# Copyright (C) 2009, Tutorius.org
#
# This program 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 program 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.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
import gtk
import gobject

from Rating import Rating
from WorkshopModel import WorkshopModel
from WorkshopController import WorkshopController
from dialogs import InfoDialog
import operator
import logging

class WorkshopView(gtk.Alignment):
    """
    Main container for the Workshop Mytutorial Part
    """
    def __init__(self,model):
        """
        Constructor
        """
        gtk.Alignment.__init__(self,0.0,0.0,1.0,1.0)
        
        #Register Rating as a gobject
        gobject.type_register(Rating)
        
        #create the model and the controller
        self.controller = WorkshopController(self,model)
        
        #Create the main view
        self.mainView = WorkshopMain(self.controller)
        self.detailView = None

        #display the main view
        self.add(self.mainView)        
        self.mainView.show()



    def set_categories(self,categories):
        self.categories = categories
        
    def set_tutorial_list(self,tutorial_list):
        """
        Set the list of tutorial to display in the main View
        Refresh the View

        @param tutorial_list the list of tutorial
        """
        self.mainView.set_tutorial_list(tutorial_list)


    def change_sorting(self,sorting_key):
        """
        Sort the list of tutorial base on the sorting_key

        @param sorting_key the tutorial metadata to use to sort the tutorials
        """
        self.mainView.change_sorting(sorting_key)

    def display_detail(self,tutorial):
        """
        Displays the detail view of a tutorial

        @param tutorial the tutorial to display
        """
        #hide the main view
        self.mainView.hide()
        self.remove(self.mainView)
        
        #create the detail view and show it
        self.detailView = MyTutorialDetail(tutorial,self.controller)
        self.add(self.detailView)
        self.detailView.show()

    def display_main_view(self):
        """
        Displays the main view of the Workshop
        """
        #hide the detail view
        self.detailView.hide()
        self.remove(self.detailView)
        
        #display the main view
        self.add(self.mainView)
        self.mainView.show()

    def display_info_dialog(self,tutorial):
        """
        Displays the infos dialog on a tutorial

        @param tutorial the tutorial to edit
        """
        infoDialog = InfoDialog(tutorial,self.controller,self.categories)
        infoDialog.run()
        infoDialog.destroy()
        
    
    def refresh_content(self):
        """
        Refresh the data displayed
        """
        #refresh the tutorial list
        self.mainView.refresh_tutorial_display()
        
        #refresh the detail view
        if self.detailView is not None:
            self.detailView.refresh_content()

class WorkshopMain(gtk.VBox):
    """
    Contains the main view for the Workshop My tutorial
    """
    def __init__(self,controller):
        """Constructor
        
        @param controller The controller to attach the view to
        """
        gtk.VBox.__init__(self,False,10)

        self.controller = controller
        self.tutorial_list = []
        
        #by default tutorials are sorted by name
        self.sorting_key = 'Name'

        self.set_border_width(10)
        
        #The searchbar is displayed at the top
        self.search_bar = SearchBar(self.controller)
        self.pack_start(self.search_bar,False,False)

        #Add a separator after the search bar
        sep = gtk.HSeparator()
        self.pack_start(sep,False,False)
        
        #create the list item container with a scroll bar if necessary
        self.main_container = gtk.ScrolledWindow()
        self.main_container.set_policy(gtk.POLICY_AUTOMATIC,gtk.POLICY_AUTOMATIC)

        self.list_container= gtk.VBox()

        self.main_container.add_with_viewport(self.list_container)
        self.pack_start(self.main_container)

        #Show the components
        self.search_bar.show()
        self.list_container.show()
        self.main_container.show()
        sep.show()
        

    def change_sorting(self,sorting):
        """
        Changes the property by which tutorial are sorted
        
        @param sorting The property by which tutorials will be sorted
        """
        
        self.sorting_key = sorting
        self.sort_tutorial()
    
    def sort_tutorial(self):
        """
        Sorts the tutorials
        """
        
        #if tutorials are sorted by rating they are in the reverse order
        self.tutorial_list.sort(key=operator.attrgetter(self.sorting_key.lower()))
        self.refresh_tutorial_display()
        
    def set_tutorial_list(self,tutorial_list):
        """
        Set the list of tutorial to display
        
        @param tutorial_list the tutorial list
        """
        self.tutorial_list = tutorial_list
        self.sort_tutorial()
        
    def refresh_tutorial_display(self):
        """
        Refresh the tutorial content by deleting every item and recreating them
        """
        #delete every tutorial list item
        for child in self.list_container.get_children():
            self.list_container.remove(child)
            
        #Creates and add a new item for every tutorial
        for tuto in self.tutorial_list:
            item = MyTutorialListItem(tuto,self.controller)
            self.list_container.pack_start(item)
            item.show()
            if self.tutorial_list[-1] != tuto:
                sep = gtk.HSeparator()
                self.list_container.pack_start(sep)
                sep.show()

class SearchBar(gtk.HBox):
    """
    The search bar control for the Workshop My tutorial
    """
    def __init__(self,controller):
        """
        Constructor
        
        @param controller The controller to link the view to
        """
        gtk.HBox.__init__(self,False,10)
        
        self.set_border_width(5)
        self.controller = controller

        #creating and configuring the controls
        self.search_entry = gtk.Entry(400)
        
        self.search_button = gtk.Button("Go")
        
        self.separator = gtk.VSeparator()
        
        self.sort_label = gtk.Label("Sort by")
        self.sort_combo = gtk.combo_box_new_text()
        self.sort_combo.insert_text(0,"Name")
        self.sort_combo.insert_text(1,"Rating")
        self.sort_combo.set_active(0)
        
        self.selected_sorting = self.sort_combo.get_active_text()

        #Adding the controls to the view
        self.pack_start(self.search_entry,padding=5)
        self.pack_start(self.search_button,False,False,padding=10)
        self.pack_start(self.separator,False,False,padding=10)
        self.pack_start(self.sort_label,False,False,padding=5)
        self.pack_start(self.sort_combo,)

        #showing the controls
        self.search_entry.show()
        self.search_button.show()
        self.separator.show()
        self.sort_label.show()
        self.sort_combo.show()
        
        #connecting the events
        self.search_button.connect("clicked",self.controller.tutorial_query,self.search_entry)
        self.sort_combo.connect("changed",self.controller.sort_selection_changed,None)

class WorkshopDetail(gtk.VBox):
    def __init__(self,tutorial,controller):
        """
        Constructor
        
        @param tutorial The tutorial to display
        @param controller The controller to link the view with
        """
        
        #Used for string formatting
        self.title_text = '<span size="xx-large">%(title)s</span>'
        self.author_text = '<span size="large">by %(author)s</span>'
        self.desc_text = 'Description: %(description)s'
        
        self.controller = controller
        self.tutorial = tutorial
        
        gtk.VBox.__init__(self,False,10)
        self.set_border_width(10)
        
        #The first row contains the back button
        first_row = gtk.HBox(False)
        back_image = gtk.Image()
        back_image.set_from_file('arrow_back.png')
        self.back_button = gtk.Button("Back")
        self.back_button.set_image(back_image)

        first_row.pack_start(self.back_button,False,False)

        #The second row contains the activity icon, the title label,
        #the author label and the star rating
        icon = gtk.Image()
        icon.set_from_file('icon.svg')

        label_holder = gtk.VBox(False,10)

        self.title_label = gtk.Label("")
        self.author_label = gtk.Label("")
        
        #Add a small offsert for author's label alignement because it's cute
        self.author_label.set_alignment(0.05,0.5)
        self.title_label.set_alignment(0.0,0.5)

        label_holder.pack_start(self.title_label)
        label_holder.pack_start(self.author_label)

        self.rating = Rating(tutorial,controller,rating = tutorial.rating)
        
        second_row = gtk.HBox(False)
        second_row.pack_start(icon,False,False)
        second_row.pack_start(label_holder)
        second_row.pack_end(self.rating,False,False)

        #The middle of the screen contains an area for the description
        self.desc_view = gtk.TextView()
        self.desc_buff = gtk.TextBuffer()
        self.desc_buff.set_text(tutorial.description)
        self.desc_view.set_buffer(self.desc_buff)
        self.desc_view.set_editable(False)
        self.desc_view.set_wrap_mode(gtk.WRAP_WORD)
        self.desc_view.set_cursor_visible(False)
        self.desc_view.connect("realize",self.realize_cb,None)
        self.desc_view.modify_base(gtk.STATE_NORMAL, gtk.gdk.color_parse("gray") )

        #The description view contains all the extra space
        self.pack_start(first_row,False,False)
        self.pack_start(second_row,False,False)
        self.pack_start(self.desc_view)

        #show everything
        self.back_button.show()
        first_row.show()
        self.title_label.show()
        self.author_label.show()
        self.rating.show()
        label_holder.show()
        second_row.show()
        icon.show()
        self.desc_view.show()

        #set some text with markup
        self.title_label.set_markup(self.title_text % {"title":tutorial.name})
        self.author_label.set_markup(self.author_text % {"author":tutorial.author})

    def realize_cb(self,widget,data=None):
        """
        This fucntion changes the cursor over the description view
        So we see an arrow and not the insert text cursor
        """
        widget.get_window(gtk.TEXT_WINDOW_TEXT).set_cursor(gtk.gdk.Cursor(gtk.gdk.LEFT_PTR))
        
    def refresh_content(self):
        """
        Refresh the labels' text based on the tutorial object
        """
        self.title_label.set_markup(self.title_text % {"title":self.tutorial.name})
        self.author_label.set_markup(self.author_text % {"author":self.tutorial.author})
        self.desc_buff.set_text(self.tutorial.description)
        
class WorkshopListItem(gtk.Alignment):
    """
    A list item containing the details of a tutorial
    """
    def __init__(self,tutorial,controller):
        """
        Constructor
        
        @param controller The controller to link the view to
        """
        #logging.info(tutorial.updated_metadata)
        gtk.Alignment.__init__(self,0.0,0.0,1.0,1.0)
        self.tutorial = tutorial
        self.controller = controller
        self.set_border_width(10)
        
        #The table will contain everything else
        self.table = gtk.Table(3,3,False)
        self.table.set_row_spacing(1,10)
        
        #Create the controls
        self.lbl_title = gtk.Label('')
        self.lbl_title.set_alignment(0.0,0.5)
        self.title_text = '<span size="xx-large">%(title)s</span>'
        self.lbl_title.set_markup(self.title_text % {'title':tutorial.name})
        
        self.lbl_desc = gtk.Label(tutorial.description)
        self.lbl_desc.set_line_wrap(True)
        self.lbl_desc.set_alignment(0.0,0.5)
        
        self.icon = gtk.Image()
        self.icon.set_from_file('icon.svg')
        
        self.rating = Rating(tutorial,controller,tutorial.rating, True)

        #Add the controls to the table
        self.table.attach(self.icon,0,1,0,1,0,0)
        self.table.attach(self.lbl_title,1,2,0,1,yoptions=0)
        self.table.attach(self.lbl_desc,1,2,1,2,xoptions=gtk.FILL,yoptions=gtk.EXPAND)
        self.table.attach(self.rating,2,3,0,2,0,0)

        #show everything
        self.table.show()
        self.icon.show()
        self.lbl_title.show()
        self.lbl_desc.show()
        self.rating.show()

        self.add(self.table)
        

class MyTutorialListItem(WorkshopListItem):
    def __init__(self,tutorial,controller):
        WorkshopListItem.__init__(self,tutorial,controller)
        
        self.last_row = gtk.HBox(False,15)
        self.btn_launch = gtk.Button('Launch')
        self.btn_detail = gtk.Button('Details')
        self.last_row.pack_start(self.btn_launch,False,False)
        self.last_row.pack_end(self.btn_detail,False,False)
        
        self.table.attach(self.last_row,1,3,2,3,yoptions = 0)

        self.last_row.show_all()
        
        #connect the buttons
        self.btn_detail.connect("clicked",self.controller.show_details,self.tutorial)
        self.btn_launch.connect("clicked",self.controller.launch_tutorial,self.tutorial)
        
        
class MyTutorialDetail(WorkshopDetail):
    def __init__(self,tutorial,controller):
        WorkshopDetail.__init__(self,tutorial,controller)
        
        #The bottom of the screen contains the button(fourth and fifth row
        self.launch_button = gtk.Button('Launch')
        self.launch_button.get_child().set_markup(self.title_text %{"title":"Launch"})
        self.edit_button = gtk.Button('Edit')
        self.edit_button.get_child().set_markup(self.title_text %{"title":"Edit"})
        self.update_button = gtk.Button('Update')
        self.update_button.get_child().set_markup(self.title_text %{"title":"Update"})
        self.info_button = gtk.Button('Infos')
        self.info_button.get_child().set_markup(self.title_text %{"title":"Infos"})
        self.delete_button = gtk.Button('Delete')
        self.delete_button.get_child().set_markup(self.title_text %{"title":"Delete"})

        fourth_row = gtk.HBox(False,15)
        fourth_row.pack_start(self.launch_button,False,False)
        fourth_row.pack_start(self.edit_button,False,False)
        fourth_row.pack_start(self.update_button,False,False)
        fourth_row.pack_start(self.info_button,False,False)
        fourth_row.pack_end(self.delete_button,False,False)

        
        self.publish_button = gtk.Button('')
        self.publish_button.get_child().set_markup(self.title_text %{"title":"Publish"})
        self.unpublish_button = gtk.Button('')
        self.unpublish_button.get_child().set_markup(self.title_text %{"title":"Unpublish"})

        fifth_row = gtk.HBox(False,15)
        fifth_row.pack_start(self.publish_button,False,False)
        fifth_row.pack_start(self.unpublish_button,False,False)
        
        self.pack_end(fifth_row,False,False)
        self.pack_end(fourth_row,False,False)
        
        fifth_row.show_all()
        fourth_row.show_all()
        
        #connect the clicked events of the buttons
        self.back_button.connect("clicked",self.controller.back_pressed,None)
        self.publish_button.connect("clicked",self.controller.publish_tutorial,self.tutorial)
        self.unpublish_button.connect("clicked",self.controller.unpublish_tutorial,self.tutorial)
        self.launch_button.connect("clicked",self.controller.launch_tutorial,self.tutorial)
        self.edit_button.connect("clicked",self.controller.edit_tutorial,self.tutorial)
        self.update_button.connect("clicked",self.controller.update_tutorial,self.tutorial)
        self.info_button.connect("clicked",self.controller.info_tutorial,self.tutorial)
        self.delete_button.connect("clicked",self.controller.delete_tutorial,self.tutorial)

        self.controller.get_categories()