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Commit fca499c4 authored by Jean-Paul Smets's avatar Jean-Paul Smets
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Added large comments and implemented list rendering 


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@1257 20353a03-c40f-0410-a6d1-a30d3c3de9de
parent f3eb09bf
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Showing with 129 additions and 37 deletions
product/ERP5Form/ListBox.py
View file @ fca499c4
......@@ -27,6 +27,7 @@
##############################################################################
import string, types, sys
from AccessControl import ClassSecurityInfo
from Products.Formulator.DummyField import fields
from Products.Formulator import Widget, Validator
from Products.Formulator.Field import ZMIField
......@@ -317,12 +318,16 @@ class ListBoxWidget(Widget.Widget):
default='',
required=1)
def render(self, field, key, value, REQUEST):
def render(self, field, key, value, REQUEST, render_format='html'):
"""
This is where most things happen. This method renders a list
of items
"""
# First grasp the variables we may need
###############################################################
#
# First, grasp and intialize the variables we may need later
#
###############################################################
here = REQUEST['here']
reset = REQUEST.get('reset', 0)
......@@ -480,10 +485,15 @@ class ListBoxWidget(Widget.Widget):
params['meta_type'] = filtered_meta_types
params['portal_type'] = filtered_portal_types
###############################################################
#
# Build the columns selections
#
# The idea is: instead of selecting *, listbox is able to
# provide what should be selected. This should allow to reduce
# the quantity of data transfered between MySQL and Zope
#
###############################################################
extended_columns = []
sql_columns = []
for (sql, title) in columns:
......@@ -505,7 +515,12 @@ class ListBoxWidget(Widget.Widget):
sql_columns_string = string.join(sql_columns,' , ')
params['select_columns'] = sql_columns_string
###############################################################
#
# Execute the query
#
###############################################################
kw = params
# XXX Remove selection_expression if present.
......@@ -593,10 +608,16 @@ class ListBoxWidget(Widget.Widget):
#LOG('ListBox', 0, 'list_method = %s, list_method.__dict__ = %s' % (repr(list_method), repr((list_method.__dict__))))
# When we build the body, we have to go through
# All report lines
# This is made as a list of tuples
###############################################################
#
# Build the report tree
#
# When we build the body, we have to go through all report lines
#
# Each report line is a tuple of the form:
# (section_id, object_list, object_list_size, is_summary)
#
###############################################################
report_query = ''
if report_tree:
original_query = kw.get('query')
......@@ -658,7 +679,7 @@ class ListBoxWidget(Widget.Widget):
else:
# If list_method is None, use already selected values.
object_list = here.portal_selections.getSelectionValueList(selection_name, context=here, REQUEST=REQUEST)
# PERFORMANCE
# # PERFORMANCE ? is len(object_list) fast enough ?
report_sections += [ (None, 0, s[2], object_list, len(object_list), s[3]) ]
if original_query is not None:
kw['query'] = original_query
......@@ -673,33 +694,50 @@ class ListBoxWidget(Widget.Widget):
else:
# If list_method is None, use already selected values.
object_list = here.portal_selections.getSelectionValueList(selection_name, context=here, REQUEST=REQUEST)
# PERFORMANCE
# PERFORMANCE PROBLEM ? is len(object_list) fast enough ?
report_sections = ( (None, 0, 0, object_list, len(object_list), 0), )
object_uid_list = map(lambda x: getattr(x, 'uid', None), object_list)
#LOG('ListBox.render, object_uid_list:',0,object_uid_list)
# Then construct the md5 corresponding this uid list
###############################################################
#
# Build an md5 signature of the selection
#
# It is calculated based on the selection uid list
# It is used in order to do some checks in scripts.
# For example, if we do delete objects, then we do have a list of
# objects to delete, but it is possible that on another tab the selection
# change, and then when we confirm the deletion, we don't delete what
# we want, so this is really dangerous. with this md5 we can check if the
# selection is the same
#
###############################################################
object_uid_list = map(lambda x: getattr(x, 'uid', None), object_list)
#LOG('ListBox.render, object_uid_list:',0,object_uid_list)
sorted_object_uid_list = copy(object_uid_list)
sorted_object_uid_list.sort()
md5_string = md5.new(str(sorted_object_uid_list)).hexdigest()
#md5_string = md5.new(str(object_uid_list)).digest()
#LOG("Selection", 0, str(selection.__dict__))
###############################################################
#
# Calculate list start and stop
#
# Build the real list by slicing it
# PERFORMANCE ANALYSIS: the result of the query should be
# if possible a lazy sequence
#
###############################################################
#LOG("Selection", 0, str(selection.__dict__))
total_size = 0
for s in report_sections:
total_size += s[4]
if render_format == 'list':
start = 0
end = total_size
else:
try:
start = REQUEST.get('list_start')
start = int(start)
......@@ -715,8 +753,14 @@ class ListBoxWidget(Widget.Widget):
kw['list_start'] = start
kw['list_lines'] = lines
# Store the resulting selection if list_method is not None
if list_method is not None:
###############################################################
#
# Store new selection values
#
# Store the resulting selection if list_method is not None and render_format is not list
#
###############################################################
if list_method is not None and render_format != 'list':
try:
method_path = getPath(here) + '/' + list_method.method_name
#LOG('ListBox', 0, 'method_path = %s, getPath = %s, list_method.method_name = %s' % (repr(method_path), repr(getPath(here)), repr(list_method.method_name)))
......@@ -731,6 +775,12 @@ class ListBoxWidget(Widget.Widget):
#LOG("Selection kw", 0, str(selection.selection_params))
here.portal_selections.setSelectionFor(selection_name, selection, REQUEST=REQUEST)
###############################################################
#
# Build HTML header and footer
#
###############################################################
# Provide the selection name
selection_line = """\
<input type="hidden" name="list_selection_name" value="%s" />
......@@ -938,8 +988,21 @@ onChange="submitAction(this.form,'%s/portal_selections/setReportRoot')">
else:
list_search = ''
# Build the tuple of columns
if render_format == 'list':
c_name_list = []
for cname in columns:
c_name_list.append(cname[1])
###############################################################
#
# Build lines
#
###############################################################
# Build Lines
list_body = ''
if render_format == 'list': list_result = [c_name_list] # Create initial list for list render format
section_index = 0
current_section_base_index = 0
current_section = report_sections[section_index]
......@@ -1002,6 +1065,7 @@ onChange="submitAction(this.form,'%s/portal_selections/setReportRoot')">
<input type="checkbox" %s value="%s" id="cb_%s" name="uids:list"/></td>
""" % (td_css, selected, o.uid , o.uid)
error_list = []
if render_format == 'list': list_result_item = [] # Start a new item for list render format
for cname in extended_columns:
sql = cname[0] # (sql, title, alias)
alias = cname[2] # (sql, title, alias)
......@@ -1090,6 +1154,9 @@ onChange="submitAction(this.form,'%s/portal_selections/setReportRoot')">
# This prevents from using standard display process
list_body = list_body + \
('<td class=\"%s%s\">%s%s</td>' % (td_css, error_css, cell_body, error_message))
# Add item to list_result_item for list render format
if render_format == 'list':
list_result_item.append(my_field._get_default(self.generate_field_key(), display_value, o))
else:
# Check if this object provides a specific URL method
url_method = getattr(o, 'getListItemUrl', None)
......@@ -1112,11 +1179,20 @@ onChange="submitAction(this.form,'%s/portal_selections/setReportRoot')">
except:
list_body = list_body + \
("<td class=\"%s\" align=\"%s\">%s</td>" % (td_css, td_align, attribute_value) )
# Add item to list_result_item for list render format
if render_format == 'list': list_result_item.append(attribute_value)
list_body = list_body + '</tr>'
if render_format == 'list':
list_result.append(list_result_item)
###############################################################
#
# Build statistics
#
###############################################################
# Call the stat_method
# Call the stat method
if show_stat:
stats = here.portal_selections.getSelectionStats(selection_name, REQUEST=REQUEST)
select_expression = ''
......@@ -1146,6 +1222,7 @@ onChange="submitAction(this.form,'%s/portal_selections/setReportRoot')">
count_results = selection(selection_method = stat_method,
context=here, REQUEST=REQUEST)
list_body = list_body + '<tr>'
if render_format == 'list': list_result_item = []
if report_tree:
list_body += '<td class="Data">&nbsp;</td>'
if select:
......@@ -1178,16 +1255,23 @@ onChange="submitAction(this.form,'%s/portal_selections/setReportRoot')">
list_body += '<td class="Data" align="right">%.2f</td>' % value
else:
list_body += '<td class="Data">' + str(value) + '</td>'
if render_format == 'list': list_result_item.append(value)
else:
list_body += '<td class="Data">&nbsp;</td>'
if render_format == 'list': list_result_item.append(None)
except:
list_body += '<td class="Data">&nbsp;</td>'
if render_format == 'list': list_result_item.append(None)
list_body += '</tr>'
list_html = header + selection_line + list_header + list_search + list_body + footer
#Create DomainTree Selector and DomainTree box
# Return list of brains here is render_as_list = 1
if render_format == 'list':
list_result.append(list_result_item)
return list_result
#Create DomainTree Selector and DomainTree box
if domain_tree:
select_tree_options = ''
for c in domain_root_list:
......@@ -1407,6 +1491,14 @@ class ListBox(ZMIField):
widget = ListBoxWidgetInstance
validator = ListBoxValidatorInstance
security = ClassSecurityInfo()
security.declareProtected('Access contents information', 'get_value')
def get_value(self, id, **kw):
if id == 'default' and kw.get('render_format') in ('list', ):
return self.widget.render(self, self.generate_field_key() , None , kw.get('REQUEST'), render_format=render_format)
else:
ZMIField.get_value(self, id, **kw)
# Psyco
import psyco
......
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