##################################################
# SPYCE - Python-based HTML Scripting
# Copyright (c) 2002 Rimon Barr.
#
# Refer to spyce.py
# CVS: $Id: core.py 1172 2006-08-29 16:59:46Z ellisj $
##################################################

__doc__ = '''Core Spyce tags.'''

import os.path
from spyceTag import spyceTagLibrary, spyceTagPlus, spyceTag, invokeSingleton
from spyceException import spyceDone
import spyce, spyceUtil
from _formhelper import formatArgs

_parent_files = {}
class tag_parent(spyceTagPlus):
  name = 'parent'
  def syntax(self):
    self.syntaxSingleOnly()
  def filename(self, uri):
    return spyceUtil.url2file(uri, self.getModule('request').filename())
  def find_parent(self, src):
    if not src:
      # check for parent file in current directory
      # (we don't climb further up the path tree, though; that doesn't make
      # sense for CGI-based installations)
      immediateparent = self.filename('parent.spi')
      if os.path.exists(immediateparent) \
      and immediateparent != self.getModule('request').filename():
        src = 'parent.spi'
      else:
        src = spyce.getServer().config.defaultparent
    if not src:
      raise 'src not specified, no parent.spi found in current directory, and defaultparent not configured'
    return src
  def begin(self, src=None, **kwargs):
    key = (self.getModule('request').filename(), src)
    try:
      pfile = _parent_files[key]
    except KeyError:
      pfile = _parent_files[key] = self.filename(self.find_parent(src))
    if self._api._parent:
      spyce.DEBUG('warning: replacing old parent %s with %s' % (self._api._parent, src))
    self._api._parent = (pfile, kwargs)


# most of the work here is special-cased by spyceCompile
class tag_login_required(spyceTagPlus):
  name = 'login_required'
  def syntax(self):
    self.syntaxSingleOnly()
  def begin(self, validator=None):
    import spyceConfig
    invokeSingleton(self._api, spyceConfig.loginrequired_render)
    raise spyceDone()


# most of the work here is special-cased by spyceCompile
class tag_login(spyceTagPlus):
  name = 'login'
  def syntax(self):
    self.syntaxSingleOnly()
  def begin(self, validator=None):
    self.parentRequired('form')
    import spyceConfig
    invokeSingleton(self._api, spyceConfig.login_render)


# modified from code generated by spyceCompile from the following:
# [[.begin name=logout singleton=True]]
#   <f:submit handler="_coreutil.logout" value="Log out" />
# [[.end]]
class tag_logout(spyceTagPlus):
  name='logout'
  def syntax(self):
    self.syntaxSingleOnly()
  def begin(self):
    self.parentRequired('form')

    request = self._api.getModule('request')
    taglib = self._api.getModules()['taglib']
    taglib.load('form','form.py','f')
    
    taglib.tagPush('f','submit','_spy_logout',locals(),{'handler':'_coreutil.logout','value':'Log out'},False)
    try:
      taglib.tagBegin()
      taglib.tagBody()
      taglib.tagEnd()
    finally:taglib.tagPop()

  # TODO spoof line numbers in classcode better
  handlers = {'_spy_logout': ['_coreutil.logout']}


class tag_list(spyceTagPlus):
  def begin(self, data, **kwargs):
    self.getOut().write('<%s%s>' % (self.name, formatArgs(kwargs)))
    for item in self.eval(data):
      self.getOut().write('<li>%s</li>' % item)
  def end(self):
    self.getOut().write('</%s>' % self.name)
class tag_ul(tag_list):
  name = 'ul'
class tag_ol(tag_list):
  name = 'ol'

class tag_dl(spyceTagPlus):
  name = 'dl'
  def begin(self, data, **kwargs):
    self.getOut().write('<dl%s>' % formatArgs(kwargs))
    for term, desc in self.eval(data):
      self.getOut().write('<dt>%s</dt><dd>%s</dd>' % (term, desc))
  def end(self):
    self.getOut().write('</dl>')

class tag_table(spyceTagPlus):
  name = 'table'
  def begin(self, data, **kwargs):
    self.getOut().write('<table%s>' % formatArgs(kwargs))
    for row in self.eval(data):
      self.getOut().write('<tr>')
      for item in row:
        self.getOut().write('<td>%s</td>' % item)
      self.getOut().write('</tr>')
  def end(self):
    self.getOut().write('</table>')

class core(spyceTagLibrary):
  tags = [
    tag_parent, 

    tag_login_required,    
    tag_login,
    tag_logout,
    
    tag_ul,
    tag_ol,
    tag_dl,
    tag_table,
  ]