rewrite icon template logic

app/components/broadcast-tower.coffee

@@ -7,10 +7,6 @@ BroadcastTowerComponent = Ember.Component.extend
   isOpen: false
   timeoutId: ''
 
-  isEmpty: (->
-    @get('status') == ''
-  ).property('status')
-
   actions:
     toggleBroadcasts:() ->
       @toggleProperty('isOpen')

app/styles/app/layouts/broadcasts.sass

@@ -102,6 +102,9 @@
     overflow: visible
   .tower-path
     fill: #AEAEAE
+  .radio-wave--right,
+  .radio-wave--left
+    display: none
   &:hover,
   &.is-open
     .tower-path
@@ -123,6 +126,12 @@
       .tower-path
         fill: #238C3E
 
+  &.announcement,
+  &.warning
+    .radio-wave--right,
+    .radio-wave--left
+      display: block
+
   .radio-wave--right
     .tower-path
       transform-origin: left center

app/templates/components/broadcast-tower.hbs

@@ -1,18 +1,5 @@
 <span class="icon-broadcast {{status}} {{if isOpen 'is-open'}}" title="broadcasts" {{action 'toggleBroadcasts'}}>
 
-  {{#if isEmpty}}
-    <svg version="1.1" id="Layer_1" x="0px" y="0px"
-       viewBox="-1 0 16 25" xml:space="preserve">
-    <g>
-      <path class="tower-path" d="M0.989,18.732l0.92-2.247l3.926,0.663V20h0.868l-0.001-2.852l3.926-0.663l0.92,2.247h0.989L8.167,8.078
-        H7.183l0.004,0.011H5.351l0.004-0.011H4.37L0,18.732H0.989z M6.702,16.288l-0.003-3.877l2.461,0.492l1.131,2.759L6.702,16.288z
-         M2.246,15.662l1.131-2.759l2.459-0.492l-0.001,3.877L2.246,15.662z M8.794,12.015l-2.095-0.483L6.698,8.92h0.827L8.794,12.015z
-         M5.836,8.92v2.612l-2.093,0.482L5.012,8.92H5.836z"/>
-      <path class="tower-path" d="M6.246,6.437c1.082,0,1.962-0.88,1.962-1.964c0-1.085-0.88-1.964-1.962-1.964
-        c-1.087,0-1.966,0.879-1.966,1.964C4.28,5.557,5.159,6.437,6.246,6.437z"/>
-    </g>
-    </svg>
-  {{else}}
   <svg version="1.1" id="Layer_1" x="0px" y="0px"
      viewBox="-1 0 16 25" xml:space="preserve">
   <g>
@@ -36,6 +23,5 @@
       c-1.087,0-1.966,0.879-1.966,1.964C4.28,5.557,5.159,6.437,6.246,6.437z"/>
   </g>
   </svg>
-  {{/if}}
 
 </span>