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//
// C++ Interface: undo_redo
//
// Description:
//
//
// Author: Juan Linietsky <reduzio@gmail.com>, (C) 2008
//
// Copyright: See COPYING file that comes with this distribution
//
//
#ifndef UNDO_REDO_H
#define UNDO_REDO_H
#include "list.h"
#include "rstring.h"
#include "vector.h"
//#include "simple_type.h"
/**
@author Juan Linietsky <reduzio@gmail.com>
*/
class UndoRedo {
public:
typedef void (*ActionCallback)(const String &, void *);
protected:
struct CommandDataBase {
virtual ~CommandDataBase() {}
};
template <class T>
struct CommandData : public CommandDataBase {
T *data;
~CommandData() { delete data; }
CommandData(T *p_data) { data = p_data; }
};
struct CommandBase {
List<CommandDataBase *> command_data;
public:
template <class T>
CommandBase *with_data(T *p_data) {
command_data.push_back(new CommandData<T>(p_data));
return this;
}
virtual void call() = 0;
virtual ~CommandBase() {}
};
template <class T>
struct Command0 : public CommandBase {
typedef void (T::*Method)();
T *instance;
Method method;
virtual void call() {
(instance->*method)();
}
Command0(T *p_instance, Method p_method) {
instance = p_instance;
method = p_method;
}
};
template <class T, class P1>
struct Command1 : public CommandBase {
typedef void (T::*Method)(P1);
T *instance;
Method method;
P1 p1;
virtual void call() {
(instance->*method)(p1);
}
Command1(T *p_instance, Method p_method, P1 p_p1) {
instance = p_instance;
method = p_method;
p1 = p_p1;
}
};
/**/
template <class T, class P1, class P2>
struct Command2 : public CommandBase {
typedef void (T::*Method)(P1, P2);
T *instance;
Method method;
P1 p1;
P2 p2;
virtual void call() {
(instance->*method)(p1, p2);
}
Command2(T *p_instance, Method p_method, P1 p_p1, P2 p_p2) {
instance = p_instance;
method = p_method;
p1 = p_p1;
p2 = p_p2;
}
};
/**/
template <class T, class P1, class P2, class P3>
struct Command3 : public CommandBase {
typedef void (T::*Method)(P1, P2, P3);
T *instance;
Method method;
P1 p1;
P2 p2;
P3 p3;
virtual void call() {
(instance->*method)(p1, p2, p3);
}
Command3(T *p_instance, Method p_method, P1 p_p1, P2 p_p2, P3 p_p3) {
instance = p_instance;
method = p_method;
p1 = p_p1;
p2 = p_p2;
p3 = p_p3;
}
};
/**/
template <class T, class P1, class P2, class P3, class P4>
struct Command4 : public CommandBase {
typedef void (T::*Method)(P1, P2, P3, P4);
T *instance;
Method method;
P1 p1;
P2 p2;
P3 p3;
P4 p4;
virtual void call() {
(instance->*method)(p1, p2, p3, p4);
}
Command4(T *p_instance, Method p_method, P1 p_p1, P2 p_p2, P3 p_p3, P4 p_p4) {
instance = p_instance;
method = p_method;
p1 = p_p1;
p2 = p_p2;
p3 = p_p3;
p4 = p_p4;
}
};
/**/
template <class T, class P1, class P2, class P3, class P4, class P5>
struct Command5 : public CommandBase {
typedef void (T::*Method)(P1, P2, P3, P4, P5);
T *instance;
Method method;
P1 p1;
P2 p2;
P3 p3;
P4 p4;
P5 p5;
virtual void call() {
(instance->*method)(p1, p2, p3, p4, p5);
}
Command5(T *p_instance, Method p_method, P1 p_p1, P2 p_p2, P3 p_p3, P4 p_p4, P5 p_p5) {
instance = p_instance;
method = p_method;
p1 = p_p1;
p2 = p_p2;
p3 = p_p3;
p4 = p_p4;
p5 = p_p5;
}
};
/* methods */
template <class T, class M, class P1>
Command1<T, P1> *command(T *p_instance, M p_method, P1 p1) {
return new Command1<T, P1>(p_instance, p_method, p1);
}
template <class T, class M, class P1, class P2>
Command2<T, P1, P2> *command(T *p_instance, M p_method, P1 p1, P2 p2) {
return new Command2<T, P1, P2>(p_instance, p_method, p1, p2);
}
template <class T, class M, class P1, class P2, class P3>
Command3<T, P1, P2, P3> *command(T *p_instance, M p_method, P1 p1, P2 p2, P3 p3) {
return new Command3<T, P1, P2, P3>(p_instance, p_method, p1, p2, p3);
}
template <class T, class M, class P1, class P2, class P3, class P4>
Command4<T, P1, P2, P3, P4> *command(T *p_instance, M p_method, P1 p1, P2 p2, P3 p3, P4 p4) {
return new Command4<T, P1, P2, P3, P4>(p_instance, p_method, p1, p2, p3, p4);
}
template <class T, class M, class P1, class P2, class P3, class P4, class P5>
Command5<T, P1, P2, P3, P4, P5> *command(T *p_instance, M p_method, P1 p1, P2 p2, P3 p3, P4 p4, P5 p5) {
return new Command5<T, P1, P2, P3, P4, P5>(p_instance, p_method, p1, p2, p3, p4, p5);
}
/*****/
class Data {
public:
virtual void free() = 0;
virtual ~Data() {}
};
template <class T>
class DataPtr : public Data {
T *ptr;
public:
virtual void free() { delete ptr; }
DataPtr(T *p_ptr) { ptr = p_ptr; }
~DataPtr() {}
};
private:
struct Group {
List<CommandBase *> do_method_list;
List<CommandBase *> undo_method_list;
List<Data *> do_data;
List<Data *> undo_data;
String name;
bool merge_forward;
bool merge_backward;
};
void _delete_group(Group *p_group, bool p_do, bool p_undo);
Vector<Group *> group_list;
int current_group;
int group_rc;
ActionCallback action_callback;
void *action_callback_userdata;
public:
void begin_action(String p_name, bool p_mergeable = false);
template <class T, class M>
void do_method(T *p_instance, M p_method) {
group_list[current_group]->do_method_list.push_back(new Command0<T>(p_instance, p_method));
}
template <class T, class M, class P1>
void do_method(T *p_instance, M p_method, P1 p1) {
group_list[current_group]->do_method_list.push_back(new Command1<T, P1>(p_instance, p_method, p1));
}
template <class T, class M, class P1, class P2>
void do_method(T *p_instance, M p_method, P1 p1, P2 p2) {
group_list[current_group]->do_method_list.push_back(new Command2<T, P1, P2>(p_instance, p_method, p1, p2));
}
template <class T, class M, class P1, class P2, class P3>
void do_method(T *p_instance, M p_method, P1 p1, P2 p2, P3 p3) {
group_list[current_group]->do_method_list.push_back(new Command3<T, P1, P2, P3>(p_instance, p_method, p1, p2, p3));
}
template <class T, class M, class P1, class P2, class P3, class P4>
void do_method(T *p_instance, M p_method, P1 p1, P2 p2, P3 p3, P4 p4) {
group_list[current_group]->do_method_list.push_back(new Command4<T, P1, P2, P3, P4>(p_instance, p_method, p1, p2, p3, p4));
}
template <class T, class M>
void undo_method(T *p_instance, M p_method) {
group_list[current_group]->undo_method_list.push_back(new Command0<T>(p_instance, p_method));
}
template <class T, class M, class P1>
void undo_method(T *p_instance, M p_method, P1 p1) {
group_list[current_group]->undo_method_list.push_back(new Command1<T, P1>(p_instance, p_method, p1));
}
template <class T, class M, class P1, class P2>
void undo_method(T *p_instance, M p_method, P1 p1, P2 p2) {
group_list[current_group]->undo_method_list.push_back(new Command2<T, P1, P2>(p_instance, p_method, p1, p2));
}
template <class T, class M, class P1, class P2, class P3>
void undo_method(T *p_instance, M p_method, P1 p1, P2 p2, P3 p3) {
group_list[current_group]->undo_method_list.push_back(new Command3<T, P1, P2, P3>(p_instance, p_method, p1, p2, p3));
}
template <class T, class M, class P1, class P2, class P3, class P4>
void undo_method(T *p_instance, M p_method, P1 p1, P2 p2, P3 p3, P4 p4) {
group_list[current_group]->undo_method_list.push_back(new Command4<T, P1, P2, P3, P4>(p_instance, p_method, p1, p2, p3, p4));
}
template <class T>
void do_data(T *p_data) {
group_list[current_group]->do_data.push_back(new DataPtr<T>(p_data));
}
template <class T>
void undo_data(T *p_data) {
group_list[current_group]->undo_data.push_back(new DataPtr<T>(p_data));
}
void commit_action();
void undo();
void redo();
void clean();
int get_current_version();
void set_action_callback(ActionCallback p_action_callback, void *p_action_callback_userdata);
UndoRedo();
~UndoRedo();
};
#endif
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