Debug UI for DOM distiller supports distillation and lists articles.

components/dom_distiller/webui/resources/about_dom_distiller.js

Index: components/dom_distiller/webui/resources/about_dom_distiller.js
diff --git a/components/dom_distiller/webui/resources/about_dom_distiller.js b/components/dom_distiller/webui/resources/about_dom_distiller.js
index f558d7fa9fb1c0bfd1961ee9a31844dfaaa309cb..4a401a9c911850f40ce38b569f7263e7a6d985d5 100644
--- a/components/dom_distiller/webui/resources/about_dom_distiller.js
+++ b/components/dom_distiller/webui/resources/about_dom_distiller.js
@@ -2,31 +2,76 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-/**
- * Callback from the backend with the list of entries to display.
- * This call will build the entries section of the DOM distiller page, or hide
- * that section if there are none to display.
- * @param {!Array.<string>} entries The entries.
- */
-function onGotEntries(entries) {
-  $('entries-section').hidden = !entries.length;
-  if (entries.length > 0) {
-    var list = document.createElement('ul');
+var domDistiller = {
+  /**
+   * Callback from the backend with the list of entries to display.
+   * This call will build the entries section of the DOM distiller page, or hide
+   * that section if there are none to display.
+   * @param {!Array.<string>} entries The entries.
+   */
+  onReceivedEntries: function(entries) {
+    $('entries-list-loading').classList.add('hidden');
+    if (!entries.length) $('entries-list').classList.add('hidden');
+
+    var list = $('entries-list');
+    domDistiller.removeAllChildren(list);
     for (var i = 0; i < entries.length; i++) {
       var listItem = document.createElement('li');
       var link = document.createElement('a');
+      var entry_id = entries[i].entry_id;
+      link.setAttribute('id', 'entry-' + entry_id);
+      link.setAttribute('href', '#');
       link.innerText = entries[i].title;
-      link.setAttribute('href', entries[i].url);
+      link.addEventListener('click', function(event) {
+        domDistiller.onSelectArticle(event.target.id.substr("entry-".length));
+      }, true);
       listItem.appendChild(link);
       list.appendChild(listItem);
     }
-    $('entries-list').appendChild(list);
-  }
-}
+  },
+
+  /**
+   * Callback from the backend when adding an article failed.
+   */
+  onArticleAddFailed: function() {
+    $('add-entry-error').classList.remove('hidden');
+  },
+
+  removeAllChildren: function(root) {
+    while(root.firstChild) {
+      root.removeChild(root.firstChild);
+    }
+  },
+
+  onAddArticle: function() {
+    $('add-entry-error').classList.add('hidden');
+    var url = $('article_url').value;
+    chrome.send('addArticle', [url]);
+  },
+
+  onSelectArticle: function(articleId) {
+    chrome.send('selectArticle', [articleId]);
+  },
+
+  /* All the work we do on load. */
+  onLoadWork: function() {
+    $('list-section').classList.remove('hidden');
+    $('entries-list-loading').classList.add('hidden');
+    $('add-entry-error').classList.add('hidden');
+
+    $('refreshbutton').addEventListener('click', function(event) {
+      domDistiller.onRequestEntries();
+    }, false);
+    $('addbutton').addEventListener('click', function(event) {
+      domDistiller.onAddArticle();
+    }, false);
+    domDistiller.onRequestEntries();
+  },
 
-/* All the work we do on load. */
-function onLoadWork() {
-  chrome.send('requestEntries');
+  onRequestEntries: function() {
+    $('entries-list-loading').classList.remove('hidden');
+    chrome.send('requestEntries');
+  },
 }
 
-document.addEventListener('DOMContentLoaded', onLoadWork);
+document.addEventListener('DOMContentLoaded', domDistiller.onLoadWork);