Enable keyboard shortcuts for chrome://extensions

chrome/browser/resources/extensions/extension_list.js

Index: chrome/browser/resources/extensions/extension_list.js
diff --git a/chrome/browser/resources/extensions/extension_list.js b/chrome/browser/resources/extensions/extension_list.js
index 6083af00dab721f0be646524f37501d0e7fdf0bd..cbef72556f07752e55076f707fddf8d4f73052b4 100644
--- a/chrome/browser/resources/extensions/extension_list.js
+++ b/chrome/browser/resources/extensions/extension_list.js
@@ -65,6 +65,137 @@
  */
 var ExtensionData;
 
+///////////////////////////////////////////////////////////////////////////////
+// ExtensionFocusRow:
+
+/**
+ * Provides an implementation for a single column grid.
+ * @constructor
+ * @extends {cr.ui.FocusRow}
+ */
+function ExtensionFocusRow() {}
+
+/**
+ * Decorates |focusRow| so that it can be treated as a ExtensionFocusRow.
+ * @param {Element} focusRow The element that has all the columns.
+ * @param {Node} boundary Focus events are ignored outside of this node.
+ */
+ExtensionFocusRow.decorate = function(focusRow, boundary) {
+  focusRow.__proto__ = ExtensionFocusRow.prototype;
+  focusRow.decorate(boundary);
+};
+
+ExtensionFocusRow.prototype = {
+  __proto__: cr.ui.FocusRow.prototype,
+
+  /** @override */
+  getEquivalentElement: function(element) {
+    if (this.focusableElements.indexOf(element) > -1)
+      return element;
+
+    // All elements default to another element with the same type.
+    var columnType = element.getAttribute('column-type');
+    var equivalent = this.querySelector('[column-type=' + columnType + ']');
+
+    if (!equivalent || !this.canAddElement_(equivalent)) {
+      var actionLinks = ['options', 'website', 'launch', 'localReload'];
+      var optionalControls = ['showButton', 'incognito', 'dev-collectErrors',
+                              'allUrls', 'localUrls'];
+      var removeStyleButtons = ['trash', 'enterprise'];
+      var enableControls = ['terminatedReload', 'repair', 'enabled'];
+
+      if (actionLinks.indexOf(columnType) > -1)
+        equivalent = this.getFirstFocusableByType_(actionLinks);
+      else if (optionalControls.indexOf(columnType) > -1)
+        equivalent = this.getFirstFocusableByType_(optionalControls);
+      else if (removeStyleButtons.indexOf(columnType) > -1)
+        equivalent = this.getFirstFocusableByType_(removeStyleButtons);
+      else if (enableControls.indexOf(columnType) > -1)
+        equivalent = this.getFirstFocusableByType_(enableControls);
+    }
+
+    // Return the first focusable element if no equivalent type is found.
+    return equivalent || this.focusableElements[0];
+  },
+
+  /** Updates the list of focusable elements. */
+  updateFocusableElements: function() {
+    this.focusableElements.length = 0;
+
+    var focusableCandidates = this.querySelectorAll('[column-type]');
+    for (var i = 0; i < focusableCandidates.length; ++i) {
+      var element = focusableCandidates[i];
+      if (this.canAddElement_(element))
+        this.addFocusableElement(element);
+    }
+  },
+
+  /**
+   * Get the first focusable element that matches a list of types.
+   * @param {Array<string>} types An array of types to match from.
+   * @return {?Element} Return the first element that matches a type in |types|.
+   * @private
+   */
+  getFirstFocusableByType_: function(types) {
+    for (var i = 0; i < this.focusableElements.length; ++i) {
+      var element = this.focusableElements[i];
+      if (types.indexOf(element.getAttribute('column-type')) > -1)
+        return element;
+    }
+    return null;
+  },
+
+  /**
+   * Setup a typical column in the ExtensionFocusRow. A column can be any
+   * element and should have an action when clicked/toggled. This function
+   * adds a listener and a handler for an event. Also adds the "column-type"
+   * attribute to make the element focusable in |updateFocusableElements|.
+   * @param {string} query A query to select the element to set up.
+   * @param {string} columnType A tag used to identify the column when
+   *     changing focus.
+   * @param {string} eventType The type of event to listen to.
+   * @param {function(Event)} handler The function that should be called
+   *     by the event.
+   * @private
+   */
+  setupColumn: function(query, columnType, eventType, handler) {
+    var element = this.querySelector(query);
+    element.addEventListener(eventType, handler);
+    element.setAttribute('column-type', columnType);
+  },
+
+  /**
+   * @param {Element} element
+   * @return {boolean}
+   * @private
+   */
+  canAddElement_: function(element) {
+    if (!element || element.disabled)
+      return false;
+
+    var developerMode = $('extension-settings').classList.contains('dev-mode');
+    if (this.isDeveloperOption_(element) && !developerMode)
+      return false;
+
+    for (var el = element; el; el = el.parentElement) {
+      if (el.hidden)
+        return false;
+    }
+
+    return true;
+  },
+
+  /**
+   * Returns true if the element should only be shown in developer mode.
+   * @param {Element} element
+   * @return {boolean}
+   * @private
+   */
+  isDeveloperOption_: function(element) {
+    return /^dev-/.test(element.getAttribute('column-type'));
+  },
+};
+
 cr.define('options', function() {
   'use strict';
 
@@ -96,6 +227,9 @@ cr.define('options', function() {
      */
     optionsShown_: false,
 
+    /** @private {!cr.ui.FocusGrid} */
+    focusGrid_: new cr.ui.FocusGrid(),
+
     /**
      * Necessary to only show the butterbar once.
      * @private {boolean}
@@ -115,10 +249,13 @@ cr.define('options', function() {
     },
 
     /**
-     * Creates all extension items from scratch.
+     * Creates or updates all extension items from scratch.
      * @private
      */
     showExtensionNodes_: function() {
+      // Remove the rows from |focusGrid_| without destroying them.
+      this.focusGrid_.rows.length = 0;
+
       // Any node that is not updated will be removed.
       var seenIds = [];
 
@@ -138,8 +275,11 @@ cr.define('options', function() {
       var nodes = document.querySelectorAll('.extension-list-item-wrapper[id]');
       for (var i = 0; i < nodes.length; ++i) {
         var node = nodes[i];
-        if (seenIds.indexOf(node.id) < 0)
+        if (seenIds.indexOf(node.id) < 0) {
           node.parentElement.removeChild(node);
+          // Unregister the removed node from events.
+          node.destroy();
+        }
       }
 
       var idToHighlight = this.getIdQueryParam_();
@@ -154,6 +294,14 @@ cr.define('options', function() {
       this.classList.toggle('empty-extension-list', noExtensions);
     },
 
+    /** Updates each row's focusable elements without rebuilding the grid. */
+    updateFocusableElements: function() {
+      var rows = document.querySelectorAll('.extension-list-item-wrapper[id]');
+      for (var i = 0; i < rows.length; ++i) {
+        rows[i].updateFocusableElements();
+      }
+    },
+
     /**
      * Scrolls the page down to the extension node with the given id.
      * @param {string} extensionId The id of the extension to scroll to.
@@ -173,7 +321,7 @@ cr.define('options', function() {
     /**
      * Synthesizes and initializes an HTML element for the extension metadata
      * given in |extension|.
-     * @param {ExtensionData} extension A dictionary of extension metadata.
+     * @param {!ExtensionData} extension A dictionary of extension metadata.
      * @param {?Element} nextNode |node| should be inserted before |nextNode|.
      *     |node| will be appended to the end if |nextNode| is null.
      * @private
@@ -182,17 +330,20 @@ cr.define('options', function() {
       var template = $('template-collection').querySelector(
           '.extension-list-item-wrapper');
       var node = template.cloneNode(true);
-      node.id = extension.id;
+      ExtensionFocusRow.decorate(node, $('extension-settings-list'));
+
+      var row = assertInstanceof(node, ExtensionFocusRow);
+      row.id = extension.id;
 
       // The 'Show Browser Action' button.
-      this.addListener_('click', node, '.show-button', function(e) {
+      row.setupColumn('.show-button', 'showButton', 'click', function(e) {
         chrome.send('extensionSettingsShowButton', [extension.id]);
       });
 
       // The 'allow in incognito' checkbox.
-      this.addListener_('change', node, '.incognito-control input',
-                        function(e) {
-        var butterBar = node.querySelector('.butter-bar');
+      row.setupColumn('.incognito-control input', 'incognito', 'change',
+                      function(e) {
+        var butterBar = row.querySelector('.butter-bar');
         var checked = e.target.checked;
         if (!this.butterbarShown_) {
           butterBar.hidden = !checked || extension.is_hosted_app;
@@ -206,8 +357,8 @@ cr.define('options', function() {
       // The 'collect errors' checkbox. This should only be visible if the
       // error console is enabled - we can detect this by the existence of the
       // |errorCollectionEnabled| property.
-      this.addListener_('change', node, '.error-collection-control input',
-                        function(e) {
+      row.setupColumn('.error-collection-control input', 'dev-collectErrors',
+                      'change', function(e) {
         chrome.send('extensionSettingsEnableErrorCollection',
                     [extension.id, String(e.target.checked)]);
       });
@@ -215,13 +366,15 @@ cr.define('options', function() {
       // The 'allow on all urls' checkbox. This should only be visible if
       // active script restrictions are enabled. If they are not enabled, no
       // extensions should want all urls.
-      this.addListener_('click', node, '.all-urls-control', function(e) {
+      row.setupColumn('.all-urls-control input', 'allUrls', 'click',
+                      function(e) {
         chrome.send('extensionSettingsAllowOnAllUrls',
                     [extension.id, String(e.target.checked)]);
       });
 
       // The 'allow file:// access' checkbox.
-      this.addListener_('click', node, '.file-access-control', function(e) {
+      row.setupColumn('.file-access-control input', 'localUrls', 'click',
+                      function(e) {
         chrome.send('extensionSettingsAllowFileAccess',
                     [extension.id, String(e.target.checked)]);
       });
@@ -230,46 +383,52 @@ cr.define('options', function() {
       // Set an href to get the correct mouse-over appearance (link,
       // footer) - but the actual link opening is done through chrome.send
       // with a preventDefault().
-      node.querySelector('.options-link').href = extension.optionsPageHref;
-      this.addListener_('click', node, '.options-link', function(e) {
+      row.querySelector('.options-link').href = extension.optionsPageHref;
+      row.setupColumn('.options-link', 'options', 'click', function(e) {
         chrome.send('extensionSettingsOptions', [extension.id]);
         e.preventDefault();
       });
 
-      this.addListener_('click', node, '.options-button', function(e) {
+      row.setupColumn('.options-button', 'options', 'click', function(e) {
         this.showEmbeddedExtensionOptions_(extension.id, false);
         e.preventDefault();
       }.bind(this));
 
+      // The 'View in Web Store/View Web Site' link.
+      row.querySelector('.site-link').setAttribute('column-type', 'website');
+
       // The 'Permissions' link.
-      this.addListener_('click', node, '.permissions-link', function(e) {
+      row.setupColumn('.permissions-link', 'details', 'click', function(e) {
         chrome.send('extensionSettingsPermissions', [extension.id]);
         e.preventDefault();
       });
 
       // The 'Reload' link.
-      this.addListener_('click', node, '.reload-link', function(e) {
+      row.setupColumn('.reload-link', 'localReload', 'click', function(e) {
         chrome.send('extensionSettingsReload', [extension.id]);
         extensionReloadedTimestamp[extension.id] = Date.now();
       });
 
       // The 'Launch' link.
-      this.addListener_('click', node, '.launch-link', function(e) {
+      row.setupColumn('.launch-link', 'launch', 'click', function(e) {
         chrome.send('extensionSettingsLaunch', [extension.id]);
       });
 
       // The 'Reload' terminated link.
-      this.addListener_('click', node, '.terminated-reload-link', function(e) {
+      row.setupColumn('.terminated-reload-link', 'terminatedReload', 'click',
+                      function(e) {
         chrome.send('extensionSettingsReload', [extension.id]);
       });
 
       // The 'Repair' corrupted link.
-      this.addListener_('click', node, '.corrupted-repair-button', function(e) {
+      row.setupColumn('.corrupted-repair-button', 'repair', 'click',
+                      function(e) {
         chrome.send('extensionSettingsRepair', [extension.id]);
       });
 
       // The 'Enabled' checkbox.
-      this.addListener_('change', node, '.enable-checkbox input', function(e) {
+      row.setupColumn('.enable-checkbox input', 'enabled', 'change',
+                      function(e) {
         var checked = e.target.checked;
         chrome.send('extensionSettingsEnable', [extension.id, String(checked)]);
 
@@ -285,36 +444,42 @@ cr.define('options', function() {
       var trashTemplate = $('template-collection').querySelector('.trash');
       var trash = trashTemplate.cloneNode(true);
       trash.title = loadTimeData.getString('extensionUninstall');
+      trash.hidden = extension.managedInstall;
+      trash.setAttribute('column-type', 'trash');
       trash.addEventListener('click', function(e) {
         chrome.send('extensionSettingsUninstall', [extension.id]);
       });
-      node.querySelector('.enable-controls').appendChild(trash);
+      row.querySelector('.enable-controls').appendChild(trash);
 
       // Developer mode ////////////////////////////////////////////////////////
 
       // The path, if provided by unpacked extension.
-      this.addListener_('click', node, '.load-path a:first-of-type',
-                        function(e) {
+      row.setupColumn('.load-path a:first-of-type', 'dev-loadPath', 'click',
+                      function(e) {
         chrome.send('extensionSettingsShowPath', [String(extension.id)]);
         e.preventDefault();
       });
 
       // Maintain the order that nodes should be in when creating as well as
-      // when adding only one new node.
-      this.insertBefore(node, nextNode);
-      this.updateNode_(extension, node);
+      // when adding only one new row.
+      this.insertBefore(row, nextNode);
+      this.updateNode_(extension, row);
     },
 
     /**
      * Updates an HTML element for the extension metadata given in |extension|.
-     * @param {ExtensionData} extension A dictionary of extension metadata.
-     * @param {Element} node The node that is being updated.
+     * @param {!ExtensionData} extension A dictionary of extension metadata.
+     * @param {!ExtensionFocusRow} row The node that is being updated.
      * @private
      */
-    updateNode_: function(extension, node) {
-      node.classList.toggle('inactive-extension',
-                            !extension.enabled || extension.terminated);
+    updateNode_: function(extension, row) {
+      var isActive = extension.enabled && !extension.terminated;
+
+      row.classList.toggle('inactive-extension', !isActive);
 
+      // Hack to keep the closure compiler happy about |remove|.
+      // TODO(hcarmona): Remove this hack when the closure compiler is updated.
+      var node = /** @type {Element} */ (row);
       node.classList.remove('policy-controlled', 'may-not-modify',
                             'may-not-remove');
       var classes = [];
@@ -329,12 +494,12 @@ cr.define('options', function() {
                  extension.updateRequiredByPolicy) {
         classes.push('may-not-modify');
       }
-      node.classList.add.apply(node.classList, classes);
+      row.classList.add.apply(row.classList, classes);
 
-      node.classList.toggle('extension-highlight',
-                            node.id == this.getIdQueryParam_());
+      row.classList.toggle('extension-highlight',
+                           row.id == this.getIdQueryParam_());
 
-      var item = node.querySelector('.extension-list-item');
+      var item = row.querySelector('.extension-list-item');
       // Prevent the image cache of extension icon by using the reloaded
       // timestamp as a query string. The timestamp is recorded when the user
       // clicks the 'Reload' link. http://crbug.com/159302.
@@ -346,62 +511,64 @@ cr.define('options', function() {
         item.style.backgroundImage = 'url(' + extension.icon + ')';
       }
 
-      this.setText_(node, '.extension-title', extension.name);
-      this.setText_(node, '.extension-version', extension.version);
-      this.setText_(node, '.location-text', extension.locationText);
-      this.setText_(node, '.blacklist-text', extension.blacklistText);
-      this.setText_(node, '.extension-description',
-                           extension.description);
+      this.setText_(row, '.extension-title', extension.name);
+      this.setText_(row, '.extension-version', extension.version);
+      this.setText_(row, '.location-text', extension.locationText);
+      this.setText_(row, '.blacklist-text', extension.blacklistText);
+      this.setText_(row, '.extension-description', extension.description);
 
       // The 'Show Browser Action' button.
-      this.updateVisibility_(node, '.show-button',
-                             extension.enable_show_button);
+      this.updateVisibility_(row, '.show-button',
+                             isActive && extension.enable_show_button);
 
       // The 'allow in incognito' checkbox.
-      this.updateVisibility_(node, '.incognito-control',
-                             this.data_.incognitoAvailable, function(item) {
+      this.updateVisibility_(row, '.incognito-control',
+                             isActive && this.data_.incognitoAvailable,
+                             function(item) {
         var incognito = item.querySelector('input');
         incognito.disabled = !extension.incognitoCanBeEnabled;
         incognito.checked = extension.enabledIncognito;
       });
 
       // Hide butterBar if incognito is not enabled for the extension.
-      var butterBar = node.querySelector('.butter-bar');
+      var butterBar = row.querySelector('.butter-bar');
       butterBar.hidden = butterBar.hidden || !extension.enabledIncognito;
 
       // The 'collect errors' checkbox. This should only be visible if the
       // error console is enabled - we can detect this by the existence of the
       // |errorCollectionEnabled| property.
-      this.updateVisibility_(node, '.error-collection-control',
-                             extension.wantsErrorCollection, function(item) {
+      this.updateVisibility_(row, '.error-collection-control',
+                             isActive && extension.wantsErrorCollection,
+                             function(item) {
         item.querySelector('input').checked = extension.errorCollectionEnabled;
       });
 
       // The 'allow on all urls' checkbox. This should only be visible if
       // active script restrictions are enabled. If they are not enabled, no
       // extensions should want all urls.
-      this.updateVisibility_(node, '.all-urls-control', extension.showAllUrls,
-                             function(item) {
+      this.updateVisibility_(row, '.all-urls-control',
+                             isActive && extension.showAllUrls, function(item) {
         item.querySelector('input').checked = extension.allowAllUrls;
       });
 
       // The 'allow file:// access' checkbox.
-      this.updateVisibility_(node, '.file-access-control',
-                             extension.wantsFileAccess, function(item) {
+      this.updateVisibility_(row, '.file-access-control',
+                             isActive && extension.wantsFileAccess,
+                             function(item) {
         item.querySelector('input').checked = extension.allowFileAccess;
       });
 
       // The 'Options' button or link, depending on its behaviour.
       var optionsEnabled = extension.enabled && !!extension.optionsUrl;
-      this.updateVisibility_(node, '.options-link', optionsEnabled &&
+      this.updateVisibility_(row, '.options-link', optionsEnabled &&
                              extension.optionsOpenInTab);
-      this.updateVisibility_(node, '.options-button', optionsEnabled &&
+      this.updateVisibility_(row, '.options-button', optionsEnabled &&
                              !extension.optionsOpenInTab);
 
       // The 'View in Web Store/View Web Site' link.
       var siteLinkEnabled = !!extension.homepageUrl &&
                             !extension.enableExtensionInfoDialog;
-      this.updateVisibility_(node, '.site-link', siteLinkEnabled,
+      this.updateVisibility_(row, '.site-link', siteLinkEnabled,
                              function(item) {
         item.href = extension.homepageUrl;
         item.textContent = loadTimeData.getString(
@@ -410,24 +577,24 @@ cr.define('options', function() {
       });
 
       // The 'Reload' link.
-      this.updateVisibility_(node, '.reload-link', extension.allow_reload);
+      this.updateVisibility_(row, '.reload-link', extension.allow_reload);
 
       // The 'Launch' link.
-      this.updateVisibility_(node, '.launch-link', extension.allow_reload &&
+      this.updateVisibility_(row, '.launch-link', extension.allow_reload &&
                              extension.is_platform_app);
 
       // The 'Reload' terminated link.
       var isTerminated = extension.terminated;
-      this.updateVisibility_(node, '.terminated-reload-link', isTerminated);
+      this.updateVisibility_(row, '.terminated-reload-link', isTerminated);
 
       // The 'Repair' corrupted link.
       var canRepair = !isTerminated && extension.corruptInstall &&
                       extension.isFromStore;
-      this.updateVisibility_(node, '.corrupted-repair-button', canRepair);
+      this.updateVisibility_(row, '.corrupted-repair-button', canRepair);
 
       // The 'Enabled' checkbox.
       var isOK = !isTerminated && !canRepair;
-      this.updateVisibility_(node, '.enable-checkbox', isOK, function(item) {
+      this.updateVisibility_(row, '.enable-checkbox', isOK, function(item) {
         var enableCheckboxDisabled = extension.managedInstall ||
                                      extension.suspiciousInstall ||
                                      extension.corruptInstall ||
@@ -438,7 +605,7 @@ cr.define('options', function() {
       });
 
       // Button for extensions controlled by policy.
-      var controlNode = node.querySelector('.enable-controls');
+      var controlNode = row.querySelector('.enable-controls');
       var indicator =
           controlNode.querySelector('.controlled-extension-indicator');
       var needsIndicator = isOK && extension.managedInstall;
@@ -451,6 +618,8 @@ cr.define('options', function() {
         indicator.setAttribute('textpolicy', textPolicy);
         indicator.image.setAttribute('aria-label', textPolicy);
         controlNode.appendChild(indicator);
+        indicator.querySelector('div').setAttribute('column-type',
+                                                    'enterprise');
       } else if (!needsIndicator && indicator) {
         controlNode.removeChild(indicator);
       }
@@ -458,11 +627,11 @@ cr.define('options', function() {
       // Developer mode ////////////////////////////////////////////////////////
 
       // First we have the id.
-      var idLabel = node.querySelector('.extension-id');
+      var idLabel = row.querySelector('.extension-id');
       idLabel.textContent = ' ' + extension.id;
 
       // Then the path, if provided by unpacked extension.
-      this.updateVisibility_(node, '.load-path', extension.isUnpacked,
+      this.updateVisibility_(row, '.load-path', extension.isUnpacked,
                              function(item) {
         item.querySelector('a:first-of-type').textContent =
             ' ' + extension.prettifiedPath;
@@ -472,27 +641,27 @@ cr.define('options', function() {
       // We would like to hide managed installed message since this
       // extension is disabled.
       var isRequired = extension.managedInstall || extension.recommendedInstall;
-      this.updateVisibility_(node, '.managed-message', isRequired &&
+      this.updateVisibility_(row, '.managed-message', isRequired &&
                              !extension.updateRequiredByPolicy);
 
       // Then the 'This isn't from the webstore, looks suspicious' message.
-      this.updateVisibility_(node, '.suspicious-install-message', !isRequired &&
+      this.updateVisibility_(row, '.suspicious-install-message', !isRequired &&
                              extension.suspiciousInstall);
 
       // Then the 'This is a corrupt extension' message.
-      this.updateVisibility_(node, '.corrupt-install-message', !isRequired &&
+      this.updateVisibility_(row, '.corrupt-install-message', !isRequired &&
                              extension.corruptInstall);
 
       // Then the 'An update required by enterprise policy' message. Note that
       // a force-installed extension might be disabled due to being outdated
       // as well.
-      this.updateVisibility_(node, '.update-required-message',
+      this.updateVisibility_(row, '.update-required-message',
                              extension.updateRequiredByPolicy);
 
       // The 'following extensions depend on this extension' list.
       var hasDependents = extension.dependentExtensions.length > 0;
-      node.classList.toggle('developer-extras', hasDependents);
-      this.updateVisibility_(node, '.dependent-extensions-message',
+      row.classList.toggle('developer-extras', hasDependents);
+      this.updateVisibility_(row, '.dependent-extensions-message',
                              hasDependents, function(item) {
         var dependentList = item.querySelector('ul');
         dependentList.textContent = '';
@@ -507,7 +676,7 @@ cr.define('options', function() {
       });
 
       // The active views.
-      this.updateVisibility_(node, '.active-views', extension.views.length > 0,
+      this.updateVisibility_(row, '.active-views', extension.views.length > 0,
                              function(item) {
         var link = item.querySelector('a');
 
@@ -545,10 +714,15 @@ cr.define('options', function() {
             item.appendChild(link);
           }
         });
+
+        var allLinks = item.querySelectorAll('a');
+        for (var i = 0; i < allLinks.length; ++i) {
+          allLinks[i].setAttribute('column-type', 'dev-activeViews' + i);
+        }
       });
 
       // The extension warnings (describing runtime issues).
-      this.updateVisibility_(node, '.extension-warnings', !!extension.warnings,
+      this.updateVisibility_(row, '.extension-warnings', !!extension.warnings,
                              function(item) {
         var warningList = item.querySelector('ul');
         warningList.textContent = '';
@@ -562,13 +736,13 @@ cr.define('options', function() {
       // errors. Otherwise, we may have install warnings. We should not have
       // both ErrorConsole errors and install warnings.
       // Errors.
-      this.updateErrors_(node.querySelector('.manifest-errors'),
-                         extension.manifestErrors);
-      this.updateErrors_(node.querySelector('.runtime-errors'),
-                         extension.runtimeErrors);
+      this.updateErrors_(row.querySelector('.manifest-errors'),
+                         'dev-manifestErrors', extension.manifestErrors);
+      this.updateErrors_(row.querySelector('.runtime-errors'),
+                         'dev-runtimeErrors', extension.runtimeErrors);
 
       // Install warnings.
-      this.updateVisibility_(node, '.install-warnings',
+      this.updateVisibility_(row, '.install-warnings',
                              !!extension.installWarnings, function(item) {
         var installWarningList = item.querySelector('ul');
         installWarningList.textContent = '';
@@ -584,25 +758,15 @@ cr.define('options', function() {
       if (location.hash.substr(1) == extension.id) {
         // Scroll beneath the fixed header so that the extension is not
         // obscured.
-        var topScroll = node.offsetTop - $('page-header').offsetHeight;
-        var pad = parseInt(window.getComputedStyle(node, null).marginTop, 10);
+        var topScroll = row.offsetTop - $('page-header').offsetHeight;
+        var pad = parseInt(window.getComputedStyle(row, null).marginTop, 10);
         if (!isNaN(pad))
           topScroll -= pad / 2;
         setScrollTopForDocument(document, topScroll);
       }
-    },
 
-    /**
-     * Adds a listener to an element.
-     * @param {string} type The type of listener to add.
-     * @param {Element} node Ancestor of the element specified by |query|.
-     * @param {string} query A query to select an element in |node|.
-     * @param {function(Event)} handler The function that should be called
-     *     on click.
-     * @private
-     */
-    addListener_: function(type, node, query, handler) {
-      node.querySelector(query).addEventListener(type, handler);
+      row.updateFocusableElements();
+      this.focusGrid_.addRow(row);
     },
 
     /**
@@ -637,17 +801,29 @@ cr.define('options', function() {
     /**
      * Updates an element to show a list of errors.
      * @param {Element} panel An element to hold the errors.
+     * @param {string} columnType A tag used to identify the column when
+     *     changing focus.
      * @param {Array<RuntimeError>|undefined} errors The errors to be displayed.
      * @private
      */
-    updateErrors_: function(panel, errors) {
+    updateErrors_: function(panel, columnType, errors) {
       // TODO(hcarmona): Look into updating the ExtensionErrorList rather than
       // rebuilding it every time.
       panel.hidden = !errors || errors.length == 0;
       panel.textContent = '';
       if (!panel.hidden) {
-        panel.appendChild(
-            new extensions.ExtensionErrorList(assertInstanceof(errors, Array)));
+        var errorList =
+            new extensions.ExtensionErrorList(assertInstanceof(errors, Array));
+
+        panel.appendChild(errorList);
+
+        var list = errorList.getListElement();
+        if (list)
+          list.setAttribute('column-type', columnType + 'list');
+
+        var button = errorList.getToggleElement();
+        if (button)
+          button.setAttribute('column-type', columnType + 'button');
       }
     },