From 0cecc168b6d19590b2fe4d34ed92ab91c1df081c Mon Sep 17 00:00:00 2001
From: Raphael Michel <mail@raphaelmichel.de>
Date: Mon, 5 Jun 2017 19:28:52 +0200
Subject: [PATCH] Autocompletion in event selection

---
 src/pretix/control/middleware.py              |  2 -
 .../control/templates/pretixcontrol/base.html | 38 ++++----
 src/pretix/control/urls.py                    |  3 +-
 src/pretix/control/views/dashboards.py        |  2 +-
 src/pretix/control/views/typeahead.py         | 32 +++++++
 .../static/pretixcontrol/js/ui/typeahead.js   | 93 +++++++++++++++++++
 .../static/pretixcontrol/scss/main.scss       | 25 +++++
 7 files changed, 172 insertions(+), 23 deletions(-)
 create mode 100644 src/pretix/control/views/typeahead.py
 create mode 100644 src/pretix/static/pretixcontrol/js/ui/typeahead.js

diff --git a/src/pretix/control/middleware.py b/src/pretix/control/middleware.py
index 2e8bcf15cb..2870a2f224 100644
--- a/src/pretix/control/middleware.py
+++ b/src/pretix/control/middleware.py
@@ -59,8 +59,6 @@ class PermissionMiddleware(MiddlewareMixin):
             return redirect_to_login(
                 path, resolved_login_url, REDIRECT_FIELD_NAME)
 
-        events = request.user.get_events_with_any_permission()
-        request.user.events_cache = events.order_by("organizer", "date_from").prefetch_related("organizer")
         if 'event' in url.kwargs and 'organizer' in url.kwargs:
             request.event = Event.objects.filter(
                 slug=url.kwargs['event'],
diff --git a/src/pretix/control/templates/pretixcontrol/base.html b/src/pretix/control/templates/pretixcontrol/base.html
index dc88f83778..db78d0482c 100644
--- a/src/pretix/control/templates/pretixcontrol/base.html
+++ b/src/pretix/control/templates/pretixcontrol/base.html
@@ -34,6 +34,7 @@
             <script type="text/javascript" src="{% static "pretixcontrol/js/ui/quota.js" %}"></script>
             <script type="text/javascript" src="{% static "pretixcontrol/js/ui/question.js" %}"></script>
             <script type="text/javascript" src="{% static "pretixcontrol/js/ui/mail.js" %}"></script>
+            <script type="text/javascript" src="{% static "pretixcontrol/js/ui/typeahead.js" %}"></script>
             <script type="text/javascript" src="{% static "pretixbase/js/asynctask.js" %}"></script>
             <script type="text/javascript" src="{% static "pretixbase/js/asyncdownload.js" %}"></script>
             <script type="text/javascript" src="{% static "colorpicker/bootstrap-colorpicker.js" %}"></script>
@@ -69,15 +70,15 @@
                         <a href="#" class="dropdown-toggle" data-toggle="dropdown"><i class="fa fa-calendar"></i>
                             <span class="event-name">{{ request.event }}</span>
                             <span class="caret"></span></a>
-                        <ul class="dropdown-menu" role="menu">
-                            <li><a href="{% url "control:events" %}">{% trans "Events overview" %}</a></li>
-                            {% regroup request.user.events_cache by organizer as event_list %}
-                            {% for g in event_list %}
-                                <li class="dropdown-header">{{ g.grouper }}</li>
-                                {% for e in g.list %}
-                                    <li><a href="{% url "control:event.index" organizer=g.grouper.slug event=e.slug %}">{{ e.name }}</a></li>
-                                {% endfor %}
-                            {% endfor %}
+                        <ul class="dropdown-menu event-dropdown" role="menu" data-event-typeahead
+                            data-source="{% url "control:events.typeahead" %}">
+                            <li>
+                                <div class="form-box">
+                                    <input type="text" class="form-control"
+                                            placeholder="{% trans "Search for events" %}"
+                                            data-typeahead-query>
+                                </div>
+                            </li>
                         </ul>
                     </li>
                     {% if request.event %}
@@ -147,16 +148,15 @@
                     </li>
                 </ul>
                 <div class="navbar-default sidebar" role="navigation">
-                    <div class="sidebar-nav navbar-events-collapse navbar-collapse hidden-sm hidden-md hidden-lg">
-                        <ul class="nav">
-                            <li><a href="{% url "control:events" %}">{% trans "Event overview" %}</a></li>
-                            {% for e in request.user.events_cache %}
-                                <li>
-                                    <a href="{% url "control:event.index" organizer=e.organizer.slug event=e.slug %}">
-                                        {{ e.name }}
-                                    </a>
-                                </li>
-                            {% endfor %}
+                    <div class="sidebar-nav navbar-events-collapse navbar-collapse hidden-sm hidden-md hidden-lg mobile-event-dropdown">
+                        <ul class="nav" data-event-typeahead data-source="{% url "control:events.typeahead" %}">
+                            <li>
+                                <div class="form-box">
+                                    <input type="text" class="form-control"
+                                            placeholder="{% trans "Search for events" %}"
+                                            data-typeahead-query>
+                                </div>
+                            </li>
                         </ul>
                     </div>
                     <div class="sidebar-nav navbar-nav-collapse navbar-collapse">
diff --git a/src/pretix/control/urls.py b/src/pretix/control/urls.py
index f5479dc909..5551775fbd 100644
--- a/src/pretix/control/urls.py
+++ b/src/pretix/control/urls.py
@@ -2,7 +2,7 @@ from django.conf.urls import include, url
 
 from pretix.control.views import (
     auth, checkin, dashboards, event, global_settings, item, main, orders,
-    organizer, user, vouchers, waitinglist,
+    organizer, typeahead, user, vouchers, waitinglist,
 )
 
 urlpatterns = [
@@ -45,6 +45,7 @@ urlpatterns = [
         name='organizer.team.delete'),
     url(r'^events/$', main.EventList.as_view(), name='events'),
     url(r'^events/add$', main.EventWizard.as_view(), name='events.add'),
+    url(r'^events/typeahead/$', typeahead.event_list, name='events.typeahead'),
     url(r'^event/(?P<organizer>[^/]+)/(?P<event>[^/]+)/', include([
         url(r'^$', dashboards.event_index, name='event.index'),
         url(r'^live/$', event.EventLive.as_view(), name='event.live'),
diff --git a/src/pretix/control/views/dashboards.py b/src/pretix/control/views/dashboards.py
index ddd9be19a2..7d9be19b1f 100644
--- a/src/pretix/control/views/dashboards.py
+++ b/src/pretix/control/views/dashboards.py
@@ -252,7 +252,7 @@ def user_event_widgets(**kwargs):
     user = kwargs.pop('user')
     widgets = []
 
-    events = user.get_events_with_any_permission().order_by('-date_from', 'name').select_related('organizer')
+    events = user.get_events_with_any_permission().order_by('-date_from', 'name').select_related('organizer')[:100]
     for event in events:
         widgets.append({
             'content': '<div class="event">{event}<span class="from">{df}</span><span class="to">{dt}</span></div>'.format(
diff --git a/src/pretix/control/views/typeahead.py b/src/pretix/control/views/typeahead.py
new file mode 100644
index 0000000000..6807d7dd2a
--- /dev/null
+++ b/src/pretix/control/views/typeahead.py
@@ -0,0 +1,32 @@
+import json
+
+from django.db.models import Q
+from django.http import JsonResponse
+from django.urls import reverse
+
+
+def i18ncomp(query):
+    return json.dumps(str(query))[1:-1]
+
+
+def event_list(request):
+    query = request.GET.get('query', '')
+    qs = request.user.get_events_with_any_permission().filter(
+        Q(name__icontains=i18ncomp(query)) | Q(slug__icontains=query) |
+        Q(organizer__name__icontains=i18ncomp(query)) | Q(organizer__slug__icontains=query)
+    ).order_by('-date_from')
+    doc = {
+        'results': [
+            {
+                'slug': e.slug,
+                'organizer': str(e.organizer.name),
+                'name': str(e.name),
+                'date_range': e.get_date_range_display(),
+                'url': reverse('control:event.index', kwargs={
+                    'event': e.slug,
+                    'organizer': e.organizer.slug
+                })
+            } for e in qs.select_related('organizer')[:10]
+        ]
+    }
+    return JsonResponse(doc)
diff --git a/src/pretix/static/pretixcontrol/js/ui/typeahead.js b/src/pretix/static/pretixcontrol/js/ui/typeahead.js
new file mode 100644
index 0000000000..c76d92daf7
--- /dev/null
+++ b/src/pretix/static/pretixcontrol/js/ui/typeahead.js
@@ -0,0 +1,93 @@
+/*global $,u2f */
+$(function () {
+    $('ul.navbar-nav .dropdown, .navbar-events-collapse').on('shown.bs.collapse shown.bs.dropdown', function () {
+        $(this).parent().find("input").val("").change().focus();
+    });
+    $('.dropdown-menu .form-box input').click(function (e) {
+        e.stopPropagation();
+    });
+
+    $("[data-event-typeahead]").each(function () {
+        var $container = $(this);
+        var $query = $(this).find('[data-typeahead-query]');
+        $query.closest("li").nextAll().remove();
+
+        $query.on("change", function () {
+            $.getJSON(
+                $container.attr("data-source") + "?query=" + encodeURIComponent($query.val()),
+                function (data) {
+                    $query.closest("li").nextAll().remove();
+                    $.each(data.results, function (i, res) {
+                        $container.append(
+                            $("<li>").append(
+                                $("<a>").attr("href", res.url).append(
+                                    $("<div>").append(
+                                        $("<span>").addClass("event-name").append(res.name)
+                                    ).append(
+                                        $("<span>").addClass("event-organizer").append(
+                                            $("<span>").addClass("fa fa-users fa-fw")
+                                        ).append(" ").append(res.organizer)
+                                    ).append(
+                                        $("<span>").addClass("event-daterange").append(
+                                            $("<span>").addClass("fa fa-calendar fa-fw")
+                                        ).append(" ").append(res.date_range)
+                                    )
+                                )
+                            )
+                        );
+                    });
+                }
+            );
+        });
+        $query.on("keydown", function (event) {
+            var $selected = $container.find(".active");
+            if (event.which === 13) {  // enter
+                var $link = $selected.find("a");
+                if ($link.length) {
+                    location.href = $link.attr("href");
+                }
+                event.preventDefault();
+                event.stopPropagation();
+            }
+        });
+        $query.on("keyup", function (event) {
+            var $first = $query.closest("li").next();
+            var $last = $query.closest("li").nextAll().last();
+            var $selected = $container.find(".active");
+
+            if (event.which === 13) {  // enter
+                event.preventDefault();
+                event.stopPropagation();
+                return true;
+            } else if (event.which === 40) {  // down
+                if ($selected.length === 0) {
+                    $selected = $query.closest("li");
+                }
+                var $next = $selected.next();
+                if ($next.length === 0) {
+                    $next = $first;
+                }
+                $selected.removeClass("active");
+                $next.addClass("active");
+                event.preventDefault();
+                event.stopPropagation();
+                return true;
+            } else if (event.which === 38) {  // up
+                if ($selected.length === 0) {
+                    $selected = $container.first();
+                }
+                var $prev = $selected.prev();
+                if ($prev.length === 0 || $prev.find("input").length > 0) {
+                    $prev = $last;
+                }
+                $selected.removeClass("active");
+                $prev.addClass("active");
+                event.preventDefault();
+                event.stopPropagation();
+                return true;
+            } else {
+                $(this).change();
+            }
+        });
+    });
+});
diff --git a/src/pretix/static/pretixcontrol/scss/main.scss b/src/pretix/static/pretixcontrol/scss/main.scss
index 11bc9c1d62..60714a5a2a 100644
--- a/src/pretix/static/pretixcontrol/scss/main.scss
+++ b/src/pretix/static/pretixcontrol/scss/main.scss
@@ -297,3 +297,28 @@ body.loading #wrapper {
     text-overflow: ellipsis;
     vertical-align: bottom;
 }
+
+.dropdown-menu .form-box {
+    padding: 3px 10px;
+}
+
+.event-dropdown {
+    width: 300px;
+}
+.event-dropdown, .mobile-event-dropdown {
+    .event-name {
+        display: block;
+    }
+    .event-daterange, .event-organizer {
+        display: block;
+        font-size: $font-size-small;
+        color: $text-muted;
+    }
+    .active .event-daterange, .active .event-organizer, .active a {
+        color: white;
+    }
+    .active {
+        background: $brand-primary;
+        color: white;
+    }
+}