76 lines
2.0 KiB
GDScript3
76 lines
2.0 KiB
GDScript3
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@tool
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class_name ItemSelection extends HFlowContainer
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##
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## An item has been selected via GUI selection or [method select_item].
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##
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signal item_selected(index: int)
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var _button_group := ButtonGroup.new()
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##
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## Number of items in the selection.
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##
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var item_count: int:
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get:
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return _button_group.get_buttons().size()
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func _get_configuration_warnings() -> PackedStringArray:
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return PackedStringArray()
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##
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## Adds a new item with no text and only [code]icon[/code] as the icon to the selection.
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##
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func add_icon_item(icon: Texture2D) -> void:
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var child_count := get_child_count()
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var button := Button.new()
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button.icon = icon
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button.icon_alignment = HORIZONTAL_ALIGNMENT_CENTER
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button.toggle_mode = true
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button.button_group = _button_group
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button.button_pressed = child_count == 0
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button.pressed.connect(func () -> void: select_item(child_count))
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add_child(button)
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##
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## Returns the icon used by the item at [code]index[/code].
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##
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## An assertion is raised if [code]index[/code] is out of bounds from the item count.
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##
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func get_item_icon(index: int) -> Texture2D:
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var buttons := _button_group.get_buttons()
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assert(index < buttons.size(), "index out of range")
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var button := buttons[index] as Button
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return null if (button == null) else button.icon
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##
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## Returns the currently selected item index or [code]-1[/code] if no item is selected.
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##
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func get_selected_item() -> int:
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var pressed_button := _button_group.get_pressed_button()
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return -1 if (pressed_button == null) else pressed_button.get_index()
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##
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## Selects the item at [code]index[/code], emitting [signal item_selected] at the end.
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##
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## An assertion is raised if [code]index[/code] is out of bounds from the item count.
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##
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func select_item(index: int) -> void:
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var buttons := _button_group.get_buttons()
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assert(index < buttons.size(), "index out of range")
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var pressed_button := _button_group.get_pressed_button()
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if pressed_button != null:
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pressed_button.set_pressed_no_signal(false)
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buttons[index].set_pressed_no_signal(true)
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item_selected.emit(index)
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