author | Arthur Lutz <arthur.lutz@logilab.fr> |
Thu, 02 Feb 2012 17:59:52 +0100 | |
branch | stable |
changeset 8191 | eceaf9e21966 |
parent 7990 | a673d1d9a738 |
child 8190 | 2a3c1b787688 |
permissions | -rw-r--r-- |
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# copyright 2003-2011 LOGILAB S.A. (Paris, FRANCE), all rights reserved. |
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# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr |
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# |
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# This file is part of CubicWeb. |
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# |
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# CubicWeb is free software: you can redistribute it and/or modify it under the |
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# terms of the GNU Lesser General Public License as published by the Free |
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# Software Foundation, either version 2.1 of the License, or (at your option) |
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# any later version. |
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# |
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# CubicWeb is distributed in the hope that it will be useful, but WITHOUT |
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more |
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# details. |
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# |
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# You should have received a copy of the GNU Lesser General Public License along |
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# with CubicWeb. If not, see <http://www.gnu.org/licenses/>. |
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"""abstract action classes for CubicWeb web client |
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|
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Actions are typically displayed in an action box, but can also be used |
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in other parts of the interface (the user menu, the footer, etc.). The |
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'order', 'category' and 'title' class attributes control how the action will |
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be displayed. The 'submenu' attribute is only used for actions in the |
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action box. |
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The most important method from a developper point of view in the |
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:meth:'Action.url' method, which returns a URL on which the navigation |
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should directed to perform the action. There are two common ways of |
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writing that method: |
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* do nothing special and simply return a URL to the current rset with |
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a special view (with `self._cw.build_url(...)` for instance) |
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* define an inner function `callback_func(req, *args)` which will do |
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the work and call it through `self._cw.user_callback(callback_func, |
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args, msg)`: this method will return a URL which calls the inner |
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function, and displays the message in the web interface when the |
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callback has completed (and report any exception occuring in the |
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callback too) |
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Many examples of the first approach are available in :mod:`cubicweb.web.views.actions`. |
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Here is an example of the second approach: |
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.. sourcecode:: python |
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from cubicweb.web import action |
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class SomeAction(action.Action): |
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__regid__ = 'mycube_some_action' |
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title = _(some action) |
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__select__ = action.Action.__select__ & is_instance('TargetEntity') |
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def url(self): |
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if self.cw_row is None: |
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eids = [row[0] for row in self.cw_rset] |
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else: |
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eids = (self.cw_rset[self.cw_row][self.cw_col or 0],) |
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def do_action(req, eids): |
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for eid in eids: |
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entity = req.entity_from_eid(eid, 'TargetEntity') |
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entity.perform_action() |
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msg = self._cw._('some_action performed') |
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return self._cw.user_callback(do_action, (eids,), msg) |
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""" |
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__docformat__ = "restructuredtext en" |
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_ = unicode |
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from cubicweb import target |
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from cubicweb.selectors import (partial_relation_possible, match_search_state, |
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one_line_rset) |
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from cubicweb.appobject import AppObject |
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class Action(AppObject): |
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"""abstract action. Handle the .search_states attribute to match |
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request search state. |
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""" |
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__registry__ = 'actions' |
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__select__ = match_search_state('normal') |
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order = 99 |
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category = 'moreactions' |
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# actions in category 'moreactions' can specify a sub-menu in which they should be filed |
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submenu = None |
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def actual_actions(self): |
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yield self |
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def fill_menu(self, box, menu): |
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"""add action(s) to the given submenu of the given box""" |
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for action in self.actual_actions(): |
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menu.append(box.action_link(action)) |
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def html_class(self): |
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if self._cw.selected(self.url()): |
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return 'selected' |
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def build_action(self, title, url, **kwargs): |
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return UnregisteredAction(self._cw, title, url, **kwargs) |
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def url(self): |
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"""return the url associated with this action""" |
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raise NotImplementedError |
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class UnregisteredAction(Action): |
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"""non registered action, used to build boxes""" |
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category = None |
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id = None |
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def __init__(self, req, title, url, **kwargs): |
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Action.__init__(self, req) |
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self.title = req._(title) |
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self._url = url |
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self.__dict__.update(kwargs) |
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|
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def url(self): |
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return self._url |
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||
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class LinkToEntityAction(Action): |
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"""base class for actions consisting to create a new object with an initial |
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relation set to an entity. |
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125 |
|
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126 |
Additionaly to EntityAction behaviour, this class is parametrized using |
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127 |
.rtype, .role and .target_etype attributes to check if the action apply and |
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128 |
if the logged user has access to it (see |
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129 |
:class:`~cubicweb.selectors.partial_relation_possible` selector |
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130 |
documentation for more information). |
0 | 131 |
""" |
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__select__ = (match_search_state('normal') & one_line_rset() |
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& partial_relation_possible(action='add', strict=True)) |
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|
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submenu = 'addrelated' |
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# to be defined in concrete classes |
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target_etype = rtype = None |
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def url(self): |
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ttype = self.target_etype |
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141 |
entity = self.cw_rset.get_entity(self.cw_row or 0, self.cw_col or 0) |
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linkto = '%s:%s:%s' % (self.rtype, entity.eid, target(self)) |
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return self._cw.vreg["etypes"].etype_class(ttype).cw_create_url(self._cw, |
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__redirectpath=entity.rest_path(), __linkto=linkto, |
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__redirectvid=self._cw.form.get('__redirectvid', '')) |
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