[Zope] dtml-tree urlparam
Jonothan Farr
jfarr@real.com
Mon, 18 Sep 2000 16:37:46 -0700
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I hacked this in already, but haven't gotten around to posting my patch. The
updated TreeTag.py file is attached. Copy it to your lib/python/TreeDisplay
directory. This is from a Zope 2.1.6 installation. You should use diff/patch if
you've upgraded.
--jfarr
----- Original Message -----
From: Júlio Dinis Silva <juliodinis@hotmail.com>
To: <zope@zope.org>
Sent: Monday, September 18, 2000 12:59 PM
Subject: [Zope] dtml-tree urlparam
> Hello all!
>
> Suppose I have a page who needs some dinamically generated params in order
> to be rendered.
> Suppose this page also has a dtml-tree. I found that to
> add extra params to the url created I can use the urlparam param :-)
>
> But suppose instead of passing "arg=1" I want to pass
> REQUEST['QUERY_STRING']. I thought urlparam would do the trick but
> using urlparam=QUERY_STRING the string passed is "QUERY_STRING" instead of
> the value of QUERY_STRING.
>
> Is there another param to do what I want or do I have to go into the
> source to hack dtml-tree to force to pass my QUERY_STRING parameters?
>
> thanx to all,
> Julio Dinis Silva
> _________________________________________________________________________
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Content-Type: text/x-python;
name="TreeTag.py"
Content-Transfer-Encoding: quoted-printable
Content-Disposition: attachment;
filename="TreeTag.py"
#########################################################################=
#####
#=20
# Zope Public License (ZPL) Version 1.0
# -------------------------------------
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# Copyright (c) Digital Creations. All rights reserved.
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# modification, are permitted provided that the following conditions are
# met:
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# notice, this list of conditions, and the following disclaimer.
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# notice, this list of conditions, and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
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# in any manner possible. Zope includes a "Powered by Zope"
# button that is installed by default. While it is not a license
# violation to remove this button, it is requested that the
# attribution remain. A significant investment has been put
# into Zope, and this effort will continue if the Zope community
# continues to grow. This is one way to assure that growth.
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# attributions are listed in the accompanying credits file.
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#####
"""Rendering object hierarchies as Trees
"""
__rcs_id__=3D'$Id: TreeTag.py,v 1.42 2000/06/01 13:48:08 jim Exp $'
__version__=3D'$Revision: 1.42 $'[11:-2]
from DocumentTemplate.DT_Util import *
from DocumentTemplate.DT_String import String
from string import join, split, rfind, find, translate
from urllib import quote, unquote
from zlib import compress, decompress
from binascii import b2a_base64, a2b_base64
tbl=3Djoin(map(chr, range(256)),'')
tplus=3Dtbl[:ord('+')]+'-'+tbl[ord('+')+1:]
tminus=3Dtbl[:ord('-')]+'+'+tbl[ord('-')+1:]
class Tree:
name=3D'tree'
blockContinuations=3D()
expand=3DNone
def __init__(self, blocks):
tname, args, section =3D blocks[0]
args=3Dparse_params(args, name=3DNone, expr=3DNone, nowrap=3D1,=20
expand=3DNone, leaves=3DNone,
header=3DNone, footer=3DNone,
table_header=3DNone,
branches=3DNone, branches_expr=3DNone,
sort=3DNone, reverse=3D1, =
skip_unauthorized=3D1,
id=3DNone, single=3D1, url=3DNone,
# opened_decoration=3DNone,
# closed_decoration=3DNone,
# childless_decoration=3DNone,
assume_children=3D1,
urlparam=3DNone,urlparam_expr=3DNone)
has_key=3Dargs.has_key
if has_key('name'): name=3Dargs['name']
elif has_key(''): name=3Dargs['name']=3Dargs['']
else: name=3D'a tree tag'
if has_key('branches_expr'):
if has_key('branches'):
raise ParseError, _tm(
'branches and and branches_expr given', 'tree')
args['branches_expr']=3DVSEval.Eval(
args['branches_expr'], expr_globals).eval
elif not has_key('branches'): args['branches']=3D'tpValues'
if has_key('urlparam_expr'):
if has_key('urlparam'):
raise ParseError, _tm(
'urlparam and and urlparam_expr given', 'tree')
args['urlparam_expr']=3DVSEval.Eval(
args['urlparam_expr'], expr_globals).eval
if not has_key('id'): args['id']=3D'tpId'
if not has_key('url'): args['url']=3D'tpURL'
if not has_key('childless_decoration'):
args['childless_decoration']=3D''
=20
self.__name__ =3D name
self.section=3Dsection.blocks
self.args=3Dargs
if args.has_key('expr'):
if args.has_key('name'):
raise ParseError, _tm('name and expr given', 'tree')
args['expr']=3DVSEval.Eval(args['expr'], expr_globals)
=20
def render(self,md):
args=3Dself.args
have=3Dargs.has_key
if have('name'): v=3Dmd[args['name']]
elif have('expr'): v=3Dargs['expr'].eval(md)
else: v=3Dmd.this
return tpRender(v,md,self.section, self.args)
__call__=3Drender
String.commands['tree']=3DTree
pyid=3Did # Copy builtin
def tpRender(self, md, section, args,
simple_type=3D{type(''):0, type(1):0, =
type(1.0):0}.has_key):
"""Render data organized as a tree.
We keep track of open nodes using a cookie. The cookie stored the
tree state. State should be a tree represented like:
[] # all closed
['eagle'], # eagle is open
['eagle'], ['jeep', [1983, 1985]] # eagle, jeep, 1983 jeep and =
1985 jeep
where the items are object ids. The state will be converted to a
compressed and base64ed string that gets unencoded, uncompressed,=20
and evaluated on the other side.
Note that ids used in state need not be connected to urls, since
state manipulation is internal to rendering logic.
Note that to make eval safe, we do not allow the character '*' in
the state.
"""
data=3D[]
idattr=3Dargs['id']
if hasattr(self, idattr):
id=3Dgetattr(self, idattr)
if not simple_type(type(id)): id=3Did() =20
elif hasattr(self, '_p_oid'): id=3Doid(self)
else: id=3Dpyid(self)
try:
# see if we are being run as a sub-document
root=3Dmd['tree-root-url']
url=3Dmd['tree-item-url']
state=3Dmd['tree-state']
diff=3Dmd['tree-diff']
substate=3Dmd['-tree-substate-']
colspan=3Dmd['tree-colspan'] =20
level=3Dmd['tree-level']
except KeyError:
# OK, we are a top-level invocation
level=3D-1
if md.has_key('collapse_all'):
state=3D[id,[]],
elif md.has_key('expand_all'):
have_arg=3Dargs.has_key
if have_arg('branches'):
def get_items(node, branches=3Dargs['branches'], =
md=3Dmd):
validate=3Dmd.validate
if validate is None or not hasattr(node, =
'aq_acquire'):
items=3Dgetattr(node, branches)
else:
items=3Dnode.aq_acquire(branches, validate, md)
return items()
elif have_arg('branches_expr'):
def get_items(node, =
branches_expr=3Dargs['branches_expr'], md=3Dmd):
md._push(InstanceDict(node, md))
items=3Dbranches_expr(md)
md._pop()
return items
state=3D[id, tpValuesIds(self, get_items, args)],
else:
if md.has_key('tree-s'):
state=3Dmd['tree-s']
state=3Ddecode_seq(state)
try:
if state[0][0] !=3D id: state=3D[id,[]],
except IndexError: state=3D[id,[]],
else: state=3D[id,[]],
if md.has_key('tree-e'):
diff=3Ddecode_seq(md['tree-e'])
apply_diff(state, diff, 1)
if md.has_key('tree-c'):
diff=3Ddecode_seq(md['tree-c'])
apply_diff(state, diff, 0)
colspan=3DtpStateLevel(state)
substate=3Dstate
diff=3D[]
url=3D''
root=3Dmd['URL']
l=3Drfind(root,'/')
if l >=3D 0: root=3Droot[l+1:]
treeData=3D{'tree-root-url': root,
'tree-colspan': colspan,
'tree-state': state }
=20
md._push(InstanceDict(self, md))
md._push(treeData)
try: =
tpRenderTABLE(self,id,root,url,state,substate,diff,data,colspan,
section,md,treeData, level, args)
finally: md._pop(2)
if state is substate and not (args.has_key('single') and =
args['single']):
state=3Dstate or ([id],)
state=3Dencode_seq(state)
md['RESPONSE'].setCookie('tree-s',state)
return join(data,'')
def tpRenderTABLE(self, id, root_url, url, state, substate, diff, data,
colspan, section, md, treeData, level=3D0, =
args=3DNone,
simple_type=3D{type(''):0, type(1):0, =
type(1.0):0}.has_key,
):
"Render a tree as a table"
have_arg=3Dargs.has_key
exp=3D0
if level >=3D 0:
urlattr=3Dargs['url']
if urlattr and hasattr(self, urlattr):
tpUrl=3Dgetattr(self, urlattr)
if not simple_type(type(tpUrl)): tpUrl=3DtpUrl() =20
url =3D (url and ('%s/%s' % (url, tpUrl))) or tpUrl
root_url =3D root_url or tpUrl
treeData['tree-item-url']=3Durl
treeData['tree-level']=3Dlevel
treeData['tree-item-expanded']=3D0
idattr=3Dargs['id']
output=3Ddata.append
items=3DNone
if (have_arg('assume_children') and args['assume_children']
and substate is not state):
# We should not compute children unless we have to.
# See if we've been asked to expand our children.
for i in range(len(substate)):
sub=3Dsubstate[i]
if sub[0]=3D=3Did:
exp=3Di+1
break
if not exp: items=3D1
if items is None:
validate=3Dmd.validate
if have_arg('branches') and hasattr(self, args['branches']):
if validate is None or not hasattr(self, 'aq_acquire'):
items=3Dgetattr(self, args['branches'])
else:
items=3Dself.aq_acquire(args['branches'],validate,md)
items=3Ditems()
elif have_arg('branches_expr'):
items=3Dargs['branches_expr'](md)
if not items and have_arg('leaves'): items=3D1
if items and items !=3D 1:
if validate is not None:
unauth=3D[]
index=3D0
for i in items:
try: v=3Dvalidate(items,items,None,i,md)
except: v=3D0
if not v: unauth.append(index)
index=3Dindex+1
if unauth:
if have_arg('skip_unauthorized') and =
args['skip_unauthorized']:
items=3Dlist(items)
unauth.reverse()
for i in unauth: del items[i]
else:
raise ValidationError, unauth
if have_arg('sort'):
# Faster/less mem in-place sort
if type(items)=3D=3Dtype(()):
items=3Dlist(items)
sort=3Dargs['sort']
size=3Drange(len(items))
for i in size:
v=3Ditems[i]
k=3Dgetattr(v,sort)
try: k=3Dk()
except: pass
items[i]=3D(k,v)
items.sort()
for i in size:
items[i]=3Ditems[i][1]
if have_arg('reverse'):
items=3Dlist(items) # Copy the list
items.reverse()
diff.append(id)
_td_colspan=3D'<TD COLSPAN=3D"%s" NOWRAP></TD>'
_td_single =3D'<TD WIDTH=3D"16" NOWRAP></TD>'
sub=3DNone
if substate is state:
output('<TABLE CELLSPACING=3D"0">\n')
if have_arg('table_header'):
doc=3Dargs['table_header']
if md.has_key(doc): doc=3Dmd.getitem(doc,0)
else: doc=3DNone
if doc is not None:
output(doc(
None, md,
standard_html_header=3D(
'<TR><TD WIDTH=3D"16" NOWRAP></TD>'
'<TD COLSPAN=3D%s VALIGN=3D"TOP">' % colspan),
standard_html_footer=3D'</TD></TR>',
))
sub=3Dsubstate[0]
exp=3Ditems
else:
# Add prefix
output('<TR>\n')
# Add +/- icon
if items:
if level:
if level > 3: output(_td_colspan % (level-1))
elif level > 1: output(_td_single * (level-1))
output(_td_single)
output('\n')
output('<TD WIDTH=3D"16" VALIGN=3D"TOP" NOWRAP>')
for i in range(len(substate)):
sub=3Dsubstate[i]
if sub[0]=3D=3Did:
exp=3Di+1
break
####################################
# Mostly inline encode_seq for speed
s=3Dcompress(str(diff))
if len(s) > 57: s=3Dencode_str(s)
else:
s=3Db2a_base64(s)[:-1]
l=3Dfind(s,'=3D')
if l >=3D 0: s=3Ds[:l]
s=3Dtranslate(s, tplus)
####################################
script=3Dmd['SCRIPT_NAME']
# Propagate extra args through tree.
if args.has_key( 'urlparam' ):
param =3D args['urlparam']
param =3D "%s&" % param
elif args.has_key('urlparam_expr'):
urlparam_expr=3Dargs['urlparam_expr']
param=3Durlparam_expr(md)
param =3D "%s&" % param
else:
param =3D ""
if exp:
treeData['tree-item-expanded']=3D1
output('<A NAME=3D"%s" HREF=3D"%s?%stree-c=3D%s#%s">'
'<IMG SRC=3D"%s/p_/mi" ALT=3D"-" BORDER=3D0></A>' =
%
(id, root_url, param, s, id, script))
else:
output('<A NAME=3D"%s" HREF=3D"%s?%stree-e=3D%s#%s">'
'<IMG SRC=3D"%s/p_/pl" ALT=3D"+" BORDER=3D0></A>' =
%
(id, root_url, param, s, id, script))
output('</TD>\n')
else:
if level > 2: output(_td_colspan % level)
elif level > 0: output(_td_single * level)
output(_td_single)
output('\n')
=20
=20
# add item text
dataspan=3Dcolspan-level
output('<TD%s%s VALIGN=3D"TOP" ALIGN=3D"LEFT">' %
((dataspan > 1 and (' COLSPAN=3D"%s"' % dataspan) or ''),
(have_arg('nowrap') and args['nowrap'] and ' NOWRAP' or =
''))
)
output(render_blocks(section, md))
output('</TD>\n</TR>\n')
if exp:
level=3Dlevel+1
dataspan=3Dcolspan-level
if level > 2: h=3D_td_colspan % level
elif level > 0: h=3D_td_single * level
else: h=3D''
if have_arg('header'):
doc=3Dargs['header']
if md.has_key(doc): doc=3Dmd.getitem(doc,0)
else: doc=3DNone
if doc is not None:
output(doc(
None, md,
standard_html_header=3D(
'<TR>%s<TD WIDTH=3D"16" NOWRAP></TD>'
'<TD%s VALIGN=3D"TOP">'
% (h,
(dataspan > 1 and (' COLSPAN=3D"%s"' % =
dataspan)
or ''))),
standard_html_footer=3D'</TD></TR>',
))
=20
if items=3D=3D1:
# leaves
if have_arg('leaves'):
doc=3Dargs['leaves']
if md.has_key(doc): doc=3Dmd.getitem(doc,0)
else: doc=3DNone
if doc is not None:
treeData['-tree-substate-']=3Dsub
treeData['tree-level']=3Dlevel
md._push(treeData)
try: output(doc(
None,md,
standard_html_header=3D(
'<TR>%s<TD WIDTH=3D"16" NOWRAP></TD>'
'<TD%s VALIGN=3D"TOP">'
% (h,
(dataspan > 1 and
(' COLSPAN=3D"%s"' % dataspan) or ''))),
standard_html_footer=3D'</TD></TR>',
))
finally: md._pop(1)
elif have_arg('expand'):
doc=3Dargs['expand']
if md.has_key(doc): doc=3Dmd.getitem(doc,0)
else: doc=3DNone
if doc is not None:
treeData['-tree-substate-']=3Dsub
treeData['tree-level']=3Dlevel
md._push(treeData)
try: output(doc(
None,md,
standard_html_header=3D(
'<TR>%s<TD WIDTH=3D"16" NOWRAP></TD>'
'<TD%s VALIGN=3D"TOP">'
% (h,
(dataspan > 1 and
(' COLSPAN=3D"%s"' % dataspan) or ''))),
standard_html_footer=3D'</TD></TR>',
))
finally: md._pop(1)
else:
__traceback_info__=3Dsub, args, state, substate
ids=3D{}
for item in items:
if hasattr(item, idattr):
id=3Dgetattr(item, idattr)
if not simple_type(type(id)): id=3Did()
elif hasattr(item, '_p_oid'): id=3Doid(item)
else: id=3Dpyid(item)
if len(sub)=3D=3D1: sub.append([])
substate=3Dsub[1]
ids[id]=3D1
md._push(InstanceDict(item,md))
try: data=3DtpRenderTABLE(
item,id,root_url,url,state,substate,diff,data,
colspan, section, md, treeData, level, args)
finally: md._pop()
if not sub[1]: del sub[1]
ids=3Dids.has_key
for i in range(len(substate)-1,-1):
if not ids(substate[i][0]): del substate[i]
if have_arg('footer'):
doc=3Dargs['footer']
if md.has_key(doc): doc=3Dmd.getitem(doc,0)
else: doc=3DNone
if doc is not None:
output(doc(
None, md,
standard_html_header=3D(
'<TR>%s<TD WIDTH=3D"16" NOWRAP></TD>'
'<TD%s VALIGN=3D"TOP">'
% (h,
(dataspan > 1 and (' COLSPAN=3D"%s"' % =
dataspan)
or ''))),
standard_html_footer=3D'</TD></TR>',
))
del diff[-1]
if not diff: output('</TABLE>\n')
return data
def apply_diff(state, diff, expand):
if not diff: return
s=3D[None, state]
diff.reverse()
__traceback_info__=3Ds, diff
while diff:
id=3Ddiff[-1]
del diff[-1]
if len(s)=3D=3D1: s.append([])
s=3Ds[1]
loc=3D-1
for i in range(len(s)):
if s[i][0]=3D=3Did:
loc=3Di
break
if loc >=3D 0:
if not diff and not expand:
del s[loc]
else:
s=3Ds[loc]
elif diff or expand:
s.append([id,[]])
s=3Ds[-1][1]
while diff:
id=3Ddiff[-1]
del diff[-1]
if diff or expand:
s.append([id,[]])
s=3Ds[-1][1]
def encode_seq(state):
"Convert a sequence to an encoded string"
state=3Dcompress(str(state))
l=3Dlen(state)
if l > 57:
states=3D[]
for i in range(0,l,57):
states.append(b2a_base64(state[i:i+57])[:-1])
state=3Djoin(states,'')
else: state=3Db2a_base64(state)[:-1]
l=3Dfind(state,'=3D')
if l >=3D 0: state=3Dstate[:l]
=20
state=3Dtranslate(state, tplus)
return state
def encode_str(state):
"Convert a sequence to an encoded string"
l=3Dlen(state)
if l > 57:
states=3D[]
for i in range(0,l,57):
states.append(b2a_base64(state[i:i+57])[:-1])
state=3Djoin(states,'')
else: state=3Db2a_base64(state)[:-1]
l=3Dfind(state,'=3D')
if l >=3D 0: state=3Dstate[:l]
=20
state=3Dtranslate(state, tplus)
return state
def decode_seq(state):
"Convert an encoded string to a sequence"
state=3Dtranslate(state, tminus)
l=3Dlen(state)
if l > 76:
states=3D[]
j=3D0
for i in range(l/76):
k=3Dj+76
states.append(a2b_base64(state[j:k]))
j=3Dk
if j < l:
state=3Dstate[j:]
l=3Dlen(state)
k=3Dl%4
if k: state=3Dstate+'=3D'*(4-k)
states.append(a2b_base64(state))
state=3Djoin(states,'')
else:
l=3Dlen(state)
k=3Dl%4
if k: state=3Dstate+'=3D'*(4-k)
state=3Da2b_base64(state)
state=3Ddecompress(state)
if find(state,'*') >=3D 0: raise 'Illegal State', state
try: return list(eval(state,{'__builtins__':{}}))
except: return []
=20
def tpStateLevel(state, level=3D0):
for sub in state:
if len(sub)=3D=3D2: level =3D max(level, 1+tpStateLevel(sub[1]))
else: level=3Dmax(level,1)
return level
def tpValuesIds(self, get_items, args,
simple_type=3D{type(''):0, type(1):0, =
type(1.0):0}.has_key,
):
# get_item(node) is a function that returns the subitems of node
# This should build the ids of subitems which are
# expandable (non-empty). Leaves should never be
# in the state - it will screw the colspan counting.
r=3D[]
idattr=3Dargs['id']
try:
try: items=3Dget_items(self)
except AttributeError: items=3D()
for item in items:
try:
if get_items(item):
if hasattr(item, idattr):
id=3Dgetattr(item, idattr)
if not simple_type(type(id)): id=3Did() =
=20
elif hasattr(item, '_p_oid'): id=3Doid(item)
else: id=3Dpyid(item)
e=3DtpValuesIds(item, get_items, args)
if e: id=3D[id,e]
else: id=3D[id]
r.append(id)
except: pass
except: pass
return r
def oid(self):
return b2a_base64(str(self._p_oid))[:-1]
=20
#icoSpace=3D'<IMG SRC=3D"Blank_icon" BORDER=3D"0">'
#icoPlus =3D'<IMG SRC=3D"Plus_icon" BORDER=3D"0">'
#icoMinus=3D'<IMG SRC=3D"Minus_icon" BORDER=3D"0">'
------=_NextPart_000_0237_01C0218E.C6A7C410--