From 678b9e994a4e74fe287f3bc2515ee0e323c1bf69 Mon Sep 17 00:00:00 2001
From: David A Roberts <d@vidr.cc>
Date: Thu, 11 Aug 2016 12:21:28 +1000
Subject: [PATCH] [enh] infinite scroll

resolves #649
---
 searx/plugins/__init__.py                    |  2 ++
 searx/plugins/infinite_scroll.py             |  8 ++++++++
 searx/static/plugins/css/infinite_scroll.css | 16 ++++++++++++++++
 searx/static/plugins/js/infinite_scroll.js   | 18 ++++++++++++++++++
 4 files changed, 44 insertions(+)
 create mode 100644 searx/plugins/infinite_scroll.py
 create mode 100644 searx/static/plugins/css/infinite_scroll.css
 create mode 100644 searx/static/plugins/js/infinite_scroll.js

diff --git a/searx/plugins/__init__.py b/searx/plugins/__init__.py
index 14fd1e96..768a510a 100644
--- a/searx/plugins/__init__.py
+++ b/searx/plugins/__init__.py
@@ -21,6 +21,7 @@ logger = logger.getChild('plugins')
 
 from searx.plugins import (doai_rewrite,
                            https_rewrite,
+                           infinite_scroll,
                            open_results_on_new_tab,
                            self_info,
                            search_on_category_select,
@@ -76,6 +77,7 @@ class PluginStore():
 plugins = PluginStore()
 plugins.register(doai_rewrite)
 plugins.register(https_rewrite)
+plugins.register(infinite_scroll)
 plugins.register(open_results_on_new_tab)
 plugins.register(self_info)
 plugins.register(search_on_category_select)
diff --git a/searx/plugins/infinite_scroll.py b/searx/plugins/infinite_scroll.py
new file mode 100644
index 00000000..422a4bef
--- /dev/null
+++ b/searx/plugins/infinite_scroll.py
@@ -0,0 +1,8 @@
+from flask_babel import gettext
+
+name = gettext('Infinite scroll')
+description = gettext('Automatically load next page when scrolling to bottom of current page')
+default_on = False
+
+js_dependencies = ('plugins/js/infinite_scroll.js',)
+css_dependencies = ('plugins/css/infinite_scroll.css',)
diff --git a/searx/static/plugins/css/infinite_scroll.css b/searx/static/plugins/css/infinite_scroll.css
new file mode 100644
index 00000000..7e0ee20f
--- /dev/null
+++ b/searx/static/plugins/css/infinite_scroll.css
@@ -0,0 +1,16 @@
+@keyframes rotate-forever {
+    0%   { transform: rotate(0deg) }
+    100% { transform: rotate(360deg) }
+}
+.loading-spinner {
+    animation-duration: 0.75s;
+    animation-iteration-count: infinite;
+    animation-name: rotate-forever;
+    animation-timing-function: linear;
+    height: 30px;
+    width: 30px;
+    border: 8px solid #666;
+    border-right-color: transparent;
+    border-radius: 50% !important;
+    margin: 0 auto;
+}
diff --git a/searx/static/plugins/js/infinite_scroll.js b/searx/static/plugins/js/infinite_scroll.js
new file mode 100644
index 00000000..213f74b1
--- /dev/null
+++ b/searx/static/plugins/js/infinite_scroll.js
@@ -0,0 +1,18 @@
+$(document).ready(function() {
+    var win = $(window);
+    win.scroll(function() {
+        if ($(document).height() - win.height() == win.scrollTop()) {
+            var formData = $('#pagination form:last').serialize();
+            if (formData) {
+                $('#pagination').html('<div class="loading-spinner"></div>');
+                $.post('/', formData, function (data) {
+                    var body = $(data);
+                    $('#pagination').remove();
+                    $('#main_results').append('<hr/>');
+                    $('#main_results').append(body.find('.result'));
+                    $('#main_results').append(body.find('#pagination'));
+                });
+            }
+        }
+    });
+});