[1921] | 1 | import re |
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[782] | 2 | from zope.interface import implements |
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| 3 | from zope.component import adapts |
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[1921] | 4 | from zope.schema.interfaces import InvalidValue |
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[782] | 5 | |
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[1695] | 6 | from OFS.interfaces import ITraversable |
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[782] | 7 | from Products.CMFCore.utils import getToolByName |
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| 8 | |
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[1695] | 9 | from quintagroup.canonicalpath.interfaces import ICanonicalPath |
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[1927] | 10 | from quintagroup.canonicalpath.interfaces import ICanonicalLink |
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[782] | 11 | |
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[1927] | 12 | PROPERTY_PATH = "canonical_path" |
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| 13 | PROPERTY_LINK = "canonical_link" |
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[782] | 14 | |
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[1921] | 15 | _is_canonical = re.compile( |
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| 16 | r"\S*$" # non space and no new line(should be pickier) |
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| 17 | ).match |
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| 18 | |
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| 19 | |
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[2103] | 20 | class DefaultCanonicalAdapter(object): |
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| 21 | """Generic canonical adapter. |
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[782] | 22 | """ |
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[1695] | 23 | adapts(ITraversable) |
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[782] | 24 | |
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[2103] | 25 | prop = None |
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| 26 | |
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[782] | 27 | def __init__(self, context): |
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| 28 | self.context = context |
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[1927] | 29 | self.purl = getToolByName(self.context,'portal_url') |
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[782] | 30 | |
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[2103] | 31 | def _validate(self, value): |
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[1921] | 32 | value.strip() |
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| 33 | if not _is_canonical(value): |
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| 34 | raise InvalidValue(value) |
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| 35 | return value |
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| 36 | |
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[2103] | 37 | def getDefault(self): |
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| 38 | """Return default value for the self.prop""" |
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| 39 | raise NotImplementedError() |
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| 40 | |
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| 41 | def getProp(self): |
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| 42 | """ First of all return value from the self.prop, |
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| 43 | if self.prop not exist - return default value |
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[1921] | 44 | """ |
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[2103] | 45 | if self.context.hasProperty(self.prop): |
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| 46 | return self.context.getProperty(self.prop) |
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[1921] | 47 | |
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[2103] | 48 | return self.getDefault() |
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[1921] | 49 | |
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[2103] | 50 | def setProp(self, value): |
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| 51 | """ First validate value, than add/updater self.prop |
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[1921] | 52 | """ |
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[2103] | 53 | value = self._validate(value) |
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[1921] | 54 | |
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[2103] | 55 | if self.context.hasProperty(self.prop): |
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| 56 | self.context._updateProperty(self.prop, value) |
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[1921] | 57 | else: |
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[2103] | 58 | self.context._setProperty(self.prop, value, type="string") |
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[1921] | 59 | |
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[2103] | 60 | def delProp(self): |
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| 61 | """ Delete self.prop customization |
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[1933] | 62 | """ |
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[2103] | 63 | if self.context.hasProperty(self.prop): |
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| 64 | self.context.manage_delProperties(ids=[self.prop,]) |
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[1927] | 65 | |
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| 66 | |
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[2103] | 67 | class DefaultCanonicalPathAdapter(DefaultCanonicalAdapter): |
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| 68 | """Adapts base content to canonical path. |
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[1927] | 69 | """ |
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| 70 | implements(ICanonicalLink) |
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| 71 | |
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[2103] | 72 | prop = PROPERTY_PATH |
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[1927] | 73 | |
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[2103] | 74 | def getDefault(self): |
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| 75 | return '/'+'/'.join(self.purl.getRelativeContentPath(self.context)) |
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[1927] | 76 | |
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[2103] | 77 | canonical_path = property(getProp, setProp, delProp) |
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[1927] | 78 | |
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| 79 | |
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[2103] | 80 | class DefaultCanonicalLinkAdapter(DefaultCanonicalAdapter): |
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| 81 | """Adapts base content to canonical link. |
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| 82 | """ |
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| 83 | implements(ICanonicalLink) |
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[1927] | 84 | |
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[2103] | 85 | prop = PROPERTY_LINK |
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[1927] | 86 | |
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[2103] | 87 | def getDefault(self): |
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| 88 | return self.context.absolute_url() |
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[1933] | 89 | |
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[2103] | 90 | canonical_link = property(getProp, setProp, delProp) |
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