Package nextapp.echo.app

Provides the core classes and components for creating Echo applications.

See:
Description

Interface Summary

Command	A stateless construct used to send an arbitrary command to the client.
DelegateFocusSupport	Interface to provide capability for composite components to delegate focus to a specific child.
FloatingPane	Marker interface describing a Pane Components which float above a region, e.g., WindowPanes.
ImageReference	A representation of an image / picture.
LayoutData	Describes the interface between a child Component and its parent Component.
ModalSupport	An interface for Components which support a modal state.
Pane	Marker interface describing a Component which fills a region.
PaneContainer	Marker interface describing a Component which may contain Panes as children.
RenderIdSupport	Interface for objects which may be identified for rendering purposes via via unique String identifiers.
Style	A representation of stylistic property information about a single instance or type of component.
StyleSheet	A collection of component-specific named styles.
TaskQueueHandle	Handle interface representing a queue of tasks to be run.

Class Summary

Alignment	A property object which describes the alignment or positioning of a particular item relative to others.
ApplicationInstance	A single user-instance of an Echo application.
AwtImageReference	An ImageReference describing an image which may be rendered from a java.awt.Image.
Border	A representation of a simple border.
Border.Side	A representation of one or more sides of a border.
Button	Button component: a stateless "push" button which is used to initiate an action.
CheckBox	CheckBox component: a simple on/off toggle button.
Color	A representation of a 24-bit RGB color.
Column	Column component: a layout container which renders its content in a single vertical column of cells.
Component	A representation of an Echo component.
Composite	Composite component: a generic composite component abstract base class.
ContentPane	ContentPane component: a high-level container/layout object which fills a region and optionally provides the capability to add FloatingPanes (e.g.
DecimalExtent	A representation of an integer linear distance with units.
DerivedMutableStyle	A MutableStyle which will retrieve properties from a "parent" style when they are not set locally.
Extent	A representation of an integer linear distance with units.
FillImage	Describes how an image should 'fill' a particular component or region of the user interface.
FillImageBorder	A representation of a graphical border drawn using a series of eight FillImages.
Font	An immutable representation of a text font, including typeface, size, and style.
Font.Typeface	An immutable representation of a type face.
Grid	Grid component: a layout container which displays children in a grid.
HttpImageReference	A reference to an image that may be retrieved through an HTTP request.
Insets	A property which describes an "inset" within a rectangular region.
Label	Label component: displays a text string, an icon, or both.
LayoutDirection	Describes the layout direction of text and content to provide support for bidirectional localization.
ListBox	ListBox component: a selection component which displays selection items in a list.
MutableStyle	A Style implementation which may be modified.
MutableStyleSheet	A mutable implementation of a StyleSheet.
Panel	Panel component: a single child container.
PasswordField	PasswordField component: a single-line text input field which masks input.
RadioButton	RadioButton component: a toggle button which allows a user to select one option from a group of options.
ResourceImageReference	A representation of an image that will be retrieved as a resource from the CLASSPATH.
Row	A layout container which renders its content in a single horizontal row of cells.
SelectField	SelectField component: a selection component which displays selection items in a drop-down field.
SplitPane	SplitPane component: a pane component which displays two components horizontally or vertically adjacent to one another, optionally allowing the user to apportion space between the two using a resize handle.
StreamImageReference	Base class for ImageReferences whose content is delivered by an OutputStream.
Table	A component used to display data in a tabular format.
TextArea	TextArea component: a multiple-line text input field.
TextField	TextField component: a single-line text input field.
Window	A top-level window.
WindowPane	WindowPane component: displays content in a movable and/or resizable window.

Exception Summary

IllegalChildException

An exception thrown when attempting to add a child to the component hierarchy where either the parent is incompatible with the child or the child is incompatible with the parent.

Package nextapp.echo.app Description

Provides the core classes and components for creating Echo applications.

Related Documentation

For more information please see:

• Echo Home Page