Translation.py 8.58 KB
Newer Older
Jean-Paul Smets's avatar
Jean-Paul Smets committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203
##############################################################################
# 
# Base18: a Zope product which provides multilingual services for CMF Default
#         documents.
#
# Copyright (c) 2002 Nexedi SARL and Contributors. All Rights Reserved.
#                    Jean-Paul Smets-Solane <jp@nexedi.com>
#
# WARNING: This program as such is intended to be used by professional
# programmers who take the whole responsability of assessing all potential 
# consequences resulting from its eventual inadequacies and bugs
#
# This program as such is not intended to be used by end users. End 
# users who are looking for a ready-to-use solution with commercial
# garantees and support are strongly adviced to contract a Free Software
# Service Company
#
# 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.
#
##############################################################################
__version__ = "$Revision$"[11:-2]
__doc__ = "This product provides multilingual capabilities to the CMFDefault \
 Document"

from utils import _translate_stx
from Globals import InitializeClass
from AccessControl import ClassSecurityInfo
from Products.CMFCore import CMFCorePermissions, PortalContent
from Products.Localizer.MessageCatalog import MessageCatalog

from Document import Document18
import string

# Content Creator
def addTranslation(self, id, title='', description=''):
    """ Add a Translation Document """
    o = Translation(id, title, description)
    self._setObject(id,o)

# Content Class
class Translation(Document18):
    """ A User Translation Document managed by the CMF
        Actually, just a wrapper arround Localize to
        make it editable under the CMF
    """
    meta_type = 'Base18 Translation'

    # Declarative security
    security = ClassSecurityInfo()

    # CMF Factory Type Information
    factory_type_information = ( { 'id'             : 'Translation'
        , 'meta_type'      : 'Base18 Translation'
        , 'description'    : """\
Translations can contain a list of translation messages formatted according\
to the .po standard. Translations can be registered through a translation\
workflow and provide a translation to an existing document in a portal'"""
        , 'icon'            :   'document_icon.gif'
        , 'product'         :   'Base18'
        , 'factory'         :   'addTranslation'
        , 'immediate_view'  :   'metadata_edit_form'
        , 'actions'         :   ( { 'id'             : 'view'
                                  , 'name'          : 'View'
                                  , 'action'        : 'translation_view'
                                  , 'permissions'   : (CMFCorePermissions.View,)
                                  }
                                , { 'id'            : 'edit'
                                  , 'name'          : 'Edit'
                                  , 'action'        : 'translation_edit_form'
                                  , 'permissions'   : (
                                      CMFCorePermissions.ModifyPortalContent, )
                                  }
                                , { 'id'            : 'metadata'
                                  , 'name'          : 'Metadata'
                                  , 'action'        : 'metadata_edit_form'
                                  , 'permissions'   : (
                                      CMFCorePermissions.ModifyPortalContent, )
                                  }
                                , { 'id'            : 'template'
                                  , 'name'          : 'Translation Template'
                                  , 'action'        : 'translation_template'
                                  , 'permissions'   : (
                                      CMFCorePermissions.View, )
                                  }
                                )
                             }
                           ,
                           )

    ### Default values
    targetContent = ()
    targetLanguage = ('en')
    messageCatalog = None

    ### Edit method
    security.declareProtected( CMFCorePermissions.ModifyPortalContent, 'edit' )
    def edit( self
            , text_format
            , text
            , file=''
            , safety_belt=''
            , target_language='en'
            , target_content=None
            ):
        """
        *used to be WorkflowAction(_edit)
        To add webDav support, we need to check if the content is locked, and if
        so return ResourceLockedError if not, call _edit.

        Note that this method expects to be called from a web form, and so
        disables header processing
        """
        self.targetLanguage = target_language
        if target_content is not None:
            self.targetContent = target_content.getPhysicalPath()
        else:
            self.targetContent = ('a')
        Document18.edit(self, text_format, text, file, safety_belt)
        self.messageCatalog = MessageCatalog("mc", "Message Catalog",
                                (self.targetLanguage,))
        self.messageCatalog.manage_import(self.targetLanguage, self.text)

    def _edit(self, text, text_format='', safety_belt=''):
        """ Edit the Document - Parses headers and cooks the body"""
        headers = {}
        if not safety_belt:
            safety_belt = headers.get('SafetyBelt', '')
        if not self._safety_belt_update(safety_belt=safety_belt):
            msg = ("Intervening changes from elsewhere detected."
                   " Please refetch the document and reapply your changes."
                   " (You may be able to recover your version using the"
                   " browser 'back' button, but will have to apply them"
                   " to a freshly fetched copy.)")
            raise 'EditingConflict', msg
        self.text = self.cooked_text = text        

    ### Content accessor methods
    security.declareProtected(CMFCorePermissions.View, 'SearchableText')
    def SearchableText(self, md=None):
        """\
        Used by the catalog for basic full text indexing
        We are going to concatenate all available translations
        """
        if md is None: md = self.findMessageCatalog()
        searchable_text = self.text
        for lang in md.get_languages():
            searchable_text = searchable_text + "%s %s" %  (
                            md.gettext(self.Title(),lang)
                            , md.gettext(self.Description(),lang)
                            )
        return searchable_text

    # Translation methods
    security.declareProtected(CMFCorePermissions.View, 'TranslatedBody')
    def TranslatedBody(self, stx_level=None, setlevel=0, lang=None, md=None):
        """\
        Equivalent to CookedBody but returns a translated version thanks
        to the use of message catalog
        """
        if md is None: md = self.find_md()
        if stx_level is None: stx_level = self._stx_level
        cooked = _translate_stx(self.text, md, stx_level, lang)
        return cooked           

    security.declareProtected(CMFCorePermissions.View, 'TranslationTemplate')
    def TranslationTemplate(self):
        """\
        This method allows to produce of .pot file for this document
        """
        # Create a new catalog
        md = MessageCatalog('temp', 'Temporary Message Catalog',
                        self.find_md().get_languages())
        # Do some dirty acquisition trick
        md.aq_base = self
        # Run the md on the text body
        cooked = _translate_stx(self.text, md, self._stx_level, None)
        md.gettext(self.Title())
        md.gettext(self.Description())
        # And return the template
        return md.manage_export('locale.pt')

    # Implementation with Message Catalogs
    security.declareProtected(CMFCorePermissions.View, 'messageCatalog')   
    def getMessageCatalog(self):
        return self.messageCatalog
    
    security.declareProtected(CMFCorePermissions.View, 'targetContentPath')   
    def targetContentPath(self):
        return string.join(self.targetContent,'/')
    
InitializeClass(Translation)