/* === S Y N F I G ========================================================= */

/*!	\file layeraddframe.cpp

**	\brief Template File

**

**	$Id$

**

**	\legal

**	Copyright (c) 2014 Ivan Mahonin

**	Copyright (c) 2016 Jérôme Blanchi

**

**	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></config.h>

#endif

#include <synfig general.h=""></synfig>

#include "layeraddframe.h"

#include "layercopy.h"

#include <synfig context.h=""></synfig>

#include <synfigapp canvasinterface.h=""></synfigapp>

#include <synfigapp instance.h=""></synfigapp>

#include <synfigapp localization.h=""></synfigapp>

#endif

using namespace std;

using namespace etl;

using namespace synfig;

using namespace synfigapp;

using namespace Action;

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

ACTION_INIT(Action::LayerAddFrame);

ACTION_SET_NAME(Action::LayerAddFrame,"LayerAddFrame");

ACTION_SET_LOCAL_NAME(Action::LayerAddFrame,N_("Make New Frame"));

ACTION_SET_TASK(Action::LayerAddFrame,"add_frame");

ACTION_SET_CATEGORY(Action::LayerAddFrame,Action::CATEGORY_LAYER);

ACTION_SET_PRIORITY(Action::LayerAddFrame,0);

ACTION_SET_VERSION(Action::LayerAddFrame,"0.0");

ACTION_SET_CVS_ID(Action::LayerAddFrame,"$Id$");

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

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

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

Action::LayerAddFrame::LayerAddFrame():

	time(0)

{

}

Action::ParamVocab

Action::LayerAddFrame::get_param_vocab()

{

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

	ret.push_back(ParamDesc("layer",Param::TYPE_LAYER)

		.set_local_name(_("Layer"))

		.set_desc(_("New frame should be added into this Switch Layer"))

	);

	ret.push_back(ParamDesc("time",Param::TYPE_TIME)

		.set_local_name(_("Time"))

		.set_optional()

	);

	return ret;

}

bool

Action::LayerAddFrame::is_candidate(const ParamList &x)

{

	if (!candidate_check(get_param_vocab(),x)) return false;

	Layer::Handle layer=x.find("layer")->second.get_layer();

	if(!layer) return false;

	if (!etl::handle<layer_switch>::cast_dynamic(layer)) return false;</layer_switch>

	return true;

}

bool

Action::LayerAddFrame::set_param(const synfig::String& name, const Action::Param ¶m)

{

	if(name=="layer" && param.get_type()==Param::TYPE_LAYER)

	{

		layer_switch = etl::handle<layer_switch>::cast_dynamic(param.get_layer());</layer_switch>

		if (layer_switch)

		{

			layer_base = layer_switch->get_current_layer();

			if (!layer_base) layer_switch = NULL;

		}

		return layer_switch;

	}

	if(name=="time" && param.get_type()==Param::TYPE_TIME)

	{

		time=param.get_time();

		return true;

	}

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

}

bool

Action::LayerAddFrame::is_ready()const

{

	if(!layer_switch)

		return false;

	return Action::CanvasSpecific::is_ready();

}

void

Action::LayerAddFrame::prepare()

{

	if(!first_time())

		return;

	// check canvas for switch

	Canvas::Handle subcanvas(layer_switch->get_canvas());

	Canvas::iterator iter=find(subcanvas->begin(),subcanvas->end(),layer_switch);

	if(*iter!=layer_switch)

		throw Error(_("Switch layer doesn't exist anymore."));

	if(get_canvas()!=subcanvas && !subcanvas->is_inline())

		throw Error(_("Switch layer doesn't belong to this canvas anymore"));

	// check canvas for base

	subcanvas = layer_base->get_canvas();

	if (!subcanvas->is_inline())

		throw Error(_("Only inline canvas supported"));

	iter=find(subcanvas->begin(),subcanvas->end(),layer_base);

	if(*iter!=layer_base)

		throw Error(_("Base frame layer doesn't exist anymore."));

	if(layer_switch->get_sub_canvas() != subcanvas)

		throw Error(_("Base frame layer doesn't belong to switch layer canvas anymore"));

	// generate name

	String description, filename, filename_param;

	get_canvas_interface()

		->get_instance()

		->generate_new_name(

			layer_base,

			description,

			filename,

			filename_param );

	{

		Action::Handle action(Action::create("LayerCopy"));

		action->set_param("canvas",subcanvas);

		action->set_param("canvas_interface",get_canvas_interface());

		action->set_param("layer",layer_base);

		add_action(action);

	}

	{

		Action::Handle action(Action::create("ValueDescSet"));

		action->set_param("canvas",get_canvas());

		action->set_param("canvas_interface",get_canvas_interface());

		action->set_param("value_desc",ValueDesc(Layer::Handle(layer_switch), "layer_name"));

		action->set_param("time",time);

		action->set_param("new_value",ValueBase(description));

		action->set_param("animate",true);

		add_action(action);

	}

}