32b7e1b130
git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@3432 fd906abe-77d9-0310-91a1-e0d9ade77398
108 lines
3.2 KiB
Python
108 lines
3.2 KiB
Python
#
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# Copyright (c) 2008 Helmut Merz helmutm@cy55.de
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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"""
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Basic classes for layouts and layout components.
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$Id$
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"""
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from zope.cachedescriptors.property import Lazy
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from zope import component
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from zope.interface import implements
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from cybertools.composer.base import Component, Element, Compound
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from cybertools.composer.base import Template
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from cybertools.composer.layout.interfaces import ILayoutManager
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from cybertools.composer.layout.interfaces import ILayout, ILayoutInstance
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from cybertools.composer.layout.region import Region
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from cybertools.util.jeep import Jeep
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class LayoutManager(object):
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implements(ILayoutManager)
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@Lazy
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def regions(self):
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result = {}
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for name, layout in component.getUtilitiesFor(ILayout):
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region = result.setdefault(layout.regionName,
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Region(layout.regionName))
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region.layouts.append(layout)
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return result
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def getLayouts(self, key, instance):
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region = self.regions.get(key)
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return sorted(instance.getLayouts(region),
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key=lambda x: x.template.order)
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class Layout(Template):
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implements(ILayout)
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title = description = u''
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category = 'default'
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renderer = None
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instanceName = ''
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order = 50
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sublayouts = None
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defaultSublayout = None
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def __init__(self, name, regionName, **kw):
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self.name = name
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self.regionName = regionName
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for k, v in kw.items():
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setattr(self, k, v)
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self.register()
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def register(self):
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existing = component.queryUtility(ILayout, name=self.name)
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if existing:
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raise ValueError("Layout '%s' has already been registered." % self.name)
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component.provideUtility(self, provides=ILayout, name=self.name)
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class LayoutInstance(object):
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implements(ILayoutInstance)
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template = None
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def __init__(self, context):
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self.context = context
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@property
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def renderer(self):
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return self.template.renderer
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def getLayouts(self, region):
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""" Return sublayout instances.
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"""
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if region is None:
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return []
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result = []
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sublayouts = self.template.sublayouts
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for l in region.layouts:
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if sublayouts is None or l.name in sublayouts:
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li = component.getAdapter(self.context, ILayoutInstance,
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name=l.instanceName)
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li.template = l
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result.append(li)
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return result
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