root/CPS3/products/CPSSchemas/trunk/ExtendedWidgets.py

# (C) Copyright 2003-2009 Nuxeo SA <http://nuxeo.com>
# Authors:
# Florent Guillaume <fg@nuxeo.com>
# M.-A. Darche <madarche@nuxeo.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as published
# by the Free Software Foundation.
#
# 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.
#
# $Id$
"""Extended widget types.

Definition of extended widget types.
"""

from logging import getLogger
import warnings
import zipfile
import operator
import os
from tempfile import mkstemp
from cgi import escape
from re import match

from Globals import InitializeClass
from Acquisition import aq_base, aq_parent, aq_inner
from DateTime.DateTime import DateTime

from Products.PythonScripts.standard import newline_to_br
from Products.PythonScripts.standard import structured_text
from reStructuredText import HTML

from Products.CMFCore.utils import getToolByName

from Products.CPSUtil.html import XhtmlSanitizer
from Products.CPSSchemas.Widget import CPSWidget
from Products.CPSSchemas.Widget import widgetRegistry
from Products.CPSSchemas.BasicWidgets import CPSSelectWidget
from Products.CPSSchemas.BasicWidgets import CPSMultiSelectWidget
from Products.CPSSchemas.BasicWidgets import CPSStringWidget
from Products.CPSSchemas.BasicWidgets import CPSImageWidget
from Products.CPSSchemas.BasicWidgets import CPSFileWidget
from Products.CPSSchemas.BasicWidgets import renderHtmlTag
from Products.CPSSchemas.BasicWidgets import CPSProgrammerCompoundWidget
from Products.CPSSchemas.swfHeaderData import analyseContent

##################################################
# previously named CPSTextAreaWidget in BasicWidget r1.78
class CPSTextWidget(CPSStringWidget):
    """Text widget."""
    meta_type = 'Text Widget'

    # Warning if configurable the widget require field[1] and field[2]
    field_types = ('CPS String Field',  # text value
                   'CPS String Field',  # render_position if configurable
                   'CPS String Field')  # render_format if configurable
    field_inits = ({'is_searchabletext': 1,}, {}, {})

    _properties = CPSWidget._properties + (
        {'id': 'width', 'type': 'int', 'mode': 'w',
         'label': 'Width'},
        {'id': 'height', 'type': 'int', 'mode': 'w',
         'label': 'Height'},
        {'id': 'size_max', 'type': 'int', 'mode': 'w',
         'label': 'Max Size'},

        {'id': 'xhtml_sanitize', 'type': 'selection', 'mode': 'w',
         'select_variable': 'all_xhtml_sanitize_options',
         'label': 'XHTML sanitize the content'},
        {'id': 'xhtml_sanitize_system', 'type': 'string', 'mode': 'w',
         'label': 'XHTML sanitize through system command line'},
        {'id': 'file_uploader', 'type': 'boolean', 'mode': 'w',
         'label': 'Add a file uploader to the widget UI'},

        {'id': 'html_editor_type', 'type': 'string', 'mode': 'w',
         'label': 'The name of the HTML editor to use'},

        {'id': 'html_editor_position', 'type': 'selection', 'mode': 'w',
         'select_variable': 'all_html_editor_positions',
         'label': 'HTML rich text editor position'},
        {'id': 'render_format', 'type': 'selection', 'mode': 'w',
         'select_variable': 'all_render_formats',
         'label': 'Render format'},
        {'id': 'render_position', 'type': 'selection', 'mode': 'w',
         'select_variable': 'all_render_positions',
         'label': 'Render position'},
        {'id': 'configurable', 'type': 'selection', 'mode': 'w',
         'select_variable': 'all_configurable',
         'label': 'What is user configurable (require extra fields)'},
        )
    all_xhtml_sanitize_options = ['no', 'builtin', 'system']
    all_configurable = ['nothing', 'position', 'format', 'position and format']
    all_render_positions = ['normal', 'col_left', 'col_right']
    all_render_formats = ['text', 'html', 'rst']
    all_html_editor_positions = ['popup', 'embedded']

    width = 40
    height = 5
    size_max = 2*1024*1024
    xhtml_sanitize = False
    # Notes about using tidy :
    # * tidy doesn't know explicitly about the latin9 encoding but specifying
    #   latin1 works well with latin9 encoded content.
    # * force-output makes tidy produce an output even if errors were found.
    # * show-body-only outputs only the content of the body tag.
    # * write-back modifies the file in place.
    xhtml_sanitize_system = 'tidy -indent -wrap 80 --input-encoding latin1 --output-encoding latin1 --force-output yes --clean yes --drop-font-tags yes --drop-proprietary-attributes yes --show-body-only yes --write-back yes --output-xhtml yes --show-errors 0 --show-warnings no --hide-comments no %s 2>/dev/null'
    file_uploader = False

    # Possible values are "tinymce" and "fckeditor"
    html_editor_type = 'tinymce'

    render_position = all_render_positions[0]
    render_format = all_render_formats[0]
    html_editor_position = all_html_editor_positions[0]
    configurable = 'nothing'
    input_encoding = 'iso-8859-15'
    output_encoding = 'iso-8859-15'

    # Associating the widget label with an input area to improve the widget
    # accessibility.
    has_input_area = True

    xhtml_sanitizer = XhtmlSanitizer()

    def prepare(self, datastructure, **kw):
        """Prepare datastructure from datamodel."""
        datamodel = datastructure.getDataModel()
        widget_id = self.getWidgetId()
        datastructure[widget_id] = str(datamodel[self.fields[0]])
        rposition = self.render_position
        rformat = self.render_format
        if self.configurable != 'nothing':
            if len(self.fields) > 1:
                v  = datamodel[self.fields[1]]
                if v in self.all_render_positions:
                    rposition = v
            if len(self.fields) > 2:
                v = datamodel[self.fields[2]]
                if v in self.all_render_formats:
                    rformat = v
        datastructure[widget_id + '_fileupload'] = None
        datastructure[widget_id + '_rposition'] = rposition
        datastructure[widget_id + '_rformat'] = rformat

    def validate(self, datastructure, **kw):
        """Validate datastructure and update datamodel."""
        widget_id = self.getWidgetId()
        file_upload = datastructure.get(widget_id + '_fileupload', None)
        file_upload_valid = False
        if file_upload is not None:
            ms = self.size_max
            file_upload.seek(0)
            read_size = len(file_upload.read(ms + 1))
            if read_size > ms:
                # Size is expressed in human readable value
                max_size_str = self.getHumanReadableSize(ms)
                err = 'cpsschemas_err_file_too_big ${max_size}'
                err_mapping = {'max_size': max_size_str}
                return self.doesNotValidate(err, err_mapping,
                                            file, datastructure)
            file_upload.seek(0)
            value = file_upload.read()
            read_size = len(value)
            if read_size > 0:
                file_upload_valid = True
        if not file_upload_valid:
            value = datastructure[widget_id]
        err, v = self._extractValue(value)

        if err:
            datastructure.setError(widget_id, err)
            datastructure[widget_id] = v
        else:
            datamodel = datastructure.getDataModel()
            # Validating rposition and rformat entered by the user and
            # correcting them if necessary.
            if self.configurable != 'nothing':
                if len(self.fields) > 1:
                    rposition = datastructure[widget_id + '_rposition']
                    if rposition and rposition in self.all_render_positions:
                        datamodel[self.fields[1]] = rposition
                if len(self.fields) > 2:
                    rformat = datastructure[widget_id + '_rformat']
                    if rformat and rformat in self.all_render_formats:
                        datamodel[self.fields[2]] = rformat
            else:
                # Defaulting to the widget property since no fields are used to
                # store the format or the position.
                rformat = self.render_format
            if rformat == 'html':
                if self.xhtml_sanitize == 'builtin':
                    self.xhtml_sanitizer.reset()
                    self.xhtml_sanitizer.feed(v)
                    v = self.xhtml_sanitizer.getResult()
                elif self.xhtml_sanitize == 'system':
                    file_to_clean_fd, file_to_clean_path = mkstemp(
                        suffix=".xhtml",
                        prefix="cps-schemas",
                        )
                    file_to_clean = os.fdopen(file_to_clean_fd, 'w')
                    file_to_clean.write(v)
                    file_to_clean.close()
                    os.system(self.xhtml_sanitize_system % file_to_clean_path)
                    file_to_clean = open(file_to_clean_path)
                    v = file_to_clean.read()
                    file_to_clean.close()
                    os.remove(file_to_clean_path)

            datamodel[self.fields[0]] = v
            if file_upload_valid or self.xhtml_sanitize:
                # If the file_upload is valid we update the datastructure so
                # that the immediate view after the modification has been done
                # shows the content of the file upload instead of the old value.
                self.prepare(datastructure)
        return not err

    def render(self, mode, datastructure, **kw):
        """Render in mode from datastructure."""
        render_method = 'widget_text_render'
        meth = getattr(self, render_method, None)
        if meth is None:
            raise RuntimeError("Unknown Render Method %s for widget type %s"
                               % (render_method, self.getId()))
        widget_id = self.getWidgetId()
        value = datastructure[widget_id]
        rposition = datastructure[widget_id + '_rposition']
        rformat = datastructure[widget_id + '_rformat']
        if mode == 'view':
            if rformat == 'text':
                value = newline_to_br(escape(value))
            elif rformat == 'html':
                pass
            elif rformat == 'rst':
                value = HTML(value,
                             output_encoding=self.output_encoding,
                             input_encoding=self.input_encoding,
                             initial_header_level=2, report_level=0)
            # The pre render format is not a proposed choice in the UI anymore.
            # BBB compatibility code, will be removed in CPS 3.5.0.
            elif rformat == 'pre':
                value = '<pre>' + escape(value) + '</pre>'
            # The stx render format is not a proposed choice in the UI anymore.
            # BBB compatibility code, will be removed in CPS 3.5.0.
            elif rformat == 'stx':
                value = structured_text(value)
            else:
                RuntimeError("unknown render_format '%s' for '%s'" %
                             (rformat, self.getId()))
        return meth(mode=mode, datastructure=datastructure, value=value,
                    file_uploader=self.file_uploader,
                    html_editor_type=self.html_editor_type,
                    render_position=rposition, render_format=rformat,
                    html_editor_position=self.html_editor_position,
                    configurable=str(self.configurable))

InitializeClass(CPSTextWidget)

widgetRegistry.register(CPSTextWidget)

##################################################
# previously named CPSDateWidget in BasicWidget r1.78
class CPSDateTimeWidget(CPSWidget):
    """DateTime widget.

    A widget that displays and makes it possible to edit a DateTime object.
    View and edit mode can be done in the ISO 8601 date format (YYYY-mm-dd)
    or in a localized format (mm/dd/YYYY for English and dd/mm/YYYY for the rest
    of the world) cf. http://www.w3.org/TR/NOTE-datetime
    """
    meta_type = 'DateTime Widget'

    field_types = ('CPS DateTime Field',)

    _properties = CPSWidget._properties + (
        {'id': 'view_format', 'type': 'string', 'mode': 'w',
         'label': 'View format (short, medium or long)'},
        {'id': 'time_setting', 'type': 'boolean', 'mode': 'w',
         'label': 'Enabling the setting of time of the day'},
        {'id': 'time_hour_default', 'type': 'string', 'mode': 'w',
         'label': 'default hour for time'},
        {'id': 'time_minutes_default', 'type': 'string', 'mode': 'w',
         'label': 'default minutes for time'},
        )
    # When will CPS default to the more sensible ISO 8601 date format?
    #view_format = 'iso8601_medium_easy'
    view_format = 'medium'
    time_setting = 1
    time_hour_default = '12'
    time_minutes_default = '00'

    # Associating the widget label with an input area to improve the widget
    # accessibility.
    has_input_area = True

    def getDateTimeInfo(self, value, mode=None):
        """Return a tuple that is used to set the datastructure

        Called in prepare when mode is not known, and called again in render
        when mode is known, because a default value has to be provided in edit
        mode (current date time).
        """
        # default values
        date = ''
        hour = ''
        minute = ''

        # value is set to current time if:
        # - value is not alrady set and
        # - widget is required an
        # - mode is 'edit' or 'create'
        if not value and self.is_required and mode in ['edit', 'create']:
            value = DateTime()

        if value == 'None':
            value = None
        if value:
            # Backward compatibility test, this logic is not used by the
            # current code.
            if isinstance(value, str):
                value = DateTime(value)
            d = str(value.day())
            m = str(value.month())
            y = str(value.year())
            if self.view_format.startswith('iso8601'):
                date = '%s-%s-%s' % (y, m, d)
            else:
                locale = self.translation_service.getSelectedLanguage()
                if locale in ('en', 'hu'):
                    date = '%s/%s/%s' % (m, d, y)
                else:
                    date = '%s/%s/%s' % (d, m, y)
            hour = str(value.h_24())
            minute = str(value.minute())

        # if hour and minute are not set, set default values
        hour = hour or self.time_hour_default
        minute = minute or self.time_minutes_default

        return (value, date, hour, minute)

    def prepare(self, datastructure, **kw):
        """Prepare datastructure from datamodel."""
        datamodel = datastructure.getDataModel()
        v = datamodel[self.fields[0]]

        # get date time info, mode is not known here
        v, date, hour, minute = self.getDateTimeInfo(v, mode=None)

        widget_id = self.getWidgetId()
        datastructure[widget_id] = v
        datastructure[widget_id + '_date'] = date
        datastructure[widget_id + '_hour'] = hour or self.time_hour_default
        datastructure[widget_id + '_minute'] = minute or self.time_minutes_default

    def validate(self, datastructure, **kw):
        """Validate datastructure and update datamodel."""
        datamodel = datastructure.getDataModel()
        field_id = self.fields[0]
        widget_id = self.getWidgetId()

        date = datastructure[widget_id + '_date'].strip()
        hour = datastructure[widget_id + '_hour'].strip() or \
               self.time_hour_default
        minute = datastructure[widget_id + '_minute'].strip() or \
                 self.time_minutes_default

        if not (date):
            if self.is_required:
                datastructure[widget_id] = ''
                datastructure.setError(widget_id, 'cpsschemas_err_required')
                return 0
            else:
                datamodel[field_id] = None
                return 1

        if self.view_format.startswith('iso8601'):
            if match(r'^[0-9]+-[0-9]{2}-[0-9]{2}', date) is not None:
                y, m, d = date.split('-')
            else:
                datastructure.setError(widget_id, 'cpsschemas_err_date')
                return 0
        else:
            if match(r'^[0-9]?[0-9]/[0-9]?[0-9]/[0-9]{2,4}$', date) is not None:
                locale = self.translation_service.getSelectedLanguage()
                if locale in ('en', 'hu'):
                    m, d, y = date.split('/')
                else:
                    d, m, y = date.split('/')
            else:
                datastructure.setError(widget_id, 'cpsschemas_err_date')
                return 0

        try:
            v = DateTime(int(y), int(m), int(d), int(hour), int(minute))
        except (ValueError, TypeError, DateTime.DateTimeError,
                DateTime.SyntaxError, DateTime.DateError):
            datastructure.setError(widget_id, 'cpsschemas_err_date')
            return 0
        else:
            datastructure[widget_id] = v
            datamodel[field_id] = v
            return 1

    def render(self, mode, datastructure, **kw):
        """Render in mode from datastructure."""
        render_method = 'widget_datetime_render'
        meth = getattr(self, render_method, None)
        if meth is None:
            raise RuntimeError("Unknown Render Method %s for widget type %s"
                               % (render_method, self.getId()))

        # XXX AT: datastructure has to be set again here, in case we're in edit
        # or create mode, because a default value has to be provided.
        if mode in ['edit', 'create']:
            datamodel = datastructure.getDataModel()
            v = datamodel[self.fields[0]]
            v, date, hour, minute = self.getDateTimeInfo(v, mode=mode)
            widget_id = self.getWidgetId()
            datastructure[widget_id] = v
            datastructure[widget_id + '_date'] = date
            datastructure[widget_id + '_hour'] = hour or self.time_hour_default
            datastructure[widget_id + '_minute'] = minute or self.time_minutes_default

        return meth(mode=mode, datastructure=datastructure)


InitializeClass(CPSDateTimeWidget)

widgetRegistry.register(CPSDateTimeWidget)

##################################################
class CPSAttachedFileWidget(CPSFileWidget):
    """AttachedFile widget."""
    meta_type = 'AttachedFile Widget'

    field_types = ('CPS File Field',   # File
                   'CPS String Field', # Plain text for indexing (optional)
                   'CPS File Field',   # Preview (HTML, optional)
                   'CPS SubObjects Field',)

    field_inits = ({'is_searchabletext': 0,
                    'suffix_text': '_f1', # _f# are autocomputed field ext
                    'suffix_html': '_f2',
                    'suffix_html_subfiles': '_f3',
                    },
                   {'is_searchabletext': 1}, {}, {},
                   )

    _properties = CPSFileWidget._properties + (
        {'id': 'display_html_preview', 'type': 'boolean', 'mode': 'w',
         'label': 'Display link to HTML preview in view mode'},
        {'id': 'display_printable_version', 'type': 'boolean', 'mode': 'w',
         'label': 'Display link to printable version in view mode'},
        {'id': 'allowed_suffixes', 'type': 'tokens', 'mode': 'w',
         'label': 'Allowed file suffixes (ex: .html .odt)'},
        )
    display_html_preview = True
    display_printable_version = True
    allowed_suffixes = []

    def prepare(self, datastructure, **kw):
        """Prepare datastructure from datamodel."""
        CPSFileWidget.prepare(self, datastructure, **kw)
        datamodel = datastructure.getDataModel()
        widget_id = self.getWidgetId()

        # Compute preview info for widget.
        if len(self.fields) > 2 and datamodel.get(self.fields[2]) is not None:
            preview_id = self.fields[2]
        else:
            preview_id = None
        datastructure[widget_id + '_preview'] = preview_id

    def checkFileName(self, fileid, mimetype):
        if self.allowed_suffixes:
            base, suffix = os.path.splitext(fileid)
            if suffix not in self.allowed_suffixes:
                err = 'cpsschemas_err_file_bad_suffix ${allowed_file_suffixes}'
                err_mapping = {'allowed_file_suffixes':
                               ' '.join(self.allowed_suffixes)}
                return err, err_mapping
        return '', {}

    def render(self, mode, datastructure, **kw):
        """Render in mode from datastructure."""
        render_method = 'widget_attachedfile_render'
        meth = getattr(self, render_method, None)
        if meth is None:
            raise RuntimeError("Unknown Render Method %s for widget type %s"
                               % (render_method, self.getId()))
        file_info = self.getFileInfo(datastructure)

        return meth(mode=mode, datastructure=datastructure,
                    **file_info)

InitializeClass(CPSAttachedFileWidget)

widgetRegistry.register(CPSAttachedFileWidget)

##################################################

class CPSZippedHtmlWidget(CPSAttachedFileWidget):
    """CPS ZippedHtml widget.

    A zip file that contains html which can be viewed online.
    Use index.html or any html file from the zip as preview page.
    """

    meta_type = 'ZippedHtml Widget'

    size_max = 1024*1024

    # FIXME checkFileName() from ancestor is never called after changeset [30791]
    # We need to fix it over there.
    #allowed_suffixes = ['.zip']

    def _is_zipfile(self, datastructure, **kw):
        # Check the zip file validity
        choice = datastructure[self.getWidgetId()+'_choice']
        if choice == 'change':
            validated = False
            file_upload = datastructure.get(self.getWidgetId())
            try:
                zf = zipfile.ZipFile(file_upload, 'r')
            except zipfile.BadZipfile:
                pass
            else:
                if zf.testzip() is None:
                    validated = True
                    zf.close()
            return validated
        return True

    def validate(self, datastructure, **kw):
        # Validate datastructure and update datamodel.
        return (CPSAttachedFileWidget.validate(self, datastructure, **kw) and
                self._is_zipfile(datastructure, **kw))

    def _getIndexPath(self, datastructure):
        file_upload = datastructure.get(self.getWidgetId())
        # Creation time
        if not file_upload:
            return ''
        # Here the zipfile has been validated already.
        zf = zipfile.ZipFile(file_upload, 'r')
        all_files = [info.filename for info in zf.infolist()]
        html_files = [f for f in all_files
                      if (f.lower().endswith('.html') or
                          f.lower().endswith('.htm'))]
        index_files = [f for f in html_files
                       if f.lower().find('index.htm') >= 0]
        index_path = None
        if index_files:
            index_path = index_files[0]
        elif html_files:
            index_path = html_files[0]
        zf.close()
        return index_path

    def render(self, mode, datastructure, **kw):
        render_method = 'widget_zippedhtml_render'
        meth = getattr(self, render_method, None)
        if meth is None:
            raise RuntimeError("Unknown Render Method %s for widget type %s"
                               % (render_method, self.getId()))
        file_info = self.getFileInfo(datastructure)
        file_info['index_path'] = self._getIndexPath(datastructure)
        return meth(mode=mode, datastructure=datastructure, **file_info)

InitializeClass(CPSZippedHtmlWidget)

widgetRegistry.register(CPSZippedHtmlWidget)

#################################################

class CPSRichTextEditorWidget(CPSWidget):
    """Rich Text Editor widget.

    THIS WIDGET SHOULD NOT BE USED AND IS DEPRECATED.

    Use the Text Widget which provides both HTML and text formats.
    """
    meta_type = 'Rich Text Editor Widget'

    field_types = ('CPS String Field',)
    field_inits = ({'is_searchabletext': 1,},)

    width = 40
    height = 5
    _properties = CPSWidget._properties + (
        {'id': 'width', 'type': 'int', 'mode': 'w',
         'label': 'Width'},
        {'id': 'height', 'type': 'int', 'mode': 'w',
         'label': 'Height'},
        )

    def prepare(self, datastructure, **kw):
        """Prepare datastructure from datamodel."""
        datamodel = datastructure.getDataModel()
        datastructure[self.getWidgetId()] = datamodel[self.fields[0]]

    def validate(self, datastructure, **kw):
        """Validate datastructure and update datamodel."""
        value = datastructure[self.getWidgetId()]
        try:
            v = str(value)
        except ValueError:
            datastructure.setError(self.getWidgetId(),
                                   "cpsschemas_err_textarea")
            ok = 0
        else:
            datamodel = datastructure.getDataModel()
            datamodel[self.fields[0]] = v
            ok = 1
        return ok

    def render(self, mode, datastructure, **kw):
        """Render in mode from datastructure."""
        warnings.warn("The Rich Text Editor Widget (%s/%s) is deprecated "
                      "and will be removed in CPS 3.5.0. Use a Text Widget "
                      "instead" % (aq_parent(aq_inner(self)).getId(),
                                   self.getWidgetId()), DeprecationWarning)
        value = datastructure[self.getWidgetId()]
        if mode == 'view':
            # Return HTML directly
            return value
        elif mode == 'edit':
            render_method = 'widget_rte_render'
            meth = getattr(self, render_method, None)
            if meth is None:
                raise RuntimeError("Unknown Render Method %s for widget type %s"
                                   % (render_method, self.getId()))
            value = datastructure[self.getWidgetId()]
            if hasattr(aq_base(value), 'getId'):
                current_name = value.getId()
            else:
                current_name = '-'
            return meth(mode=mode, datastructure=datastructure,
                        current_name=current_name)
        raise RuntimeError("unknown mode %s" % mode)

InitializeClass(CPSRichTextEditorWidget)

widgetRegistry.register(CPSRichTextEditorWidget)

##########################################

class CPSExtendedSelectWidget(CPSSelectWidget):
    """Extended Select widget."""
    meta_type = 'ExtendedSelect Widget'

    def render(self, mode, datastructure, **kw):
        """Render in mode from datastructure."""

        if mode == 'view':
            return CPSSelectWidget.render(self, mode, datastructure)

        elif mode == 'edit':
            render_method = 'widget_extendedselect_render'

            meth = getattr(self, render_method, None)
            if meth is None:
                raise RuntimeError("Unknown Render Method %s for widget type %s"
                                   % (render_method, self.getId()))
            return meth(mode=mode, datastructure=datastructure,
                        vocabulary=self._getVocabulary(datastructure))

        else:
            raise RuntimeError('unknown mode %s' % mode)

InitializeClass(CPSExtendedSelectWidget)

widgetRegistry.register(CPSExtendedSelectWidget)

##########################################

class CPSInternalLinksWidget(CPSWidget):
    """Internal Links widget."""
    meta_type = 'InternalLinks Widget'

    field_types = ('CPS String List Field',)
    field_inits = ({'is_searchabletext': 1,},)

    _properties = CPSWidget._properties + (
        {'id': 'new_window', 'type': 'boolean', 'mode': 'w',
         'label': 'Display in a new window'},
        {'id': 'size', 'type': 'int', 'mode': 'w',
         'label': 'Links displayed'},
        {'id': 'absolute', 'type': 'boolean', 'mode': 'w',
         'label': 'Links displayed with absolute URL'},
        )
    new_window = 0
    size = 0
    absolute = False

    def prepare(self, datastructure, **kw):
        """Prepare datastructure from datamodel."""
        datamodel = datastructure.getDataModel()
        datastructure[self.getWidgetId()] = datamodel[self.fields[0]]

    def validate(self, datastructure, **kw):
        """Validate datastructure and update datamodel."""
        widget_id = self.getWidgetId()
        value = datastructure[widget_id]
        err = 0
        if self.is_required and (value == [] or value == ['']):
            err = 'cpsschemas_err_required'
        v = []


        for line in value:
            if line.strip():
                v.append(line)

        if err:
            datastructure.setError(widget_id, err)
        else:
            datamodel = datastructure.getDataModel()
            datamodel[self.fields[0]] = v
            self.prepare(datastructure)

        return not err

    def render(self, mode, datastructure, **kw):
        """Render in mode from datastructure."""
        if mode not in ('view', 'edit'):
            raise RuntimeError('unknown mode %s' % mode)

        render_method = 'widget_internallinks_render'
        meth = getattr(self, render_method, None)

        return meth(mode=mode, datastructure=datastructure)

InitializeClass(CPSInternalLinksWidget)

widgetRegistry.register(CPSInternalLinksWidget)

##################################################

class CPSPhotoWidget(CPSImageWidget):
    """Photo widget."""
    meta_type = 'Photo Widget'

    field_types = ('CPS Image Field',   # Image
                   'CPS String Field',  # Caption
                   'CPS String Field',  # render_position if configurable
                   'CPS Image Field',   # Original photo
                   'CPS String Field',  # Title
                   'CPS String Field',  # Alternate text for accessibility
                   )
    field_inits = ({}, {'is_searchabletext': 1,}, {}, {}, {}, {})

    _properties = CPSImageWidget._properties + (
        {'id': 'render_position', 'type': 'selection', 'mode': 'w',
         'select_variable': 'all_render_positions',
         'label': 'Render position'},
        {'id': 'configurable', 'type': 'selection', 'mode': 'w',
         'select_variable': 'all_configurable',
         'label': 'What is user configurable, require extra fields'},
        {'id': 'keep_original', 'type': 'boolean', 'mode': 'w',
         'label': 'Keep original image'},
        )
    all_configurable = ['nothing', 'position']
    all_render_positions = ['left', 'center', 'right']

    allow_resize = True
    render_position = all_render_positions[0]
    configurable = all_configurable[0]
    keep_original = True

    def prepare(self, datastructure, **kw):
        """Prepare datastructure from datamodel."""
        CPSImageWidget.prepare(self, datastructure, **kw)
        datamodel = datastructure.getDataModel()
        widget_id = self.getWidgetId()

        if len(self.fields) > 1:
            datastructure[widget_id + '_subtitle'] = datamodel[self.fields[1]]
        else:
            datastructure[widget_id + '_subtitle'] = ''

        rposition = self.render_position
        if self.configurable != 'nothing':
            if len(self.fields) > 2:
                v = datamodel[self.fields[2]]
                if v in self.all_render_positions:
                    rposition = v
        datastructure[widget_id + '_rposition'] = rposition

        if self.keep_original and len(self.fields) > 3:
            datastructure[widget_id + '_resize_kept'] = ''

        title = ''
        if len(self.fields) > 4:
            title = datamodel[self.fields[4]]
        datastructure[widget_id + '_title'] = title

        alt = ''
        if len(self.fields) > 5:
            alt = datamodel[self.fields[5]]
            # Defaulting to the file name if there is an image file and if no
            # alt has been given yet. This is the case when the document is
            # created.
            if not alt:
                alt = datastructure[widget_id + '_filename']
        datastructure[widget_id + '_alt'] = alt

    def otherProcessing(self, choice, datastructure):
        datamodel = datastructure.getDataModel()
        widget_id = self.getWidgetId()

        # Caption
        if len(self.fields) > 1:
            subtitle = datastructure[widget_id + '_subtitle']
            datamodel[self.fields[1]] = subtitle

        # Title
        if len(self.fields) > 4:
            title = datastructure[widget_id + '_title']
            datamodel[self.fields[4]] = title

        # Alt
        if len(self.fields) > 5:
            alt = datastructure[widget_id + '_alt']
            datamodel[self.fields[5]] = alt

        # Position
        if self.configurable != 'nothing' and len(self.fields) > 2:
            rposition = datastructure[widget_id + '_rposition']
            if rposition and rposition in self.all_render_positions:
                datamodel[self.fields[2]] = rposition

        # Resize
        if choice != 'resize':
            return
        if not self.canKeepOriginal():
            return
        image = datamodel[self.fields[0]]
        original_image = datamodel[self.fields[3]]
        if original_image is None and image is None:
            return

        if original_image is None:
            original_image = image
            datamodel[self.fields[3]] = original_image

        filename = original_image.title
        resize_op = datastructure[widget_id + '_resize_kept']
        image = self.getResizedImage(original_image, filename, resize_op)
        datamodel[self.fields[0]] = image

    def canKeepOriginal(self):
        return (self.keep_original and
                self.allow_resize and
                len(self.fields) > 3)

    def maybeKeepOriginal(self, image, datastructure):
        if self.canKeepOriginal():
            datamodel = datastructure.getDataModel()
            datamodel[self.fields[3]] = image

    def render(self, mode, datastructure, **kw):
        """Render in mode from datastructure."""
        render_method = 'widget_photo_render'
        meth = getattr(self, render_method, None)
        if meth is None:
            raise RuntimeError("Unknown Render Method %s for widget type %s"
                               % (render_method, self.getId()))

        widget_id = self.getWidgetId()
        rposition = datastructure[widget_id + '_rposition']
        subtitle = datastructure[widget_id + '_subtitle']

        img_info = self.getImageInfo(datastructure, dump_cid_parts=True, **kw)
        return meth(mode=mode, datastructure=datastructure,
                    subtitle=subtitle,
                    render_position=rposition,
                    configurable=str(self.configurable),
                    **img_info)


InitializeClass(CPSPhotoWidget)

widgetRegistry.register(CPSPhotoWidget)

##################################################

class CPSGenericSelectWidget(CPSSelectWidget):
    """Generic Select widget."""
    meta_type = 'Generic Select Widget'

    _properties = CPSSelectWidget._properties + (
        {'id': 'render_format', 'type': 'selection', 'mode': 'w',
         'select_variable': 'render_formats',
         'label': 'Render format'},
        # Provide an 'other' option where free input is accepted
        # (ignored if render format is 'select')
        {'id': 'other_option', 'type': 'boolean', 'mode':'w',
         'label': "Provide an 'other' option"},
        {'id': 'other_option_display_width', 'type': 'int', 'mode': 'w',
         'label': "'other' option display width"},
        {'id': 'other_option_size_max', 'type': 'int', 'mode': 'w',
         'label': "'other' option maximum input width"},
        # Enables the possibility to add blank values to vocabulary just to
        # change the way the list is presented (using items like 'choose a
        # category' or '------------' to separate items) and not affect the way
        # the value will be validated if the widget is required.
        # Before this, if the widget was required, default behavior was to
        # accept blank values if they were in the vocabulary (e.g
        # blank_value_ok_if_required = 1)
        {'id': 'blank_value_ok_if_required', 'type': 'boolean', 'mode':'w',
         'label': "Accept blank values when validating"},
        {'id': 'onchange', 'type': 'string', 'mode':'w',
         'label': "onchange attribute (edit mode only)"}
        )
    render_formats = ['select', 'radio']

    render_format = render_formats[0]
    other_option = 0
    other_option_display_width = 20
    other_option_size_max = 0
    blank_value_ok_if_required = 1
    onchange = ''

    # BBB for [46171]. Remove this once an upgrade step has been written
    sorted = False

    def prepare(self, datastructure, **kw):
        """Prepare datastructure from datamodel."""
        datamodel = datastructure.getDataModel()
        value = datamodel[self.fields[0]]
        if isinstance(value, (list, tuple)):
            if len(value):
                value = value[0]
            else:
                value = ''
        datastructure[self.getWidgetId()] = value

    def validate(self, datastructure, **kw):
        """Validate datastructure and update datamodel."""
        widget_id = self.getWidgetId()
        value = datastructure[widget_id]
        try:
            v = str(value)
        except ValueError:
            datastructure.setError(widget_id, "cpsschemas_err_select")
            return 0
        vocabulary = self._getVocabulary(datastructure)
        if len(value)>0:
            if not vocabulary.has_key(value):
                if self.render_format == 'select' or not self.other_option:
                    datastructure.setError(widget_id, "cpsschemas_err_select")
                    return 0
        else:
            if self.is_required:
                # set error unless vocabulary holds blank values and
                # blank_value_ok_if_required is set to 1
                if vocabulary.has_key(value):
                    if not self.blank_value_ok_if_required:
                        datastructure.setError(widget_id, "cpsschemas_err_required")
                        return 0
                else:
                    datastructure.setError(widget_id, "cpsschemas_err_required")
                    return 0
        datamodel = datastructure.getDataModel()
        datamodel[self.fields[0]] = v
        return 1

    def render(self, mode, datastructure, **kw):
        """Render in mode from datastructure."""
        widget_id = self.getWidgetId()
        value = datastructure[widget_id]
        # allow int values to work
        if value is not None:
            value = str(value)
        vocabulary = self._getVocabulary(datastructure)
        portal = getToolByName(self, 'portal_url').getPortalObject()
        cpsmcat = portal.translation_service
        if mode == 'view':
            if not vocabulary.has_key(value):
                # for free input
                if value is not None:
                    return escape(value)
                else:
                    return ''
            else:
                if getattr(self, 'translated', None):
                    return escape(cpsmcat(vocabulary.getMsgid(value, value)).encode('ISO-8859-15', 'ignore'))
                else:
                    return escape(vocabulary.get(value, value))
        elif mode == 'edit':
            in_selection = 0
            in_other_selection = 0
            res = ''
            html_widget_id = self.getHtmlWidgetId()
            render_format = self.render_format
            if render_format not in self.render_formats:
                raise RuntimeError('unknown render format %s' % render_format)
            if render_format == 'select':
                res = renderHtmlTag('select',
                                    name=html_widget_id, id=html_widget_id,
                                    onchange=self.onchange or None)
            # vocabulary options
            vocabulary_items = vocabulary.items()
            if self.sorted:
                vocabulary_items.sort(key=lambda obj: obj[1].lower())
            for k, v in vocabulary_items:
                # this enable to work with vocabulary that have integer keys
                k = str(k)
                if getattr(self, 'translated', None):
                    v = cpsmcat(vocabulary.getMsgid(k, k)).encode('ISO-8859-15', 'ignore')
                if render_format == 'select':
                    kw = {'value': k, 'contents': v}
                    # do not add a selected option if it is already set
                    if value == k and not in_selection:
                        kw['selected'] = 'selected'
                        in_selection = 1
                    res += renderHtmlTag('option', **kw)
                    res += '\n'
                else:
                    kw = {'id': html_widget_id+'_'+k,
                          'type': render_format,
                          'name': html_widget_id,
                          'value': k,
                          }
                    # do not add a selected option if it is already set
                    if value == k and not in_selection:
                        kw['checked'] = 'checked'
                        in_selection = 1
                    res += renderHtmlTag('input', **kw)
                    kw = {'for': html_widget_id+'_'+k,
                          'contents': v,
                          }
                    res += renderHtmlTag('label', **kw)
                    res += '<br/>\n'
            # invalid or free selections
            if value and not in_selection:
                if render_format == 'select':
                    in_selection = 1
                    kw = {'value': value,
                          'contents': 'invalid: '+value,
                          'selected': 'selected',
                          }
                    res += renderHtmlTag('option', **kw)
                    res += '\n'
                else:
                    if self.other_option:
                        in_selection = 1
                        in_other_selection = 1
                        kw = {'id': html_widget_id+'_other_selection',
                              'type': render_format,
                              'name': html_widget_id,
                              'value':  value,
                              'checked': 'checked',
                              }
                        res += renderHtmlTag('input', **kw)
                        kw = {'for': html_widget_id+'_other_selection',
                              'contents': cpsmcat('label_other_selection').encode('ISO-8859-15', 'ignore'),
                              }
                        res += renderHtmlTag('label', **kw)
                        kw = {'type': 'text',
                              'name': html_widget_id+'_other',
                              'value': value,
                              'onchange': "document.getElementById('"+html_widget_id+"_other_selection').value = this.value",
                              'onclick': "document.getElementById('"+html_widget_id+"_other_selection').checked='checked'",
                              'size': self.other_option_display_width,
                              }
                        if self.other_option_size_max:
                            kw['maxlength'] = self.other_option_size_max
                        res += renderHtmlTag('input', **kw)
                        res += '<br/>\n'
                    else:
                        kw = {'id': html_widget_id+'_'+value,
                              'type': render_format,
                              'name': html_widget_id,
                              'value': value,
                              'disabled': 'disabled',
                              }
                        res += renderHtmlTag('input', **kw)
                        kw = {'for': html_widget_id+'_'+value,
                              'contents': 'invalid: '+value,
                              }
                        res += renderHtmlTag('label', **kw)
                        res += '<br/>\n'
            # 'other' option
            if self.other_option and not in_other_selection:
                if render_format != 'select':
                    kw = {'id': html_widget_id+'_other_selection',
                          'type': render_format,
                          'name': html_widget_id,
                          'value': '',
                          }
                    res += renderHtmlTag('input', **kw)
                    kw = {'for': html_widget_id+'_other_selection',
                          'contents': cpsmcat('label_other_selection').encode('ISO-8859-15', 'ignore'),
                          }
                    res += renderHtmlTag('label', **kw)
                    kw = {'type': 'text',
                          'name': html_widget_id+'_other',
                          'value': "",
                          'onchange': "document.getElementById('"+html_widget_id+"_other_selection').value = this.value",
                          'onclick': "document.getElementById('"+html_widget_id+"_other_selection').checked='checked'",
                          'size': self.other_option_display_width,
                          }
                    if self.other_option_size_max:
                        kw['maxlength'] = self.other_option_size_max
                    res += renderHtmlTag('input', **kw)
                    res += '<br/>\n'
            # default option
            if not self.is_required and not vocabulary.has_key(''):
                if render_format == 'select':
                    kw = {'value': '',
                          'contents': cpsmcat('label_none_selection').encode('ISO-8859-15', 'ignore'),
                          }
                    if not in_selection:
                        kw['selected'] = 'selected'
                    res += renderHtmlTag('option', **kw)
                    res += '\n'
                else:
                    kw = {'id': html_widget_id+'_empty',
                          'type': render_format,
                          'name': html_widget_id,
                          'value': '',
                          }
                    if not in_selection:
                        kw['checked'] = 'checked'
                    res += renderHtmlTag('input', **kw)
                    kw = {'for': html_widget_id+'_empty',
                          'contents': cpsmcat('label_none_selection').encode('ISO-8859-15', 'ignore'),
                          }
                    res += renderHtmlTag('label', **kw)
                    res += '<br/>\n'
            if render_format == 'select':
                res += '</select>'
            return res
        raise RuntimeError('unknown mode %s' % mode)

InitializeClass(CPSGenericSelectWidget)

widgetRegistry.register(CPSGenericSelectWidget)

##################################################

class CPSGenericMultiSelectWidget(CPSMultiSelectWidget):
    """Generic MultiSelect widget."""
    meta_type = 'Generic MultiSelect Widget'

    _properties = CPSMultiSelectWidget._properties + (
        {'id': 'render_format', 'type': 'selection', 'mode': 'w',
         'select_variable': 'render_formats',
         'label': 'Render format'},
        # Enables the possibility to add blank values to vocabulary just to
        # change the way the list is presented (using items like 'choose a
        # category' or '------------' to separate items) and not affect the way
        # the value will be validated if the widget is required.
        # Before this, if the widget was required, default behavior was to
        # accept blank values if they were in the vocabulary (e.g
        # blank_value_ok_if_required = 1)
        {'id': 'blank_value_ok_if_required', 'type': 'boolean', 'mode':'w',
         'label': "Accept blank values when validating"},
        )
    render_formats = ['select', 'radio', 'checkbox']

    render_format = render_formats[0]
    blank_value_ok_if_required = 1

    # BBB for [46171]. Remove this once an upgrade step has been written
    sorted = False

    def prepare(self, datastructure, **kw):
        """Prepare datastructure from datamodel."""
        datamodel = datastructure.getDataModel()
        value = datamodel[self.fields[0]]
        if isinstance(value, str):
            if value:
                value = [value,]
            else:
                value = []
        datastructure[self.getWidgetId()] = value


    def validate(self, datastructure, **kw):
        """Validate datastructure and update datamodel."""
        widget_id = self.getWidgetId()
        value = datastructure[widget_id]
        if not isinstance(value, (list, tuple)):
            datastructure.setError(widget_id, "cpsschemas_err_multiselect")
            return 0
        vocabulary = self._getVocabulary(datastructure)
        v = []
        for i in value:
            if i != '':
                try:
                    i = str(i)
                except ValueError:
                    datastructure.setError(widget_id, "cpsschemas_err_multiselect")
                    return 0
                if not vocabulary.has_key(i):
                    datastructure.setError(widget_id, "cpsschemas_err_multiselect")
                    return 0
            else:
                if self.is_required:
                    # set error unless vocabulary holds blank values and
                    # blank_value_ok_if_required is set to 1
                    if vocabulary.has_key(i):
                        if not self.blank_value_ok_if_required:
                            datastructure.setError(widget_id, "cpsschemas_err_required")
                            return 0
                    else:
                        datastructure.setError(widget_id, "cpsschemas_err_required")
                        return 0
            v.append(i)
        if self.is_required and not len(v):
            datastructure.setError(widget_id, "cpsschemas_err_required")
            return 0
        datamodel = datastructure.getDataModel()
        datamodel[self.fields[0]] = v
        return 1

    def render(self, mode, datastructure, **kw):
        """Render in mode from datastructure."""
        widget_id = self.getWidgetId()
        value = datastructure[widget_id]
        vocabulary = self._getVocabulary(datastructure)
        portal = getToolByName(self, 'portal_url').getPortalObject()
        cpsmcat = portal.translation_service
        if mode == 'view':
            if not value:
                # XXX L10N empty format may be subject to i18n.
                return self.format_empty
            # XXX customize view mode, lots of displays are possible
            else:
                return self.getEntriesHtml(value, vocabulary, self.translated)
        elif mode == 'edit':
            in_selection = 0
            res = ''
            html_widget_id = self.getHtmlWidgetId()
            render_format = self.render_format
            if render_format not in self.render_formats:
                raise RuntimeError('unknown render format %s' % render_format)
            if render_format == 'select':
                kw = {'name': html_widget_id + ':list',
                      'id': html_widget_id,
                      'multiple': 'multiple',
                      }
                if self.size:
                    kw['size'] = self.size
                res = renderHtmlTag('select', **kw)
            # vocabulary options
            vocabulary_items = vocabulary.items()
            if self.sorted:
                vocabulary_items.sort(key=lambda obj: obj[1].lower())
            for k, v in vocabulary_items:
                if getattr(self, 'translated', None):
                    v = cpsmcat(vocabulary.getMsgid(k, k)).encode('ISO-8859-15', 'ignore')
                if render_format == 'select':
                    kw = {'value': k, 'contents': v}
                    if k in value:
                        kw['selected'] = 'selected'
                        in_selection = 1
                    res += renderHtmlTag('option', **kw)
                    res += '\n'
                else:
                    kw = {'id': html_widget_id+'_'+k,
                          'type': render_format,
                          'name': html_widget_id+':list',
                          'value': k,
                          }
                    if k in value:
                        kw['checked'] = 'checked'
                        in_selection = 1
                    res += renderHtmlTag('input', **kw)
                    kw = {'for': html_widget_id+'_'+k,
                          'contents': v,
                          }
                    res += renderHtmlTag('label', **kw)
                    res += '<br/>\n'
            # invalid selections
            for value_item in value:
                if value_item and value_item not in vocabulary.keys():
                    if render_format == 'select':
                        kw = {'value': value_item,
                              # XXX missing i18n for invalid
                              'contents': 'invalid: ' + value_item,
                              'selected': 'selected',
                              }
                        res += renderHtmlTag('option', **kw)
                        res += '\n'
                    else:
                        kw = {'id': html_widget_id+'_'+value_item,
                              'type': render_format,
                              'name': html_widget_id+':list',
                              'value': value_item,
                              'disabled': 'disabled',
                              }
                        res += renderHtmlTag('input', **kw)
                        kw = {'for': html_widget_id+'_'+value_item,
                              'contents': 'invalid: '+value_item,
                              }
                        res += renderHtmlTag('label', **kw)
                        res += '<br/>\n'
            # default option
            if not self.is_required and not vocabulary.has_key(''):
                if render_format == 'select':
                    kw = {'value': '',
                          'contents': cpsmcat('label_none_selection').encode('ISO-8859-15', 'ignore'),
                          }
                    if not in_selection:
                        kw['selected'] = 'selected'
                    res += renderHtmlTag('option', **kw)
                    res += '\n'
                # not interesting to have a default choice for checkboxes
                elif render_format == 'radio':
                    kw = {'id': html_widget_id+'_empty',
                          'type': render_format,
                          'name': html_widget_id+':list',
                          'value': '',
                          }
                    if not in_selection:
                        kw['checked'] = 'checked'
                    res += renderHtmlTag('input', **kw)
                    kw = {'for': html_widget_id+'_empty',
                          'contents': cpsmcat('label_none_selection').encode('ISO-8859-15', 'ignore'),
                          }
                    res += renderHtmlTag('label', **kw)
                    res += '<br/>\n'
            if render_format == 'select':
                res += '</select>'
            default_tag = renderHtmlTag('input',
                                        type='hidden',
                                        name=html_widget_id+':tokens:default',
                                        value='')
            return default_tag+res
        raise RuntimeError('unknown mode %s' % mode)

InitializeClass(CPSGenericMultiSelectWidget)

widgetRegistry.register(CPSGenericMultiSelectWidget)

##################################################

class CPSRangeListWidget(CPSWidget):
    """Range List widget."""
    meta_type = 'Range List Widget'

    field_types = ('CPS Range List Field',)
    field_inits = ({'is_searchabletext': 1,},)

    _properties = CPSWidget._properties + (
        {'id': 'display_width', 'type': 'int', 'mode': 'w',
         'label': 'Display width'},
        {'id': 'format_empty', 'type': 'string', 'mode': 'w',
         'label': 'Format for empty list'},
        )

    display_width = 0
    format_empty = ''

    def prepare(self, datastructure, **kw):
        """Prepare datastructure from datamodel."""
        datamodel = datastructure.getDataModel()
        value = datamodel[self.fields[0]]
        datastructure[self.getWidgetId()] = value


    def validate(self, datastructure, **kw):
        """Validate datastructure and update datamodel."""
        widget_id = self.getWidgetId()
        value = datastructure[widget_id]
        if not isinstance(value, list):
            datastructure.setError(widget_id, "cpsschemas_err_rangelist")
            return 0
        v = []
        for i in value:
            i = i.split('-')
            if len(i) == 1:
                try:
                    i[0] = int(i[0])
                except ValueError:
                    datastructure.setError(widget_id, "cpsschemas_err_rangelist")
                    return 0
                v.append((i[0],))
            elif len(i) == 2:
                try:
                    i[0] = int(i[0])
                    i[1] = int(i[1])
                except ValueError:
                    datastructure.setError(widget_id, "cpsschemas_err_rangelist")
                    return 0
                v.append((i[0], i[1]))
            else:
                datastructure.setError(widget_id, "cpsschemas_err_rangelist")
                return 0
        if self.is_required and not len(v):
            datastructure.setError(widget_id, "cpsschemas_err_required")
            return 0
        datamodel = datastructure.getDataModel()
        datamodel[self.fields[0]] = v
        return 1

    def render(self, mode, datastructure, **kw):
        """Render in mode from datastructure."""
        value = datastructure[self.getWidgetId()]
        res = ''

        for i in value:
            if isinstance(i, str):
                res += i + ' '
            elif len(i) == 1:
                res += str(i[0]) + ' '
            else:
                res += str(i[0]) + '-' + str(i[1]) + ' '

        if mode == 'view':
            return escape(res)
        elif mode == 'edit':
            return renderHtmlTag('input',
                                 type='text',
                                 id=self.getHtmlWidgetId(),
                                 name=self.getHtmlWidgetId()+":tokens",
                                 value=escape(res),
                                 size=self.display_width,
                                 )
        raise RuntimeError('unknown mode %s' % mode)

InitializeClass(CPSRangeListWidget)

widgetRegistry.register(CPSRangeListWidget)

##################################################

class CPSDocumentLanguageSelectWidget(CPSWidget):
    """Document Language Selection widget."""
    meta_type = 'Document Language Select Widget'

    field_types = ('CPS String Field',)
    field_inits = ({'is_searchabletext': 0,},)

    def prepare(self, datastructure, **kw):
        """Prepare datastructure from datamodel."""
        datamodel = datastructure.getDataModel()
        value = datamodel[self.fields[0]]
        datastructure[self.getWidgetId()] = value


    def validate(self, datastructure, **kw):
        """Validate datastructure and update datamodel."""
        return 1

    def render(self, mode, datastructure, **kw):
        """Render in mode from datastructure."""
        res = ''
        datamodel = datastructure.getDataModel()
        proxy = datamodel.getProxy()
        if proxy is None:
            return res
        proxy_url = proxy.absolute_url()
        languages = proxy.getProxyLanguages()
        if len(languages) <= 1:
            return res
        current_language = datamodel[self.fields[0]]
        translation_service = getToolByName(self, 'translation_service')
        if translation_service is not None:
            mcat = translation_service
        else:
            def mcat(msgid):
                return msgid

        for language in languages:
            language_title = mcat('label_language_%s'% language).encode(
                'ISO-8859-15', 'ignore')
            contents = language
            if current_language != language:
                contents = renderHtmlTag('a', href='%s/switchLanguage/%s' %
                                         (proxy_url, language),
                                         title=language_title,
                                         contents=contents,
                                         css_class='availableLang')
            else:
                contents = renderHtmlTag('span', contents=contents,
                                         title=language_title,
                                         css_class='selectedLang')
            contents += ' '
            res += renderHtmlTag('li', contents=contents)
        res = renderHtmlTag('ul', contents=res)
        res = '<div class="headerActions">%s</div>' % res
        return res

InitializeClass(CPSDocumentLanguageSelectWidget)

widgetRegistry.register(CPSDocumentLanguageSelectWidget)

##################################################

class CPSSubjectWidget(CPSMultiSelectWidget):
    """A widget featuring links to items by subject.

    The CPS Subject Widget is like the CPS MultiSelect Widget from which it
    derives, except in "view" mode where the listed entries have link on them
    to other documents on the portal which have the same subjects.
    """
    meta_type = 'Subject Widget'

    def getEntriesHtml(self, entries, vocabulary, translated=False):
        entries_html_list = []
        if translated:
            cpsmcat = getToolByName(self, 'translation_service', None)
            if cpsmcat is None:
                translated = False
        for subject_name in entries:
            if translated:
                subject_label = cpsmcat(
                    vocabulary.getMsgid(subject_name, subject_name),
                    subject_name).encode('ISO-8859-15', 'ignore')
                entries_html_list.append(self.getSubjectSearchLink(
                    subject_name, subject_label))
            else:
                entries_html_list.append(
                    self.getSubjectSearchLink(subject_name,
                                              subject_name))
        return ', '.join(entries_html_list)

    def getSubjectSearchLink(self, subject_name, subject_label):
        """Return an HTML link for the subject name with the given label."""
        return ('<a href="%s">%s</a>'
                % (self.getSubjectSearchUrl(escape(subject_name)),
                   escape(subject_label)))

    def getSubjectSearchUrl(self, subject_name):
        """Return the subject search URL.

        The provided links are actually requests to the portal search engine.
        """
        return "%s/search_form?Subject=%s" % (self.portal_url(), subject_name)

InitializeClass(CPSSubjectWidget)

widgetRegistry.register(CPSSubjectWidget)

##################################################

class CPSFlashWidget(CPSAttachedFileWidget):
    """Flash Widget.
    """
    meta_type = 'Flash Widget'

    field_types = ('CPS File Field',   # File
                   'CPS String Field', # Caption (optional)
                   'CPS File Field')   # Preview (optional)
    field_inits = ({'is_searchabletext': 0,
                    'suffix_text': '_f1', # _f# are autocomputed field ext
                    'suffix_html': '_f2',},
                   {'is_searchabletext': 1}, {},
                   )

    def _flash_validate(self, datastructure, **kw):
        """Check that this is a Flash animation
        """
        widget_id = self.getWidgetId()
        choice = datastructure[widget_id+'_choice']
        if choice == 'change':
            fileinfo = self.getFileInfo(datastructure)
            if fileinfo is not None:
                cond = fileinfo['mimetype'] == 'application/x-shockwave-flash'
                if not cond:
                    datastructure.setError(self.getWidgetId(),
                                           'cpsschemas_err_file')
                    return False
        return True

    def validate(self, datastructure, **kw):
        """Validate datastructure and update datamodel.
        """
        return (CPSAttachedFileWidget.validate(self, datastructure, **kw) and
                self._flash_validate(datastructure, **kw))

    def render(self, mode, datastructure, **kw):
        """Render this widget from the datastructure or datamodel.
        """
        render_method = 'widget_flash_render'
        meth = getattr(self, render_method, None)

        if meth is None:
            raise RuntimeError("Unknown Render Method %s for widget type %s"
                               % (render_method, self.getId()))

        file = datastructure[self.getWidgetId()]

        # Get common File props
        file_info = self.getFileInfo(datastructure)

        # Update with speficic swf header props
        if file is not None:
            try:
                file_info.update(analyseContent(
                    str(file.read()), file_info['size']))
            except TypeError:
                pass

        return meth(mode=mode, datastructure=datastructure, **file_info)

InitializeClass(CPSFlashWidget)

widgetRegistry.register(CPSFlashWidget)

##################################################

class CPSLinkWidget(CPSProgrammerCompoundWidget):
    """Widget for an HTTP link.
    """
    meta_type = 'Link Widget'
    render_method = 'widget_link_render'
    prepare_validate_method = ''

InitializeClass(CPSLinkWidget)

widgetRegistry.register(CPSLinkWidget)


class CPSTextImageWidget(CPSProgrammerCompoundWidget):
    """Widget for text+image.
    """
    meta_type = 'Text Image Widget'
    render_method = 'widget_textimage_render'
    prepare_validate_method = 'widget_textimage_prepare_validate'

InitializeClass(CPSTextImageWidget)

widgetRegistry.register(CPSTextImageWidget)


class CPSImageLinkWidget(CPSProgrammerCompoundWidget):
    """
    """
    meta_type = 'Image Link Widget'
    render_method = 'widget_imagelink_render'
    prepare_validate_method = 'widget_imagelink_prepare_validate'

InitializeClass(CPSImageLinkWidget)

widgetRegistry.register(CPSImageLinkWidget)

class CPSAutocompletionStringWidget(CPSStringWidget):
    """Autocompletion String widget."""
    meta_type = 'Autocompletion String Widget'
    server_method = ''

    _properties = CPSStringWidget._properties + (
        {'id': 'server_method', 'type': 'string', 'mode': 'w',
         'label': 'Server method',},)

    def render(self, mode, datastructure, **kw):
        """Render in mode from datastructure."""
        render_method = 'widget_autocompletion_string_render'
        meth = getattr(self, render_method, None)
        if meth is None:
            raise RuntimeError("Unknown Render Method %s for widget type %s"
                               % (render_method, self.getId()))
        if mode not in ('view', 'edit'):
            raise RuntimeError('unknown mode %s' % mode)

        value = datastructure[self.getWidgetId()]
        widget_id = self.getWidgetId()
        html_widget_id = self.getHtmlWidgetId()

        return meth(mode=mode, widget_id=widget_id,value=value,
                    size=self.display_width, server_method=self.server_method,
                    html_widget_id=html_widget_id)

InitializeClass(CPSAutocompletionStringWidget)

widgetRegistry.register(CPSAutocompletionStringWidget)