import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.fop.fo.flow.Footnote;
-import org.apache.fop.layoutmgr.AbstractLayoutManager;
import org.apache.fop.layoutmgr.FootnoteBodyLayoutManager;
import org.apache.fop.layoutmgr.InlineKnuthSequence;
import org.apache.fop.layoutmgr.KnuthElement;
import org.apache.fop.layoutmgr.KnuthSequence;
import org.apache.fop.layoutmgr.LayoutContext;
-import org.apache.fop.layoutmgr.Position;
+import org.apache.fop.layoutmgr.LayoutManager;
+import org.apache.fop.layoutmgr.ListElement;
+import org.apache.fop.layoutmgr.NonLeafPosition;
+import org.apache.fop.layoutmgr.PositionIterator;
/**
* Layout manager for fo:footnote.
*/
-public class FootnoteLayoutManager extends AbstractLayoutManager
- implements InlineLevelLayoutManager {
+public class FootnoteLayoutManager extends InlineStackingLayoutManager {
/**
* logging instance
/** @see org.apache.fop.layoutmgr.LayoutManager */
public LinkedList getNextKnuthElements(LayoutContext context,
int alignment) {
- // this is the only method that must be implemented:
- // all other methods will never be called, as the returned elements
- // contain Positions created by the citationLM, so its methods will
- // be called instead
-
- // set the citationLM parent to be this LM's parent
- citationLM.setParent(getParent());
+ // for the moment, this LM is set as the citationLM's parent
+ // later on, when this LM will have nothing more to do, the citationLM's parent
+ // will be set to the fotnoteLM's parent
+ citationLM.setParent(this);
citationLM.initialize();
bodyLM.setParent(this);
bodyLM.initialize();
addAnchor(returnedList);
+ // "wrap" the Position stored in each list inside returnedList
+ ListIterator listIterator = returnedList.listIterator();
+ ListIterator elementIterator = null;
+ KnuthSequence list = null;
+ ListElement element = null;
+ while (listIterator.hasNext()) {
+ list = (KnuthSequence) listIterator.next();
+ elementIterator = list.listIterator();
+ while (elementIterator.hasNext()) {
+ element = (KnuthElement) elementIterator.next();
+ element.setPosition(notifyPos(new NonLeafPosition(this, element.getPosition())));
+ }
+ }
+
+ return returnedList;
+ }
+
+ /**
+ * @see org.apache.fop.layoutmgr.LayoutManager#getChangedKnuthElements(java.util.List, int)
+ */
+ public LinkedList getChangedKnuthElements(List oldList,
+ int alignment) {
+ LinkedList returnedList = super.getChangedKnuthElements(oldList, alignment);
+ addAnchor(returnedList);
return returnedList;
}
+
+ /**
+ * @see org.apache.fop.layoutmgr.LayoutManager#addAreas(PositionIterator posIter, LayoutContext context);
+ */
+ public void addAreas(PositionIterator posIter, LayoutContext context) {
+ // "Unwrap" the NonLeafPositions stored in posIter and put
+ // them in a new list, that will be given to the citationLM
+ LinkedList positionList = new LinkedList();
+ NonLeafPosition pos = null;
+ while (posIter.hasNext()) {
+ pos = (NonLeafPosition) posIter.next();
+ if (pos != null && pos.getPosition() != null) {
+ positionList.add(pos.getPosition());
+ }
+ }
+
+ // FootnoteLM does not create any area,
+ // so the citationLM child will add directly to the FootnoteLM parent area
+ citationLM.setParent(getParent());
+
+ // make the citationLM add its areas
+ LayoutContext childContext = new LayoutContext(context);
+ StackingIter childPosIter = new StackingIter(positionList.listIterator());
+ LayoutManager childLM;
+ while ((childLM = childPosIter.getNextChildLM()) != null) {
+ childLM.addAreas(childPosIter, childContext);
+ childContext.setLeadingSpace(childContext.getTrailingSpace());
+ childContext.setFlags(LayoutContext.RESOLVE_LEADING_SPACE, true);
+ }
+ }
+
+ /**
+ * Find the last box in the sequence, and add a reference to the FootnoteBodyLM
+ * @param citationList the list of elements representing the footnote citation
+ */
private void addAnchor(LinkedList citationList) {
- // find the last box in the sequence, and add a reference
- // to the FootnoteBodyLM
KnuthInlineBox lastBox = null;
+ // the list of elements is searched backwards, until we find a box
ListIterator citationIterator = citationList.listIterator(citationList.size());
while (citationIterator.hasPrevious() && lastBox == null) {
Object obj = citationIterator.previous();
if (obj instanceof KnuthElement) {
+ // obj is an element
KnuthElement element = (KnuthElement)obj;
if (element instanceof KnuthInlineBox) {
lastBox = (KnuthInlineBox) element;
}
} else {
+ // obj is a sequence of elements
KnuthSequence seq = (KnuthSequence)obj;
ListIterator nestedIterator = seq.listIterator(seq.size());
while (nestedIterator.hasPrevious() && lastBox == null) {
//throw new IllegalStateException("No anchor box was found for a footnote.");
}
}
-
- /** @see org.apache.fop.layoutmgr.inline.InlineLevelLayoutManager */
- public List addALetterSpaceTo(List oldList) {
- log.warn("null implementation of addALetterSpaceTo() called!");
- return oldList;
- }
-
- /**
- * Remove the word space represented by the given elements
- *
- * @param oldList the elements representing the word space
- */
- public void removeWordSpace(List oldList) {
- // do nothing
- log.warn(this.getClass().getName() + " should not receive a call to removeWordSpace(list)");
- }
-
- /** @see org.apache.fop.layoutmgr.inline.InlineLevelLayoutManager */
- public void getWordChars(StringBuffer sbChars, Position pos) {
- log.warn("null implementation of getWordChars() called!");
- }
-
- /** @see org.apache.fop.layoutmgr.inline.InlineLevelLayoutManager */
- public void hyphenate(Position pos, HyphContext hc) {
- log.warn("null implementation of hyphenate called!");
- }
-
- /** @see org.apache.fop.layoutmgr.inline.InlineLevelLayoutManager */
- public boolean applyChanges(List oldList) {
- log.warn("null implementation of applyChanges() called!");
- return false;
- }
-
- /**
- * @see org.apache.fop.layoutmgr.LayoutManager#getChangedKnuthElements(java.util.List, int)
- */
- public LinkedList getChangedKnuthElements(List oldList,
- int alignment) {
- log.warn("null implementation of getChangeKnuthElement() called!");
- return null;
- }
}
projects / xmlgraphics-fop.git / commitdiff