#!/usr/bin/python
+"""Main CGI script for web interface"""
-import sys
+import base64
+import cPickle
import cgi
+import datetime
+import getafsgroups
+import hmac
import os
+import random
+import re
+import sha
+import simplejson
import string
import subprocess
-import re
+import sys
import time
-import cPickle
-import base64
-import sha
-import hmac
-import datetime
-import StringIO
-import getafsgroups
+from StringIO import StringIO
+
+
+def revertStandardError():
+ """Move stderr to stdout, and return the contents of the old stderr."""
+ errio = sys.stderr
+ if not isinstance(errio, StringIO):
+ return None
+ sys.stderr = sys.stdout
+ errio.seek(0)
+ return errio.read()
+
+def printError():
+ """Revert stderr to stdout, and print the contents of stderr"""
+ if isinstance(sys.stderr, StringIO):
+ print revertStandardError()
+
+if __name__ == '__main__':
+ import atexit
+ atexit.register(printError)
+ sys.stderr = StringIO()
-errio = StringIO.StringIO()
-sys.stderr = errio
sys.path.append('/home/ecprice/.local/lib/python2.5/site-packages')
from Cheetah.Template import Template
from sipb_xen_database import *
-import random
class MyException(Exception):
"""Base class for my exceptions"""
"""Exception for internal errors or bad faith input."""
pass
+def helppopup(subj):
+ """Return HTML code for a (?) link to a specified help topic"""
+ return ('<span class="helplink"><a href="help?subject=' + subj +
+ '&simple=true" target="_blank" ' +
+ 'onclick="return helppopup(\'' + subj + '\')">(?)</a></span>')
+
class Global(object):
+ """Global state of the system, to avoid duplicate remctls to get state"""
def __init__(self, user):
self.user = user
return self._uptimes
uptimes = property(__get_uptimes)
-g = None
+ def clear(self):
+ """Clear the state so future accesses reload it."""
+ for attr in ('_uptimes', ):
+ if hasattr(self, attr):
+ delattr(self, attr)
-def helppopup(subj):
- """Return HTML code for a (?) link to a specified help topic"""
- return '<span class="helplink"><a href="help?subject='+subj+'&simple=true" target="_blank" onclick="return helppopup(\''+subj+'\')">(?)</a></span>'
-
-
-global_dict = {}
-global_dict['helppopup'] = helppopup
+g = None
+class User:
+ """User class (sort of useless, I admit)"""
+ def __init__(self, username, email):
+ self.username = username
+ self.email = email
+
+def makeErrorPre(old, addition):
+ if addition is None:
+ return
+ if old:
+ return old[:-6] + '\n----\n' + str(addition) + '</pre>'
+ else:
+ return '<p>STDERR:</p><pre>' + str(addition) + '</pre>'
+
+Template.helppopup = staticmethod(helppopup)
+Template.err = None
+
+class JsonDict:
+ """Class to store a dictionary that will be converted to JSON"""
+ def __init__(self, **kws):
+ self.data = kws
+ if 'err' in kws:
+ err = kws['err']
+ del kws['err']
+ self.addError(err)
+
+ def __str__(self):
+ return simplejson.dumps(self.data)
+
+ def addError(self, text):
+ """Add stderr text to be displayed on the website."""
+ self.data['err'] = \
+ makeErrorPre(self.data.get('err'), text)
+
+class Defaults:
+ """Class to store default values for fields."""
+ memory = 256
+ disk = 4.0
+ cdrom = ''
+ name = ''
+ vmtype = 'hvm'
+ def __init__(self, max_memory=None, max_disk=None, **kws):
+ if max_memory is not None:
+ self.memory = min(self.memory, max_memory)
+ if max_disk is not None:
+ self.max_disk = min(self.disk, max_disk)
+ for key in kws:
+ setattr(self, key, kws[key])
+
+
+
+default_headers = {'Content-Type': 'text/html'}
# ... and stolen from xend/uuid.py
def randomUUID():
for x in machines if x != machine])
return min(MAX_DISK_SINGLE, MAX_DISK_TOTAL-disk_usage/1024.)
-def canAddVm(user):
+def cantAddVm(user):
machines = getMachinesByOwner(user)
active_machines = [x for x in machines if g.uptimes[x]]
- return (len(machines) < MAX_VMS_TOTAL and
- len(active_machines) < MAX_VMS_ACTIVE)
+ if len(machines) >= MAX_VMS_TOTAL:
+ return 'You have too many VMs to create a new one.'
+ if len(active_machines) >= MAX_VMS_ACTIVE:
+ return ('You already have the maximum number of VMs turned on. '
+ 'To create more, turn one off.')
+ return False
def haveAccess(user, machine):
"""Return whether a user has adminstrative access to a machine"""
return True
if user.username in (machine.administrator, machine.owner):
return True
- if getafsgroups.checkAfsGroup(user.username, machine.administrator, 'athena.mit.edu'): #XXX Cell?
+ if getafsgroups.checkAfsGroup(user.username, machine.administrator,
+ 'athena.mit.edu'): #XXX Cell?
return True
if getafsgroups.checkLockerOwner(user.username, machine.owner):
return True
"""Print an error page when a CodeError occurs"""
d = dict(op=op, user=user, errorMessage=str(err),
stderr=emsg)
- return Template(file='error.tmpl', searchList=[d, global_dict]);
+ return Template(file='error.tmpl', searchList=[d]);
def invalidInput(op, user, fields, err, emsg):
"""Print an error page when an InvalidInput exception occurs"""
d = dict(op=op, user=user, err_field=err.err_field,
err_value=str(err.err_value), stderr=emsg,
errorMessage=str(err))
- return Template(file='invalid.tmpl', searchList=[d, global_dict]);
+ return Template(file='invalid.tmpl', searchList=[d]);
def validMachineName(name):
"""Check that name is valid for a machine name"""
+ list(args),
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
+ v = p.wait()
if kws.get('err'):
- p.wait()
return p.stdout.read(), p.stderr.read()
- if p.wait():
- print >> sys.stderr, 'Error on remctl', args, ':'
+ if v:
+ print >> sys.stderr, 'Error', v, 'on remctl', args, ':'
print >> sys.stderr, p.stderr.read()
raise CodeError('ERROR on remctl')
return p.stdout.read()
Gets and parses xm list --long
"""
- value_string, err_string = remctl('control', machine.name, 'list-long', err=True)
+ value_string, err_string = remctl('control', machine.name, 'list-long',
+ err=True)
if 'Unknown command' in err_string:
- raise CodeError("ERROR in remctl list-long %s is not registered" % (machine.name,))
+ raise CodeError("ERROR in remctl list-long %s is not registered" %
+ (machine.name,))
elif 'does not exist' in err_string:
return None
elif err_string:
- raise CodeError("ERROR in remctl list-long %s: %s" % (machine.name, err_string))
+ raise CodeError("ERROR in remctl list-long %s: %s" %
+ (machine.name, err_string))
status = parseStatus(value_string)
return status
if disk > maxDisk(user) * 1024:
raise InvalidInput('disk', disk,
"Max %s" % maxDisk(user))
- if not canAddVm(user):
- raise InvalidInput('create', True, 'Unable to create more VMs')
- res = meta.engine.execute('select nextval(\'"machines_machine_id_seq"\')')
+ reason = cantAddVm(user)
+ if reason:
+ raise InvalidInput('create', True, reason)
+ res = meta.engine.execute('select nextval('
+ '\'"machines_machine_id_seq"\')')
id = res.fetchone()[0]
machine = Machine()
machine.machine_id = id
ctx.current.save(machine)
disk = Disk(machine.machine_id,
'hda', disk)
- open = NIC.select_by(machine_id=None)
- if not open: #No IPs left!
- raise CodeError("No IP addresses left! Contact sipb-xen-dev@mit.edu")
- nic = open[0]
+ open_nics = NIC.select_by(machine_id=None)
+ if not open_nics: #No IPs left!
+ raise CodeError("No IP addresses left! "
+ "Contact sipb-xen-dev@mit.edu")
+ nic = open_nics[0]
nic.machine_id = machine.machine_id
nic.hostname = name
ctx.current.save(nic)
"Minimum %s GB" % MIN_DISK_SINGLE)
return disk
-def create(user, fields):
- """Handler for create requests."""
+def parseCreate(user, fields):
name = fields.getfirst('name')
if not validMachineName(name):
- raise InvalidInput('name', name)
+ raise InvalidInput('name', name, 'You must provide a machine name.')
name = name.lower()
if Machine.get_by(name=name):
raise InvalidInput('name', name,
- "Already exists")
+ "Name already exists.")
memory = fields.getfirst('memory')
memory = validMemory(user, memory, on=True)
cdrom = fields.getfirst('cdrom')
if cdrom is not None and not CDROM.get(cdrom):
- raise CodeError("Invalid cdrom type '%s'" % cdrom)
-
- machine = createVm(user, name, memory, disk, is_hvm, cdrom)
- d = dict(user=user,
- machine=machine)
- return Template(file='create.tmpl',
- searchList=[d, global_dict]);
+ raise CodeError("Invalid cdrom type '%s'" % cdrom)
+ return dict(user=user, name=name, memory=memory, disk=disk,
+ is_hvm=is_hvm, cdrom=cdrom)
-def listVms(user, fields):
- """Handler for list requests."""
+def create(user, fields):
+ """Handler for create requests."""
+ js = fields.getfirst('js')
+ try:
+ parsed_fields = parseCreate(user, fields)
+ machine = createVm(**parsed_fields)
+ except InvalidInput, err:
+ if not js:
+ raise
+ else:
+ err = None
+ if not js:
+ d = dict(user=user,
+ machine=machine)
+ return Template(file='create.tmpl', searchList=[d])
+ g.clear() #Changed global state
+ d = getListDict(user)
+ d['err'] = err
+ if err:
+ for field in fields.keys():
+ setattr(d['defaults'], field, fields.getfirst(field))
+ else:
+ d['new_machine'] = parsed_fields['name']
+ t = Template(file='list.tmpl', searchList=[d])
+ return JsonDict(createtable=t.createTable(),
+ machinelist=t.machineList(d['machines']))
+
+
+def getListDict(user):
machines = [m for m in Machine.select() if haveAccess(user, m)]
on = {}
has_vnc = {}
on = g.uptimes
for m in machines:
+ m.uptime = g.uptimes.get(m)
if not on[m]:
has_vnc[m] = 'Off'
elif m.type.hvm:
# status = statusInfo(m)
# on[m.name] = status is not None
# has_vnc[m.name] = hasVnc(status)
- max_mem=maxMemory(user)
- max_disk=maxDisk(user)
+ max_memory = maxMemory(user)
+ max_disk = maxDisk(user)
+ defaults = Defaults(max_memory=max_memory,
+ max_disk=max_disk,
+ cdrom='gutsy-i386')
d = dict(user=user,
- can_add_vm=canAddVm(user),
- max_mem=max_mem,
+ cant_add_vm=cantAddVm(user),
+ max_memory=max_memory,
max_disk=max_disk,
- default_mem=max_mem,
- default_disk=min(4.0, max_disk),
+ defaults=defaults,
machines=machines,
has_vnc=has_vnc,
uptimes=g.uptimes,
cdroms=CDROM.select())
- return Template(file='list.tmpl', searchList=[d, global_dict])
+ return d
+def listVms(user, fields):
+ """Handler for list requests."""
+ d = getListDict(user)
+ t = Template(file='list.tmpl', searchList=[d])
+ js = fields.getfirst('js')
+ if not js:
+ return t
+ if js == 'machinelist':
+ return t.machineList(d['machines'])
+ elif js.startswith('machinerow-'):
+ request_machine_id = int(js.split('-')[1])
+ m = [x for x in d['machines'] if x.id == request_machine_id]
+ return t.machineRow(m)
+ elif js == 'createtable':
+ return t.createTable()
+
def testMachineId(user, machineId, exists=True):
"""Parse, validate and check authorization for a given machineId.
You might want iptables like:
- -t nat -A PREROUTING -s ! 18.181.0.60 -i eth1 -p tcp -m tcp --dport 10003 -j DNAT --to-destination 18.181.0.60:10003
- -t nat -A POSTROUTING -d 18.181.0.60 -o eth1 -p tcp -m tcp --dport 10003 -j SNAT --to-source 18.187.7.142
- -A FORWARD -d 18.181.0.60 -i eth1 -o eth1 -p tcp -m tcp --dport 10003 -j ACCEPT
+ -t nat -A PREROUTING -s ! 18.181.0.60 -i eth1 -p tcp -m tcp \
+ --dport 10003 -j DNAT --to-destination 18.181.0.60:10003
+ -t nat -A POSTROUTING -d 18.181.0.60 -o eth1 -p tcp -m tcp \
+ --dport 10003 -j SNAT --to-source 18.187.7.142
+ -A FORWARD -d 18.181.0.60 -i eth1 -o eth1 -p tcp -m tcp \
+ --dport 10003 -j ACCEPT
Remember to enable iptables!
echo 1 > /proc/sys/net/ipv4/ip_forward
data = {}
data["user"] = user.username
- data["machine"]=machine.name
- data["expires"]=time.time()+(5*60)
- pickledData = cPickle.dumps(data)
+ data["machine"] = machine.name
+ data["expires"] = time.time()+(5*60)
+ pickled_data = cPickle.dumps(data)
m = hmac.new(TOKEN_KEY, digestmod=sha)
- m.update(pickledData)
- token = {'data': pickledData, 'digest': m.digest()}
+ m.update(pickled_data)
+ token = {'data': pickled_data, 'digest': m.digest()}
token = cPickle.dumps(token)
token = base64.urlsafe_b64encode(token)
machine=machine,
hostname=os.environ.get('SERVER_NAME', 'localhost'),
authtoken=token)
- return Template(file='vnc.tmpl',
- searchList=[d, global_dict])
+ return Template(file='vnc.tmpl', searchList=[d])
def getNicInfo(data_dict, machine):
"""Helper function for info, get data on nics for a machine.
nic_fields = []
for i in range(len(machine.nics)):
nic_fields.extend([(x % i, y % i) for x, y in nic_fields_template])
- data_dict['nic%s_hostname' % i] = machine.nics[i].hostname + '.servers.csail.mit.edu'
+ data_dict['nic%s_hostname' % i] = (machine.nics[i].hostname +
+ '.servers.csail.mit.edu')
data_dict['nic%s_mac' % i] = machine.nics[i].mac_addr
data_dict['nic%s_ip' % i] = machine.nics[i].ip
if len(machine.nics) == 1:
disk_fields = []
for disk in machine.disks:
name = disk.guest_device_name
- disk_fields.extend([(x % name, y % name) for x, y in disk_fields_template])
+ disk_fields.extend([(x % name, y % name) for x, y in
+ disk_fields_template])
data_dict['%s_size' % name] = "%0.1f GB" % (disk.size / 1024.)
return disk_fields
"""Delete a VM."""
remctl('control', machine.name, 'destroy', err=True)
transaction = ctx.current.create_transaction()
- delete_disk_pairs = [(machine.name, d.guest_device_name) for d in machine.disks]
+ delete_disk_pairs = [(machine.name, d.guest_device_name)
+ for d in machine.disks]
try:
for nic in machine.nics:
nic.machine_id = None
remctl('web', 'lvremove', mname, dname)
unregisterMachine(machine)
-def command(user, fields):
- """Handler for running commands like boot and delete on a VM."""
+def commandResult(user, fields):
print >> sys.stderr, time.time()-start_time
machine = testMachineId(user, fields.getfirst('machine_id'))
action = fields.getfirst('action')
print >> sys.stderr, time.time()-start_time
if cdrom is not None and not CDROM.get(cdrom):
raise CodeError("Invalid cdrom type '%s'" % cdrom)
- if action not in ('Reboot', 'Power on', 'Power off', 'Shutdown', 'Delete VM'):
+ if action not in ('Reboot', 'Power on', 'Power off', 'Shutdown',
+ 'Delete VM'):
raise CodeError("Invalid action '%s'" % action)
if action == 'Reboot':
if cdrom is not None:
- remctl('control', machine.name, 'reboot', cdrom)
+ out, err = remctl('control', machine.name, 'reboot', cdrom,
+ err=True)
else:
- remctl('control', machine.name, 'reboot')
+ out, err = remctl('control', machine.name, 'reboot',
+ err=True)
+ if err:
+ if re.match("Error: Domain '.*' does not exist.", err):
+ raise InvalidInput("action", "reboot",
+ "Machine is not on")
+ else:
+ print >> sys.stderr, 'Error on reboot:'
+ print >> sys.stderr, err
+ raise CodeError('ERROR on remctl')
+
elif action == 'Power on':
if maxMemory(user) < machine.memory:
raise InvalidInput('action', 'Power on',
- "You don't have enough free RAM quota to turn on this machine")
+ "You don't have enough free RAM quota "
+ "to turn on this machine.")
bootMachine(machine, cdrom)
elif action == 'Power off':
- remctl('control', machine.name, 'destroy')
+ out, err = remctl('control', machine.name, 'destroy', err=True)
+ if err:
+ if re.match("Error: Domain '.*' does not exist.", err):
+ raise InvalidInput("action", "Power off",
+ "Machine is not on.")
+ else:
+ print >> sys.stderr, 'Error on power off:'
+ print >> sys.stderr, err
+ raise CodeError('ERROR on remctl')
elif action == 'Shutdown':
- remctl('control', machine.name, 'shutdown')
+ out, err = remctl('control', machine.name, 'shutdown', err=True)
+ if err:
+ if re.match("Error: Domain '.*' does not exist.", err):
+ raise InvalidInput("action", "Shutdown",
+ "Machine is not on.")
+ else:
+ print >> sys.stderr, 'Error on Shutdown:'
+ print >> sys.stderr, err
+ raise CodeError('ERROR on remctl')
elif action == 'Delete VM':
deleteVM(machine)
print >> sys.stderr, time.time()-start_time
d = dict(user=user,
command=action,
machine=machine)
- return Template(file="command.tmpl", searchList=[d, global_dict])
+ return d
+
+def command(user, fields):
+ """Handler for running commands like boot and delete on a VM."""
+ js = fields.getfirst('js')
+ try:
+ d = commandResult(user, fields)
+ except InvalidInput, err:
+ if not js:
+ raise
+ result = None
+ else:
+ err = None
+ result = 'Success!'
+ if not js:
+ return Template(file='command.tmpl', searchList=[d])
+ if js == 'list':
+ g.clear() #Changed global state
+ d = getListDict(user)
+ t = Template(file='list.tmpl', searchList=[d])
+ return JsonDict(createtable=t.createTable(),
+ machinelist=t.machineList(d['machines']),
+ result=result,
+ err=err)
+ elif js == 'info':
+ machine = testMachineId(user, fields.getfirst('machine_id'))
+ d = infoDict(user, machine)
+ t = Template(file='info.tmpl', searchList=[d])
+ return JsonDict(info=t.infoTable(),
+ commands=t.commands(),
+ modify=t.modifyForm(),
+ result=result,
+ err=err)
+ else:
+ raise InvalidInput('js', js, 'Not a known js type.')
def testAdmin(user, admin, machine):
if admin in (None, machine.administrator):
return admin
if getafsgroups.checkAfsGroup(user.username, admin, 'athena.mit.edu'):
return admin
- if getafsgroups.checkAfsGroup(user.username, 'system:'+admin, 'athena.mit.edu'):
+ if getafsgroups.checkAfsGroup(user.username, 'system:'+admin,
+ 'athena.mit.edu'):
return 'system:'+admin
- raise InvalidInput('admin', admin,
- 'You must control the group you move it to')
+ raise InvalidInput('administrator', admin,
+ 'You must control the group you move it to.')
def testOwner(user, owner, machine):
if owner in (None, machine.owner):
return None
- #XXX should you be able to transfer ownership if you don't already own it?
- #if not owns(user, machine):
- # raise InvalidInput('owner', owner, "You don't own this machine, so you can't transfer ownership")
value = getafsgroups.checkLockerOwner(user.username, owner, verbose=True)
if value == True:
return owner
if contact in (None, machine.contact):
return None
if not re.match("^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$", contact, re.I):
- raise InvalidInput('contact', contact, "Not a valid email")
+ raise InvalidInput('contact', contact, "Not a valid email.")
return contact
def testDisk(user, disksize, machine=None):
return None
if not Machine.select_by(name=name):
return name
- raise InvalidInput('name', name, "Already taken")
+ raise InvalidInput('name', name, "Name is already taken.")
def testHostname(user, hostname, machine):
for nic in machine.nics:
raise InvalidInput('hostname', hostname,
"Already exists")
if not re.match("^[A-Z0-9-]{1,22}$", hostname, re.I):
- raise InvalidInput('hostname', hostname, "Not a valid hostname; must only use number, letters, and dashes.")
+ raise InvalidInput('hostname', hostname, "Not a valid hostname; "
+ "must only use number, letters, and dashes.")
return hostname
-def modify(user, fields):
- """Handler for modifying attributes of a machine."""
-
+def modifyDict(user, fields):
olddisk = {}
transaction = ctx.current.create_transaction()
try:
hostname = testHostname(owner, fields.getfirst('hostname'), machine)
name = testName(user, fields.getfirst('name'), machine)
oldname = machine.name
- command="modify"
+ command = "modify"
memory = fields.getfirst('memory')
if memory is not None:
disk.size = disksize
ctx.current.save(disk)
- # XXX first NIC gets hostname on change? Interface doesn't support more.
+ # XXX first NIC gets hostname on change?
+ # Interface doesn't support more.
for nic in machine.nics[:1]:
nic.hostname = hostname
ctx.current.save(nic)
for disk in machine.disks:
remctl("web", "lvrename", oldname, disk.guest_device_name, name)
remctl("web", "moveregister", oldname, name)
- d = dict(user=user,
- command=command,
- machine=machine)
- return Template(file="command.tmpl", searchList=[d, global_dict])
-
+ return dict(user=user,
+ command=command,
+ machine=machine)
+
+def modify(user, fields):
+ """Handler for modifying attributes of a machine."""
+ js = fields.getfirst('js')
+ try:
+ modify_dict = modifyDict(user, fields)
+ except InvalidInput, err:
+ if not js:
+ raise
+ result = ''
+ machine = testMachineId(user, fields.getfirst('machine_id'))
+ else:
+ machine = modify_dict['machine']
+ result='Success!'
+ err = None
+ if not js:
+ return Template(file='command.tmpl', searchList=[modify_dict])
+ info_dict = infoDict(user, machine)
+ info_dict['err'] = err
+ if err:
+ for field in fields.keys():
+ setattr(info_dict['defaults'], field, fields.getfirst(field))
+ t = Template(file='info.tmpl', searchList=[info_dict])
+ return JsonDict(info=t.infoTable(),
+ commands=t.commands(),
+ modify=t.modifyForm(),
+ result=result,
+ err=err)
+
-def help(user, fields):
+def helpHandler(user, fields):
"""Handler for help messages."""
simple = fields.getfirst('simple')
subjects = fields.getlist('subject')
- mapping = dict(paravm_console="""
+ help_mapping = dict(paravm_console="""
ParaVM machines do not support console access over VNC. To access
these machines, you either need to boot with a liveCD and ssh in or
hope that the sipb-xen maintainers add support for serial consoles.""",
- hvm_paravm="""
+ hvm_paravm="""
HVM machines use the virtualization features of the processor, while
ParaVM machines use Xen's emulation of virtualization features. You
want an HVM virtualized machine.""",
- cpu_weight="""Don't ask us! We're as mystified as you are.""",
- owner="""The owner field is used to determine <a href="help?subject=quotas">quotas</a>. It must be the name
-of a locker that you are an AFS administrator of. In particular, you
-or an AFS group you are a member of must have AFS rlidwka bits on the
+ cpu_weight="""
+Don't ask us! We're as mystified as you are.""",
+ owner="""
+The owner field is used to determine <a
+href="help?subject=quotas">quotas</a>. It must be the name of a
+locker that you are an AFS administrator of. In particular, you or an
+AFS group you are a member of must have AFS rlidwka bits on the
locker. You can check see who administers the LOCKER locker using the
-command 'fs la /mit/LOCKER' on Athena.) See also <a href="help?subject=administrator">administrator</a>.""",
- administrator="""The administrator field determines who can access the console and power on and off the machine. This can be either a user or a moira group.""",
- quotas="""Quotas are determined on a per-locker basis. Each
-quota may have a maximum of 512 megabytes of active ram, 50 gigabytes of disk, and 4 active machines."""
-
+command 'fs la /mit/LOCKER' on Athena.) See also <a
+href="help?subject=administrator">administrator</a>.""",
+ administrator="""
+The administrator field determines who can access the console and
+power on and off the machine. This can be either a user or a moira
+group.""",
+ quotas="""
+Quotas are determined on a per-locker basis. Each quota may have a
+maximum of 512 megabytes of active ram, 50 gigabytes of disk, and 4
+active machines."""
)
if not subjects:
- subjects = sorted(mapping.keys())
+ subjects = sorted(help_mapping.keys())
d = dict(user=user,
simple=simple,
subjects=subjects,
- mapping=mapping)
+ mapping=help_mapping)
- return Template(file="help.tmpl", searchList=[d, global_dict])
+ return Template(file="help.tmpl", searchList=[d])
-def info(user, fields):
- """Handler for info on a single VM."""
- machine = testMachineId(user, fields.getfirst('machine_id'))
+def badOperation(u, e):
+ raise CodeError("Unknown operation")
+
+def infoDict(user, machine):
status = statusInfo(machine)
has_vnc = hasVnc(status)
if status is None:
main_status = dict(name=machine.name,
memory=str(machine.memory))
- uptime=None
- cputime=None
+ uptime = None
+ cputime = None
else:
main_status = dict(status[1:])
start_time = float(main_status.get('start_time', 0))
nic_fields = getNicInfo(machine_info, machine)
nic_point = display_fields.index('NIC_INFO')
- display_fields = display_fields[:nic_point] + nic_fields + display_fields[nic_point+1:]
+ display_fields = (display_fields[:nic_point] + nic_fields +
+ display_fields[nic_point+1:])
disk_fields = getDiskInfo(machine_info, machine)
disk_point = display_fields.index('DISK_INFO')
- display_fields = display_fields[:disk_point] + disk_fields + display_fields[disk_point+1:]
+ display_fields = (display_fields[:disk_point] + disk_fields +
+ display_fields[disk_point+1:])
main_status['memory'] += ' MB'
for field, disp in display_fields:
#fields.append((disp, None))
max_mem = maxMemory(user, machine)
max_disk = maxDisk(user, machine)
+ defaults=Defaults()
+ for name in 'machine_id name administrator owner memory contact'.split():
+ setattr(defaults, name, getattr(machine, name))
+ if machine.nics:
+ defaults.hostname = machine.nics[0].hostname
+ defaults.disk = "%0.2f" % (machine.disks[0].size/1024.)
d = dict(user=user,
cdroms=CDROM.select(),
on=status is not None,
machine=machine,
+ defaults=defaults,
has_vnc=has_vnc,
uptime=str(uptime),
ram=machine.memory,
max_disk=max_disk,
owner_help=helppopup("owner"),
fields = fields)
- return Template(file='info.tmpl',
- searchList=[d, global_dict])
+ return d
+
+def info(user, fields):
+ """Handler for info on a single VM."""
+ machine = testMachineId(user, fields.getfirst('machine_id'))
+ d = infoDict(user, machine)
+ return Template(file='info.tmpl', searchList=[d])
mapping = dict(list=listVms,
vnc=vnc,
modify=modify,
info=info,
create=create,
- help=help)
+ help=helpHandler)
+
+def printHeaders(headers):
+ for key, value in headers.iteritems():
+ print '%s: %s' % (key, value)
+ print
+
+
+def getUser():
+ """Return the current user based on the SSL environment variables"""
+ if 'SSL_CLIENT_S_DN_Email' in os.environ:
+ username = os.environ['SSL_CLIENT_S_DN_Email'].split("@")[0]
+ return User(username, os.environ['SSL_CLIENT_S_DN_Email'])
+ else:
+ return User('moo', 'nobody')
if __name__ == '__main__':
start_time = time.time()
fields = cgi.FieldStorage()
- class User:
- username = "moo"
- email = 'moo@cow.com'
- u = User()
+ u = getUser()
g = Global(u)
- if 'SSL_CLIENT_S_DN_Email' in os.environ:
- username = os.environ[ 'SSL_CLIENT_S_DN_Email'].split("@")[0]
- u.username = username
- u.email = os.environ[ 'SSL_CLIENT_S_DN_Email']
- else:
- u.username = 'moo'
- u.email = 'nobody'
- connect('postgres://sipb-xen@sipb-xen-dev/sipb_xen')
operation = os.environ.get('PATH_INFO', '')
if not operation:
print "Status: 301 Moved Permanently"
if not operation:
operation = 'list'
- def badOperation(u, e):
- raise CodeError("Unknown operation")
+
fun = mapping.get(operation, badOperation)
- if fun not in (help, ):
- connect('postgres://sipb-xen@sipb-xen-dev/sipb_xen')
+
+ if fun not in (helpHandler, ):
+ connect('postgres://sipb-xen@sipb-xen-dev.mit.edu/sipb_xen')
try:
output = fun(u, fields)
- print 'Content-Type: text/html\n'
- sys.stderr=sys.stdout
- errio.seek(0)
- e = errio.read()
+
+ headers = dict(default_headers)
+ if isinstance(output, tuple):
+ new_headers, output = output
+ headers.update(new_headers)
+
+ e = revertStandardError()
if e:
- output = str(output)
- output = output.replace('<body>', '<body><p>STDERR:</p><pre>'+e+'</pre>')
+ output.addError(e)
+ printHeaders(headers)
print output
- except CodeError, err:
- print 'Content-Type: text/html\n'
- sys.stderr=sys.stdout
- errio.seek(0)
- e = errio.read()
- print error(operation, u, fields, err, e)
- except InvalidInput, err:
- print 'Content-Type: text/html\n'
- sys.stderr=sys.stdout
- errio.seek(0)
- e = errio.read()
- print invalidInput(operation, u, fields, err, e)
- except:
+ except Exception, err:
+ if not fields.has_key('js'):
+ if isinstance(err, CodeError):
+ print 'Content-Type: text/html\n'
+ e = revertStandardError()
+ print error(operation, u, fields, err, e)
+ sys.exit(1)
+ if isinstance(err, InvalidInput):
+ print 'Content-Type: text/html\n'
+ e = revertStandardError()
+ print invalidInput(operation, u, fields, err, e)
+ sys.exit(1)
print 'Content-Type: text/plain\n'
- sys.stderr=sys.stdout
- errio.seek(0)
- e = errio.read()
+ print 'Uh-oh! We experienced an error.'
+ print 'Please email sipb-xen@mit.edu with the contents of this page.'
+ print '----'
+ e = revertStandardError()
print e
print '----'
raise
--- /dev/null
+/* Prototype JavaScript framework, version 1.5.1.1
+ * (c) 2005-2007 Sam Stephenson
+ *
+ * Prototype is freely distributable under the terms of an MIT-style license.
+ * For details, see the Prototype web site: http://www.prototypejs.org/
+ *
+/*--------------------------------------------------------------------------*/
+
+var Prototype = {
+ Version: '1.5.1.1',
+
+ Browser: {
+ IE: !!(window.attachEvent && !window.opera),
+ Opera: !!window.opera,
+ WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
+ Gecko: navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1
+ },
+
+ BrowserFeatures: {
+ XPath: !!document.evaluate,
+ ElementExtensions: !!window.HTMLElement,
+ SpecificElementExtensions:
+ (document.createElement('div').__proto__ !==
+ document.createElement('form').__proto__)
+ },
+
+ ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
+ JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,
+
+ emptyFunction: function() { },
+ K: function(x) { return x }
+}
+
+var Class = {
+ create: function() {
+ return function() {
+ this.initialize.apply(this, arguments);
+ }
+ }
+}
+
+var Abstract = new Object();
+
+Object.extend = function(destination, source) {
+ for (var property in source) {
+ destination[property] = source[property];
+ }
+ return destination;
+}
+
+Object.extend(Object, {
+ inspect: function(object) {
+ try {
+ if (object === undefined) return 'undefined';
+ if (object === null) return 'null';
+ return object.inspect ? object.inspect() : object.toString();
+ } catch (e) {
+ if (e instanceof RangeError) return '...';
+ throw e;
+ }
+ },
+
+ toJSON: function(object) {
+ var type = typeof object;
+ switch(type) {
+ case 'undefined':
+ case 'function':
+ case 'unknown': return;
+ case 'boolean': return object.toString();
+ }
+ if (object === null) return 'null';
+ if (object.toJSON) return object.toJSON();
+ if (object.ownerDocument === document) return;
+ var results = [];
+ for (var property in object) {
+ var value = Object.toJSON(object[property]);
+ if (value !== undefined)
+ results.push(property.toJSON() + ': ' + value);
+ }
+ return '{' + results.join(', ') + '}';
+ },
+
+ keys: function(object) {
+ var keys = [];
+ for (var property in object)
+ keys.push(property);
+ return keys;
+ },
+
+ values: function(object) {
+ var values = [];
+ for (var property in object)
+ values.push(object[property]);
+ return values;
+ },
+
+ clone: function(object) {
+ return Object.extend({}, object);
+ }
+});
+
+Function.prototype.bind = function() {
+ var __method = this, args = $A(arguments), object = args.shift();
+ return function() {
+ return __method.apply(object, args.concat($A(arguments)));
+ }
+}
+
+Function.prototype.bindAsEventListener = function(object) {
+ var __method = this, args = $A(arguments), object = args.shift();
+ return function(event) {
+ return __method.apply(object, [event || window.event].concat(args));
+ }
+}
+
+Object.extend(Number.prototype, {
+ toColorPart: function() {
+ return this.toPaddedString(2, 16);
+ },
+
+ succ: function() {
+ return this + 1;
+ },
+
+ times: function(iterator) {
+ $R(0, this, true).each(iterator);
+ return this;
+ },
+
+ toPaddedString: function(length, radix) {
+ var string = this.toString(radix || 10);
+ return '0'.times(length - string.length) + string;
+ },
+
+ toJSON: function() {
+ return isFinite(this) ? this.toString() : 'null';
+ }
+});
+
+Date.prototype.toJSON = function() {
+ return '"' + this.getFullYear() + '-' +
+ (this.getMonth() + 1).toPaddedString(2) + '-' +
+ this.getDate().toPaddedString(2) + 'T' +
+ this.getHours().toPaddedString(2) + ':' +
+ this.getMinutes().toPaddedString(2) + ':' +
+ this.getSeconds().toPaddedString(2) + '"';
+};
+
+var Try = {
+ these: function() {
+ var returnValue;
+
+ for (var i = 0, length = arguments.length; i < length; i++) {
+ var lambda = arguments[i];
+ try {
+ returnValue = lambda();
+ break;
+ } catch (e) {}
+ }
+
+ return returnValue;
+ }
+}
+
+/*--------------------------------------------------------------------------*/
+
+var PeriodicalExecuter = Class.create();
+PeriodicalExecuter.prototype = {
+ initialize: function(callback, frequency) {
+ this.callback = callback;
+ this.frequency = frequency;
+ this.currentlyExecuting = false;
+
+ this.registerCallback();
+ },
+
+ registerCallback: function() {
+ this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
+ },
+
+ stop: function() {
+ if (!this.timer) return;
+ clearInterval(this.timer);
+ this.timer = null;
+ },
+
+ onTimerEvent: function() {
+ if (!this.currentlyExecuting) {
+ try {
+ this.currentlyExecuting = true;
+ this.callback(this);
+ } finally {
+ this.currentlyExecuting = false;
+ }
+ }
+ }
+}
+Object.extend(String, {
+ interpret: function(value) {
+ return value == null ? '' : String(value);
+ },
+ specialChar: {
+ '\b': '\\b',
+ '\t': '\\t',
+ '\n': '\\n',
+ '\f': '\\f',
+ '\r': '\\r',
+ '\\': '\\\\'
+ }
+});
+
+Object.extend(String.prototype, {
+ gsub: function(pattern, replacement) {
+ var result = '', source = this, match;
+ replacement = arguments.callee.prepareReplacement(replacement);
+
+ while (source.length > 0) {
+ if (match = source.match(pattern)) {
+ result += source.slice(0, match.index);
+ result += String.interpret(replacement(match));
+ source = source.slice(match.index + match[0].length);
+ } else {
+ result += source, source = '';
+ }
+ }
+ return result;
+ },
+
+ sub: function(pattern, replacement, count) {
+ replacement = this.gsub.prepareReplacement(replacement);
+ count = count === undefined ? 1 : count;
+
+ return this.gsub(pattern, function(match) {
+ if (--count < 0) return match[0];
+ return replacement(match);
+ });
+ },
+
+ scan: function(pattern, iterator) {
+ this.gsub(pattern, iterator);
+ return this;
+ },
+
+ truncate: function(length, truncation) {
+ length = length || 30;
+ truncation = truncation === undefined ? '...' : truncation;
+ return this.length > length ?
+ this.slice(0, length - truncation.length) + truncation : this;
+ },
+
+ strip: function() {
+ return this.replace(/^\s+/, '').replace(/\s+$/, '');
+ },
+
+ stripTags: function() {
+ return this.replace(/<\/?[^>]+>/gi, '');
+ },
+
+ stripScripts: function() {
+ return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
+ },
+
+ extractScripts: function() {
+ var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
+ var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
+ return (this.match(matchAll) || []).map(function(scriptTag) {
+ return (scriptTag.match(matchOne) || ['', ''])[1];
+ });
+ },
+
+ evalScripts: function() {
+ return this.extractScripts().map(function(script) { return eval(script) });
+ },
+
+ escapeHTML: function() {
+ var self = arguments.callee;
+ self.text.data = this;
+ return self.div.innerHTML;
+ },
+
+ unescapeHTML: function() {
+ var div = document.createElement('div');
+ div.innerHTML = this.stripTags();
+ return div.childNodes[0] ? (div.childNodes.length > 1 ?
+ $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
+ div.childNodes[0].nodeValue) : '';
+ },
+
+ toQueryParams: function(separator) {
+ var match = this.strip().match(/([^?#]*)(#.*)?$/);
+ if (!match) return {};
+
+ return match[1].split(separator || '&').inject({}, function(hash, pair) {
+ if ((pair = pair.split('='))[0]) {
+ var key = decodeURIComponent(pair.shift());
+ var value = pair.length > 1 ? pair.join('=') : pair[0];
+ if (value != undefined) value = decodeURIComponent(value);
+
+ if (key in hash) {
+ if (hash[key].constructor != Array) hash[key] = [hash[key]];
+ hash[key].push(value);
+ }
+ else hash[key] = value;
+ }
+ return hash;
+ });
+ },
+
+ toArray: function() {
+ return this.split('');
+ },
+
+ succ: function() {
+ return this.slice(0, this.length - 1) +
+ String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
+ },
+
+ times: function(count) {
+ var result = '';
+ for (var i = 0; i < count; i++) result += this;
+ return result;
+ },
+
+ camelize: function() {
+ var parts = this.split('-'), len = parts.length;
+ if (len == 1) return parts[0];
+
+ var camelized = this.charAt(0) == '-'
+ ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
+ : parts[0];
+
+ for (var i = 1; i < len; i++)
+ camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);
+
+ return camelized;
+ },
+
+ capitalize: function() {
+ return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
+ },
+
+ underscore: function() {
+ return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
+ },
+
+ dasherize: function() {
+ return this.gsub(/_/,'-');
+ },
+
+ inspect: function(useDoubleQuotes) {
+ var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
+ var character = String.specialChar[match[0]];
+ return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
+ });
+ if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
+ return "'" + escapedString.replace(/'/g, '\\\'') + "'";
+ },
+
+ toJSON: function() {
+ return this.inspect(true);
+ },
+
+ unfilterJSON: function(filter) {
+ return this.sub(filter || Prototype.JSONFilter, '#{1}');
+ },
+
+ isJSON: function() {
+ var str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
+ return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
+ },
+
+ evalJSON: function(sanitize) {
+ var json = this.unfilterJSON();
+ try {
+ if (!sanitize || json.isJSON()) return eval('(' + json + ')');
+ } catch (e) { }
+ throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
+ },
+
+ include: function(pattern) {
+ return this.indexOf(pattern) > -1;
+ },
+
+ startsWith: function(pattern) {
+ return this.indexOf(pattern) === 0;
+ },
+
+ endsWith: function(pattern) {
+ var d = this.length - pattern.length;
+ return d >= 0 && this.lastIndexOf(pattern) === d;
+ },
+
+ empty: function() {
+ return this == '';
+ },
+
+ blank: function() {
+ return /^\s*$/.test(this);
+ }
+});
+
+if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
+ escapeHTML: function() {
+ return this.replace(/&/g,'&').replace(/</g,'<').replace(/>/g,'>');
+ },
+ unescapeHTML: function() {
+ return this.replace(/&/g,'&').replace(/</g,'<').replace(/>/g,'>');
+ }
+});
+
+String.prototype.gsub.prepareReplacement = function(replacement) {
+ if (typeof replacement == 'function') return replacement;
+ var template = new Template(replacement);
+ return function(match) { return template.evaluate(match) };
+}
+
+String.prototype.parseQuery = String.prototype.toQueryParams;
+
+Object.extend(String.prototype.escapeHTML, {
+ div: document.createElement('div'),
+ text: document.createTextNode('')
+});
+
+with (String.prototype.escapeHTML) div.appendChild(text);
+
+var Template = Class.create();
+Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;
+Template.prototype = {
+ initialize: function(template, pattern) {
+ this.template = template.toString();
+ this.pattern = pattern || Template.Pattern;
+ },
+
+ evaluate: function(object) {
+ return this.template.gsub(this.pattern, function(match) {
+ var before = match[1];
+ if (before == '\\') return match[2];
+ return before + String.interpret(object[match[3]]);
+ });
+ }
+}
+
+var $break = {}, $continue = new Error('"throw $continue" is deprecated, use "return" instead');
+
+var Enumerable = {
+ each: function(iterator) {
+ var index = 0;
+ try {
+ this._each(function(value) {
+ iterator(value, index++);
+ });
+ } catch (e) {
+ if (e != $break) throw e;
+ }
+ return this;
+ },
+
+ eachSlice: function(number, iterator) {
+ var index = -number, slices = [], array = this.toArray();
+ while ((index += number) < array.length)
+ slices.push(array.slice(index, index+number));
+ return slices.map(iterator);
+ },
+
+ all: function(iterator) {
+ var result = true;
+ this.each(function(value, index) {
+ result = result && !!(iterator || Prototype.K)(value, index);
+ if (!result) throw $break;
+ });
+ return result;
+ },
+
+ any: function(iterator) {
+ var result = false;
+ this.each(function(value, index) {
+ if (result = !!(iterator || Prototype.K)(value, index))
+ throw $break;
+ });
+ return result;
+ },
+
+ collect: function(iterator) {
+ var results = [];
+ this.each(function(value, index) {
+ results.push((iterator || Prototype.K)(value, index));
+ });
+ return results;
+ },
+
+ detect: function(iterator) {
+ var result;
+ this.each(function(value, index) {
+ if (iterator(value, index)) {
+ result = value;
+ throw $break;
+ }
+ });
+ return result;
+ },
+
+ findAll: function(iterator) {
+ var results = [];
+ this.each(function(value, index) {
+ if (iterator(value, index))
+ results.push(value);
+ });
+ return results;
+ },
+
+ grep: function(pattern, iterator) {
+ var results = [];
+ this.each(function(value, index) {
+ var stringValue = value.toString();
+ if (stringValue.match(pattern))
+ results.push((iterator || Prototype.K)(value, index));
+ })
+ return results;
+ },
+
+ include: function(object) {
+ var found = false;
+ this.each(function(value) {
+ if (value == object) {
+ found = true;
+ throw $break;
+ }
+ });
+ return found;
+ },
+
+ inGroupsOf: function(number, fillWith) {
+ fillWith = fillWith === undefined ? null : fillWith;
+ return this.eachSlice(number, function(slice) {
+ while(slice.length < number) slice.push(fillWith);
+ return slice;
+ });
+ },
+
+ inject: function(memo, iterator) {
+ this.each(function(value, index) {
+ memo = iterator(memo, value, index);
+ });
+ return memo;
+ },
+
+ invoke: function(method) {
+ var args = $A(arguments).slice(1);
+ return this.map(function(value) {
+ return value[method].apply(value, args);
+ });
+ },
+
+ max: function(iterator) {
+ var result;
+ this.each(function(value, index) {
+ value = (iterator || Prototype.K)(value, index);
+ if (result == undefined || value >= result)
+ result = value;
+ });
+ return result;
+ },
+
+ min: function(iterator) {
+ var result;
+ this.each(function(value, index) {
+ value = (iterator || Prototype.K)(value, index);
+ if (result == undefined || value < result)
+ result = value;
+ });
+ return result;
+ },
+
+ partition: function(iterator) {
+ var trues = [], falses = [];
+ this.each(function(value, index) {
+ ((iterator || Prototype.K)(value, index) ?
+ trues : falses).push(value);
+ });
+ return [trues, falses];
+ },
+
+ pluck: function(property) {
+ var results = [];
+ this.each(function(value, index) {
+ results.push(value[property]);
+ });
+ return results;
+ },
+
+ reject: function(iterator) {
+ var results = [];
+ this.each(function(value, index) {
+ if (!iterator(value, index))
+ results.push(value);
+ });
+ return results;
+ },
+
+ sortBy: function(iterator) {
+ return this.map(function(value, index) {
+ return {value: value, criteria: iterator(value, index)};
+ }).sort(function(left, right) {
+ var a = left.criteria, b = right.criteria;
+ return a < b ? -1 : a > b ? 1 : 0;
+ }).pluck('value');
+ },
+
+ toArray: function() {
+ return this.map();
+ },
+
+ zip: function() {
+ var iterator = Prototype.K, args = $A(arguments);
+ if (typeof args.last() == 'function')
+ iterator = args.pop();
+
+ var collections = [this].concat(args).map($A);
+ return this.map(function(value, index) {
+ return iterator(collections.pluck(index));
+ });
+ },
+
+ size: function() {
+ return this.toArray().length;
+ },
+
+ inspect: function() {
+ return '#<Enumerable:' + this.toArray().inspect() + '>';
+ }
+}
+
+Object.extend(Enumerable, {
+ map: Enumerable.collect,
+ find: Enumerable.detect,
+ select: Enumerable.findAll,
+ member: Enumerable.include,
+ entries: Enumerable.toArray
+});
+var $A = Array.from = function(iterable) {
+ if (!iterable) return [];
+ if (iterable.toArray) {
+ return iterable.toArray();
+ } else {
+ var results = [];
+ for (var i = 0, length = iterable.length; i < length; i++)
+ results.push(iterable[i]);
+ return results;
+ }
+}
+
+if (Prototype.Browser.WebKit) {
+ $A = Array.from = function(iterable) {
+ if (!iterable) return [];
+ if (!(typeof iterable == 'function' && iterable == '[object NodeList]') &&
+ iterable.toArray) {
+ return iterable.toArray();
+ } else {
+ var results = [];
+ for (var i = 0, length = iterable.length; i < length; i++)
+ results.push(iterable[i]);
+ return results;
+ }
+ }
+}
+
+Object.extend(Array.prototype, Enumerable);
+
+if (!Array.prototype._reverse)
+ Array.prototype._reverse = Array.prototype.reverse;
+
+Object.extend(Array.prototype, {
+ _each: function(iterator) {
+ for (var i = 0, length = this.length; i < length; i++)
+ iterator(this[i]);
+ },
+
+ clear: function() {
+ this.length = 0;
+ return this;
+ },
+
+ first: function() {
+ return this[0];
+ },
+
+ last: function() {
+ return this[this.length - 1];
+ },
+
+ compact: function() {
+ return this.select(function(value) {
+ return value != null;
+ });
+ },
+
+ flatten: function() {
+ return this.inject([], function(array, value) {
+ return array.concat(value && value.constructor == Array ?
+ value.flatten() : [value]);
+ });
+ },
+
+ without: function() {
+ var values = $A(arguments);
+ return this.select(function(value) {
+ return !values.include(value);
+ });
+ },
+
+ indexOf: function(object) {
+ for (var i = 0, length = this.length; i < length; i++)
+ if (this[i] == object) return i;
+ return -1;
+ },
+
+ reverse: function(inline) {
+ return (inline !== false ? this : this.toArray())._reverse();
+ },
+
+ reduce: function() {
+ return this.length > 1 ? this : this[0];
+ },
+
+ uniq: function(sorted) {
+ return this.inject([], function(array, value, index) {
+ if (0 == index || (sorted ? array.last() != value : !array.include(value)))
+ array.push(value);
+ return array;
+ });
+ },
+
+ clone: function() {
+ return [].concat(this);
+ },
+
+ size: function() {
+ return this.length;
+ },
+
+ inspect: function() {
+ return '[' + this.map(Object.inspect).join(', ') + ']';
+ },
+
+ toJSON: function() {
+ var results = [];
+ this.each(function(object) {
+ var value = Object.toJSON(object);
+ if (value !== undefined) results.push(value);
+ });
+ return '[' + results.join(', ') + ']';
+ }
+});
+
+Array.prototype.toArray = Array.prototype.clone;
+
+function $w(string) {
+ string = string.strip();
+ return string ? string.split(/\s+/) : [];
+}
+
+if (Prototype.Browser.Opera){
+ Array.prototype.concat = function() {
+ var array = [];
+ for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
+ for (var i = 0, length = arguments.length; i < length; i++) {
+ if (arguments[i].constructor == Array) {
+ for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
+ array.push(arguments[i][j]);
+ } else {
+ array.push(arguments[i]);
+ }
+ }
+ return array;
+ }
+}
+var Hash = function(object) {
+ if (object instanceof Hash) this.merge(object);
+ else Object.extend(this, object || {});
+};
+
+Object.extend(Hash, {
+ toQueryString: function(obj) {
+ var parts = [];
+ parts.add = arguments.callee.addPair;
+
+ this.prototype._each.call(obj, function(pair) {
+ if (!pair.key) return;
+ var value = pair.value;
+
+ if (value && typeof value == 'object') {
+ if (value.constructor == Array) value.each(function(value) {
+ parts.add(pair.key, value);
+ });
+ return;
+ }
+ parts.add(pair.key, value);
+ });
+
+ return parts.join('&');
+ },
+
+ toJSON: function(object) {
+ var results = [];
+ this.prototype._each.call(object, function(pair) {
+ var value = Object.toJSON(pair.value);
+ if (value !== undefined) results.push(pair.key.toJSON() + ': ' + value);
+ });
+ return '{' + results.join(', ') + '}';
+ }
+});
+
+Hash.toQueryString.addPair = function(key, value, prefix) {
+ key = encodeURIComponent(key);
+ if (value === undefined) this.push(key);
+ else this.push(key + '=' + (value == null ? '' : encodeURIComponent(value)));
+}
+
+Object.extend(Hash.prototype, Enumerable);
+Object.extend(Hash.prototype, {
+ _each: function(iterator) {
+ for (var key in this) {
+ var value = this[key];
+ if (value && value == Hash.prototype[key]) continue;
+
+ var pair = [key, value];
+ pair.key = key;
+ pair.value = value;
+ iterator(pair);
+ }
+ },
+
+ keys: function() {
+ return this.pluck('key');
+ },
+
+ values: function() {
+ return this.pluck('value');
+ },
+
+ merge: function(hash) {
+ return $H(hash).inject(this, function(mergedHash, pair) {
+ mergedHash[pair.key] = pair.value;
+ return mergedHash;
+ });
+ },
+
+ remove: function() {
+ var result;
+ for(var i = 0, length = arguments.length; i < length; i++) {
+ var value = this[arguments[i]];
+ if (value !== undefined){
+ if (result === undefined) result = value;
+ else {
+ if (result.constructor != Array) result = [result];
+ result.push(value)
+ }
+ }
+ delete this[arguments[i]];
+ }
+ return result;
+ },
+
+ toQueryString: function() {
+ return Hash.toQueryString(this);
+ },
+
+ inspect: function() {
+ return '#<Hash:{' + this.map(function(pair) {
+ return pair.map(Object.inspect).join(': ');
+ }).join(', ') + '}>';
+ },
+
+ toJSON: function() {
+ return Hash.toJSON(this);
+ }
+});
+
+function $H(object) {
+ if (object instanceof Hash) return object;
+ return new Hash(object);
+};
+
+// Safari iterates over shadowed properties
+if (function() {
+ var i = 0, Test = function(value) { this.key = value };
+ Test.prototype.key = 'foo';
+ for (var property in new Test('bar')) i++;
+ return i > 1;
+}()) Hash.prototype._each = function(iterator) {
+ var cache = [];
+ for (var key in this) {
+ var value = this[key];
+ if ((value && value == Hash.prototype[key]) || cache.include(key)) continue;
+ cache.push(key);
+ var pair = [key, value];
+ pair.key = key;
+ pair.value = value;
+ iterator(pair);
+ }
+};
+ObjectRange = Class.create();
+Object.extend(ObjectRange.prototype, Enumerable);
+Object.extend(ObjectRange.prototype, {
+ initialize: function(start, end, exclusive) {
+ this.start = start;
+ this.end = end;
+ this.exclusive = exclusive;
+ },
+
+ _each: function(iterator) {
+ var value = this.start;
+ while (this.include(value)) {
+ iterator(value);
+ value = value.succ();
+ }
+ },
+
+ include: function(value) {
+ if (value < this.start)
+ return false;
+ if (this.exclusive)
+ return value < this.end;
+ return value <= this.end;
+ }
+});
+
+var $R = function(start, end, exclusive) {
+ return new ObjectRange(start, end, exclusive);
+}
+
+var Ajax = {
+ getTransport: function() {
+ return Try.these(
+ function() {return new XMLHttpRequest()},
+ function() {return new ActiveXObject('Msxml2.XMLHTTP')},
+ function() {return new ActiveXObject('Microsoft.XMLHTTP')}
+ ) || false;
+ },
+
+ activeRequestCount: 0
+}
+
+Ajax.Responders = {
+ responders: [],
+
+ _each: function(iterator) {
+ this.responders._each(iterator);
+ },
+
+ register: function(responder) {
+ if (!this.include(responder))
+ this.responders.push(responder);
+ },
+
+ unregister: function(responder) {
+ this.responders = this.responders.without(responder);
+ },
+
+ dispatch: function(callback, request, transport, json) {
+ this.each(function(responder) {
+ if (typeof responder[callback] == 'function') {
+ try {
+ responder[callback].apply(responder, [request, transport, json]);
+ } catch (e) {}
+ }
+ });
+ }
+};
+
+Object.extend(Ajax.Responders, Enumerable);
+
+Ajax.Responders.register({
+ onCreate: function() {
+ Ajax.activeRequestCount++;
+ },
+ onComplete: function() {
+ Ajax.activeRequestCount--;
+ }
+});
+
+Ajax.Base = function() {};
+Ajax.Base.prototype = {
+ setOptions: function(options) {
+ this.options = {
+ method: 'post',
+ asynchronous: true,
+ contentType: 'application/x-www-form-urlencoded',
+ encoding: 'UTF-8',
+ parameters: ''
+ }
+ Object.extend(this.options, options || {});
+
+ this.options.method = this.options.method.toLowerCase();
+ if (typeof this.options.parameters == 'string')
+ this.options.parameters = this.options.parameters.toQueryParams();
+ }
+}
+
+Ajax.Request = Class.create();
+Ajax.Request.Events =
+ ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];
+
+Ajax.Request.prototype = Object.extend(new Ajax.Base(), {
+ _complete: false,
+
+ initialize: function(url, options) {
+ this.transport = Ajax.getTransport();
+ this.setOptions(options);
+ this.request(url);
+ },
+
+ request: function(url) {
+ this.url = url;
+ this.method = this.options.method;
+ var params = Object.clone(this.options.parameters);
+
+ if (!['get', 'post'].include(this.method)) {
+ // simulate other verbs over post
+ params['_method'] = this.method;
+ this.method = 'post';
+ }
+
+ this.parameters = params;
+
+ if (params = Hash.toQueryString(params)) {
+ // when GET, append parameters to URL
+ if (this.method == 'get')
+ this.url += (this.url.include('?') ? '&' : '?') + params;
+ else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
+ params += '&_=';
+ }
+
+ try {
+ if (this.options.onCreate) this.options.onCreate(this.transport);
+ Ajax.Responders.dispatch('onCreate', this, this.transport);
+
+ this.transport.open(this.method.toUpperCase(), this.url,
+ this.options.asynchronous);
+
+ if (this.options.asynchronous)
+ setTimeout(function() { this.respondToReadyState(1) }.bind(this), 10);
+
+ this.transport.onreadystatechange = this.onStateChange.bind(this);
+ this.setRequestHeaders();
+
+ this.body = this.method == 'post' ? (this.options.postBody || params) : null;
+ this.transport.send(this.body);
+
+ /* Force Firefox to handle ready state 4 for synchronous requests */
+ if (!this.options.asynchronous && this.transport.overrideMimeType)
+ this.onStateChange();
+
+ }
+ catch (e) {
+ this.dispatchException(e);
+ }
+ },
+
+ onStateChange: function() {
+ var readyState = this.transport.readyState;
+ if (readyState > 1 && !((readyState == 4) && this._complete))
+ this.respondToReadyState(this.transport.readyState);
+ },
+
+ setRequestHeaders: function() {
+ var headers = {
+ 'X-Requested-With': 'XMLHttpRequest',
+ 'X-Prototype-Version': Prototype.Version,
+ 'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
+ };
+
+ if (this.method == 'post') {
+ headers['Content-type'] = this.options.contentType +
+ (this.options.encoding ? '; charset=' + this.options.encoding : '');
+
+ /* Force "Connection: close" for older Mozilla browsers to work
+ * around a bug where XMLHttpRequest sends an incorrect
+ * Content-length header. See Mozilla Bugzilla #246651.
+ */
+ if (this.transport.overrideMimeType &&
+ (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
+ headers['Connection'] = 'close';
+ }
+
+ // user-defined headers
+ if (typeof this.options.requestHeaders == 'object') {
+ var extras = this.options.requestHeaders;
+
+ if (typeof extras.push == 'function')
+ for (var i = 0, length = extras.length; i < length; i += 2)
+ headers[extras[i]] = extras[i+1];
+ else
+ $H(extras).each(function(pair) { headers[pair.key] = pair.value });
+ }
+
+ for (var name in headers)
+ this.transport.setRequestHeader(name, headers[name]);
+ },
+
+ success: function() {
+ return !this.transport.status
+ || (this.transport.status >= 200 && this.transport.status < 300);
+ },
+
+ respondToReadyState: function(readyState) {
+ var state = Ajax.Request.Events[readyState];
+ var transport = this.transport, json = this.evalJSON();
+
+ if (state == 'Complete') {
+ try {
+ this._complete = true;
+ (this.options['on' + this.transport.status]
+ || this.options['on' + (this.success() ? 'Success' : 'Failure')]
+ || Prototype.emptyFunction)(transport, json);
+ } catch (e) {
+ this.dispatchException(e);
+ }
+
+ var contentType = this.getHeader('Content-type');
+ if (contentType && contentType.strip().
+ match(/^(text|application)\/(x-)?(java|ecma)script(;.*)?$/i))
+ this.evalResponse();
+ }
+
+ try {
+ (this.options['on' + state] || Prototype.emptyFunction)(transport, json);
+ Ajax.Responders.dispatch('on' + state, this, transport, json);
+ } catch (e) {
+ this.dispatchException(e);
+ }
+
+ if (state == 'Complete') {
+ // avoid memory leak in MSIE: clean up
+ this.transport.onreadystatechange = Prototype.emptyFunction;
+ }
+ },
+
+ getHeader: function(name) {
+ try {
+ return this.transport.getResponseHeader(name);
+ } catch (e) { return null }
+ },
+
+ evalJSON: function() {
+ try {
+ var json = this.getHeader('X-JSON');
+ return json ? json.evalJSON() : null;
+ } catch (e) { return null }
+ },
+
+ evalResponse: function() {
+ try {
+ return eval((this.transport.responseText || '').unfilterJSON());
+ } catch (e) {
+ this.dispatchException(e);
+ }
+ },
+
+ dispatchException: function(exception) {
+ (this.options.onException || Prototype.emptyFunction)(this, exception);
+ Ajax.Responders.dispatch('onException', this, exception);
+ }
+});
+
+Ajax.Updater = Class.create();
+
+Object.extend(Object.extend(Ajax.Updater.prototype, Ajax.Request.prototype), {
+ initialize: function(container, url, options) {
+ this.container = {
+ success: (container.success || container),
+ failure: (container.failure || (container.success ? null : container))
+ }
+
+ this.transport = Ajax.getTransport();
+ this.setOptions(options);
+
+ var onComplete = this.options.onComplete || Prototype.emptyFunction;
+ this.options.onComplete = (function(transport, param) {
+ this.updateContent();
+ onComplete(transport, param);
+ }).bind(this);
+
+ this.request(url);
+ },
+
+ updateContent: function() {
+ var receiver = this.container[this.success() ? 'success' : 'failure'];
+ var response = this.transport.responseText;
+
+ if (!this.options.evalScripts) response = response.stripScripts();
+
+ if (receiver = $(receiver)) {
+ if (this.options.insertion)
+ new this.options.insertion(receiver, response);
+ else
+ receiver.update(response);
+ }
+
+ if (this.success()) {
+ if (this.onComplete)
+ setTimeout(this.onComplete.bind(this), 10);
+ }
+ }
+});
+
+Ajax.PeriodicalUpdater = Class.create();
+Ajax.PeriodicalUpdater.prototype = Object.extend(new Ajax.Base(), {
+ initialize: function(container, url, options) {
+ this.setOptions(options);
+ this.onComplete = this.options.onComplete;
+
+ this.frequency = (this.options.frequency || 2);
+ this.decay = (this.options.decay || 1);
+
+ this.updater = {};
+ this.container = container;
+ this.url = url;
+
+ this.start();
+ },
+
+ start: function() {
+ this.options.onComplete = this.updateComplete.bind(this);
+ this.onTimerEvent();
+ },
+
+ stop: function() {
+ this.updater.options.onComplete = undefined;
+ clearTimeout(this.timer);
+ (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
+ },
+
+ updateComplete: function(request) {
+ if (this.options.decay) {
+ this.decay = (request.responseText == this.lastText ?
+ this.decay * this.options.decay : 1);
+
+ this.lastText = request.responseText;
+ }
+ this.timer = setTimeout(this.onTimerEvent.bind(this),
+ this.decay * this.frequency * 1000);
+ },
+
+ onTimerEvent: function() {
+ this.updater = new Ajax.Updater(this.container, this.url, this.options);
+ }
+});
+function $(element) {
+ if (arguments.length > 1) {
+ for (var i = 0, elements = [], length = arguments.length; i < length; i++)
+ elements.push($(arguments[i]));
+ return elements;
+ }
+ if (typeof element == 'string')
+ element = document.getElementById(element);
+ return Element.extend(element);
+}
+
+if (Prototype.BrowserFeatures.XPath) {
+ document._getElementsByXPath = function(expression, parentElement) {
+ var results = [];
+ var query = document.evaluate(expression, $(parentElement) || document,
+ null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
+ for (var i = 0, length = query.snapshotLength; i < length; i++)
+ results.push(query.snapshotItem(i));
+ return results;
+ };
+
+ document.getElementsByClassName = function(className, parentElement) {
+ var q = ".//*[contains(concat(' ', @class, ' '), ' " + className + " ')]";
+ return document._getElementsByXPath(q, parentElement);
+ }
+
+} else document.getElementsByClassName = function(className, parentElement) {
+ var children = ($(parentElement) || document.body).getElementsByTagName('*');
+ var elements = [], child, pattern = new RegExp("(^|\\s)" + className + "(\\s|$)");
+ for (var i = 0, length = children.length; i < length; i++) {
+ child = children[i];
+ var elementClassName = child.className;
+ if (elementClassName.length == 0) continue;
+ if (elementClassName == className || elementClassName.match(pattern))
+ elements.push(Element.extend(child));
+ }
+ return elements;
+};
+
+/*--------------------------------------------------------------------------*/
+
+if (!window.Element) var Element = {};
+
+Element.extend = function(element) {
+ var F = Prototype.BrowserFeatures;
+ if (!element || !element.tagName || element.nodeType == 3 ||
+ element._extended || F.SpecificElementExtensions || element == window)
+ return element;
+
+ var methods = {}, tagName = element.tagName, cache = Element.extend.cache,
+ T = Element.Methods.ByTag;
+
+ // extend methods for all tags (Safari doesn't need this)
+ if (!F.ElementExtensions) {
+ Object.extend(methods, Element.Methods),
+ Object.extend(methods, Element.Methods.Simulated);
+ }
+
+ // extend methods for specific tags
+ if (T[tagName]) Object.extend(methods, T[tagName]);
+
+ for (var property in methods) {
+ var value = methods[property];
+ if (typeof value == 'function' && !(property in element))
+ element[property] = cache.findOrStore(value);
+ }
+
+ element._extended = Prototype.emptyFunction;
+ return element;
+};
+
+Element.extend.cache = {
+ findOrStore: function(value) {
+ return this[value] = this[value] || function() {
+ return value.apply(null, [this].concat($A(arguments)));
+ }
+ }
+};
+
+Element.Methods = {
+ visible: function(element) {
+ return $(element).style.display != 'none';
+ },
+
+ toggle: function(element) {
+ element = $(element);
+ Element[Element.visible(element) ? 'hide' : 'show'](element);
+ return element;
+ },
+
+ hide: function(element) {
+ $(element).style.display = 'none';
+ return element;
+ },
+
+ show: function(element) {
+ $(element).style.display = '';
+ return element;
+ },
+
+ remove: function(element) {
+ element = $(element);
+ element.parentNode.removeChild(element);
+ return element;
+ },
+
+ update: function(element, html) {
+ html = typeof html == 'undefined' ? '' : html.toString();
+ $(element).innerHTML = html.stripScripts();
+ setTimeout(function() {html.evalScripts()}, 10);
+ return element;
+ },
+
+ replace: function(element, html) {
+ element = $(element);
+ html = typeof html == 'undefined' ? '' : html.toString();
+ if (element.outerHTML) {
+ element.outerHTML = html.stripScripts();
+ } else {
+ var range = element.ownerDocument.createRange();
+ range.selectNodeContents(element);
+ element.parentNode.replaceChild(
+ range.createContextualFragment(html.stripScripts()), element);
+ }
+ setTimeout(function() {html.evalScripts()}, 10);
+ return element;
+ },
+
+ inspect: function(element) {
+ element = $(element);
+ var result = '<' + element.tagName.toLowerCase();
+ $H({'id': 'id', 'className': 'class'}).each(function(pair) {
+ var property = pair.first(), attribute = pair.last();
+ var value = (element[property] || '').toString();
+ if (value) result += ' ' + attribute + '=' + value.inspect(true);
+ });
+ return result + '>';
+ },
+
+ recursivelyCollect: function(element, property) {
+ element = $(element);
+ var elements = [];
+ while (element = element[property])
+ if (element.nodeType == 1)
+ elements.push(Element.extend(element));
+ return elements;
+ },
+
+ ancestors: function(element) {
+ return $(element).recursivelyCollect('parentNode');
+ },
+
+ descendants: function(element) {
+ return $A($(element).getElementsByTagName('*')).each(Element.extend);
+ },
+
+ firstDescendant: function(element) {
+ element = $(element).firstChild;
+ while (element && element.nodeType != 1) element = element.nextSibling;
+ return $(element);
+ },
+
+ immediateDescendants: function(element) {
+ if (!(element = $(element).firstChild)) return [];
+ while (element && element.nodeType != 1) element = element.nextSibling;
+ if (element) return [element].concat($(element).nextSiblings());
+ return [];
+ },
+
+ previousSiblings: function(element) {
+ return $(element).recursivelyCollect('previousSibling');
+ },
+
+ nextSiblings: function(element) {
+ return $(element).recursivelyCollect('nextSibling');
+ },
+
+ siblings: function(element) {
+ element = $(element);
+ return element.previousSiblings().reverse().concat(element.nextSiblings());
+ },
+
+ match: function(element, selector) {
+ if (typeof selector == 'string')
+ selector = new Selector(selector);
+ return selector.match($(element));
+ },
+
+ up: function(element, expression, index) {
+ element = $(element);
+ if (arguments.length == 1) return $(element.parentNode);
+ var ancestors = element.ancestors();
+ return expression ? Selector.findElement(ancestors, expression, index) :
+ ancestors[index || 0];
+ },
+
+ down: function(element, expression, index) {
+ element = $(element);
+ if (arguments.length == 1) return element.firstDescendant();
+ var descendants = element.descendants();
+ return expression ? Selector.findElement(descendants, expression, index) :
+ descendants[index || 0];
+ },
+
+ previous: function(element, expression, index) {
+ element = $(element);
+ if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
+ var previousSiblings = element.previousSiblings();
+ return expression ? Selector.findElement(previousSiblings, expression, index) :
+ previousSiblings[index || 0];
+ },
+
+ next: function(element, expression, index) {
+ element = $(element);
+ if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
+ var nextSiblings = element.nextSiblings();
+ return expression ? Selector.findElement(nextSiblings, expression, index) :
+ nextSiblings[index || 0];
+ },
+
+ getElementsBySelector: function() {
+ var args = $A(arguments), element = $(args.shift());
+ return Selector.findChildElements(element, args);
+ },
+
+ getElementsByClassName: function(element, className) {
+ return document.getElementsByClassName(className, element);
+ },
+
+ readAttribute: function(element, name) {
+ element = $(element);
+ if (Prototype.Browser.IE) {
+ if (!element.attributes) return null;
+ var t = Element._attributeTranslations;
+ if (t.values[name]) return t.values[name](element, name);
+ if (t.names[name]) name = t.names[name];
+ var attribute = element.attributes[name];
+ return attribute ? attribute.nodeValue : null;
+ }
+ return element.getAttribute(name);
+ },
+
+ getHeight: function(element) {
+ return $(element).getDimensions().height;
+ },
+
+ getWidth: function(element) {
+ return $(element).getDimensions().width;
+ },
+
+ classNames: function(element) {
+ return new Element.ClassNames(element);
+ },
+
+ hasClassName: function(element, className) {
+ if (!(element = $(element))) return;
+ var elementClassName = element.className;
+ if (elementClassName.length == 0) return false;
+ if (elementClassName == className ||
+ elementClassName.match(new RegExp("(^|\\s)" + className + "(\\s|$)")))
+ return true;
+ return false;
+ },
+
+ addClassName: function(element, className) {
+ if (!(element = $(element))) return;
+ Element.classNames(element).add(className);
+ return element;
+ },
+
+ removeClassName: function(element, className) {
+ if (!(element = $(element))) return;
+ Element.classNames(element).remove(className);
+ return element;
+ },
+
+ toggleClassName: function(element, className) {
+ if (!(element = $(element))) return;
+ Element.classNames(element)[element.hasClassName(className) ? 'remove' : 'add'](className);
+ return element;
+ },
+
+ observe: function() {
+ Event.observe.apply(Event, arguments);
+ return $A(arguments).first();
+ },
+
+ stopObserving: function() {
+ Event.stopObserving.apply(Event, arguments);
+ return $A(arguments).first();
+ },
+
+ // removes whitespace-only text node children
+ cleanWhitespace: function(element) {
+ element = $(element);
+ var node = element.firstChild;
+ while (node) {
+ var nextNode = node.nextSibling;
+ if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
+ element.removeChild(node);
+ node = nextNode;
+ }
+ return element;
+ },
+
+ empty: function(element) {
+ return $(element).innerHTML.blank();
+ },
+
+ descendantOf: function(element, ancestor) {
+ element = $(element), ancestor = $(ancestor);
+ while (element = element.parentNode)
+ if (element == ancestor) return true;
+ return false;
+ },
+
+ scrollTo: function(element) {
+ element = $(element);
+ var pos = Position.cumulativeOffset(element);
+ window.scrollTo(pos[0], pos[1]);
+ return element;
+ },
+
+ getStyle: function(element, style) {
+ element = $(element);
+ style = style == 'float' ? 'cssFloat' : style.camelize();
+ var value = element.style[style];
+ if (!value) {
+ var css = document.defaultView.getComputedStyle(element, null);
+ value = css ? css[style] : null;
+ }
+ if (style == 'opacity') return value ? parseFloat(value) : 1.0;
+ return value == 'auto' ? null : value;
+ },
+
+ getOpacity: function(element) {
+ return $(element).getStyle('opacity');
+ },
+
+ setStyle: function(element, styles, camelized) {
+ element = $(element);
+ var elementStyle = element.style;
+
+ for (var property in styles)
+ if (property == 'opacity') element.setOpacity(styles[property])
+ else
+ elementStyle[(property == 'float' || property == 'cssFloat') ?
+ (elementStyle.styleFloat === undefined ? 'cssFloat' : 'styleFloat') :
+ (camelized ? property : property.camelize())] = styles[property];
+
+ return element;
+ },
+
+ setOpacity: function(element, value) {
+ element = $(element);
+ element.style.opacity = (value == 1 || value === '') ? '' :
+ (value < 0.00001) ? 0 : value;
+ return element;
+ },
+
+ getDimensions: function(element) {
+ element = $(element);
+ var display = $(element).getStyle('display');
+ if (display != 'none' && display != null) // Safari bug
+ return {width: element.offsetWidth, height: element.offsetHeight};
+
+ // All *Width and *Height properties give 0 on elements with display none,
+ // so enable the element temporarily
+ var els = element.style;
+ var originalVisibility = els.visibility;
+ var originalPosition = els.position;
+ var originalDisplay = els.display;
+ els.visibility = 'hidden';
+ els.position = 'absolute';
+ els.display = 'block';
+ var originalWidth = element.clientWidth;
+ var originalHeight = element.clientHeight;
+ els.display = originalDisplay;
+ els.position = originalPosition;
+ els.visibility = originalVisibility;
+ return {width: originalWidth, height: originalHeight};
+ },
+
+ makePositioned: function(element) {
+ element = $(element);
+ var pos = Element.getStyle(element, 'position');
+ if (pos == 'static' || !pos) {
+ element._madePositioned = true;
+ element.style.position = 'relative';
+ // Opera returns the offset relative to the positioning context, when an
+ // element is position relative but top and left have not been defined
+ if (window.opera) {
+ element.style.top = 0;
+ element.style.left = 0;
+ }
+ }
+ return element;
+ },
+
+ undoPositioned: function(element) {
+ element = $(element);
+ if (element._madePositioned) {
+ element._madePositioned = undefined;
+ element.style.position =
+ element.style.top =
+ element.style.left =
+ element.style.bottom =
+ element.style.right = '';
+ }
+ return element;
+ },
+
+ makeClipping: function(element) {
+ element = $(element);
+ if (element._overflow) return element;
+ element._overflow = element.style.overflow || 'auto';
+ if ((Element.getStyle(element, 'overflow') || 'visible') != 'hidden')
+ element.style.overflow = 'hidden';
+ return element;
+ },
+
+ undoClipping: function(element) {
+ element = $(element);
+ if (!element._overflow) return element;
+ element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
+ element._overflow = null;
+ return element;
+ }
+};
+
+Object.extend(Element.Methods, {
+ childOf: Element.Methods.descendantOf,
+ childElements: Element.Methods.immediateDescendants
+});
+
+if (Prototype.Browser.Opera) {
+ Element.Methods._getStyle = Element.Methods.getStyle;
+ Element.Methods.getStyle = function(element, style) {
+ switch(style) {
+ case 'left':
+ case 'top':
+ case 'right':
+ case 'bottom':
+ if (Element._getStyle(element, 'position') == 'static') return null;
+ default: return Element._getStyle(element, style);
+ }
+ };
+}
+else if (Prototype.Browser.IE) {
+ Element.Methods.getStyle = function(element, style) {
+ element = $(element);
+ style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
+ var value = element.style[style];
+ if (!value && element.currentStyle) value = element.currentStyle[style];
+
+ if (style == 'opacity') {
+ if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
+ if (value[1]) return parseFloat(value[1]) / 100;
+ return 1.0;
+ }
+
+ if (value == 'auto') {
+ if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
+ return element['offset'+style.capitalize()] + 'px';
+ return null;
+ }
+ return value;
+ };
+
+ Element.Methods.setOpacity = function(element, value) {
+ element = $(element);
+ var filter = element.getStyle('filter'), style = element.style;
+ if (value == 1 || value === '') {
+ style.filter = filter.replace(/alpha\([^\)]*\)/gi,'');
+ return element;
+ } else if (value < 0.00001) value = 0;
+ style.filter = filter.replace(/alpha\([^\)]*\)/gi, '') +
+ 'alpha(opacity=' + (value * 100) + ')';
+ return element;
+ };
+
+ // IE is missing .innerHTML support for TABLE-related elements
+ Element.Methods.update = function(element, html) {
+ element = $(element);
+ html = typeof html == 'undefined' ? '' : html.toString();
+ var tagName = element.tagName.toUpperCase();
+ if (['THEAD','TBODY','TR','TD'].include(tagName)) {
+ var div = document.createElement('div');
+ switch (tagName) {
+ case 'THEAD':
+ case 'TBODY':
+ div.innerHTML = '<table><tbody>' + html.stripScripts() + '</tbody></table>';
+ depth = 2;
+ break;
+ case 'TR':
+ div.innerHTML = '<table><tbody><tr>' + html.stripScripts() + '</tr></tbody></table>';
+ depth = 3;
+ break;
+ case 'TD':
+ div.innerHTML = '<table><tbody><tr><td>' + html.stripScripts() + '</td></tr></tbody></table>';
+ depth = 4;
+ }
+ $A(element.childNodes).each(function(node) { element.removeChild(node) });
+ depth.times(function() { div = div.firstChild });
+ $A(div.childNodes).each(function(node) { element.appendChild(node) });
+ } else {
+ element.innerHTML = html.stripScripts();
+ }
+ setTimeout(function() { html.evalScripts() }, 10);
+ return element;
+ }
+}
+else if (Prototype.Browser.Gecko) {
+ Element.Methods.setOpacity = function(element, value) {
+ element = $(element);
+ element.style.opacity = (value == 1) ? 0.999999 :
+ (value === '') ? '' : (value < 0.00001) ? 0 : value;
+ return element;
+ };
+}
+
+Element._attributeTranslations = {
+ names: {
+ colspan: "colSpan",
+ rowspan: "rowSpan",
+ valign: "vAlign",
+ datetime: "dateTime",
+ accesskey: "accessKey",
+ tabindex: "tabIndex",
+ enctype: "encType",
+ maxlength: "maxLength",
+ readonly: "readOnly",
+ longdesc: "longDesc"
+ },
+ values: {
+ _getAttr: function(element, attribute) {
+ return element.getAttribute(attribute, 2);
+ },
+ _flag: function(element, attribute) {
+ return $(element).hasAttribute(attribute) ? attribute : null;
+ },
+ style: function(element) {
+ return element.style.cssText.toLowerCase();
+ },
+ title: function(element) {
+ var node = element.getAttributeNode('title');
+ return node.specified ? node.nodeValue : null;
+ }
+ }
+};
+
+(function() {
+ Object.extend(this, {
+ href: this._getAttr,
+ src: this._getAttr,
+ type: this._getAttr,
+ disabled: this._flag,
+ checked: this._flag,
+ readonly: this._flag,
+ multiple: this._flag
+ });
+}).call(Element._attributeTranslations.values);
+
+Element.Methods.Simulated = {
+ hasAttribute: function(element, attribute) {
+ var t = Element._attributeTranslations, node;
+ attribute = t.names[attribute] || attribute;
+ node = $(element).getAttributeNode(attribute);
+ return node && node.specified;
+ }
+};
+
+Element.Methods.ByTag = {};
+
+Object.extend(Element, Element.Methods);
+
+if (!Prototype.BrowserFeatures.ElementExtensions &&
+ document.createElement('div').__proto__) {
+ window.HTMLElement = {};
+ window.HTMLElement.prototype = document.createElement('div').__proto__;
+ Prototype.BrowserFeatures.ElementExtensions = true;
+}
+
+Element.hasAttribute = function(element, attribute) {
+ if (element.hasAttribute) return element.hasAttribute(attribute);
+ return Element.Methods.Simulated.hasAttribute(element, attribute);
+};
+
+Element.addMethods = function(methods) {
+ var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;
+
+ if (!methods) {
+ Object.extend(Form, Form.Methods);
+ Object.extend(Form.Element, Form.Element.Methods);
+ Object.extend(Element.Methods.ByTag, {
+ "FORM": Object.clone(Form.Methods),
+ "INPUT": Object.clone(Form.Element.Methods),
+ "SELECT": Object.clone(Form.Element.Methods),
+ "TEXTAREA": Object.clone(Form.Element.Methods)
+ });
+ }
+
+ if (arguments.length == 2) {
+ var tagName = methods;
+ methods = arguments[1];
+ }
+
+ if (!tagName) Object.extend(Element.Methods, methods || {});
+ else {
+ if (tagName.constructor == Array) tagName.each(extend);
+ else extend(tagName);
+ }
+
+ function extend(tagName) {
+ tagName = tagName.toUpperCase();
+ if (!Element.Methods.ByTag[tagName])
+ Element.Methods.ByTag[tagName] = {};
+ Object.extend(Element.Methods.ByTag[tagName], methods);
+ }
+
+ function copy(methods, destination, onlyIfAbsent) {
+ onlyIfAbsent = onlyIfAbsent || false;
+ var cache = Element.extend.cache;
+ for (var property in methods) {
+ var value = methods[property];
+ if (!onlyIfAbsent || !(property in destination))
+ destination[property] = cache.findOrStore(value);
+ }
+ }
+
+ function findDOMClass(tagName) {
+ var klass;
+ var trans = {
+ "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
+ "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
+ "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
+ "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
+ "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
+ "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
+ "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
+ "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
+ "FrameSet", "IFRAME": "IFrame"
+ };
+ if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
+ if (window[klass]) return window[klass];
+ klass = 'HTML' + tagName + 'Element';
+ if (window[klass]) return window[klass];
+ klass = 'HTML' + tagName.capitalize() + 'Element';
+ if (window[klass]) return window[klass];
+
+ window[klass] = {};
+ window[klass].prototype = document.createElement(tagName).__proto__;
+ return window[klass];
+ }
+
+ if (F.ElementExtensions) {
+ copy(Element.Methods, HTMLElement.prototype);
+ copy(Element.Methods.Simulated, HTMLElement.prototype, true);
+ }
+
+ if (F.SpecificElementExtensions) {
+ for (var tag in Element.Methods.ByTag) {
+ var klass = findDOMClass(tag);
+ if (typeof klass == "undefined") continue;
+ copy(T[tag], klass.prototype);
+ }
+ }
+
+ Object.extend(Element, Element.Methods);
+ delete Element.ByTag;
+};
+
+var Toggle = { display: Element.toggle };
+
+/*--------------------------------------------------------------------------*/
+
+Abstract.Insertion = function(adjacency) {
+ this.adjacency = adjacency;
+}
+
+Abstract.Insertion.prototype = {
+ initialize: function(element, content) {
+ this.element = $(element);
+ this.content = content.stripScripts();
+
+ if (this.adjacency && this.element.insertAdjacentHTML) {
+ try {
+ this.element.insertAdjacentHTML(this.adjacency, this.content);
+ } catch (e) {
+ var tagName = this.element.tagName.toUpperCase();
+ if (['TBODY', 'TR'].include(tagName)) {
+ this.insertContent(this.contentFromAnonymousTable());
+ } else {
+ throw e;
+ }
+ }
+ } else {
+ this.range = this.element.ownerDocument.createRange();
+ if (this.initializeRange) this.initializeRange();
+ this.insertContent([this.range.createContextualFragment(this.content)]);
+ }
+
+ setTimeout(function() {content.evalScripts()}, 10);
+ },
+
+ contentFromAnonymousTable: function() {
+ var div = document.createElement('div');
+ div.innerHTML = '<table><tbody>' + this.content + '</tbody></table>';
+ return $A(div.childNodes[0].childNodes[0].childNodes);
+ }
+}
+
+var Insertion = new Object();
+
+Insertion.Before = Class.create();
+Insertion.Before.prototype = Object.extend(new Abstract.Insertion('beforeBegin'), {
+ initializeRange: function() {
+ this.range.setStartBefore(this.element);
+ },
+
+ insertContent: function(fragments) {
+ fragments.each((function(fragment) {
+ this.element.parentNode.insertBefore(fragment, this.element);
+ }).bind(this));
+ }
+});
+
+Insertion.Top = Class.create();
+Insertion.Top.prototype = Object.extend(new Abstract.Insertion('afterBegin'), {
+ initializeRange: function() {
+ this.range.selectNodeContents(this.element);
+ this.range.collapse(true);
+ },
+
+ insertContent: function(fragments) {
+ fragments.reverse(false).each((function(fragment) {
+ this.element.insertBefore(fragment, this.element.firstChild);
+ }).bind(this));
+ }
+});
+
+Insertion.Bottom = Class.create();
+Insertion.Bottom.prototype = Object.extend(new Abstract.Insertion('beforeEnd'), {
+ initializeRange: function() {
+ this.range.selectNodeContents(this.element);
+ this.range.collapse(this.element);
+ },
+
+ insertContent: function(fragments) {
+ fragments.each((function(fragment) {
+ this.element.appendChild(fragment);
+ }).bind(this));
+ }
+});
+
+Insertion.After = Class.create();
+Insertion.After.prototype = Object.extend(new Abstract.Insertion('afterEnd'), {
+ initializeRange: function() {
+ this.range.setStartAfter(this.element);
+ },
+
+ insertContent: function(fragments) {
+ fragments.each((function(fragment) {
+ this.element.parentNode.insertBefore(fragment,
+ this.element.nextSibling);
+ }).bind(this));
+ }
+});
+
+/*--------------------------------------------------------------------------*/
+
+Element.ClassNames = Class.create();
+Element.ClassNames.prototype = {
+ initialize: function(element) {
+ this.element = $(element);
+ },
+
+ _each: function(iterator) {
+ this.element.className.split(/\s+/).select(function(name) {
+ return name.length > 0;
+ })._each(iterator);
+ },
+
+ set: function(className) {
+ this.element.className = className;
+ },
+
+ add: function(classNameToAdd) {
+ if (this.include(classNameToAdd)) return;
+ this.set($A(this).concat(classNameToAdd).join(' '));
+ },
+
+ remove: function(classNameToRemove) {
+ if (!this.include(classNameToRemove)) return;
+ this.set($A(this).without(classNameToRemove).join(' '));
+ },
+
+ toString: function() {
+ return $A(this).join(' ');
+ }
+};
+
+Object.extend(Element.ClassNames.prototype, Enumerable);
+/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
+ * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
+ * license. Please see http://www.yui-ext.com/ for more information. */
+
+var Selector = Class.create();
+
+Selector.prototype = {
+ initialize: function(expression) {
+ this.expression = expression.strip();
+ this.compileMatcher();
+ },
+
+ compileMatcher: function() {
+ // Selectors with namespaced attributes can't use the XPath version
+ if (Prototype.BrowserFeatures.XPath && !(/\[[\w-]*?:/).test(this.expression))
+ return this.compileXPathMatcher();
+
+ var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
+ c = Selector.criteria, le, p, m;
+
+ if (Selector._cache[e]) {
+ this.matcher = Selector._cache[e]; return;
+ }
+ this.matcher = ["this.matcher = function(root) {",
+ "var r = root, h = Selector.handlers, c = false, n;"];
+
+ while (e && le != e && (/\S/).test(e)) {
+ le = e;
+ for (var i in ps) {
+ p = ps[i];
+ if (m = e.match(p)) {
+ this.matcher.push(typeof c[i] == 'function' ? c[i](m) :
+ new Template(c[i]).evaluate(m));
+ e = e.replace(m[0], '');
+ break;
+ }
+ }
+ }
+
+ this.matcher.push("return h.unique(n);\n}");
+ eval(this.matcher.join('\n'));
+ Selector._cache[this.expression] = this.matcher;
+ },
+
+ compileXPathMatcher: function() {
+ var e = this.expression, ps = Selector.patterns,
+ x = Selector.xpath, le, m;
+
+ if (Selector._cache[e]) {
+ this.xpath = Selector._cache[e]; return;
+ }
+
+ this.matcher = ['.//*'];
+ while (e && le != e && (/\S/).test(e)) {
+ le = e;
+ for (var i in ps) {
+ if (m = e.match(ps[i])) {
+ this.matcher.push(typeof x[i] == 'function' ? x[i](m) :
+ new Template(x[i]).evaluate(m));
+ e = e.replace(m[0], '');
+ break;
+ }
+ }
+ }
+
+ this.xpath = this.matcher.join('');
+ Selector._cache[this.expression] = this.xpath;
+ },
+
+ findElements: function(root) {
+ root = root || document;
+ if (this.xpath) return document._getElementsByXPath(this.xpath, root);
+ return this.matcher(root);
+ },
+
+ match: function(element) {
+ return this.findElements(document).include(element);
+ },
+
+ toString: function() {
+ return this.expression;
+ },
+
+ inspect: function() {
+ return "#<Selector:" + this.expression.inspect() + ">";
+ }
+};
+
+Object.extend(Selector, {
+ _cache: {},
+
+ xpath: {
+ descendant: "//*",
+ child: "/*",
+ adjacent: "/following-sibling::*[1]",
+ laterSibling: '/following-sibling::*',
+ tagName: function(m) {
+ if (m[1] == '*') return '';
+ return "[local-name()='" + m[1].toLowerCase() +
+ "' or local-name()='" + m[1].toUpperCase() + "']";
+ },
+ className: "[contains(concat(' ', @class, ' '), ' #{1} ')]",
+ id: "[@id='#{1}']",
+ attrPresence: "[@#{1}]",
+ attr: function(m) {
+ m[3] = m[5] || m[6];
+ return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
+ },
+ pseudo: function(m) {
+ var h = Selector.xpath.pseudos[m[1]];
+ if (!h) return '';
+ if (typeof h === 'function') return h(m);
+ return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
+ },
+ operators: {
+ '=': "[@#{1}='#{3}']",
+ '!=': "[@#{1}!='#{3}']",
+ '^=': "[starts-with(@#{1}, '#{3}')]",
+ '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
+ '*=': "[contains(@#{1}, '#{3}')]",
+ '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
+ '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
+ },
+ pseudos: {
+ 'first-child': '[not(preceding-sibling::*)]',
+ 'last-child': '[not(following-sibling::*)]',
+ 'only-child': '[not(preceding-sibling::* or following-sibling::*)]',
+ 'empty': "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
+ 'checked': "[@checked]",
+ 'disabled': "[@disabled]",
+ 'enabled': "[not(@disabled)]",
+ 'not': function(m) {
+ var e = m[6], p = Selector.patterns,
+ x = Selector.xpath, le, m, v;
+
+ var exclusion = [];
+ while (e && le != e && (/\S/).test(e)) {
+ le = e;
+ for (var i in p) {
+ if (m = e.match(p[i])) {
+ v = typeof x[i] == 'function' ? x[i](m) : new Template(x[i]).evaluate(m);
+ exclusion.push("(" + v.substring(1, v.length - 1) + ")");
+ e = e.replace(m[0], '');
+ break;
+ }
+ }
+ }
+ return "[not(" + exclusion.join(" and ") + ")]";
+ },
+ 'nth-child': function(m) {
+ return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
+ },
+ 'nth-last-child': function(m) {
+ return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
+ },
+ 'nth-of-type': function(m) {
+ return Selector.xpath.pseudos.nth("position() ", m);
+ },
+ 'nth-last-of-type': function(m) {
+ return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
+ },
+ 'first-of-type': function(m) {
+ m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
+ },
+ 'last-of-type': function(m) {
+ m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
+ },
+ 'only-of-type': function(m) {
+ var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
+ },
+ nth: function(fragment, m) {
+ var mm, formula = m[6], predicate;
+ if (formula == 'even') formula = '2n+0';
+ if (formula == 'odd') formula = '2n+1';
+ if (mm = formula.match(/^(\d+)$/)) // digit only
+ return '[' + fragment + "= " + mm[1] + ']';
+ if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
+ if (mm[1] == "-") mm[1] = -1;
+ var a = mm[1] ? Number(mm[1]) : 1;
+ var b = mm[2] ? Number(mm[2]) : 0;
+ predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
+ "((#{fragment} - #{b}) div #{a} >= 0)]";
+ return new Template(predicate).evaluate({
+ fragment: fragment, a: a, b: b });
+ }
+ }
+ }
+ },
+
+ criteria: {
+ tagName: 'n = h.tagName(n, r, "#{1}", c); c = false;',
+ className: 'n = h.className(n, r, "#{1}", c); c = false;',
+ id: 'n = h.id(n, r, "#{1}", c); c = false;',
+ attrPresence: 'n = h.attrPresence(n, r, "#{1}"); c = false;',
+ attr: function(m) {
+ m[3] = (m[5] || m[6]);
+ return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}"); c = false;').evaluate(m);
+ },
+ pseudo: function(m) {
+ if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
+ return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
+ },
+ descendant: 'c = "descendant";',
+ child: 'c = "child";',
+ adjacent: 'c = "adjacent";',
+ laterSibling: 'c = "laterSibling";'
+ },
+
+ patterns: {
+ // combinators must be listed first
+ // (and descendant needs to be last combinator)
+ laterSibling: /^\s*~\s*/,
+ child: /^\s*>\s*/,
+ adjacent: /^\s*\+\s*/,
+ descendant: /^\s/,
+
+ // selectors follow
+ tagName: /^\s*(\*|[\w\-]+)(\b|$)?/,
+ id: /^#([\w\-\*]+)(\b|$)/,
+ className: /^\.([\w\-\*]+)(\b|$)/,
+ pseudo: /^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|\s|(?=:))/,
+ attrPresence: /^\[([\w]+)\]/,
+ attr: /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\]]*?)\4|([^'"][^\]]*?)))?\]/
+ },
+
+ handlers: {
+ // UTILITY FUNCTIONS
+ // joins two collections
+ concat: function(a, b) {
+ for (var i = 0, node; node = b[i]; i++)
+ a.push(node);
+ return a;
+ },
+
+ // marks an array of nodes for counting
+ mark: function(nodes) {
+ for (var i = 0, node; node = nodes[i]; i++)
+ node._counted = true;
+ return nodes;
+ },
+
+ unmark: function(nodes) {
+ for (var i = 0, node; node = nodes[i]; i++)
+ node._counted = undefined;
+ return nodes;
+ },
+
+ // mark each child node with its position (for nth calls)
+ // "ofType" flag indicates whether we're indexing for nth-of-type
+ // rather than nth-child
+ index: function(parentNode, reverse, ofType) {
+ parentNode._counted = true;
+ if (reverse) {
+ for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
+ node = nodes[i];
+ if (node.nodeType == 1 && (!ofType || node._counted)) node.nodeIndex = j++;
+ }
+ } else {
+ for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
+ if (node.nodeType == 1 && (!ofType || node._counted)) node.nodeIndex = j++;
+ }
+ },
+
+ // filters out duplicates and extends all nodes
+ unique: function(nodes) {
+ if (nodes.length == 0) return nodes;
+ var results = [], n;
+ for (var i = 0, l = nodes.length; i < l; i++)
+ if (!(n = nodes[i])._counted) {
+ n._counted = true;
+ results.push(Element.extend(n));
+ }
+ return Selector.handlers.unmark(results);
+ },
+
+ // COMBINATOR FUNCTIONS
+ descendant: function(nodes) {
+ var h = Selector.handlers;
+ for (var i = 0, results = [], node; node = nodes[i]; i++)
+ h.concat(results, node.getElementsByTagName('*'));
+ return results;
+ },
+
+ child: function(nodes) {
+ var h = Selector.handlers;
+ for (var i = 0, results = [], node; node = nodes[i]; i++) {
+ for (var j = 0, children = [], child; child = node.childNodes[j]; j++)
+ if (child.nodeType == 1 && child.tagName != '!') results.push(child);
+ }
+ return results;
+ },
+
+ adjacent: function(nodes) {
+ for (var i = 0, results = [], node; node = nodes[i]; i++) {
+ var next = this.nextElementSibling(node);
+ if (next) results.push(next);
+ }
+ return results;
+ },
+
+ laterSibling: function(nodes) {
+ var h = Selector.handlers;
+ for (var i = 0, results = [], node; node = nodes[i]; i++)
+ h.concat(results, Element.nextSiblings(node));
+ return results;
+ },
+
+ nextElementSibling: function(node) {
+ while (node = node.nextSibling)
+ if (node.nodeType == 1) return node;
+ return null;
+ },
+
+ previousElementSibling: function(node) {
+ while (node = node.previousSibling)
+ if (node.nodeType == 1) return node;
+ return null;
+ },
+
+ // TOKEN FUNCTIONS
+ tagName: function(nodes, root, tagName, combinator) {
+ tagName = tagName.toUpperCase();
+ var results = [], h = Selector.handlers;
+ if (nodes) {
+ if (combinator) {
+ // fastlane for ordinary descendant combinators
+ if (combinator == "descendant") {
+ for (var i = 0, node; node = nodes[i]; i++)
+ h.concat(results, node.getElementsByTagName(tagName));
+ return results;
+ } else nodes = this[combinator](nodes);
+ if (tagName == "*") return nodes;
+ }
+ for (var i = 0, node; node = nodes[i]; i++)
+ if (node.tagName.toUpperCase() == tagName) results.push(node);
+ return results;
+ } else return root.getElementsByTagName(tagName);
+ },
+
+ id: function(nodes, root, id, combinator) {
+ var targetNode = $(id), h = Selector.handlers;
+ if (!nodes && root == document) return targetNode ? [targetNode] : [];
+ if (nodes) {
+ if (combinator) {
+ if (combinator == 'child') {
+ for (var i = 0, node; node = nodes[i]; i++)
+ if (targetNode.parentNode == node) return [targetNode];
+ } else if (combinator == 'descendant') {
+ for (var i = 0, node; node = nodes[i]; i++)
+ if (Element.descendantOf(targetNode, node)) return [targetNode];
+ } else if (combinator == 'adjacent') {
+ for (var i = 0, node; node = nodes[i]; i++)
+ if (Selector.handlers.previousElementSibling(targetNode) == node)
+ return [targetNode];
+ } else nodes = h[combinator](nodes);
+ }
+ for (var i = 0, node; node = nodes[i]; i++)
+ if (node == targetNode) return [targetNode];
+ return [];
+ }
+ return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
+ },
+
+ className: function(nodes, root, className, combinator) {
+ if (nodes && combinator) nodes = this[combinator](nodes);
+ return Selector.handlers.byClassName(nodes, root, className);
+ },
+
+ byClassName: function(nodes, root, className) {
+ if (!nodes) nodes = Selector.handlers.descendant([root]);
+ var needle = ' ' + className + ' ';
+ for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
+ nodeClassName = node.className;
+ if (nodeClassName.length == 0) continue;
+ if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
+ results.push(node);
+ }
+ return results;
+ },
+
+ attrPresence: function(nodes, root, attr) {
+ var results = [];
+ for (var i = 0, node; node = nodes[i]; i++)
+ if (Element.hasAttribute(node, attr)) results.push(node);
+ return results;
+ },
+
+ attr: function(nodes, root, attr, value, operator) {
+ if (!nodes) nodes = root.getElementsByTagName("*");
+ var handler = Selector.operators[operator], results = [];
+ for (var i = 0, node; node = nodes[i]; i++) {
+ var nodeValue = Element.readAttribute(node, attr);
+ if (nodeValue === null) continue;
+ if (handler(nodeValue, value)) results.push(node);
+ }
+ return results;
+ },
+
+ pseudo: function(nodes, name, value, root, combinator) {
+ if (nodes && combinator) nodes = this[combinator](nodes);
+ if (!nodes) nodes = root.getElementsByTagName("*");
+ return Selector.pseudos[name](nodes, value, root);
+ }
+ },
+
+ pseudos: {
+ 'first-child': function(nodes, value, root) {
+ for (var i = 0, results = [], node; node = nodes[i]; i++) {
+ if (Selector.handlers.previousElementSibling(node)) continue;
+ results.push(node);
+ }
+ return results;
+ },
+ 'last-child': function(nodes, value, root) {
+ for (var i = 0, results = [], node; node = nodes[i]; i++) {
+ if (Selector.handlers.nextElementSibling(node)) continue;
+ results.push(node);
+ }
+ return results;
+ },
+ 'only-child': function(nodes, value, root) {
+ var h = Selector.handlers;
+ for (var i = 0, results = [], node; node = nodes[i]; i++)
+ if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
+ results.push(node);
+ return results;
+ },
+ 'nth-child': function(nodes, formula, root) {
+ return Selector.pseudos.nth(nodes, formula, root);
+ },
+ 'nth-last-child': function(nodes, formula, root) {
+ return Selector.pseudos.nth(nodes, formula, root, true);
+ },
+ 'nth-of-type': function(nodes, formula, root) {
+ return Selector.pseudos.nth(nodes, formula, root, false, true);
+ },
+ 'nth-last-of-type': function(nodes, formula, root) {
+ return Selector.pseudos.nth(nodes, formula, root, true, true);
+ },
+ 'first-of-type': function(nodes, formula, root) {
+ return Selector.pseudos.nth(nodes, "1", root, false, true);
+ },
+ 'last-of-type': function(nodes, formula, root) {
+ return Selector.pseudos.nth(nodes, "1", root, true, true);
+ },
+ 'only-of-type': function(nodes, formula, root) {
+ var p = Selector.pseudos;
+ return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
+ },
+
+ // handles the an+b logic
+ getIndices: function(a, b, total) {
+ if (a == 0) return b > 0 ? [b] : [];
+ return $R(1, total).inject([], function(memo, i) {
+ if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
+ return memo;
+ });
+ },
+
+ // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
+ nth: function(nodes, formula, root, reverse, ofType) {
+ if (nodes.length == 0) return [];
+ if (formula == 'even') formula = '2n+0';
+ if (formula == 'odd') formula = '2n+1';
+ var h = Selector.handlers, results = [], indexed = [], m;
+ h.mark(nodes);
+ for (var i = 0, node; node = nodes[i]; i++) {
+ if (!node.parentNode._counted) {
+ h.index(node.parentNode, reverse, ofType);
+ indexed.push(node.parentNode);
+ }
+ }
+ if (formula.match(/^\d+$/)) { // just a number
+ formula = Number(formula);
+ for (var i = 0, node; node = nodes[i]; i++)
+ if (node.nodeIndex == formula) results.push(node);
+ } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
+ if (m[1] == "-") m[1] = -1;
+ var a = m[1] ? Number(m[1]) : 1;
+ var b = m[2] ? Number(m[2]) : 0;
+ var indices = Selector.pseudos.getIndices(a, b, nodes.length);
+ for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
+ for (var j = 0; j < l; j++)
+ if (node.nodeIndex == indices[j]) results.push(node);
+ }
+ }
+ h.unmark(nodes);
+ h.unmark(indexed);
+ return results;
+ },
+
+ 'empty': function(nodes, value, root) {
+ for (var i = 0, results = [], node; node = nodes[i]; i++) {
+ // IE treats comments as element nodes
+ if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
+ results.push(node);
+ }
+ return results;
+ },
+
+ 'not': function(nodes, selector, root) {
+ var h = Selector.handlers, selectorType, m;
+ var exclusions = new Selector(selector).findElements(root);
+ h.mark(exclusions);
+ for (var i = 0, results = [], node; node = nodes[i]; i++)
+ if (!node._counted) results.push(node);
+ h.unmark(exclusions);
+ return results;
+ },
+
+ 'enabled': function(nodes, value, root) {
+ for (var i = 0, results = [], node; node = nodes[i]; i++)
+ if (!node.disabled) results.push(node);
+ return results;
+ },
+
+ 'disabled': function(nodes, value, root) {
+ for (var i = 0, results = [], node; node = nodes[i]; i++)
+ if (node.disabled) results.push(node);
+ return results;
+ },
+
+ 'checked': function(nodes, value, root) {
+ for (var i = 0, results = [], node; node = nodes[i]; i++)
+ if (node.checked) results.push(node);
+ return results;
+ }
+ },
+
+ operators: {
+ '=': function(nv, v) { return nv == v; },
+ '!=': function(nv, v) { return nv != v; },
+ '^=': function(nv, v) { return nv.startsWith(v); },
+ '$=': function(nv, v) { return nv.endsWith(v); },
+ '*=': function(nv, v) { return nv.include(v); },
+ '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
+ '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
+ },
+
+ matchElements: function(elements, expression) {
+ var matches = new Selector(expression).findElements(), h = Selector.handlers;
+ h.mark(matches);
+ for (var i = 0, results = [], element; element = elements[i]; i++)
+ if (element._counted) results.push(element);
+ h.unmark(matches);
+ return results;
+ },
+
+ findElement: function(elements, expression, index) {
+ if (typeof expression == 'number') {
+ index = expression; expression = false;
+ }
+ return Selector.matchElements(elements, expression || '*')[index || 0];
+ },
+
+ findChildElements: function(element, expressions) {
+ var exprs = expressions.join(','), expressions = [];
+ exprs.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
+ expressions.push(m[1].strip());
+ });
+ var results = [], h = Selector.handlers;
+ for (var i = 0, l = expressions.length, selector; i < l; i++) {
+ selector = new Selector(expressions[i].strip());
+ h.concat(results, selector.findElements(element));
+ }
+ return (l > 1) ? h.unique(results) : results;
+ }
+});
+
+function $$() {
+ return Selector.findChildElements(document, $A(arguments));
+}
+var Form = {
+ reset: function(form) {
+ $(form).reset();
+ return form;
+ },
+
+ serializeElements: function(elements, getHash) {
+ var data = elements.inject({}, function(result, element) {
+ if (!element.disabled && element.name) {
+ var key = element.name, value = $(element).getValue();
+ if (value != null) {
+ if (key in result) {
+ if (result[key].constructor != Array) result[key] = [result[key]];
+ result[key].push(value);
+ }
+ else result[key] = value;
+ }
+ }
+ return result;
+ });
+
+ return getHash ? data : Hash.toQueryString(data);
+ }
+};
+
+Form.Methods = {
+ serialize: function(form, getHash) {
+ return Form.serializeElements(Form.getElements(form), getHash);
+ },
+
+ getElements: function(form) {
+ return $A($(form).getElementsByTagName('*')).inject([],
+ function(elements, child) {
+ if (Form.Element.Serializers[child.tagName.toLowerCase()])
+ elements.push(Element.extend(child));
+ return elements;
+ }
+ );
+ },
+
+ getInputs: function(form, typeName, name) {
+ form = $(form);
+ var inputs = form.getElementsByTagName('input');
+
+ if (!typeName && !name) return $A(inputs).map(Element.extend);
+
+ for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
+ var input = inputs[i];
+ if ((typeName && input.type != typeName) || (name && input.name != name))
+ continue;
+ matchingInputs.push(Element.extend(input));
+ }
+
+ return matchingInputs;
+ },
+
+ disable: function(form) {
+ form = $(form);
+ Form.getElements(form).invoke('disable');
+ return form;
+ },
+
+ enable: function(form) {
+ form = $(form);
+ Form.getElements(form).invoke('enable');
+ return form;
+ },
+
+ findFirstElement: function(form) {
+ return $(form).getElements().find(function(element) {
+ return element.type != 'hidden' && !element.disabled &&
+ ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
+ });
+ },
+
+ focusFirstElement: function(form) {
+ form = $(form);
+ form.findFirstElement().activate();
+ return form;
+ },
+
+ request: function(form, options) {
+ form = $(form), options = Object.clone(options || {});
+
+ var params = options.parameters;
+ options.parameters = form.serialize(true);
+
+ if (params) {
+ if (typeof params == 'string') params = params.toQueryParams();
+ Object.extend(options.parameters, params);
+ }
+
+ if (form.hasAttribute('method') && !options.method)
+ options.method = form.method;
+
+ return new Ajax.Request(form.readAttribute('action'), options);
+ }
+}
+
+/*--------------------------------------------------------------------------*/
+
+Form.Element = {
+ focus: function(element) {
+ $(element).focus();
+ return element;
+ },
+
+ select: function(element) {
+ $(element).select();
+ return element;
+ }
+}
+
+Form.Element.Methods = {
+ serialize: function(element) {
+ element = $(element);
+ if (!element.disabled && element.name) {
+ var value = element.getValue();
+ if (value != undefined) {
+ var pair = {};
+ pair[element.name] = value;
+ return Hash.toQueryString(pair);
+ }
+ }
+ return '';
+ },
+
+ getValue: function(element) {
+ element = $(element);
+ var method = element.tagName.toLowerCase();
+ return Form.Element.Serializers[method](element);
+ },
+
+ clear: function(element) {
+ $(element).value = '';
+ return element;
+ },
+
+ present: function(element) {
+ return $(element).value != '';
+ },
+
+ activate: function(element) {
+ element = $(element);
+ try {
+ element.focus();
+ if (element.select && (element.tagName.toLowerCase() != 'input' ||
+ !['button', 'reset', 'submit'].include(element.type)))
+ element.select();
+ } catch (e) {}
+ return element;
+ },
+
+ disable: function(element) {
+ element = $(element);
+ element.blur();
+ element.disabled = true;
+ return element;
+ },
+
+ enable: function(element) {
+ element = $(element);
+ element.disabled = false;
+ return element;
+ }
+}
+
+/*--------------------------------------------------------------------------*/
+
+var Field = Form.Element;
+var $F = Form.Element.Methods.getValue;
+
+/*--------------------------------------------------------------------------*/
+
+Form.Element.Serializers = {
+ input: function(element) {
+ switch (element.type.toLowerCase()) {
+ case 'checkbox':
+ case 'radio':
+ return Form.Element.Serializers.inputSelector(element);
+ default:
+ return Form.Element.Serializers.textarea(element);
+ }
+ },
+
+ inputSelector: function(element) {
+ return element.checked ? element.value : null;
+ },
+
+ textarea: function(element) {
+ return element.value;
+ },
+
+ select: function(element) {
+ return this[element.type == 'select-one' ?
+ 'selectOne' : 'selectMany'](element);
+ },
+
+ selectOne: function(element) {
+ var index = element.selectedIndex;
+ return index >= 0 ? this.optionValue(element.options[index]) : null;
+ },
+
+ selectMany: function(element) {
+ var values, length = element.length;
+ if (!length) return null;
+
+ for (var i = 0, values = []; i < length; i++) {
+ var opt = element.options[i];
+ if (opt.selected) values.push(this.optionValue(opt));
+ }
+ return values;
+ },
+
+ optionValue: function(opt) {
+ // extend element because hasAttribute may not be native
+ return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
+ }
+}
+
+/*--------------------------------------------------------------------------*/
+
+Abstract.TimedObserver = function() {}
+Abstract.TimedObserver.prototype = {
+ initialize: function(element, frequency, callback) {
+ this.frequency = frequency;
+ this.element = $(element);
+ this.callback = callback;
+
+ this.lastValue = this.getValue();
+ this.registerCallback();
+ },
+
+ registerCallback: function() {
+ setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
+ },
+
+ onTimerEvent: function() {
+ var value = this.getValue();
+ var changed = ('string' == typeof this.lastValue && 'string' == typeof value
+ ? this.lastValue != value : String(this.lastValue) != String(value));
+ if (changed) {
+ this.callback(this.element, value);
+ this.lastValue = value;
+ }
+ }
+}
+
+Form.Element.Observer = Class.create();
+Form.Element.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {
+ getValue: function() {
+ return Form.Element.getValue(this.element);
+ }
+});
+
+Form.Observer = Class.create();
+Form.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {
+ getValue: function() {
+ return Form.serialize(this.element);
+ }
+});
+
+/*--------------------------------------------------------------------------*/
+
+Abstract.EventObserver = function() {}
+Abstract.EventObserver.prototype = {
+ initialize: function(element, callback) {
+ this.element = $(element);
+ this.callback = callback;
+
+ this.lastValue = this.getValue();
+ if (this.element.tagName.toLowerCase() == 'form')
+ this.registerFormCallbacks();
+ else
+ this.registerCallback(this.element);
+ },
+
+ onElementEvent: function() {
+ var value = this.getValue();
+ if (this.lastValue != value) {
+ this.callback(this.element, value);
+ this.lastValue = value;
+ }
+ },
+
+ registerFormCallbacks: function() {
+ Form.getElements(this.element).each(this.registerCallback.bind(this));
+ },
+
+ registerCallback: function(element) {
+ if (element.type) {
+ switch (element.type.toLowerCase()) {
+ case 'checkbox':
+ case 'radio':
+ Event.observe(element, 'click', this.onElementEvent.bind(this));
+ break;
+ default:
+ Event.observe(element, 'change', this.onElementEvent.bind(this));
+ break;
+ }
+ }
+ }
+}
+
+Form.Element.EventObserver = Class.create();
+Form.Element.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {
+ getValue: function() {
+ return Form.Element.getValue(this.element);
+ }
+});
+
+Form.EventObserver = Class.create();
+Form.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {
+ getValue: function() {
+ return Form.serialize(this.element);
+ }
+});
+if (!window.Event) {
+ var Event = new Object();
+}
+
+Object.extend(Event, {
+ KEY_BACKSPACE: 8,
+ KEY_TAB: 9,
+ KEY_RETURN: 13,
+ KEY_ESC: 27,
+ KEY_LEFT: 37,
+ KEY_UP: 38,
+ KEY_RIGHT: 39,
+ KEY_DOWN: 40,
+ KEY_DELETE: 46,
+ KEY_HOME: 36,
+ KEY_END: 35,
+ KEY_PAGEUP: 33,
+ KEY_PAGEDOWN: 34,
+
+ element: function(event) {
+ return $(event.target || event.srcElement);
+ },
+
+ isLeftClick: function(event) {
+ return (((event.which) && (event.which == 1)) ||
+ ((event.button) && (event.button == 1)));
+ },
+
+ pointerX: function(event) {
+ return event.pageX || (event.clientX +
+ (document.documentElement.scrollLeft || document.body.scrollLeft));
+ },
+
+ pointerY: function(event) {
+ return event.pageY || (event.clientY +
+ (document.documentElement.scrollTop || document.body.scrollTop));
+ },
+
+ stop: function(event) {
+ if (event.preventDefault) {
+ event.preventDefault();
+ event.stopPropagation();
+ } else {
+ event.returnValue = false;
+ event.cancelBubble = true;
+ }
+ },
+
+ // find the first node with the given tagName, starting from the
+ // node the event was triggered on; traverses the DOM upwards
+ findElement: function(event, tagName) {
+ var element = Event.element(event);
+ while (element.parentNode && (!element.tagName ||
+ (element.tagName.toUpperCase() != tagName.toUpperCase())))
+ element = element.parentNode;
+ return element;
+ },
+
+ observers: false,
+
+ _observeAndCache: function(element, name, observer, useCapture) {
+ if (!this.observers) this.observers = [];
+ if (element.addEventListener) {
+ this.observers.push([element, name, observer, useCapture]);
+ element.addEventListener(name, observer, useCapture);
+ } else if (element.attachEvent) {
+ this.observers.push([element, name, observer, useCapture]);
+ element.attachEvent('on' + name, observer);
+ }
+ },
+
+ unloadCache: function() {
+ if (!Event.observers) return;
+ for (var i = 0, length = Event.observers.length; i < length; i++) {
+ Event.stopObserving.apply(this, Event.observers[i]);
+ Event.observers[i][0] = null;
+ }
+ Event.observers = false;
+ },
+
+ observe: function(element, name, observer, useCapture) {
+ element = $(element);
+ useCapture = useCapture || false;
+
+ if (name == 'keypress' &&
+ (Prototype.Browser.WebKit || element.attachEvent))
+ name = 'keydown';
+
+ Event._observeAndCache(element, name, observer, useCapture);
+ },
+
+ stopObserving: function(element, name, observer, useCapture) {
+ element = $(element);
+ useCapture = useCapture || false;
+
+ if (name == 'keypress' &&
+ (Prototype.Browser.WebKit || element.attachEvent))
+ name = 'keydown';
+
+ if (element.removeEventListener) {
+ element.removeEventListener(name, observer, useCapture);
+ } else if (element.detachEvent) {
+ try {
+ element.detachEvent('on' + name, observer);
+ } catch (e) {}
+ }
+ }
+});
+
+/* prevent memory leaks in IE */
+if (Prototype.Browser.IE)
+ Event.observe(window, 'unload', Event.unloadCache, false);
+var Position = {
+ // set to true if needed, warning: firefox performance problems
+ // NOT neeeded for page scrolling, only if draggable contained in
+ // scrollable elements
+ includeScrollOffsets: false,
+
+ // must be called before calling withinIncludingScrolloffset, every time the
+ // page is scrolled
+ prepare: function() {
+ this.deltaX = window.pageXOffset
+ || document.documentElement.scrollLeft
+ || document.body.scrollLeft
+ || 0;
+ this.deltaY = window.pageYOffset
+ || document.documentElement.scrollTop
+ || document.body.scrollTop
+ || 0;
+ },
+
+ realOffset: function(element) {
+ var valueT = 0, valueL = 0;
+ do {
+ valueT += element.scrollTop || 0;
+ valueL += element.scrollLeft || 0;
+ element = element.parentNode;
+ } while (element);
+ return [valueL, valueT];
+ },
+
+ cumulativeOffset: function(element) {
+ var valueT = 0, valueL = 0;
+ do {
+ valueT += element.offsetTop || 0;
+ valueL += element.offsetLeft || 0;
+ element = element.offsetParent;
+ } while (element);
+ return [valueL, valueT];
+ },
+
+ positionedOffset: function(element) {
+ var valueT = 0, valueL = 0;
+ do {
+ valueT += element.offsetTop || 0;
+ valueL += element.offsetLeft || 0;
+ element = element.offsetParent;
+ if (element) {
+ if(element.tagName=='BODY') break;
+ var p = Element.getStyle(element, 'position');
+ if (p == 'relative' || p == 'absolute') break;
+ }
+ } while (element);
+ return [valueL, valueT];
+ },
+
+ offsetParent: function(element) {
+ if (element.offsetParent) return element.offsetParent;
+ if (element == document.body) return element;
+
+ while ((element = element.parentNode) && element != document.body)
+ if (Element.getStyle(element, 'position') != 'static')
+ return element;
+
+ return document.body;
+ },
+
+ // caches x/y coordinate pair to use with overlap
+ within: function(element, x, y) {
+ if (this.includeScrollOffsets)
+ return this.withinIncludingScrolloffsets(element, x, y);
+ this.xcomp = x;
+ this.ycomp = y;
+ this.offset = this.cumulativeOffset(element);
+
+ return (y >= this.offset[1] &&
+ y < this.offset[1] + element.offsetHeight &&
+ x >= this.offset[0] &&
+ x < this.offset[0] + element.offsetWidth);
+ },
+
+ withinIncludingScrolloffsets: function(element, x, y) {
+ var offsetcache = this.realOffset(element);
+
+ this.xcomp = x + offsetcache[0] - this.deltaX;
+ this.ycomp = y + offsetcache[1] - this.deltaY;
+ this.offset = this.cumulativeOffset(element);
+
+ return (this.ycomp >= this.offset[1] &&
+ this.ycomp < this.offset[1] + element.offsetHeight &&
+ this.xcomp >= this.offset[0] &&
+ this.xcomp < this.offset[0] + element.offsetWidth);
+ },
+
+ // within must be called directly before
+ overlap: function(mode, element) {
+ if (!mode) return 0;
+ if (mode == 'vertical')
+ return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
+ element.offsetHeight;
+ if (mode == 'horizontal')
+ return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
+ element.offsetWidth;
+ },
+
+ page: function(forElement) {
+ var valueT = 0, valueL = 0;
+
+ var element = forElement;
+ do {
+ valueT += element.offsetTop || 0;
+ valueL += element.offsetLeft || 0;
+
+ // Safari fix
+ if (element.offsetParent == document.body)
+ if (Element.getStyle(element,'position')=='absolute') break;
+
+ } while (element = element.offsetParent);
+
+ element = forElement;
+ do {
+ if (!window.opera || element.tagName=='BODY') {
+ valueT -= element.scrollTop || 0;
+ valueL -= element.scrollLeft || 0;
+ }
+ } while (element = element.parentNode);
+
+ return [valueL, valueT];
+ },
+
+ clone: function(source, target) {
+ var options = Object.extend({
+ setLeft: true,
+ setTop: true,
+ setWidth: true,
+ setHeight: true,
+ offsetTop: 0,
+ offsetLeft: 0
+ }, arguments[2] || {})
+
+ // find page position of source
+ source = $(source);
+ var p = Position.page(source);
+
+ // find coordinate system to use
+ target = $(target);
+ var delta = [0, 0];
+ var parent = null;
+ // delta [0,0] will do fine with position: fixed elements,
+ // position:absolute needs offsetParent deltas
+ if (Element.getStyle(target,'position') == 'absolute') {
+ parent = Position.offsetParent(target);
+ delta = Position.page(parent);
+ }
+
+ // correct by body offsets (fixes Safari)
+ if (parent == document.body) {
+ delta[0] -= document.body.offsetLeft;
+ delta[1] -= document.body.offsetTop;
+ }
+
+ // set position
+ if(options.setLeft) target.style.left = (p[0] - delta[0] + options.offsetLeft) + 'px';
+ if(options.setTop) target.style.top = (p[1] - delta[1] + options.offsetTop) + 'px';
+ if(options.setWidth) target.style.width = source.offsetWidth + 'px';
+ if(options.setHeight) target.style.height = source.offsetHeight + 'px';
+ },
+
+ absolutize: function(element) {
+ element = $(element);
+ if (element.style.position == 'absolute') return;
+ Position.prepare();
+
+ var offsets = Position.positionedOffset(element);
+ var top = offsets[1];
+ var left = offsets[0];
+ var width = element.clientWidth;
+ var height = element.clientHeight;
+
+ element._originalLeft = left - parseFloat(element.style.left || 0);
+ element._originalTop = top - parseFloat(element.style.top || 0);
+ element._originalWidth = element.style.width;
+ element._originalHeight = element.style.height;
+
+ element.style.position = 'absolute';
+ element.style.top = top + 'px';
+ element.style.left = left + 'px';
+ element.style.width = width + 'px';
+ element.style.height = height + 'px';
+ },
+
+ relativize: function(element) {
+ element = $(element);
+ if (element.style.position == 'relative') return;
+ Position.prepare();
+
+ element.style.position = 'relative';
+ var top = parseFloat(element.style.top || 0) - (element._originalTop || 0);
+ var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);
+
+ element.style.top = top + 'px';
+ element.style.left = left + 'px';
+ element.style.height = element._originalHeight;
+ element.style.width = element._originalWidth;
+ }
+}
+
+// Safari returns margins on body which is incorrect if the child is absolutely
+// positioned. For performance reasons, redefine Position.cumulativeOffset for
+// KHTML/WebKit only.
+if (Prototype.Browser.WebKit) {
+ Position.cumulativeOffset = function(element) {
+ var valueT = 0, valueL = 0;
+ do {
+ valueT += element.offsetTop || 0;
+ valueL += element.offsetLeft || 0;
+ if (element.offsetParent == document.body)
+ if (Element.getStyle(element, 'position') == 'absolute') break;
+
+ element = element.offsetParent;
+ } while (element);
+
+ return [valueL, valueT];
+ }
+}
+
+Element.addMethods();
\ No newline at end of file
projects / invirt/packages/invirt-web.git / commitdiff
