525 lines
17 KiB
Python
525 lines
17 KiB
Python
# -*- coding: utf-8 -*-
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# Part of Odoo, Flectra. See LICENSE file for full copyright and licensing details.
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"""
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Web_editor-context rendering needs to add some metadata to rendered and allow to edit fields,
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as well as render a few fields differently.
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Also, adds methods to convert values back to Flectra models.
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"""
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import ast
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import base64
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import io
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import itertools
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import json
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import logging
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import os
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import re
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import hashlib
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import pytz
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import requests
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from dateutil import parser
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from lxml import etree, html
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from PIL import Image as I
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from werkzeug import urls
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import flectra.modules
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from flectra import api, models, fields
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from flectra.tools import ustr, pycompat
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from flectra.tools import html_escape as escape
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from flectra.addons.base.ir import ir_qweb
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REMOTE_CONNECTION_TIMEOUT = 2.5
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logger = logging.getLogger(__name__)
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class QWeb(models.AbstractModel):
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""" QWeb object for rendering editor stuff
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"""
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_inherit = 'ir.qweb'
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# compile directives
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def _compile_directive_snippet(self, el, options):
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el.set('t-call', el.attrib.pop('t-snippet'))
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name = self.env['ir.ui.view'].search([('key', '=', el.attrib.get('t-call'))]).display_name
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thumbnail = el.attrib.pop('t-thumbnail', "oe-thumbnail")
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div = u'<div name="%s" data-oe-type="snippet" data-oe-thumbnail="%s">' % (
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escape(pycompat.to_text(name)),
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escape(pycompat.to_text(thumbnail))
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)
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return [self._append(ast.Str(div))] + self._compile_node(el, options) + [self._append(ast.Str(u'</div>'))]
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def _compile_directive_install(self, el, options):
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if self.user_has_groups('base.group_system'):
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module = self.env['ir.module.module'].search([('name', '=', el.attrib.get('t-install'))])
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if not module or module.state == 'installed':
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return []
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name = el.attrib.get('string') or 'Snippet'
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thumbnail = el.attrib.pop('t-thumbnail', 'oe-thumbnail')
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div = u'<div name="%s" data-oe-type="snippet" data-module-id="%s" data-oe-thumbnail="%s"><section/></div>' % (
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escape(pycompat.to_text(name)),
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module.id,
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escape(pycompat.to_text(thumbnail))
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)
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return [self._append(ast.Str(div))]
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else:
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return []
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def _compile_directive_tag(self, el, options):
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if el.get('t-placeholder'):
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el.set('t-att-placeholder', el.attrib.pop('t-placeholder'))
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return super(QWeb, self)._compile_directive_tag(el, options)
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# order and ignore
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def _directives_eval_order(self):
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directives = super(QWeb, self)._directives_eval_order()
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directives.insert(directives.index('call'), 'snippet')
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directives.insert(directives.index('call'), 'install')
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return directives
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#------------------------------------------------------
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# QWeb fields
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#------------------------------------------------------
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class Field(models.AbstractModel):
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_name = 'ir.qweb.field'
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_inherit = 'ir.qweb.field'
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@api.model
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def attributes(self, record, field_name, options, values):
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attrs = super(Field, self).attributes(record, field_name, options, values)
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field = record._fields[field_name]
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placeholder = options.get('placeholder') or getattr(field, 'placeholder', None)
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if placeholder:
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attrs['placeholder'] = placeholder
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if options['translate'] and field.type in ('char', 'text'):
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name = "%s,%s" % (record._name, field_name)
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domain = [('name', '=', name), ('res_id', '=', record.id), ('type', '=', 'model'), ('lang', '=', options.get('lang'))]
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translation = record.env['ir.translation'].search(domain, limit=1)
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attrs['data-oe-translation-state'] = translation and translation.state or 'to_translate'
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return attrs
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def value_from_string(self, value):
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return value
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@api.model
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def from_html(self, model, field, element):
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return self.value_from_string(element.text_content().strip())
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class Integer(models.AbstractModel):
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_name = 'ir.qweb.field.integer'
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_inherit = 'ir.qweb.field.integer'
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value_from_string = int
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class Float(models.AbstractModel):
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_name = 'ir.qweb.field.float'
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_inherit = 'ir.qweb.field.float'
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@api.model
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def from_html(self, model, field, element):
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lang = self.user_lang()
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value = element.text_content().strip()
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return float(value.replace(lang.thousands_sep, '')
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.replace(lang.decimal_point, '.'))
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class ManyToOne(models.AbstractModel):
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_name = 'ir.qweb.field.many2one'
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_inherit = 'ir.qweb.field.many2one'
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@api.model
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def attributes(self, record, field_name, options, values):
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attrs = super(ManyToOne, self).attributes(record, field_name, options, values)
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many2one = getattr(record, field_name)
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if many2one:
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attrs['data-oe-many2one-id'] = many2one.id
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attrs['data-oe-many2one-model'] = many2one._name
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return attrs
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@api.model
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def from_html(self, model, field, element):
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Model = self.env[element.get('data-oe-model')]
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id = int(element.get('data-oe-id'))
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M2O = self.env[field.comodel_name]
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field_name = element.get('data-oe-field')
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many2one_id = int(element.get('data-oe-many2one-id'))
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record = many2one_id and M2O.browse(many2one_id)
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if record and record.exists():
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# save the new id of the many2one
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Model.browse(id).write({field_name: many2one_id})
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# not necessary, but might as well be explicit about it
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return None
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class Contact(models.AbstractModel):
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_name = 'ir.qweb.field.contact'
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_inherit = 'ir.qweb.field.contact'
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@api.model
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def attributes(self, record, field_name, options, values):
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attrs = super(Contact, self).attributes(record, field_name, options, values)
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options.pop('template_options') # remove options not specific to this widget
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attrs['data-oe-contact-options'] = json.dumps(options)
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return attrs
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# helper to call the rendering of contact field
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@api.model
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def get_record_to_html(self, ids, options=None):
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return self.value_to_html(self.env['res.partner'].browse(ids[0]), options=options)
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class Date(models.AbstractModel):
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_name = 'ir.qweb.field.date'
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_inherit = 'ir.qweb.field.date'
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@api.model
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def attributes(self, record, field_name, options, values):
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attrs = super(Date, self).attributes(record, field_name, options, values)
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attrs['data-oe-original'] = record[field_name]
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return attrs
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@api.model
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def from_html(self, model, field, element):
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value = element.text_content().strip()
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if not value:
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return False
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return value
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class DateTime(models.AbstractModel):
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_name = 'ir.qweb.field.datetime'
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_inherit = 'ir.qweb.field.datetime'
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@api.model
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def attributes(self, record, field_name, options, values):
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attrs = super(DateTime, self).attributes(record, field_name, options, values)
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value = record[field_name]
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if isinstance(value, pycompat.string_types):
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value = fields.Datetime.from_string(value)
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if value:
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# convert from UTC (server timezone) to user timezone
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value = fields.Datetime.context_timestamp(self, timestamp=value)
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value = fields.Datetime.to_string(value)
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attrs['data-oe-original'] = value
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return attrs
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@api.model
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def from_html(self, model, field, element):
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value = element.text_content().strip()
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if not value:
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return False
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# parse from string to datetime
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dt = parser.parse(value)
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# convert back from user's timezone to UTC
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tz_name = self.env.context.get('tz') or self.env.user.tz
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if tz_name:
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try:
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user_tz = pytz.timezone(tz_name)
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utc = pytz.utc
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dt = user_tz.localize(dt).astimezone(utc)
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except Exception:
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logger.warn(
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"Failed to convert the value for a field of the model"
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" %s back from the user's timezone (%s) to UTC",
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model, tz_name,
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exc_info=True)
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# format back to string
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return fields.Datetime.to_string(dt)
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class Text(models.AbstractModel):
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_name = 'ir.qweb.field.text'
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_inherit = 'ir.qweb.field.text'
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@api.model
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def from_html(self, model, field, element):
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return html_to_text(element)
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class Selection(models.AbstractModel):
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_name = 'ir.qweb.field.selection'
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_inherit = 'ir.qweb.field.selection'
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@api.model
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def from_html(self, model, field, element):
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value = element.text_content().strip()
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selection = field.get_description(self.env)['selection']
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for k, v in selection:
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if isinstance(v, str):
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v = ustr(v)
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if value == v:
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return k
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raise ValueError(u"No value found for label %s in selection %s" % (
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value, selection))
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class HTML(models.AbstractModel):
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_name = 'ir.qweb.field.html'
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_inherit = 'ir.qweb.field.html'
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@api.model
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def from_html(self, model, field, element):
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content = []
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if element.text:
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content.append(element.text)
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content.extend(html.tostring(child, encoding='unicode')
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for child in element.iterchildren(tag=etree.Element))
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return '\n'.join(content)
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class Image(models.AbstractModel):
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"""
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Widget options:
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``class``
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set as attribute on the generated <img> tag
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"""
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_name = 'ir.qweb.field.image'
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_inherit = 'ir.qweb.field.image'
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local_url_re = re.compile(r'^/(?P<module>[^]]+)/static/(?P<rest>.+)$')
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@api.model
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def from_html(self, model, field, element):
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url = element.find('img').get('src')
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url_object = urls.url_parse(url)
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if url_object.path.startswith('/web/image'):
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# url might be /web/image/<model>/<id>[_<checksum>]/<field>[/<width>x<height>]
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fragments = url_object.path.split('/')
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query = url_object.decode_query()
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if fragments[3].isdigit():
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model = 'ir.attachment'
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oid = fragments[3]
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field = 'datas'
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else:
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model = query.get('model', fragments[3])
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oid = query.get('id', fragments[4].split('_')[0])
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field = query.get('field', fragments[5])
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item = self.env[model].browse(int(oid))
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return item[field]
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if self.local_url_re.match(url_object.path):
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return self.load_local_url(url)
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return self.load_remote_url(url)
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def load_local_url(self, url):
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match = self.local_url_re.match(urls.url_parse(url).path)
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rest = match.group('rest')
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for sep in os.sep, os.altsep:
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if sep and sep != '/':
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rest.replace(sep, '/')
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path = flectra.modules.get_module_resource(
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match.group('module'), 'static', *(rest.split('/')))
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if not path:
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return None
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try:
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with open(path, 'rb') as f:
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# force complete image load to ensure it's valid image data
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image = I.open(f)
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image.load()
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f.seek(0)
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return base64.b64encode(f.read())
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except Exception:
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logger.exception("Failed to load local image %r", url)
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return None
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def load_remote_url(self, url):
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try:
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# should probably remove remote URLs entirely:
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# * in fields, downloading them without blowing up the server is a
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# challenge
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# * in views, may trigger mixed content warnings if HTTPS CMS
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# linking to HTTP images
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# implement drag & drop image upload to mitigate?
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req = requests.get(url, timeout=REMOTE_CONNECTION_TIMEOUT)
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# PIL needs a seekable file-like image so wrap result in IO buffer
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image = I.open(io.BytesIO(req.content))
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# force a complete load of the image data to validate it
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image.load()
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except Exception:
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logger.exception("Failed to load remote image %r", url)
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return None
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# don't use original data in case weird stuff was smuggled in, with
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# luck PIL will remove some of it?
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out = io.BytesIO()
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image.save(out, image.format)
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return base64.b64encode(out.getvalue())
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class Monetary(models.AbstractModel):
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_name = 'ir.qweb.field.monetary'
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_inherit = 'ir.qweb.field.monetary'
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@api.model
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def from_html(self, model, field, element):
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lang = self.user_lang()
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value = element.find('span').text.strip()
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return float(value.replace(lang.thousands_sep, '')
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.replace(lang.decimal_point, '.'))
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class Duration(models.AbstractModel):
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_name = 'ir.qweb.field.duration'
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_inherit = 'ir.qweb.field.duration'
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@api.model
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def attributes(self, record, field_name, options, values):
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attrs = super(Duration, self).attributes(record, field_name, options, values)
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attrs['data-oe-original'] = record[field_name]
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return attrs
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@api.model
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def from_html(self, model, field, element):
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value = element.text_content().strip()
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# non-localized value
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return float(value)
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class RelativeDatetime(models.AbstractModel):
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_name = 'ir.qweb.field.relative'
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_inherit = 'ir.qweb.field.relative'
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# get formatting from ir.qweb.field.relative but edition/save from datetime
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class QwebView(models.AbstractModel):
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_name = 'ir.qweb.field.qweb'
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_inherit = 'ir.qweb.field.qweb'
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def html_to_text(element):
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""" Converts HTML content with HTML-specified line breaks (br, p, div, ...)
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in roughly equivalent textual content.
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Used to replace and fixup the roundtripping of text and m2o: when using
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libxml 2.8.0 (but not 2.9.1) and parsing HTML with lxml.html.fromstring
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whitespace text nodes (text nodes composed *solely* of whitespace) are
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stripped out with no recourse, and fundamentally relying on newlines
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being in the text (e.g. inserted during user edition) is probably poor form
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anyway.
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-> this utility function collapses whitespace sequences and replaces
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nodes by roughly corresponding linebreaks
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* p are pre-and post-fixed by 2 newlines
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* br are replaced by a single newline
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* block-level elements not already mentioned are pre- and post-fixed by
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a single newline
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ought be somewhat similar (but much less high-tech) to aaronsw's html2text.
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the latter produces full-blown markdown, our text -> html converter only
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replaces newlines by <br> elements at this point so we're reverting that,
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and a few more newline-ish elements in case the user tried to add
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newlines/paragraphs into the text field
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:param element: lxml.html content
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:returns: corresponding pure-text output
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"""
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# output is a list of str | int. Integers are padding requests (in minimum
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# number of newlines). When multiple padding requests, fold them into the
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# biggest one
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output = []
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_wrap(element, output)
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# remove any leading or tailing whitespace, replace sequences of
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# (whitespace)\n(whitespace) by a single newline, where (whitespace) is a
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# non-newline whitespace in this case
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return re.sub(
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r'[ \t\r\f]*\n[ \t\r\f]*',
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'\n',
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''.join(_realize_padding(output)).strip())
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_PADDED_BLOCK = set('p h1 h2 h3 h4 h5 h6'.split())
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# https://developer.mozilla.org/en-US/docs/HTML/Block-level_elements minus p
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_MISC_BLOCK = set((
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'address article aside audio blockquote canvas dd dl div figcaption figure'
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' footer form header hgroup hr ol output pre section tfoot ul video'
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).split())
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def _collapse_whitespace(text):
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""" Collapses sequences of whitespace characters in ``text`` to a single
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space
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"""
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return re.sub('\s+', ' ', text)
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def _realize_padding(it):
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""" Fold and convert padding requests: integers in the output sequence are
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requests for at least n newlines of padding. Runs thereof can be collapsed
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into the largest requests and converted to newlines.
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"""
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padding = 0
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for item in it:
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if isinstance(item, int):
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padding = max(padding, item)
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continue
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if padding:
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yield '\n' * padding
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padding = 0
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yield item
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# leftover padding irrelevant as the output will be stripped
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def _wrap(element, output, wrapper=u''):
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""" Recursively extracts text from ``element`` (via _element_to_text), and
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wraps it all in ``wrapper``. Extracted text is added to ``output``
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:type wrapper: basestring | int
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"""
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output.append(wrapper)
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if element.text:
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output.append(_collapse_whitespace(element.text))
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for child in element:
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_element_to_text(child, output)
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output.append(wrapper)
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def _element_to_text(e, output):
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if e.tag == 'br':
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output.append(u'\n')
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elif e.tag in _PADDED_BLOCK:
|
|
_wrap(e, output, 2)
|
|
elif e.tag in _MISC_BLOCK:
|
|
_wrap(e, output, 1)
|
|
else:
|
|
# inline
|
|
_wrap(e, output)
|
|
|
|
if e.tail:
|
|
output.append(_collapse_whitespace(e.tail))
|