#!/usr/bin/python

import os
import sys

import pygtk
pygtk.require('2.0')
import gtk
import gtk.gdk
import gtk.glade
import gnome
import gnome.ui
import scipy
import pango
from system import project, workflow, dataset, logger, plots, navigator, dialogs


PROGRAM_NAME = 'fluents'
VERSION = '0.1.0'
DATADIR = os.path.dirname(sys.modules['system'].__file__)
GLADEFILENAME = os.path.join(DATADIR, 'fluents.glade')

class FluentApp:

    def __init__(self, wf): # Application variables
        self.project = None
        self.current_data = None
        self._last_view = None
        self._plot_toolbar = None
        
        gtk.glade.set_custom_handler(self.custom_object_factory)
        self.widget_tree = gtk.glade.XML(GLADEFILENAME, 'appwindow')
        self.workflow = wf(self)

    def init_gui(self):
        self['appwindow'].set_size_request(800, 600)

        # Set up workflow
        self.wf_menu = workflow.WorkflowView(self.workflow)
        self.wf_menu.show()
        self['workflow_vbox'].pack_end(self.wf_menu)

        # Set up plot toolbar
#        self['plot_toolbar_dock'].add(plot.get_toolbar(self.app))

        # Connect signals
        signals = {'on_quit1_activate' : (gtk.main_quit),
                   'on_appwindow_delete_event' : (gtk.main_quit),
                   'on_zoom_in_button_clicked' : (self.on_single_view),
                   'on_zoom_out_button_clicked' : (self.on_multiple_view),
                   'on_new1_activate' : (self.on_create_project),
                   'on_button_new_clicked' : (self.on_create_project),
                   'on_workflow_refresh_clicked' : (self.on_workflow_refresh_clicked),
                   'on_index1_activate' : (self.on_help_index),
                   'on_about1_activate' : (self.on_help_about),
                   'on_report_bug1_activate' : (self.on_help_report_bug),
                   'on_small_view1_activate' : (self.on_multiple_view),
                   'on_large_view1_activate' : (self.on_single_view),
                  }
        self.widget_tree.signal_autoconnect(signals)

        self['main_view'].connect('view-changed', self.on_view_changed)

        # Log that we've set up the app now
        logger.log('debug', 'Program started')

    def set_project(self, project):
        logger.log('notice', 'Creating a new project')
        self.project = project
        self.workflow.add_project(self.project)
        self.navigator_view.add_project(self.project)

    def set_workflow(self, workflow):
        self.workflow = workflow
        self.wf_menu.set_workflow(self.workflow)

    def show(self):
        self.init_gui()

    def change_plot(self, plot):
        pt = self.widget_tree.get_widget('main_view')
        pt.insert_view(plot)
        
    def get_active_view_frame(self):
        return self['main_view'].get_active_view_frame()

    def _update_toolbar(self, view):
        "Set the plot specific toolbar to the toolbar of the currently active plot."

        # don't do anything on no change
        if self._last_view == view:
            return
        self._last_view = view
        
        logger.log("debug", "view changed to %s" % view)

        window = self.widget_tree.get_widget('plot_toolbar_dock')
        if self._plot_toolbar:
            window.remove(self._plot_toolbar)
        
        if view:    
            self._plot_toolbar = view.get_toolbar()
        else:
            self._plot_toolbar = None

        if self._plot_toolbar:
            window.add(self._plot_toolbar)

    # Methods to create GUI widgets from CustomWidgets in the glade file.
    # The custom_object_factory calls other functions to generate specific
    # widgets.

    def custom_object_factory(self, glade, fun_name, widget_name, s1, s2, i1, i2):
        "Called by the glade file reader to create custom GUI widgets."
        handler = getattr(self, fun_name)
        return handler(s1, s2, i1, i2)
        
    def create_logview(self, str1, str2, int1, int2):
        self.log_view = logger.LogView(logger.logger)
        self.log_view.show()
        return self.log_view

    def create_main_view(self, str1, str2, int1, int2):
        self.main_view = plots.MainView()
        self.main_view.show()
        return self.main_view

    def create_navigator_view(self, str1, str2, int1, int2):
        self.navigator_view = navigator.NavigatorView(None, self)
        self.navigator_view.show()
        return self.navigator_view

    # Event handlers.
    # These methods are called by the gtk framework in response to events and
    # should not be called directly.

    def on_single_view(self, *ignored):
        self['main_view'].goto_large()

    def on_multiple_view(self, *ignored):
        self['main_view'].goto_small()

    def __getitem__(self, key):
        return self.widget_tree.get_widget(key)

    def on_create_project(self, *rest):
        d = dialogs.CreateProjectDruid(self)
        d.run()
        
    def on_help_about(self, *rest):
        widget_tree = gtk.glade.XML(GLADEFILENAME, 'aboutdialog')
        about = widget_tree.get_widget('aboutdialog')
        about.run()

    def on_help_index(self, *ignored):
        gnome.help_display_uri('https://dev.pvv.org/projects/fluent/wiki/help')

    def on_help_report_bug(self, *ignored):
        gnome.help_display_uri('https://dev.pvv.org/projects/fluent/newticket')

    def on_workflow_refresh_clicked(self, *ignored):
        try:
            reload(sys.modules[self.workflow.__class__.__module__])
        except Exception, e:
            logger.log('warning', 'Cannot reload workflow')
            logger.log('warning', e)
        else:
            logger.log('notice', 'Successfully reloaded workflow')

    def on_view_changed(self, widget, vf):
        self._update_toolbar(vf.get_view())