com.vaadin.client.ui
Class VMenuBar

java.lang.Object
  SimplePanel
      com.vaadin.client.ui.SimpleFocusablePanel
          com.vaadin.client.ui.VMenuBar

All Implemented Interfaces:

com.google.gwt.event.logical.shared.CloseHandler<PopupPanel>, com.google.gwt.event.shared.EventHandler, Focusable, SubPartAware

public class VMenuBar
extends SimpleFocusablePanel
implements com.google.gwt.event.logical.shared.CloseHandler<PopupPanel>, SubPartAware

Nested Class Summary

static class

VMenuBar.CustomMenuItem A class to hold information on menu items

Field Summary

static java.lang.String	CLASSNAME Set the CSS class name to allow styling.
ApplicationConnection	client For internal use only.
VMenuBar	collapsedRootItems For internal use only.
protected Element	containerElement
static Command	emptyCommand An empty command to be used when the item has no command associated
boolean	enabled For internal use only.
VMenuBar	hostReference For internal use only.
boolean	htmlContentAllowed For internal use only.
protected java.util.ArrayList<VMenuBar.CustomMenuItem>	items
protected boolean	menuVisible
VMenuBar.CustomMenuItem	moreItem For internal use only.
boolean	openRootOnHover For internal use only.
protected VMenuBar	parentMenu
protected VOverlay	popup
protected VMenuBar.CustomMenuItem	selected
protected boolean	subMenu Widget fields
static java.lang.String	SUBMENU_CLASSNAME_PREFIX
java.lang.String	uidlId For server connections.
protected VMenuBar	visibleChildMenu

Constructor Summary

VMenuBar()

VMenuBar(boolean subMenu, VMenuBar parentMenu)

Method Summary

VMenuBar.CustomMenuItem	addItem(java.lang.String html, Command cmd) Add a new item to this menu
void	addItem(VMenuBar.CustomMenuItem item) Add a new item to this menu
void	addItem(VMenuBar.CustomMenuItem item, int index)
java.lang.String	buildItemHTML(UIDL item) Build the HTML content for a menu item.
void	clearItems() Remove all the items in this menu
protected int	getCloseMenuKey() Get the key that closes the menu.
com.google.gwt.user.client.Element	getContainerElement() Returns the containing element of the menu
java.util.List<VMenuBar.CustomMenuItem>	getItems() Returns a list of items in this menu
VMenuBar.CustomMenuItem	getMenuItemWithElement(com.google.gwt.user.client.Element element) Deprecated. As of 7.2, call or override getMenuItemWithElement(Element) instead
VMenuBar.CustomMenuItem	getMenuItemWithElement(Element element) Get menu item with given DOM element
protected int	getNavigationDownKey() Get the key that moves the selection downwards.
protected int	getNavigationLeftKey() Get the key that moves the selection left.
protected int	getNavigationRightKey() Get the key that moves the selection right.
protected int	getNavigationSelectKey() Deprecated. use isNavigationSelectKey(int) instead
protected int	getNavigationUpKey() Get the key that moves the selection upwards.
VMenuBar	getParentMenu() Returns the parent menu of this menu, or null if this is the top-level menu
VMenuBar.CustomMenuItem	getSelected() Returns the currently selected item of this menu, or null if nothing is selected
com.google.gwt.user.client.Element	getSubPartElement(java.lang.String subPart) Locates an element inside a component using the identifier provided in subPart.
java.lang.String	getSubPartName(com.google.gwt.user.client.Element subElement) Provides an identifier that identifies the element within the component.
boolean	handleNavigation(int keycode, boolean ctrl, boolean shift) Handles the keyboard events handled by the MenuBar
void	hideChildMenu(VMenuBar.CustomMenuItem item) Hides the submenu of an item
void	hideChildren() Recursively hide all child menus
void	hideParents(boolean autoClosed) Recursively hide all parent menus
void	iLayout()
void	iLayout(boolean iconLoadEvent)
protected boolean	isNavigationSelectKey(int keycode) Checks whether key code selects a menu item.
void	itemClick(VMenuBar.CustomMenuItem item) When an item is clicked
void	itemOut(VMenuBar.CustomMenuItem item) When the mouse is moved away from an item
void	itemOver(VMenuBar.CustomMenuItem item) When the user hovers the mouse over the item
void	onBrowserEvent(Event e)
void	onClose(com.google.gwt.event.logical.shared.CloseEvent<PopupPanel> event) Listener method, fired when this menu is closed
protected void	onDetach()
void	onFocus(FocusEvent event)
void	onKeyDown(KeyDownEvent event)
void	onKeyPress(KeyPressEvent event)
void	onMenuClick(int clickedItemId) This is called by the items in the menu and it communicates the information to the server
void	onShow() When the menu is shown.
void	removeItem(VMenuBar.CustomMenuItem item) Remove the given item from this menu
void	setParentMenu(VMenuBar parent) Set the parent menu of this menu
void	setSelected(VMenuBar.CustomMenuItem item) Set the currently selected item of this menu
void	setStyleName(java.lang.String style)
void	setStylePrimaryName(java.lang.String style)
void	showChildMenu(VMenuBar.CustomMenuItem item) Shows the child menu of an item.
protected void	showChildMenuAt(VMenuBar.CustomMenuItem item, int top, int left)
protected void	updateStyleNames()

Methods inherited from class com.vaadin.client.ui.SimpleFocusablePanel

addBlurHandler, addFocusHandler, addKeyDownHandler, addKeyPressHandler, addKeyUpHandler, focus, setFocus, setTabIndex

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.google.gwt.event.logical.shared.CloseHandler

onClose

Field Detail

CLASSNAME

public static final java.lang.String CLASSNAME

Set the CSS class name to allow styling.

See Also:

Constant Field Values

SUBMENU_CLASSNAME_PREFIX

public static final java.lang.String SUBMENU_CLASSNAME_PREFIX

See Also:

Constant Field Values

uidlId

public java.lang.String uidlId

For server connections.

For internal use only. May be removed or replaced in the future.

client

public ApplicationConnection client

For internal use only. May be removed or replaced in the future.

hostReference

public final VMenuBar hostReference

For internal use only. May be removed or replaced in the future.

moreItem

public VMenuBar.CustomMenuItem moreItem

For internal use only. May be removed or replaced in the future.

collapsedRootItems

public VMenuBar collapsedRootItems

For internal use only. May be removed or replaced in the future.

emptyCommand

public static final Command emptyCommand

An empty command to be used when the item has no command associated

For internal use only. May be removed or replaced in the future.

subMenu

protected boolean subMenu

Widget fields

items

protected java.util.ArrayList<VMenuBar.CustomMenuItem> items

containerElement

protected Element containerElement

popup

protected VOverlay popup

visibleChildMenu

protected VMenuBar visibleChildMenu

menuVisible

protected boolean menuVisible

parentMenu

protected VMenuBar parentMenu

selected

protected VMenuBar.CustomMenuItem selected

enabled

public boolean enabled

For internal use only. May be removed or replaced in the future.

openRootOnHover

public boolean openRootOnHover

For internal use only. May be removed or replaced in the future.

htmlContentAllowed

public boolean htmlContentAllowed

For internal use only. May be removed or replaced in the future.

Constructor Detail

VMenuBar

public VMenuBar()

VMenuBar

public VMenuBar(boolean subMenu,
                VMenuBar parentMenu)

Method Detail

setStyleName

public void setStyleName(java.lang.String style)

setStylePrimaryName

public void setStylePrimaryName(java.lang.String style)

updateStyleNames

protected void updateStyleNames()

onDetach

protected void onDetach()

buildItemHTML

public java.lang.String buildItemHTML(UIDL item)

Build the HTML content for a menu item.

For internal use only. May be removed or replaced in the future.

onMenuClick

public void onMenuClick(int clickedItemId)

This is called by the items in the menu and it communicates the information to the server

Parameters:

clickedItemId - id of the item that was clicked

getItems

public java.util.List<VMenuBar.CustomMenuItem> getItems()

Returns a list of items in this menu

clearItems

public void clearItems()

Remove all the items in this menu

getContainerElement

public com.google.gwt.user.client.Element getContainerElement()

Returns the containing element of the menu

Returns:

addItem

public VMenuBar.CustomMenuItem addItem(java.lang.String html,
                                       Command cmd)

Add a new item to this menu

Parameters:

html - items text

cmd - items command

Returns:

the item created

addItem

public void addItem(VMenuBar.CustomMenuItem item)

Add a new item to this menu

Parameters:

item -

addItem

public void addItem(VMenuBar.CustomMenuItem item,
                    int index)

removeItem

public void removeItem(VMenuBar.CustomMenuItem item)

Remove the given item from this menu

Parameters:

item -

onBrowserEvent

public void onBrowserEvent(Event e)

itemClick

public void itemClick(VMenuBar.CustomMenuItem item)

When an item is clicked

Parameters:

item -

itemOver

public void itemOver(VMenuBar.CustomMenuItem item)

When the user hovers the mouse over the item

Parameters:

item -

itemOut

public void itemOut(VMenuBar.CustomMenuItem item)

When the mouse is moved away from an item

Parameters:

item -

showChildMenu

public void showChildMenu(VMenuBar.CustomMenuItem item)

Shows the child menu of an item. The caller must ensure that the item has a submenu.

Parameters:

item -

showChildMenuAt

protected void showChildMenuAt(VMenuBar.CustomMenuItem item,
                               int top,
                               int left)

hideChildMenu

public void hideChildMenu(VMenuBar.CustomMenuItem item)

Hides the submenu of an item

Parameters:

item -

onShow

public void onShow()

When the menu is shown.

onClose

public void onClose(com.google.gwt.event.logical.shared.CloseEvent<PopupPanel> event)

Listener method, fired when this menu is closed

hideChildren

public void hideChildren()

Recursively hide all child menus

hideParents

public void hideParents(boolean autoClosed)

Recursively hide all parent menus

getParentMenu

public VMenuBar getParentMenu()

Returns the parent menu of this menu, or null if this is the top-level menu

Returns:

setParentMenu

public void setParentMenu(VMenuBar parent)

Set the parent menu of this menu

Parameters:

parent -

getSelected

public VMenuBar.CustomMenuItem getSelected()

Returns the currently selected item of this menu, or null if nothing is selected

Returns:

setSelected

public void setSelected(VMenuBar.CustomMenuItem item)

Set the currently selected item of this menu

Parameters:

item -

iLayout

public void iLayout()

iLayout

public void iLayout(boolean iconLoadEvent)

onKeyPress

public void onKeyPress(KeyPressEvent event)

onKeyDown

public void onKeyDown(KeyDownEvent event)

getNavigationUpKey

protected int getNavigationUpKey()

Get the key that moves the selection upwards. By default it is the up arrow key but by overriding this you can change the key to whatever you want.

Returns:

The keycode of the key

getNavigationDownKey

protected int getNavigationDownKey()

Get the key that moves the selection downwards. By default it is the down arrow key but by overriding this you can change the key to whatever you want.

Returns:

The keycode of the key

getNavigationLeftKey

protected int getNavigationLeftKey()

Get the key that moves the selection left. By default it is the left arrow key but by overriding this you can change the key to whatever you want.

Returns:

The keycode of the key

getNavigationRightKey

protected int getNavigationRightKey()

Get the key that moves the selection right. By default it is the right arrow key but by overriding this you can change the key to whatever you want.

Returns:

The keycode of the key

getNavigationSelectKey

@Deprecated
protected int getNavigationSelectKey()

Deprecated. use isNavigationSelectKey(int) instead

Get the key that selects a menu item. By default it is the Enter key but by overriding this you can change the key to whatever you want.

Returns:

isNavigationSelectKey

protected boolean isNavigationSelectKey(int keycode)

Checks whether key code selects a menu item. By default it is the Enter and Space keys but by overriding this you can change the keys to whatever you want.

Parameters:

keycode -

Returns:

true if key selects menu item

Since:

7.2

getCloseMenuKey

protected int getCloseMenuKey()

Get the key that closes the menu. By default it is the escape key but by overriding this yoy can change the key to whatever you want.

Returns:

handleNavigation

public boolean handleNavigation(int keycode,
                                boolean ctrl,
                                boolean shift)

Handles the keyboard events handled by the MenuBar

Parameters:

event - The keyboard event received

Returns:

true iff the navigation event was handled

onFocus

public void onFocus(FocusEvent event)

getSubPartElement

public com.google.gwt.user.client.Element getSubPartElement(java.lang.String subPart)

Description copied from interface: SubPartAware

Locates an element inside a component using the identifier provided in subPart. The subPart identifier is component specific and may be any string of characters, numbers, space characters and brackets.

Specified by:

getSubPartElement in interface SubPartAware

Parameters:

subPart - The identifier for the element inside the component

Returns:

The element identified by subPart or null if the element could not be found.

getSubPartName

public java.lang.String getSubPartName(com.google.gwt.user.client.Element subElement)

Description copied from interface: SubPartAware

Provides an identifier that identifies the element within the component. The subElement is a part of the component and must never be null.

Note! getSubPartElement(getSubPartName(element)) == element is not always true. A component can choose to provide a more generic identifier for any given element if the results of all interactions with subElement are the same as interactions with the element identified by the return value. For example a button can return an identifier for the root element even though a DIV inside the button was passed as subElement because interactions with the DIV and the root button element produce the same result.

Specified by:

getSubPartName in interface SubPartAware

Parameters:

subElement - The element the identifier string should uniquely identify

Returns:

An identifier that uniquely identifies subElement or null if no identifier could be provided.

getMenuItemWithElement

@Deprecated
public VMenuBar.CustomMenuItem getMenuItemWithElement(com.google.gwt.user.client.Element element)

Deprecated. As of 7.2, call or override getMenuItemWithElement(Element) instead

Get menu item with given DOM element

Parameters:

element - Element used in search

Returns:

Menu item or null if not found

getMenuItemWithElement

public VMenuBar.CustomMenuItem getMenuItemWithElement(Element element)

Get menu item with given DOM element

Parameters:

element - Element used in search

Returns:

Menu item or null if not found

Since:

7.2