/* === S Y N F I G ========================================================= */
/*!	\file keyframeactionmanager.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 "keyframeactionmanager.h"
#include "trees/keyframetree.h"
#include <synfigapp/action_param.h>
#include "instance.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 ======================================================= */

KeyframeActionManager::KeyframeActionManager():
	keyframe_tree_(),
	action_group_(Gtk::ActionGroup::create("action_group_keyframe_action_manager")),
	popup_id_(no_prev_popup),
	queued(false)
{ }

KeyframeActionManager::~KeyframeActionManager()
{ }

void
KeyframeActionManager::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
KeyframeActionManager::set_keyframe_tree(KeyframeTree* x)
{
	if(selection_changed_connection) selection_changed_connection.disconnect();
	keyframe_tree_=x;
	if(keyframe_tree_)
	{
		selection_changed_connection=keyframe_tree_->get_selection()->signal_changed().connect(
			sigc::mem_fun(*this,&KeyframeActionManager::queue_refresh)
		);
	}
}

void
KeyframeActionManager::set_canvas_interface(const etl::handle<synfigapp::CanvasInterface> &x)
{
	if(time_changed_connection) time_changed_connection.disconnect();
	canvas_interface_=x;
	if(canvas_interface_)
	{
		// refresh keyframes list connected animation time position change
		time_changed_connection=canvas_interface_->signal_time_changed().connect(
			sigc::mem_fun(*this,&KeyframeActionManager::queue_refresh)
		);
	}
}

void
KeyframeActionManager::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;
#ifdef ONE_ACTION_GROUP
			while(!action_group_->get_actions().empty())action_group_->remove(*action_group_->get_actions().begin());
#else
			get_ui_manager()->remove_action_group(action_group_);
			action_group_=Gtk::ActionGroup::create("action_group_keyframe_action_manager");
#endif
		}
	}
}

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

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

	queued=true;
}

/*! \fn KeyframeActionManager::on_keyframe_properties()
**	\brief Signal handler for selected keyframe properties
*/
void
KeyframeActionManager::on_keyframe_properties()
{
	signal_show_keyframe_properties_();
}

/*! \fn KeyframeActionManager::on_keyframe_toggle()
**	\brief Signal handler for selected keyframe toogle
*/
void
KeyframeActionManager::on_keyframe_toggle()
{
	signal_keyframe_toggle_();
}

/*! \fn KeyframeActionManager::on_keyframe_description_set()
**	\brief Signal handler for selected keyframe description change
*/
void
KeyframeActionManager::on_keyframe_description_set()
{
	signal_keyframe_description_set_();
}

/*! \fn KeyframeActionManager::on_add_keyframe()
**	\brief Signal handler for add keyframe
*/
void
KeyframeActionManager::on_add_keyframe()
{
	synfigapp::Action::Handle action(synfigapp::Action::create("KeyframeAdd"));

	if(!action)
		return;

	action->set_param("canvas",canvas_interface_->get_canvas());
	action->set_param("canvas_interface",canvas_interface_);
	action->set_param("keyframe",Keyframe(canvas_interface_->get_time()));

	canvas_interface_->get_instance()->perform_action(action);
}

/*! \fn KeyframeActionManager::refresh()
**	\brief Refresh the action and signals connection for the selected keyframe
*/
void
KeyframeActionManager::refresh()
{
	KeyframeTreeStore::Model model;

	if(queued)
	{
		queued=false;
		//queue_refresh_connection.disconnect();
	}


	clear();

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

	String ui_info;

	{
		synfigapp::Action::ParamList param_list;
		param_list.add("time",get_canvas_interface()->get_time());
		param_list.add("canvas",get_canvas_interface()->get_canvas());
		param_list.add("canvas_interface",get_canvas_interface());
		if(keyframe_tree_->get_selection()->count_selected_rows()==1)
		{
			Keyframe keyframe((*keyframe_tree_->get_selection()->get_selected())[model.keyframe]);
			param_list.add("keyframe",keyframe);
		}

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

	Glib::RefPtr<Gtk::Action> action_kf_add = action_group_->get_action("action-KeyframeAdd");
	if(action_kf_add)
	{
		action_group_->remove(action_kf_add);
	}

	action_kf_add = Gtk::Action::create("action-KeyframeAdd",Gtk::StockID("gtk-add"),
										_("Add New Keyframe"),_("Add New Keyframe"));
	action_group_->add(action_kf_add, sigc::mem_fun(*this,&KeyframeActionManager::on_add_keyframe));

	//Keyframe properties definition
	Glib::RefPtr<Gtk::Action> action_kf_properties(Gtk::Action::create("keyframe-properties", Gtk::StockID("gtk-properties"),
														 _("Keyframe Properties"), _("Keyframe Properties")));
	action_group_->add(action_kf_properties,sigc::mem_fun(*this,&KeyframeActionManager::on_keyframe_properties));

	// Keyframe activate status definition
	Glib::RefPtr<Gtk::Action> action_kf_toggle(Gtk::Action::create("keyframe-toggle", _("Toggle Keyframe"), _("Toggle Keyframe")));
	action_group_->add(action_kf_toggle,sigc::mem_fun(*this,&KeyframeActionManager::on_keyframe_toggle));

	// Keyframe description defintion
	Glib::RefPtr<Gtk::Action> action_kf_description(Gtk::Action::create("keyframe-description-set", _("Set Keyframe Description"), _("Set Keyframe Description")));
	action_group_->add(action_kf_description,sigc::mem_fun(*this,&KeyframeActionManager::on_keyframe_description_set));

	//activate actions depending on context
	{
		//get the keyframe at current time
		bool kf_at_current_time = true;
		try
		{
			canvas_interface_->get_canvas()->keyframe_list().find(canvas_interface_->get_time());
			if(action_group_->get_action("action-KeyframeDuplicate"))
				action_group_->get_action("action-KeyframeDuplicate")->set_sensitive(false);
		}
		catch(synfig::Exception::NotFound)
		{
			kf_at_current_time = false;
		}
		//get the beginning and ending time of the time slider
		Time begin_time=canvas_interface_->get_canvas()->rend_desc().get_time_start();
		Time end_time=canvas_interface_->get_canvas()->rend_desc().get_time_end();
		//enable add key frame action if animation duration != 0
		if(kf_at_current_time||(begin_time==end_time))
		{
			action_kf_add->set_sensitive(false);
		}
		else
		{
			action_kf_add->set_sensitive(true);
		}

		if(keyframe_tree_->get_selection()->count_selected_rows()==0)
		{
			action_kf_properties->set_sensitive(false);
			action_kf_toggle->set_sensitive(false);
			action_kf_description->set_sensitive(false);
		}
	}

	// this popup menu is used from widget_keyframe_list
	String full_ui_info;
	full_ui_info=
			"<ui>"
				"<popup action='menu-keyframe'>"
						"<menuitem action='action-KeyframeAdd' />"
						"<menuitem action='action-KeyframeDuplicate' />"
						"<menuitem action='action-KeyframeRemove' />"
						"<menuitem action='keyframe-properties' />"
						"<menuitem action='keyframe-toggle' />"
						"<menuitem action='keyframe-description-set' />"
				"</popup>"
			"</ui>";
	popup_id_=get_ui_manager()->add_ui_from_string(full_ui_info);

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