class ApplyCreditNoteForm(forms.Form):

    def __init__(self, user, *a, **k):

        ''' User: The user whose invoices should be made available as

        choices. '''

class CancellationFeeForm(forms.Form):

    percentage = forms.DecimalField(

        required=True,

        min_value=0,

class ManualCreditNoteRefundForm(forms.ModelForm):

    class Meta:

        model = commerce.ManualCreditNoteRefund

        fields = ["reference"]

class ManualPaymentForm(forms.ModelForm):

    class Meta:

        model = commerce.ManualPayment

        fields = ["reference", "amount"]

class _ProductsForm(_HasProductsFields, forms.Form):

    pass

class _ItemQuantityProductsFormSet(_HasProductsFields, forms.BaseFormSet):

    @classmethod

    def set_fields(cls, category, products):

        raise ValueError("set_fields must be called on the underlying Form")

class VoucherForm(forms.Form):

    voucher = forms.CharField(

        label="Voucher code",

        help_text="If you have a voucher code, enter it here",

class InvoicesWithProductAndStatusForm(forms.Form):

    invoice = forms.ModelMultipleChoiceField(

        widget=forms.CheckboxSelectMultiple,

        queryset=commerce.Invoice.objects.all(),

class DiscountForm(forms.Form):

    discount = forms.ModelMultipleChoiceField(

        queryset=conditions.DiscountBase.objects.all(),

        required=False,

class ProductAndCategoryForm(forms.Form):

    product = forms.ModelMultipleChoiceField(

        queryset=inventory.Product.objects.select_related("category"),

        required=False,

class UserIdForm(forms.Form):

    user = forms.IntegerField(

        label="User ID",

        required=False,

class ProposalKindForm(forms.Form):

    kind = forms.ModelMultipleChoiceField(

        queryset=proposals_models.ProposalKind.objects.all(),

        required=False,

class GroupByForm(forms.Form):

    GROUP_BY_CATEGORY = "category"

    GROUP_BY_PRODUCT = "product"