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# -*- coding: utf-8 -*-

# Copyright 2008 Jaap Karssenberg <pardus@cpan.org>

'''This module contains the notebook dialog which is used for the
"open another notebook" action and which is shown if you start zim without
argument. The dialog directly modifies the notebook list obtained from
zim.notebook.get_notebook_list(). A special dropdown allows settign the
special entry for the default notebook which will be openend directly
the next time zim is started without arguments.

import gtk
import pango
import logging

from zim.fs import *
from zim.notebook import get_notebook_list, init_notebook
from zim.config import data_file
from zim.gui.widgets import Dialog, IconButton

logger = logging.getLogger('zim.gui.notebookdialog')

OPEN_COL = 0  # column with boolean if notebook is open alreadys
NAME_COL = 1  # column with notebook name
PATH_COL = 2  # column with the directory path

def prompt_notebook():
      '''Prompts the NotebookDialog and returns the result or None.
      As a special case for first time usage it immediatly prompts for
      the notebook location without showing the notebook list.
      list = get_notebook_list()
      if not list:
            logger.debug('First time usage - prompt for notebook folder')
            fields = AddNotebookDialog(ui=None).run()
            if fields:
                  dir = Dir(fields['folder'])
                  init_notebook(dir, name=fields['name'])
                  return dir
                  return None # User cancelled the dialog ?
            # Multiple notebooks defined and no default
            return NotebookDialog(ui=None).run()

00053 class NotebookTreeModel(gtk.ListStore):
      '''TreeModel that wraps a notebook list given as a ConfigList.
      It exposes 3 columns:

            * bool, True is the notebook is opened already
            * str, name of the notebook
            * str, dir path of the notebook

      To get the correct column numbers the constants OPEN_COL, NAME_COL and
      PATH_COL are avaialble.

00065       def __init__(self, notebooklist=None):
            '''Constructor. If "notebooklist" is None, the default list as
            provided by zim.notebook.get_notebook_list() is used.
            gtk.ListStore.__init__(self, bool, str, str) # OPEN_COL, NAME_COL, PATH_COL

            if notebooklist is None:
                  self.notebooklist = get_notebook_list()
                  self.notebooklist = notebooklist

            self._loading = True
            for name, path in self.notebooklist.get_names():
                  self.append((False, name, path))
            self._loading = False

00081       def get_iter_for_notebook(self, uri):
            '''Returns the TreeIter for a notebook path or None'''
            assert uri.startswith('file://')
            for row in self:
                  if row[PATH_COL] == uri:
                        return row.iter
                  return None

00090       def append_notebook(self, uri, name=None):
            '''Append a notebook to the list. If the name is not specified
            it will be looked up by reading the config file of the notebook.
            Returns an iter for this notebook in the list.
            assert uri.startswith('file://')
            if name is None:
                  name = self.notebooklist.get_name(uri)
            self.append((False, name, uri))
            return len(self) - 1 # iter

00103       def get_iter_for_default(self):
            '''Returns a TreeIter for the default notebook or None'''
            default = self.notebooklist.default
            if default:
                  return self.get_iter_for_notebook(default)
                  return None

00111       def set_default_from_iter(self, iter):
            '''Set the default notebook using a TreeIter,
            set to None to reset the default.
            if iter is None:
                  self.notebooklist.default = None
                  self.notebooklist.default = unicode(self[iter][PATH_COL])

00121       def write(self):
            '''Save the notebook list.'''
            if self._loading:
                  return # ignore signals while first populating the list

            uris = [unicode(row[PATH_COL]) for row in self]
            self.notebooklist[:] = uris

class NotebookTreeView(gtk.TreeView):

      def __init__(self, model=None):
            # TODO: add logic to flag open notebook italic - needs daemon
            if model is None:
                  model = NotebookTreeModel()
            gtk.TreeView.__init__(self, model)

            cell_renderer = gtk.CellRendererText()
            cell_renderer.set_property('ellipsize', pango.ELLIPSIZE_END)
            column = gtk.TreeViewColumn(_('Notebook'), cell_renderer, text=NAME_COL)
                  # T: Column heading in 'open notebook' dialog

00150 class NotebookComboBox(gtk.ComboBox):
      '''Combobox showing the a list of notebooks'''

00153       def __init__(self, model=None, current=None):
            '''Constructor, "model" should be a NotebookTreeModel or None to
            use the default list. The notebook 'current' will be shown in the
            widget - if it is not in the list it wil be added. Otherwise the default
            will be shown.
            if model is None:
                  model = NotebookTreeModel()
            gtk.ComboBox.__init__(self, model)
            cell_renderer = gtk.CellRendererText()
            self.pack_start(cell_renderer, False)
            self.set_attributes(cell_renderer, text=NAME_COL)

            if current:
                  self.set_notebook(current, append=True)

00171       def set_default_active(self):
            '''Select the default notebook in the combobox'''
            iter = self.get_model().get_iter_for_default()
            if iter is None:

00179       def set_notebook(self, uri, append=False):
            '''Select a specific notebook in the combobox.
            If 'append' is True it will appended if it didn't exist yet
            in the notebook list.
            if isinstance(uri, basestring):
                  assert uri.startswith('file://')
                  assert hasattr(uri, 'uri')
                  uri = uri.uri

            model = self.get_model()
            iter = model.get_iter_for_notebook(uri)
            if iter is None:
                  if append:
                        iter = model.append_notebook(uri)

      def get_notebook(self):
            iter = self.get_active()
            if iter == -1:
                  return None
                  model = self.get_model()
                  return model[iter][PATH_COL]

00210 class DefaultNotebookComboBox(NotebookComboBox):
      '''Combobox which sets the default notebook'''

      def __init__(self, model=None):
            NotebookComboBox.__init__(self, model, current=None)
            self.connect('changed', self.__class__.do_changed)

      def do_changed(self):
            # Set default if triggered by user action
            model = self.get_model()
            iter = self.get_active()
            if iter >= 0:

00227 class NotebookDialog(Dialog):
      '''Dialog which allows the user to select a notebook from a list
      of defined notebooks.

      Can either be run modal using run(), in which case the selected
      notebook is returned (or None when the dialog is cancelled).
      To run this dialog non-model a callback needs to be specified
      which will be called with the path for the selected notebook.

      def __init__(self, ui, callback=None):
            Dialog.__init__(self, ui, _('Open Notebook')) # T: dialog title
            # TODO set button to "OPEN" instead of "OK"
            self.callback = callback
            self.set_default_size(500, 400)

            # show some art work in an otherwise boring dialog
            path = data_file('globe_banner_small.png').path
            image = gtk.Image()
            image.set_from_file(path) # new_from_file not in 2.6
            align = gtk.Alignment(0,0.5, 0,0)
            self.vbox.pack_start(align, False)

            # split between treeview and vbuttonbox
            hbox = gtk.HBox(spacing=12)

            # add notebook list - open notebook on clicking a row
            self.treeview = NotebookTreeView()
                  'row-activated', lambda *a: self.response(gtk.RESPONSE_OK))

            swindow = gtk.ScrolledWindow()
            swindow.set_policy(gtk.POLICY_NEVER, gtk.POLICY_AUTOMATIC)

            # add buttons for modifying the treeview
            vbbox = gtk.VButtonBox()
            hbox.pack_start(vbbox, False)
            add_button = gtk.Button(stock='gtk-add')
            add_button.connect('clicked', self.do_add_notebook)
            #~ edit_button = gtk.Button(stock='gtk-edit')
            #~ edit_button.connect('clicked', self.do_edit_notebook)
            rm_button = gtk.Button(stock='gtk-remove')
            rm_button.connect('clicked', self.do_remove_notebook)
            #~ for b in (add_button, edit_button, rm_button):
            for b in (add_button, rm_button):
                  b.set_alignment(0.0, 0.5)
            # FIXME buttons for "up" and "down" ?

            # add dropdown to select default
            self.combobox = DefaultNotebookComboBox(self.treeview.get_model())

            # clear button de-selects any item in the combobox
            clear_button = IconButton('gtk-clear')
            clear_button.connect('clicked', lambda o: self.combobox.set_active(-1))

            hbox = gtk.HBox(spacing=5)
            hbox.pack_start(gtk.Label(_('Default notebook')+': '), False)
                  # T: Input label in 'open notebook' dialog
            hbox.pack_start(self.combobox, False)
            hbox.pack_start(clear_button, False)
            self.vbox.pack_start(hbox, False)

00297       def show_all(self):
            # We focus on the treeview so that the user can start typing the
            # notebook name directly when the dialog opens.

00303       def do_response_ok(self):
            model, iter = self.treeview.get_selection().get_selected()
            model.write() # List will be read by open_notebook again..
            if iter is None:
                  return False
                  path = unicode(model[iter][PATH_COL])
                  self.result = path
                  if self.callback:
                  return True

      def do_add_notebook(self, *a):
            fields = AddNotebookDialog(self).run()
            if fields:
                  dir = Dir(fields['folder'])
                  init_notebook(dir, name=fields['name'])
                  model = self.treeview.get_model()
                  model.append_notebook(dir.uri, name=fields['name'])

      #~ def do_edit_notebook(self, *a):
            #~ model, iter = self.treeview.get_selection().get_selected()
            #~ if iter is None:
                  #~ return
            #~ name = unicode(model[iter][NAME_COL])
            #~ folder = unicode(model[iter][PATH_COL])
            #~ properties = EditNotebookDialog(self, name, folder).run()
            #~ if properties:
                  #~ model.set(iter,
                        #~ OPEN_COL, False,
                        #~ NAME_COL, properties['name'],
                        #~ PATH_COL, properties['folder'] )
                  #~ model.write()

      def do_remove_notebook(self, *a):
            model, iter = self.treeview.get_selection().get_selected()
            # explicitly _no_ model.write()

class AddNotebookDialog(Dialog):

      title = _('Add Notebook') # T: Dialog window title
      text = _('''\
Please select a name and a folder for the notebook.

To create a new notebook you need to select an empty folder.
Of course you can also select an existing zim notebook folder.
''') # T: help text in the 'Add Notebook' dialog

      def __init__(self, ui, name=None, folder=None):
            Dialog.__init__(self, ui, self.title)
            if name is None and folder is None:
                  name = 'Notes'
                  folder = '~/Notes'
            if self.text:
                  ('name', 'string', _('Name'), name), # T: input field in 'Add Notebook' dialog
                  ('folder', 'dir', _('Folder'), folder), # T: input field in 'Add Notebook' dialog

      def do_response_ok(self):
            name = self.get_field('name')
            folder = self.get_field('folder')
            if name and folder:
                  self.result = {'name': name, 'folder': folder}
                  return True
                  return False

class EditNotebookDialog(AddNotebookDialog):

      title = _('Edit Notebook') # T: Dialog window title
      text = None

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