# Gramps - a GTK+/GNOME based genealogy program
#
# Copyright (C) 2001-2006  Donald N. Allingham
# Copyright (C) 2008       Gary Burton
# Copyright (C) 2010       Nick Hall
#
# 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#

# $Id$

"""
Note View.
"""
#-------------------------------------------------------------------------
#
# python modules
#
#-------------------------------------------------------------------------
from gen.ggettext import gettext as _
import logging
_LOG = logging.getLogger(".plugins.noteview")

#-------------------------------------------------------------------------
#
# GTK/Gnome modules
#
#-------------------------------------------------------------------------
import gtk

#-------------------------------------------------------------------------
#
# gramps modules
#
#-------------------------------------------------------------------------
from gui.views.listview import ListView
from gui.views.treemodels import NoteModel
from gen.utils.referent import get_note_referents
from gen.errors import WindowActiveError
from gui.views.bookmarks import NoteBookmarks
from gen.config import config
from gen.lib import Note
from gui.ddtargets import DdTargets
from gui.dialog import ErrorDialog
from gui.filters.sidebar import NoteSidebarFilter
from gui.editors import EditNote, DeleteNoteQuery
from gui.merge import MergeNote
from gen.plug import CATEGORY_QR_NOTE

#-------------------------------------------------------------------------
#
# NoteView
#
#-------------------------------------------------------------------------
class NoteView(ListView):
    """
    Noteview, a normal flat listview for the notes
    """
    COL_PREVIEW = 0
    COL_ID = 1
    COL_TYPE = 2
    COL_TAGS = 3
    COL_CHAN = 4
    
    COLUMN_NAMES = [
        _('Preview'),
        _('ID'),
        _('Type'),
        _('Tags'),
        _('Last Changed')
        ]
    # default setting with visible columns, order of the col, and their size
    CONFIGSETTINGS = (
        ('columns.visible', [COL_PREVIEW, COL_ID, COL_TYPE]),
        ('columns.rank', [COL_PREVIEW, COL_ID, COL_TYPE, COL_TAGS, COL_CHAN]),
        ('columns.size', [350, 75, 100, 100, 100]))

    ADD_MSG     = _("Add a new note")
    EDIT_MSG    = _("Edit the selected note")
    DEL_MSG     = _("Delete the selected note")
    MERGE_MSG   = _("Merge the selected notes")
    FILTER_TYPE = "Note"
    QR_CATEGORY = CATEGORY_QR_NOTE

    def __init__(self, pdata, dbstate, uistate, nav_group=0):

        signal_map = {
            'note-add'     : self.row_add,
            'note-update'  : self.row_update,
            'note-delete'  : self.row_delete,
            'note-rebuild' : self.object_build,
            'tag-update'   : self.tag_updated
        }

        ListView.__init__(
            self, _('Notes'), pdata, dbstate, uistate, NoteView.COLUMN_NAMES,
            len(NoteView.COLUMN_NAMES), NoteModel, signal_map,
            dbstate.db.get_note_bookmarks(),
            NoteBookmarks, nav_group,
            filter_class=NoteSidebarFilter,
            multiple=True)

        self.func_list.update({
            '<CONTROL>J' : self.jump,
            '<CONTROL>BackSpace' : self.key_delete,
        })

        self.additional_uis.append(self.additional_ui())

    def navigation_type(self):
        return 'Note'

    def get_bookmarks(self):
        """
        Return the bookmark object
        """
        return self.dbstate.db.get_note_bookmarks()

    def drag_info(self):
        """
        Indicate that the drag type is an EVENT
        """
        return DdTargets.NOTE_LINK

    def get_stock(self):
        """
        Use the gramps-event stock icon
        """
        return 'gramps-notes'

    def additional_ui(self):
        """
        Defines the UI string for UIManager
        """
        return '''<ui>
          <menubar name="MenuBar">
            <menu action="FileMenu">
              <placeholder name="LocalExport">
                <menuitem action="ExportTab"/>
              </placeholder>
            </menu>
            <menu action="BookMenu">
              <placeholder name="AddEditBook">
                <menuitem action="AddBook"/>
                <menuitem action="EditBook"/>
              </placeholder>
            </menu>
            <menu action="GoMenu">
              <placeholder name="CommonGo">
                <menuitem action="Back"/>
                <menuitem action="Forward"/>
                <separator/>
              </placeholder>
            </menu>
            <menu action="EditMenu">
              <placeholder name="CommonEdit">
                <menuitem action="Add"/>
                <menuitem action="Edit"/>
                <menuitem action="Remove"/>
                <menuitem action="Merge"/>
              </placeholder>
              <menuitem action="FilterEdit"/>
            </menu>
          </menubar>
          <toolbar name="ToolBar">
            <placeholder name="CommonNavigation">
              <toolitem action="Back"/>  
              <toolitem action="Forward"/>  
            </placeholder>
            <placeholder name="CommonEdit">
              <toolitem action="Add"/>
              <toolitem action="Edit"/>
              <toolitem action="Remove"/>
              <toolitem action="Merge"/>
            </placeholder>
          </toolbar>
          <popup name="Popup">
            <menuitem action="Back"/>
            <menuitem action="Forward"/>
            <separator/>
            <menuitem action="Add"/>
            <menuitem action="Edit"/>
            <menuitem action="Remove"/>
            <menuitem action="Merge"/>
            <separator/>
            <menu name="QuickReport" action="QuickReport">
              <menuitem action="Dummy"/>
            </menu>
          </popup>
        </ui>'''

    def dummy_report(self, obj):
        """ For the xml UI definition of popup to work, the submenu 
            Quick Report must have an entry in the xml
            As this submenu will be dynamically built, we offer a dummy action
        """
        pass

    def define_actions(self):
        ListView.define_actions(self)
        self._add_action('FilterEdit', None, _('Note Filter Editor'),
                         callback=self.filter_editor,)
        self._add_action('QuickReport', None, _("Quick View"), None, None, None)
        self._add_action('Dummy', None, '  ', None, None, self.dummy_report)

    def set_active(self):
        """
        Called when the page is displayed.
        """
        ListView.set_active(self)
        self.uistate.viewmanager.tags.tag_enable()

    def set_inactive(self):
        """
        Called when the page is no longer displayed.
        """
        ListView.set_inactive(self)
        self.uistate.viewmanager.tags.tag_disable()

    def get_handle_from_gramps_id(self, gid):
        obj = self.dbstate.db.get_note_from_gramps_id(gid)
        if obj:
            return obj.get_handle()
        else:
            return None

    def add(self, obj):
        try:
            EditNote(self.dbstate, self.uistate, [], Note())
        except WindowActiveError:
            pass

    def remove(self, obj):
        self.remove_selected_objects()

    def remove_object_from_handle(self, handle):
        the_lists = get_note_referents(handle, self.dbstate.db)
        object = self.dbstate.db.get_note_from_handle(handle)
        query = DeleteNoteQuery(self.dbstate, self.uistate, object, the_lists)
        is_used = any(the_lists)
        return (query, is_used, object)

    def edit(self, obj):
        for handle in self.selected_handles():
            note = self.dbstate.db.get_note_from_handle(handle)
            try:
                EditNote(self.dbstate, self.uistate, [], note)
            except WindowActiveError:
                pass

    def merge(self, obj):
        """
        Merge the selected notes.
        """
        mlist = self.selected_handles()

        if len(mlist) != 2:
            msg = _("Cannot merge notes.")
            msg2 = _("Exactly two notes must be selected to perform a merge. "
                    "A second note can be selected by holding down the "
                    "control key while clicking on the desired note.")
            ErrorDialog(msg, msg2)
        else:
            MergeNote(self.dbstate, self.uistate, mlist[0], mlist[1])

    def tag_updated(self, handle_list):
        """
        Update tagged rows when a tag color changes.
        """
        all_links = set([])
        for tag_handle in handle_list:
            links = set([link[1] for link in
                         self.dbstate.db.find_backlink_handles(tag_handle,
                                                    include_classes='Note')])
            all_links = all_links.union(links)
        self.row_update(list(all_links))

    def add_tag(self, transaction, note_handle, tag_handle):
        """
        Add the given tag to the given note.
        """
        note = self.dbstate.db.get_note_from_handle(note_handle)
        note.add_tag(tag_handle)
        self.dbstate.db.commit_note(note, transaction)

    def get_default_gramplets(self):
        """
        Define the default gramplets for the sidebar and bottombar.
        """
        return (("Note Filter",),
                ("Note Backlinks",))