from django.utils.html import escape
from django.utils.safestring import mark_safe


def history_entry_object_link(entry):
    return mark_safe(u'<a href="%(url)s">%(label)s</a>' % {
        'url': entry.content_object.get_absolute_url() if entry.content_object else u'#',
        'label': escape(unicode(entry.content_object)) if entry.content_object else u''}
    )


def history_entry_summary(entry):
    return mark_safe(u'<a href="%(url)s">%(label)s</a>' % {
        'url': entry.get_absolute_url(),
        'label': unicode(entry.get_processed_summary())}
    )


def history_entry_type_link(entry):
    return mark_safe(u'<a href="%(url)s">%(label)s</a>' % {
        'url': entry.history_type.get_absolute_url(),
        'label': unicode(entry.history_type)}
    )