diff options
Diffstat (limited to 'doc/classes/UndoRedo.xml')
| -rw-r--r-- | doc/classes/UndoRedo.xml | 156 |
1 files changed, 88 insertions, 68 deletions
diff --git a/doc/classes/UndoRedo.xml b/doc/classes/UndoRedo.xml index 2cc3e974e2..def6fe5d1f 100644 --- a/doc/classes/UndoRedo.xml +++ b/doc/classes/UndoRedo.xml @@ -7,7 +7,8 @@ Helper to manage undo/redo operations in the editor or custom tools. It works by registering methods and property changes inside "actions". Common behavior is to create an action, then add do/undo calls to functions or property changes, then committing the action. Here's an example on how to add an action to the Godot editor's own [UndoRedo], from a plugin: - [codeblock] + [codeblocks] + [gdscript] var undo_redo = get_undo_redo() # Method of EditorPlugin. func do_something(): @@ -24,7 +25,37 @@ undo_redo.add_do_property(node, "position", Vector2(100,100)) undo_redo.add_undo_property(node, "position", node.position) undo_redo.commit_action() - [/codeblock] + [/gdscript] + [csharp] + public UndoRedo UndoRedo; + + public override void _Ready() + { + UndoRedo = GetUndoRedo(); // Method of EditorPlugin. + } + + public void DoSomething() + { + // Put your code here. + } + + public void UndoSomething() + { + // Put here the code that reverts what's done by "DoSomething()". + } + + private void OnMyButtonPressed() + { + var node = GetNode<Node2D>("MyNode2D"); + UndoRedo.CreateAction("Move the node"); + UndoRedo.AddDoMethod(this, nameof(DoSomething)); + UndoRedo.AddUndoMethod(this, nameof(UndoSomething)); + UndoRedo.AddDoProperty(node, "position", new Vector2(100, 100)); + UndoRedo.AddUndoProperty(node, "position", node.Position); + UndoRedo.CommitAction(); + } + [/csharp] + [/codeblocks] [method create_action], [method add_do_method], [method add_undo_method], [method add_do_property], [method add_undo_property], and [method commit_action] should be called one after the other, like in the example. Not doing so could lead to crashes. If you don't need to register a method, you can leave [method add_do_method] and [method add_undo_method] out; the same goes for properties. You can also register more than one method/property. </description> @@ -32,146 +63,135 @@ </tutorials> <methods> <method name="add_do_method" qualifiers="vararg"> - <return type="void"> - </return> - <argument index="0" name="object" type="Object"> - </argument> - <argument index="1" name="method" type="StringName"> - </argument> + <return type="void" /> + <argument index="0" name="object" type="Object" /> + <argument index="1" name="method" type="StringName" /> <description> Register a method that will be called when the action is committed. </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="StringName"> - </argument> - <argument index="2" name="value" type="Variant"> - </argument> + <return type="void" /> + <argument index="0" name="object" type="Object" /> + <argument index="1" name="property" type="StringName" /> + <argument index="2" name="value" type="Variant" /> <description> Register a property value change for "do". </description> </method> <method name="add_do_reference"> - <return type="void"> - </return> - <argument index="0" name="object" type="Object"> - </argument> + <return type="void" /> + <argument 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"> - </return> - <argument index="0" name="object" type="Object"> - </argument> - <argument index="1" name="method" type="StringName"> - </argument> + <return type="void" /> + <argument index="0" name="object" type="Object" /> + <argument index="1" name="method" type="StringName" /> <description> Register a method that will be called when the action is undone. </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="StringName"> - </argument> - <argument index="2" name="value" type="Variant"> - </argument> + <return type="void" /> + <argument index="0" name="object" type="Object" /> + <argument index="1" name="property" type="StringName" /> + <argument index="2" name="value" type="Variant" /> <description> Register a property value change for "undo". </description> </method> <method name="add_undo_reference"> - <return type="void"> - </return> - <argument index="0" name="object" type="Object"> - </argument> + <return type="void" /> + <argument 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="clear_history"> - <return type="void"> - </return> - <argument index="0" name="increase_version" type="bool" default="true"> - </argument> + <return type="void" /> + <argument index="0" name="increase_version" type="bool" default="true" /> <description> Clear the undo/redo history and associated references. Passing [code]false[/code] to [code]increase_version[/code] will prevent the version number to be increased from this. </description> </method> <method name="commit_action"> - <return type="void"> - </return> + <return type="void" /> + <argument index="0" name="execute" type="bool" default="true" /> <description> - Commit the action. All "do" methods/properties are called/set when this function is called. + Commit the action. If [code]execute[/code] is true (default), 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> + <return type="void" /> + <argument index="0" name="name" type="String" /> + <argument index="1" name="merge_mode" type="int" enum="UndoRedo.MergeMode" default="0" /> <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 [code]merge_mode[/code] argument. See [enum MergeMode] for details. </description> </method> + <method name="get_action_name"> + <return type="String" /> + <argument index="0" name="id" type="int" /> + <description> + Gets the action name from its index. + </description> + </method> + <method name="get_current_action"> + <return type="int" /> + <description> + Gets the index of the current action. + </description> + </method> <method name="get_current_action_name" qualifiers="const"> - <return type="String"> - </return> + <return type="String" /> + <description> + Gets the name of the current action, equivalent to [code]get_action_name(get_current_action())[/code]. + </description> + </method> + <method name="get_history_count"> + <return type="int" /> <description> - Gets the name of the current action. + Return how many elements are in the history. </description> </method> <method name="get_version" qualifiers="const"> - <return type="int"> - </return> + <return type="int" /> <description> Gets the version. Every time a new action is committed, the [UndoRedo]'s version number is increased automatically. This is useful mostly to check if something changed from a saved version. </description> </method> - <method name="has_redo"> - <return type="bool"> - </return> + <method name="has_redo" qualifiers="const"> + <return type="bool" /> <description> Returns [code]true[/code] if a "redo" action is available. </description> </method> - <method name="has_undo"> - <return type="bool"> - </return> + <method name="has_undo" qualifiers="const"> + <return type="bool" /> <description> Returns [code]true[/code] if an "undo" action is available. </description> </method> <method name="is_committing_action" qualifiers="const"> - <return type="bool"> - </return> + <return type="bool" /> <description> Returns [code]true[/code] if the [UndoRedo] is currently committing the action, i.e. running its "do" method or property change (see [method commit_action]). </description> </method> <method name="redo"> - <return type="bool"> - </return> + <return type="bool" /> <description> Redo the last action. </description> </method> <method name="undo"> - <return type="bool"> - </return> + <return type="bool" /> <description> Undo the last action. </description> |