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/* === S Y N F I G ========================================================= */
/*!     \file valuenoderemove.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 "valuenoderemove.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::ValueNodeRemove);
ACTION_SET_NAME(Action::ValueNodeRemove,"value_node_remove");
ACTION_SET_LOCAL_NAME(Action::ValueNodeRemove,N_("Unexport"));
ACTION_SET_TASK(Action::ValueNodeRemove,"remove");
ACTION_SET_CATEGORY(Action::ValueNodeRemove,Action::CATEGORY_VALUENODE);
ACTION_SET_PRIORITY(Action::ValueNodeRemove,0);
ACTION_SET_VERSION(Action::ValueNodeRemove,"0.0");
ACTION_SET_CVS_ID(Action::ValueNodeRemove,"$Id$");

/* === 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::ValueNodeRemove::ValueNodeRemove()
{
}

synfig::String
Action::ValueNodeRemove::get_local_name()const
{
        // TRANSLATORS: This is used in the 'history' dialog when a ValueNode is unexported.
        return strprintf(_("Unexport '%s'"), old_name.c_str());
}

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

        ret.push_back(ParamDesc("value_node",Param::TYPE_VALUENODE)
                .set_local_name(_("ValueNode"))
        );

        return ret;
}

bool
Action::ValueNodeRemove::is_candidate(const ParamList &x)
{
        if(candidate_check(get_param_vocab(),x))
        {
                ValueNode::Handle value_node=x.find("value_node")->second.get_value_node();
                if(!value_node->is_exported())
                        return false;
//              if(value_node->rcount()!=1)
//                      return false;
                return true;
        }
        return false;
}

bool
Action::ValueNodeRemove::set_param(const synfig::String& name, const Action::Param &param)
{
        if(name=="value_node" && param.get_type()==Param::TYPE_VALUENODE)
        {
                value_node=param.get_value_node();

                if(value_node && !value_node->is_exported())
                {
                        synfig::error("Action::ValueNodeRemove::set_param(): ValueBase node not exported!");
                        value_node=0;
                }

                return (bool)value_node;
        }

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

bool
Action::ValueNodeRemove::is_ready()const
{
        if(!value_node)
                synfig::error("Action::ValueNodeRemove::is_ready(): ValueNode not set!");

        if(!value_node)
                return false;
        return Action::CanvasSpecific::is_ready();
}

void
Action::ValueNodeRemove::perform()
{
//      if(value_node->rcount()!=1)
//              throw Error(_("ValueNode is still being used by something"));

        old_name=value_node->get_id();
        parent_canvas=value_node->get_parent_canvas();
        parent_canvas->remove_value_node(value_node);

        if(get_canvas_interface())
        {
                get_canvas_interface()->signal_value_node_deleted()(value_node);
        }

        //throw Error(_("Not yet implemented"));
/*
        assert(value_node->is_exported());

        if(get_canvas()->value_node_list().count(new_name))
                throw Error(_("A ValueNode with this ID already exists in this canvas"));

        old_name=value_node->get_id();

        value_node->set_id(new_name);

        if(get_canvas_interface())
        {
                get_canvas_interface()->signal_value_node_changed()(value_node);
        }
*/
}

void
Action::ValueNodeRemove::undo()
{
        parent_canvas->add_value_node(value_node,old_name);
        if(get_canvas_interface())
        {
                get_canvas_interface()->signal_value_node_added()(value_node);
        }

        //throw Error(_("Not yet implemented"));
/*
        assert(value_node->is_exported());

        if(get_canvas()->value_node_list().count(old_name))
                throw Error(_("A ValueNode with the old ID already exists in this canvas (BUG)"));

        value_node->set_id(old_name);

        if(get_canvas_interface())
        {
                get_canvas_interface()->signal_value_node_changed()(value_node);
        }
*/
}