author | Sylvain Thénault <sylvain.thenault@logilab.fr> |
Mon, 22 Mar 2010 16:33:29 +0100 | |
branch | stable |
changeset 4969 | 0ad18e41053a |
parent 4721 | 8f63691ccb7f |
child 5421 | 8167de96c523 |
permissions | -rw-r--r-- |
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"""navigation components definition for CubicWeb web client |
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:organization: Logilab |
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update copyright: welcome 2010
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:copyright: 2001-2010 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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big bunch of copyright / docstring update
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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 rql.nodes import VariableRef, Constant |
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use xml_escape
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from logilab.mtconverter import xml_escape |
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from logilab.common.deprecation import deprecated |
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from cubicweb.interfaces import IPrevNext |
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from cubicweb.selectors import (paginated_rset, sorted_rset, |
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primary_view, match_context_prop, |
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one_line_rset, implements) |
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drop common subpackage
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from cubicweb.uilib import cut |
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from cubicweb.web.component import EntityVComponent, NavigationComponent |
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class PageNavigation(NavigationComponent): |
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def call(self): |
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"""displays a resultset by page""" |
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w = self.w |
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req = self._cw |
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rset = self.cw_rset |
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page_size = self.page_size |
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start = 0 |
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blocklist = [] |
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params = dict(req.form) |
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self.clean_params(params) |
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basepath = req.relative_path(includeparams=False) |
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while start < rset.rowcount: |
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stop = min(start + page_size - 1, rset.rowcount - 1) |
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blocklist.append(self.page_link(basepath, params, start, stop, |
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self.index_display(start, stop))) |
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start = stop + 1 |
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w(u'<div class="pagination">') |
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w(u'%s ' % self.previous_link(basepath, params)) |
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w(u'[ %s ]' % u' | '.join(blocklist)) |
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w(u' %s' % self.next_link(basepath, params)) |
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w(u'</div>') |
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def index_display(self, start, stop): |
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return u'%s - %s' % (start+1, stop+1) |
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class SortedNavigation(NavigationComponent): |
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"""sorted navigation apply if navigation is needed (according to page size) |
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and if the result set is sorted |
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""" |
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__select__ = paginated_rset() & sorted_rset() |
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# number of considered chars to build page links |
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nb_chars = 5 |
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def display_func(self, rset, col, attrname): |
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if attrname is not None: |
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def index_display(row): |
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if not rset[row][col]: # outer join |
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return u'' |
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entity = rset.get_entity(row, col) |
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return entity.printable_value(attrname, format='text/plain') |
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elif self._cw.vreg.schema.eschema(rset.description[0][col]).final: |
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def index_display(row): |
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return unicode(rset[row][col]) |
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else: |
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def index_display(row): |
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return rset.get_entity(row, col).view('text') |
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return index_display |
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def call(self): |
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"""displays links to navigate accross pages of a result set |
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Displayed result is done according to a variable on which the sort |
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is done, and looks like: |
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[ana - cro] | [cro - ghe] | ... | [tim - zou] |
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""" |
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w = self.w |
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rset = self.cw_rset |
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page_size = self.page_size |
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rschema = self._cw.vreg.schema.rschema |
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# attrname = the name of attribute according to which the sort |
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# is done if any |
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for sorterm in rset.syntax_tree().children[0].orderby: |
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if isinstance(sorterm.term, Constant): |
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col = sorterm.term.value - 1 |
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index_display = self.display_func(rset, col, None) |
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break |
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var = sorterm.term.get_nodes(VariableRef)[0].variable |
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col = None |
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for ref in var.references(): |
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rel = ref.relation() |
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if rel is None: |
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continue |
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attrname = rel.r_type |
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if attrname == 'is': |
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continue |
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if not rschema(attrname).final: |
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col = var.selected_index() |
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attrname = None |
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if col is None: |
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# final relation or not selected non final relation |
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if var is rel.children[0]: |
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relvar = rel.children[1].children[0].get_nodes(VariableRef)[0] |
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else: |
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relvar = rel.children[0].variable |
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col = relvar.selected_index() |
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if col is not None: |
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break |
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else: |
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# no relation but maybe usable anyway if selected |
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col = var.selected_index() |
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attrname = None |
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if col is not None: |
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index_display = self.display_func(rset, col, attrname) |
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break |
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else: |
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# nothing usable found, use the first column |
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index_display = self.display_func(rset, 0, None) |
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blocklist = [] |
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params = dict(self._cw.form) |
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self.clean_params(params) |
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start = 0 |
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basepath = self._cw.relative_path(includeparams=False) |
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while start < rset.rowcount: |
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stop = min(start + page_size - 1, rset.rowcount - 1) |
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cell = self.format_link_content(index_display(start), index_display(stop)) |
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blocklist.append(self.page_link(basepath, params, start, stop, cell)) |
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start = stop + 1 |
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self.write_links(basepath, params, blocklist) |
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def format_link_content(self, startstr, stopstr): |
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text = u'%s - %s' % (startstr.lower()[:self.nb_chars], |
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stopstr.lower()[:self.nb_chars]) |
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return xml_escape(text) |
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def write_links(self, basepath, params, blocklist): |
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self.w(u'<div class="pagination">') |
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self.w(u'%s ' % self.previous_link(basepath, params)) |
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self.w(u'[ %s ]' % u' | '.join(blocklist)) |
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parents:
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self.w(u' %s' % self.next_link(basepath, params)) |
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self.w(u'</div>') |
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class NextPrevNavigationComponent(EntityVComponent): |
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__regid__ = 'prevnext' |
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# register msg not generated since no entity implements IPrevNext in cubicweb |
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# itself |
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title = _('contentnavigation_prevnext') |
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help = _('contentnavigation_prevnext_description') |
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__select__ = (one_line_rset() & primary_view() |
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& match_context_prop() & implements(IPrevNext)) |
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context = 'navbottom' |
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order = 10 |
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def call(self, view=None): |
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entity = self.cw_rset.get_entity(0, 0) |
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previous = entity.previous_entity() |
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next = entity.next_entity() |
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if previous or next: |
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textsize = self._cw.property_value('navigation.short-line-size') |
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self.w(u'<div class="prevnext">') |
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if previous: |
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self.w(u'<div class="previousEntity left">') |
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self.w(self.previous_link(previous, textsize)) |
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self.w(u'</div>') |
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parents:
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self._cw.html_headers.add_raw('<link rel="prev" href="%s" />' |
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% xml_escape(previous.absolute_url())) |
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if next: |
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self.w(u'<div class="nextEntity right">') |
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self.w(self.next_link(next, textsize)) |
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self.w(u'</div>') |
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self._cw.html_headers.add_raw('<link rel="next" href="%s" />' |
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% xml_escape(next.absolute_url())) |
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self.w(u'</div>') |
180 |
self.w(u'<div class="clear"></div>') |
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182 |
def previous_link(self, previous, textsize): |
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183 |
return u'<a href="%s" title="%s"><< %s</a>' % ( |
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xml_escape(previous.absolute_url()), |
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self._cw._('i18nprevnext_previous'), |
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xml_escape(cut(previous.dc_title(), textsize))) |
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0 | 188 |
def next_link(self, next, textsize): |
189 |
return u'<a href="%s" title="%s">%s >></a>' % ( |
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xml_escape(next.absolute_url()), |
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self._cw._('i18nprevnext_next'), |
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192 |
xml_escape(cut(next.dc_title(), textsize))) |
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def do_paginate(view, rset=None, w=None, show_all_option=True, page_size=None): |
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"""write pages index in w stream (default to view.w) and then limit the result |
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set (default to view.rset) to the currently displayed page |
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""" |
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req = view._cw |
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if rset is None: |
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201 |
rset = view.cw_rset |
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if w is None: |
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w = view.w |
4252 | 204 |
nav = req.vreg['components'].select_or_none( |
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'navigation', req, rset=rset, page_size=page_size) |
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206 |
if nav: |
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207 |
if w is None: |
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208 |
w = view.w |
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209 |
# get boundaries before component rendering |
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start, stop = nav.page_boundaries() |
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211 |
nav.render(w=w) |
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212 |
params = dict(req.form) |
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nav.clean_params(params) |
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214 |
# make a link to see them all |
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215 |
if show_all_option: |
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url = xml_escape(req.build_url(__force_display=1, **params)) |
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217 |
w(u'<span><a href="%s">%s</a></span>\n' |
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% (url, req._('show %s results') % len(rset))) |
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219 |
rset.limit(offset=start, limit=stop-start, inplace=True) |
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220 |
|
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221 |
|
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222 |
def paginate(view, show_all_option=True, w=None, page_size=None, rset=None): |
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223 |
"""paginate results if the view is paginable and we're not explictly told to |
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224 |
display everything (by setting __force_display in req.form) |
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""" |
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if view.paginable and not view._cw.form.get('__force_display'): |
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do_paginate(view, rset, w, show_all_option, page_size) |
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228 |
|
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229 |
# monkey patch base View class to add a .paginate([...]) |
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# method to be called to write pages index in the view and then limit the result |
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# set to the current page |
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232 |
from cubicweb.view import View |
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View.do_paginate = do_paginate |
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View.paginate = paginate |
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235 |
|
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236 |
|
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237 |
#@deprecated (see below) |
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238 |
def limit_rset_using_paged_nav(self, req, rset, w, forcedisplay=False, |
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239 |
show_all_option=True, page_size=None): |
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if not (forcedisplay or req.form.get('__force_display') is not None): |
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do_paginate(self, rset, w, show_all_option, page_size) |
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242 |
|
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View.pagination = deprecated('[3.2] .pagination is deprecated, use paginate')( |
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limit_rset_using_paged_nav) |
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limit_rset_using_paged_nav = deprecated('[3.6] limit_rset_using_paged_nav is deprecated, use do_paginate')( |
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246 |
limit_rset_using_paged_nav) |