DualPageView (Big Faceless PDF Library 2.28.4)

java.lang.Object
- org.faceless.pdf2.viewer2.ViewerFeature
- - org.faceless.pdf2.viewer2.ViewerWidget
  - - org.faceless.pdf2.viewer2.ToggleViewerWidget
    - - org.faceless.pdf2.viewer2.feature.DualPageView

All Implemented Interfaces:

DocumentPanelListener
```
public class DualPageView
extends ToggleViewerWidget
implements DocumentPanelListener
```
This Widget changes the DocumentViewport of the current DocumentPanel to a DualPageDocumentViewport. The name of this feature is TwoPages
This code is copyright the Big Faceless Organization. You're welcome to use, modify and distribute it in any form in your own projects, provided those projects continue to make use of the Big Faceless PDF library.

Since:

2.13.1

Field Summary
- Fields inherited from class org.faceless.pdf2.viewer2.ViewerWidget
  propertyChangeSupport

Constructor Summary

Constructors
Constructor Description

DualPageView()
Create a new DualPageView object

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`action(ViewerEvent event)`	Toggle the active state of this widget by calling `ToggleViewerWidget.setSelected(boolean)`
`void`	`documentUpdated(DocumentPanelEvent event)`	Called when an `DocumentPanelEvent` is raised
`void`	`initialize(PDFViewer viewer)`	Called when the feature is first added to a viewer
`protected void`	`updateViewport(DocumentViewport vp, boolean selected)`	Called from `ToggleViewerWidget.setSelected(boolean)`, this method is called in each viewport in use by the `PDFViewer` or `DocumentPanel` so it can update its status.

Methods inherited from class org.faceless.pdf2.viewer2.ToggleViewerWidget
getGroupName, getGroupOwner, getGroupSelection, getWidgets, isSelected, setGroupOwner, setSelected, teardown

Methods inherited from class org.faceless.pdf2.viewer2.ViewerWidget
addPropertyChangeListener, createActionListener, firePropertyChange, getComponent, getIcon, getViewer, isButtonEnabledByDefault, isDocumentRequired, isMenuEnabledByDefault, removePropertyChangeListener, setButton, setComponent, setDocumentRequired, setMenu, setMenu, setToolBarEnabled, setToolBarEnabledAlways, setToolBarFloatable, setToolBarFloating, toString

Methods inherited from class org.faceless.pdf2.viewer2.ViewerFeature
getAllEnabledFeatures, getAllFeatures, getCustomJavaScript, getFeatureProperty, getFeatureURLProperty, getName, isEnabledByDefault, setFeatureName

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

- Constructor Detail
  - DualPageView
```
public DualPageView()
```
    Create a new DualPageView object
- Method Detail
  - updateViewport
```
protected void updateViewport(DocumentViewport vp,
                              boolean selected)
```
    Description copied from class: ToggleViewerWidget
    
    Called from ToggleViewerWidget.setSelected(boolean), this method is called in each viewport in use by the PDFViewer or DocumentPanel so it can update its status. By default it is a no-op.
    
    Overrides:
    
    updateViewport in class ToggleViewerWidget
  - action
```
public void action(ViewerEvent event)
```
    Description copied from class: ToggleViewerWidget
    
    Toggle the active state of this widget by calling ToggleViewerWidget.setSelected(boolean)
    
    Overrides:
    
    action in class ToggleViewerWidget
  - initialize
```
public void initialize(PDFViewer viewer)
```
    Description copied from class: ViewerFeature
    
    Called when the feature is first added to a viewer
    
    Overrides:
    
    initialize in class ToggleViewerWidget
  - documentUpdated
```
public void documentUpdated(DocumentPanelEvent event)
```
    Description copied from interface: DocumentPanelListener
    
    Called when an DocumentPanelEvent is raised
    
    Specified by:
    
    documentUpdated in interface DocumentPanelListener