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Diffstat (limited to 'doc/classes/EditorUndoRedoManager.xml')
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1 files changed, 130 insertions, 0 deletions
diff --git a/doc/classes/EditorUndoRedoManager.xml b/doc/classes/EditorUndoRedoManager.xml new file mode 100644 index 0000000000..133ee9db0d --- /dev/null +++ b/doc/classes/EditorUndoRedoManager.xml @@ -0,0 +1,130 @@ +<?xml version="1.0" encoding="UTF-8" ?> +<class name="EditorUndoRedoManager" inherits="RefCounted" version="4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd"> + <brief_description> + Manages undo history of scenes opened in the editor. + </brief_description> + <description> + [EditorUndoRedoManager] is a manager for [UndoRedo] objects associated with edited scenes. Each scene has its own undo history and [EditorUndoRedoManager] ensures that each action performed in the editor gets associated with a proper scene. For actions not related to scenes ([ProjectSettings] edits, external resources, etc.), a separate global history is used. + The usage is mostly the same as [UndoRedo]. You create and commit actions and the manager automatically decides under-the-hood what scenes it belongs to. The scene is deduced based on the first operation in an action, using the object from the operation. The rules are as follows: + - If the object is a [Node], use the currently edited scene; + - If the object is a built-in resource, use the scene from its path; + - If the object is external resource or anything else, use global history. + This guessing can sometimes yield false results, so you can provide a custom context object when creating an action. + </description> + <tutorials> + </tutorials> + <methods> + <method name="add_do_method" qualifiers="vararg"> + <return type="void" /> + <param index="0" name="object" type="Object" /> + <param index="1" name="method" type="StringName" /> + <description> + Register a method that will be called when the action is committed (i.e. the "do" action). + If this is the first operation, the [param object] will be used to deduce target undo history. + </description> + </method> + <method name="add_do_property"> + <return type="void" /> + <param index="0" name="object" type="Object" /> + <param index="1" name="property" type="StringName" /> + <param index="2" name="value" type="Variant" /> + <description> + Register a property value change for "do". + If this is the first operation, the [param object] will be used to deduce target undo history. + </description> + </method> + <method name="add_do_reference"> + <return type="void" /> + <param index="0" name="object" type="Object" /> + <description> + Register a reference for "do" 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="void" /> + <param index="0" name="object" type="Object" /> + <param index="1" name="method" type="StringName" /> + <description> + Register a method that will be called when the action is undone (i.e. the "undo" action). + If this is the first operation, the [param object] will be used to deduce target undo history. + </description> + </method> + <method name="add_undo_property"> + <return type="void" /> + <param index="0" name="object" type="Object" /> + <param index="1" name="property" type="StringName" /> + <param index="2" name="value" type="Variant" /> + <description> + Register a property value change for "undo". + If this is the first operation, the [param object] will be used to deduce target undo history. + </description> + </method> + <method name="add_undo_reference"> + <return type="void" /> + <param index="0" name="object" type="Object" /> + <description> + Register a reference for "undo" 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="commit_action"> + <return type="void" /> + <param index="0" name="execute" type="bool" default="true" /> + <description> + Commit the action. If [param execute] is true (default), all "do" methods/properties are called/set when this function is called. + </description> + </method> + <method name="create_action"> + <return type="void" /> + <param index="0" name="name" type="String" /> + <param index="1" name="merge_mode" type="int" enum="UndoRedo.MergeMode" default="0" /> + <param index="2" name="custom_context" type="Object" default="null" /> + <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], then commit the action with [method commit_action]. + The way actions are merged is dictated by the [param merge_mode] argument. See [enum UndoRedo.MergeMode] for details. + If [param custom_context] object is provided, it will be used for deducing target history (instead of using the first operation). + </description> + </method> + <method name="get_history_undo_redo" qualifiers="const"> + <return type="UndoRedo" /> + <param index="0" name="id" type="int" /> + <description> + Returns the [UndoRedo] object associated with the given history [param id]. + [param id] above [code]0[/code] are mapped to the opened scene tabs (but it doesn't match their order). [param id] of [code]0[/code] or lower have special meaning (see [enum SpecialHistory]). + Best used with [method get_object_history_id]. This method is only provided in case you need some more advanced methods of [UndoRedo] (but keep in mind that directly operating on the [UndoRedo] object might affect editor's stability). + </description> + </method> + <method name="get_object_history_id" qualifiers="const"> + <return type="int" /> + <param index="0" name="object" type="Object" /> + <description> + Returns the history ID deduced from the given [param object]. It can be used with [method get_history_undo_redo]. + </description> + </method> + <method name="is_committing_action" qualifiers="const"> + <return type="bool" /> + <description> + Returns [code]true[/code] if the [EditorUndoRedoManager] is currently committing the action, i.e. running its "do" method or property change (see [method commit_action]). + </description> + </method> + </methods> + <signals> + <signal name="history_changed"> + <description> + Emitted when the list of actions in any history has changed, either when an action is committed or a history is cleared. + </description> + </signal> + <signal name="version_changed"> + <description> + Emitted when the version of any history has changed as a result of undo or redo call. + </description> + </signal> + </signals> + <constants> + <constant name="GLOBAL_HISTORY" value="0" enum="SpecialHistory"> + Global history not associated with any scene, but with external resources etc. + </constant> + <constant name="INVALID_HISTORY" value="-99" enum="SpecialHistory"> + Invalid "null" history. It's a special value, not associated with any object. + </constant> + </constants> +</class> |