535 lines
20 KiB
Python
535 lines
20 KiB
Python
#This file is part of Tryton. The COPYRIGHT file at the top level of
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#this repository contains the full copyright notices and license terms.
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from lxml import etree
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from functools import wraps
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import copy
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from trytond.model import Model
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from trytond.tools import safe_eval, ClassProperty
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from trytond.pyson import PYSONEncoder, CONTEXT
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from trytond.transaction import Transaction
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from trytond.cache import Cache
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from trytond.pool import Pool
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from trytond.exceptions import UserError
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from trytond.rpc import RPC
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__all__ = ['ModelView']
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def _find(tree, element):
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if element.tag == 'xpath':
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res = tree.xpath(element.get('expr'))
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if res:
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return res[0]
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return None
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def _inherit_apply(src, inherit):
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tree_src = etree.fromstring(src)
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tree_inherit = etree.fromstring(inherit)
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root_inherit = tree_inherit.getroottree().getroot()
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for element2 in root_inherit:
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if element2.tag != 'xpath':
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continue
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element = _find(tree_src, element2)
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if element is not None:
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pos = element2.get('position', 'inside')
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if pos == 'replace':
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parent = element.getparent()
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enext = element.getnext()
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if enext is not None:
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for child in element2:
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index = parent.index(enext)
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parent.insert(index, child)
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else:
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parent.extend(element2.getchildren())
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parent.remove(element)
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elif pos == 'replace_attributes':
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child = element2.getchildren()[0]
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for attr in child.attrib:
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element.set(attr, child.get(attr))
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elif pos == 'inside':
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element.extend(element2.getchildren())
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elif pos == 'after':
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parent = element.getparent()
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enext = element.getnext()
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if enext is not None:
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for child in element2:
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index = parent.index(enext)
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parent.insert(index, child)
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else:
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parent.extend(element2.getchildren())
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elif pos == 'before':
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parent = element.getparent()
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for child in element2:
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index = parent.index(element)
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parent.insert(index, child)
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else:
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raise AttributeError(
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'Unknown position in inherited view %s!' % pos)
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else:
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raise AttributeError(
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'Couldn\'t find tag (%s: %s) in parent view!'
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% (element2.tag, element2.get('expr')))
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return etree.tostring(tree_src, encoding='utf-8')
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class ModelView(Model):
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"""
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Define a model with views in Tryton.
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"""
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__modules_list = None # Cache for the modules list sorted by dependency
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_fields_view_get_cache = Cache('modelview.fields_view_get')
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_view_toolbar_get_cache = Cache('modelview.view_toolbar_get')
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@staticmethod
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def _reset_modules_list():
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ModelView.__modules_list = None
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@ClassProperty
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@classmethod
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def _modules_list(cls):
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from trytond.modules import create_graph, get_module_list
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if ModelView.__modules_list:
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return ModelView.__modules_list
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graph = create_graph(get_module_list())[0]
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ModelView.__modules_list = [x.name for x in graph] + [None]
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return ModelView.__modules_list
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@classmethod
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def __setup__(cls):
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super(ModelView, cls).__setup__()
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cls.__rpc__['fields_view_get'] = RPC()
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cls.__rpc__['view_toolbar_get'] = RPC()
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cls._buttons = {}
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@classmethod
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def fields_view_get(cls, view_id=None, view_type='form'):
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'''
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Return a view definition.
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If view_id is None the first one will be used of view_type.
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The definition is a dictionary with keys:
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- model: the model name
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- arch: the xml description of the view
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- fields: a dictionary with the definition of each field in the view
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'''
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key = (cls.__name__, view_id, view_type)
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result = cls._fields_view_get_cache.get(key)
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if result:
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return result
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result = {'model': cls.__name__}
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pool = Pool()
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View = pool.get('ir.ui.view')
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test = True
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model = True
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view = None
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inherit_view_id = False
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while test:
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if view_id:
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domain = [('id', '=', view_id)]
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if model:
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domain.append(('model', '=', cls.__name__))
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views = View.search(domain, order=[])
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else:
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domain = [
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('model', '=', cls.__name__),
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('type', '=', view_type),
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]
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order = [
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('inherit', 'DESC'),
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('priority', 'ASC'),
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('id', 'ASC'),
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]
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views = View.search(domain, order=order)
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if not views:
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break
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view = views[0]
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test = view.inherit
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if test:
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inherit_view_id = view.id
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view_id = test.id if test else view.id
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model = False
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# if a view was found
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if view:
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result['type'] = view.type
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result['view_id'] = view_id
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result['arch'] = view.arch
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result['field_childs'] = view.field_childs
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# Check if view is not from an inherited model
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if view.model != cls.__name__:
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Inherit = pool.get(view.model)
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result['arch'] = Inherit.fields_view_get(
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result['view_id'])['arch']
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view_id = inherit_view_id
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# get all views which inherit from (ie modify) this view
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views = View.search([
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'OR', [
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('inherit', '=', view_id),
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('model', '=', cls.__name__),
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], [
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('id', '=', view_id),
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('inherit', '!=', None),
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],
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],
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order=[
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('priority', 'ASC'),
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('id', 'ASC'),
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])
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raise_p = False
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while True:
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try:
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views.sort(key=lambda x:
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cls._modules_list.index(x.module or None))
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break
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except ValueError:
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if raise_p:
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raise
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# There is perhaps a new module in the directory
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ModelView._reset_modules_list()
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raise_p = True
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for view in views:
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if view.domain:
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if not safe_eval(view.domain,
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{'context': Transaction().context}):
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continue
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if not view.arch or not view.arch.strip():
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continue
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result['arch'] = _inherit_apply(result['arch'], view.arch)
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# otherwise, build some kind of default view
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else:
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if view_type == 'form':
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res = cls.fields_get()
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xml = '''<?xml version="1.0"?>''' \
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'''<form string="%s" col="4">''' % (cls.__doc__,)
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for i in res:
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if i in ('create_uid', 'create_date',
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'write_uid', 'write_date', 'id', 'rec_name'):
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continue
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if res[i]['type'] not in ('one2many', 'many2many'):
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xml += '<label name="%s"/>' % (i,)
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xml += '<field name="%s"/>' % (i,)
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if res[i]['type'] == 'text':
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xml += "<newline/>"
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else:
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xml += '<field name="%s" colspan="4"/>' % (i,)
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xml += "</form>"
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elif view_type == 'tree':
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field = 'id'
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if cls._rec_name in cls._fields:
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field = cls._rec_name
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xml = '''<?xml version="1.0"?>''' \
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'''<tree string="%s"><field name="%s"/></tree>''' \
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% (cls.__doc__, field)
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else:
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xml = ''
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result['type'] = view_type
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result['arch'] = xml
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result['field_childs'] = None
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result['view_id'] = 0
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# Update arch and compute fields from arch
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parser = etree.XMLParser(remove_blank_text=True)
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tree = etree.fromstring(result['arch'], parser)
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xarch, xfields = cls._view_look_dom_arch(tree, result['type'],
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result['field_childs'])
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result['arch'] = xarch
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result['fields'] = xfields
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cls._fields_view_get_cache.set(key, result)
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return result
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@classmethod
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def view_toolbar_get(cls):
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"""
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Returns the model specific actions.
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A dictionary with keys:
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- print: a list of available reports
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- action: a list of available actions
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- relate: a list of available relations
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"""
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Action = Pool().get('ir.action.keyword')
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key = (cls.__name__, repr(Transaction().context))
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result = cls._view_toolbar_get_cache.get(key)
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if result:
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return result
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prints = Action.get_keyword('form_print', (cls.__name__, -1))
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actions = Action.get_keyword('form_action', (cls.__name__, -1))
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relates = Action.get_keyword('form_relate', (cls.__name__, -1))
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result = {
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'print': prints,
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'action': actions,
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'relate': relates,
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}
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cls._view_toolbar_get_cache.set(key, result)
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return result
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@classmethod
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def view_header_get(cls, value, view_type='form'):
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"""
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Overload this method if you need a window title.
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which depends on the context
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:param value: the default header string
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:param view_type: the type of the view
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:return: the header string of the view
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"""
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return value
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@classmethod
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def _view_look_dom_arch(cls, tree, type, field_children=None):
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pool = Pool()
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ModelAccess = pool.get('ir.model.access')
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FieldAccess = pool.get('ir.model.field.access')
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fields_width = {}
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tree_root = tree.getroottree().getroot()
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# Find field without read access
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fread_accesses = FieldAccess.check(cls.__name__,
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cls._fields.keys(), 'read', access=True)
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fields_to_remove = list(x for x, y in fread_accesses.iteritems()
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if not y)
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def check_relation(model, field):
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if field._type in ('one2many', 'many2one'):
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if not ModelAccess.check(field.model_name, mode='read',
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raise_exception=False):
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return False
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if field._type in ('many2many', 'one2one'):
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if (field.target
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and not ModelAccess.check(field.target, mode='read',
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raise_exception=False)):
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return False
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elif (field.relation_name
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and not ModelAccess.check(field.relation_name,
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mode='read', raise_exception=False)):
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return False
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if field._type == 'reference':
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selection = field.selection
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if isinstance(selection, basestring):
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selection = getattr(model, field.selection)()
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for model_name, _ in selection:
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if not ModelAccess.check(model_name, mode='read',
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raise_exception=False):
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return False
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return True
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# Find relation field without read access
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for name, field in cls._fields.iteritems():
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if not check_relation(cls, field):
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fields_to_remove.append(name)
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for name, field in cls._fields.iteritems():
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for field_to_remove in fields_to_remove:
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if field_to_remove in field.depends:
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fields_to_remove.append(name)
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# Remove field without read access
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for field in fields_to_remove:
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for element in tree.xpath(
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'//field[@name="%s"] | //label[@name="%s"]'
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% (field, field)):
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if type == 'form':
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element.tag = 'label'
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element.attrib.clear()
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elif type == 'tree':
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parent = element.getparent()
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parent.remove(element)
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if type == 'tree':
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ViewTreeWidth = pool.get('ir.ui.view_tree_width')
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viewtreewidth_ids = ViewTreeWidth.search([
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('model', '=', cls.__name__),
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('user', '=', Transaction().user),
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])
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for viewtreewidth in ViewTreeWidth.browse(viewtreewidth_ids):
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if viewtreewidth.width > 0:
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fields_width[viewtreewidth.field] = viewtreewidth.width
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fields_def = cls.__view_look_dom(tree_root, type,
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fields_width=fields_width)
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if field_children:
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fields_def.setdefault(field_children, {'name': field_children})
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if field_children in cls._fields:
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field = cls._fields[field_children]
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fields_def.setdefault(field.field, {'name': field.field})
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for field_name in fields_def.keys():
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if field_name in cls._fields:
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field = cls._fields[field_name]
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else:
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continue
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for depend in field.depends:
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fields_def.setdefault(depend, {'name': depend})
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if 'active' in cls._fields:
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fields_def.setdefault('active', {'name': 'active'})
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arch = etree.tostring(tree, encoding='utf-8', pretty_print=False)
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fields2 = cls.fields_get(fields_def.keys())
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for field in fields_def:
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if field in fields2:
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fields2[field].update(fields_def[field])
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return arch, fields2
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@classmethod
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def __view_look_dom(cls, element, type, fields_width=None,
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fields_attrs=None):
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pool = Pool()
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Translation = pool.get('ir.translation')
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ModelData = pool.get('ir.model.data')
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Button = pool.get('ir.model.button')
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User = pool.get('res.user')
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if fields_width is None:
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fields_width = {}
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if not fields_attrs:
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fields_attrs = {}
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else:
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fields_attrs = copy.deepcopy(fields_attrs)
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childs = True
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if element.tag in ('field', 'label', 'separator', 'group', 'suffix',
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'prefix'):
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for attr in ('name', 'icon'):
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if element.get(attr):
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fields_attrs.setdefault(element.get(attr), {})
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try:
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field = cls._fields[element.get(attr)]
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if hasattr(field, 'model_name'):
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relation = field.model_name
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else:
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relation = field.get_target().__name__
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except Exception:
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relation = False
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if relation and element.tag == 'field':
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childs = False
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views = {}
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mode = (element.attrib.pop('mode', None)
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or 'tree,form').split(',')
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view_ids = []
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if element.get('view_ids'):
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for view_id in element.get('view_ids').split(','):
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try:
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view_ids.append(int(view_id))
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except ValueError:
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view_ids.append(ModelData.get_id(
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*view_id.split('.')))
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Relation = pool.get(relation)
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if (not len(element)
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and type == 'form'
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and field._type in ('one2many', 'many2many')):
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# Prefetch only the first view to prevent infinite
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# loop
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if view_ids:
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for view_id in view_ids:
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view = Relation.fields_view_get(
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view_id=view_id)
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views[str(view_id)] = view
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break
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else:
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for view_type in mode:
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views[view_type] = \
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Relation.fields_view_get(
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view_type=view_type)
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break
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element.attrib['mode'] = ','.join(mode)
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element.attrib['view_ids'] = ','.join(
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map(str, view_ids))
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fields_attrs[element.get(attr)].setdefault('views', {}
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).update(views)
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if element.get('name') in fields_width:
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element.set('width', str(fields_width[element.get('name')]))
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# convert attributes into pyson
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encoder = PYSONEncoder()
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for attr in ('states', 'domain', 'spell', 'colors'):
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if element.get(attr):
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element.set(attr, encoder.encode(safe_eval(element.get(attr),
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CONTEXT)))
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if element.tag == 'button':
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button_name = element.attrib['name']
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if button_name in cls._buttons:
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states = cls._buttons[button_name]
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else:
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states = {}
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groups = set(User.get_groups())
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button_groups = Button.get_groups(cls.__name__, button_name)
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if button_groups and not groups & button_groups:
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states = states.copy()
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states['readonly'] = True
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element.set('states', encoder.encode(states))
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# translate view
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if Transaction().language != 'en_US':
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for attr in ('string', 'sum', 'confirm', 'help'):
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if element.get(attr):
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trans = Translation.get_source(cls.__name__, 'view',
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Transaction().language, element.get(attr))
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if trans:
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element.set(attr, trans)
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# Set header string
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if element.tag in ('form', 'tree', 'graph'):
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element.set('string', cls.view_header_get(
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element.get('string') or '', view_type=element.tag))
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if element.tag == 'tree' and element.get('sequence'):
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fields_attrs.setdefault(element.get('sequence'), {})
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if element.tag == 'calendar':
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for attr in ('dtstart', 'dtend'):
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if element.get(attr):
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fields_attrs.setdefault(element.get(attr), {})
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if childs:
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for field in element:
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fields_attrs = cls.__view_look_dom(field, type,
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fields_width=fields_width, fields_attrs=fields_attrs)
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return fields_attrs
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@staticmethod
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def button(func):
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@wraps(func)
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def wrapper(cls, *args, **kwargs):
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pool = Pool()
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Button = pool.get('ir.model.button')
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User = pool.get('res.user')
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if Transaction().user != 0:
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groups = set(User.get_groups())
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button_groups = Button.get_groups(cls.__name__,
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func.__name__)
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if button_groups and not groups & button_groups:
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raise UserError('Calling button %s on %s is not allowed!'
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% (func.__name__, cls.__name__))
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return func(cls, *args, **kwargs)
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return wrapper
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@staticmethod
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def button_action(action):
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def decorator(func):
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func = ModelView.button(func)
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@wraps(func)
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def wrapper(*args, **kwargs):
|
|
pool = Pool()
|
|
ModelData = pool.get('ir.model.data')
|
|
Action = pool.get('ir.action')
|
|
|
|
func(*args, **kwargs)
|
|
|
|
module, fs_id = action.split('.')
|
|
action_id = Action.get_action_id(
|
|
ModelData.get_id(module, fs_id))
|
|
return action_id
|
|
return wrapper
|
|
return decorator
|