Render animated hourglass when messages are expiring

background.html

@@ -157,6 +157,7 @@
           <div class='meta'>
             <span class='timestamp' data-timestamp={{ timestamp }}></span>
             <span class='status hide'></span>
+            <span class='timer hourglass'></span>
           </div>
       </div>
   </script>

images/hourglass_empty.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="48" height="48" viewBox="0 0 48 48"><path d="M12 5v10l9 9-9 9v10h24V33l-9-9 9-9V5H12zm20 29v5H16v-5l8-8 8 8zm-8-12l-8-8V9h16v5l-8 8z"/></svg>

images/hourglass_full.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="48" height="48" viewBox="0 0 48 48"><path d="M32 4H12v11h.02l-.02.02L20.98 24 12 32.98l.02.02H12v11h24V33h-.02l.02-.02L27.02 24 36 15.02l-.02-.02H36V4h-4z"/></svg>

js/models/messages.js

@@ -398,15 +398,25 @@
 
             this.getConversation().trigger('expired', this);
         },
+        isExpiring: function() {
+            return this.get('expireTimer') && this.get('expirationStartTimestamp');
+        },
+        msTilExpire: function() {
+              if (!this.isExpiring()) {
+                return Infinity;
+              }
+              var now = Date.now();
+              var start = this.get('expirationStartTimestamp');
+              var delta = this.get('expireTimer') * 1000;
+              var ms_from_now = start + delta - now;
+              if (ms_from_now < 0) {
+                  ms_from_now = 0;
+              }
+              return ms_from_now;
+        },
         setToExpire: function() {
-            if (this.get('expireTimer') && this.get('expirationStartTimestamp') && !this.expireTimer) {
-                var now = Date.now();
-                var start = this.get('expirationStartTimestamp');
-                var delta = this.get('expireTimer') * 1000;
-                var ms_from_now = start + delta - now;
-                if (ms_from_now < 0) {
-                    ms_from_now = 0;
-                }
+            if (this.isExpiring() && !this.expireTimer) {
+                var ms_from_now = this.msTilExpire();
                 console.log('message', this.get('sent_at'), 'expires in', ms_from_now, 'ms');
                 this.expirationTimeout = setTimeout(this.markExpired.bind(this), ms_from_now);
             }

js/views/message_view.js

@@ -33,6 +33,7 @@
             this.listenTo(this.model, 'change:errors', this.onErrorsChanged);
             this.listenTo(this.model, 'change:body', this.render);
             this.listenTo(this.model, 'change:delivered', this.renderDelivered);
+            this.listenTo(this.model, 'change:expirationStartTimestamp', this.renderExpiring);
             this.listenTo(this.model, 'change', this.renderSent);
             this.listenTo(this.model, 'change:flags change:group_update', this.renderControl);
             this.listenTo(this.model, 'destroy', this.onDestroy);
@@ -65,8 +66,11 @@
         },
         onExpired: function() {
             this.$el.addClass('expired');
-            this.$el.find('.bubble').one('webkitAnimationEnd animationend',
-                this.remove.bind(this));
+            this.$el.find('.bubble').one('webkitAnimationEnd animationend', function(e) {
+                if (e.target === this.$('.bubble')[0]) {
+                  this.remove();
+                }
+            }.bind(this));
         },
         onDestroy: function() {
             if (this.$el.hasClass('expired')) {
@@ -129,6 +133,12 @@
                 this.$el.removeClass('control');
             }
         },
+        renderExpiring: function() {
+            if (this.model.isExpiring()) {
+                this.$('.hourglass').css('animation-duration', this.model.msTilExpire()*0.001 + 's');
+                this.$el.addClass('expiring');
+            }
+        },
         render: function() {
             var contact = this.model.isIncoming() ? this.model.getContact() : null;
             this.$el.html(
@@ -156,6 +166,8 @@
             this.renderSent();
             this.renderDelivered();
             this.renderErrors();
+            this.renderExpiring();
+
             this.loadAttachments();
 
             return this;

stylesheets/_conversation.scss

@@ -395,6 +395,12 @@ li.entry .error-icon-container {
     animation: shake 0.2s linear 3;
   }
 
+  .timer { display: none; }
+  .expiring .timer {
+    display: inline-block;
+    @include hourglass(13px, 11px, #999);
+  }
+
   .control {
     .bubble {
       .content {

stylesheets/_hourglass.scss

@@ -0,0 +1,36 @@
+@mixin hourglass($width, $height, $color) {
+  display: inline-block;
+  position: relative;
+  vertical-align: text-bottom;
+  @include color-svg('/images/hourglass_full.svg', transparent);
+  background-size: 100%;
+
+  &, &:before, &:after {
+    width: $width;
+    height: $height;
+  }
+  &:before, &:after {
+    content: '';
+    display: inline-block;
+    position: absolute;
+    top: 0;
+    left: 0;
+  }
+  &:before {
+    background: $color;
+    animation: moveDown 5s linear;
+    animation-duration: inherit;
+    animation-fill-mode: forwards;
+  }
+  &:after {
+    @include color-svg('/images/hourglass_empty.svg', $color);
+  }
+  @keyframes moveDown {
+    from {
+      transform: translateY(0);
+    }
+    to   {
+      transform: translateY($height);
+    }
+  }
+}

stylesheets/manifest.css

@@ -1221,6 +1221,49 @@ li.entry .error-icon-container {
   .message-container .expired .bubble,
   .message-list .expired .bubble {
     animation: shake 0.2s linear 3; }
+  .message-container .timer,
+  .message-list .timer {
+    display: none; }
+  .message-container .expiring .timer,
+  .message-list .expiring .timer {
+    display: inline-block;
+    display: inline-block;
+    position: relative;
+    vertical-align: text-bottom;
+    -webkit-mask: url("/images/hourglass_full.svg") no-repeat center;
+    -webkit-mask-size: 100%;
+    background-color: transparent;
+    background-size: 100%; }
+    .message-container .expiring .timer, .message-container .expiring .timer:before, .message-container .expiring .timer:after,
+    .message-list .expiring .timer,
+    .message-list .expiring .timer:before,
+    .message-list .expiring .timer:after {
+      width: 13px;
+      height: 11px; }
+    .message-container .expiring .timer:before, .message-container .expiring .timer:after,
+    .message-list .expiring .timer:before,
+    .message-list .expiring .timer:after {
+      content: '';
+      display: inline-block;
+      position: absolute;
+      top: 0;
+      left: 0; }
+    .message-container .expiring .timer:before,
+    .message-list .expiring .timer:before {
+      background: #999;
+      animation: moveDown 5s linear;
+      animation-duration: inherit;
+      animation-fill-mode: forwards; }
+    .message-container .expiring .timer:after,
+    .message-list .expiring .timer:after {
+      -webkit-mask: url("/images/hourglass_empty.svg") no-repeat center;
+      -webkit-mask-size: 100%;
+      background-color: #999; }
+@keyframes moveDown {
+  from {
+    transform: translateY(0); }
+  to {
+    transform: translateY(11px); } }
   .message-container .control .bubble .content,
   .message-list .control .bubble .content {
     font-style: italic; }

stylesheets/manifest.scss

@@ -5,6 +5,7 @@
 
 // Components
   @import 'progress';
+  @import 'hourglass';
   @import 'debugLog';
   @import 'lightbox';
   @import 'recorder';