/*
  This file is part of Ingen.
  Copyright 2007-2012 David Robillard <http://drobilla.net/>

  Ingen is free software: you can redistribute it and/or modify it under the
  terms of the GNU Affero General Public License as published by the Free
  Software Foundation, either version 3 of the License, or any later version.

  Ingen 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 Affero General Public License for details.

  You should have received a copy of the GNU Affero General Public License
  along with Ingen.  If not, see <http://www.gnu.org/licenses/>.
*/

#include <cassert>
#include <fstream>
#include "raul/log.hpp"
#include "ingen/Interface.hpp"
#include "ingen/shared/LV2URIMap.hpp"
#include "ingen/client/PatchModel.hpp"
#include "App.hpp"
#include "PatchView.hpp"
#include "PatchCanvas.hpp"
#include "LoadPluginWindow.hpp"
#include "NewSubpatchWindow.hpp"
#include "NodeControlWindow.hpp"
#include "PatchTreeWindow.hpp"
#include "WidgetFactory.hpp"

using namespace std;
using namespace Raul;

namespace Ingen {
namespace GUI {

PatchView::PatchView(BaseObjectType*                   cobject,
                     const Glib::RefPtr<Gtk::Builder>& xml)
	: Gtk::Box(cobject)
	, _app(NULL)
	, _breadcrumb_container(NULL)
	, _enable_signal(true)
{
	property_visible() = false;

	xml->get_widget("patch_view_breadcrumb_container", _breadcrumb_container);
	xml->get_widget("patch_view_toolbar", _toolbar);
	xml->get_widget("patch_view_process_but", _process_but);
	xml->get_widget("patch_view_poly_spin", _poly_spin);
	xml->get_widget("patch_view_refresh_but", _refresh_but);
	xml->get_widget("patch_view_save_but", _save_but);
	xml->get_widget("patch_view_zoom_full_but", _zoom_full_but);
	xml->get_widget("patch_view_zoom_normal_but", _zoom_normal_but);
	xml->get_widget("patch_view_edit_mode_but", _edit_mode_but);
	xml->get_widget("patch_view_scrolledwindow", _canvas_scrolledwindow);

	_toolbar->set_toolbar_style(Gtk::TOOLBAR_ICONS);
	_canvas_scrolledwindow->property_hadjustment().get_value()->set_step_increment(10);
	_canvas_scrolledwindow->property_vadjustment().get_value()->set_step_increment(10);
}

void
PatchView::init(App& app)
{
	_app = &app;
}

void
PatchView::set_patch(SharedPtr<const PatchModel> patch)
{
	assert(!_canvas); // FIXME: remove

	assert(_breadcrumb_container); // ensure created

	_patch = patch;
	_canvas = SharedPtr<PatchCanvas>(new PatchCanvas(*_app, patch, 1600*2, 1200*2));
	_canvas->build();

	_canvas_scrolledwindow->add(_canvas->widget());

	_poly_spin->set_value(patch->internal_poly());

	for (GraphObject::Properties::const_iterator i = patch->properties().begin();
			i != patch->properties().end(); ++i)
		property_changed(i->first, i->second);

	// Connect model signals to track state
	patch->signal_property().connect(
		sigc::mem_fun(this, &PatchView::property_changed));

	// Connect widget signals to do things
	_process_but->signal_toggled().connect(
		sigc::mem_fun(this, &PatchView::process_toggled));
	_refresh_but->signal_clicked().connect(
		sigc::mem_fun(this, &PatchView::refresh_clicked));

	_zoom_normal_but->signal_clicked().connect(sigc::bind(sigc::mem_fun(
		_canvas.get(), &PatchCanvas::set_zoom), 1.0));

	_zoom_full_but->signal_clicked().connect(
		sigc::mem_fun(_canvas.get(), &PatchCanvas::zoom_full));

	patch->signal_editable().connect(sigc::mem_fun(
			*this, &PatchView::on_editable_sig));

	_edit_mode_but->signal_toggled().connect(sigc::mem_fun(
			*this, &PatchView::editable_toggled));

	_poly_spin->signal_value_changed().connect(
			sigc::mem_fun(*this, &PatchView::poly_changed));

	#if 0
	_canvas->signal_item_entered.connect(
			sigc::mem_fun(*this, &PatchView::canvas_item_entered));

	_canvas->signal_item_left.connect(
			sigc::mem_fun(*this, &PatchView::canvas_item_left));
	#endif

	_canvas->widget().grab_focus();
}

SharedPtr<PatchView>
PatchView::create(App& app, SharedPtr<const PatchModel> patch)
{
	PatchView* result = NULL;
	Glib::RefPtr<Gtk::Builder> xml = WidgetFactory::create("warehouse_win");
	xml->get_widget_derived("patch_view_box", result);
	result->init(app);
	result->set_patch(patch);
	return SharedPtr<PatchView>(result);
}

void
PatchView::on_editable_sig(bool editable)
{
	_edit_mode_but->set_active(editable);
	_canvas->set_locked(!editable);
}

void
PatchView::editable_toggled()
{
	const bool editable = _edit_mode_but->get_active();
	set_editable(editable);
}

void
PatchView::set_editable(bool editable)
{
	_patch->set_editable(editable);
	_canvas->set_locked(!editable);
}

#if 0
void
PatchView::canvas_item_entered(Gnome::Canvas::Item* item)
{
	NodeModule* m = dynamic_cast<NodeModule*>(item);
	if (m)
		signal_object_entered.emit(m->node().get());

	const Port* p = dynamic_cast<const Port*>(item);
	if (p)
		signal_object_entered.emit(p->model().get());
}

void
PatchView::canvas_item_left(Gnome::Canvas::Item* item)
{
	NodeModule* m = dynamic_cast<NodeModule*>(item);
	if (m) {
		signal_object_left.emit(m->node().get());
		return;
	}

	const Port* p = dynamic_cast<const Port*>(item);
	if (p)
		signal_object_left.emit(p->model().get());
}
#endif

void
PatchView::process_toggled()
{
	if (!_enable_signal)
		return;

	_app->engine()->set_property(
		_patch->path(),
		_app->uris().ingen_enabled,
		_app->forge().make((bool)_process_but->get_active()));
}

void
PatchView::poly_changed()
{
	_app->engine()->set_property(
		_patch->path(),
		_app->uris().ingen_polyphony,
		_app->forge().make(_poly_spin->get_value_as_int()));
}

void
PatchView::refresh_clicked()
{
	_app->engine()->get(_patch->path());
	Raul::warn << "Refresh plugins" << std::endl;
	_app->engine()->get("ingen:plugins");
}

void
PatchView::property_changed(const Raul::URI& predicate, const Raul::Atom& value)
{
	_enable_signal = false;
	if (predicate == _app->uris().ingen_enabled) {
		if (value.type() == _app->uris().forge.Bool) {
			_process_but->set_active(value.get_bool());
		} else {
			warn << "Bad type for ingen:enabled variable: " << value.type() << endl;
		}
	}
	_enable_signal = true;
}

} // namespace GUI
} // namespace Ingen