From 2e8c6e1425c9914e7485c2b30a4a1395f7512c86 Mon Sep 17 00:00:00 2001
From: Sesostris Vieira <sesostris@interlegis.leg.br>
Date: Wed, 4 Nov 2015 12:14:32 -0200
Subject: [PATCH] Add smart pagination displayer templatetag

---
 .../home/templates/pagination/paginator.html  | 35 ++++++++++++
 .../home/templatetags/smart_pagination.py     | 55 +++++++++++++++++++
 2 files changed, 90 insertions(+)
 create mode 100644 sigi/apps/home/templates/pagination/paginator.html
 create mode 100644 sigi/apps/home/templatetags/smart_pagination.py

diff --git a/sigi/apps/home/templates/pagination/paginator.html b/sigi/apps/home/templates/pagination/paginator.html
new file mode 100644
index 0000000..7bf1220
--- /dev/null
+++ b/sigi/apps/home/templates/pagination/paginator.html
@@ -0,0 +1,35 @@
+<div class="center-block">
+  <nav>
+    <ul class="pagination">
+      {% if page_obj.has_previous %}
+        <li>
+          <a href="{{ querystring }}page={{ page_obj.previous_page_number }}">
+            <span class="arrow">&laquo;</span>
+          </a>
+        </li>
+      {% else %}
+        <li class="arrow disabled"><span class="arrow">&laquo;</span></li>
+      {% endif %}
+
+      {% for page in page_range %}
+      	{% if page %}
+	      <li {% if page == page_obj.number %}class="active current"{% endif %}>
+	        <a href="{{ querystring }}page={{ page }}">{{ page }}</a>
+	      </li>
+	    {% else %}
+	      <li class="disabled" aria-disabled="true"><span>&hellip;</span></li>
+	    {% endif %}
+      {% endfor %}
+
+      {% if page_obj.has_next %}
+        <li>
+          <a href="{{ querystring }}page={{ page_obj.next_page_number }}">
+            <span class="arrow">&raquo;</span>
+          </a>
+        </li>
+      {% else %}
+        <li class="arrow disabled"><span class="arrow">&raquo;</span></li>
+      {% endif %}
+    </ul>
+  </nav>
+</div>
diff --git a/sigi/apps/home/templatetags/smart_pagination.py b/sigi/apps/home/templatetags/smart_pagination.py
new file mode 100644
index 0000000..4dcbca2
--- /dev/null
+++ b/sigi/apps/home/templatetags/smart_pagination.py
@@ -0,0 +1,55 @@
+# -*- coding: utf-8 -*-
+#
+# sigi.apps.home.templatetags.smart_pagination
+#
+# Copyright (C) 2015  Interlegis
+# 
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+from django import template
+
+register = template.Library()
+
+@register.inclusion_tag('pagination/paginator.html')
+def smart_paginator(page_obj, querystring=None):
+    if querystring:
+        querystring = '?' + querystring + '&'
+    else:
+        querystring = '?'
+        
+    page_range = page_obj.paginator.page_range
+    mid = len(page_range) / 2
+    
+    range = list(set(page_range[:3]) | set(page_range[mid-2:mid+1]) | set(page_range[-3:]) |
+                      set(page_range[page_obj.number-2:page_obj.number+1]))
+    range.sort()
+    
+    last = range[0]-1
+    page_range = []
+    
+    for p in range:
+        if p-1 != last:
+            if p-2 == last:
+                page_range.append(p-1)
+            else:
+                page_range.append(None)
+        page_range.append(p)
+        last = p 
+    
+    return dict(page_obj=page_obj, querystring=querystring, page_range=page_range)
+
+@register.inclusion_tag('menus/menu_item.html')
+def show_menu_item(menu_item, base_url):
+    return dict(menu_item=menu_item, base_url=base_url)