/* === S Y N F I G ========================================================= */
/*!	\file layersetdesc.cpp
**	\brief Template File
**
**	$Id$
**
**	\legal
**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**	Copyright (c) 2008 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 "layersetdesc.h"
#include <synfigapp/canvasinterface.h>

#include <synfigapp/general.h>

#endif

using namespace std;
using namespace etl;
using namespace synfig;
using namespace synfigapp;
using namespace Action;

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

ACTION_INIT_NO_GET_LOCAL_NAME(Action::LayerSetDesc);
ACTION_SET_NAME(Action::LayerSetDesc,"LayerSetDesc");
ACTION_SET_LOCAL_NAME(Action::LayerSetDesc,N_("Set Layer Description"));
ACTION_SET_TASK(Action::LayerSetDesc,"set_desc");
ACTION_SET_CATEGORY(Action::LayerSetDesc,Action::CATEGORY_LAYER);
ACTION_SET_PRIORITY(Action::LayerSetDesc,0);
ACTION_SET_VERSION(Action::LayerSetDesc,"0.0");
ACTION_SET_CVS_ID(Action::LayerSetDesc,"$Id$");

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

// static const int nindex=-1;

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

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

Action::LayerSetDesc::LayerSetDesc()
{
}

synfig::String
Action::LayerSetDesc::get_local_name()const
{
	return strprintf("%s: '%s' -> '%s'",
					 _("Set Layer Description"),
					 /* TRANSLATORS: this is the string used in the history dialog when renaming a layer to/from its default name */
					 old_description.empty() ? _("[default]") : old_description.c_str(),
					 new_description.empty() ? _("[default]") : new_description.c_str());
}

Action::ParamVocab
Action::LayerSetDesc::get_param_vocab()
{
	ParamVocab ret(Action::CanvasSpecific::get_param_vocab());

	ret.push_back(ParamDesc("layer",Param::TYPE_LAYER)
		.set_local_name(_("Layer"))
		.set_desc(_("Layer to be described"))
	);

	ret.push_back(ParamDesc("new_description",Param::TYPE_STRING)
		.set_local_name(_("New Description"))
		.set_local_name(_("Enter a new description for this layer"))
		.set_user_supplied()
		.set_value_provided()
	);

	return ret;
}

bool
Action::LayerSetDesc::is_candidate(const ParamList &x)
{
	return candidate_check(get_param_vocab(),x);
}

bool
Action::LayerSetDesc::set_param(const synfig::String& name, const Action::Param &param)
{
	if(name=="layer" && param.get_type()==Param::TYPE_LAYER)
	{
		layer=param.get_layer();

		return true;
	}

	if(name=="new_description" && param.get_type()==Param::TYPE_STRING)
	{
		new_description=param.get_string();

		return true;
	}

	return Action::CanvasSpecific::set_param(name,param);
}

bool
Action::LayerSetDesc::get_param(const synfig::String& name, Action::Param &param)
{
	if(name=="new_description")
	{
		param=layer->get_description();

		return true;
	}
	return Action::CanvasSpecific::get_param(name,param);
}

bool
Action::LayerSetDesc::is_ready()const
{
	if(!layer)
		return false;
	return Action::CanvasSpecific::is_ready();
}

void
Action::LayerSetDesc::perform()
{
	old_description=layer->get_description();
	layer->set_description(new_description);
	set_dirty(false);
	if(get_canvas_interface())
	{
		get_canvas_interface()->signal_layer_new_description()(layer,new_description);
	}
	else synfig::warning("CanvasInterface not set on action");
}

void
Action::LayerSetDesc::undo()
{
	layer->set_description(old_description);
	set_dirty(false);
	if(get_canvas_interface())
	{
		get_canvas_interface()->signal_layer_new_description()(layer,old_description);
	}
	else synfig::warning("CanvasInterface not set on action");
}