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https://issues.apache.org/jira/browse/PDFBOX-996?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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John Hewson updated PDFBOX-996:
-------------------------------
Component/s: (was: PDModel)
Writing
> need to insert a child as the first child of an outline but you can only
> append to the outline.
> -----------------------------------------------------------------------------------------------
>
> Key: PDFBOX-996
> URL: https://issues.apache.org/jira/browse/PDFBOX-996
> Project: PDFBox
> Issue Type: Improvement
> Components: Writing
> 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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