/* LICENSE BLOCK
Part of mde: a Modular D game-oriented Engine
Copyright © 2007-2008 Diggory Hardy

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, see <http://www.gnu.org/licenses/>. */

/******************************************************************************
 * The content system − a few content classes.
 *****************************************************************************/
module mde.content.miscContent;

public import mde.content.Content;

    import tango.util.log.Log : Log, Logger;
    private Logger logger;
    static this () {
        logger = Log.getLogger ("mde.content.miscContent");
    }

/** A generic way to handle a list of type IContent. */
class ContentList : Content, IContentList
{
    this (char[] symbol, Content[] list = null) {
	list_ = list;
	super (symbol);
    }
    this (char[] symbol, Content[char[]] l) {
	list_.length = l.length;
	size_t i;
	foreach (c; l)
	    list_[i++] = c;
	super (symbol);
    }
    
    override Content[] list () {
	return list_;
    }
    
    ContentList append (Content x) {
        size_t l = list_.length;
        list_.length = l + 1;
        list_[l] = x;
        return this;
    }
    ContentList append (Content[] x) {
        list_ ~= x;
        return this;
    }
    
protected:
    final Content[] list_;
}

/** Created on errors to display and log a message. */
class ErrorContent : Content
{
    this (char[] name, char[] msg) {
	super (name);
        this.msg = msg;
        logger.error (name ~ ": " ~ msg);
    }
    
    override char[] toString (uint i) {
	return i == 0 ? msg
	     : i == 1 ? name_
	     : null;
    }
    
protected:
    char[] msg;
}

/** A Content with no value but able to pass on an event.
*
* The point being that a button can be tied to one of these. */
class EventContent : Content {
    this (char[] symbol) {
        super (symbol);
    }
}