from AccessControl import ClassSecurityInfo
from App.class_init import InitializeClass
from Products.CMFCore.ActionInformation import ActionInfo
from Products.CMFCore.ActionsTool import ActionsTool as BaseTool
from Products.CMFCore.interfaces import IActionProvider
from Products.CMFPlone.PloneBaseTool import PloneBaseTool


class ActionsTool(PloneBaseTool, BaseTool):

    meta_type = 'Plone Actions Tool'
    toolicon = 'skins/plone_images/confirm_icon.png'

    security = ClassSecurityInfo()

    #
    #   ActionProvider interface
    #
    security.declarePrivate('listActions')
    def listActions(self, info=None, object=None,
                    categories=None, ignore_categories=None):
        """ List all the actions defined by a provider.
        """
        actions = list(self._actions)

        if ignore_categories is None:
            ignore_categories = ()

        if categories is None:
            categories = [cat for cat in self
                              if cat not in ignore_categories]
        else:
            categories = [cat for cat in self
                              if cat in categories]

        for category in categories:
            actions.extend(self[category].listActions())
        return tuple(actions)

    security.declarePublic('listActionInfos')
    def listActionInfos(self, action_chain=None, object=None,
                        check_visibility=1, check_permissions=1,
                        check_condition=1, max=-1,
                        categories=None, ignore_categories=None):
        # List ActionInfo objects.
        # (method is without docstring to disable publishing)
        actions = self.listActions(object=object,
                                   categories=categories,
                                   ignore_categories=ignore_categories)
        if not actions:
            return []

        ec = self._getExprContext(object)
        actions = [ ActionInfo(action, ec) for action in actions ]

        if action_chain:
            filtered_actions = []
            if isinstance(action_chain, basestring):
                action_chain = (action_chain,)
            for action_ident in action_chain:
                sep = action_ident.rfind('/')
                category, id = action_ident[:sep], action_ident[sep+1:]
                for ai in actions:
                    if id == ai['id'] and category == ai['category']:
                        filtered_actions.append(ai)
            actions = filtered_actions

        if ignore_categories is not None:
            actions = [ai for ai in actions
                          if ai['category'] not in ignore_categories]

        action_infos = []
        for ai in actions:
            if check_visibility and not ai['visible']:
                continue
            if check_permissions and not ai['allowed']:
                continue
            if check_condition and not ai['available']:
                continue
            action_infos.append(ai)
            if max + 1 and len(action_infos) >= max:
                break
        return action_infos

    #
    #   'portal_actions' interface methods
    #
    security.declarePublic('listFilteredActionsFor')
    def listFilteredActionsFor(self, object=None,
                               ignore_providers=(),
                               ignore_categories=None):
        """ List all actions available to the user.
        """
        actions = []

        providers = [name for name in self.listActionProviders()
                          if name not in ignore_providers]

        # Include actions from specific tools.
        for provider_name in providers:
            provider = getattr(self, provider_name, None)
            # Skip missing action providers.
            if provider is None:
                continue
            if IActionProvider.providedBy(provider):
                if provider_name == 'portal_actions':
                    actions.extend(provider.listActionInfos(
                                   object=object,
                                   ignore_categories=ignore_categories
                                   ))
                else:
                    actions.extend(provider.listActionInfos(object=object))

        # Include actions from object.
        if object is not None:
            if IActionProvider.providedBy(object):
                actions.extend(object.listActionInfos(object=object))

        # Reorganize the actions by category.
        filtered_actions={'user':[],
                          'folder':[],
                          'object':[],
                          'global':[],
                          'workflow':[],
                          }

        for action in actions:
            catlist = filtered_actions.setdefault(action['category'], [])
            catlist.append(action)

        return filtered_actions

InitializeClass(ActionsTool)
