Observatory Display PC descriptors with disassembling

runtime/bin/vmservice/client/lib/src/elements/code_view.html

 <link rel="import" href="function_ref.html">
 <link rel="import" href="instance_ref.html">
 <link rel="import" href="observatory_element.html">
 <link rel="import" href="nav_bar.html">
+<link rel="import" href="script_ref.html">
 <polymer-element name="code-view" extends="observatory-element">
   <template>
-    <link rel="stylesheet" href="css/shared.css">
+    <link rel="stylesheet" href="packages/observatory/src/elements/css/shared.css">
+    <style>
+      div.flex-row:hover {
+        background-color: #FFF3E3;
+      }
+
+      .highlight {
+        background-color: #FFF3E3;
+      }
+
+      .tooltip {
+        display: block;
+        position: absolute;
+        visibility: hidden;
+        opacity: 0;
+        transition: visibility 0s linear 0.5s;
+        transition: opacity .4s ease-in-out;
+      }
+
+      .flex-row:hover .tooltip {
+        display: block;
+        position: absolute;
+        top: 100%;
+        visibility: visible;
+        z-index: 999;
+        width: auto;
+        min-width: 400px;
+        color: #ffffff;
+        background-color: #FFF3E3;
+        border-bottom-right-radius: 8px;
+        border-bottom-left-radius: 8px;
+        transition: visibility 0s linear 0.5s;
+        transition: opacity .4s ease-in-out;
+        opacity: 1;
+      }
+
+      .descriptor-address {
+        color: #0489c3;
+      }
+
+      .snippet {
+        text-align: center;
+        margin-left: 10px;
+        margin-right: 10px;
+      }
+
+    </style>
     <nav-bar>
       <top-nav-menu></top-nav-menu>
       <isolate-nav-menu isolate="{{ code.isolate }}"></isolate-nav-menu>
       <nav-menu link="." anchor="{{ code.name }}" last="{{ true }}"></nav-menu>
       <nav-refresh callback="{{ refresh }}"></nav-refresh>
     </nav-bar>
     <div class="content">
       <h1>Code for {{ code.name }}</h1>
       <div class="memberList">
         <div class="memberItem">
@@ skipping 27 matching lines @@
     <div class="content">
       <template if="{{ code.hasDisassembly }}">
         <div class="flex-row">
             <div class="flex-item-fixed-2-12 memberHeader">Inclusive</div>
             <div class="flex-item-fixed-2-12 memberHeader">Exclusive</div>
             <div class="flex-item-fixed-2-12 memberHeader">Address</div>
             <div class="flex-item-fixed-6-12 memberHeader">Disassembly</div>
         </div>
       </template>
       <template repeat="{{ instruction in code.instructions }}">
-        <div class="flex-row">
-          <div class="flex-item-fixed-2-12 monospace">{{ instruction.formattedInclusive(code) }}</div>
-          <div class="flex-item-fixed-2-12 monospace">{{ instruction.formattedExclusive(code) }}</div>
-          <div class="flex-item-fixed-2-12 monospace">{{ instruction.formattedAddress() }}</div>
-          <div class="flex-item-fixed-6-12 monospace">{{ instruction.human }}</div>
+        <div class="flex-row" on-mouseover="{{ mouseOver }}" on-mouseout="{{ mouseOut }}" data-jump-target="{{ instruction.jumpTarget.address }}" id="addr-{{ instruction.address }}" style="position: relative">
+          <template if="{{ instruction.isComment }}">
+            <div class="flex-item-fixed-2-12 monospace">{{ instruction.formattedInclusive(code) }}</div>
+            <div class="flex-item-fixed-2-12 monospace">{{ instruction.formattedExclusive(code) }}</div>
+            <div class="flex-item-fixed-8-12 monospace">{{ instruction.human }}</div>
+          </template>
+          <template if="{{ !instruction.isComment }}">
+            <div class="flex-item-fixed-2-12 monospace">{{ instruction.formattedInclusive(code) }}</div>
+            <div class="flex-item-fixed-2-12 monospace">{{ instruction.formattedExclusive(code) }}</div>
+            <template if="{{ instruction.hasDescriptors }}">
+              <div class="flex-item-fixed-2-12 monospace descriptor-address">
+                <div class="tooltip">
+                  <template repeat="{{ descriptor in instruction.descriptors }}">
+                    <div class="memberList">
+                      <div class="memberItem">
+                       <div class="memberName">Kind</div>
+                       <div class="memberValue">{{ descriptor.kind }}</div>
+                      </div>
+                      <div class="memberItem">
+                       <div class="memberName">Deoptimization ID</div>
+                       <div class="memberValue">{{ descriptor.formattedDeoptId() }}</div>
+                      </div>
+                      <template if="{{ descriptor.script != null }}">
+                        <div class="memberItem">
+                         <div class="memberName">Script</div>
+                         <div class="memberValue"><script-ref ref="{{ descriptor.script }}" pos="{{ descriptor.tokenPos }}"></script-ref></div>
+                        </div>
+                      </template>
+                    </div>
+                    <template if="{{ descriptor.script != null }}">
+                      <div class="snippet monospace">
+                        <span>{{ descriptor.formattedLine }}</span>
+                      </div>
+                    </template>
+                  </template>
+                </div>
+                {{ instruction.formattedAddress() }}
+              </div>
+            </template>
+            <template if="{{ !instruction.hasDescriptors }}">
+              <div class="flex-item-fixed-2-12 monospace">
+                {{ instruction.formattedAddress() }}
+              </div>
+            </template>
+            <div class="flex-item-fixed-6-12 monospace">
+              {{ instruction.human }}
+            </div>
+          </template>
         </div>
       </template>
     </div>
   </template>
   <script type="application/dart" src="code_view.dart"></script>
 </polymer-element>