# -*- coding: utf-8 -*-
# date: 17 Apr 2009

import pygtk
pygtk.require('2.0')
import gtk
import gtk.glade
import gobject
import item
import time
from license import version, gpl_3

class ui_pygtk:
    def __init__(self, itemList):
        self.itemList = itemList
        
        # load ui from glade file
        glade = gtk.glade.XML ("todolist.glade")
        self.main_window = glade.get_widget('main_window')

        self.edit_dialog = glade.get_widget('edit_dialog')
        self.edit_dialog.title_field = glade.get_widget('title_field')
        self.edit_dialog.priority_field = glade.get_widget('priority_field')
        self.edit_dialog.desc_field = glade.get_widget('description_field')
        self.main_window.todolist = glade.get_widget('todolist')

        # connect the defined signales
        dic = {"on_menu_about_clicked"          : self.about_clicked_callback,
               "on_menu_quit_clicked"           : gtk.main_quit,
               "on_main_window_destroy"         : gtk.main_quit,
               "on_treeview_row_activated"      : self.item_double_clicked_callback,
               "on_edit_clicked"                : self.edit_clicked_callback}
        glade.signal_autoconnect(dic)

        # fill the treeview with data
        liststore = gtk.ListStore(object)
        for items in self.itemList:
            liststore.append([items])

        self.main_window.todolist.set_model(liststore)
        self.main_window.todolist.append_column(self.create_column(0, 'Finished', 'getCompleted', liststore, gtk.CellRendererToggle()))
        for column in ([['Id', 'getId'],
                        ['ToDo', 'getTitle'],
                        ['...', 'getDescription'],
                        ['Erstellt am', ['getCreatedAt',
                         (lambda x: time.strftime('%d.%m.%Y %H:%M:%S', time.localtime(x)))]]
                        ]):
            self.main_window.todolist.append_column(self.create_column(len(self.main_window.todolist.get_columns())+1, column[0], column[1], liststore))
        
        # start ui
        self.main_window.show_all()
        gtk.main()
        return

    def create_column(self, id, title, data, treemodel, cellRenderer=gtk.CellRendererText()):
        # abstract mmethod to create a column for the data
        # from the item objects in the treeview 
        column = gtk.TreeViewColumn(title, cellRenderer)
        
        column.set_cell_data_func(cellRenderer, self.item_data_callback, data)
        column.set_reorderable(True)
        column.set_resizable(True)
        column.set_sort_column_id(id)

        treemodel.set_sort_func(id, (lambda model, iter1, iter2, userdata=None:
                                     apply(cmp,
                                            map((lambda x: self.item_data_callback(column, None, model, x, data)),
                                                [iter1, iter2]))))
        return column

    #########################################################
    # callbacks
    #########################################################

    def item_data_callback(self, column, cell, model, iter, userdata=None):
        # method to get the data from the item object for one column
        data=''
        if (userdata == None):
            # try to convert the object to string
            data =  model.get_value(iter, 0)
        else:
            if type(userdata) is type([]):
                data = getattr(model.get_value(iter, 0), userdata[0])()

                # modify data with the given functions
                for i in xrange (1, len(userdata)):
                    data = userdata[i](data)
            else:
                data = getattr(model.get_value(iter, 0), userdata)()

        # set the data as cell content
        if isinstance(cell, gtk.CellRendererText) :
            cell.set_property('text', data)
        elif isinstance(cell, gtk.CellRendererToggle) :
            cell.set_property('active', data)
        else:
            return data

    def about_clicked_callback(self, widget, data=None):
        # show the about dialog
        about_window = gtk.AboutDialog()
        about_window.set_name('Todolist')
        about_window.set_version(version)
        about_window.set_copyright('2009 Alexander Sulfrian')
        about_window.set_license(gpl_3)
        about_window.set_website('http://git.animux.de/todolist.git')
        about_window.run()
        about_window.hide()
        return

    def edit_clicked_callback(self, widget, data=None):
        # edit btn click
        treeview = self.main_window.todolist
        if (treeview.get_selection().count_selected_rows() == 1):
            item = treeview.get_model().get_value(treeview.get_selection().get_selected()[1], 0)

            if self.edit_item(item):
                sort = list(treeview.get_model().get_sort_column_id())
                treeview.get_model().set_sort_column_id(0, gtk.SORT_ASCENDING)
                apply( treeview.get_model(), sort)
        
    def item_double_clicked_callback(self, treeview, path, view_column, user_data=None):
        # dbl click on treeview row to edit item
        model = treeview.get_model() 
        item = model.get_value(model.get_iter(path), 0)

        if self.edit_item(item):
            sort = list(model.get_sort_column_id())
            model.set_sort_column_id(0, gtk.SORT_ASCENDING)
            apply(model.set_sort_column_id, sort)
        return

    #########################################################
    # helper methods
    #########################################################

    def edit_item(self, item):
        # helper method to edit item
        self.edit_dialog.title_field.set_text(item.getTitle())
        self.edit_dialog.priority_field.set_text(item.getPriority().__str__())

        text_buffer = gtk.TextBuffer()
        if item.getDescription() != None:
            text_buffer.set_text(item.getDescription())
        self.edit_dialog.desc_field.set_buffer(text_buffer)
                
        successfull = self.edit_dialog.run()
        self.edit_dialog.hide()

        if (successfull):
            item.title = self.edit_dialog.title_field.get_text()
            item.priority = self.edit_dialog.priority_field.get_text()
            item.description = text_buffer.get_text(text_buffer.get_start_iter(), text_buffer.get_end_iter())

        return successfull