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java.lang.Objectorg.apache.fop.layoutmgr.PositionIterator
public class PositionIterator
An iterator over Position
instances, that is wrapped around
another 'parent' Iterator
. The parent can be either another
PositionIterator
, or an iterator over KnuthElement
s,
for example.
The next()
method always returns a Position
. The
getPos(Object)
method can be overridden in subclasses
to take care of obtaining the LayoutManager
or Position
from the object returned by the parent iterator's next()
method.
Constructor Summary | |
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PositionIterator(java.util.Iterator parentIter)
Construct position iterator. |
Method Summary | |
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protected boolean |
checkNext()
|
protected void |
endIter()
end (reset) iterator |
protected LayoutManager |
getLM(java.lang.Object nextObj)
|
LayoutManager |
getNextChildLM()
|
protected Position |
getPos(java.lang.Object nextObj)
Default implementation assumes that the passed nextObj is itself a Position , and just returns it. |
boolean |
hasNext()
|
Position |
next()
|
java.lang.Object |
peekNext()
|
void |
remove()
|
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public PositionIterator(java.util.Iterator parentIter)
parentIter
- an iterator to use as parentMethod Detail |
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public LayoutManager getNextChildLM()
protected LayoutManager getLM(java.lang.Object nextObj)
nextObj
- next object from which to obtain position
protected Position getPos(java.lang.Object nextObj)
nextObj
is itself a Position
, and just returns it.
Subclasses for which this is not the case, must provide a
suitable override this method.
nextObj
- next object from which to obtain position
protected boolean checkNext()
protected void endIter()
public boolean hasNext()
hasNext
in interface java.util.Iterator<Position>
public Position next() throws java.util.NoSuchElementException
next
in interface java.util.Iterator<Position>
java.util.NoSuchElementException
public java.lang.Object peekNext()
public void remove() throws java.lang.UnsupportedOperationException
remove
in interface java.util.Iterator<Position>
java.lang.UnsupportedOperationException
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