DocumentFileExporterAndExternalViewer (Geneious Public API)

java.lang.Object
- com.biomatters.geneious.publicapi.plugin.DocumentFileExporter
- - com.biomatters.geneious.publicapi.plugin.DocumentFileExporterAndExternalViewer

```
public abstract class DocumentFileExporterAndExternalViewer
extends DocumentFileExporter
```
A file exporter with an associated external viewer.
An external viewer typically reads a file from the file system, so it is natural to associate an external viewer with an exporter since the documents have to be written to disk prior to external viewer invocation.

Field Summary
- Fields inherited from class com.biomatters.geneious.publicapi.plugin.DocumentFileExporter
  REPLACE_SPACES_IN_SEQUENCE_NAMES_OPTION_NAME

Constructor Summary

Constructors
Constructor Description

DocumentFileExporterAndExternalViewer()

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`abstract java.lang.String[]`	`defaultLinuxViewers()`	Linux application name(s) of viewers.
`abstract java.lang.String`	`viewerAppEnvironmentVariableName()`	Name of environment variable which let user specify her preferred external viewer.

Methods inherited from class com.biomatters.geneious.publicapi.plugin.DocumentFileExporter
export, export, getDefaultExtension, getFileTypeDescription, getOptions, getOptions, getOptionsForBatchExport, getProgrammaticOptions, getSelectionSignatures, getUniqueId, isProOnly, mayDiscardInformation

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

- Constructor Detail
  - DocumentFileExporterAndExternalViewer
```
public DocumentFileExporterAndExternalViewer()
```
- Method Detail
  - viewerAppEnvironmentVariableName
```
public abstract java.lang.String viewerAppEnvironmentVariableName()
```
    Name of environment variable which let user specify her preferred external viewer.
    Not required on Windows or Mac if file type is known to the operating system. On Linux a viewer will typically specify one or more default options via defaultLinuxViewers, so that a viewer may be found eeven when no environment variables are set.
    
    Returns:
    
    environment variable name
  - defaultLinuxViewers
```
public abstract java.lang.String[] defaultLinuxViewers()
```
    Linux application name(s) of viewers.
    
    Returns:
    
    A list of application names capable of displaying the document(s).