# Package org.jfree.ui

Utility classes for creating user interfaces.

See: Description

- Interface Summary
  Interface | Description
  --- | ---
  Drawable | An interface for an object that can draw itself within an area on a Graphics2D.
  ExtendedDrawable | A drawable that has a preferred size and aspect ratio.
  GradientPaintTransformer | The interface for a class that can transform a `GradientPaint` to fit an arbitrary shape.

- Class Summary
  Class | Description
  --- | ---
  Align | A utility class for aligning rectangles.
  ApplicationFrame | A base class for creating the main frame for simple applications.
  ArrowPanel | A basic panel that displays a small up or down arrow.
  BevelArrowIcon | An arrow icon that can point up or down (usually used to indicate the sort direction in a table).
  DateCellRenderer | A table cell renderer that formats dates.
  DateChooserPanel | A panel that allows the user to select a date.
  DrawablePanel | A component, that accepts a drawable and which draws that drawable.
  ExtensionFileFilter | A filter for JFileChooser that filters files by extension.
  FilesystemFilter | A filesystem filter.
  FloatDimension | A dimension object specified using `float` values.
  FloatingButtonEnabler | Enables a button to have a simple floating effect.
  FontChooserDialog | A dialog for choosing a font from the available system fonts.
  FontChooserPanel | A panel for choosing a font from the available system fonts - still a bit of a hack at the moment, but good enough for demonstration applications.
  FontDisplayField | A field for displaying a font selection.
  GradientPaintTransformType | Represents a type of transform for a `GradientPaint`.
  HorizontalAlignment | An enumeration of the horizontal alignment types (`LEFT`, `RIGHT` and `CENTER`).
  InsetsChooserPanel | A component for editing an instance of the Insets class.
  InsetsTextField | A JTextField for displaying insets.
  IntegerDocument | A document for editing integers.
  JTextObserver | An observer that selects all the text when a field gains the focus.
  KeyedComboBoxModel | The KeyedComboBox model allows to define an internal key (the data element) for every entry in the model.
  L1R1ButtonPanel | A 'ready-made' panel that has one button on the left and another button on the right - a layout manager takes care of resizing.
  L1R2ButtonPanel | A 'ready-made' panel that has one button on the left and two buttons on the right - nested panels and layout managers take care of resizing.
  L1R3ButtonPanel | A 'ready-made' panel that has one button on the left and three buttons on the right - nested panels and layout managers take care of resizing.
  Layer | Used to indicate either the foreground or background layer.
  LengthAdjustmentType | Represents the three options for adjusting a length: expand, contract, and no change.
  LengthLimitingDocument | This Document restricts the size of the contained plain text to the given number of characters.
  NumberCellRenderer | A table cell renderer that formats numbers with right alignment in each cell.
  OverlayLayout | A simple layoutmanager to overlay all components of a parent.
  PaintSample | A panel that displays a paint sample.
  RectangleAnchor | Used to indicate an anchor point for a rectangle.
  RectangleEdge | Used to indicate the edge of a rectangle.
  RectangleInsets | Represents the insets for a rectangle, specified in absolute or relative terms.
  RefineryUtilities | A collection of utility methods relating to user interfaces.
  SerialDateChooserPanel | A panel that allows the user to select a date.
  Size2D | A simple class for representing the dimensions of an object.
  SortableTable | A simple extension of JTable that supports the use of a SortableTableModel.
  SortableTableHeaderListener | Captures mouse clicks on a table header, with the intention of triggering a sort.
  SortableTableModel | The base class for a sortable table model.
  SortButtonRenderer | A table cell renderer for table headings - uses one of three JButton instances to indicate the sort order for the table column.
  Spinner | A very basic spinner component, used for demo purposes only.
  StandardDialog | The base class for standard dialogs.
  StandardGradientPaintTransformer | Transforms a `GradientPaint` to range over the width of a target shape.
  StrokeChooserPanel | A component for choosing a stroke from a list of available strokes.
  StrokeSample | A panel that displays a stroke sample.
  TextAnchor | Used to indicate the position of an anchor point for a text string.
  UIUtilities | A utility class to tune the Metal look and feel.
  VerticalAlignment | An enumeration of the vertical alignment types (`TOP`, `BOTTOM` and `CENTER`).
  WizardDialog | A dialog that presents the user with a sequence of steps for completing a task.
  WizardPanel | A panel that provides the user interface for a single step in a WizardDialog.

## Package org.jfree.ui Description

Utility classes for creating user interfaces.