nextPreOrder method

nextPreOrder(rootNode)

Gets next node according to the pre-order tree traversal algorithm.

nextPreOrder(rootNode: Aspose.Words.Node)

Parameter	Type	Description
rootNode	Node	The top node (limit) of traversal.

Returns

Next node in pre-order order. Null if reached the rootNode.

Examples

Shows how to traverse the document’s node tree using the pre-order traversal algorithm, and delete any encountered shape with an image.

let doc = new aw.Document(base.myDir + "Images.docx");

expect(doc.getChildNodes(aw.NodeType.Shape, true).toArray().map(node => node.asShape()).filter(s => s.hasImage).length).toEqual(9);

let curNode = doc;
while (curNode != null)
{
  let nextNode = curNode.nextPreOrder(doc);

  if (curNode.previousPreOrder(doc) != null && nextNode != null)
    expect(nextNode.previousPreOrder(doc).referenceEquals(curNode)).toBeTruthy();

  if (curNode.nodeType == aw.NodeType.Shape && curNode.asShape().hasImage)
    curNode.remove();
  curNode = nextNode;
}

expect(doc.getChildNodes(aw.NodeType.Shape, true).toArray().map(node => node.asShape()).filter(s => s.hasImage).length).toEqual(0);

See Also

• module Aspose.Words
• class Node