d95794ec8a
As many open source projects have started doing it, we're removing the current year from the copyright notice, so that we don't need to bump it every year. It seems like only the first year of publication is technically relevant for copyright notices, and even that seems to be something that many companies stopped listing altogether (in a version controlled codebase, the commits are a much better source of date of publication than a hardcoded copyright statement). We also now list Godot Engine contributors first as we're collectively the current maintainers of the project, and we clarify that the "exclusive" copyright of the co-founders covers the timespan before opensourcing (their further contributions are included as part of Godot Engine contributors). Also fixed "cf." Frenchism - it's meant as "refer to / see".
146 lines
5.1 KiB
C++
146 lines
5.1 KiB
C++
/**************************************************************************/
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/* undo_redo.h */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#ifndef UNDO_REDO_H
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#define UNDO_REDO_H
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#include "core/object/class_db.h"
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#include "core/object/ref_counted.h"
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class UndoRedo : public Object {
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GDCLASS(UndoRedo, Object);
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OBJ_SAVE_TYPE(UndoRedo);
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public:
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enum MergeMode {
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MERGE_DISABLE,
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MERGE_ENDS,
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MERGE_ALL
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};
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typedef void (*CommitNotifyCallback)(void *p_ud, const String &p_name);
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typedef void (*MethodNotifyCallback)(void *p_ud, Object *p_base, const StringName &p_name, const Variant **p_args, int p_argcount);
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typedef void (*PropertyNotifyCallback)(void *p_ud, Object *p_base, const StringName &p_property, const Variant &p_value);
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private:
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struct Operation {
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enum Type {
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TYPE_METHOD,
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TYPE_PROPERTY,
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TYPE_REFERENCE
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} type;
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bool force_keep_in_merge_ends;
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Ref<RefCounted> ref;
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ObjectID object;
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StringName name;
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Callable callable;
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Variant value;
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void delete_reference();
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};
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struct Action {
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String name;
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List<Operation> do_ops;
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List<Operation> undo_ops;
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uint64_t last_tick;
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};
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Vector<Action> actions;
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int current_action = -1;
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bool force_keep_in_merge_ends = false;
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int action_level = 0;
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MergeMode merge_mode = MERGE_DISABLE;
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bool merging = false;
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uint64_t version = 1;
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void _pop_history_tail();
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void _process_operation_list(List<Operation>::Element *E);
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void _discard_redo();
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bool _redo(bool p_execute);
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CommitNotifyCallback callback = nullptr;
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void *callback_ud = nullptr;
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void *method_callback_ud = nullptr;
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void *prop_callback_ud = nullptr;
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MethodNotifyCallback method_callback = nullptr;
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PropertyNotifyCallback property_callback = nullptr;
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int committing = 0;
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protected:
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static void _bind_methods();
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public:
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void create_action(const String &p_name = "", MergeMode p_mode = MERGE_DISABLE);
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void add_do_method(const Callable &p_callable);
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void add_undo_method(const Callable &p_callable);
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void add_do_property(Object *p_object, const StringName &p_property, const Variant &p_value);
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void add_undo_property(Object *p_object, const StringName &p_property, const Variant &p_value);
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void add_do_reference(Object *p_object);
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void add_undo_reference(Object *p_object);
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void start_force_keep_in_merge_ends();
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void end_force_keep_in_merge_ends();
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bool is_committing_action() const;
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void commit_action(bool p_execute = true);
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bool redo();
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bool undo();
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String get_current_action_name() const;
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int get_action_level() const;
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int get_history_count();
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int get_current_action();
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String get_action_name(int p_id);
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void clear_history(bool p_increase_version = true);
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bool has_undo() const;
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bool has_redo() const;
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uint64_t get_version() const;
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void set_commit_notify_callback(CommitNotifyCallback p_callback, void *p_ud);
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void set_method_notify_callback(MethodNotifyCallback p_method_callback, void *p_ud);
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void set_property_notify_callback(PropertyNotifyCallback p_property_callback, void *p_ud);
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UndoRedo() {}
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~UndoRedo();
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};
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VARIANT_ENUM_CAST(UndoRedo::MergeMode);
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#endif // UNDO_REDO_H
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