need to insert a child as the first child of an outline but you can only append
to the outline.
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Key: PDFBOX-996
URL: https://issues.apache.org/jira/browse/PDFBOX-996
Project: PDFBox
Issue Type: Improvement
Components: PDModel
Affects Versions: 1.5.0
Reporter: Charles Simon
After some investigation I determined that the new code needed to go into
"PDOutlineNode.java" in package
"org.apache.pdfbox.pdmodel.interactive.documentnavigation.outline".
The following is the code for a new method I wrote and tested. Since I can not
commit the code I will leave that to someone who can. The code has been
tested, but another pair of eyes never hurts.
********* Begin code for new method in PDOutlineNode.java *****************
/**
* Insert this node before the current first child node or as the only
* node if there are no children.
* @param outlineNode
*/
public void insertFirstChild( PDOutlineItem outlineNode )
{
PDOutlineItem wasFirstNode = this.getFirstChild();
int currentOpenCount = getOpenCount();
int numberOfOpenNodesWeAreAdding = 1;
outlineNode.setParent( this );
PDOutlineItem lastAddedNode = outlineNode;
while(lastAddedNode.getNextSibling() != null)
{
lastAddedNode = lastAddedNode.getNextSibling();
lastAddedNode.setParent(this);
}
setFirstChild( outlineNode );
// 1 for the the item we are adding;
if( outlineNode.isNodeOpen() )
{
numberOfOpenNodesWeAreAdding += outlineNode.getOpenCount();
}
// now update the count like appendChild() does
if( isNodeOpen() )
{
setOpenCount( currentOpenCount + numberOfOpenNodesWeAreAdding );
}
else
{
setOpenCount( currentOpenCount - numberOfOpenNodesWeAreAdding );
}
// link the 2 subsets together
// end of added list -> to first of old set
lastAddedNode.setNextSibling(wasFirstNode);
// first of old set -> back to last of added set
wasFirstNode.setPreviousSibling(lastAddedNode);
// tell the parent about the new node(s) we just added
updateParentOpenCount( numberOfOpenNodesWeAreAdding );
// update last if there were no child nodes when we started.
if ( wasFirstNode == null )
setLastChild( lastAddedNode );
// else previous last is still the last one
}
********* end code *****************
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