NodeChangingAction

Inheritance: java.lang.Object

public class NodeChangingAction

Specifies the type of node change.

Examples:

Shows how to use a NodeChangingCallback to monitor changes to the document tree in real-time as we edit it.

 public void nodeChangingCallback() throws Exception {
     Document doc = new Document();
     doc.setNodeChangingCallback(new NodeChangingPrinter());

     DocumentBuilder builder = new DocumentBuilder(doc);
     builder.writeln("Hello world!");
     builder.startTable();
     builder.insertCell();
     builder.write("Cell 1");
     builder.insertCell();
     builder.write("Cell 2");
     builder.endTable();

     builder.insertImage(getImageDir() + "Logo.jpg");
     builder.getCurrentParagraph().getParentNode().removeAllChildren();
 }

 /// 
 /// Prints every node insertion/removal as it takes place in the document.
 /// 
 private static class NodeChangingPrinter implements INodeChangingCallback {
     public void nodeInserting(NodeChangingArgs args) {
         Assert.assertEquals(args.getAction(), NodeChangingAction.INSERT);
         Assert.assertEquals(args.getOldParent(), null);
     }

     public void nodeInserted(NodeChangingArgs args) {
         Assert.assertEquals(args.getAction(), NodeChangingAction.INSERT);
         Assert.assertNotNull(args.getNewParent());

         System.out.println("Inserted node:");
         System.out.println(MessageFormat.format("\tType:\t{0}", args.getNode().getNodeType()));

         if (!"".equals(args.getNode().getText().trim())) {
             System.out.println(MessageFormat.format("\tText:\t\"{0}\"", args.getNode().getText().trim()));
         }

         System.out.println(MessageFormat.format("\tHash:\t{0}", args.getNode().hashCode()));
         System.out.println(MessageFormat.format("\tParent:\t{0} ({1})", args.getNewParent().getNodeType(), args.getNewParent().hashCode()));
     }

     public void nodeRemoving(NodeChangingArgs args) {
         Assert.assertEquals(args.getAction(), NodeChangingAction.REMOVE);
     }

     public void nodeRemoved(NodeChangingArgs args) {
         Assert.assertEquals(args.getAction(), NodeChangingAction.REMOVE);
         Assert.assertNull(args.getNewParent());

         System.out.println(MessageFormat.format("Removed node: {0} ({1})", args.getNode().getNodeType(), args.getNode().hashCode()));
     }
 }
 

Fields

Field	Description
INSERT	A node is being inserted in the tree.
REMOVE	A node is being removed from the tree.
length

Methods

Method	Description
fromName(String nodeChangingActionName)
getName(int nodeChangingAction)
getValues()
toString(int nodeChangingAction)

INSERT

public static int INSERT

A node is being inserted in the tree.

REMOVE

public static int REMOVE

A node is being removed from the tree.

length

public static int length

fromName(String nodeChangingActionName)

public static int fromName(String nodeChangingActionName)

Parameters:

Parameter	Type	Description
nodeChangingActionName	java.lang.String

Returns: int

getName(int nodeChangingAction)

public static String getName(int nodeChangingAction)

Parameters:

Parameter	Type	Description
nodeChangingAction	int

Returns: java.lang.String

getValues()

public static int[] getValues()

Returns: int[]

toString(int nodeChangingAction)

public static String toString(int nodeChangingAction)

Parameters:

Parameter	Type	Description
nodeChangingAction	int

Returns: java.lang.String