PropertiesListener (cdk 2.9 API)

java.lang.Object
- org.openscience.cdk.io.listener.PropertiesListener

All Implemented Interfaces:

EventListener, IChemObjectIOListener, IReaderListener, IWriterListener
```
public class PropertiesListener
extends Object
implements IReaderListener, IWriterListener
```
Answers the questions by looking up the values in a Properties object. The question names match the property field names. If no answer is found in the Property object, or if the value is invalid, then the default is taken.
For the GaussianInputWriter the properties file might look like:
```
 Basis=6-31g
 Method=b3lyp
 Command=geometry optimization
 
```
Author:

Egon Willighagen <egonw@sci.kun.nl>

Source code:
main

Belongs to CDK module:
io

Constructor Summary

Constructors
Constructor Description

PropertiesListener(Properties props)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`frameRead(ReaderEvent event)`	Indicates that a new frame has been read.
`void`	`processIOSettingQuestion(IOSetting setting)`	Processes the IOSettings by listing the question, giving the options and asking the user to provide their choice.
`void`	`setOutputWriter(Writer writer)`	Overwrites the default writer to which the output is directed.

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

- Constructor Detail
  - PropertiesListener
```
public PropertiesListener(Properties props)
```
- Method Detail
  - setOutputWriter
```
public void setOutputWriter(Writer writer)
```
    Overwrites the default writer to which the output is directed.
  - frameRead
```
public void frameRead(ReaderEvent event)
```
    Description copied from interface: IReaderListener
    
    Indicates that a new frame has been read.
    
    Specified by:
    
    frameRead in interface IReaderListener
    
    Parameters:
    
    event - information about the event.
  - processIOSettingQuestion
```
public void processIOSettingQuestion(IOSetting setting)
```
    Processes the IOSettings by listing the question, giving the options and asking the user to provide their choice.
    Note: if the input reader is null, then the method does not wait for an answer, and takes the default.
    
    Specified by:
    
    processIOSettingQuestion in interface IChemObjectIOListener