Handle cancelation of scheduled events

app/assets/stylesheets/osem-schedule.css.scss

@@ -193,6 +193,14 @@ td.no-padding{
   color:  #D8D8D8 !important;
 }
 
+.schedule-label{
+  height: 14px;
+  line-height: 11px;
+  overflow: hidden;
+  display: inline-block;
+  white-space: normal;
+}
+
 /* Small devices (tablets, 768px and up) */
 @media (min-width: 768px) {
   .room, .event-title{
@@ -227,6 +235,11 @@ td.no-padding{
   td.event{
     padding: 3px 5px !important;
   }
+
+  .schedule-label{
+    height: 15px;
+    line-height: 12px;
+  }
 }
 
 /* Large devices (large desktops, 1200px and up) */

app/models/event.rb

@@ -38,6 +38,8 @@ class Event < ActiveRecord::Base
   validate :max_attendees_no_more_than_room_size
 
   scope :confirmed, -> { where(state: 'confirmed') }
+  scope :canceled, -> { where(state: 'canceled') }
+  scope :withdrawn, -> { where(state: 'withdrawn') }
   scope :highlighted, -> { where(is_highlight: true) }
 
   state_machine initial: :new do
@@ -230,6 +232,13 @@ class Event < ActiveRecord::Base
     self.start_time + self.event_type.length.minutes
   end
 
+  ##
+  # Returns events that are scheduled in the same room and start_time as event
+  #
+  def intersecting_events
+    room.events.where(start_time: start_time).where.not(id: id)
+  end
+
   private
 
   ##

app/views/conference/_carousel.html.haml

@@ -33,6 +33,11 @@
                     - span -= 1
                   - else
                     - event = events.find{|e| e.start_time <= start_room_time and e.end_time > start_room_time}
+
+                    - if event && (event.state == 'canceled' || event.state == 'withdrawn') && !event.intersecting_events.confirmed.empty?
+                      - replacement_event = event.intersecting_events.confirmed.first
+                      - event = (replacement_event.start_time <= start_room_time && replacement_event.end_time > start_room_time) ? replacement_event : nil
+
                     - if event
                       / There is an event, calculate the span and show it
                       - event_span =  (event.end_time.to_i - start_room_time.to_i) / 60 / EventType::LENGTH_STEP

app/views/conference/_schedule_item.html.haml

@@ -4,7 +4,14 @@
   %a.unstyled-link{href: url_for(conference_program_proposal_path(@conference.short_title, event.id))}
     %div{ class: "elipsis break-words event-title", |
           style: "-webkit-line-clamp: #{ event_lines(@rooms) }; height: #{ event_height(@rooms) }px;"} |
+
+      - if event.state == 'canceled' || event.state == 'withdrawn'
+        %span.label.label-danger.schedule-label CANCELED
+      - elsif event.state == 'confirmed' && (!event.intersecting_events.canceled.empty? || !event.intersecting_events.withdrawn.empty?)
+        %span.label.label-info.schedule-label REPLACEMENT
+
       = event.title
+
     - if speaker = event.speakers.first
       = image_tag speaker.gravatar_url, :class => "img-circle pull-right speaker-pic", |
                                         :alt => speaker.name, |

app/views/proposal/show.html.haml

@@ -14,6 +14,12 @@
             = link_to "Edit", edit_conference_program_proposal_path(@conference.short_title, @event), :class => "btn btn-mini btn-primary"
           - if can? :schedule, @conference
             = link_to "Schedule", schedule_conference_path(@conference.short_title), :class =>"btn btn-success"
+
+      - if @event.state == 'canceled' || @event.state == 'withdrawn'
+        %span.label.label-danger CANCELED
+      - elsif @event.state == 'confirmed' && (!@event.intersecting_events.canceled.empty? || !@event.intersecting_events.withdrawn.empty?)
+        %span.label.label-info REPLACEMENT
+
   .row
     .col-md-3
       .speakerinfo
@@ -34,6 +40,16 @@
     .col-md-9
       .row
         .col-md-12
+          .lead
+            - if @event.state == 'confirmed' && !@event.intersecting_events.withdrawn.empty?
+              = "Please note that this talk replaces"
+              = link_to @event.intersecting_events.withdrawn.first.title,
+                    conference_program_proposal_path(@conference.short_title, @event.intersecting_events.withdrawn.first.id)
+            - elsif @event.state == 'confirmed' && !@event.intersecting_events.canceled.empty?
+              = "Please note that this talk replaces"
+              = link_to @event.intersecting_events.canceled.first.title,
+                    conference_program_proposal_path(@conference.short_title, @event.intersecting_events.canceled.first.id)
+
           - if @event.commercials.empty?
             %h5.text-warning
               No video of the event yet, sorry!