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virtualx-engine/doc/classes/TreeItem.xml
Markus Sauermann 06f0184b63 Fix confusion about TreeItem.add_button ambiguity between id and index 
A TreeItem button has an id and an index, which can be distinct.
This leads to confusion.

This PR documents the distinction between id and index.
2022-12-29 00:43:45 +01:00

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<?xml version="1.0" encoding="UTF-8" ?>
<class name="TreeItem" inherits="Object" version="4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
<brief_description>
Control for a single item inside a [Tree].
</brief_description>
<description>
Control for a single item inside a [Tree]. May have child [TreeItem]s and be styled as well as contain buttons.
You can remove a [TreeItem] by using [method Object.free].
</description>
<tutorials>
</tutorials>
<methods>
<method name="add_button">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="button" type="Texture2D" />
<param index="2" name="id" type="int" default="-1" />
<param index="3" name="disabled" type="bool" default="false" />
<param index="4" name="tooltip_text" type="String" default="&quot;&quot;" />
<description>
Adds a button with [Texture2D] [param button] at column [param column]. The [param id] is used to identify the button in the according [signal 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 [method get_button_count] immediately before this method. Optionally, the button can be [param disabled] and have a [param tooltip_text].
</description>
</method>
<method name="call_recursive" qualifiers="vararg">
<return type="void" />
<param index="0" name="method" type="StringName" />
<description>
Calls the [param method] on the actual TreeItem and its children recursively. Pass parameters as a comma separated list.
</description>
</method>
<method name="clear_custom_bg_color">
<return type="void" />
<param index="0" name="column" type="int" />
<description>
Resets the background color for the given column to default.
</description>
</method>
<method name="clear_custom_color">
<return type="void" />
<param index="0" name="column" type="int" />
<description>
Resets the color for the given column to default.
</description>
</method>
<method name="create_child">
<return type="TreeItem" />
<param index="0" name="index" type="int" default="-1" />
<description>
Creates an item and adds it as a child.
The new item will be inserted as position [param index] (the default value [code]-1[/code] means the last position), or it will be the last child if [param index] is higher than the child count.
</description>
</method>
<method name="deselect">
<return type="void" />
<param index="0" name="column" type="int" />
<description>
Deselects the given column.
</description>
</method>
<method name="erase_button">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="button_index" type="int" />
<description>
Removes the button at index [param button_index] in column [param column].
</description>
</method>
<method name="get_button" qualifiers="const">
<return type="Texture2D" />
<param index="0" name="column" type="int" />
<param index="1" name="button_index" type="int" />
<description>
Returns the [Texture2D] of the button at index [param button_index] in column [param column].
</description>
</method>
<method name="get_button_by_id" qualifiers="const">
<return type="int" />
<param index="0" name="column" type="int" />
<param index="1" name="id" type="int" />
<description>
Returns the button index if there is a button with ID [param id] in column [param column], otherwise returns -1.
</description>
</method>
<method name="get_button_count" qualifiers="const">
<return type="int" />
<param index="0" name="column" type="int" />
<description>
Returns the number of buttons in column [param column].
</description>
</method>
<method name="get_button_id" qualifiers="const">
<return type="int" />
<param index="0" name="column" type="int" />
<param index="1" name="button_index" type="int" />
<description>
Returns the ID for the button at index [param button_index] in column [param column].
</description>
</method>
<method name="get_button_tooltip_text" qualifiers="const">
<return type="String" />
<param index="0" name="column" type="int" />
<param index="1" name="button_index" type="int" />
<description>
Returns the tooltip text for the button at index [param button_index] in column [param column].
</description>
</method>
<method name="get_cell_mode" qualifiers="const">
<return type="int" enum="TreeItem.TreeCellMode" />
<param index="0" name="column" type="int" />
<description>
Returns the column's cell mode.
</description>
</method>
<method name="get_child">
<return type="TreeItem" />
<param index="0" name="index" type="int" />
<description>
Returns a child item by its [param index] (see [method get_child_count]). This method is often used for iterating all children of an item.
Negative indices access the children from the last one.
</description>
</method>
<method name="get_child_count">
<return type="int" />
<description>
Returns the number of child items.
</description>
</method>
<method name="get_children">
<return type="TreeItem[]" />
<description>
Returns an array of references to the item's children.
</description>
</method>
<method name="get_custom_bg_color" qualifiers="const">
<return type="Color" />
<param index="0" name="column" type="int" />
<description>
Returns the custom background color of column [param column].
</description>
</method>
<method name="get_custom_color" qualifiers="const">
<return type="Color" />
<param index="0" name="column" type="int" />
<description>
Returns the custom color of column [param column].
</description>
</method>
<method name="get_custom_font" qualifiers="const">
<return type="Font" />
<param index="0" name="column" type="int" />
<description>
Returns custom font used to draw text in the column [param column].
</description>
</method>
<method name="get_custom_font_size" qualifiers="const">
<return type="int" />
<param index="0" name="column" type="int" />
<description>
Returns custom font size used to draw text in the column [param column].
</description>
</method>
<method name="get_expand_right" qualifiers="const">
<return type="bool" />
<param index="0" name="column" type="int" />
<description>
Returns [code]true[/code] if [code]expand_right[/code] is set.
</description>
</method>
<method name="get_first_child" qualifiers="const">
<return type="TreeItem" />
<description>
Returns the TreeItem's first child.
</description>
</method>
<method name="get_icon" qualifiers="const">
<return type="Texture2D" />
<param index="0" name="column" type="int" />
<description>
Returns the given column's icon [Texture2D]. Error if no icon is set.
</description>
</method>
<method name="get_icon_max_width" qualifiers="const">
<return type="int" />
<param index="0" name="column" type="int" />
<description>
Returns the column's icon's maximum width.
</description>
</method>
<method name="get_icon_modulate" qualifiers="const">
<return type="Color" />
<param index="0" name="column" type="int" />
<description>
Returns the [Color] modulating the column's icon.
</description>
</method>
<method name="get_icon_region" qualifiers="const">
<return type="Rect2" />
<param index="0" name="column" type="int" />
<description>
Returns the icon [Texture2D] region as [Rect2].
</description>
</method>
<method name="get_index">
<return type="int" />
<description>
Returns the node's order in the tree. For example, if called on the first child item the position is [code]0[/code].
</description>
</method>
<method name="get_language" qualifiers="const">
<return type="String" />
<param index="0" name="column" type="int" />
<description>
Returns item's text language code.
</description>
</method>
<method name="get_metadata" qualifiers="const">
<return type="Variant" />
<param index="0" name="column" type="int" />
<description>
Returns the metadata value that was set for the given column using [method set_metadata].
</description>
</method>
<method name="get_next" qualifiers="const">
<return type="TreeItem" />
<description>
Returns the next sibling TreeItem in the tree or a null object if there is none.
</description>
</method>
<method name="get_next_visible">
<return type="TreeItem" />
<param index="0" name="wrap" type="bool" default="false" />
<description>
Returns the next visible sibling TreeItem in the tree or a null object if there is none.
If [param 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 [code]null[/code].
</description>
</method>
<method name="get_parent" qualifiers="const">
<return type="TreeItem" />
<description>
Returns the parent TreeItem or a null object if there is none.
</description>
</method>
<method name="get_prev">
<return type="TreeItem" />
<description>
Returns the previous sibling TreeItem in the tree or a null object if there is none.
</description>
</method>
<method name="get_prev_visible">
<return type="TreeItem" />
<param index="0" name="wrap" type="bool" default="false" />
<description>
Returns the previous visible sibling TreeItem in the tree or a null object if there is none.
If [param 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 [code]null[/code].
</description>
</method>
<method name="get_range" qualifiers="const">
<return type="float" />
<param index="0" name="column" type="int" />
<description>
Returns the value of a [constant CELL_MODE_RANGE] column.
</description>
</method>
<method name="get_range_config">
<return type="Dictionary" />
<param index="0" name="column" type="int" />
<description>
Returns a dictionary containing the range parameters for a given column. The keys are "min", "max", "step", and "expr".
</description>
</method>
<method name="get_structured_text_bidi_override" qualifiers="const">
<return type="int" enum="TextServer.StructuredTextParser" />
<param index="0" name="column" type="int" />
<description>
</description>
</method>
<method name="get_structured_text_bidi_override_options" qualifiers="const">
<return type="Array" />
<param index="0" name="column" type="int" />
<description>
</description>
</method>
<method name="get_suffix" qualifiers="const">
<return type="String" />
<param index="0" name="column" type="int" />
<description>
Gets the suffix string shown after the column value.
</description>
</method>
<method name="get_text" qualifiers="const">
<return type="String" />
<param index="0" name="column" type="int" />
<description>
Returns the given column's text.
</description>
</method>
<method name="get_text_alignment" qualifiers="const">
<return type="int" enum="HorizontalAlignment" />
<param index="0" name="column" type="int" />
<description>
Returns the given column's text alignment.
</description>
</method>
<method name="get_text_direction" qualifiers="const">
<return type="int" enum="Control.TextDirection" />
<param index="0" name="column" type="int" />
<description>
Returns item's text base writing direction.
</description>
</method>
<method name="get_tooltip_text" qualifiers="const">
<return type="String" />
<param index="0" name="column" type="int" />
<description>
Returns the given column's tooltip text.
</description>
</method>
<method name="get_tree" qualifiers="const">
<return type="Tree" />
<description>
Returns the [Tree] that owns this TreeItem.
</description>
</method>
<method name="is_any_collapsed">
<return type="bool" />
<param index="0" name="only_visible" type="bool" default="false" />
<description>
Returns [code]true[/code] if this [TreeItem], or any of its descendants, is collapsed.
If [param only_visible] is [code]true[/code] it ignores non-visible [TreeItem]s.
</description>
</method>
<method name="is_button_disabled" qualifiers="const">
<return type="bool" />
<param index="0" name="column" type="int" />
<param index="1" name="button_index" type="int" />
<description>
Returns [code]true[/code] if the button at index [param button_index] for the given [param column] is disabled.
</description>
</method>
<method name="is_checked" qualifiers="const">
<return type="bool" />
<param index="0" name="column" type="int" />
<description>
Returns [code]true[/code] if the given [param column] is checked.
</description>
</method>
<method name="is_custom_set_as_button" qualifiers="const">
<return type="bool" />
<param index="0" name="column" type="int" />
<description>
</description>
</method>
<method name="is_editable">
<return type="bool" />
<param index="0" name="column" type="int" />
<description>
Returns [code]true[/code] if the given [param column] is editable.
</description>
</method>
<method name="is_indeterminate" qualifiers="const">
<return type="bool" />
<param index="0" name="column" type="int" />
<description>
Returns [code]true[/code] if the given [param column] is indeterminate.
</description>
</method>
<method name="is_selectable" qualifiers="const">
<return type="bool" />
<param index="0" name="column" type="int" />
<description>
Returns [code]true[/code] if the given [param column] is selectable.
</description>
</method>
<method name="is_selected">
<return type="bool" />
<param index="0" name="column" type="int" />
<description>
Returns [code]true[/code] if the given [param column] is selected.
</description>
</method>
<method name="move_after">
<return type="void" />
<param index="0" name="item" type="TreeItem" />
<description>
Moves this TreeItem right after the given [param item].
[b]Note:[/b] You can't move to the root or move the root.
</description>
</method>
<method name="move_before">
<return type="void" />
<param index="0" name="item" type="TreeItem" />
<description>
Moves this TreeItem right before the given [param item].
[b]Note:[/b] You can't move to the root or move the root.
</description>
</method>
<method name="propagate_check">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="emit_signal" type="bool" default="true" />
<description>
Propagates this item's checked status to its children and parents for the given [param column]. It is possible to process the items affected by this method call by connecting to [signal 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 [param emit_signal] is [code]false[/code], then [signal Tree.check_propagated_to_item] will not be emitted.
</description>
</method>
<method name="remove_child">
<return type="void" />
<param index="0" name="child" type="TreeItem" />
<description>
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. To completely remove a [TreeItem] use [method Object.free].
</description>
</method>
<method name="select">
<return type="void" />
<param index="0" name="column" type="int" />
<description>
Selects the given [param column].
</description>
</method>
<method name="set_button">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="button_index" type="int" />
<param index="2" name="button" type="Texture2D" />
<description>
Sets the given column's button [Texture2D] at index [param button_index] to [param button].
</description>
</method>
<method name="set_button_color">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="button_index" type="int" />
<param index="2" name="color" type="Color" />
<description>
Sets the given column's button color at index [param button_index] to [param color].
</description>
</method>
<method name="set_button_disabled">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="button_index" type="int" />
<param index="2" name="disabled" type="bool" />
<description>
If [code]true[/code], disables the button at index [param button_index] in the given [param column].
</description>
</method>
<method name="set_cell_mode">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="mode" type="int" enum="TreeItem.TreeCellMode" />
<description>
Sets the given column's cell mode to [param mode]. See [enum TreeCellMode] constants.
</description>
</method>
<method name="set_checked">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="checked" type="bool" />
<description>
If [code]true[/code], the given [param column] is checked. Clears column's indeterminate status.
</description>
</method>
<method name="set_collapsed_recursive">
<return type="void" />
<param index="0" name="enable" type="bool" />
<description>
Collapses or uncollapses this [TreeItem] and all the descendants of this item.
</description>
</method>
<method name="set_custom_as_button">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="enable" type="bool" />
<description>
</description>
</method>
<method name="set_custom_bg_color">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="color" type="Color" />
<param index="2" name="just_outline" type="bool" default="false" />
<description>
Sets the given column's custom background color and whether to just use it as an outline.
</description>
</method>
<method name="set_custom_color">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="color" type="Color" />
<description>
Sets the given column's custom color.
</description>
</method>
<method name="set_custom_draw">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="object" type="Object" />
<param index="2" name="callback" type="StringName" />
<description>
Sets the given column's custom draw callback to [param callback] method on [param object].
The [param callback] should accept two arguments: the [TreeItem] that is drawn and its position and size as a [Rect2].
</description>
</method>
<method name="set_custom_font">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="font" type="Font" />
<description>
Sets custom font used to draw text in the given [param column].
</description>
</method>
<method name="set_custom_font_size">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="font_size" type="int" />
<description>
Sets custom font size used to draw text in the given [param column].
</description>
</method>
<method name="set_editable">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="enabled" type="bool" />
<description>
If [code]true[/code], the given [param column] is editable.
</description>
</method>
<method name="set_expand_right">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="enable" type="bool" />
<description>
If [code]true[/code], the given [param column] is expanded to the right.
</description>
</method>
<method name="set_icon">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="texture" type="Texture2D" />
<description>
Sets the given column's icon [Texture2D].
</description>
</method>
<method name="set_icon_max_width">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="width" type="int" />
<description>
Sets the given column's icon's maximum width.
</description>
</method>
<method name="set_icon_modulate">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="modulate" type="Color" />
<description>
Modulates the given column's icon with [param modulate].
</description>
</method>
<method name="set_icon_region">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="region" type="Rect2" />
<description>
Sets the given column's icon's texture region.
</description>
</method>
<method name="set_indeterminate">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="indeterminate" type="bool" />
<description>
If [code]true[/code], the given [param column] is marked [param indeterminate].
[b]Note:[/b] If set [code]true[/code] from [code]false[/code], then column is cleared of checked status.
</description>
</method>
<method name="set_language">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="language" type="String" />
<description>
Sets language code of item's text used for line-breaking and text shaping algorithms, if left empty current locale is used instead.
</description>
</method>
<method name="set_metadata">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="meta" type="Variant" />
<description>
Sets the metadata value for the given column, which can be retrieved later using [method get_metadata]. This can be used, for example, to store a reference to the original data.
</description>
</method>
<method name="set_range">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="value" type="float" />
<description>
Sets the value of a [constant CELL_MODE_RANGE] column.
</description>
</method>
<method name="set_range_config">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="min" type="float" />
<param index="2" name="max" type="float" />
<param index="3" name="step" type="float" />
<param index="4" name="expr" type="bool" default="false" />
<description>
Sets the range of accepted values for a column. The column must be in the [constant CELL_MODE_RANGE] mode.
If [param expr] is [code]true[/code], the edit mode slider will use an exponential scale as with [member Range.exp_edit].
</description>
</method>
<method name="set_selectable">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="selectable" type="bool" />
<description>
If [code]true[/code], the given column is selectable.
</description>
</method>
<method name="set_structured_text_bidi_override">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="parser" type="int" enum="TextServer.StructuredTextParser" />
<description>
</description>
</method>
<method name="set_structured_text_bidi_override_options">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="args" type="Array" />
<description>
</description>
</method>
<method name="set_suffix">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="text" type="String" />
<description>
Sets a string to be shown after a column's value (for example, a unit abbreviation).
</description>
</method>
<method name="set_text">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="text" type="String" />
<description>
Sets the given column's text value.
</description>
</method>
<method name="set_text_alignment">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="text_alignment" type="int" enum="HorizontalAlignment" />
<description>
Sets the given column's text alignment. See [enum HorizontalAlignment] for possible values.
</description>
</method>
<method name="set_text_direction">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="direction" type="int" enum="Control.TextDirection" />
<description>
Sets item's text base writing direction.
</description>
</method>
<method name="set_tooltip_text">
<return type="void" />
<param index="0" name="column" type="int" />
<param index="1" name="tooltip" type="String" />
<description>
Sets the given column's tooltip text.
</description>
</method>
<method name="uncollapse_tree">
<return type="void" />
<description>
</description>
</method>
</methods>
<members>
<member name="collapsed" type="bool" setter="set_collapsed" getter="is_collapsed">
If [code]true[/code], the TreeItem is collapsed.
</member>
<member name="custom_minimum_height" type="int" setter="set_custom_minimum_height" getter="get_custom_minimum_height">
The custom minimum height.
</member>
<member name="disable_folding" type="bool" setter="set_disable_folding" getter="is_folding_disabled">
If [code]true[/code], folding is disabled for this TreeItem.
</member>
<member name="visible" type="bool" setter="set_visible" getter="is_visible">
If [code]true[/code], the [TreeItem] is visible (default).
Note that if a [TreeItem] is set to not be visible, none of its children will be visible either.
</member>
</members>
<constants>
<constant name="CELL_MODE_STRING" value="0" enum="TreeCellMode">
Cell contains a string.
</constant>
<constant name="CELL_MODE_CHECK" value="1" enum="TreeCellMode">
Cell contains a checkbox.
</constant>
<constant name="CELL_MODE_RANGE" value="2" enum="TreeCellMode">
Cell contains a range.
</constant>
<constant name="CELL_MODE_ICON" value="3" enum="TreeCellMode">
Cell contains an icon.
</constant>
<constant name="CELL_MODE_CUSTOM" value="4" enum="TreeCellMode">
</constant>
</constants>
</class>
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