/* === S Y N F I G ========================================================= */
/*!	\file groupactionmanager.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 <glibmm.h>
#include "groupactionmanager.h"
#include "trees/layergrouptree.h"
#include <synfigapp/action_param.h>
#include "instance.h"
#include <gtkmm/stock.h>

#include "general.h"

#endif

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

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

static const guint no_prev_popup((guint)-1);

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

//#define ONE_ACTION_GROUP 1

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

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

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

GroupActionManager::GroupActionManager():
	group_tree_(),
	action_group_(Gtk::ActionGroup::create("action_group_group_action_manager")),
	popup_id_(no_prev_popup),
	queued(false)
{ }

GroupActionManager::~GroupActionManager()
{ }

void
GroupActionManager::set_ui_manager(const Glib::RefPtr<Gtk::UIManager> &x)
{
	clear();

#ifdef ONE_ACTION_GROUP
	if(ui_manager_)	get_ui_manager()->remove_action_group(action_group_);
	ui_manager_=x;
	if(ui_manager_)	get_ui_manager()->insert_action_group(action_group_);
#else
	ui_manager_=x;
#endif
}

void
GroupActionManager::set_group_tree(LayerGroupTree* x)
{
	selection_changed_connection.disconnect();
	group_tree_=x;
	if(group_tree_)
	{
		selection_changed_connection=group_tree_->get_selection()->signal_changed().connect(
			sigc::mem_fun(*this,&GroupActionManager::queue_refresh)
		);
	}
}

void
GroupActionManager::set_canvas_interface(const etl::handle<synfigapp::CanvasInterface> &x)
{
	canvas_interface_=x;
}

void
GroupActionManager::clear()
{
	if(ui_manager_)
	{
		// Clear out old stuff
		if(popup_id_!=no_prev_popup)
		{
			get_ui_manager()->remove_ui(popup_id_);
			popup_id_=no_prev_popup;
			action_group_->set_sensitive(false);
#ifdef ONE_ACTION_GROUP
			while(!action_group_->get_actions().empty())action_group_->remove(*action_group_->get_actions().begin());
			action_group_->set_sensitive(true);
#else
			get_ui_manager()->remove_action_group(action_group_);
			action_group_=Gtk::ActionGroup::create("action_group_group_action_manager");
#endif
		}
	}
}

void
GroupActionManager::queue_refresh()
{
	if(queued)
		return;

	//queue_refresh_connection.disconnect();
	queue_refresh_connection=Glib::signal_idle().connect(
		sigc::bind_return(
			sigc::mem_fun(*this,&GroupActionManager::refresh),
			false
		)
	);

	queued=true;
}

void
GroupActionManager::refresh()
{
	if(queued)
	{
		queued=false;
		//queue_refresh_connection.disconnect();
	}


	clear();

	// Make sure we are ready
	if(!ui_manager_ || !group_tree_ || !canvas_interface_)
	{
		synfig::error("GroupActionManager::refresh(): Not ready!");
		return;
	}

	if(group_tree_->get_selection()->count_selected_rows()==0)
		return;

	String ui_info;

	{
		{
			action_group_->add(
				Gtk::Action::create(
					"action-group_add",
					Gtk::Stock::ADD,
					_("Add a New Set"),
					_("Add a New Set")
				),
				sigc::mem_fun(
					*this,
					&GroupActionManager::on_action_add
				)
			);
		}


//		bool multiple_selected(group_tree_->get_selection()->count_selected_rows()>1);
		LayerGroupTree::LayerList selected_layers(group_tree_->get_selected_layers());
		std::list<synfig::String> selected_groups(group_tree_->get_selected_groups());

		{
			bool canvas_set(false);
			synfigapp::Action::ParamList param_list;
			param_list.add("time",get_canvas_interface()->get_time());
			param_list.add("canvas_interface",get_canvas_interface());

			{
				LayerGroupTree::LayerList::iterator iter;

				for(iter=selected_layers.begin();iter!=selected_layers.end();++iter)
				{
					if(!canvas_set)
					{
						param_list.add("canvas",Canvas::Handle(Layer::Handle(*iter)->get_canvas()));
						canvas_set=true;
					}
					param_list.add("layer",Layer::Handle(*iter));
				}
			}

			{
				std::list<synfig::String>::iterator iter;

				for(iter=selected_groups.begin();iter!=selected_groups.end();++iter)
				{
					param_list.add("group",(synfig::String)*iter);
				}
			}

			if(!canvas_set)
			{
				param_list.add("canvas",Canvas::Handle(get_canvas_interface()->get_canvas()));
				canvas_set=true;
			}

			handle<studio::Instance>::cast_static(get_canvas_interface()->get_instance())->
				add_actions_to_group(action_group_, ui_info,   param_list, synfigapp::Action::CATEGORY_GROUP);
			}
	}

	if(true)
	{
		String full_ui_info;
		full_ui_info="<ui><popup action='menu-main'><menu action='menu-group'>"+ui_info+"</menu></popup></ui>";
		popup_id_=get_ui_manager()->add_ui_from_string(full_ui_info);
		full_ui_info="<ui><menubar action='menubar-main'><menu action='menu-group'>"+ui_info+"</menu></menubar></ui>";
		popup_id_=get_ui_manager()->add_ui_from_string(full_ui_info);
	}
	else
	{
		get_ui_manager()->ensure_update();
	}

#ifdef ONE_ACTION_GROUP
#else
	get_ui_manager()->insert_action_group(action_group_);
#endif
}

void
GroupActionManager::on_action_add()
{
	LayerGroupTreeStore::Model model;

	String group_name;

	Gtk::TreeIter selected_iter;

	if(group_tree_->get_selection()->count_selected_rows())
	{
		selected_iter=(
			group_tree_->get_model()->get_iter(
				(*group_tree_->get_selection()->get_selected_rows().begin())
			)
		);
		if(selected_iter && selected_iter->parent())
			group_name=(Glib::ustring)(*selected_iter->parent())[model.group_name]+'.';
	}

	group_name+=_("Unnamed Set");

	Gtk::TreePath path(group_tree_->get_model()->on_group_added(group_name));

	group_tree_->expand_to_path(path);
}