net.sourceforge.java.feednread.frontend.components.addressbar
Class NewsFeedAddressBar

java.lang.Object
  net.sourceforge.java.feednread.frontend.components.addressbar.NewsFeedAddressBar

All Implemented Interfaces:

EventListener, ILanguageResourceChangeListener

public class NewsFeedAddressBar

extends Object

implements ILanguageResourceChangeListener

An address bar component holding an editable Combo to input a web page or NewsFeed url or to select from addresses in the history.

Author:

Sebastian Machhausen

Nested Class Summary

private class

NewsFeedAddressBar.AddressSelectionHandler Event handler for all selection events triggered by the address field: - User types in new address and hits enter - User selects an existing address from the list

Field Summary

private Composite	addressBarContainer The container to hold all components of the NewsFeedAddressBar
private ViewForm	addressBarForm The form for style purpose
private Combo	addressField Editable address Combo holding all stored addresses
private NewsFeedAddressBar.AddressSelectionHandler	addressHandler Handles all selections made to the address field: User types in new address and hits enter User selects an existing address from the list All event handling is delegated to the EventCentral.
private Label	addressLabel Label for the address Text field
private ComboViewer	addressViewer The ComboViewer to act as bridge between the model and gui layer
private NewsFeedAddressBarContentProvider	contentProvider The content provider to act as model layer to the address Viewer
private MainApplicationWindow	mainWindow The Feed'n Read main window

Constructor Summary

NewsFeedAddressBar(Composite parent, MainApplicationWindow mainWindow)
Creates a new NewsFeedAddressBar instance embedding it into the specified parent component.

Method Summary

void	addAddress(String url) Adds the specified url to the list of managed addresses.
private void	createComponents(Composite parent) Creates all components required in this NewsFeedAddressBar context.
void	defaultLanguageChanged(LanguageResourceChangeEvent lrce) Called whenever the default language changes.
void	dispose()
String	getCurrentAddress() Gets the current address input as typed in by the user in the address field.
String	getSelectedAddress() Gets the currently selected address of this NewsFeedAddressBar.
boolean	isVisible() Gets the visibility status of this NewsFeedAddressBar component.
private void	registerEventHandler() Creates and registers all event handlers required in this NewsFeedAddressBar context.
void	removeAddress(String url) Removes the specified url from the list of managed addresses.
void	removeAllAddresses() Removes all urls from the list of managed addresses.
void	setCurrentAddress(String url) Sets the current address to the specified url.
void	setVisible(boolean visible) Sets the visibility status of this NewsFeedAddressBar component.
private void	unregisterEventHandler() Unregisters all event handlers required in this NewsFeedAddressBar context.

Methods inherited from class java.lang.Object

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

Field Detail

contentProvider

private NewsFeedAddressBarContentProvider contentProvider

The content provider to act as model layer to the address Viewer

mainWindow

private MainApplicationWindow mainWindow

The Feed'n Read main window

addressBarContainer

private Composite addressBarContainer

The container to hold all components of the NewsFeedAddressBar

addressBarForm

private ViewForm addressBarForm

The form for style purpose

addressLabel

private Label addressLabel

Label for the address Text field

addressField

private Combo addressField

Editable address Combo holding all stored addresses

addressViewer

private ComboViewer addressViewer

The ComboViewer to act as bridge between the model and gui layer

addressHandler

private NewsFeedAddressBar.AddressSelectionHandler addressHandler

Handles all selections made to the address field:

• User types in new address and hits enter
• User selects an existing address from the list

All event handling is delegated to the EventCentral.

Constructor Detail

NewsFeedAddressBar

public NewsFeedAddressBar(Composite parent,
                          MainApplicationWindow mainWindow)

Creates a new NewsFeedAddressBar instance embedding it into the specified parent component.

Parameters:

parent - the component to embed this NewsFeedAddressBar instance into

mainWindow - the Feed'n Read main window

Method Detail

defaultLanguageChanged

public void defaultLanguageChanged(LanguageResourceChangeEvent lrce)

Called whenever the default language changes.

Specified by:

defaultLanguageChanged in interface ILanguageResourceChangeListener

Parameters:

lrce - the triggered LanguageResourceChangeEvent

setVisible

public void setVisible(boolean visible)

Sets the visibility status of this NewsFeedAddressBar component.

Parameters:

visible - true for visible; false for invisible

isVisible

public boolean isVisible()

Gets the visibility status of this NewsFeedAddressBar component.

Returns:

visible true if visible; false if invisible

dispose

public void dispose()

addAddress

public void addAddress(String url)

Adds the specified url to the list of managed addresses. Prevents duplicates from being added.

Parameters:

url - the url to add

removeAddress

public void removeAddress(String url)

Removes the specified url from the list of managed addresses.

Parameters:

url - the url to remove

removeAllAddresses

public void removeAllAddresses()

Removes all urls from the list of managed addresses.

getSelectedAddress

public String getSelectedAddress()

Gets the currently selected address of this NewsFeedAddressBar.

Returns:

the currently selected address;null if nothing selected

See Also:

getCurrentAddress()

getCurrentAddress

public String getCurrentAddress()

Gets the current address input as typed in by the user in the address field. This value may differ from the one returned by the getSelectedAddress() method.

Returns:

the current address

See Also:

getSelectedAddress(), setCurrentAddress(String)

setCurrentAddress

public void setCurrentAddress(String url)

Sets the current address to the specified url. This method does not change the current selection.

Parameters:

url - the url to set as current address

See Also:

getCurrentAddress()

createComponents

private void createComponents(Composite parent)

Creates all components required in this NewsFeedAddressBar context.

Parameters:

parent - the component to embed the NewsFeedAddressBar components into

registerEventHandler

private void registerEventHandler()

Creates and registers all event handlers required in this NewsFeedAddressBar context.

unregisterEventHandler

private void unregisterEventHandler()

Unregisters all event handlers required in this NewsFeedAddressBar context.