Package com.pdftools.toolbox.pdf.content

Class OptionalContentMembership

java.lang.Object

com.pdftools.toolbox.internal.NativeBase

com.pdftools.toolbox.internal.NativeObject

com.pdftools.toolbox.pdf.content.OptionalContentMembership

public class OptionalContentMembership
extends NativeObject

Method Summary

Modifier and Type	Method	Description
boolean	dependsOn(OptionalContentGroup ocg)	Checks if the content element depends on a given OCG.
java.lang.String	getExpression()	The content element visibility function.
boolean	getIsVisible()	The element visibility.

Methods inherited from class com.pdftools.toolbox.internal.NativeObject

equals, hashCode

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

Method Detail

dependsOn

public boolean dependsOn(OptionalContentGroup ocg)

Checks if the content element depends on a given OCG.

Parameters:

ocg - The optional content group to be checked.

Returns:

Throws:

java.lang.IllegalArgumentException - if ocg is null

getIsVisible

public boolean getIsVisible()

The element visibility. (Getter)

true if the element is visible in the default configuration or toolbox.pdf.Document.getOptionalContentGroups is empty. false, otherwise.

Throws:

java.lang.IllegalStateException - the object has already been closed

getExpression

public java.lang.String getExpression()

The content element visibility function. (Getter)

Optional content membership expression defines the visibility as a boolean function of OCG indices in C syntax. The OCG index represents the position of the element in the OCG list which can be retreived by using toolbox.pdf.Document.getOptionalContentGroups. Example: "1 || 2" means that the content element is visible if either OCG 1 or OCG 2 is ON.

Alternatively, the evaluated expression can be fetched via getIsVisible().

Throws:

java.lang.IllegalStateException - the object has already been closed