"""

Some useful form widgets

"""

from django import forms

from django.core.exceptions import ValidationError

from django.forms.util import flatatt

from django.utils.html import format_html

from django.utils.encoding import force_text

from django.utils.translation import ugettext as _

import logging

logger = logging.getLogger(__name__)

class SemanticTreeWidget(forms.TextInput):

    """

    A widget that enables to request semantic trees

    """

    class Media:

        css = {

            'all': ('semantictree/semantictree.css',)

        }

        js = ('semantictree/semantictree.js',)

    # The user can add css classes but we always add "semantic-tree" class

    def render(self, name, value, attrs=None):

        if value is None:

            value = ''

        final_attrs = self.build_attrs(attrs, type=self.input_type, name=name)

        # Test if class attr is here

        if "class" in final_attrs:

            final_attrs["class"] += " semantic-tree"

        else:

            final_attrs["class"] = "semantic-tree"

        if value != '':

            # Only add the 'value' attribute if a value is non-empty.

            final_attrs['value'] = force_text(self._format_value(value))

        final_attrs['placeholder'] = _("Search")

        input_res = format_html('<input{0} />', flatatt(final_attrs))

        if "data-url" not in final_attrs or "data-query" not in final_attrs or "data-root-query" not in final_attrs or "data-childs-query" not in final_attrs or "data-child-count-query" not in final_attrs:

            raise ValidationError(_('"data-url", "data-query", "data-root-query", "data-childs-query" and "data-child-count-query" must be set in CharField configuration'))

        dialog_text = _("Browse")

        dialog_res = "<span id=\"dialog-link-container-" + final_attrs["name"] + "\" class=\"dialog-link-container ui-state-default ui-corner-all\"><a href=\"#\" id=\"dialog-link-" + final_attrs["name"] + "\" class=\"dialog-link\" title=\"%s\">%s</a></span>" % (dialog_text,dialog_text)

        dialog_res += '<span id="dialog-' + final_attrs["name"] + '" class="dialog" title="Select term"><span id="term-tree-' + final_attrs["name"] + '"></span></span>'

        return input_res + " " + _("or") + " " + dialog_res

class SemanticTagItWidget(forms.TextInput):

    """

    A widget that enables to request semantic trees

    """

    class Media:

        css = {

            'all': ('semantictree/semantictree.css',)

        }

        js = ('semantictree/semantictree.js',)

    # The user can add css classes but we always add "semantic-tree" class

    def render(self, name, value, attrs=None):

        if value is None:

            value = ''

        final_attrs = self.build_attrs(attrs, type=self.input_type, name=name)

        # Test if class attr is here

        if "class" in final_attrs:

            final_attrs["class"] += " semantic-tree-tagit"

        else:

            final_attrs["class"] = "semantic-tree-tagit"

        if value != '':

            # Only add the 'value' attribute if a value is non-empty.

            final_attrs['value'] = force_text(self._format_value(value))

        input_res = format_html('<input{0} />', flatatt(final_attrs))

        if "data-url" not in final_attrs or "data-query" not in final_attrs or "data-root-query" not in final_attrs or "data-childs-query" not in final_attrs or "data-child-count-query" not in final_attrs:

            raise ValidationError(_('"data-url", "data-query", "data-root-query", "data-childs-query" and "data-child-count-query" must be set in CharField configuration'))

        dialog_text = _("Browse")

        dialog_res = "<span id=\"dialog-link-container-" + final_attrs["name"] + "\" class=\"dialog-link-container ui-state-default ui-corner-all\"><a href=\"#\" id=\"dialog-link-" + final_attrs["name"] + "\" class=\"dialog-link\" title=\"%s\">%s</a></span>" % (dialog_text,dialog_text)

        dialog_res += '<span id="dialog-' + final_attrs["name"] + '" class="dialog" title="Select term"><span id="term-tree-' + final_attrs["name"] + '"></span></span>'

        return input_res + " " + _("or") + " " + dialog_res