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save_template.py

#!/usr/bin/env python
# vim:fileencoding=UTF-8:ts=4:sw=4:sta:et:sts=4:ai
from __future__ import with_statement

__license__   = 'GPL v3'
__copyright__ = '2009, Kovid Goyal <kovid@kovidgoyal.net>'
__docformat__ = 'restructuredtext en'

from PyQt4.Qt import QWidget

from calibre.gui2 import error_dialog
from calibre.gui2.dialogs.config.save_template_ui import Ui_Form
from calibre.library.save_to_disk import FORMAT_ARG_DESCS, \
        preprocess_template

class SaveTemplate(QWidget, Ui_Form):

    def __init__(self, *args):
        QWidget.__init__(self, *args)
        Ui_Form.__init__(self)
        self.setupUi(self)

    def initialize(self, name, default, help):
        variables = sorted(FORMAT_ARG_DESCS.keys())
        rows = []
        for var in variables:
            rows.append(u'<tr><td>%s</td><td>%s</td></tr>'%
                    (var, FORMAT_ARG_DESCS[var]))
        table = u'<table>%s</table>'%(u'\n'.join(rows))
        self.template_variables.setText(table)

        self.opt_template.initialize(name+'_template_history',
                default, help)
        self.option_name = name

    def validate(self):
        tmpl = preprocess_template(self.opt_template.text())
        fa = {}
        for x in FORMAT_ARG_DESCS.keys():
            fa[x]='random long string'
        try:
            tmpl.format(**fa)
        except Exception, err:
            error_dialog(self, _('Invalid template'),
                    '<p>'+_('The template %s is invalid:')%tmpl + \
                    '<br>'+str(err), show=True)
            return False
        return True

    def save_settings(self, config, name):
        val = unicode(self.opt_template.text())
        config.set(name, val)
        self.opt_template.save_history(self.option_name+'_template_history')






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