def mk_moplate_filters(self, params):
"""
Create moplate-level extra filters
Builds a list of filters specific to this moplate, that will
be applied to the extracted content of every mobile page.
This method is a hook that can be altered by subclasses. By
default, it returns an empty list, unless the Moplate was
instantiated with a non-empty imgsub argument; in that case it
will contain a properly initialized imgsub filter.
The params argument can be used to generate filters specific
to the parameter set.
Note that these are applied after any component-level filters,
but before any site-level filters.
@param params : Moplate template parameters
@type params : dict
@return : Filters
@rtype : list of callable
"""
from mobilize.filters import imgsub
filts = []
if self.imgsubs:
filts.append(lambda elem: imgsub(elem, self.imgsubs))
return filts
def mk_site_filters(self, params):
'''
Create global mobile-site filters
Builds a list of filters that will be passed on to every
moplate during rendering, to be applied to the extracted
content of every mobile page.
Note that these are applyed *after* any moplate-level filters,
which are themselves applied after any component-level
filters.
This list can be altered or added to by subclasses.
@param params : Site-level template parameters
@type params : dict
@return : Filters
@rtype : list of callable
'''
from mobilize.images import to_imgserve
site_filters = []
if self.imgsubs:
site_filters.append(lambda elem: filters.imgsub(elem, self.imgsubs))
if 'fullsite' in params and 'request_path' in params:
desktop_url = 'http://%(fullsite)s%(request_path)s' % params
site_filters.extend((
lambda elem: filters.absimgsrc(elem, desktop_url),
to_imgserve,
lambda elem: filters.abslinkfilesrc(elem, desktop_url),
))
return site_filters
def test_imgsub(self):
from mobilize.filters import imgsub
html1 = '''<div>
<ul>
<li><img id="a" alt="ima image" width="10" height="20" src="/path/to/a.png"/></li>
<li><img id="b" alt="ima image" width="10" height="20" src="/path/to/b.png"/></li>
<li><img id="c" alt="ima image" width="10" height="20" src="/path/to/c.png"/></li>
<li><img id="d" alt="ima image" width="10" height="20" src="/path/to/d.png"/></li>
<li><img id="e" alt="ima image" width="10" height="20" src="/path/to/e.png"/></li>
<li><img id="f" alt="ima image" width="10" height="20" src="/path/to/f.png"/></li>
<li><img id="g" alt="ima image" width="10" height="20" src="/path/to/g.png"/></li>
</ul>
<section>
<div>
<p>
<aside>
<div>
<span>
<img id="h" alt="ima image" width="10" height="20" src="/path/to/h.png"/>
</span>
</div>
</aside>
</p>
</div>
</section>
</div>
'''
# This dict defines the mapping of img IDs to the values in
# html1 and html2 above. You can create a copy with certain
# overriden values with the id2src() functions, following, in order
# to make a specific test.
# E.g.:
# d = id2src1(a='/path/to/NEWa.png')
# d['a']
# -> '/path/to/NEWa.png'
# d['b']
# -> '/path/to/b.png'
_id2src = {
'a' : '/path/to/a.png',
'b' : '/path/to/b.png',
'c' : '/path/to/c.png',
'd' : '/path/to/d.png',
'e' : '/path/to/e.png',
'f' : '/path/to/f.png',
'g' : '/path/to/g.png',
'h' : '/path/to/h.png',
}
def id2src(**overrides):
d = dict(_id2src)
d.update(overrides)
return d
testdata = [
{'subs' : {
'/path/to/c.png' : '/mobile/c.png',
'/path/to/e.png' : '/mobile/a.png',
},
'expected' : id2src(
c = '/mobile/c.png',
e = '/mobile/a.png',
),
},
{'subs' : {},
'expected' : id2src(),
},
{'subs' : {
'/path/to/h.png' : '/mobile/h.png',
'/path/to/f.png' : '/mobile/h.png',
},
'expected' : id2src(
h = '/mobile/h.png',
f = '/mobile/h.png',
),
},
]
for ii, td in enumerate(testdata):
root = html.fromstring(html1)
# check test precondition
for imgid, srcval in _id2src.items():
img = root.get_element_by_id(imgid)
self.assertEqual(img.tag, 'img')
self.assertEqual(img.attrib['src'], srcval)
imgsub(root, td['subs'])
for imgid, srcval in td['expected'].items():
img = root.get_element_by_id(imgid)
self.assertEqual(img.attrib['src'], srcval)
# test for callable imgsub value
def alter_c(elem):
self.assertEqual('img', elem.tag)
elem.attrib['src'] = '/mobile/c.png'
elem.attrib['width'] = '45'
elem.attrib['height'] = '95'
def alter_h(elem):
self.assertEqual('img', elem.tag)
elem.attrib['src'] = '/mobile/h.png'
elem.attrib['width'] = '145'
del elem.attrib['height']
subs = {
'/path/to/c.png' : alter_c,
'/path/to/h.png' : alter_h,
}
root = html.fromstring(html1)
imgsub(root, subs)
img_c = root.get_element_by_id('c')
self.assertEqual('/mobile/c.png', img_c.attrib['src'])
self.assertEqual('45', img_c.attrib['width'])
self.assertEqual('95', img_c.attrib['height'])
img_h = root.get_element_by_id('h')
self.assertEqual('/mobile/h.png', img_h.attrib['src'])
self.assertEqual('145', img_h.attrib['width'])
self.assertFalse('height' in img_h.attrib)
