nextapp.echoservlet
Class ContentPaneUI

java.lang.Object
  nextapp.echoservlet.ComponentPeer
      nextapp.echoservlet.ContentPaneUI

All Implemented Interfaces:

java.util.EventListener, PaneUI, java.beans.PropertyChangeListener, java.io.Serializable, Service

public class ContentPaneUI

extends ComponentPeer

implements PaneUI, java.beans.PropertyChangeListener, Service

A peer object for ContentPanes. This class is responsible for rendering HTML documents that contain rendered components.

See Also:

Serialized Form

Field Summary

private static java.lang.String	BACKGROUND_IMAGE
private ImageManager	imageManager An image manager that will handle the background image of the content pane if one is used.
static Service	SERVICE_CONTENT_PANE_SCRIPT A JavaScript include that contains functionality required for content panes, such as functions that input and action components will use to notify the server of updated state.

Fields inherited from class nextapp.echoservlet.ComponentPeer

Fields inherited from interface nextapp.echoservlet.PaneUI

SCROLLING_ALWAYS, SCROLLING_AUTO, SCROLLING_NEVER

Constructor Summary

ContentPaneUI()
Creates a new ContentPaneUI.

Method Summary

static java.lang.String	getScriptSetAction(java.lang.String id, java.lang.String command) Returns the JavaScript method call necessary to send an action command.
static java.lang.String	getScriptSetParameter(java.lang.String id, java.lang.String value) Returns the JavaScript method call necessary to store a parameter in the Controller frame's hidden form.
java.lang.String	getScrolling() Returns the scrolling property of the pane.
java.lang.String	getUri(Connection conn) Returns the URI from which the pane's service may be rendered.
void	propertyChange(java.beans.PropertyChangeEvent e)
void	registered() Called when the component is registered.
void	service(Connection conn) Services an HTTP request.
void	unregistered() Called when the component is unregistered.

Methods inherited from class nextapp.echoservlet.ComponentPeer

addAncillaryService, generateId, getBackground, getChildCount, getChildren, getComponent, getFont, getForeground, getId, getInstancePeer, getParent, getPeer, redraw, registerAncillaryServices, removeAncillaryService, render, setComponent, setId, setInstancePeer, unregisterAncillaryServices

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface nextapp.echoservlet.PaneUI

getId

Methods inherited from interface nextapp.echoservlet.Service

getId

Field Detail

BACKGROUND_IMAGE

private static final java.lang.String BACKGROUND_IMAGE

See Also:

Constant Field Values

SERVICE_CONTENT_PANE_SCRIPT

public static final Service SERVICE_CONTENT_PANE_SCRIPT

A JavaScript include that contains functionality required for content panes, such as functions that input and action components will use to notify the server of updated state. This script will be referenced in every content pane.

imageManager

private ImageManager imageManager

An image manager that will handle the background image of the content pane if one is used.

Constructor Detail

ContentPaneUI

public ContentPaneUI()

Creates a new ContentPaneUI.

Method Detail

getScriptSetAction

public static java.lang.String getScriptSetAction(java.lang.String id,
                                                  java.lang.String command)

Returns the JavaScript method call necessary to send an action command. This method is called by components to generate script that will cause server interaction. For instance, a button that generates a link might make its element's "href" attribute: "javascript:E_setAction('4f', 'press')", such that the server would be notified that component '4f' triggered an action with the command 'press'. On the server, the ComponentPeer with Id '4f' would have its clientActionPerformed() method called with the parameter 'press'.

Parameters:

id - The Id of the component setting the action.

command - The action command that is to be sent.

getScriptSetParameter

public static java.lang.String getScriptSetParameter(java.lang.String id,
                                                     java.lang.String value)

Returns the JavaScript method call necessary to store a parameter in the Controller frame's hidden form. During the next server interaction, the data held in this hidden parameter will be provided to the ComponentPeer with the corresponding Id. The value will be sent as the parameter of a clientInput() method call.

Parameters:

id - The Id of the component setting the parameter.

value - The new value of the parameter.

getScrolling

public java.lang.String getScrolling()

Description copied from interface: PaneUI

Returns the scrolling property of the pane.

Specified by:

getScrolling in interface PaneUI

Returns:

The scrolling property of the pane, one of the following values:

• SCROLLING_AUTO
• SCROLLING_ALWAYS
• SCROLLING_NEVER

See Also:

PaneUI.getScrolling()

getUri

public java.lang.String getUri(Connection conn)

Description copied from interface: PaneUI

Returns the URI from which the pane's service may be rendered.

Specified by:

getUri in interface PaneUI

Parameters:

conn - The connection from which to derive the URI.

Returns:

The URI from which the pane's service may be rendered.

See Also:

PaneUI.getUri(Connection)

propertyChange

public void propertyChange(java.beans.PropertyChangeEvent e)

Specified by:

propertyChange in interface java.beans.PropertyChangeListener

See Also:

PropertyChangeListener.propertyChange(PropertyChangeEvent)

registered

public void registered()

Description copied from class: ComponentPeer

Called when the component is registered. This method should be overridden if necessary.

Overrides:

registered in class ComponentPeer

See Also:

ComponentPeer.registered()

service

public void service(Connection conn)

Description copied from interface: Service

Services an HTTP request. Information about the HTTP request as well as methods for issuing a response are available from the provided Connection object.

Specified by:

service in interface Service

Parameters:

conn - A Connection object which wraps HttpServletRequest and HttpServletResponse objects and provides access to the facilities of the Echo application container.

See Also:

Service.service(Connection)

unregistered

public void unregistered()

Description copied from class: ComponentPeer

Called when the component is unregistered. This method should be overridden if necessary.

Overrides:

unregistered in class ComponentPeer

See Also:

ComponentPeer.unregistered()