java.lang.Object
- org.zkoss.stateless.state.IPdfviewerController

```
public class IPdfviewerController
extends java.lang.Object
```
An IPdfviewer controller to control zoom, rotate, navigating pages and some status with the given PDF viewer instance.
Note: this class is not thread-safe, so when it's used in multi-threading environment, the developer should handle the threading issue.

Author:

katherine

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`IPdfviewer`	`build()`	Returns the immutable Pdfviewer instance that the controller to build with.
`void`	`firstPage()`	Goes to the first page.
`int`	`getActivePage()`	Returns the active page (starting from 0).
`int`	`getPageCount()`	Returns the number of pages.
`int`	`getRotation()`	Returns the rotation angle.
`double`	`getZoom()`	Returns the zoom level.
`void`	`lastPage()`	Goes to the last page.
`void`	`nextPage()`	Goes to the next page.
`static IPdfviewerController`	`of(IPdfviewer owner)`	Returns the controller instance with the given `Pdfviewer`
`void`	`previousPage()`	Goes to the previous page.
`void`	`rotateClockwise()`	Rotates 90 degrees clockwise.
`void`	`rotateCounterclockwise()`	Rotates 90 degrees counterclockwise.
`void`	`setActivePage(int page)`	Sets the active page (starting from 0).
`void`	`setRotation(int rotation)`	Sets the rotation angle.
`void`	`setZoom(double zoom)`	Sets the zoom level.
`void`	`setZoom(IPdfviewer.ZoomMode zoomMode)`	Sets the zoom level.
`void`	`zoomIn()`	Zooms in by 10%.
`void`	`zoomOut()`	Zooms out by 10%.

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

- Method Detail
  - of
```
public static IPdfviewerController of(IPdfviewer owner)
```
    Returns the controller instance with the given Pdfviewer
    
    Parameters:
    
    owner - The controller to control with
  - build
```
public IPdfviewer build()
```
    Returns the immutable Pdfviewer instance that the controller to build with.
  - firstPage
```
public void firstPage()
```
    Goes to the first page.
  - previousPage
```
public void previousPage()
```
    Goes to the previous page.
  - nextPage
```
public void nextPage()
```
    Goes to the next page.
  - lastPage
```
public void lastPage()
```
    Goes to the last page.
  - zoomIn
```
public void zoomIn()
```
    Zooms in by 10%.
  - zoomOut
```
public void zoomOut()
```
    Zooms out by 10%.
  - rotateClockwise
```
public void rotateClockwise()
```
    Rotates 90 degrees clockwise.
  - rotateCounterclockwise
```
public void rotateCounterclockwise()
```
    Rotates 90 degrees counterclockwise.
  - getActivePage
```
public int getActivePage()
```
    Returns the active page (starting from 0).
  - setActivePage
```
public void setActivePage(int page)
                   throws WrongValueException
```
    Sets the active page (starting from 0).
    
    Throws:
    
    WrongValueException
  - getZoom
```
public double getZoom()
```
    Returns the zoom level.
    Default: 1.0.
  - setZoom
```
public void setZoom(double zoom)
```
    Sets the zoom level.
  - setZoom
```
public void setZoom(IPdfviewer.ZoomMode zoomMode)
```
    Sets the zoom level.
    
    Parameters:
    
    zoomMode - IPdfviewer.ZoomMode.FIT_PAGE_HEIGHT or IPdfviewer.ZoomMode.FIT_PAGE_WIDTH
  - getRotation
```
public int getRotation()
```
    Returns the rotation angle.
    Default: 0.
  - setRotation
```
public void setRotation(int rotation)
```
    Sets the rotation angle.
    
    Parameters:
    
    rotation - rotation angle. Only 0, 90, 180 and 270 are accepted.
  - getPageCount
```
public int getPageCount()
```
    Returns the number of pages. Note: there is at least one page even no item at all.

Class IPdfviewerController

Method Summary

Methods inherited from class java.lang.Object

Method Detail

of

build

firstPage

previousPage

nextPage

lastPage

zoomIn

zoomOut

rotateClockwise

rotateCounterclockwise

getActivePage

setActivePage

getZoom

setZoom

setZoom

getRotation

setRotation

getPageCount