TreeItem
继承： Object
An internal control for a single item inside Tree.
描述
A single item of a Tree control. It can contain other TreeItem s as children, which allows it to create a hierarchy. It can also contain text and buttons. TreeItem is not a Node, it is internal to the Tree.
To create a TreeItem, use Tree.create_item or create_child. To remove a TreeItem, use Object.free.
Note: The ID values used for buttons are 32-bit, unlike int which is always 64-bit. They go from -2147483648 to 2147483647.
属性
方法
枚举
enum TreeCellMode:
TreeCellMode CELL_MODE_STRING = 0
Cell shows a string label, optionally with an icon. When editable, the text can be edited using a LineEdit, or a TextEdit popup if set_edit_multiline is used.
TreeCellMode CELL_MODE_CHECK = 1
Cell shows a checkbox, optionally with text and an icon. The checkbox can be pressed, released, or indeterminate (via set_indeterminate). The checkbox can't be clicked unless the cell is editable.
TreeCellMode CELL_MODE_RANGE = 2
Cell shows a numeric range. When editable, it can be edited using a range slider. Use set_range to set the value and set_range_config to configure the range.
This cell can also be used in a text dropdown mode when you assign a text with set_text. Separate options with a comma, e.g. "Option1,Option2,Option3".
TreeCellMode CELL_MODE_ICON = 3
Cell shows an icon. It can't be edited nor display text. The icon is always centered within the cell.
TreeCellMode CELL_MODE_CUSTOM = 4
Cell shows as a clickable button. It will display an arrow similar to OptionButton, but doesn't feature a dropdown (for that you can use CELL_MODE_RANGE). Clicking the button emits the Tree.item_edited signal. The button is flat by default, you can use set_custom_as_button to display it with a StyleBox.
This mode also supports custom drawing using set_custom_draw_callback.
属性说明
bool collapsed
If true, the TreeItem is collapsed.
int custom_minimum_height
The custom minimum height.
bool disable_folding
If true, folding is disabled for this TreeItem.
bool visible
If true, the TreeItem is visible (default).
Note that if a TreeItem is set to not be visible, none of its children will be visible either.
方法说明
void add_button ( column: int, button: Texture2D, id: int = -1, disabled: bool = false, tooltip_text: String = "" )
Adds a button with Texture2D button to the end of the cell at column column. The id is used to identify the button in the according Tree.button_clicked signal and can be different from the buttons index. If not specified, the next available index is used, which may be retrieved by calling get_button_count immediately before this method. Optionally, the button can be disabled and have a tooltip_text.
void add_child ( child: TreeItem )
Adds a previously unparented TreeItem as a direct child of this one. The child item must not be a part of any Tree or parented to any TreeItem. See also remove_child.
void call_recursive ( method: StringName, ... ) vararg1
Calls the method on the actual TreeItem and its children recursively. Pass parameters as a comma separated list.
void clear_custom_bg_color ( column: int )
Resets the background color for the given column to default.
void clear_custom_color ( column: int )
Resets the color for the given column to default.
TreeItem create_child ( index: int = -1 )
Creates an item and adds it as a child.
The new item will be inserted as position index (the default value -1 means the last position), or it will be the last child if index is higher than the child count.
void deselect ( column: int )
Deselects the given column.
void erase_button ( column: int, button_index: int )
Removes the button at index button_index in column column.
AutoTranslateMode get_auto_translate_mode ( column: int ) const2
Returns the column's auto translate mode.
AutowrapMode get_autowrap_mode ( column: int ) const2
Returns the text autowrap mode in the given column. By default it is TextServer.AUTOWRAP_OFF.
Texture2D get_button ( column: int, button_index: int ) const2
Returns the Texture2D of the button at index button_index in column column.
int get_button_by_id ( column: int, id: int ) const2
Returns the button index if there is a button with ID id in column column, otherwise returns -1.
Color get_button_color ( column: int, id: int ) const2
Returns the color of the button with ID id in column column. If the specified button does not exist, returns Color.BLACK.
int get_button_count ( column: int ) const2
Returns the number of buttons in column column.
int get_button_id ( column: int, button_index: int ) const2
Returns the ID for the button at index button_index in column column.
String get_button_tooltip_text ( column: int, button_index: int ) const2
Returns the tooltip text for the button at index button_index in column column.
TreeCellMode get_cell_mode ( column: int ) const2
Returns the column's cell mode.
TreeItem get_child ( index: int )
Returns a child item by its index (see get_child_count). This method is often used for iterating all children of an item.
Negative indices access the children from the last one.
int get_child_count ( )
Returns the number of child items.
Array TreeItem get_children ( )
Returns an array of references to the item's children.
Color get_custom_bg_color ( column: int ) const2
Returns the custom background color of column column.
Color get_custom_color ( column: int ) const2
Returns the custom color of column column.
Callable get_custom_draw_callback ( column: int ) const2
Returns the custom callback of column column.
Font get_custom_font ( column: int ) const2
Returns custom font used to draw text in the column column.
int get_custom_font_size ( column: int ) const2
Returns custom font size used to draw text in the column column.
bool get_expand_right ( column: int ) const2
Returns true if expand_right is set.
TreeItem get_first_child ( ) const2
Returns the TreeItem's first child.
Texture2D get_icon ( column: int ) const2
Returns the given column's icon Texture2D. Error if no icon is set.
int get_icon_max_width ( column: int ) const2
Returns the maximum allowed width of the icon in the given column.
Color get_icon_modulate ( column: int ) const2
Returns the Color modulating the column's icon.
Texture2D get_icon_overlay ( column: int ) const2
Returns the given column's icon overlay Texture2D.
Rect2 get_icon_region ( column: int ) const2
Returns the icon Texture2D region as Rect2.
int get_index ( )
Returns the node's order in the tree. For example, if called on the first child item the position is 0.
String get_language ( column: int ) const2
Returns item's text language code.
Variant get_metadata ( column: int ) const2
Returns the metadata value that was set for the given column using set_metadata.
Returns the next sibling TreeItem in the tree or a null object if there is none.
TreeItem get_next_in_tree ( wrap: bool = false )
Returns the next TreeItem in the tree (in the context of a depth-first search) or a null object if there is none.
If wrap is enabled, the method will wrap around to the first element in the tree when called on the last element, otherwise it returns null.
TreeItem get_next_visible ( wrap: bool = false )
Returns the next visible TreeItem in the tree (in the context of a depth-first search) or a null object if there is none.
If wrap is enabled, the method will wrap around to the first visible element in the tree when called on the last visible element, otherwise it returns null.
TreeItem get_parent ( ) const2
Returns the parent TreeItem or a null object if there is none.
TreeItem get_prev ( )
Returns the previous sibling TreeItem in the tree or a null object if there is none.
TreeItem get_prev_in_tree ( wrap: bool = false )
Returns the previous TreeItem in the tree (in the context of a depth-first search) or a null object if there is none.
If wrap is enabled, the method will wrap around to the last element in the tree when called on the first visible element, otherwise it returns null.
TreeItem get_prev_visible ( wrap: bool = false )
Returns the previous visible sibling TreeItem in the tree (in the context of a depth-first search) or a null object if there is none.
If wrap is enabled, the method will wrap around to the last visible element in the tree when called on the first visible element, otherwise it returns null.
float get_range ( column: int ) const2
Returns the value of a CELL_MODE_RANGE column.
Dictionary get_range_config ( column: int )
Returns a dictionary containing the range parameters for a given column. The keys are "min", "max", "step", and "expr".
StructuredTextParser get_structured_text_bidi_override ( column: int ) const2
Returns the BiDi algorithm override set for this cell.
Array get_structured_text_bidi_override_options ( column: int ) const2
Returns the additional BiDi options set for this cell.
String get_suffix ( column: int ) const2
Gets the suffix string shown after the column value.
String get_text ( column: int ) const2
Returns the given column's text.
HorizontalAlignment get_text_alignment ( column: int ) const2
Returns the given column's text alignment.
TextDirection get_text_direction ( column: int ) const2
Returns item's text base writing direction.
OverrunBehavior get_text_overrun_behavior ( column: int ) const2
Returns the clipping behavior when the text exceeds the item's bounding rectangle in the given column. By default it is TextServer.OVERRUN_TRIM_ELLIPSIS.
String get_tooltip_text ( column: int ) const2
Returns the given column's tooltip text.
Returns the Tree that owns this TreeItem.
bool is_any_collapsed ( only_visible: bool = false )
Returns true if this TreeItem, or any of its descendants, is collapsed.
If only_visible is true it ignores non-visible TreeItem s.
bool is_button_disabled ( column: int, button_index: int ) const2
Returns true if the button at index button_index for the given column is disabled.
bool is_checked ( column: int ) const2
Returns true if the given column is checked.
bool is_custom_set_as_button ( column: int ) const2
Returns true if the cell was made into a button with set_custom_as_button.
bool is_edit_multiline ( column: int ) const2
Returns true if the given column is multiline editable.
bool is_editable ( column: int )
Returns true if the given column is editable.
bool is_indeterminate ( column: int ) const2
Returns true if the given column is indeterminate.
bool is_selectable ( column: int ) const2
Returns true if the given column is selectable.
bool is_selected ( column: int )
Returns true if the given column is selected.
bool is_visible_in_tree ( ) const2
Returns true if visible is true and all its ancestors are also visible.
void move_after ( item: TreeItem )
Moves this TreeItem right after the given item.
Note: You can't move to the root or move the root.
void move_before ( item: TreeItem )
Moves this TreeItem right before the given item.
Note: You can't move to the root or move the root.
void propagate_check ( column: int, emit_signal: bool = true )
Propagates this item's checked status to its children and parents for the given column. It is possible to process the items affected by this method call by connecting to Tree.check_propagated_to_item. The order that the items affected will be processed is as follows: the item invoking this method, children of that item, and finally parents of that item. If emit_signal is false, then Tree.check_propagated_to_item will not be emitted.
void remove_child ( child: TreeItem )
Removes the given child TreeItem and all its children from the Tree. Note that it doesn't free the item from memory, so it can be reused later (see add_child). To completely remove a TreeItem use Object.free.
Note: If you want to move a child from one Tree to another, then instead of removing and adding it manually you can use move_before or move_after.
void select ( column: int )
Selects the given column.
void set_auto_translate_mode ( column: int, mode: AutoTranslateMode )
Sets the given column's auto translate mode to mode.
All columns use Node.AUTO_TRANSLATE_MODE_INHERIT by default, which uses the same auto translate mode as the Tree itself.
void set_autowrap_mode ( column: int, autowrap_mode: AutowrapMode )
Sets the autowrap mode in the given column. If set to something other than TextServer.AUTOWRAP_OFF, the text gets wrapped inside the cell's bounding rectangle.
void set_button ( column: int, button_index: int, button: Texture2D )
Sets the given column's button Texture2D at index button_index to button.
void set_button_color ( column: int, button_index: int, color: Color )
Sets the given column's button color at index button_index to color.
void set_button_disabled ( column: int, button_index: int, disabled: bool )
If true, disables the button at index button_index in the given column.
void set_button_tooltip_text ( column: int, button_index: int, tooltip: String )
Sets the tooltip text for the button at index button_index in the given column.
void set_cell_mode ( column: int, mode: TreeCellMode )
Sets the given column's cell mode to mode. This determines how the cell is displayed and edited. See TreeCellMode constants for details.
void set_checked ( column: int, checked: bool )
If checked is true, the given column is checked. Clears column's indeterminate status.
void set_collapsed_recursive ( enable: bool )
Collapses or uncollapses this TreeItem and all the descendants of this item.
void set_custom_as_button ( column: int, enable: bool )
Makes a cell with CELL_MODE_CUSTOM display as a non-flat button with a StyleBox.
void set_custom_bg_color ( column: int, color: Color, just_outline: bool = false )
Sets the given column's custom background color and whether to just use it as an outline.
void set_custom_color ( column: int, color: Color )
Sets the given column's custom color.
void set_custom_draw ( column: int, object: Object, callback: StringName )
已弃用： Use set_custom_draw_callback instead.
Sets the given column's custom draw callback to the callback method on object.
The method named callback should accept two arguments: the TreeItem that is drawn and its position and size as a Rect2.
void set_custom_draw_callback ( column: int, callback: Callable )
Sets the given column's custom draw callback. Use an empty Callable (Callable()) to clear the custom callback. The cell has to be in CELL_MODE_CUSTOM to use this feature.
The callback should accept two arguments: the TreeItem that is drawn and its position and size as a Rect2.
void set_custom_font ( column: int, font: Font )
Sets custom font used to draw text in the given column.
void set_custom_font_size ( column: int, font_size: int )
Sets custom font size used to draw text in the given column.
void set_edit_multiline ( column: int, multiline: bool )
If multiline is true, the given column is multiline editable.
Note: This option only affects the type of control (LineEdit or TextEdit) that appears when editing the column. You can set multiline values with set_text even if the column is not multiline editable.
void set_editable ( column: int, enabled: bool )
If enabled is true, the given column is editable.
void set_expand_right ( column: int, enable: bool )
If enable is true, the given column is expanded to the right.
void set_icon ( column: int, texture: Texture2D )
Sets the given cell's icon Texture2D. If the cell is in CELL_MODE_ICON mode, the icon is displayed in the center of the cell. Otherwise, the icon is displayed before the cell's text. CELL_MODE_RANGE does not display an icon.
void set_icon_max_width ( column: int, width: int )
Sets the maximum allowed width of the icon in the given column. This limit is applied on top of the default size of the icon and on top of Tree.icon_max_width. The height is adjusted according to the icon's ratio.
void set_icon_modulate ( column: int, modulate: Color )
Modulates the given column's icon with modulate.
void set_icon_overlay ( column: int, texture: Texture2D )
Sets the given cell's icon overlay Texture2D. The cell has to be in CELL_MODE_ICON mode, and icon has to be set. Overlay is drawn on top of icon, in the bottom left corner.
void set_icon_region ( column: int, region: Rect2 )
Sets the given column's icon's texture region.
void set_indeterminate ( column: int, indeterminate: bool )
If indeterminate is true, the given column is marked indeterminate.
Note: If set true from false, then column is cleared of checked status.
void set_language ( column: int, language: String )
Sets language code of item's text used for line-breaking and text shaping algorithms, if left empty current locale is used instead.
void set_metadata ( column: int, meta: Variant )
Sets the metadata value for the given column, which can be retrieved later using get_metadata. This can be used, for example, to store a reference to the original data.
void set_range ( column: int, value: float )
Sets the value of a CELL_MODE_RANGE column.
void set_range_config ( column: int, min: float, max: float, step: float, expr: bool = false )
Sets the range of accepted values for a column. The column must be in the CELL_MODE_RANGE mode.
If expr is true, the edit mode slider will use an exponential scale as with Range.exp_edit.
void set_selectable ( column: int, selectable: bool )
If selectable is true, the given column is selectable.
void set_structured_text_bidi_override ( column: int, parser: StructuredTextParser )
Set BiDi algorithm override for the structured text. Has effect for cells that display text.
void set_structured_text_bidi_override_options ( column: int, args: Array )
Set additional options for BiDi override. Has effect for cells that display text.
void set_suffix ( column: int, text: String )
Sets a string to be shown after a column's value (for example, a unit abbreviation).
void set_text ( column: int, text: String )
Sets the given column's text value.
void set_text_alignment ( column: int, text_alignment: HorizontalAlignment )
Sets the given column's text alignment. See HorizontalAlignment for possible values.
void set_text_direction ( column: int, direction: TextDirection )
Sets item's text base writing direction.
void set_text_overrun_behavior ( column: int, overrun_behavior: OverrunBehavior )
Sets the clipping behavior when the text exceeds the item's bounding rectangle in the given column.
void set_tooltip_text ( column: int, tooltip: String )
Sets the given column's tooltip text.
void uncollapse_tree ( )
Uncollapses all TreeItem s necessary to reveal this TreeItem, i.e. all ancestor TreeItem s.
本方法通常需要用户覆盖才能生效。
本方法无副作用，不会修改该实例的任何成员变量。
本方法除了能接受在此处描述的参数外，还能够继续接受任意数量的参数。
本方法用于构造某个类型。
调用本方法无需实例，可直接使用类名进行调用。
本方法描述的是使用本类型作为左操作数的有效运算符。
这个值是由下列位标志构成位掩码的整数。
无返回值。