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/*
Copyright (C) 2000 Stefan Westerfeld
[email protected]
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "aggregation.h"
#include <iostream>
using namespace std;
using namespace Arts;
class String_impl : virtual public String_skel {
string _value;
public:
void constructor(const std::string& value) { _value = value; }
string value() { return _value; }
void value(const std::string& newValue) { _value = newValue; }
};
REGISTER_IMPLEMENTATION(String_impl);
void printall(Arts::Object o, std::string pre = "")
{
String s;
s = DynamicCast(o);
if(!s.isNull())
cout << pre << " - " << s.value() << endl;
vector<string> *children = s._queryChildren();
vector<string>::iterator i;
for(i = children->begin(); i != children->end(); i++)
printall(s._getChild(*i), pre+" ");
}
/*
* Small test case for aggregation
*
* The idea behind all this is that you can add children to objects, building
* a tree (or if you like graph) of objects without the objects knowing anything
* about this. Aggregation has strong references, that means, the objects you
* add together in a tree will stay this way, as long as you keep a reference
* to the root.
*/
int main()
{
Dispatcher d;
String s("spreadsheet");
s._addChild(String("chart"),"child1");
s._addChild(String("image"),"child2");
printall(s);
cout << "deleting \"child1\"" << endl;
if(!s._removeChild("child1")) cout << "FAIL" << endl;
printall(s);
}
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