147 lines
4.8 KiB
Python
147 lines
4.8 KiB
Python
#
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# Copyright (c) 2016 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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Controller for views, templates, macros.
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"""
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from zope import component
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from zope.app.pagetemplate import ViewPageTemplateFile
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from zope.cachedescriptors.property import Lazy
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from cybertools.browser.configurator import IViewConfigurator, IMacroViewProperty
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from cybertools.browser.member import IMemberInfoProvider
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from cybertools.util.jeep import Jeep
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# layout controller: collects information about head elements, skins, portlets, etc
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class Controller(object):
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def __init__(self, context, request):
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self.view = view = context # the controller is adapted to a view
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self.context = context.context
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self.request = request
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self.params = Jeep()
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self.templates = {}
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self.configure()
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#self.view.setupController()
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self.view.controller = self # notify the view
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skin = None # may be overwritten by the view
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@Lazy
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def macros(self):
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return Macros(self)
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@Lazy
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def resourceBase(self):
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skinSetter = self.skin and ('/++skin++' + self.skin.__name__) or ''
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# TODO: put '/@@' etc after path to site instead of directly after URL0
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return self.request.URL[0] + skinSetter + '/@@/'
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def configure(self):
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# collect multiple configurators:
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configurators = component.getAdapters((self.context, self.request),
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IViewConfigurator)
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for conf in configurators:
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configurator = conf[1]
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for item in configurator.getActiveViewProperties():
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if IMacroViewProperty.providedBy(item):
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self.macros.register(item.slot, item.identifier,
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item.template, item.name,
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**item.params)
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else:
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setattr(self, item.slot, item)
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@Lazy
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def memberInfo(self):
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provider = component.queryMultiAdapter((self.context, self.request),
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IMemberInfoProvider)
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return provider is not None and provider.data or None
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def setMainPage(self):
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# May be overridden by subclasse for setting special main index template
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pass
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def getTemplateMacros(self, name, default):
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template = self.templates.get(name)
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if template is None:
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template = default
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return template.macros
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def mergeTemplateMacros(self, name, *bases):
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result = {}
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for base in bases:
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result.update(base.macros)
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template = self.templates.get(name)
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if template is not None:
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result.update(template.macros)
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return result
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class Macros(dict):
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standardTemplate = ViewPageTemplateFile('base_macros.pt')
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def __init__(self, controller):
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self.controller = controller
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self.identifiers = {}
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def register(self, slot, identifier=None, template=None, name=None,
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priority=50, **kw):
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if identifier:
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# make sure a certain resource is only registered once
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if identifier in self.identifiers:
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return
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if template is None:
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template = self.standardTemplate
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if name is None:
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name = slot
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macro = Macro(template, name, priority, identifier=identifier, **kw)
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entry = self.setdefault(slot, [])
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entry.append(macro)
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if identifier:
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self.identifiers[identifier] = macro
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def hide(self, identifier):
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self.identifiers[identifier] = False
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def __getitem__(self, key):
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return [m for m in sorted(self.get(key, []), key=lambda x: x.priority)
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if self.identifiers.get(m.identifier, True)]
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class Macro(object):
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identifier = ''
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def __init__(self, template, name, priority, **kw):
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self.template = template
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self.name = name
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self.priority = priority
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for k in kw:
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setattr(self, k, kw[k])
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@Lazy
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def macro(self):
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return self.template.macros[self.name]
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def __call__(self):
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return self.macro
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