konova/intervention/inputs.py

from django import forms
from django.urls import reverse


class DummyFilterInput(forms.HiddenInput):
    """ A dummy input widget

    Does not render anything. Can be used to keep filter logic using django_filter without having a pre defined
    filter widget being rendered to the template.

    """
    template_name = "konova/widgets/empty-dummy-input.html"


class TextToClipboardInput(forms.TextInput):
    template_name = "konova/widgets/text-to-clipboard-input.html"


class GenerateInput(forms.TextInput):
    """

    Provides a form group with a button at the end, which generates new content for the input.
    The url used to fetch new content can be added using the attrs like

    widget=GenerateInput(
        attrs={
            "url": reverse_lazy("app_name:view_name")
            ...
        }
    )

    """
    template_name = "konova/widgets/generate-content-input.html"


class TreeSelectMultiple(forms.SelectMultiple):
    """ Provides multiple selection of parent-child data

    """
    template_name = "konova/widgets/checkbox-tree-select-base.html"
    url = None

    def __init__(self, *args, **kwargs):
        self.url = kwargs.pop("url", None)
        if self.url:
            self.url = reverse(self.url)
        super().__init__(*args, **kwargs)