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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#ifndef TITANIC_LIST_H
#define TITANIC_LIST_H
#include "common/scummsys.h"
#include "common/list.h"
#include "titanic/support/simple_file.h"
#include "titanic/core/saveable_object.h"
namespace Titanic {
/**
* Base list item class
*/
class ListItem: public CSaveableObject {
public:
CLASSDEF
/**
* Save the data for the class to file
*/
virtual void save(SimpleFile *file, int indent) const;
/**
* Load the data for the class from file
*/
virtual void load(SimpleFile *file);
};
/**
* List item macro for managed pointers an item
*/
#define PTR_LIST_ITEM(T) class T##ListItem : public ListItem { \
public: T *_item; \
T##ListItem() : _item(nullptr) {} \
T##ListItem(T *item) : _item(item) {} \
virtual ~T##ListItem() { delete _item; } \
}
template<typename T>
class PtrListItem : public ListItem {
public:
T *_item;
public:
PtrListItem() : _item(nullptr) {}
PtrListItem(T *item) : _item(item) {}
virtual ~PtrListItem() { delete _item; }
};
template<typename T>
class List : public CSaveableObject, public Common::List<T *> {
public:
virtual ~List() { destroyContents(); }
/**
* Save the data for the class to file
*/
virtual void save(SimpleFile *file, int indent) const {
file->writeNumberLine(0, indent);
// Write out number of items
file->writeQuotedLine("L", indent);
file->writeNumberLine(Common::List<T *>::size(), indent);
// Iterate through writing entries
typename Common::List<T *>::const_iterator i;
for (i = Common::List<T *>::begin(); i != Common::List<T *>::end(); ++i) {
const ListItem *item = *i;
item->saveHeader(file, indent);
item->save(file, indent + 1);
item->saveFooter(file, indent);
}
}
/**
* Load the data for the class from file
*/
virtual void load(SimpleFile *file) {
file->readNumber();
file->readBuffer();
Common::List<T *>::clear();
uint count = file->readNumber();
for (uint idx = 0; idx < count; ++idx) {
// Validate the class start header
if (!file->IsClassStart())
error("Unexpected class end");
// Get item's class name and use it to instantiate an item
CString className = file->readString();
T *newItem = dynamic_cast<T *>(CSaveableObject::createInstance(className));
if (!newItem)
error("Could not create instance of %s", className.c_str());
// Load the item's data and add it to the list
newItem->load(file);
Common::List<T *>::push_back(newItem);
// Validate the class end footer
if (file->IsClassStart())
error("Unexpected class start");
}
}
/**
* Clear the list and destroy any items in it
*/
void destroyContents() {
typename Common::List<T *>::iterator i;
for (i = Common::List<T *>::begin();
i != Common::List<T *>::end(); ++i) {
CSaveableObject *obj = *i;
delete obj;
}
Common::List<T *>::clear();
}
/**
* Add a new item to the list of the type the list contains
*/
T *add() {
T *item = new T();
Common::List<T *>::push_back(item);
return item;
}
bool contains(const T *item) const {
for (typename Common::List<T *>::const_iterator i = Common::List<T *>::begin();
i != Common::List<T *>::end(); ++i) {
if (*i == item)
return true;
}
return false;
}
};
} // End of namespace Titanic
#endif /* TITANIC_LIST_H */
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