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"""
The Form class is a helper class that takes parameters and method
calls and can return html for a form with appropriate hooks for css
styling. It should allow you to display a form but have the
formatting and styling added by the class. You can worry less about
how it looks while still getting consistent, decent-looking forms.
Take a look at the FirstBoot class for an example of forms in action.
Copyright 2011-2013 James Vasile
This software is released to you (yes, you) under the terms of the GNU
Affero General Public License, version 3 or later, available at
<http://www.gnu.org/licenses/agpl.html>.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
"""
class Form():
def __init__(self, action=None, cls='form', title=None, onsubmit=None, name=None, message='', method="get"):
"""Note that there appears to be a bug in cherrypy whereby
forms submitted via post don't have their fields included in
kwargs for the default index method. So we use get by
default, though it's not as neat.
TODO: file bug on this w/ CherryPy project
"""
action = self.get_form_attrib_text('action', action)
onsubmit = self.get_form_attrib_text('onsubmit', onsubmit)
name = self.get_form_attrib_text('name', name)
self.pretext = ' <form class="%s" method="%s" %s%s%s>\n' % (cls, method, action, onsubmit, name)
if title:
self.pretext += ' <h2>%s</h2>\n' % title
if message:
self.message = "<h3>%s</h3>" % message
else:
self.message = ''
self.text = ''
self.end_text = "</form>\n"
def get_form_attrib_text(self, field, val):
if val:
return ' %s="%s"' % (field, val)
else:
return ''
def html(self, html):
self.text += html
def dropdown(self, label='', name=None, id=None, vals=None, select=None, onchange=''):
"""vals is a list of values.
select is the index in vals of the selected item. None means no item is selected yet."""
name, id = self.name_or_id(name, id)
self.text += (""" <label>
<span>%(label)s</span>
<select name="%(name)s" id="%(id)s" onchange="%(onchange)s">\n"""
% {'label':label, 'name':name, 'id':id, 'onchange':onchange})
for i in range(len(vals)):
v = vals[i]
if i == select:
selected = "SELECTED"
else:
selected = ''
self.text +=" <option value=\"%s\" %s>%s</option>\n" % (v, selected, v)
self.text += """ </select>
</label>\n"""
def dotted_quad(self, label='', name=None, id=None, quad=None):
name, id = self.name_or_id(name, id)
if not quad:
quad = [0,0,0,0]
self.text += """ <label>
<span>%(label)s</span>
<input type="text" class="inputtextnowidth" name="%(name)s0" id="%(id)s0" value="%(q0)s" maxlength="3" size="1"/><strong>.</strong>
<input type="text" class="inputtextnowidth" name="%(name)s1" id="%(id)s1" value="%(q1)s" maxlength="3" size="1"/><strong>.</strong>
<input type="text" class="inputtextnowidth" name="%(name)s2" id="%(id)s2" value="%(q2)s" maxlength="3" size="1"/><strong>.</strong>
<input type="text" class="inputtextnowidth" name="%(name)s3" id="%(id)s3" value="%(q3)s" maxlength="3" size="1"/>
</label>""" % {'label':label, 'name':name, 'id':id, 'q0':quad[0], 'q1':quad[1], 'q2':quad[2], 'q3':quad[3]}
def text_input(self, label='', name=None, id=None, type='text', value='', size=20):
name, id = self.name_or_id(name, id)
if type=="hidden":
self.text += '<input type="%s" class="inputtext" name="%s" id="%s" value="%s"/>' % (type, name, id, value)
else:
self.text += """ <label>
<span>%s</span>
<input type="%s" class="inputtext" name="%s" id="%s" value="%s" size="%s"/>
</label>""" % (label, type, name, id, value, size)
def hidden(self, name=None, id=None, value=''):
self.text_input(type="hidden", name=name, id=id, value=value)
def text_box(self, label='', name=None, id=None, value=""):
name, id = self.name_or_id(name, id)
self.text += """
<label>
<span>%s</span>
<textarea class="textbox" name="%s" id="%s">%s</textarea>
</label>""" % (label, name, id, value)
def submit(self, label='', name=None, id=None):
name, id = self.name_or_id(name, id)
self.text += """
<div class="submit">
<label><span></span>
<input type="submit" class="btn-primary" value="%s" name="%s" id="%s" />
</label></div>\n""" % (label, name, id)
def submit_row(self, buttons):
"""buttons is a list of tuples, each containing label, name, id. Name and id are optional."""
self.text += '<div class="submit"><label>'
button_text = ''
for button in buttons:
label = button[0]
try:
name = button[1]
except:
name = None
try:
id = button[2]
except:
id = None
name, id = self.name_or_id(name, id)
if button_text != '':
button_text += " "
button_text += '<input type="submit" class="btn-primary" value="%s" name="%s" id="%s" />\n' % (label, name, id)
self.text += '%s</div></label>' % button_text
def name_or_id(self, name, id):
if not name: name = id
if not id: id = name
if not name: name = ''
if not id: id = ''
return name, id
def checkbox(self, label='', name='', id='', checked=''):
name, id = self.name_or_id(name, id)
if checked:
checked = 'checked="on"'
self.text += """
<div class="checkbox">
<label>
<span>%s</span>
<input type=checkbox name="%s" id="%s" %s/>
</label></div>\n""" % (label, name, id, checked)
def get_checkbox(self, name='', id=''):
return '<input type=checkbox name="%s" id="%s" />\n' % self.name_or_id(name, id)
def render(self):
return self.pretext+self.message+self.text+self.end_text
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