Package com.tom_roush.pdfbox.pdmodel.common

Class PDNameTreeNode<T extends COSObjectable>

java.lang.Object

com.tom_roush.pdfbox.pdmodel.common.PDNameTreeNode<T>

Type Parameters:

T - The type of the values in this name tree.

All Implemented Interfaces:

COSObjectable

Direct Known Subclasses:

PDDestinationNameTreeNode, PDEmbeddedFilesNameTreeNode, PDJavascriptNameTreeNode, PDStructureElementNameTreeNode

public abstract class PDNameTreeNode<T extends COSObjectable>
extends Object
implements COSObjectable

This class represents a node in a name tree.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	PDNameTreeNode()	Constructor.
protected	PDNameTreeNode(COSDictionary dict)	Constructor.

Method Summary

Modifier and Type	Method	Description
protected abstract T	convertCOSToPD(COSBase base)	Method to convert the COS value in the name tree to the PD Model object.
protected abstract PDNameTreeNode<T>	createChildNode(COSDictionary dic)	Create a child node object.
COSDictionary	getCOSObject()	Convert this standard java object to a COS object.
List<PDNameTreeNode<T>>	getKids()	Return the children of this node.
String	getLowerLimit()	Get the lowest value for a key in the name map.
Map<String,T>	getNames()	This will return a map of names on this level.
PDNameTreeNode<T>	getParent()	Returns the parent node.
String	getUpperLimit()	Get the highest value for a key in the name map.
T	getValue(String name)	The name to retrieve.
boolean	isRootNode()	Determines if this is a root node or not.
void	setKids(List<? extends PDNameTreeNode<T>> kids)	Set the children of this named tree.
void	setNames(Map<String,T> names)	Set the names for this node.
void	setParent(PDNameTreeNode<T> parentNode)	Sets the parent to the given node.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PDNameTreeNode

protected PDNameTreeNode()

Constructor.

PDNameTreeNode

protected PDNameTreeNode(COSDictionary dict)

Constructor.

Parameters:

dict - The dictionary that holds the name information.

Method Detail

getCOSObject

public COSDictionary getCOSObject()

Convert this standard java object to a COS object.

Specified by:

getCOSObject in interface COSObjectable

Returns:

The cos object that matches this Java object.

getParent

public PDNameTreeNode<T> getParent()

Returns the parent node.

Returns:

parent node

setParent

public void setParent(PDNameTreeNode<T> parentNode)

Sets the parent to the given node.

Parameters:

parentNode - the node to be set as parent

isRootNode

public boolean isRootNode()

Determines if this is a root node or not.

Returns:

true if this is a root node

getKids

public List<PDNameTreeNode<T>> getKids()

Return the children of this node. This list will contain PDNameTreeNode objects.

Returns:

The list of children or null if there are no children.

setKids

public void setKids(List<? extends PDNameTreeNode<T>> kids)

Set the children of this named tree.

Parameters:

kids - The children of this named tree. These have to be in sorted order. Because of that, it is usually easier to call setNames(Map) with a map and pass a single element list here.

getValue

public T getValue(String name)
           throws IOException

The name to retrieve.

Parameters:

name - The name in the tree.

Returns:

The value of the name in the tree.

Throws:

IOException - If there is a problem creating the destinations.

getNames

public Map<String,T> getNames()
                             throws IOException

This will return a map of names on this level. The key will be a string, and the value will depend on where this class is being used.

Returns:

ordered map of COS objects or null if the dictionary contains no 'Names' entry on this level.

Throws:

IOException - If there is an error while creating the sub types.

See Also:

getKids()

convertCOSToPD

protected abstract T convertCOSToPD(COSBase base)
                             throws IOException

Method to convert the COS value in the name tree to the PD Model object. The default implementation will simply return the given COSBase object. Subclasses should do something specific.

Parameters:

base - The COS object to convert.

Returns:

The converted PD Model object.

Throws:

IOException - If there is an error during creation.

createChildNode

protected abstract PDNameTreeNode<T> createChildNode(COSDictionary dic)

Create a child node object.

Parameters:

dic - The dictionary for the child node object to refer to.

Returns:

The new child node object.

setNames

public void setNames(Map<String,T> names)

Set the names for this node. This method will set the appropriate upper and lower limits based on the keys in the map and take care of the ordering.

Parameters:

names - map of names to objects, or null for nothing.

getUpperLimit

public String getUpperLimit()

Get the highest value for a key in the name map.

Returns:

The highest value for a key in the map.

getLowerLimit

public String getLowerLimit()

Get the lowest value for a key in the name map.

Returns:

The lowest value for a key in the map.