org.apache.pdfbox.pdmodel.interactive.form

Class PDButton

java.lang.Object

org.apache.pdfbox.pdmodel.interactive.form.PDField

org.apache.pdfbox.pdmodel.interactive.form.PDTerminalField

org.apache.pdfbox.pdmodel.interactive.form.PDButton

All Implemented Interfaces:

COSObjectable

Direct Known Subclasses:

PDCheckBox, PDPushButton, PDRadioButton

public abstract class PDButton
extends PDTerminalField

A button field represents an interactive control on the screen that the user can manipulate with the mouse.

Author:

sug

Method Summary

Modifier and Type	Method and Description
String	getDefaultValue() Returns the default value, if any.
List<String>	getExportValues() This will get the (optional) export values.
Set<String>	getOnValues() Get the values to set individual buttons within a group to the on state.
String	getValue() Returns the selected value.
String	getValueAsString() Returns a string representation of the "V" entry, or an empty string.
boolean	isPushButton() Determines if push button bit is set.
boolean	isRadioButton() Determines if radio button bit is set.
void	setDefaultValue(String value) Sets the default value.
void	setExportValues(List<String> values) This will set the export values.
void	setValue(int index) Set the selected option given its index, and try to update the visual appearance.
void	setValue(String value) Set the selected option given its name, and try to update the visual appearance.

Methods inherited from class org.apache.pdfbox.pdmodel.interactive.form.PDTerminalField

applyChange, getFieldFlags, getFieldType, getWidgets, importFDF, setActions, setWidgets

Methods inherited from class org.apache.pdfbox.pdmodel.interactive.form.PDField

getAcroForm, getActions, getAlternateFieldName, getCOSObject, getFullyQualifiedName, getInheritableAttribute, getMappingName, getParent, getPartialName, isNoExport, isReadOnly, isRequired, setAlternateFieldName, setFieldFlags, setMappingName, setNoExport, setPartialName, setReadOnly, setRequired, toString

Methods inherited from class java.lang.Object

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

Method Detail

isPushButton

public boolean isPushButton()

Determines if push button bit is set.

Returns:

true if type of button field is a push button.

isRadioButton

public boolean isRadioButton()

Determines if radio button bit is set.

Returns:

true if type of button field is a radio button.

getValue

public String getValue()

Returns the selected value.

Off is the default value which will also be returned if the value hasn't been set at all.

Returns:

A non-null string.

setValue

public void setValue(String value)
              throws IOException

Set the selected option given its name, and try to update the visual appearance.

Specified by:

setValue in class PDField

Parameters:

value - Name of option to select

Throws:

IOException - if the value could not be set

IllegalArgumentException - if the value is not a valid option.

setValue

public void setValue(int index)
              throws IOException

Set the selected option given its index, and try to update the visual appearance. NOTE: this method is only usable if there are export values and used for radio buttons with FLAG_RADIOS_IN_UNISON not set.

Parameters:

index - index of option to be selected

Throws:

IOException - if the value could not be set

IllegalArgumentException - if the index provided is not a valid index.

getDefaultValue

public String getDefaultValue()

Returns the default value, if any.

Returns:

A non-null string.

setDefaultValue

public void setDefaultValue(String value)

Sets the default value.

Parameters:

value - Name of option to select

Throws:

IllegalArgumentException - if the value is not a valid option.

getValueAsString

public String getValueAsString()

Description copied from class: PDField

Returns a string representation of the "V" entry, or an empty string.

Specified by:

getValueAsString in class PDField

Returns:

The list of widget annotations.

getExportValues

public List<String> getExportValues()

This will get the (optional) export values.

The export values are defined in the field dictionaries /Opt key.

The option values are used to define the export values for the field to

• hold values in non-Latin writing systems as name objects, which represent the field value, are limited to PDFDocEncoding
• allow radio buttons having the same export value to be handled independently

Returns:

List containing all possible export values. If there is no /Opt entry an empty list will be returned.

See Also:

getOnValues()

setExportValues

public void setExportValues(List<String> values)

This will set the export values.

Parameters:

values - List containing all possible export values. Supplying null or an empty list will remove the Opt entry.

See Also:

getExportValues()

getOnValues

public Set<String> getOnValues()

Get the values to set individual buttons within a group to the on state.

The On value could be an arbitrary string as long as it is within the limitations of a PDF name object. The Off value shall always be 'Off'. If not set or not part of the normal appearance keys 'Off' is the default

Returns:

the potential values setting the check box to the On state. If an empty Set is returned there is no appearance definition.