org.knime.base.node.io.arffreader
Class ARFFReaderNodeDialog

java.lang.Object
  extended by org.knime.core.node.NodeDialogPane
      extended by org.knime.base.node.io.arffreader.ARFFReaderNodeDialog
All Implemented Interfaces:
ItemListener, EventListener

public class ARFFReaderNodeDialog
extends NodeDialogPane
implements ItemListener

Contains the dialog for the ARFF file reader.

Author:
Peter Ohl, University of Konstanz

Constructor Summary
ARFFReaderNodeDialog()
          Creates a new ARFF file reader dialog.
 
Method Summary
 void itemStateChanged(ItemEvent e)
          
protected  void loadSettingsFrom(NodeSettingsRO settings, DataTableSpec[] specs)
          Invoked before the dialog window is opened.
protected  void popupFileChooser()
          Pops up the file selection dialog and sets the selected file path into the url combox box.
protected  void saveSettingsTo(NodeSettingsWO settings)
          Invoked when the settings need to be applied.
protected  void updateFileError()
          Updates the file error label whenever the file URL entered changed.
 
Methods inherited from class org.knime.core.node.NodeDialogPane
addJobMgrTab, addTab, addTabAt, createFlowVariableModel, createFlowVariableModel, createFlowVariableModel, finishEditingAndSaveSettingsTo, getAvailableFlowVariables, getPanel, getTab, getTabIndex, internalLoadSettingsFrom, loadSettingsFrom, loadSettingsFrom, onCancel, onClose, onOpen, removeTab, renameTab, saveSettingsTo, setEnabled, setSelected
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

ARFFReaderNodeDialog

public ARFFReaderNodeDialog()
Creates a new ARFF file reader dialog.

Method Detail

itemStateChanged

public void itemStateChanged(ItemEvent e)

Specified by:
itemStateChanged in interface ItemListener

updateFileError

protected void updateFileError()
Updates the file error label whenever the file URL entered changed.


popupFileChooser

protected void popupFileChooser()
Pops up the file selection dialog and sets the selected file path into the url combox box.


loadSettingsFrom

protected void loadSettingsFrom(NodeSettingsRO settings,
                                DataTableSpec[] specs)
                         throws NotConfigurableException
Invoked before the dialog window is opened. The settings object passed, contains the current settings of the corresponding node model. The model and the dialog must agree on a mutual contract on how settings are stored in the spec. I.e. they must able to read each other's settings.

The implementation must be able to handle invalid or incomplete settings as the model may not have any reasonable values yet (for example when the dialog is opened for the first time). When an empty/invalid settings object is passed the dialog should set default values in its components.

Overrides:
loadSettingsFrom in class NodeDialogPane
Parameters:
settings - The settings to load into the dialog. Could be an empty object or contain invalid settings. But will never be null.
specs - The input data table specs. Items of the array could be null if no spec is available from the corresponding input port.
Throws:
NotConfigurableException - if the dialog cannot be opened because of real invalid settings or if any preconditions are not fulfilled, e.g. no predecessor node, no nominal column in input table, etc.
See Also:
NodeModel.loadSettingsFrom(NodeSettingsRO)

saveSettingsTo

protected void saveSettingsTo(NodeSettingsWO settings)
                       throws InvalidSettingsException
Invoked when the settings need to be applied. The implementation should write the current user settings from its components into the passed object. It should not check consistency or completeness of the settings - this is part of the model's load method. The only situation this method would throw an exception is when a component contains an invalid value that can't be stored in the settings object.
The settings must be written in a way the model is able to load in, i.e. with the model's keys.

Specified by:
saveSettingsTo in class NodeDialogPane
Parameters:
settings - The settings object to write into.
Throws:
InvalidSettingsException - If the settings are not applicable to the model.
See Also:
NodeModel.loadSettingsFrom(NodeSettingsRO)


Copyright, 2003 - 2010. All rights reserved.
University of Konstanz, Germany.
Chair for Bioinformatics and Information Mining, Prof. Dr. Michael R. Berthold.
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