forked from ScoDoc/ScoDoc
766 lines
30 KiB
Python
766 lines
30 KiB
Python
# -*- mode: python -*-
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# -*- coding: utf-8 -*-
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"""Simple form generator/validator
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E. Viennet 2005 - 2008
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v 1.2
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"""
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from types import BooleanType, StringType
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def TrivialFormulator(
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form_url,
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values,
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formdescription=(),
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initvalues={},
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method="post",
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enctype=None,
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submitlabel="OK",
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name=None,
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formid="tf",
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cssclass="",
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cancelbutton=None,
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submitbutton=True,
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submitbuttonattributes=[],
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top_buttons=False, # place buttons at top of form
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bottom_buttons=True, # buttons after form
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html_foot_markup="",
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readonly=False,
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is_submitted=False,
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):
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"""
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form_url : URL for this form
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initvalues : dict giving default values
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values : dict with all HTML form variables (may start empty)
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is_submitted: handle form as if already submitted
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Returns (status, HTML form, values)
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status = 0 (html to display),
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1 (ok, validated values in "values")
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-1 cancel (if cancelbutton specified)
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HTML form: html string (form to insert in your web page)
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values: None or, when the form is submitted and correctly filled,
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a dictionnary with the requeted values.
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formdescription: sequence [ (field, description), ... ]
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where description is a dict with following (optional) keys:
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default : default value for this field ('')
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title : text titre (default to field name)
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allow_null : if true, field can be left empty (default true)
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type : 'string', 'int', 'float' (default to string), 'list' (only for hidden)
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readonly : default False. if True, no form element, display current value.
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convert_numbers: covert int and float values (from string)
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allowed_values : list of possible values (default: any value)
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validator : function validating the field (called with (value,field)).
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min_value : minimum value (for floats and ints)
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max_value : maximum value (for floats and ints)
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explanation: text string to display next the input widget
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title_buble: help bubble on field title (needs bubble.js or equivalent)
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comment : comment, showed under input widget
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withcheckbox: if true, place a checkbox at the left of the input
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elem. Checked items will be returned in 'tf-checked'
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attributes: a liste of strings to put in the HTML form element
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template: HTML template for element
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HTML elements:
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input_type : 'text', 'textarea', 'password',
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'radio', 'menu', 'checkbox',
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'hidden', 'separator', 'file', 'date', 'boolcheckbox',
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'text_suggest'
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(default text)
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size : text field width
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rows, cols: textarea geometry
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labels : labels for radio or menu lists (associated to allowed_values)
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vertical: for checkbox; if true, vertical layout
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disabled_items: for checkbox, dict such that disabled_items[i] true if disabled checkbox
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To use text_suggest elements, one must:
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- specify options in text_suggest_options (a dict)
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- HTML page must load JS AutoSuggest.js and CSS autosuggest_inquisitor.css
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- bodyOnLoad must call JS function init_tf_form(formid)
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"""
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method = method.lower()
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if method == "get":
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enctype = None
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t = TF(
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form_url,
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values,
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formdescription,
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initvalues,
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method,
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enctype,
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submitlabel,
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name,
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formid,
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cssclass,
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cancelbutton=cancelbutton,
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submitbutton=submitbutton,
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submitbuttonattributes=submitbuttonattributes,
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top_buttons=top_buttons,
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bottom_buttons=bottom_buttons,
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html_foot_markup=html_foot_markup,
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readonly=readonly,
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is_submitted=is_submitted,
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)
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form = t.getform()
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if t.canceled():
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res = -1
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elif t.submitted() and t.result:
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res = 1
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else:
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res = 0
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return res, form, t.result
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class TF:
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def __init__(
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self,
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form_url,
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values,
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formdescription=[],
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initvalues={},
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method="POST",
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enctype=None,
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submitlabel="OK",
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name=None,
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formid="tf",
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cssclass="",
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cancelbutton=None,
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submitbutton=True,
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submitbuttonattributes=[],
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top_buttons=False, # place buttons at top of form
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bottom_buttons=True, # buttons after form
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html_foot_markup="", # html snippet put at the end, just after the table
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readonly=False,
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is_submitted=False,
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):
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self.form_url = form_url
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self.values = values
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self.formdescription = list(formdescription)
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self.initvalues = initvalues
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self.method = method
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self.enctype = enctype
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self.submitlabel = submitlabel
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if name:
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self.name = name
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else:
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self.name = formid # 'tf'
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self.formid = formid
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self.cssclass = cssclass
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self.cancelbutton = cancelbutton
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self.submitbutton = submitbutton
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self.submitbuttonattributes = submitbuttonattributes
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self.top_buttons = top_buttons
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self.bottom_buttons = bottom_buttons
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self.html_foot_markup = html_foot_markup
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self.readonly = readonly
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self.result = None
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self.is_submitted = is_submitted
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if readonly:
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self.top_buttons = self.bottom_buttons = False
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self.cssclass += " readonly"
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def submitted(self):
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"true if form has been submitted"
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if self.is_submitted:
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return True
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return self.values.get("%s-submitted" % self.formid, False)
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def canceled(self):
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"true if form has been canceled"
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return self.values.get("%s_cancel" % self.formid, False)
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def getform(self):
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"return HTML form"
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R = []
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msg = None
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self.setdefaultvalues()
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if self.submitted() and not self.readonly:
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msg = self.checkvalues()
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# display error message
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R.append(tf_error_message(msg))
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# form or view
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if self.readonly:
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R = R + self._ReadOnlyVersion(self.formdescription)
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else:
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R = R + self._GenForm()
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#
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return "\n".join(R)
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__str__ = getform
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__repr__ = getform
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def setdefaultvalues(self):
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"set default values and convert numbers to strings"
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for (field, descr) in self.formdescription:
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# special case for boolcheckbox
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if descr.get("input_type", None) == "boolcheckbox" and self.submitted():
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if not self.values.has_key(field):
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self.values[field] = 0
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else:
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self.values[field] = 1
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if not self.values.has_key(field):
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if descr.has_key("default"): # first: default in form description
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self.values[field] = descr["default"]
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else: # then: use initvalues dict
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self.values[field] = self.initvalues.get(field, "")
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if self.values[field] == None:
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self.values[field] = ""
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# convert numbers
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if type(self.values[field]) == type(1) or type(self.values[field]) == type(
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1.0
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):
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self.values[field] = str(self.values[field])
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#
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if not self.values.has_key("tf-checked"):
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if self.submitted():
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# si rien n'est coché, tf-checked n'existe plus dans la reponse
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self.values["tf-checked"] = []
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else:
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self.values["tf-checked"] = self.initvalues.get("tf-checked", [])
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self.values["tf-checked"] = [str(x) for x in self.values["tf-checked"]]
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def checkvalues(self):
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"check values. Store .result and returns msg"
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ok = 1
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msg = []
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for (field, descr) in self.formdescription:
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val = self.values[field]
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# do not check "unckecked" items
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if descr.get("withcheckbox", False):
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if not field in self.values["tf-checked"]:
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continue
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# null values
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allow_null = descr.get("allow_null", True)
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if not allow_null:
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if val == "" or val == None:
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msg.append(
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"Le champ '%s' doit être renseigné" % descr.get("title", field)
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)
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ok = 0
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# type
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typ = descr.get("type", "string")
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if val != "" and val != None:
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# check only non-null values
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if typ[:3] == "int":
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try:
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val = int(val)
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self.values[field] = val
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except:
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msg.append(
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"La valeur du champ '%s' doit être un nombre entier" % field
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)
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ok = 0
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elif typ == "float" or typ == "real":
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self.values[field] = self.values[field].replace(",", ".")
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try:
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val = float(val.replace(",", ".")) # allow ,
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self.values[field] = val
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except:
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msg.append(
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"La valeur du champ '%s' doit être un nombre" % field
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)
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ok = 0
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if typ[:3] == "int" or typ == "float" or typ == "real":
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if descr.has_key("min_value") and val < descr["min_value"]:
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msg.append(
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"La valeur (%d) du champ '%s' est trop petite (min=%s)"
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% (val, field, descr["min_value"])
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)
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ok = 0
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if descr.has_key("max_value") and val > descr["max_value"]:
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msg.append(
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"La valeur (%s) du champ '%s' est trop grande (max=%s)"
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% (val, field, descr["max_value"])
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)
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ok = 0
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# allowed values
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if descr.has_key("allowed_values"):
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if descr.get("input_type", None) == "checkbox":
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# for checkboxes, val is a list
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for v in val:
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if not v in descr["allowed_values"]:
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msg.append(
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"valeur invalide (%s) pour le champ '%s'" % (val, field)
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)
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ok = 0
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elif descr.get("input_type", None) == "boolcheckbox":
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pass
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elif not val in descr["allowed_values"]:
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msg.append("valeur invalide (%s) pour le champ '%s'" % (val, field))
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ok = 0
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if descr.has_key("validator"):
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if not descr["validator"](val, field):
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msg.append("valeur invalide (%s) pour le champ '%s'" % (val, field))
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ok = 0
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# boolean checkbox
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if descr.get("input_type", None) == "boolcheckbox":
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if int(val):
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self.values[field] = 1
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else:
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self.values[field] = 0
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# open('/tmp/toto','a').write('checkvalues: val=%s (%s) values[%s] = %s\n' % (val, type(val), field, self.values[field]))
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if descr.get("convert_numbers", False):
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if typ[:3] == "int":
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self.values[field] = int(self.values[field])
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elif typ == "float" or typ == "real":
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self.values[field] = float(self.values[field].replace(",", "."))
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if ok:
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self.result = self.values
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else:
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self.result = None
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return msg
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def _GenForm(self, method="", enctype=None, form_url=""):
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values = self.values
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add_no_enter_js = False # add JS function to prevent 'enter' -> submit
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# form template
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# default template for each input element
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itemtemplate = """<tr%(item_dom_attr)s>
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<td class="tf-fieldlabel">%(label)s</td><td class="tf-field">%(elem)s</td>
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</tr>
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"""
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hiddenitemtemplate = "%(elem)s"
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separatortemplate = '<tr%(item_dom_attr)s><td colspan="2">%(label)s</td></tr>'
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# ---- build form
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buttons_markup = ""
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if self.submitbutton:
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buttons_markup += (
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'<input type="submit" name="%s_submit" id="%s_submit" value="%s" %s/>'
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% (
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self.formid,
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self.formid,
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self.submitlabel,
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" ".join(self.submitbuttonattributes),
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)
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)
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if self.cancelbutton:
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buttons_markup += (
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' <input type="submit" name="%s_cancel" id="%s_cancel" value="%s"/>'
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% (self.formid, self.formid, self.cancelbutton)
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)
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R = []
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suggest_js = []
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if self.enctype is None:
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if self.method == "post":
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enctype = "multipart/form-data"
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else:
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enctype = "application/x-www-form-urlencoded"
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if self.cssclass:
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klass = ' class="%s"' % self.cssclass
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else:
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klass = ""
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name = self.name
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R.append(
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'<form action="%s" method="%s" id="%s" enctype="%s" name="%s" %s>'
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% (self.form_url, self.method, self.formid, enctype, name, klass)
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)
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R.append('<input type="hidden" name="%s-submitted" value="1"/>' % self.formid)
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if self.top_buttons:
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R.append(buttons_markup + "<p></p>")
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R.append('<table class="tf">')
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idx = 0
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for idx in range(len(self.formdescription)):
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(field, descr) = self.formdescription[idx]
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if descr.get("readonly", False):
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R.append(self._ReadOnlyElement(field, descr))
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continue
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wid = self.name + "_" + field
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size = descr.get("size", 12)
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rows = descr.get("rows", 5)
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cols = descr.get("cols", 60)
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title = descr.get("title", field.capitalize())
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title_bubble = descr.get("title_bubble", None)
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withcheckbox = descr.get("withcheckbox", False)
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input_type = descr.get("input_type", "text")
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item_dom_id = descr.get("dom_id", "")
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if item_dom_id:
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item_dom_attr = ' id="%s"' % item_dom_id
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else:
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item_dom_attr = ""
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# choix du template
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etempl = descr.get("template", None)
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if etempl is None:
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if input_type == "hidden":
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etempl = hiddenitemtemplate
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elif input_type == "separator":
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etempl = separatortemplate
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R.append(etempl % {"label": title, "item_dom_attr": item_dom_attr})
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continue
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else:
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etempl = itemtemplate
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lab = []
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lem = []
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if withcheckbox and input_type != "hidden":
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if field in values["tf-checked"]:
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checked = 'checked="checked"'
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else:
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checked = ""
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lab.append(
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'<input type="checkbox" name="%s:list" value="%s" onclick="tf_enable_elem(this)" %s/>'
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% ("tf-checked", field, checked)
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)
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if title_bubble:
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lab.append(
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'<a class="discretelink" href="" title="%s">%s</a>'
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% (title_bubble, title)
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)
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else:
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lab.append(title)
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#
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attribs = " ".join(descr.get("attributes", []))
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if (
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withcheckbox and not checked
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) or not descr.get( # desactive les element non coches:
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"enabled", True
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):
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attribs += ' disabled="true"'
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#
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if input_type == "text":
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lem.append(
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'<input type="text" name="%s" size="%d" id="%s" %s'
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% (field, size, wid, attribs)
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)
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if descr.get("return_focus_next", False): # and nextitemname:
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# JS code to focus on next element on 'enter' key
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# ceci ne marche que pour desactiver enter sous IE (pas Firefox)
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# lem.append('''onKeyDown="if(event.keyCode==13){
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# event.cancelBubble = true; event.returnValue = false;}"''')
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lem.append('onkeypress="return enter_focus_next(this, event);"')
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add_no_enter_js = True
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# lem.append('onchange="document.%s.%s.focus()"'%(name,nextitemname))
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# lem.append('onblur="document.%s.%s.focus()"'%(name,nextitemname))
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lem.append(('value="%(' + field + ')s" />') % values)
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elif input_type == "password":
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lem.append(
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'<input type="password" name="%s" id="%s" size="%d" %s'
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% (field, wid, size, attribs)
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)
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lem.append(('value="%(' + field + ')s" />') % values)
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elif input_type == "radio":
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labels = descr.get("labels", descr["allowed_values"])
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for i in range(len(labels)):
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if descr["allowed_values"][i] == values[field]:
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checked = 'checked="checked"'
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else:
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checked = ""
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lem.append(
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'<input type="radio" name="%s" value="%s" %s %s>%s</input>'
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% (
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field,
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descr["allowed_values"][i],
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checked,
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attribs,
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labels[i],
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)
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)
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elif input_type == "menu":
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lem.append('<select name="%s" id="%s" %s>' % (field, wid, attribs))
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labels = descr.get("labels", descr["allowed_values"])
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for i in range(len(labels)):
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if str(descr["allowed_values"][i]) == str(values[field]):
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selected = "selected"
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else:
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selected = ""
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lem.append(
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'<option value="%s" %s>%s</option>'
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% (descr["allowed_values"][i], selected, labels[i])
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)
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lem.append("</select>")
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elif input_type == "checkbox" or input_type == "boolcheckbox":
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if input_type == "checkbox":
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labels = descr.get("labels", descr["allowed_values"])
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else: # boolcheckbox
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labels = [""]
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descr["allowed_values"] = ["0", "1"]
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vertical = descr.get("vertical", False)
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disabled_items = descr.get("disabled_items", {})
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if vertical:
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lem.append("<table>")
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for i in range(len(labels)):
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if input_type == "checkbox":
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# from notes_log import log # debug only
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# log('checkbox: values[%s] = "%s"' % (field,repr(values[field]) ))
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# log("descr['allowed_values'][%s] = '%s'" % (i, repr(descr['allowed_values'][i])))
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if descr["allowed_values"][i] in values[field]:
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checked = 'checked="checked"'
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|
else:
|
|
checked = ""
|
|
else: # boolcheckbox
|
|
# open('/tmp/toto','a').write('GenForm: values[%s] = %s (%s)\n' % (field, values[field], type(values[field])))
|
|
try:
|
|
v = int(values[field])
|
|
except:
|
|
v = 0
|
|
if v:
|
|
checked = 'checked="checked"'
|
|
else:
|
|
checked = ""
|
|
if vertical:
|
|
lem.append("<tr><td>")
|
|
if disabled_items.get(i, False):
|
|
disab = 'disabled="1"'
|
|
ilab = (
|
|
'<span class="tf-label-disabled">'
|
|
+ labels[i]
|
|
+ "</span> <em>(non modifiable)</em>"
|
|
)
|
|
else:
|
|
disab = ""
|
|
ilab = "<span>" + labels[i] + "</span>"
|
|
lem.append(
|
|
'<input type="checkbox" name="%s:list" value="%s" %s %s %s>%s</input>'
|
|
% (
|
|
field,
|
|
descr["allowed_values"][i],
|
|
attribs,
|
|
disab,
|
|
checked,
|
|
ilab,
|
|
)
|
|
)
|
|
if vertical:
|
|
lem.append("</tr></td>")
|
|
if vertical:
|
|
lem.append("</table>")
|
|
elif input_type == "textarea":
|
|
lem.append(
|
|
'<textarea name="%s" id="%s" rows="%d" cols="%d" %s>%s</textarea>'
|
|
% (field, wid, rows, cols, attribs, values[field])
|
|
)
|
|
elif input_type == "hidden":
|
|
if descr.get("type", "") == "list":
|
|
for v in values[field]:
|
|
lem.append(
|
|
'<input type="hidden" name="%s:list" value="%s" %s />'
|
|
% (field, v, attribs)
|
|
)
|
|
else:
|
|
lem.append(
|
|
'<input type="hidden" name="%s" id="%s" value="%s" %s />'
|
|
% (field, wid, values[field], attribs)
|
|
)
|
|
elif input_type == "separator":
|
|
pass
|
|
elif input_type == "file":
|
|
lem.append(
|
|
'<input type="file" name="%s" size="%s" value="%s" %s/>'
|
|
% (field, size, values[field], attribs)
|
|
)
|
|
elif input_type == "date": # JavaScript widget for date input
|
|
lem.append(
|
|
'<input type="text" name="%s" size="10" value="%s" class="datepicker"/>'
|
|
% (field, values[field])
|
|
)
|
|
elif input_type == "text_suggest":
|
|
lem.append(
|
|
'<input type="text" name="%s" id="%s" size="%d" %s'
|
|
% (field, field, size, attribs)
|
|
)
|
|
lem.append(('value="%(' + field + ')s" />') % values)
|
|
suggest_js.append(
|
|
"""var %s_opts = %s;
|
|
var %s_as = new bsn.AutoSuggest('%s', %s_opts);
|
|
"""
|
|
% (
|
|
field,
|
|
dict2js(descr.get("text_suggest_options", {})),
|
|
field,
|
|
field,
|
|
field,
|
|
)
|
|
)
|
|
else:
|
|
raise ValueError("unkown input_type for form (%s)!" % input_type)
|
|
explanation = descr.get("explanation", "")
|
|
if explanation:
|
|
lem.append('<span class="tf-explanation">%s</span>' % explanation)
|
|
comment = descr.get("comment", "")
|
|
if comment:
|
|
lem.append('<br/><span class="tf-comment">%s</span>' % comment)
|
|
R.append(
|
|
etempl
|
|
% {
|
|
"label": "\n".join(lab),
|
|
"elem": "\n".join(lem),
|
|
"item_dom_attr": item_dom_attr,
|
|
}
|
|
)
|
|
R.append("</table>")
|
|
|
|
R.append(self.html_foot_markup)
|
|
|
|
if self.bottom_buttons:
|
|
R.append("<br/>" + buttons_markup)
|
|
|
|
if add_no_enter_js:
|
|
R.append(
|
|
"""<script type="text/javascript">
|
|
function enter_focus_next (elem, event) {
|
|
var cod = event.keyCode ? event.keyCode : event.which ? event.which : event.charCode;
|
|
var enter = false;
|
|
if (event.keyCode == 13)
|
|
enter = true;
|
|
if (event.which == 13)
|
|
enter = true;
|
|
if (event.charCode == 13)
|
|
enter = true;
|
|
if (enter) {
|
|
var focused = false;
|
|
var i;
|
|
for (i = 0; i < elem.form.elements.length; i++)
|
|
if (elem == elem.form.elements[i])
|
|
break;
|
|
i = i + 1;
|
|
while (i < elem.form.elements.length) {
|
|
if ((elem.form.elements[i].type == "text")
|
|
&& (!(elem.form.elements[i].disabled))
|
|
&& ($(elem.form.elements[i]).is(':visible')))
|
|
{
|
|
elem.form.elements[i].focus();
|
|
focused = true;
|
|
break;
|
|
}
|
|
i = i + 1;
|
|
}
|
|
if (!focused) {
|
|
elem.blur();
|
|
}
|
|
return false;
|
|
}
|
|
else
|
|
return true;
|
|
}</script>
|
|
"""
|
|
) # enter_focus_next, ne focus que les champs text
|
|
if suggest_js:
|
|
# nota: formid is currently ignored
|
|
# => only one form with text_suggest field on a page.
|
|
R.append(
|
|
"""<script type="text/javascript">
|
|
function init_tf_form(formid) {
|
|
%s
|
|
}
|
|
</script>"""
|
|
% "\n".join(suggest_js)
|
|
)
|
|
# Javascript common to all forms:
|
|
R.append(
|
|
"""<script type="text/javascript">
|
|
// controle par la checkbox
|
|
function tf_enable_elem(checkbox) {
|
|
var oid = checkbox.value;
|
|
if (oid) {
|
|
var elem = document.getElementById(oid);
|
|
if (elem) {
|
|
if (checkbox.checked) {
|
|
elem.disabled = false;
|
|
} else {
|
|
elem.disabled = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Selections etendues avec shift (use jquery.field)
|
|
$('input[name="tf-checked:list"]').createCheckboxRange();
|
|
</script>"""
|
|
)
|
|
R.append("</form>")
|
|
return R
|
|
|
|
def _ReadOnlyElement(self, field, descr):
|
|
"Generate HTML for an element, read-only"
|
|
R = []
|
|
title = descr.get("title", field.capitalize())
|
|
input_type = descr.get("input_type", "text")
|
|
klass = descr.get("cssclass", "")
|
|
klass = " " + klass
|
|
if input_type == "hidden":
|
|
return ""
|
|
|
|
R.append('<tr class="tf-ro-tr%s">' % klass)
|
|
|
|
if input_type == "separator": # separator
|
|
R.append('<td colspan="2">%s' % title)
|
|
else:
|
|
R.append('<td class="tf-ro-fieldlabel%s">' % klass)
|
|
R.append("%s</td>" % title)
|
|
R.append('<td class="tf-ro-field%s">' % klass)
|
|
|
|
if input_type == "text" or input_type == "text_suggest":
|
|
R.append(("%(" + field + ")s") % self.values)
|
|
elif input_type in ("radio", "menu", "checkbox", "boolcheckbox"):
|
|
if input_type == "boolcheckbox":
|
|
labels = descr.get(
|
|
"labels", descr.get("allowed_values", ["oui", "non"])
|
|
)
|
|
# XXX open('/tmp/log', 'w').write('%s labels=%s, val=%s\ndescr=%s\n'%(field, labels, self.values[field], descr))
|
|
R.append(labels[int(self.values[field])])
|
|
if int(self.values[field]):
|
|
R.append('<input type="hidden" name="%s" value="1"/>' % field)
|
|
else:
|
|
labels = descr.get("labels", descr["allowed_values"])
|
|
for i in range(len(labels)):
|
|
if str(descr["allowed_values"][i]) == str(self.values[field]):
|
|
R.append('<span class="tf-ro-value">%s</span>' % labels[i])
|
|
elif input_type == "textarea":
|
|
R.append('<div class="tf-ro-textarea">%s</div>' % self.values[field])
|
|
elif input_type == "separator" or input_type == "hidden":
|
|
pass
|
|
elif input_type == "file":
|
|
R.append("'%s'" % self.values[field])
|
|
else:
|
|
raise ValueError("unkown input_type for form (%s)!" % input_type)
|
|
|
|
explanation = descr.get("explanation", "")
|
|
if explanation:
|
|
R.append('<span class="tf-explanation">%s</span>' % explanation)
|
|
|
|
R.append("</td></tr>")
|
|
|
|
return "\n".join(R)
|
|
|
|
def _ReadOnlyVersion(self, formdescription):
|
|
"Generate HTML for read-only view of the form"
|
|
R = ['<table class="tf-ro">']
|
|
for (field, descr) in formdescription:
|
|
R.append(self._ReadOnlyElement(field, descr))
|
|
R.append("</table>")
|
|
return R
|
|
|
|
|
|
def dict2js(d):
|
|
"""convert Python dict to JS code"""
|
|
r = []
|
|
for k in d:
|
|
v = d[k]
|
|
if type(v) == BooleanType:
|
|
if v:
|
|
v = "true"
|
|
else:
|
|
v = "false"
|
|
elif type(v) == StringType:
|
|
v = '"' + v + '"'
|
|
|
|
r.append("%s: %s" % (k, v))
|
|
return "{" + ",\n".join(r) + "}"
|
|
|
|
|
|
def tf_error_message(msg):
|
|
"""html for form error message"""
|
|
if not msg:
|
|
return ""
|
|
if type(msg) == StringType:
|
|
msg = [msg]
|
|
return (
|
|
'<ul class="tf-msg"><li class="tf-msg error-message">%s</li></ul>'
|
|
% '</li><li class="tf-msg">'.join(msg)
|
|
)
|