# Copyright (C) 2006, Martin Sevior
# Copyright (C) 2006-2007, Marc Maurer <uwog@uwog.net>
# Copyright (C) 2007, One Laptop Per Child
#
# 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
from gettext import gettext as _
import logging
import os
import time

import abiword
import gtk

from sugar.graphics.icon import Icon
from sugar.graphics.toolbutton import ToolButton
from sugar.graphics.toggletoolbutton import ToggleToolButton
from sugar.graphics.combobox import ComboBox
from sugar.graphics.colorbutton import ColorToolButton
from sugar.graphics.toolcombobox import ToolComboBox
from sugar.graphics.objectchooser import ObjectChooser
from sugar.graphics import iconentry
from sugar.activity.activity import ActivityToolbar
from sugar.activity.activity import EditToolbar
from sugar.graphics.menuitem import MenuItem
from sugar.datastore import datastore
from sugar import mime
import sugar.profile

import dbus

logger = logging.getLogger('write-activity')

#ick
TOOLBAR_ACTIVITY = 0
TOOLBAR_EDIT = 1
TOOLBAR_TEXT = 2
TOOLBAR_IMAGE = 3
TOOLBAR_TABLE = 4
TOOLBAR_VIEW = 5

class WriteActivityToolbarExtension:

    # file mime type, abiword exporter properties, drop down name, journal entry postfix
    _EXPORT_FORMATS = [['application/rtf', _('Rich Text (RTF)'), _('RTF'), ""],
        ['text/html', _('Hypertext (HTML)'), _('HTML'), "html4:yes; declare-xml:no; embed-css:yes; embed-images:yes;"],
        ['text/plain', _('Plain Text (TXT)'), _('TXT'), ""]]

    def __init__(self, activity, toolbox, abiword_canvas):

        self._activity = activity
        self._abiword_canvas = abiword_canvas
        self._activity_toolbar = toolbox.get_activity_toolbar()
        self._keep_palette = self._activity_toolbar.keep.get_palette()

        # hook up the export formats to the Keep button
        for i, f in enumerate(self._EXPORT_FORMATS):
            menu_item = MenuItem(f[1])
            menu_item.connect('activate', self._export_as_cb, f[0], f[2], f[3])
            self._keep_palette.menu.append(menu_item)
            menu_item.show()

    def _export_as_cb(self, menu_item, mimetype, jpostfix, exp_props):
        logger.debug('exporting file, mimetype: %s, exp_props: %s', mimetype, exp_props);

        # special case HTML export to set the activity name as the HTML title
        if mimetype == "text/html":
            exp_props += " title:" + self._activity.metadata['title'] + ';';

        # create a new journal item
        fileObject = datastore.create()
        act_meta = self._activity.metadata
        fileObject.metadata['title'] = act_meta['title'] + ' (' + jpostfix + ')';
        fileObject.metadata['title_set_by_user'] = act_meta['title_set_by_user']
        fileObject.metadata['mime_type'] = mimetype
        fileObject.metadata['fulltext'] = \
            self._abiword_canvas.get_content(extension_or_mimetype=".txt")[:3000]

        fileObject.metadata['icon-color'] = act_meta['icon-color']
        fileObject.metadata['activity'] = act_meta['activity']
        fileObject.metadata['keep'] = act_meta['keep']

# TODO: Activity class should provide support for preview, see #5119
#        self._activity.take_screenshot()
#        if self._activity._preview:
#            preview = self._activity._get_preview()
#            fileObject.metadata['preview'] = dbus.ByteArray(preview)

        fileObject.metadata['share-scope'] = act_meta['share-scope']

        # write out the document contents in the requested format
        fileObject.file_path = os.path.join(self._activity.get_activity_root(), 'instance', '%i' % time.time())
        self._abiword_canvas.save('file://' + fileObject.file_path, mimetype, exp_props)
       
        # store the journal item
        datastore.write(fileObject, transfer_ownership=True)
        fileObject.destroy()
        del fileObject

class WriteEditToolbar(EditToolbar):

    def __init__(self, toolbox, abiword_canvas, text_toolbar):

        EditToolbar.__init__(self)

        self._toolbox = toolbox
        self._abiword_canvas = abiword_canvas
        self._text_toolbar = text_toolbar

        # connect existing buttons
        self.undo.set_sensitive(False)
        self.redo.set_sensitive(False)
        self.undo.connect('clicked', self._undo_cb)
        self.redo.connect('clicked', self._redo_cb)
        self.copy.connect('clicked', self._copy_cb)
        self.paste.connect('clicked', self._paste_cb)
        self._abiword_canvas.connect("can-undo", self._can_undo_cb)
        self._abiword_canvas.connect("can-redo", self._can_redo_cb)

        # make expanded non-drawn visible separator to make the search stuff right-align
        separator = gtk.SeparatorToolItem()
        separator.props.draw = False
        separator.set_expand(True)
        self.insert(separator, -1)
        separator.show()

        # setup the search options
        self._search_entry = iconentry.IconEntry()
        self._search_entry.set_icon_from_name(iconentry.ICON_ENTRY_PRIMARY,
                                              'system-search')
        self._search_entry.connect('activate', self._search_entry_activated_cb)
        self._search_entry.connect('changed', self._search_entry_changed_cb)
        self._search_entry.add_clear_button();
        self._add_widget(self._search_entry, expand=True)

        self._findprev = ToolButton('go-previous')
        self._findprev.set_tooltip(_('Find previous'))
        self.insert(self._findprev, -1)
        self._findprev.show()
        self._findprev.connect('clicked', self._findprev_cb);

        self._findnext = ToolButton('go-next')
        self._findnext.set_tooltip(_('Find next'))
        self.insert(self._findnext, -1)
        self._findnext.show()
        self._findnext.connect('clicked', self._findnext_cb);

        # set the initial state of the search controls
        # note: we won't simple call self._search_entry_changed_cb
        # here, as that will call into the abiword_canvas, which
        # is not mapped on screen here, causing the set_find_string
        # call to fail
        self._findprev.set_sensitive(False)
        self._findnext.set_sensitive(False)

    def _undo_cb(self, button):
        self._abiword_canvas.undo()

    def _redo_cb(self, button):
        self._abiword_canvas.redo()

    def _copy_cb(self, button):
        self._abiword_canvas.copy()

    def _paste_cb(self, button):
        self._abiword_canvas.paste()

    def _can_undo_cb(self, canvas, can_undo):
        self.undo.set_sensitive(can_undo)

    def _can_redo_cb(self, canvas, can_redo):
        self.redo.set_sensitive(can_redo)

    def _search_entry_activated_cb(self, entry):
        logger.debug('_search_entry_activated_cb')
        if not self._search_entry.props.text:
            return

        # find the next entry
        id = self._text_toolbar.get_text_selected_handler();
        self._abiword_canvas.handler_block(id)
        self._abiword_canvas.find_next(False)
        self._abiword_canvas.handler_unblock(id)

    def _search_entry_changed_cb(self, entry):
        logger.debug('_search_entry_changed_cb search for \'%s\'', self._search_entry.props.text)
   
        if not self._search_entry.props.text:
            self._search_entry.activate()
            # set the button contexts
            self._findprev.set_sensitive(False)
            self._findnext.set_sensitive(False)
            return

        self._abiword_canvas.set_find_string(self._search_entry.props.text)

        # set the button contexts
        self._findprev.set_sensitive(True)
        self._findnext.set_sensitive(True)

        # immediately start seaching
        id = self._text_toolbar.get_text_selected_handler();
        self._abiword_canvas.handler_block(id)
        self._abiword_canvas.find_next(True)
        self._abiword_canvas.handler_unblock(id)

    def _findprev_cb(self, button):
        logger.debug('_findprev_cb')
        if self._search_entry.props.text:
            id = self._text_toolbar.get_text_selected_handler();
            self._abiword_canvas.handler_block(id)
            self._abiword_canvas.find_prev()
            self._abiword_canvas.handler_unblock(id)
        else:
            logger.debug('nothing to search for!')

    def _findnext_cb(self, button):
        logger.debug('_findnext_cb')
        if self._search_entry.props.text:
            id = self._text_toolbar.get_text_selected_handler();
            self._abiword_canvas.handler_block(id)
            self._abiword_canvas.find_next(False)
            self._abiword_canvas.handler_unblock(id)
        else:
            logger.debug('nothing to search for!')

    # bad foddex! this function was copied from sugar's activity.py
    def _add_widget(self, widget, expand=False):
        tool_item = gtk.ToolItem()
        tool_item.set_expand(expand)

        tool_item.add(widget)
        widget.show()

        self.insert(tool_item, -1)
        tool_item.show()

class TextToolbar(gtk.Toolbar):
    _ACTION_ALIGNMENT_LEFT = 0
    _ACTION_ALIGNMENT_CENTER = 1
    _ACTION_ALIGNMENT_RIGHT = 2
    _ACTION_ALIGNMENT_JUSTIFY = 3

    def __init__(self, toolbox, abiword_canvas):
        self._colorseldlg = None

        gtk.Toolbar.__init__(self)

        self._toolbox = toolbox
        self._abiword_canvas = abiword_canvas

        self._bold = ToggleToolButton('format-text-bold')
        self._bold.set_tooltip(_('Bold'))
        self._bold_id = self._bold.connect('clicked', self._bold_cb)
        self._abiword_canvas.connect('bold', self._isBold_cb)
        self.insert(self._bold, -1)
        self._bold.show()

        self._italic = ToggleToolButton('format-text-italic')
        self._italic.set_tooltip(_('Italic'))
        self._italic_id = self._italic.connect('clicked', self._italic_cb)
        self._abiword_canvas.connect('italic', self._isItalic_cb)
        self.insert(self._italic, -1)
        self._italic.show()

        self._underline = ToggleToolButton('format-text-underline')
        self._underline.set_tooltip(_('Underline'))
        self._underline_id = self._underline.connect('clicked', self._underline_cb)
        self._abiword_canvas.connect('underline', self._isUnderline_cb)
        self.insert(self._underline, -1)
        self._underline.show()

        self._text_color = ColorToolButton()
        self._text_color_id = self._text_color.connect('color-set', self._text_color_cb)
        tool_item = gtk.ToolItem()
        tool_item.add(self._text_color)
        self.insert(tool_item, -1)
        tool_item.show_all()

        separator = gtk.SeparatorToolItem()
        separator.set_draw(True)
        separator.show()
        self.insert(separator, -1)

        self._font_size_icon = Icon(icon_name="format-text-size", icon_size=gtk.ICON_SIZE_LARGE_TOOLBAR)
        tool_item = gtk.ToolItem()
        tool_item.add(self._font_size_icon)
        self.insert(tool_item, -1)
        tool_item.show_all()

        self._font_size_combo = ComboBox()
        self._font_sizes = ['8', '9', '10', '11', '12', '14', '16', '20', '22', '24', '26', '28', '36', '48', '72']
        self._font_size_changed_id = self._font_size_combo.connect('changed', self._font_size_changed_cb)
        for i, s in enumerate(self._font_sizes):
            self._font_size_combo.append_item(i, s, None)
            if s == '12':
                self._font_size_combo.set_active(i)
        tool_item = ToolComboBox(self._font_size_combo)
        self.insert(tool_item, -1);
        tool_item.show()

        self._has_custom_fonts = False

        self._font_combo = ComboBox()
        self._fonts = sorted(self._abiword_canvas.get_font_names())
        self._fonts_changed_id = self._font_combo.connect('changed', self._font_changed_cb)
        for i, f in enumerate(self._fonts):
            self._font_combo.append_item(i, f, None)
            if f == 'Times New Roman':
                self._font_combo.set_active(i)
        tool_item = ToolComboBox(self._font_combo)
        self.insert(tool_item, -1);
        tool_item.show()

        separator = gtk.SeparatorToolItem()
        separator.set_draw(True)
        self.insert(separator, -1)
        separator.show()

        self._alignment = ComboBox()
        self._alignment.append_item(self._ACTION_ALIGNMENT_LEFT, None,
                                    'format-justify-left')
        self._alignment.append_item(self._ACTION_ALIGNMENT_CENTER, None,
                                    'format-justify-center')
        self._alignment.append_item(self._ACTION_ALIGNMENT_RIGHT, None,
                                    'format-justify-right')
        self._alignment.append_item(self._ACTION_ALIGNMENT_JUSTIFY, None,
                                    'format-justify-fill')
        self._alignment_changed_id = \
            self._alignment.connect('changed', self._alignment_changed_cb)
        tool_item = ToolComboBox(self._alignment)
        self.insert(tool_item, -1);
        tool_item.show()

        self._abiword_canvas.connect('color', self._color_cb)

        self._abiword_canvas.connect('font-size', self._font_size_cb)
        self._abiword_canvas.connect('font-family', self._font_family_cb)

        self._abiword_canvas.connect('left-align', self._isLeftAlign_cb)
        self._abiword_canvas.connect('center-align', self._isCenterAlign_cb)
        self._abiword_canvas.connect('right-align', self._isRightAlign_cb)
        self._abiword_canvas.connect('justify-align', self._isJustifyAlign_cb)

        self._text_selected_handler = self._abiword_canvas.connect('text-selected', self._text_selected_cb)

    def get_text_selected_handler(self):
        return self._text_selected_handler

    def _add_widget(self, widget, expand=False):
        tool_item = gtk.ToolItem()
        tool_item.set_expand(expand)

        tool_item.add(widget)
        widget.show()

        self.insert(tool_item, -1)
        tool_item.show()

    def setToggleButtonState(self,button,b,id):
        button.handler_block(id)
        button.set_active(b)
        button.handler_unblock(id)

    def _bold_cb(self, button):
        self._abiword_canvas.toggle_bold()

    def _isBold_cb(self, abi, b):
        self.setToggleButtonState(self._bold,b,self._bold_id)

    def _italic_cb(self, button):
        self._abiword_canvas.toggle_italic()

    def _isItalic_cb(self, abi, b):
        self.setToggleButtonState(self._italic, b, self._italic_id)

    def _underline_cb(self, button):
        self._abiword_canvas.toggle_underline()

    def _isUnderline_cb(self, abi, b):
        self.setToggleButtonState(self._underline, b, self._underline_id)

    def _color_cb(self, abi, r, g, b):
        self._text_color.set_color(gtk.gdk.Color(r * 256, g * 256, b * 256))

    def _text_color_cb(self, button):
        newcolor = self._text_color.get_color()
        self._abiword_canvas.set_text_color(int(newcolor.red / 256.0), 
                                            int(newcolor.green / 256.0), 
                                            int(newcolor.blue / 256.0))

    def _font_size_cb(self, abi, size):
        for i, s in enumerate(self._font_sizes):
            if int(s) == int(size):
                self._font_size_combo.handler_block(self._font_size_changed_id)
                self._font_size_combo.set_active(i)
                self._font_size_combo.handler_unblock(self._font_size_changed_id)
                break;

    def _font_size_changed_cb(self, combobox):
        if self._font_size_combo.get_active() != -1:
            logger.debug('Setting font size: %d', int(self._font_sizes[self._font_size_combo.get_active()]))
            self._abiword_canvas.set_font_size(self._font_sizes[self._font_size_combo.get_active()])

    def _font_family_cb(self, abi, font_family):
        font_index = -1

        # search for the font name in our font list
        for i, f in enumerate(self._fonts):
            if f == font_family:
                font_index = i
                break;

        # if we don't know this font yet, then add it (temporary) to the list
        if font_index == -1:
            logger.debug('Font not found in font list: %s', font_family)
            if not self._has_custom_fonts:
                # add a separator to seperate the non-available fonts from
                # the available ones
                self._fonts.append('') # ugly
                self._font_combo.append_separator()
                self._has_custom_fonts = True
            # add the new font
            self._fonts.append(font_family)
            self._font_combo.append_item(0, font_family, None)
            # see how many fonts we have now, so we can select the last one
            model = self._font_combo.get_model()
            num_children = model.iter_n_children(None)
            logger.debug('Number of fonts in the list: %d', num_children)
            font_index = num_children-1

        # activate the found font
        if (font_index > -1):
            self._font_combo.handler_block(self._fonts_changed_id)
            self._font_combo.set_active(font_index)
            self._font_combo.handler_unblock(self._fonts_changed_id)

    def _font_changed_cb(self, combobox):
        if self._font_combo.get_active() != -1:
            logger.debug('Setting font name: %s', self._fonts[self._font_combo.get_active()])
            self._abiword_canvas.set_font_name(self._fonts[self._font_combo.get_active()])

    def _alignment_changed_cb(self, combobox):
        if self._alignment.get_active() == self._ACTION_ALIGNMENT_LEFT:
            self._abiword_canvas.align_left()
        elif self._alignment.get_active() == self._ACTION_ALIGNMENT_CENTER:
            self._abiword_canvas.align_center()
        elif self._alignment.get_active() == self._ACTION_ALIGNMENT_RIGHT:
            self._abiword_canvas.align_right()
        elif self._alignment.get_active() == self._ACTION_ALIGNMENT_JUSTIFY:
            self._abiword_canvas.align_justify()
        else:
            raise ValueError, 'Unknown option in alignment combobox.'

    def _update_alignment_icon(self, index):
        self._alignment.handler_block(self._alignment_changed_id)
        try:
            self._alignment.set_active(index)
        finally:
            self._alignment.handler_unblock(self._alignment_changed_id)

    def _isLeftAlign_cb(self, abi, b):
        if b:
            self._update_alignment_icon(self._ACTION_ALIGNMENT_LEFT)

    def _isCenterAlign_cb(self, abi, b):
        if b:
            self._update_alignment_icon(self._ACTION_ALIGNMENT_CENTER)

    def _isRightAlign_cb(self, abi, b):
        if b:
            self._update_alignment_icon(self._ACTION_ALIGNMENT_RIGHT)

    def _isJustifyAlign_cb(self, abi, b):
        if b:
            self._update_alignment_icon(self._ACTION_ALIGNMENT_JUSTIFY)

    def _text_selected_cb(self, abi, b):
        if b:
            self._toolbox.set_current_toolbar(TOOLBAR_TEXT)
            self._abiword_canvas.grab_focus() # hack: bad toolbox, bad!

class ImageToolbar(gtk.Toolbar):
    def __init__(self, toolbox, abiword_canvas, parent):
        gtk.Toolbar.__init__(self)

        self._toolbox = toolbox
        self._abiword_canvas = abiword_canvas
        self._parent = parent

        self._image = ToolButton('insert-image')
        self._image.set_tooltip(_('Insert Image'))
        self._image_id = self._image.connect('clicked', self._image_cb)
        self.insert(self._image, -1)
        self._image.show()

        self._abiword_canvas.connect('image-selected', self._image_selected_cb)

    def _image_cb(self, button):
        chooser = ObjectChooser(_('Choose image'), self._parent,
                                gtk.DIALOG_MODAL | gtk.DIALOG_DESTROY_WITH_PARENT,
                                what_filter=mime.GENERIC_TYPE_IMAGE)
        try:
            result = chooser.run()
            if result == gtk.RESPONSE_ACCEPT:
                logging.debug('ObjectChooser: %r' % chooser.get_selected_object())
                jobject = chooser.get_selected_object()
                if jobject and jobject.file_path:
                    self._abiword_canvas.insert_image(jobject.file_path, True)
        finally:
            chooser.destroy()
            del chooser
 
    def _image_selected_cb(self, abi, b):
        if b:
            self._toolbox.set_current_toolbar(TOOLBAR_IMAGE)
            self._abiword_canvas.grab_focus() # hack: bad toolbox, bad!

class TableToolbar(gtk.Toolbar):
    def __init__(self, toolbox, abiword_canvas):
        gtk.Toolbar.__init__(self)

        self._toolbox = toolbox
        self._abiword_canvas = abiword_canvas

        self._table = abiword.TableCreator()
        self._table.set_labels(_('Table'), _('Cancel'))
        self._table_id = self._table.connect('selected', self._table_cb)
        self._table.show()
        tool_item = gtk.ToolItem()
        tool_item.add(self._table)
        self.insert(tool_item, -1)
        tool_item.show_all()

        self._table_rows_after = ToolButton('row-insert')
        self._table_rows_after.set_tooltip(_('Insert Row'))
        self._table_rows_after_id = self._table_rows_after.connect('clicked', self._table_rows_after_cb)
        self.insert(self._table_rows_after, -1)
        self._table_rows_after.show()

        self._table_delete_rows = ToolButton('row-remove')
        self._table_delete_rows.set_tooltip(_('Delete Row'))
        self._table_delete_rows_id = self._table_delete_rows.connect('clicked', self._table_delete_rows_cb)
        self.insert(self._table_delete_rows, -1)
        self._table_delete_rows.show()

        self._table_cols_after = ToolButton('column-insert')
        self._table_cols_after.set_tooltip(_('Insert Column'))
        self._table_cols_after_id = self._table_cols_after.connect('clicked', self._table_cols_after_cb)
        self.insert(self._table_cols_after, -1)
        self._table_cols_after.show()

        self._table_delete_cols = ToolButton('column-remove')
        self._table_delete_cols.set_tooltip(_('Delete Column'))
        self._table_delete_cols_id = self._table_delete_cols.connect('clicked', self._table_delete_cols_cb)
        self.insert(self._table_delete_cols, -1)
        self._table_delete_cols.show()

        self._abiword_canvas.connect('table-state', self._isTable_cb)

    def _table_cb(self, abi, rows, cols):
        self._abiword_canvas.insert_table(rows,cols)

    def _table_rows_after_cb(self, button):
        self._abiword_canvas.invoke_cmd('insertRowsAfter', '', 0, 0)

    def _table_delete_rows_cb(self, button):
        self._abiword_canvas.invoke_cmd('deleteRows', '', 0, 0)

    def _table_cols_after_cb(self, button):
        self._abiword_canvas.invoke_cmd('insertColsAfter', '', 0, 0)

    def _table_delete_cols_cb(self, button):
        self._abiword_canvas.invoke_cmd('deleteColumns', '', 0, 0)

    def _isTable_cb(self, abi, b):
        self._table_rows_after.set_sensitive(b)
        self._table_delete_rows.set_sensitive(b)
        self._table_cols_after.set_sensitive(b)
        self._table_delete_cols.set_sensitive(b)
        if b:
            self._toolbox.set_current_toolbar(TOOLBAR_TABLE)
            self._abiword_canvas.grab_focus() # hack: bad toolbox, bad!

class FormatToolbar(gtk.Toolbar):
    def __init__(self, toolbox, abiword_canvas):
        gtk.Toolbar.__init__(self)

        self._toolbox = toolbox
        self._abiword_canvas = abiword_canvas

        style_label = gtk.Label(_("Style: "))
        style_label.show()
        tool_item_style_label = gtk.ToolItem()
        tool_item_style_label.add(style_label)
        self.insert(tool_item_style_label, -1)
        tool_item_style_label.show()

        self._has_custom_styles = False

        self._style_combo = ComboBox()
        self._styles = [['Heading 1',_('Heading 1')], 
            ['Heading 2',_('Heading 2')], 
            ['Heading 3',_('Heading 3')],
            ['Heading 4',_('Heading 4')],
            ['Bullet List',_('Bullet List')],
            ['Dashed List',_('Dashed List')],
            ['Numbered List',_('Numbered List')],
            ['Lower Case List',_('Lower Case List')],
            ['Upper Case List',_('Upper Case List')],
            ['Block Text',_('Block Text')],
            ['Normal',_('Normal')],
            ['Plain Text',_('Plain Text')]]
        self._style_changed_id = self._style_combo.connect('changed', self._style_changed_cb)
        for i, s in enumerate(self._styles):
            self._style_combo.append_item(i, s[1], None)
            if s[0] == 'Normal':
                self._style_combo.set_active(i)
        tool_item = ToolComboBox(self._style_combo)
        self.insert(tool_item, -1);
        tool_item.show()

        self._abiword_canvas.connect('style-name', self._style_cb)

    def _style_cb(self, abi, style_name):
        style_index = -1
        for i, s in enumerate(self._styles):
            if s[0] == style_name:
                style_index = i
                break;

        # if we don't know this style yet, then add it (temporary) to the list
        if style_index == -1:
            logger.debug('Style not found in style list: %s', style_name)
            if not self._has_custom_styles:
                # add a separator to seperate the non-available styles from
                # the available ones
                self._styles.append(['','']) # ugly
                self._style_combo.append_separator()
                self._has_custom_styles = True
            # add the new style
            self._styles.append([style_name, style_name])
            self._style_combo.append_item(0, style_name, None)
            # see how many styles we have now, so we can select the last one
            model = self._style_combo.get_model()
            num_children = model.iter_n_children(None)
            logger.debug('Number of styles in the list: %d', num_children)
            style_index = num_children-1

        if style_index > -1:
            self._style_combo.handler_block(self._style_changed_id)
            self._style_combo.set_active(style_index)
            self._style_combo.handler_unblock(self._style_changed_id)

    def _style_changed_cb(self, combobox):
        if self._style_combo.get_active() != -1:
            logger.debug('Setting style name: %s', self._styles[self._style_combo.get_active()][0])
            self._abiword_canvas.set_style(self._styles[self._style_combo.get_active()][0])

class ViewToolbar(gtk.Toolbar):
    def __init__(self, abiword_canvas):
        gtk.Toolbar.__init__(self)

        self._abiword_canvas = abiword_canvas
        self._zoom_percentage = 0;

        self._zoom_out = ToolButton('zoom-out')
        self._zoom_out.set_tooltip(_('Zoom Out'))
        self._zoom_out_id = self._zoom_out.connect('clicked', self._zoom_out_cb)
        self.insert(self._zoom_out, -1)
        self._zoom_out.show()

        self._zoom_in = ToolButton('zoom-in')
        self._zoom_in.set_tooltip(_('Zoom In'))
        self._zoom_in_id = self._zoom_in.connect('clicked', self._zoom_in_cb)
        self.insert(self._zoom_in, -1)
        self._zoom_in.show()

        # TODO: fix the initial value
        self._zoom_spin_adj = gtk.Adjustment(0, 25, 400, 25, 50, 0)
        self._zoom_spin = gtk.SpinButton(self._zoom_spin_adj, 0, 0)
        self._zoom_spin_id = self._zoom_spin.connect('value-changed', self._zoom_spin_cb)
        self._zoom_spin.set_numeric(True)
        self._zoom_spin.show()
        tool_item_zoom = gtk.ToolItem()
        tool_item_zoom.add(self._zoom_spin)
        self.insert(tool_item_zoom, -1)
        tool_item_zoom.show()

        zoom_perc_label = gtk.Label(_("%"))
        zoom_perc_label.show()
        tool_item_zoom_perc_label = gtk.ToolItem()
        tool_item_zoom_perc_label.add(zoom_perc_label)
        self.insert(tool_item_zoom_perc_label, -1)
        tool_item_zoom_perc_label.show()

        separator = gtk.SeparatorToolItem()
        separator.set_draw(True)
        separator.show()
        self.insert(separator, -1)

        page_label = gtk.Label(_("Page: "))
        page_label.show()
        tool_item_page_label = gtk.ToolItem()
        tool_item_page_label.add(page_label)
        self.insert(tool_item_page_label, -1)
        tool_item_page_label.show()

        self._page_spin_adj = gtk.Adjustment(0, 1, 0, 1, 1, 0)
        self._page_spin = gtk.SpinButton(self._page_spin_adj, 0, 0)
        self._page_spin_id = self._page_spin.connect('value-changed', self._page_spin_cb)
        self._page_spin.set_numeric(True)
        self._page_spin.show()
        tool_item_page = gtk.ToolItem()
        tool_item_page.add(self._page_spin)
        self.insert(tool_item_page, -1)
        tool_item_page.show()

        self._total_page_label = gtk.Label(" / 0")
        self._total_page_label.show()
        tool_item = gtk.ToolItem()
        tool_item.add(self._total_page_label)
        self.insert(tool_item, -1)
        tool_item.show()

        self._abiword_canvas.connect("page-count", self._page_count_cb)
        self._abiword_canvas.connect("current-page", self._current_page_cb)
        self._abiword_canvas.connect("zoom", self._zoom_cb)

    def set_zoom_percentage(self, zoom):
        self._zoom_percentage = zoom
        self._abiword_canvas.set_zoom_percentage(self._zoom_percentage)
        
    def _zoom_cb(self, canvas, zoom):
        self._zoom_spin.handler_block(self._zoom_spin_id)
        try:
            self._zoom_spin.set_value(zoom)
        finally:
            self._zoom_spin.handler_unblock(self._zoom_spin_id)

    def _zoom_out_cb(self, button):
        if self._zoom_percentage == 0:
            self._zoom_percentage = self._abiword_canvas.get_zoom_percentage()
        if self._zoom_percentage >= 50:
            self.set_zoom_percentage(self._zoom_percentage - 25)

    def _zoom_in_cb(self, button):
        if self._zoom_percentage == 0:
            self._zoom_percentage = self._abiword_canvas.get_zoom_percentage()
        if self._zoom_percentage <= 375:
            self.set_zoom_percentage(self._zoom_percentage + 25)

    def _zoom_spin_cb(self, button):
        self._zoom_percentage = self._zoom_spin.get_value_as_int()
        self._abiword_canvas.set_zoom_percentage(self._zoom_percentage)

    def _page_spin_cb(self, button):
        self._page_num = self._page_spin.get_value_as_int()
        self._abiword_canvas.set_current_page(self._page_num)

    def _page_count_cb(self, canvas, count):
        current_page = canvas.get_current_page_num()
        self._page_spin_adj.set_all(current_page, 1, count, 1, 1, 0)
        self._total_page_label.props.label = \
            ' / ' + str(count)

    def _current_page_cb(self, canvas, num):
        self._page_spin.handler_block(self._page_spin_id)
        try:
            self._page_spin.set_value(num)
        finally:
            self._page_spin.handler_unblock(self._page_spin_id)