/* 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/>. */

/*************************************************************************************************
 * A function to return content widgets and some miscellaneous content widgets.
 *************************************************************************************************/
module mde.gui.widget.miscContent;

import mde.gui.widget.Widget;
import mde.gui.exception;
import mde.gui.widget.TextWidget;
import mde.gui.widget.layout;
import mde.gui.widget.PopupMenu;

import mde.gui.renderer.IRenderer;
import mde.content.AStringContent;
import mde.content.miscContent;
import Items = mde.content.Items;

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

/*************************************************************************************************
 * A function which uses Items.get (data.strings[0]) to get a content and creates a widget from
 * data.ints[1]. The first item in each ints and strings is removed before passing data to the new
 * widget.
 * 
 * The function only takes an IContent parameter to satisfy createWidget; it's value is ignored.
 ************************************************************************************************/
IChildWidget addContent (IWidgetManager mgr, IParentWidget parent, widgetID, WidgetData data, IContent) {
    if (data.strings.length != 2) throw new WidgetDataException;
    return mgr.makeWidget (parent, data.strings[1], Items.get (data.strings[0]));
}

/*************************************************************************************************
 * A function which returns the most appropriate content editing widget.
 *
 * Widgets which can be returned: BoolContentWidget (toggle button), ValueContentWidget (generic
 * text-box editor), DisplayContentWidget (generic text label).
 *************************************************************************************************/
IChildWidget editContent (IWidgetManager mgr, IParentWidget parent, widgetID id, WidgetData data, IContent c) {
    // Note: SAFE_RECURSION enabled
    if (c is null) throw new ContentException;
    if (cast(AStringContent) c) {
        if (cast(EnumContent) c)	// can be PopupMenuWidget or ContentListWidget
            return new ContentListWidget(mgr,parent,id,data,c);
        if (cast(BoolContent) c)
            return new BoolContentWidget(mgr,parent,id,data,c);
        return new AStringContentWidget(mgr,parent,id,data,c);
    }
    if (cast(IContentList) c)
        return new ContentListWidget(mgr,parent,id,data,c);
    if (cast(EventContent) c)
        return new ButtonContentWidget(mgr,parent,id,data,c);
    // generic uneditable option
    return new DisplayContentWidget(mgr,parent,id,data,c);
}

/// Editable boolean widget
class BoolContentWidget : AButtonWidget
{
    this (IWidgetManager mgr, IParentWidget parent, widgetID id, WidgetData, IContent c) {
	content = cast(BoolContent) c;
        if (content is null) throw new ContentException (this);
        super (mgr, parent, id);
        wdimPair s = mgr.renderer.getToggleSize;
        w = mw = s.x;
        h = mh = s.y;
    }
    
    override void draw () {
        mgr.renderer.drawToggle (x,y, content(), pushed);
    }
    
    override void activated () {
        content = !content();
    }
    
protected:
    BoolContent content;
}

/// A button connected to an EventContent
class ButtonContentWidget : AButtonWidget
{
    this (IWidgetManager mgr, IParentWidget parent, widgetID id, WidgetData, IContent c) {
	content = cast(EventContent) c;
        if (content is null) throw new ContentException (this);
        adapter = mgr.renderer.getAdapter ();
        super (mgr, parent, id);
    }
    
    override bool setup (uint n, uint flags) {
	if (!(flags & 3)) return false;	// string or renderer (and possibly font) changed
	adapter.text = content.toString(1);
	adapter.getDimensions (mw, mh);
	if (mw != w || mh != h) {
	    w = mw;
	    h = mh;
	}
	return true;
    }
    
    override void draw () {
	super.draw();
	adapter.draw (x,y);
    }
    
    override void activated () {
	content.endEvent;
    }
    
protected:
    IRenderer.TextAdapter adapter;
    EventContent content;
    int index;
}