PageObject (JHOVE - JSTOR/Harvard Object Validation Environment 1.16.0 API)

java.lang.Object
- edu.harvard.hul.ois.jhove.module.pdf.DocNode
- - edu.harvard.hul.ois.jhove.module.pdf.PageObject

```
public class PageObject
extends DocNode
```
Class encapsulating a PDF page object node.

Field Summary
- Fields inherited from class edu.harvard.hul.ois.jhove.module.pdf.DocNode
  _dict, _module, _pageObjectFlag, _parent, _walkFinished

Constructor Summary

Constructors
Constructor and Description

PageObject(PdfModule module, PageTreeNode parent, PdfDictionary dict)
Superclass constructor.

Constructors
Constructor and Description
`PageObject(PdfModule module, PageTreeNode parent, PdfDictionary dict)` Superclass constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`PdfArray`	`getAnnotations()` Return the page's Annots array of dictionaries, or null if none
`PdfArray`	`getArtBox()` Returns the ArtBox for the page, or null if none.
`PdfArray`	`getBleedBox()` Returns the BleedBox for the page, or null if none.
`List`	`getContentStreams()` Returns the List of content streams.
`PdfArray`	`getTrimBox()` Returns the TrimBox for the page, or null if none.
`void`	`loadContent(PdfModule module)` Find the content stream(s) for this page.
`DocNode`	`nextDocNode()` Called to walk through all page tree nodes and page objects.
`PageObject`	`nextPageObject()` Returns this object the first time it is called after startWalk is called, then null when called again.
`void`	`startWalk()` Call this function when recursively walking through a document tree.

Methods inherited from class edu.harvard.hul.ois.jhove.module.pdf.DocNode
get, getDict, getFontResources, getMediaBox, getParent, getResources, isPageObject

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - PageObject
```
public PageObject(PdfModule module,
                  PageTreeNode parent,
                  PdfDictionary dict)
```
    Superclass constructor.
    
    Parameters:
    
    module - The module under which we're operating
    
    parent - The parent node in the document tree; may be null only for the root node
    
    dict - The dictionary object on which this node is based
- Method Detail
  - loadContent
```
public void loadContent(PdfModule module)
                 throws PdfException
```
    Find the content stream(s) for this page. This is called when the page tree content stream is built by PageTreeNode. getContentStreams may subsequently be called to get the content.
    
    Throws:
    
    PdfException
  - getContentStreams
```
public List getContentStreams()
```
    Returns the List of content streams. The list elements are of type PdfStream.
  - getAnnotations
```
public PdfArray getAnnotations()
                        throws PdfException
```
    Return the page's Annots array of dictionaries, or null if none
    
    Throws:
    
    PdfException
  - startWalk
```
public void startWalk()
```
    Call this function when recursively walking through a document tree. This allows nextPageObject () to be return this object exactly once.
    
    Specified by:
    
    startWalk in class DocNode
  - nextPageObject
```
public PageObject nextPageObject()
```
    Returns this object the first time it is called after startWalk is called, then null when called again. This allows a recursive walk through a document tree to work properly.
    
    Specified by:
    
    nextPageObject in class DocNode
  - nextDocNode
```
public DocNode nextDocNode()
```
    Called to walk through all page tree nodes and page objects. Functionally identical with nextPageObject.
    
    Specified by:
    
    nextDocNode in class DocNode
  - getArtBox
```
public PdfArray getArtBox()
                   throws PdfException
```
    Returns the ArtBox for the page, or null if none. Throws a PDFException if there is an ArtBox but it is not a rectangle.
    
    Throws:
    
    PdfException
  - getTrimBox
```
public PdfArray getTrimBox()
                    throws PdfException
```
    Returns the TrimBox for the page, or null if none. Throws a PDFException if there is an TrimBox but it is not a rectangle.
    
    Throws:
    
    PdfException
  - getBleedBox
```
public PdfArray getBleedBox()
                     throws PdfException
```
    Returns the BleedBox for the page, or null if none. Throws a PDFException if there is an BleedBox but it is not a rectangle.
    
    Throws:
    
    PdfException

Class PageObject

Field Summary

Fields inherited from class edu.harvard.hul.ois.jhove.module.pdf.DocNode

Constructor Summary

Method Summary

Methods inherited from class edu.harvard.hul.ois.jhove.module.pdf.DocNode

Methods inherited from class java.lang.Object

Constructor Detail

PageObject

Method Detail

loadContent

getContentStreams

getAnnotations

startWalk

nextPageObject

nextDocNode

getArtBox

getTrimBox

getBleedBox