UE3:UIContextMenu (UDK)

Object >> UIRoot >> UIScreenObject >> UIObject >> UIList >> UIContextMenu

Package: 

Engine

Implemented interfaces: 

UIDataStorePublisher

Known classes within UIContextMenu:

UIComp_ContextMenuListPresenter

This class in other games:

UT3

Displays a list of options for the user to choose from. Invoked when the user right-clicks on a widget which supports context menus, and the list of available options are context sensitive. Items can be either static (using static data providers) or modified at runtime.

Properties

bResolvePosition

Type: bool

Modifiers: transient, const

indicates that this context menu's position needs to be re-resolved during the next scene update

InvokingWidget

Type: UIObject

Modifiers: transient, const

the widget that invoked this context menu

MenuItems

Type: array<ContextMenuItem>

Modifiers: transient, const

Default values

Property	Value
bEnableActiveCursorUpdates	True
bEnableVerticalScrollbar	False
bHidden	True
bSingleClickSubmission	True
bUpdateItemUnderCursor	True
CellDataComponent	UIComp_ContextMenuListPresenter'ContextMenuDataComponent'
Children[0]	UIScrollbar'Engine.Default__UIContextMenu:VertScrollbarTemplate'
ColumnAutoSizeMode	CELLAUTOSIZE_AdjustList
Position	Member Value ScaleType[0] EVALPOS_PixelViewport ScaleType[1] EVALPOS_PixelViewport ScaleType[2] EVALPOS_PixelOwner ScaleType[3] EVALPOS_PixelOwner Value[2] 16.0 Value[3] 100.0
RowAutoSizeMode	CELLAUTOSIZE_AdjustList
VerticalScrollbar	UIScrollbar'Engine.Default__UIContextMenu:VertScrollbarTemplate'
WrapType	LISTWRAP_Jump

Subobjects

ContextMenuDataComponent

Class: Engine.UIComp_ContextMenuListPresenter

Property	Value
ListItemOverlay[0]	UITexture'Engine.Default__UIContextMenu:ContextMenuDataComponent.NormalOverlayTemplate'
ListItemOverlay[1]	UITexture'Engine.Default__UIContextMenu:ContextMenuDataComponent.ActiveOverlayTemplate'
ListItemOverlay[2]	UITexture'Engine.Default__UIContextMenu:ContextMenuDataComponent.SelectionOverlayTemplate'
ListItemOverlay[3]	UITexture'Engine.Default__UIContextMenu:ContextMenuDataComponent.HoverOverlayTemplate'

WidgetEventComponent

Class: Engine.UIComp_Event

Inherits from: UIList.WidgetEventComponent

No new values.

Enums

EContextMenuItemType

Different types of context menu items

CMIT_Normal 

A normal menu item

CMIT_Submenu 

A context menu item that has a submenu which is shown when the mouse is held over this menu item for a few seconds

CMIT_Separator 

Separates a group of context menu items

CMIT_Check 

Context menu item that supports a two states - on and off. State is represented by a check next to the item

CMIT_Radio 

Similar to CMIT_Check, except that only one menu item in a particular group can be selected at one time

Todo: ronp - determine how groups will be defined

Structs

ContextMenuItem

Modifiers: native, transient

Represents a single item in a context menu

Note: temporary; not sure if this struct will actually be used

UIContextMenu OwnerMenu 

pointer{struct FContextMenuItem} ParentItem 

EContextMenuItemType ItemType 

string ItemText 

int ItemId 

Default values:

Property	Value
ItemId	-1
ItemType	CMIT_Normal

Functions

Native functions

Close

native final function bool Close (int PlayerIndex)

Closes this context menu.

Returns:

TRUE if the context menu closed successfully; FALSE if it didn't close (as a result of OnClose returning FALSE, for example)

IsActiveContextMenu

native final function bool IsActiveContextMenu () const

Returns TRUE if this context menu is the scene's currently active context menu.

Open

native final function bool Open (int PlayerIndex)

Opens this context menu. Called by the owning scene when a new context menu is activated.

Parameters:

• PlayerIndex - the index of the player that triggered the context menu to be opened.

Returns:

TRUE if the context menu was successfully opened.

Events

ClearMenuItems

event bool ClearMenuItems (UIObject Widget)

Removes all context menu items from this context menu.

Parameters:

• Widget - the widget that invoked this context menu

Returns:

TRUE if the operation was successful.

FindMenuItemIndex

event int FindMenuItemIndex (UIObject Widget, string ItemToFind)

Finds the location of a string in the context menu's array of items.

Parameters:

• Widget - the widget that invoked this context menu
• ItemToFind - the string to find

Returns:

the index for the specified value, or INDEX_NONE if it couldn't be found.

GetAllMenuItems

event bool GetAllMenuItems (UIObject Widget, out array<string> out_MenuItems)

Gets a list of the current context menu items strings.

Parameters:

• Widget - the widget that invoked this context menu
• out_MenuItems - receives the context menu item strings

Returns:

TRUE if the operation was successful.

GetMenuItem

event bool GetMenuItem (UIObject Widget, int IndexToGet, out string out_MenuItem)

Gets the value of the context menu item located at a specified position in the array.

Parameters:

• Widget - the widget that invoked this context menu
• IndexToGet - the index of the context menu item to get
• out_MenuItem - receives the value of the context menu item text.

Returns:

TRUE if the value was successfully retrieved and copied to out_MenuItem.

InsertMenuItem

event bool InsertMenuItem (UIObject Widget, string Item, optional int InsertIndex, optional bool bAllowDuplicates)

Sets the text for a single context menu item.

Parameters:

• Widget - the widget that invoked this context menu
• Item - the text to add/insert to the context menu
• InsertIndex - the location [in the list's items array] to insert the new menu item; if not specified, will be appended to the end of the array.
• bAllowDuplicates - specify TRUE to allow multiple menu items with the same value; otherwise, the new value will not be added if an existing item has the same value.

Returns:

TRUE if the operation was successful.

RemoveMenuItem

event bool RemoveMenuItem (UIObject Widget, string ItemToRemove)

Removes a single menu item from the context menu.

Parameters:

• Widget - the widget that invoked this context menu
• ItemToRemove - the string that should be removed from the context menu

Returns:

TRUE if the value was successfully removed or didn't exist in the first place.

RemoveMenuItemAtIndex

event bool RemoveMenuItemAtIndex (UIObject Widget, int IndexToRemove)

Removes the context menu item located at a specified position in the array.

Parameters:

• Widget - the widget that invoked this context menu
• IndexToRemove - the index of the item that should be removed.

Returns:

TRUE if the value was successfully removed; FALSE if IndexToRemove wasn't valid or the value couldn't be removed.

SetMenuItems

event bool SetMenuItems (UIObject Widget, array<string> NewMenuItems, optional bool bClearExisting, optional int InsertIndex)

Sets the text that will be displayed in the context menu items.

Parameters:

• Widget - the widget that invoked this context menu
• NewMenuItems - the menu items to use in the context menu
• bClearExisting - specify TRUE to clear any existing menu items; otherwise, the new items will be appended to the old
• InsertIndex - the location [in the list's items array] to insert the new menu items at; only relevant if bClearExisting is FALSE

Returns:

TRUE if the operation was successful.