Package weka.gui

Class SetInstancesPanel

java.lang.Object
java.awt.Component
java.awt.Container
javax.swing.JComponent
javax.swing.JPanel
weka.gui.SetInstancesPanel
All Implemented Interfaces:
ImageObserver, MenuContainer, Serializable, Accessible
public class SetInstancesPanel extends JPanel
A panel that displays an instance summary for a set of instances and lets the user open a set of instances from either a file or URL. Instances may be obtained either in a batch or incremental fashion. If incremental reading is used, then the client should obtain the Loader object (by calling getLoader()) and read the instances one at a time. If batch loading is used, then SetInstancesPanel will load the data into memory inside of a separate thread and notify the client when the operation is complete. The client can then retrieve the instances by calling getInstances().
Version:
$Revision: 15301 $
Author:
Len Trigg (trigg@cs.waikato.ac.nz)
See Also:

  • Field Details

  • Constructor Details

    • SetInstancesPanel

      public SetInstancesPanel()
      Default constructor.

    • SetInstancesPanel

      public SetInstancesPanel(boolean showZeroInstancesAsUnknown, boolean showClassComboBox, ConverterFileChooser chooser)
      Create the panel.
      Parameters:
      showZeroInstancesAsUnknown - whether to display zero instances as unknown (e.g., when reading data incrementally)
      showClassComboBox - whether to display a combobox allowing the user to choose the class attribute
      chooser - the file chooser to use (may be null to use the default file chooser)

  • Method Details

    • setParentFrame

      public void setParentFrame(JFrame parent)
      Sets the frame, this panel resides in. Used for displaying the close button, i.e., the close-button is visible if the given frame is not null.
      Parameters:
      parent - the parent frame

    • getParentFrame

      public JFrame getParentFrame()
      Returns the current frame the panel knows of, that it resides in. Can be null.
      Returns:
      the current parent frame

    • closeFrame

      public void closeFrame()
      closes the frame, i.e., the visibility is set to false.

    • setInstancesFromFileQ

      public void setInstancesFromFileQ()
      Queries the user for a file to load instances from, then loads the instances in a background process. This is done in the IO thread, and an error message is popped up if the IO thread is busy.

    • setInstancesFromURLQ

      public void setInstancesFromURLQ()
      Queries the user for a URL to load instances from, then loads the instances in a background process. This is done in the IO thread, and an error message is popped up if the IO thread is busy.

    • setInstances

      public void setInstances(Instances i)
      Updates the set of instances that is currently held by the panel.
      Parameters:
      i - a value of type 'Instances'

    • setInstances

      public void setInstances(Instances i, boolean showZeroInstancesAsUnknown)
      Updates the set of instances that is currently held by the panel.
      Parameters:
      i - a value of type 'Instances'
      showZeroInstancesAsUnknown - self-explanatory

    • getInstances

      public Instances getInstances()
      Gets the set of instances currently held by the panel.
      Returns:
      a value of type 'Instances'

    • getClassIndex

      public int getClassIndex()
      Returns the currently selected class index.
      Returns:
      the class index, -1 if none selected

    • getLoader

      public Loader getLoader()
      Gets the currently used Loader.
      Returns:
      a value of type 'Loader'

    • getSummary

      public InstancesSummaryPanel getSummary()
      Gets the instances summary panel associated with this panel.
      Returns:
      the instances summary panel

    • setReadIncrementally

      public void setReadIncrementally(boolean incremental)
      Sets whether or not instances should be read incrementally by the Loader. If incremental reading is used, then the client should obtain the Loader object (by calling getLoader()) and read the instances one at a time. If batch loading is used, then SetInstancesPanel will load the data into memory inside of a separate thread and notify the client when the operation is complete. The client can then retrieve the instances by calling getInstances().
      Parameters:
      incremental - true if instances are to be read incrementally

    • getReadIncrementally

      public boolean getReadIncrementally()
      Gets whether instances are to be read incrementally or not.
      Returns:
      true if instances are to be read incrementally

    • addPropertyChangeListener

      public void addPropertyChangeListener(PropertyChangeListener l)
      Adds a PropertyChangeListener who will be notified of value changes.
      Overrides:
      addPropertyChangeListener in class Container
      Parameters:
      l - a value of type 'PropertyChangeListener'

    • removePropertyChangeListener

      public void removePropertyChangeListener(PropertyChangeListener l)
      Removes a PropertyChangeListener.
      Overrides:
      removePropertyChangeListener in class Component
      Parameters:
      l - a value of type 'PropertyChangeListener'