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/*************************************************************************/
/* undo_redo.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifndef UNDO_REDO_H
#define UNDO_REDO_H
#include "object.h"
#include "resource.h"
class UndoRedo : public Object {
OBJ_TYPE(UndoRedo,Object);
OBJ_SAVE_TYPE( UndoRedo );
public:
enum MergeMode {
MERGE_DISABLE,
MERGE_ENDS,
MERGE_ALL
};
typedef void (*CommitNotifyCallback)(void *p_ud,const String& p_name);
Variant _add_do_method(const Variant** p_args, int p_argcount, Variant::CallError& r_error);
Variant _add_undo_method(const Variant** p_args, int p_argcount, Variant::CallError& r_error);
typedef void (*MethodNotifyCallback)(void *p_ud,Object*p_base,const StringName& p_name,VARIANT_ARG_DECLARE);
typedef void (*PropertyNotifyCallback)(void *p_ud,Object*p_base,const StringName& p_property,const Variant& p_value);
private:
struct Operation {
enum Type {
TYPE_METHOD,
TYPE_PROPERTY,
TYPE_REFERENCE
};
Type type;
Ref<Resource> resref;
ObjectID object;
String name;
Variant args[VARIANT_ARG_MAX];
};
struct Action {
String name;
List<Operation> do_ops;
List<Operation> undo_ops;
};
Vector<Action> actions;
int current_action;
int action_level;
int max_steps;
MergeMode merge_mode;
uint64_t version;
void _pop_history_tail();
void _process_operation_list(List<Operation>::Element *E);
void _discard_redo();
CommitNotifyCallback callback;
void* callback_ud;
void* method_callbck_ud;
void* prop_callback_ud;
MethodNotifyCallback method_callback;
PropertyNotifyCallback property_callback;
protected:
static void _bind_methods();
public:
void create_action(const String& p_name="",MergeMode p_mode=MERGE_DISABLE);
void add_do_method(Object *p_object,const String& p_method,VARIANT_ARG_LIST);
void add_undo_method(Object *p_object,const String& p_method,VARIANT_ARG_LIST);
void add_do_property(Object *p_object,const String& p_property,const Variant& p_value);
void add_undo_property(Object *p_object,const String& p_property,const Variant& p_value);
void add_do_reference(Object *p_object);
void add_undo_reference(Object *p_object);
void commit_action();
void redo();
void undo();
String get_current_action_name() const;
void clear_history();
void set_max_steps(int p_max_steps);
int get_max_steps() const;
uint64_t get_version() const;
void set_commit_notify_callback(CommitNotifyCallback p_callback,void* p_ud);
void set_method_notify_callback(MethodNotifyCallback p_method_callback,void* p_ud);
void set_property_notify_callback(PropertyNotifyCallback p_property_callback,void* p_ud);
UndoRedo();
~UndoRedo();
};
VARIANT_ENUM_CAST( UndoRedo::MergeMode );
#endif // UNDO_REDO_H
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