<?xml version="1.0" encoding="UTF-8" ?>
<class name="UndoRedo" inherits="Object" category="Core" version="3.1">
	<brief_description>
		Helper to manage UndoRedo in the editor or custom tools.
	</brief_description>
	<description>
		Helper to manage UndoRedo in the editor or custom tools. It works by storing calls to functions in both 'do' an 'undo' lists.
		Common behavior is to create an action, then add do/undo calls to functions or property changes, then committing the action.
	</description>
	<tutorials>
	</tutorials>
	<demos>
	</demos>
	<methods>
		<method name="add_do_method" qualifiers="vararg">
			<return type="Variant">
			</return>
			<argument index="0" name="object" type="Object">
			</argument>
			<argument index="1" name="method" type="String">
			</argument>
			<description>
			</description>
		</method>
		<method name="add_do_property">
			<return type="void">
			</return>
			<argument index="0" name="object" type="Object">
			</argument>
			<argument index="1" name="property" type="String">
			</argument>
			<argument index="2" name="value" type="Variant">
			</argument>
			<description>
				Set a property with a custom value.
			</description>
		</method>
		<method name="add_do_reference">
			<return type="void">
			</return>
			<argument index="0" name="object" type="Object">
			</argument>
			<description>
				Add a 'do' reference that will be erased if the 'do' history is lost. This is useful mostly for new nodes created for the 'do' call. Do not use for resources.
			</description>
		</method>
		<method name="add_undo_method" qualifiers="vararg">
			<return type="Variant">
			</return>
			<argument index="0" name="object" type="Object">
			</argument>
			<argument index="1" name="method" type="String">
			</argument>
			<description>
			</description>
		</method>
		<method name="add_undo_property">
			<return type="void">
			</return>
			<argument index="0" name="object" type="Object">
			</argument>
			<argument index="1" name="property" type="String">
			</argument>
			<argument index="2" name="value" type="Variant">
			</argument>
			<description>
				Undo setting of a property with a custom value.
			</description>
		</method>
		<method name="add_undo_reference">
			<return type="void">
			</return>
			<argument index="0" name="object" type="Object">
			</argument>
			<description>
				Add an 'undo' reference that will be erased if the 'undo' history is lost. This is useful mostly for nodes removed with the 'do' call (not the 'undo' call!).
			</description>
		</method>
		<method name="clear_history">
			<return type="void">
			</return>
			<description>
				Clear the undo/redo history and associated references.
			</description>
		</method>
		<method name="commit_action">
			<return type="void">
			</return>
			<description>
				Commit the action. All 'do' methods/properties are called/set when this function is called.
			</description>
		</method>
		<method name="create_action">
			<return type="void">
			</return>
			<argument index="0" name="name" type="String">
			</argument>
			<argument index="1" name="merge_mode" type="int" enum="UndoRedo.MergeMode" default="0">
			</argument>
			<description>
				Create a new action. After this is called, do all your calls to [method add_do_method], [method add_undo_method], [method add_do_property] and [method add_undo_property].
			</description>
		</method>
		<method name="get_current_action_name" qualifiers="const">
			<return type="String">
			</return>
			<description>
				Get the name of the current action.
			</description>
		</method>
		<method name="get_version" qualifiers="const">
			<return type="int">
			</return>
			<description>
				Get the version, each time a new action is committed, the version number of the UndoRedo is increased automatically.
				This is useful mostly to check if something changed from a saved version.
			</description>
		</method>
		<method name="redo">
			<return type="void">
			</return>
			<description>
			</description>
		</method>
		<method name="undo">
			<return type="void">
			</return>
			<description>
			</description>
		</method>
	</methods>
	<constants>
		<constant name="MERGE_DISABLE" value="0" enum="MergeMode">
		</constant>
		<constant name="MERGE_ENDS" value="1" enum="MergeMode">
		</constant>
		<constant name="MERGE_ALL" value="2" enum="MergeMode">
		</constant>
	</constants>
</class>
