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 )
void ensure_cursor_is_visible ( )
bool get_allow_reselect ( ) const
bool get_allow_rmb_select ( ) const
int get_column_at_position ( Vector2 position ) const
String get_column_title ( int column ) const
int get_column_width ( int column ) const
int get_columns ( ) const
Rect2 get_custom_popup_rect ( ) const
int get_drop_mode_flags ( ) 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
bool is_folding_hidden ( ) const
void set_allow_reselect ( bool allow )
void set_allow_rmb_select ( bool allow )
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 )
void set_columns ( int amount )
void set_drop_mode_flags ( int flags )
void set_hide_folding ( bool hide )
void set_hide_root ( bool enable )
void set_select_mode ( int mode )

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 ( )

Numeric Constants

  • 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.
  • DROP_MODE_DISABLED = 0
  • DROP_MODE_ON_ITEM = 1
  • DROP_MODE_INBETWEEN = 2

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.

  • bool get_allow_reselect ( ) const

Returns true if a cell that is currently already selected may be selected again.

  • bool get_allow_rmb_select ( ) const

Returns true if a right click can select items.

  • int get_column_at_position ( Vector2 position ) const

Returns the column index under the given point.

  • String get_column_title ( int column ) const

Returns the column’s title.

  • int get_column_width ( int column ) const

Returns the column’s width in pixels.

  • int get_columns ( ) const

Returns the amount of columns.

  • 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.

  • int get_drop_mode_flags ( ) const

Returns the current drop mode’s flags.

  • int get_drop_section_at_position ( Vector2 position ) 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.

Returns the tree’s root item.

Returns the current scrolling position.

Returns the currently selected item.

  • int get_selected_column ( ) const

Returns the current selection’s column.

  • bool is_folding_hidden ( ) const

Returns true if the folding arrow is hidden.

  • void set_allow_reselect ( bool allow )

If true the currently selected cell may be selected again.

  • void set_allow_rmb_select ( bool allow )

If true a right mouse button click can select items.

  • void set_column_expand ( int column, bool expand )

If true the column will have the “Expand” flag of Control.

  • void set_column_min_width ( int column, int min_width )

Set the minimum width of a column.

  • void set_column_title ( int column, String title )

Set the title of a column.

  • void set_column_titles_visible ( bool visible )

If true column titles are visible.

  • void set_columns ( int amount )

Set the amount of columns.

  • void set_drop_mode_flags ( int flags )

Set the drop mode as an OR combination of flags. See DROP_MODE\_\* constants.

  • void set_hide_folding ( bool hide )

If true the folding arrow is hidden.

  • void set_hide_root ( bool enable )

If true the tree’s root is hidden.

  • void set_select_mode ( int mode )

Allow single or multiple selection. See the SELECT\_\* constants.