+
−# copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
+
−# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
+
−#
+
−# This file is part of CubicWeb.
+
−#
+
−# 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)
+
−# any later version.
+
−#
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−# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
+
−# 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
+
−# details.
+
−#
+
−# You should have received a copy of the GNU Lesser General Public License along
+
−# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
+
−"""Set of tree-building widgets, based on jQuery treeview plugin"""
+
−
+
−__docformat__ = "restructuredtext en"
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−
+
−from logilab.mtconverter import xml_escape
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−from cubicweb.utils import make_uid
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−from cubicweb.interfaces import ITree
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−from cubicweb.selectors import implements
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−from cubicweb.view import EntityView
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−from cubicweb.web import json
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−
+
−def treecookiename(treeid):
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−    return str('%s-treestate' % treeid)
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−
+
−class TreeView(EntityView):
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−    __regid__ = 'treeview'
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−    itemvid = 'treeitemview'
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−    subvid = 'oneline'
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−    css_classes = 'treeview widget'
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−    title = _('tree view')
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−
+
−    def _init_params(self, subvid, treeid, initial_load, initial_thru_ajax, morekwargs):
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−        form = self._cw.form
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−        if subvid is None:
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−            subvid = form.pop('treesubvid', self.subvid) # consume it
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−        if treeid is None:
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−            treeid = form.pop('treeid', None)
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−            if treeid is None:
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−                treeid = 'throw_away' + make_uid('uid')
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−        if 'morekwargs' in self._cw.form:
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−            ajaxargs = json.loads(form.pop('morekwargs'))
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−            # got unicode & python keywords must be strings
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−            morekwargs.update(dict((str(k), v)
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−                                   for k, v in ajaxargs.iteritems()))
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−        toplevel_thru_ajax = form.pop('treeview_top', False) or initial_thru_ajax
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−        toplevel = toplevel_thru_ajax or (initial_load and not form.get('fname'))
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−        return subvid, treeid, toplevel_thru_ajax, toplevel
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−
+
−    def _init_headers(self, treeid, toplevel_thru_ajax):
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−        self._cw.add_css('jquery.treeview.css')
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−        self._cw.add_js(('cubicweb.ajax.js', 'cubicweb.widgets.js', 'jquery.treeview.js'))
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−        self._cw.html_headers.add_onload(u"""
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−jQuery("#tree-%s").treeview({toggle: toggleTree, prerendered: true});""" % treeid)
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−
+
−    def call(self, subvid=None, treeid=None,
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−             initial_load=True, initial_thru_ajax=False, **morekwargs):
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−        subvid, treeid, toplevel_thru_ajax, toplevel = self._init_params(
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−            subvid, treeid, initial_load, initial_thru_ajax, morekwargs)
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−        ulid = ' '
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−        if toplevel:
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−            self._init_headers(treeid, toplevel_thru_ajax)
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−            ulid = ' id="tree-%s"' % treeid
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−        self.w(u'<ul%s class="%s">' % (ulid, self.css_classes))
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−        # XXX force sorting on x.sortvalue() (which return dc_title by default)
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−        # we need proper ITree & co specification to avoid this.
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−        # (pb when type ambiguity at the other side of the tree relation,
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−        # unability to provide generic implementation on eg Folder...)
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−        for i, entity in enumerate(sorted(self.cw_rset.entities(),
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−                                          key=lambda x: x.sortvalue())):
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−            if i+1 < len(self.cw_rset):
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−                morekwargs['is_last'] = False
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−            else:
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−                morekwargs['is_last'] = True
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−            entity.view(self.itemvid, vid=subvid, parentvid=self.__regid__,
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−                        treeid=treeid, w=self.w, **morekwargs)
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−        self.w(u'</ul>')
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−
+
−    def cell_call(self, *args, **allargs):
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−        """ does not makes much sense until you have to invoke
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−        somentity.view('treeview') """
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−        allargs.pop('row')
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−        allargs.pop('col')
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−        self.call(*args, **allargs)
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−
+
−
+
−class FileTreeView(TreeView):
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−    """specific version of the treeview to display file trees
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−    """
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−    __regid__ = 'filetree'
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−    css_classes = 'treeview widget filetree'
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−    title = _('file tree view')
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−
+
−    def call(self, subvid=None, treeid=None, initial_load=True, **kwargs):
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−        super(FileTreeView, self).call(treeid=treeid, subvid='filetree-oneline',
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−                                       initial_load=initial_load, **kwargs)
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−
+
−class FileItemInnerView(EntityView):
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−    """inner view used by the TreeItemView instead of oneline view
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−
+
−    This view adds an enclosing <span> with some specific CSS classes
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−    around the oneline view. This is needed by the jquery treeview plugin.
+
−    """
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−    __regid__ = 'filetree-oneline'
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−
+
−    def cell_call(self, row, col):
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−        entity = self.cw_rset.get_entity(row, col)
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−        if ITree.is_implemented_by(entity.__class__) and not entity.is_leaf():
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−            self.w(u'<div class="folder">%s</div>\n' % entity.view('oneline'))
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−        else:
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−            # XXX define specific CSS classes according to mime types
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−            self.w(u'<div class="file">%s</div>\n' % entity.view('oneline'))
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−
+
−
+
−class DefaultTreeViewItemView(EntityView):
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−    """default treeitem view for entities which don't implement ITree"""
+
−    __regid__ = 'treeitemview'
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−
+
−    def cell_call(self, row, col, vid='oneline', treeid=None, **morekwargs):
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−        assert treeid is not None
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−        itemview = self._cw.view(vid, self.cw_rset, row=row, col=col)
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−        last_class = morekwargs['is_last'] and ' class="last"' or ''
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−        self.w(u'<li%s>%s</li>' % (last_class, itemview))
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−
+
−
+
−class TreeViewItemView(EntityView):
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−    """specific treeitem view for entities which implement ITree
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−
+
−    (each item should be expandable if it's not a tree leaf)
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−    """
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−    __regid__ = 'treeitemview'
+
−    __select__ = implements(ITree)
+
−    default_branch_state_is_open = False
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−
+
−    def open_state(self, eeid, treeid):
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−        cookies = self._cw.get_cookie()
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−        treestate = cookies.get(treecookiename(treeid))
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−        if treestate:
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−            return str(eeid) in treestate.value.split(':')
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−        return self.default_branch_state_is_open
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−
+
−    def cell_call(self, row, col, treeid, vid='oneline', parentvid='treeview',
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−                  is_last=False, **morekwargs):
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−        w = self.w
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−        entity = self.cw_rset.get_entity(row, col)
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−        liclasses = []
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−        is_open = self.open_state(entity.eid, treeid)
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−        is_leaf = not hasattr(entity, 'is_leaf') or entity.is_leaf()
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−        if is_leaf:
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−            if is_last:
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−                liclasses.append('last')
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−            w(u'<li class="%s">' % u' '.join(liclasses))
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−        else:
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−            rql = entity.children_rql() % {'x': entity.eid}
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−            url = xml_escape(self._cw.build_url('json', rql=rql, vid=parentvid,
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−                                                pageid=self._cw.pageid,
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−                                                treeid=treeid,
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−                                                fname='view',
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−                                                treesubvid=vid,
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−                                                morekwargs=json.dumps(morekwargs)))
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−            divclasses = ['hitarea']
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−            if is_open:
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−                liclasses.append('collapsable')
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−                divclasses.append('collapsable-hitarea')
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−            else:
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−                liclasses.append('expandable')
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−                divclasses.append('expandable-hitarea')
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−            if is_last:
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−                if is_open:
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−                    liclasses.append('lastCollapsable')
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−                    divclasses.append('lastCollapsable-hitarea')
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−                else:
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−                    liclasses.append('lastExpandable')
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−                    divclasses.append('lastExpandable-hitarea')
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−            if is_open:
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−                w(u'<li class="%s">' % u' '.join(liclasses))
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−            else:
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−                w(u'<li cubicweb:loadurl="%s" class="%s">' % (url, u' '.join(liclasses)))
+
−            if treeid.startswith('throw_away'):
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−                divtail = ''
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−            else:
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−                divtail = """ onclick="asyncRemoteExec('node_clicked', '%s', '%s')" """ % (
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−                    treeid, entity.eid)
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−            w(u'<div class="%s"%s></div>' % (u' '.join(divclasses), divtail))
+
−
+
−            # add empty <ul> because jquery's treeview plugin checks for
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−            # sublists presence
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−            if not is_open:
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−                w(u'<ul class="placeholder"><li>place holder</li></ul>')
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−        # the local node info
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−        self.wview(vid, self.cw_rset, row=row, col=col, **morekwargs)
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−        if is_open and not is_leaf: #  => rql is defined
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−            self.wview(parentvid, entity.children(entities=False), subvid=vid,
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−                       treeid=treeid, initial_load=False, **morekwargs)
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−        w(u'</li>')
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−