| author | Sylvain Thénault <sylvain.thenault@logilab.fr> |
| Mon, 06 Jul 2009 10:42:02 +0200 | |
| branch | stable |
| changeset 2271 | 5483155a1e17 |
| parent 2217 | 3a8cee8f8778 |
| child 2312 | af4d8f75c5db |
| permissions | -rw-r--r-- |
| 0 | 1 |
"""abstract views and templates classes for CubicWeb web client |
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:organization: Logilab |
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1977
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:copyright: 2001-2009 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2. |
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:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr |
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1977
606923dff11b
big bunch of copyright / docstring update
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parents:
1756
diff
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:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses |
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""" |
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__docformat__ = "restructuredtext en" |
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_ = unicode |
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from cStringIO import StringIO |
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from logilab.common.deprecation import obsolete |
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from logilab.mtconverter import html_escape |
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from cubicweb import NotAnEntity |
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from cubicweb.selectors import yes, non_final_entity, nonempty_rset, none_rset |
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from cubicweb.selectors import require_group_compat, accepts_compat |
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from cubicweb.appobject import AppRsetObject |
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from cubicweb.utils import UStringIO, HTMLStream |
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from cubicweb.schema import display_name |
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# robots control |
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NOINDEX = u'<meta name="ROBOTS" content="NOINDEX" />' |
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NOFOLLOW = u'<meta name="ROBOTS" content="NOFOLLOW" />' |
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CW_XHTML_EXTENSIONS = '''[ |
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<!ATTLIST html xmlns:cubicweb CDATA #FIXED \'http://www.logilab.org/2008/cubicweb\' > |
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<!ENTITY % coreattrs |
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"id ID #IMPLIED |
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class CDATA #IMPLIED |
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style CDATA #IMPLIED |
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title CDATA #IMPLIED |
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cubicweb:sortvalue CDATA #IMPLIED |
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cubicweb:target CDATA #IMPLIED |
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cubicweb:limit CDATA #IMPLIED |
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cubicweb:type CDATA #IMPLIED |
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cubicweb:loadtype CDATA #IMPLIED |
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cubicweb:wdgtype CDATA #IMPLIED |
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cubicweb:initfunc CDATA #IMPLIED |
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cubicweb:inputid CDATA #IMPLIED |
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cubicweb:tindex CDATA #IMPLIED |
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cubicweb:inputname CDATA #IMPLIED |
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cubicweb:value CDATA #IMPLIED |
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cubicweb:required CDATA #IMPLIED |
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cubicweb:accesskey CDATA #IMPLIED |
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cubicweb:maxlength CDATA #IMPLIED |
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cubicweb:variables CDATA #IMPLIED |
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cubicweb:displayactions CDATA #IMPLIED |
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cubicweb:fallbackvid CDATA #IMPLIED |
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cubicweb:fname CDATA #IMPLIED |
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cubicweb:vid CDATA #IMPLIED |
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cubicweb:rql CDATA #IMPLIED |
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cubicweb:actualrql CDATA #IMPLIED |
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cubicweb:rooteid CDATA #IMPLIED |
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cubicweb:dataurl CDATA #IMPLIED |
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cubicweb:size CDATA #IMPLIED |
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cubicweb:tlunit CDATA #IMPLIED |
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cubicweb:loadurl CDATA #IMPLIED |
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cubicweb:uselabel CDATA #IMPLIED |
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cubicweb:facetargs CDATA #IMPLIED |
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cubicweb:facetName CDATA #IMPLIED |
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"> ] ''' |
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TRANSITIONAL_DOCTYPE = u'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" %s>\n' % CW_XHTML_EXTENSIONS |
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TRANSITIONAL_DOCTYPE_NOEXT = u'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">\n' |
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STRICT_DOCTYPE = u'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd" %s>\n' % CW_XHTML_EXTENSIONS |
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STRICT_DOCTYPE_NOEXT = u'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">\n' |
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# base view object ############################################################ |
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class View(AppRsetObject): |
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"""abstract view class, used as base for every renderable object such |
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as views, templates, some components...web |
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A view is instantiated to render a [part of a] result set. View |
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subclasses may be parametred using the following class attributes: |
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* `templatable` indicates if the view may be embeded in a main |
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template or if it has to be rendered standalone (i.e. XML for |
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instance) |
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* if the view is not templatable, it should set the `content_type` class |
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attribute to the correct MIME type (text/xhtml by default) |
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* the `category` attribute may be used in the interface to regroup related |
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objects together |
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At instantiation time, the standard `req`, `rset`, and `cursor` |
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attributes are added and the `w` attribute will be set at rendering |
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time to a write function to use. |
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""" |
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__registry__ = 'views' |
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registered = require_group_compat(AppRsetObject.registered) |
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templatable = True |
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need_navigation = True |
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# content_type = 'application/xhtml+xml' # text/xhtml' |
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binary = False |
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add_to_breadcrumbs = True |
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category = 'view' |
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def __init__(self, req=None, rset=None, **kwargs): |
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super(View, self).__init__(req, rset, **kwargs) |
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self.w = None |
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@property |
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def content_type(self): |
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return self.req.html_content_type() |
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def set_stream(self, w=None): |
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if self.w is not None: |
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return |
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if w is None: |
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if self.binary: |
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self._stream = stream = StringIO() |
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else: |
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self._stream = stream = UStringIO() |
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w = stream.write |
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else: |
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stream = None |
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self.w = w |
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return stream |
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# main view interface ##################################################### |
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def render(self, w=None, **context): |
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"""called to render a view object for a result set. |
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This method is a dispatched to an actual method selected |
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according to optional row and col parameters, which are locating |
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a particular row or cell in the result set: |
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* if row is specified, `cell_call` is called |
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* if none of them is supplied, the view is considered to apply on |
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the whole result set (which may be None in this case), `call` is |
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called |
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""" |
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row = context.get('row') |
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if row is not None: |
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context.setdefault('col', 0) |
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view_func = self.cell_call |
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else: |
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view_func = self.call |
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stream = self.set_stream(w) |
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# stream = self.set_stream(context) |
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view_func(**context) |
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# return stream content if we have created it |
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if stream is not None: |
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return self._stream.getvalue() |
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dispatch = obsolete('.dispatch is deprecated, use .render')(render) |
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# should default .call() method add a <div classs="section"> around each |
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# rset item |
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add_div_section = True |
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def call(self, **kwargs): |
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"""the view is called for an entire result set, by default loop |
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other rows of the result set and call the same view on the |
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particular row |
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Views applicable on None result sets have to override this method |
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""" |
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rset = self.rset |
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if rset is None: |
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raise NotImplementedError, self |
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wrap = self.templatable and len(rset) > 1 and self.add_div_section |
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for i in xrange(len(rset)): |
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if wrap: |
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self.w(u'<div class="section">') |
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self.wview(self.id, rset, row=i, **kwargs) |
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if wrap: |
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self.w(u"</div>") |
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def cell_call(self, row, col, **kwargs): |
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"""the view is called for a particular result set cell""" |
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raise NotImplementedError, self |
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def linkable(self): |
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"""return True if the view may be linked in a menu |
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by default views without title are not meant to be displayed |
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""" |
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if not getattr(self, 'title', None): |
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return False |
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return True |
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def is_primary(self): |
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return self.id == 'primary' |
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def url(self): |
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"""return the url associated with this view. Should not be |
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necessary for non linkable views, but a default implementation |
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is provided anyway. |
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""" |
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try: |
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return self.build_url(vid=self.id, rql=self.req.form['rql']) |
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except KeyError: |
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return self.build_url(vid=self.id) |
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def set_request_content_type(self): |
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"""set the content type returned by this view""" |
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self.req.set_content_type(self.content_type) |
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# view utilities ########################################################## |
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def wview(self, __vid, rset=None, __fallback_vid=None, **kwargs): |
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"""shortcut to self.view method automatically passing self.w as argument |
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""" |
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self.view(__vid, rset, __fallback_vid, w=self.w, **kwargs) |
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| 819 | 214 |
# XXX Template bw compat |
215 |
template = obsolete('.template is deprecated, use .view')(wview) |
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def whead(self, data): |
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self.req.html_headers.write(data) |
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||
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def wdata(self, data): |
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"""simple helper that escapes `data` and writes into `self.w`""" |
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self.w(html_escape(data)) |
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||
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def html_headers(self): |
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"""return a list of html headers (eg something to be inserted between |
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<head> and </head> of the returned page |
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||
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by default return a meta tag to disable robot indexation of the page |
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""" |
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return [NOINDEX] |
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| 0 | 232 |
def page_title(self): |
233 |
"""returns a title according to the result set - used for the |
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title in the HTML header |
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""" |
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vtitle = self.req.form.get('vtitle') |
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if vtitle: |
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return self.req._(vtitle) |
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# class defined title will only be used if the resulting title doesn't |
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# seem clear enough |
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vtitle = getattr(self, 'title', None) or u'' |
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if vtitle: |
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vtitle = self.req._(vtitle) |
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rset = self.rset |
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if rset and rset.rowcount: |
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if rset.rowcount == 1: |
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try: |
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entity = self.complete_entity(0) |
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# use long_title to get context information if any |
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clabel = entity.dc_long_title() |
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except NotAnEntity: |
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clabel = display_name(self.req, rset.description[0][0]) |
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clabel = u'%s (%s)' % (clabel, vtitle) |
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else : |
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etypes = rset.column_types(0) |
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if len(etypes) == 1: |
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etype = iter(etypes).next() |
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clabel = display_name(self.req, etype, 'plural') |
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else : |
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clabel = u'#[*] (%s)' % vtitle |
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else: |
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clabel = vtitle |
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return u'%s (%s)' % (clabel, self.req.property_value('ui.site-title')) |
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def output_url_builder( self, name, url, args ): |
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self.w(u'<script language="JavaScript"><!--\n' \ |
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u'function %s( %s ) {\n' % (name, ','.join(args) ) ) |
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url_parts = url.split("%s") |
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self.w(u' url="%s"' % url_parts[0] ) |
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for arg, part in zip(args, url_parts[1:]): |
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self.w(u'+str(%s)' % arg ) |
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if part: |
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self.w(u'+"%s"' % part) |
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self.w('\n document.window.href=url;\n') |
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self.w('}\n-->\n</script>\n') |
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def create_url(self, etype, **kwargs): |
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""" return the url of the entity creation form for a given entity type""" |
|
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return self.req.build_url('add/%s'%etype, **kwargs) |
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def field(self, label, value, row=True, show_label=True, w=None, tr=True): |
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""" read-only field """ |
|
283 |
if w is None: |
|
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w = self.w |
|
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if row: |
|
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w(u'<div class="row">') |
|
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if show_label: |
|
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if tr: |
|
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label = display_name(self.req, label) |
|
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w(u'<span class="label">%s</span>' % label) |
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w(u'<div class="field">%s</div>' % value) |
|
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if row: |
|
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w(u'</div>') |
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# concrete views base classes ################################################# |
|
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298 |
|
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|
299 |
class EntityView(View): |
| 843 | 300 |
"""base class for views applying on an entity (i.e. uniform result set)""" |
|
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|
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__select__ = non_final_entity() |
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|
302 |
registered = accepts_compat(View.registered) |
|
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|
303 |
|
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|
304 |
category = 'entityview' |
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|
305 |
|
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|
306 |
|
| 0 | 307 |
class StartupView(View): |
| 843 | 308 |
"""base class for views which doesn't need a particular result set to be |
309 |
displayed (so they can always be displayed !) |
|
| 0 | 310 |
""" |
| 707 | 311 |
__select__ = none_rset() |
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registered = require_group_compat(View.registered) |
| 1433 | 313 |
|
| 0 | 314 |
category = 'startupview' |
| 1433 | 315 |
|
| 0 | 316 |
def url(self): |
317 |
"""return the url associated with this view. We can omit rql here""" |
|
318 |
return self.build_url('view', vid=self.id) |
|
319 |
||
320 |
def html_headers(self): |
|
321 |
"""return a list of html headers (eg something to be inserted between |
|
322 |
<head> and </head> of the returned page |
|
323 |
||
324 |
by default startup views are indexed |
|
325 |
""" |
|
326 |
return [] |
|
327 |
||
328 |
||
329 |
class EntityStartupView(EntityView): |
|
330 |
"""base class for entity views which may also be applied to None |
|
331 |
result set (usually a default rql is provided by the view class) |
|
332 |
""" |
|
|
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|
333 |
__select__ = none_rset() | non_final_entity() |
|
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|
334 |
|
| 0 | 335 |
default_rql = None |
|
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|
336 |
|
|
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|
337 |
def __init__(self, req, rset, **kwargs): |
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|
338 |
super(EntityStartupView, self).__init__(req, rset, **kwargs) |
| 0 | 339 |
if rset is None: |
340 |
# this instance is not in the "entityview" category |
|
341 |
self.category = 'startupview' |
|
342 |
||
343 |
def startup_rql(self): |
|
| 873 | 344 |
"""return some rql to be executed if the result set is None""" |
| 0 | 345 |
return self.default_rql |
|
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|
346 |
|
| 0 | 347 |
def call(self, **kwargs): |
| 873 | 348 |
"""override call to execute rql returned by the .startup_rql method if |
349 |
necessary |
|
| 0 | 350 |
""" |
351 |
if self.rset is None: |
|
352 |
self.rset = self.req.execute(self.startup_rql()) |
|
353 |
rset = self.rset |
|
354 |
for i in xrange(len(rset)): |
|
355 |
self.wview(self.id, rset, row=i, **kwargs) |
|
356 |
||
357 |
def url(self): |
|
| 873 | 358 |
"""return the url associated with this view. We can omit rql if we are |
359 |
on a result set on which we do not apply. |
|
| 0 | 360 |
""" |
| 881 | 361 |
if self.rset is None: |
| 0 | 362 |
return self.build_url(vid=self.id) |
363 |
return super(EntityStartupView, self).url() |
|
364 |
||
|
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|
365 |
|
| 0 | 366 |
class AnyRsetView(View): |
367 |
"""base class for views applying on any non empty result sets""" |
|
| 707 | 368 |
__select__ = nonempty_rset() |
|
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|
369 |
|
| 0 | 370 |
category = 'anyrsetview' |
|
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diff
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|
371 |
|
|
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parents:
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diff
changeset
|
372 |
def columns_labels(self, mainindex=0, tr=True): |
|
370
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|
373 |
if tr: |
|
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|
374 |
translate = lambda val, req=self.req: display_name(req, val) |
|
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|
375 |
else: |
|
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|
376 |
translate = lambda val: val |
|
2203
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changeset
|
377 |
# XXX [0] because of missing Union support |
|
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|
378 |
rqlstdescr = self.rset.syntax_tree().get_description(mainindex, |
|
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|
379 |
translate)[0] |
|
369
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|
380 |
labels = [] |
|
2203
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parents:
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diff
changeset
|
381 |
for colindex, label in enumerate(rqlstdescr): |
|
369
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|
382 |
# compute column header |
|
2203
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parents:
1999
diff
changeset
|
383 |
if label == 'Any': # find a better label |
|
2207
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Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2203
diff
changeset
|
384 |
label = ','.join(translate(et) |
|
369
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parents:
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diff
changeset
|
385 |
for et in self.rset.column_types(colindex)) |
|
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|
386 |
labels.append(label) |
|
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|
387 |
return labels |
|
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|
388 |
|
| 1433 | 389 |
|
| 0 | 390 |
# concrete template base classes ############################################## |
391 |
||
|
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parents:
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changeset
|
392 |
class MainTemplate(View): |
| 0 | 393 |
"""main template are primary access point to render a full HTML page. |
394 |
There is usually at least a regular main template and a simple fallback |
|
395 |
one to display error if the first one failed |
|
396 |
""" |
|
|
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parents:
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diff
changeset
|
397 |
registered = require_group_compat(View.registered) |
| 0 | 398 |
|
399 |
@property |
|
400 |
def doctype(self): |
|
401 |
if self.req.xhtml_browser(): |
|
|
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changeset
|
402 |
return STRICT_DOCTYPE |
|
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changeset
|
403 |
return STRICT_DOCTYPE_NOEXT |
| 0 | 404 |
|
| 1424 | 405 |
def set_stream(self, w=None): |
406 |
if self.w is not None: |
|
| 0 | 407 |
return |
408 |
if w is None: |
|
409 |
if self.binary: |
|
410 |
self._stream = stream = StringIO() |
|
411 |
else: |
|
412 |
self._stream = stream = HTMLStream(self.req) |
|
413 |
w = stream.write |
|
414 |
else: |
|
415 |
stream = None |
|
416 |
self.w = w |
|
417 |
return stream |
|
418 |
||
419 |
def write_doctype(self, xmldecl=True): |
|
420 |
assert isinstance(self._stream, HTMLStream) |
|
421 |
self._stream.doctype = self.doctype |
|
422 |
if not xmldecl: |
|
423 |
self._stream.xmldecl = u'' |
|
|
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parents:
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diff
changeset
|
424 |
|
| 822 | 425 |
def linkable(self): |
426 |
return False |
|
| 1433 | 427 |
|
|
661
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parents:
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diff
changeset
|
428 |
# concrete component base classes ############################################# |
|
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parents:
660
diff
changeset
|
429 |
|
|
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properly kill/depreciate component base class, only keep Component
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parents:
660
diff
changeset
|
430 |
class ReloadableMixIn(object): |
|
4f61eb8a96b7
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sylvain.thenault@logilab.fr
parents:
660
diff
changeset
|
431 |
"""simple mixin for reloadable parts of UI""" |
| 1433 | 432 |
|
|
661
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properly kill/depreciate component base class, only keep Component
sylvain.thenault@logilab.fr
parents:
660
diff
changeset
|
433 |
def user_callback(self, cb, args, msg=None, nonify=False): |
|
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
sylvain.thenault@logilab.fr
parents:
660
diff
changeset
|
434 |
"""register the given user callback and return an url to call it ready to be |
|
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
sylvain.thenault@logilab.fr
parents:
660
diff
changeset
|
435 |
inserted in html |
|
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
sylvain.thenault@logilab.fr
parents:
660
diff
changeset
|
436 |
""" |
|
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
sylvain.thenault@logilab.fr
parents:
660
diff
changeset
|
437 |
self.req.add_js('cubicweb.ajax.js') |
|
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
sylvain.thenault@logilab.fr
parents:
660
diff
changeset
|
438 |
if nonify: |
|
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
sylvain.thenault@logilab.fr
parents:
660
diff
changeset
|
439 |
_cb = cb |
|
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
sylvain.thenault@logilab.fr
parents:
660
diff
changeset
|
440 |
def cb(*args): |
|
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
sylvain.thenault@logilab.fr
parents:
660
diff
changeset
|
441 |
_cb(*args) |
|
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
sylvain.thenault@logilab.fr
parents:
660
diff
changeset
|
442 |
cbname = self.req.register_onetime_callback(cb, *args) |
|
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
sylvain.thenault@logilab.fr
parents:
660
diff
changeset
|
443 |
return self.build_js(cbname, html_escape(msg or '')) |
| 1433 | 444 |
|
|
661
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
sylvain.thenault@logilab.fr
parents:
660
diff
changeset
|
445 |
def build_update_js_call(self, cbname, msg): |
|
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
sylvain.thenault@logilab.fr
parents:
660
diff
changeset
|
446 |
rql = html_escape(self.rset.printable_rql()) |
|
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
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parents:
660
diff
changeset
|
447 |
return "javascript:userCallbackThenUpdateUI('%s', '%s', '%s', '%s', '%s', '%s')" % ( |
|
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
sylvain.thenault@logilab.fr
parents:
660
diff
changeset
|
448 |
cbname, self.id, rql, msg, self.__registry__, self.div_id()) |
| 1433 | 449 |
|
|
661
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
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parents:
660
diff
changeset
|
450 |
def build_reload_js_call(self, cbname, msg): |
|
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
sylvain.thenault@logilab.fr
parents:
660
diff
changeset
|
451 |
return "javascript:userCallbackThenReloadPage('%s', '%s')" % (cbname, msg) |
|
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
sylvain.thenault@logilab.fr
parents:
660
diff
changeset
|
452 |
|
|
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
sylvain.thenault@logilab.fr
parents:
660
diff
changeset
|
453 |
build_js = build_update_js_call # expect updatable component by default |
| 1433 | 454 |
|
|
661
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
sylvain.thenault@logilab.fr
parents:
660
diff
changeset
|
455 |
def div_id(self): |
|
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
sylvain.thenault@logilab.fr
parents:
660
diff
changeset
|
456 |
return '' |
|
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
sylvain.thenault@logilab.fr
parents:
660
diff
changeset
|
457 |
|
|
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
sylvain.thenault@logilab.fr
parents:
660
diff
changeset
|
458 |
|
|
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
sylvain.thenault@logilab.fr
parents:
660
diff
changeset
|
459 |
class Component(ReloadableMixIn, View): |
|
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
sylvain.thenault@logilab.fr
parents:
660
diff
changeset
|
460 |
"""base class for components""" |
|
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
sylvain.thenault@logilab.fr
parents:
660
diff
changeset
|
461 |
__registry__ = 'components' |
| 707 | 462 |
__select__ = yes() |
|
1511
514e4e53a3c7
do not set visible property by default
sylvain.thenault@logilab.fr
parents:
1498
diff
changeset
|
463 |
property_defs = {} |
|
661
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
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parents:
660
diff
changeset
|
464 |
|
|
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properly kill/depreciate component base class, only keep Component
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parents:
660
diff
changeset
|
465 |
def div_class(self): |
|
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
sylvain.thenault@logilab.fr
parents:
660
diff
changeset
|
466 |
return '%s %s' % (self.propval('htmlclass'), self.id) |
|
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
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parents:
660
diff
changeset
|
467 |
|
|
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
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parents:
660
diff
changeset
|
468 |
def div_id(self): |
|
4f61eb8a96b7
properly kill/depreciate component base class, only keep Component
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parents:
660
diff
changeset
|
469 |
return '%sComponent' % self.id |