/* === S Y N F I G ========================================================= */
/*!	\file widget_canvaschooser.cpp
**	\brief Template File
**
**	$Id$
**
**	\legal
**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**	Copyright (c) 2007 Chris Moore
**
**	This package 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 package 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.
**	\endlegal
*/
/* ========================================================================= */

/* === H E A D E R S ======================================================= */

#ifdef USING_PCH
#	include "pch.h"
#else
#ifdef HAVE_CONFIG_H
#	include <config.h>
#endif

#include "widgets/widget_canvaschooser.h"
#include <gtkmm/menu.h>
#include "app.h"

#include "general.h"

#endif

/* === U S I N G =========================================================== */

using namespace std;
using namespace etl;
using namespace synfig;
using namespace studio;

/* === M A C R O S ========================================================= */

/* === G L O B A L S ======================================================= */

/* === P R O C E D U R E S ================================================= */

/* === M E T H O D S ======================================================= */

Widget_CanvasChooser::Widget_CanvasChooser():
	canvas_menu(NULL)
{ }

Widget_CanvasChooser::~Widget_CanvasChooser()
{ }

void
Widget_CanvasChooser::set_parent_canvas(synfig::Canvas::Handle x)
{
	assert(x);
	parent_canvas=x;
}

void
Widget_CanvasChooser::set_value_(synfig::Canvas::Handle data)
{
	set_value(data);
	activate();
}

void
Widget_CanvasChooser::on_changed()
{
	int i = get_active_row_number();
	if (i < 0 || i > (int)canvases.size()) return;

	// Check "Other..." item at the end
	if (i == (int)canvases.size()) { chooser_menu(); return; }

	if (canvas != canvases[i]) set_value_(canvases[i]);
}

void
Widget_CanvasChooser::set_value(synfig::Canvas::Handle data)
{
	assert(parent_canvas);
	canvas=data;

	synfig::Canvas::Children::iterator iter;
	synfig::Canvas::Children &children(parent_canvas->children());
	String label;

	set_active(-1);
	remove_all();
	canvases.clear();

	if(canvas)
	{
		label=canvas->get_name().empty()?canvas->get_id():canvas->get_name();
		canvases.push_back(canvas);
		append(label);
	}

	for(iter=children.begin();iter!=children.end();iter++)
		if(*iter!=canvas)
		{
			label=(*iter)->get_name().empty()?(*iter)->get_id():(*iter)->get_name();
			canvases.push_back(*iter);
			append(label);
		}

	append(_("Other..."));

	if(canvas)
		set_active(0);
}

const etl::handle<synfig::Canvas> &
Widget_CanvasChooser::get_value()
{
	return canvas;
}

void
Widget_CanvasChooser::chooser_menu()
{
	String canvas_name;

	if (!App::dialog_entry(_("Choose canvas"),
			_("Canvas Name: "),
			canvas_name,
			_("Cancel"),
			_("Choose"))
	)
	{
		// the user hit 'cancel', so set the parameter back to its previous value
		set_value_(canvas);
		return;
	}

	if (canvas_name == "")
	{
		App::dialog_message_1b(
				"ERROR",
				_("No canvas name was specified"),
				"details",
				_("Close"));

		set_value_(canvas);
		return;
	}

	Canvas::Handle new_canvas;
	try
	{
		String warnings;
		new_canvas=parent_canvas->find_canvas(canvas_name, warnings);
		set_value_(new_canvas);
	}
	catch(std::runtime_error x)
	{
		App::dialog_message_1b(
				"ERROR",
				String(_("(Exception Thrown) Error selecting canvas:\n\n")) + x.what(),
				"details",
				_("Close"));

		set_value_(canvas);
	}
	catch(...)
	{
		App::dialog_message_1b(
				"ERROR",
				_("Unknown Exception"),
				"details",
				_("Close"));

		set_value_(canvas);
	}
}