+            </fo:table-body>
+          </fo:table>
+          <fo:block>block6</fo:block>
+        </fo:flow>
+      </fo:page-sequence>
+    </fo:root>
+  </fo>
+  <checks>
+    <element-list category="breaker">
+      <box/>
+      <penalty w="0" p="0"/>
+      <!-- table 1 starts -->
+      <box/>
+      <!-- table 1 end -->
+      <penalty w="0" p="999"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <!-- table 2 starts -->
+      <box/>
+      <penalty w="0" p="999"/>
+      <box/>
+      <penalty w="0" p="999"/>
+      <box/>
+      <!-- table 2 end -->
+      <penalty w="0" p="999"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <!-- table 3 starts -->
+      <box/>
+      <!-- table 3 end -->
+      <penalty w="0" p="999"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <!-- table 4 starts -->
+      <box/>
+      <!-- table 4 end -->
+      <penalty w="0" p="INF"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <!-- table 5 starts -->
+      <box/>
+      <penalty w="0" p="999"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="999"/>
+      <box/>
+      <!-- table 5 end -->
+      <penalty w="0" p="999"/>
+      <box/>
+      
+      <skip>3</skip>
+    </element-list>
+  </checks>
+</testcase>

test/layoutengine/standard-testcases/table_keep-with-previous_integers_1.xml

@@ -0,0 +1,146 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements.  See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with
+  the License.  You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+<!-- $Id$ -->
+<testcase>
+  <info>
+    <p>
+      This test checks that keep-with-previous works on tables.
+    </p>
+  </info>
+  <fo>
+    <fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format" widows="0" orphans="0">
+      <fo:layout-master-set>
+        <fo:simple-page-master master-name="normal" page-width="5in" page-height="10 * 14.4pt">
+          <fo:region-body/>
+        </fo:simple-page-master>
+      </fo:layout-master-set>
+      <fo:page-sequence master-reference="normal">
+        <fo:flow flow-name="xsl-region-body">
+          <fo:block>block1</fo:block>
+          <fo:table width="100%" table-layout="fixed" keep-with-previous.within-column="1">
+            <fo:table-column number-columns-repeated="2" column-width="proportional-column-width(1)"/>
+            <fo:table-body>
+              <fo:table-row>
+                <fo:table-cell>
+                  <fo:block>cell1/1</fo:block>
+                </fo:table-cell>
+                <fo:table-cell>
+                  <fo:block>cell1/2</fo:block>
+                </fo:table-cell>
+              </fo:table-row>
+            </fo:table-body>
+          </fo:table>
+          <fo:block>block2</fo:block>
+          <fo:table width="100%" table-layout="fixed">
+            <fo:table-column number-columns-repeated="2" column-width="proportional-column-width(1)"/>
+            <fo:table-body>
+              <fo:table-row>
+                <fo:table-cell>
+                  <fo:block>cell1/1</fo:block>
+                </fo:table-cell>
+                <fo:table-cell>
+                  <fo:block>cell1/2</fo:block>
+                </fo:table-cell>
+              </fo:table-row>
+              <fo:table-row keep-with-previous.within-column="1">
+                <fo:table-cell>
+                  <fo:block>cell1/1</fo:block>
+                </fo:table-cell>
+                <fo:table-cell>
+                  <fo:block>cell1/2</fo:block>
+                </fo:table-cell>
+              </fo:table-row>
+              <fo:table-row>
+                <fo:table-cell>
+                  <fo:block keep-with-previous.within-column="1">cell1/1</fo:block>
+                </fo:table-cell>
+                <fo:table-cell>
+                  <fo:block>cell1/2</fo:block>
+                </fo:table-cell>
+              </fo:table-row>
+            </fo:table-body>
+          </fo:table>
+          <fo:block>block3</fo:block>
+          <fo:table width="100%" table-layout="fixed">
+            <fo:table-column number-columns-repeated="2" column-width="proportional-column-width(1)"/>
+            <fo:table-body>
+              <fo:table-row>
+                <fo:table-cell>
+                  <fo:block>cell1/1</fo:block>
+                </fo:table-cell>
+                <fo:table-cell>
+                  <fo:block>cell1/2</fo:block>
+                </fo:table-cell>
+              </fo:table-row>
+            </fo:table-body>
+          </fo:table>
+          <fo:block keep-with-previous.within-column="1">block4</fo:block>
+          <fo:table width="100%" table-layout="fixed" keep-with-previous.within-column="1">
+            <fo:table-column number-columns-repeated="2" column-width="proportional-column-width(1)"/>
+            <fo:table-body>
+              <fo:table-row keep-with-previous.within-column="2">
+                <fo:table-cell>
+                  <fo:block keep-with-previous.within-column="3">cell1/1</fo:block>
+                </fo:table-cell>
+                <fo:table-cell>
+                  <fo:block keep-with-previous.within-column="always">cell1/2</fo:block>
+                </fo:table-cell>
+              </fo:table-row>
+            </fo:table-body>
+          </fo:table>
+          <fo:block>block5</fo:block>
+        </fo:flow>
+      </fo:page-sequence>
+    </fo:root>
+  </fo>
+  <checks>
+    <element-list category="breaker">
+      <box/>
+      <penalty w="0" p="999"/>
+      <!-- table 1 starts -->
+      <box/>
+      <!-- table 1 end -->
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <!-- table 2 starts -->
+      <box/>
+      <penalty w="0" p="999"/>
+      <box/>
+      <penalty w="0" p="999"/>
+      <box/>
+      <!-- table 2 end -->
+      <penalty w="0" p="0"/>
+      <box/>
+      <penalty w="0" p="0"/>
+      <!-- table 3 starts -->
+      <box/>
+      <!-- table 3 end -->
+      <penalty w="0" p="999"/>
+      <box/>
+      <penalty w="0" p="INF"/>
+      <!-- table 4 starts -->
+      <box/>
+      <!-- table 4 end -->
+      <penalty w="0" p="0"/>
+      <box/>
+      
+      <skip>3</skip>
+    </element-list>
+  </checks>
+</testcase>