com.lowagie.rups.controller
Class PdfReaderController

java.lang.Object
  java.util.Observable
      com.lowagie.rups.controller.PdfReaderController

All Implemented Interfaces:

java.util.Observer

public class PdfReaderController
extends java.util.Observable
implements java.util.Observer

Controls the GUI components that get their content from iText's PdfReader.

Field Summary

protected javax.swing.JTabbedPane	editorTabs Tabbed Pane containing other components.
protected FormTree	form Treeview of the form.
protected javax.swing.JTabbedPane	navigationTabs Tabbed Pane containing other components.
protected TreeNodeFactory	nodes The factory producing tree nodes.
protected PdfObjectPanel	objectPanel A panel that will show PdfObjects.
protected OutlineTree	outlines Treeview of the outlines.
protected PagesTable	pages JTable with all the pages and their labels.
protected PdfTree	pdfTree Treeview of the PDF file.
protected StreamTextArea	streamArea A panel that will show a stream.
protected XRefTable	xref JTable corresponding with the CrossReference table.

Constructor Summary

PdfReaderController(javax.swing.event.TreeSelectionListener treeSelectionListener, PageNavigationListener pageNavigationListener)
Constructs the PdfReaderController.

Method Summary

javax.swing.JTabbedPane	getEditorTabs() Getter for the tabs with the editor windows (to which the Console window will be added).
javax.swing.JTabbedPane	getNavigationTabs() Getter for the tabs that allow you to navigate through the PdfTree quickly (pages, form, outlines, xref table).
PdfObjectPanel	getObjectPanel() Getter for the panel that will show the contents of a PDF Object (except for PdfStreams: only the Stream Dictionary will be shown; the content stream is shown in a StreamTextArea object).
PdfTree	getPdfTree() Getter for the PDF Tree.
StreamTextArea	getStreamArea() Getter for the object that holds the TextArea with the content stream of a PdfStream object.
void	gotoPage(int pageNumber) Selects the row in the pageTable that corresponds with a certain page number.
void	notifyObservers(java.lang.Object obj) The GUI components that show the internals of a PDF file, can only be shown if all objects are loaded into the IndirectObjectFactory using the ObjectLoader.
void	render(PdfObject object) Renders the syntax of a PdfObject in the objectPanel.
void	selectNode(int objectNumber) Selects a node in the PdfTree.
void	selectNode(PdfObjectTreeNode node) Selects a node in the PdfTree.
void	startObjectLoader(PdfFile file) Starts loading the PDF Objects in background.
void	update(java.util.Observable observable, java.lang.Object obj) Forwards updates from the RupsController to the Observers of this class.

Methods inherited from class java.util.Observable

addObserver, clearChanged, countObservers, deleteObserver, deleteObservers, hasChanged, notifyObservers, setChanged

Methods inherited from class java.lang.Object

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

Field Detail

pdfTree

protected PdfTree pdfTree

Treeview of the PDF file.

navigationTabs

protected javax.swing.JTabbedPane navigationTabs

Tabbed Pane containing other components.

pages

protected PagesTable pages

JTable with all the pages and their labels.

outlines

protected OutlineTree outlines

Treeview of the outlines.

form

protected FormTree form

Treeview of the form.

xref

protected XRefTable xref

JTable corresponding with the CrossReference table.

objectPanel

protected PdfObjectPanel objectPanel

A panel that will show PdfObjects.

editorTabs

protected javax.swing.JTabbedPane editorTabs

Tabbed Pane containing other components.

streamArea

protected StreamTextArea streamArea

A panel that will show a stream.

nodes

protected TreeNodeFactory nodes

The factory producing tree nodes.

Constructor Detail

PdfReaderController

public PdfReaderController(javax.swing.event.TreeSelectionListener treeSelectionListener,
                           PageNavigationListener pageNavigationListener)

Constructs the PdfReaderController. This is an Observable object to which all iText related GUI components are added as Observers.

Parameters:

treeSelectionListener - when somebody selects a tree node, this listener listens to the event

pageNavigationListener - when somebody changes a page, this listener changes accordingly

Method Detail

getPdfTree

public PdfTree getPdfTree()

Getter for the PDF Tree.

Returns:

the PdfTree object

getNavigationTabs

public javax.swing.JTabbedPane getNavigationTabs()

Getter for the tabs that allow you to navigate through the PdfTree quickly (pages, form, outlines, xref table).

Returns:

a JTabbedPane

getObjectPanel

public PdfObjectPanel getObjectPanel()

Getter for the panel that will show the contents of a PDF Object (except for PdfStreams: only the Stream Dictionary will be shown; the content stream is shown in a StreamTextArea object).

Returns:

the PdfObjectPanel

getEditorTabs

public javax.swing.JTabbedPane getEditorTabs()

Getter for the tabs with the editor windows (to which the Console window will be added).

getStreamArea

public StreamTextArea getStreamArea()

Getter for the object that holds the TextArea with the content stream of a PdfStream object.

Returns:

a StreamTextArea

startObjectLoader

public void startObjectLoader(PdfFile file)

Starts loading the PDF Objects in background.

Parameters:

file - the wrapper object that holds the PdfReader as member variable

notifyObservers

public void notifyObservers(java.lang.Object obj)

The GUI components that show the internals of a PDF file, can only be shown if all objects are loaded into the IndirectObjectFactory using the ObjectLoader. As soon as this is done, the GUI components are notified.

Overrides:

notifyObservers in class java.util.Observable

Parameters:

obj - in this case the Object should be an ObjectLoader

See Also:

Observable.notifyObservers(java.lang.Object)

selectNode

public void selectNode(PdfObjectTreeNode node)

Selects a node in the PdfTree.

Parameters:

node - a node in the PdfTree

selectNode

public void selectNode(int objectNumber)

Selects a node in the PdfTree.

Parameters:

objectNumber - a number of a node in the PdfTree

render

public void render(PdfObject object)

Renders the syntax of a PdfObject in the objectPanel. If the object is a PDF Stream, then the stream is shown in the streamArea too.

gotoPage

public void gotoPage(int pageNumber)

Selects the row in the pageTable that corresponds with a certain page number.

Parameters:

pageNumber - the page number that needs to be selected

update

public void update(java.util.Observable observable,
                   java.lang.Object obj)

Forwards updates from the RupsController to the Observers of this class.

Specified by:

update in interface java.util.Observer

Parameters:

observable - this should be the RupsController

obj - the object that has to be forwarded to the observers of PdfReaderController

See Also:

Observer.update(java.util.Observable, java.lang.Object)