Tree¶
Inherits: Control < CanvasItem < Node < Object
Category: Core
Brief Description¶
Control to show a tree of items.
Member Functions¶
bool | are_column_titles_visible ( ) const |
void | clear ( ) |
Object | create_item ( Object parent=null, int idx=-1 ) |
void | ensure_cursor_is_visible ( ) |
int | get_column_at_position ( Vector2 position ) const |
String | get_column_title ( int column ) const |
int | get_column_width ( int column ) const |
Rect2 | get_custom_popup_rect ( ) const |
int | get_drop_section_at_position ( Vector2 position ) const |
TreeItem | get_edited ( ) const |
int | get_edited_column ( ) const |
Rect2 | get_item_area_rect ( Object item, int column=-1 ) const |
TreeItem | get_item_at_position ( Vector2 position ) const |
TreeItem | get_next_selected ( Object from ) |
int | get_pressed_button ( ) const |
TreeItem | get_root ( ) |
Vector2 | get_scroll ( ) const |
TreeItem | get_selected ( ) const |
int | get_selected_column ( ) const |
void | set_column_expand ( int column, bool expand ) |
void | set_column_min_width ( int column, int min_width ) |
void | set_column_title ( int column, String title ) |
void | set_column_titles_visible ( bool visible ) |
Signals¶
Emitted when a button on the tree was pressed (see TreeItem.add_button).
- cell_selected ( )
Emitted when a cell is selected.
- column_title_pressed ( int column )
Emitted when a column’s title is pressed.
- custom_popup_edited ( bool arrow_clicked )
Emitted when a cell with the CELL_MODE_CUSTOM
is clicked to be edited.
- empty_tree_rmb_selected ( Vector2 position )
Emitted when the right mouse button is pressed if RMB selection is active and the tree is empty.
- item_activated ( )
Emitted when an item is activated (double-clicked).
- item_collapsed ( Object item )
Emitted when an item is collapsed by a click on the folding arrow.
- item_custom_button_pressed ( )
- item_double_clicked ( )
Emitted when an item is double clicked.
- item_edited ( )
Emitted when an item is edited.
- item_rmb_edited ( )
Emitted when an item is edited using the right mouse button.
- item_rmb_selected ( Vector2 position )
Emitted when an item is selected with right mouse button.
- item_selected ( )
Emitted when an item is selected with right mouse button.
Emitted instead of item_selected
when select_mode
is SELECT_MULTI
.
- nothing_selected ( )
Member Variables¶
- bool allow_reselect - If
true
the currently selected cell may be selected again. - bool allow_rmb_select - If
true
a right mouse button click can select items. - int columns - The amount of columns.
- int drop_mode_flags - The drop mode as an OR combination of flags. See
DROP_MODE_*
constants. - bool hide_folding - If
true
the folding arrow is hidden. - bool hide_root - If
true
the tree’s root is hidden. - SelectMode select_mode - Allow single or multiple selection. See the
SELECT_*
constants.
Enums¶
enum DropModeFlags
- DROP_MODE_DISABLED = 0
- DROP_MODE_ON_ITEM = 1
- DROP_MODE_INBETWEEN = 2
enum SelectMode
- SELECT_SINGLE = 0 — Allow selection of a single item at a time.
- SELECT_ROW = 1
- SELECT_MULTI = 2 — Allow selection of multiple items at the same time.
Description¶
This shows a tree of items that can be selected, expanded and collapsed. The tree can have multiple columns with custom controls like text editing, buttons and popups. It can be useful for structured displays and interactions.
Trees are built via code, using TreeItem objects to create the structure. They have a single root but multiple roots can be simulated if a dummy hidden root is added.
func _ready():
var tree = Tree.new()
var root = tree.create_item()
tree.set_hide_root(true)
var child1 = tree.create_item(root)
var child2 = tree.create_item(root)
var subchild1 = tree.create_item(child1)
subchild1.set_text(0, "Subchild1")
Member Function Description¶
- bool are_column_titles_visible ( ) const
Returns true
if the column titles are being shown.
- void clear ( )
Clears the tree. This removes all items.
Create an item in the tree and add it as the last child of parent
. If parent is not given, it will be added as the root’s last child, or it’ll the be the root itself if the tree is empty.
- void ensure_cursor_is_visible ( )
Makes the currently selected item visible. This will scroll the tree to make sure the selected item is visible.
Returns the column index under the given point.
Returns the column’s title.
Returns the column’s width in pixels.
- Rect2 get_custom_popup_rect ( ) const
Returns the rectangle for custom popups. Helper to create custom cell controls that display a popup. See TreeItem.set_cell_mode.
- TreeItem get_edited ( ) const
Returns the currently edited item. This is only available for custom cell mode.
- int get_edited_column ( ) const
Returns the column for the currently edited item. This is only available for custom cell mode.
Returns the rectangle area for the specified item. If column is specified, only get the position and size of that column, otherwise get the rectangle containing all columns.
Returns the tree item at the specified position (relative to the tree origin position).
Returns the next selected item after the given one.
- int get_pressed_button ( ) const
Returns the last pressed button’s index.
- TreeItem get_root ( )
Returns the tree’s root item.
- Vector2 get_scroll ( ) const
Returns the current scrolling position.
- TreeItem get_selected ( ) const
Returns the currently selected item.
- int get_selected_column ( ) const
Returns the current selection’s column.
If true
the column will have the “Expand” flag of Control.
Set the minimum width of a column.
Set the title of a column.
- void set_column_titles_visible ( bool visible )
If true
column titles are visible.