system_image.py

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# -*- coding: utf-8 -*-
# @COPYRIGHT_begin
#
# Copyright [2010-2014] Institute of Nuclear Physics PAN, Krakow, Poland
#
# Licensed under the Apache License, Version 2.0 (the "License");
#    you may not use this file except in compliance with the License.
#    You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS,
#    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#    See the License for the specific language governing permissions and
#    limitations under the License.
#
# @COPYRIGHT_end

##
# @package src.wi.forms.system_image
# 
# @author Krzysztof Danielowski
# @author Piotr Wójcik
# 

from django import forms
from django.utils.translation import ugettext_lazy as _

from wi.utils import parsing
from wi.utils.forms import attrs_dict, BetterForm, RequiredSelectValidation
from wi.utils.states import image_platforms_reversed
from wi.utils.widgets import SelectWithDisabled


##
# 
#     Form for <b>assigning image to group</b>.
#     
class AssignGroupForm(RequiredSelectValidation):
    def __init__(self, *args, **kwargs):
        rest_data = kwargs.pop('rest_data')
        super(AssignGroupForm, self).__init__(*args, **kwargs)
        self.fields['group_id'] = forms.ChoiceField(choices=parsing.parse_groups(rest_data), initial=0,
                                                    label=_("Group name"))
        self.fields['group_id'].widget.attrs['class'] = 'medium'

    ##
    # 
    #         Cast 'group_id' to int.
    #         
    def clean_group_id(self):
        return int(self.cleaned_data['group_id'])


##
# 
#     Form for <b>image's edition</b>.
#     
class EditImageForm(BetterForm):
    ##
    # 
    #         Fieldset names definition.
    #         
    class Meta:
        fieldsets = (('description', {'fields': ('name', 'description'), 'legend': _('Images description')}),
                     ('settings', {'fields': ('platform',), 'legend': _('Settings')}),
                     ('advanced', {'fields': ('video_device', 'network_device', 'disk_controller'), 'description': 'advanced', 'legend': _('Advanced settings')}),)

        def __init__(self):
            pass

    name = forms.CharField(widget=forms.TextInput(attrs=dict(attrs_dict, maxlength=45)),
                           label=_('Name'))
    description = forms.CharField(required=False,
                                  widget=forms.Textarea(attrs=dict(attrs_dict, maxlength=512, rows=3, cols=20)),
                                  label=_('Description'))

    def __init__(self, *args, **kwargs):
        rest_data = kwargs.pop('rest_data')
        super(EditImageForm, self).__init__(*args, **kwargs)
        self.fields['platform'] = forms.ChoiceField(choices=image_platforms_reversed.items(),
                                                    label=_('Platform'))
        self.fields['platform'].widget.attrs['class'] = 'medium'

        self.fields['disk_controller'] = forms.ChoiceField(choices=parsing.parse_generic_enabled(rest_data, 'disk_controllers'),
                                                           widget=SelectWithDisabled(attrs=dict()),
                                                           label=_('Bus'))
        self.fields['disk_controller'].widget.attrs['class'] = 'medium'

        self.fields['video_device'] = forms.ChoiceField(choices=parsing.parse_generic(rest_data, 'video_devices'),
                                                        widget=SelectWithDisabled(attrs=dict()),
                                                        label=_('Video'))
        self.fields['video_device'].widget.attrs['class'] = 'medium'

        self.fields['network_device'] = forms.ChoiceField(choices=parsing.parse_generic(rest_data, 'network_devices'),
                                                          widget=SelectWithDisabled(attrs=dict()),
                                                          label=_("Net"))
        self.fields['network_device'].widget.attrs['class'] = 'medium'

        self.fields.keyOrder = ['name', 'description', 'platform', 'disk_controller', 'video_device', 'network_device']

    ##
    # 
    #         Cast 'disk_controller' to int.
    #         
    def clean_disk_controller(self):
        return int(self.cleaned_data['disk_controller'])

    ##
    # 
    #         Cast 'video_device' to int.
    #         
    def clean_video_device(self):
        return int(self.cleaned_data['video_device'])

    ##
    # 
    #         Cast 'network_device' to int.
    #         
    def clean_network_device(self):
        return int(self.cleaned_data['network_device'])

    ##
    # 
    #         Cast 'platform' to int.
    #         
    def clean_platform(self):
        return int(self.cleaned_data['platform'])


##
# 
#     Form for <b>adding HTTP to image</b>.
#     
class AddImageHttp(EditImageForm, BetterForm):
    ##
    # 
    #         Fieldset names definition.
    #         
    class Meta:
        fieldsets = (('description', {'fields': ('name', 'description'), 'legend': _('Images description')}),
                     ('settings', {'fields': ('platform', 'path'), 'legend': _('Settings')}),
                     ('advanced', {'fields': ('video_device', 'network_device', 'disk_controller'), 'description': 'advanced', 'legend': _('Advanced settings')}),)

        def __init__(self):
            pass

    def __init__(self, *args, **kwargs):
        super(AddImageHttp, self).__init__(*args, **kwargs)
        self.fields['path'] = forms.CharField(widget=forms.Textarea(attrs=dict(attrs_dict, maxlength=500, rows=3, cols=20)),
                            label=_("Link to image (http:// or ftp://)"))

        self.fields.keyOrder = ['name', 'description', 'path', 'platform',
                                'disk_controller', 'video_device',
                                'network_device']