unreal.ListView
¶
- class unreal.ListView(outer: Optional[Object] = None, name: Union[Name, str] = 'None')¶
Bases:
ListViewBase
A virtualized list that allows up to thousands of items to be displayed.
An important distinction to keep in mind here is “Item” vs. “Entry” The list itself is based on a list of n items, but only creates as many entry widgets as can fit on screen. For example, a scrolling ListView of 200 items with 5 currently visible will only have created 5 entry widgets.
To make a widget usable as an entry in a ListView, it must inherit from the IUserObjectListEntry interface.
C++ Source:
Module: UMG
File: ListView.h
Editor Properties: (see get_editor_property/set_editor_property)
accessible_behavior
(SlateAccessibleBehavior): [Read-Write] Accessible Behavior: Whether or not the widget is accessible, and how to describe it. If set to custom, additional customization options will appear.accessible_summary_behavior
(SlateAccessibleBehavior): [Read-Write] Accessible Summary Behavior: How to describe this widget when it’s being presented through a summary of a parent widget. If set to custom, additional customization options will appear.accessible_summary_text
(Text): [Read-Write] Accessible Summary Text: When AccessibleSummaryBehavior is set to Custom, this is the text that will be used to describe the widget.accessible_text
(Text): [Read-Write] Accessible Text: When AccessibleBehavior is set to Custom, this is the text that will be used to describe the widget.allow_dragging
(bool): [Read-Write] Allow Dragging: True to allow dragging of row widgets in the listallow_overscroll
(bool): [Read-Write] Allow Overscroll: Disable to stop scrollbars from activating inertial overscrollingbp_on_entry_generated
(OnListEntryGeneratedDynamic): [Read-Write] BP on Entry Generated: Called when a row widget is generated for a list itembp_on_entry_initialized
(OnListEntryInitializedDynamic): [Read-Write] BP on Entry Initialized: Called when a row widget is generated for a list itembp_on_entry_released
(OnListEntryReleasedDynamic): [Read-Write] BP on Entry Released: Called when a row widget is released by the list (i.e. when it no longer represents a list item)bp_on_item_clicked
(SimpleListItemEventDynamic): [Read-Write] BP on Item Clickedbp_on_item_double_clicked
(SimpleListItemEventDynamic): [Read-Write] BP on Item Double Clickedbp_on_item_is_hovered_changed
(OnItemIsHoveredChangedDynamic): [Read-Write] BP on Item Is Hovered Changedbp_on_item_scrolled_into_view
(OnListItemScrolledIntoViewDynamic): [Read-Write] BP on Item Scrolled Into Viewbp_on_item_selection_changed
(OnListItemSelectionChangedDynamic): [Read-Write] BP on Item Selection Changedcan_children_be_accessible
(bool): [Read-Write] Can Children be Accessible: Whether or not children of this widget can appear as distinct accessible widgets.clear_selection_on_click
(bool): [Read-Write] Clear Selection on Clickclipping
(WidgetClipping): [Read-Write] Clippingconsume_mouse_wheel
(ConsumeMouseWheel): [Read-Write] Consume Mouse Wheelcursor
(MouseCursor): [Read-Write] Cursorenable_fixed_line_offset
(bool): [Read-Write] Enable Fixed Line Offsetenable_right_click_scrolling
(bool): [Read-Write] Enable Right Click Scrolling: True to allow right click drag scrolling.enable_scroll_animation
(bool): [Read-Write] Enable Scroll Animation: True to enable lerped animation when scrolling through the listentry_spacing
(float): [Read-Write] Entry Spacingentry_widget_class
(type(Class)): [Read-Write] Entry Widget Class: The type of widget to create for each entry displayed in the list.fixed_line_scroll_offset
(float): [Read-Write] Fixed Line Scroll Offset: Optional fixed offset (in lines) to always apply to the top/left (depending on orientation) of the list. If provided, all non-inertial means of scrolling will settle with exactly this offset of the topmost entry. Ex: A value of 0.25 would cause the topmost full entry to be offset down by a quarter length of the preceeding entry.flow_direction_preference
(FlowDirectionPreference): [Read-Write] Flow Direction Preferenceis_enabled
(bool): [Read-Write] Is Enabledis_focusable
(bool): [Read-Write] Is Focusableis_volatile
(bool): [Read-Write] Is Volatile: If true prevents the widget or its child’s geometry or layout information from being cached. If this widget changes every frame, but you want it to still be in an invalidation panel you should make it as volatile instead of invalidating it every frame, which would prevent the invalidation panel from actually ever caching anything.navigation
(WidgetNavigation): [Read-Write] Navigation: The navigation object for this widget is optionally created if the user has configured custom navigation rules for this widget in the widget designer. Those rules determine how navigation transitions can occur between widgets.num_designer_preview_entries
(int32): [Read-Write] Num Designer Preview Entries: The number of dummy item entry widgets to preview in the widget designerorientation
(Orientation): [Read-Write] Orientation: The scroll & layout orientation of the list. ListView and TileView only. Vertical will scroll vertically and arrange tiles into rows. Horizontal will scroll horizontally and arrange tiles into columns.override_accessible_defaults
(bool): [Read-Write] Override Accessible Defaults: Override all of the default accessibility behavior and text for this widget.override_cursor
(bool): [Read-Write] Override Cursorrender_opacity
(float): [Read-Write] Render Opacityrender_transform
(WidgetTransform): [Read-Write] Render Transformrender_transform_pivot
(Vector2D): [Read-Write] Render Transform Pivotreturn_focus_to_selection
(bool): [Read-Write] Return Focus to Selectionscroll_bar_style
(ScrollBarStyle): [Read-Write] Scroll Bar Styleselection_mode
(SelectionMode): [Read-Write] Selection Modeslot
(PanelSlot): [Read-Write] Slot: The parent slot of the UWidget. Allows us to easily inline edit the layout controlling this widget.tool_tip_text
(Text): [Read-Write] Tool Tip Texttool_tip_widget
(Widget): [Read-Only] Tool Tip Widgetvisibility
(SlateVisibility): [Read-Write] Visibilitywheel_scroll_multiplier
(float): [Read-Write] Wheel Scroll Multiplier: The multiplier to apply when wheel scrollingwidget_style
(TableViewStyle): [Read-Write] Widget Style
- bp_get_num_items_selected() int32 ¶
Gets the number of items currently selected in the list
- Return type:
int32
- bp_get_selected_item() Object ¶
Gets the first selected item, if any; recommended that you only use this for single selection lists.
- Return type:
- bp_get_selected_items() Array[Object] or None ¶
Gets a list of all the currently selected items
- bp_is_item_visible(item) bool ¶
Gets whether the entry for the given object is currently visible in the list
Requests that the given item is navigated to, scrolling it into view if needed.
- Parameters:
item (Object) –
- property bp_on_entry_initialized: OnListEntryInitializedDynamic¶
[Read-Write] BP on Entry Initialized: Called when a row widget is generated for a list item
- Type:
- property bp_on_item_clicked: SimpleListItemEventDynamic¶
[Read-Write] BP on Item Clicked
- Type:
- property bp_on_item_double_clicked: SimpleListItemEventDynamic¶
[Read-Write] BP on Item Double Clicked
- Type:
- property bp_on_item_is_hovered_changed: OnItemIsHoveredChangedDynamic¶
[Read-Write] BP on Item Is Hovered Changed
- Type:
- property bp_on_item_scrolled_into_view: OnListItemScrolledIntoViewDynamic¶
[Read-Write] BP on Item Scrolled Into View
- property bp_on_item_selection_changed: OnListItemSelectionChangedDynamic¶
[Read-Write] BP on Item Selection Changed
- bp_scroll_item_into_view(item) None ¶
Requests that the given item is scrolled into view
- Parameters:
item (Object) –
- bp_set_selected_item(item) None ¶
Sets the given item as the sole selected item.
- Parameters:
item (Object) –
- property consume_mouse_wheel: ConsumeMouseWheel¶
[Read-Only] Consume Mouse Wheel
- Type:
- get_index_for_item(item) int32 ¶
Returns the index that the specified item is at. Will return the first found, or -1 for not found
- Parameters:
item (Object) –
- Return type:
int32
- get_item_at(index) Object ¶
Returns the item at the given index
- Parameters:
index (int32) –
- Return type:
- get_list_items() Array[Object] ¶
Gets the list of all items in the list. Note that each of these items only has a corresponding entry widget when visible. Use GetDisplayedEntryWidgets to get the currently displayed widgets.
- get_num_items() int32 ¶
Returns the total number of items
- Return type:
int32
- is_refresh_pending() bool ¶
Returns true if a refresh is pending and the list will be rebuilt on the next tick
- Return type:
Requests that the item at the given index navigated to, scrolling it into view if needed.
- Parameters:
index (int32) –
- property orientation: Orientation¶
[Read-Only] Orientation: The scroll & layout orientation of the list. ListView and TileView only. Vertical will scroll vertically and arrange tiles into rows. Horizontal will scroll horizontally and arrange tiles into columns.
- Type:
- property scroll_bar_style: ScrollBarStyle¶
[Read-Only] Scroll Bar Style
- Type:
- scroll_index_into_view(index) None ¶
Requests that the item at the given index is scrolled into view
- Parameters:
index (int32) –
- property selection_mode: SelectionMode¶
[Read-Only] Selection Mode
- Type:
- set_selected_index(index) None ¶
Sets the item at the given index as the sole selected item.
- Parameters:
index (int32) –
- set_selection_mode(selection_mode) None ¶
Sets the new selection mode, preserving the current selection where possible.
- Parameters:
selection_mode (SelectionMode) –
- property widget_style: TableViewStyle¶
[Read-Only] Widget Style
- Type: