Class Tray

java.lang.Object

org.eclipse.swt.widgets.Widget

org.eclipse.swt.widgets.Tray

public class Tray
extends Widget

Instances of this class represent the system tray that is part of the task bar status area on some operating systems.

Styles:

(none)

Events:

(none)

IMPORTANT: This class is not intended to be subclassed.

Since:

3.0

See Also:

• Display.getSystemTray()
• Tray, TrayItem snippets
• Sample code and further information

Field Summary

Fields

Modifier and Type	Field	Description
(package private) int	itemCount
(package private) TrayItem[]	items

Fields inherited from class Widget

ACTIVATE, ACTIVATE_INVERSE, AUTO_TEXT_DIRECTION, BACKGROUND, BACKSPACE, BACKSPACE_INVERSE, BUTTON_PRESS_EVENT, BUTTON_PRESS_EVENT_INVERSE, BUTTON_RELEASE_EVENT, BUTTON_RELEASE_EVENT_INVERSE, CANVAS, CHANGE_VALUE, CHANGED, CHECK_SUBWINDOW, CLICKED, CLOSE_REQUEST, COMMIT, COMPUTE_SIZE, CONFIGURE_EVENT, COPY_CLIPBOARD, COPY_CLIPBOARD_INVERSE, CREATE_MENU_PROXY, CUT_CLIPBOARD, CUT_CLIPBOARD_INVERSE, data, DAY_SELECTED, DAY_SELECTED_DOUBLE_CLICK, DECELERATE, DEFAULT_HEIGHT, DEFAULT_WIDTH, DELETE_EVENT, DELETE_FROM_CURSOR, DELETE_FROM_CURSOR_INVERSE, DELETE_RANGE, DELETE_TEXT, DIRECTION_CHANGED, DISABLED, display, DISPOSE_SENT, DISPOSED, DPI_CHANGED, DRAG_DETECT, DRAW, ENTER, ENTER_NOTIFY_EVENT, EVENT, EVENT_AFTER, eventTable, EXPAND_COLLAPSE_CURSOR_ROW, EXPOSE_EVENT, EXPOSE_EVENT_INVERSE, FOCUS, FOCUS_IN, FOCUS_IN_EVENT, FOCUS_OUT, FOCUS_OUT_EVENT, FONT, FOREGROUND, FOREIGN_HANDLE, gdkSeatGrabPrepareFunc, GESTURE_PRESSED, GESTURE_RELEASED, GRAB_FOCUS, handle, HANDLE, HAS_AUTO_DIRECTION, HIDDEN, HIDE, ICON_RELEASE, IM_UPDATE, INPUT, INSERT_TEXT, IS_ACTIVE, KEY_CHECK_SUBWINDOW, KEY_GTK_CSS, KEY_PRESS_EVENT, KEY_PRESSED, KEY_RELEASE_EVENT, KEY_RELEASED, KEYED_DATA, LAST_SIGNAL, LAYOUT_CHANGED, LAYOUT_CHILD, LAYOUT_NEEDED, LEAVE, LEAVE_NOTIFY_EVENT, MAP, MAP_EVENT, MENU, MNEMONIC_ACTIVATE, MONTH_CHANGED, MOTION, MOTION_INVERSE, MOTION_NOTIFY_EVENT, MOTION_NOTIFY_EVENT_INVERSE, MOVE_CURSOR, MOVE_CURSOR_INVERSE, MOVE_FOCUS, MOVED, NOTIFY_DEFAULT_HEIGHT, NOTIFY_DEFAULT_WIDTH, NOTIFY_MAXIMIZED, NOTIFY_STATE, OBSCURED, OUTPUT, PARENT_BACKGROUND, PASTE_CLIPBOARD, PASTE_CLIPBOARD_INVERSE, POPPED_UP, POPULATE_POPUP, POPUP_MENU, PREEDIT_CHANGED, REALIZE, RELEASED, RESIZED, ROW_ACTIVATED, ROW_DELETED, ROW_HAS_CHILD_TOGGLED, ROW_INSERTED, SCROLL, SCROLL_BEGIN, SCROLL_CHILD, SCROLL_END, SCROLL_EVENT, SELECT, SELECTION_DONE, SHOW, SHOW_HELP, SIZE_ALLOCATE, SIZE_ALLOCATE_GTK4, SKIN_NEEDED, START_INTERACTIVE_SEARCH, state, STATUS_ICON_POPUP_MENU, style, STYLE_UPDATED, SWITCH_PAGE, TEST_COLLAPSE_ROW, TEST_EXPAND_ROW, TEXT_BUFFER_INSERT_TEXT, THEME_BACKGROUND, TOGGLED, UNMAP, UNMAP_EVENT, UNREALIZE, VALUE_CHANGED, WINDOW_STATE_EVENT, ZERO_HEIGHT, ZERO_WIDTH

Constructor Summary

Constructors

Constructor	Description
Tray(Display display, int style)

Method Summary

Modifier and Type	Method	Description
(package private) void	createItem(TrayItem item, int index)
(package private) void	destroyItem(TrayItem item)
TrayItem	getItem(int index)	Returns the item at the given, zero-relative index in the receiver.
int	getItemCount()	Returns the number of items contained in the receiver.
TrayItem[]	getItems()	Returns an array of TrayItems which are the items in the receiver.
(package private) void	releaseChildren(boolean destroy)
(package private) void	releaseParent()
(package private) void	reskinChildren(int flags)

Methods inherited from class Widget

_addListener, addDisposeListener, addListener, addTypedListener, cellDataProc, checkBits, checkOpen, checkOrientation, checkParent, checkSubclass, checkWidget, convertPangoFontDescriptionToCss, createHandle, createWidget, cssHandle, deregister, destroyWidget, dispose, dpiChanged, enterMotionProc, error, filterProc, filters, fixMnemonic, fixMnemonic, fixMnemonic, focusProc, fontHeight, gdk_event_free, gdk_event_get_state, gdk_event_get_surface_or_window, gdk_pointer_grab, gdk_pointer_ungrab, gdk_surface_get_size, gdk_window_get_size, GdkSeatGrabPrepareFunc, gesturePressReleaseProc, getData, getData, getDisplay, getListeners, getName, getNameText, getStyle, getTypedListeners, gtk_activate, gtk_adjustment_get, gtk_box_new, gtk_box_pack_end, gtk_box_set_child_packing, gtk_button_press_event, gtk_button_release_event, gtk_cell_renderer_get_preferred_size, gtk_change_value, gtk_changed, gtk_clicked, gtk_close_request, gtk_commit, gtk_configure_event, gtk_container_get_border_width_or_margin, gtk_container_set_border_width, gtk_create_menu_proxy, gtk_day_selected, gtk_day_selected_double_click, gtk_delete_event, gtk_delete_range, gtk_delete_text, gtk_draw, gtk_enter_notify_event, gtk_expand_collapse_cursor_row, gtk_focus, gtk_focus_in_event, gtk_focus_out_event, gtk_gesture_press_event, gtk_gesture_release_event, gtk_grab_focus, gtk_hide, gtk_icon_release, gtk_input, gtk_insert_text, gtk_leave_notify_event, gtk_map, gtk_map_event, gtk_menu_popped_up, gtk_mnemonic_activate, gtk_month_changed, gtk_motion_notify_event, gtk_move_focus, gtk_output, gtk_populate_popup, gtk_preedit_changed, gtk_realize, gtk_row_activated, gtk_row_has_child_toggled, gtk_scroll_child, gtk_scroll_event, gtk_select, gtk_selection_done, gtk_show, gtk_size_allocate, gtk_start_interactive_search, gtk_status_icon_popup_menu, gtk_style_updated, gtk_switch_page, gtk_test_collapse_row, gtk_test_expand_row, gtk_text_buffer_insert_text, gtk_timer, gtk_toggled, gtk_tree_view_column_cell_get_position, gtk_unmap, gtk_unmap_event, gtk_unrealize, gtk_value_changed, gtk_widget_get_preferred_size, gtk_widget_get_surface, gtk_widget_get_window, gtk_widget_hide, gtk_widget_show, gtk_widget_size_allocate, gtk_window_state_event, gtk3_event_after, gtk3_key_press_event, gtk3_key_release_event, gtk3_popup_menu, gtk3_show_help, gtk4_draw, gtk4_enter_event, gtk4_focus_enter_event, gtk4_focus_leave_event, gtk4_focus_window_event, gtk4_key_press_event, gtk4_key_release_event, gtk4_leave_event, gtk4_motion_event, gtk4_scroll_event, hookEvents, hooks, hoverProc, isActive, isAutoDirection, isDisposed, isListening, isValidSubclass, isValidThread, keyPressReleaseProc, leaveProc, mnemonicHit, mnemonicMatch, notifyCreationTracker, notifyDisposalTracker, notifyListeners, notifyProc, notifyState, paintSurface, paintWindow, postEvent, postEvent, register, release, releaseHandle, releaseWidget, removeDisposeListener, removeListener, removeListener, removeListener, removeTypedListener, rendererGetPreferredWidthProc, rendererRenderProc, rendererSnapshotProc, reskin, reskinWidget, scrollProc, sendEvent, sendEvent, sendEvent, sendEvent, sendIMKeyEvent, sendKeyEvent, sendSelectionEvent, sendSelectionEvent, setButtonState, setData, setData, setFontDescription, setInputState, setKeyState, setLocationState, setOrientation, setTabGroupFocus, setTabItemFocus, setToolTipText, shellMapProc, sizeAllocateProc, sizeRequestProc, snapshotToDraw, timerProc, topHandle, toString, translateTraversal, windowActiveProc, windowProc, windowProc, windowProc, windowProc, windowProc

Methods inherited from class Object

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

Field Details

itemCount

int itemCount

items

TrayItem[] items

Constructor Details

Tray

Tray(Display display,
 int style)

Method Details

createItem

void createItem(TrayItem item,
 int index)

destroyItem

void destroyItem(TrayItem item)

getItem

public TrayItem getItem(int index)

Returns the item at the given, zero-relative index in the receiver. Throws an exception if the index is out of range.

Parameters:

index - the index of the item to return

Returns:

the item at the given index

Throws:

IllegalArgumentException -

• ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)

SWTException -

• ERROR_WIDGET_DISPOSED - if the receiver has been disposed
• ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

getItemCount

public int getItemCount()

Returns the number of items contained in the receiver.

Returns:

the number of items

Throws:

SWTException -

• ERROR_WIDGET_DISPOSED - if the receiver has been disposed
• ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

getItems

public TrayItem[] getItems()

Returns an array of TrayItems which are the items in the receiver.

Note: This is not the actual structure used by the receiver to maintain its list of items, so modifying the array will not affect the receiver.

Returns:

the items in the receiver

Throws:

SWTException -

• ERROR_WIDGET_DISPOSED - if the receiver has been disposed
• ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

releaseChildren

void releaseChildren(boolean destroy)

Overrides:

releaseChildren in class Widget

releaseParent

void releaseParent()

Overrides:

releaseParent in class Widget

reskinChildren

void reskinChildren(int flags)

Overrides:

reskinChildren in class Widget