Add ErrorConsole UI for Extension Install Warnings

chrome/browser/resources/extensions/extension_error_overlay.js

+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+cr.define('extensions', function() {
+  'use strict';
+
+  function ExtensionErrorOverlay() {
+  }
+
+  cr.addSingletonGetter(ExtensionErrorOverlay);
+
+  ExtensionErrorOverlay.prototype = {
+    /**
+     * Initialize the page.
+     */
+    initializePage: function() {
+      var overlay = $('overlay');
+      cr.ui.overlay.setupOverlay(overlay);
+      cr.ui.overlay.globalInitialization();
+      overlay.addEventListener('cancelOverlay', this.handleDismiss_.bind(this));
+
+      $('extensionErrorOverlayDismiss').addEventListener(
+          'click', this.handleDismiss_.bind(this));
+    },
+
+    /**
+     * Handles a click on the dismiss button.
+     * @param {Event} e The click event.
+     */
+    handleDismiss_: function(e) {
+      $('extensionErrorOverlayContent').innerHTML = '';
+      ExtensionSettings.showOverlay(null);
+    },
+  };
+
+  /**
+   * Called by the dom_ui_ to re-populate the page with data representing
+   * the current state of extension commands.
+   */
+  ExtensionErrorOverlay.returnExtensionsData = function(extensionsData) {
+  };
+
+  /**
+   * Called by the ExtensionErrorHandler responding to the request for a file's
+   * source. Populate the content area of the overlay and display the overlay.
+   * @param {Object} result An object with four strings - the title,
+   *     beforeHighlight, afterHighlight, and highlight. The three 'highlight'
+   *     strings represent three portions of the file's content to display - the
+   *     portion which is most relevant and should be emphasized (highlight),
+   *     and the parts both before and after this portion. These may be empty.
+   */
+  ExtensionErrorOverlay.requestFileSourceResponse = function(result) {
+    var content = $('extensionErrorOverlayContent');
+    $('extensionErrorOverlay').querySelector(
+        '.extension-error-overlay-title').innerText = result.title;
+
+    var createSpan = function(source, isHighlighted) {
+      var span = document.createElement('span');
+      span.className = isHighlighted ? 'highlighted-source' : 'normal-source';
+      source = source.replace(/ /g, '&nbsp').replace(/\n/g, '<br/>');
+      span.innerHTML = source;
+      return span;
+    };
+
+    if (result.beforeHighlight)
+      content.appendChild(createSpan(result.beforeHighlight, false));
+    if (result.highlight) {
+      var highlightSpan = createSpan(result.highlight, true);
+      highlightSpan.title = result.errorMessage;
+      content.appendChild(highlightSpan);
+    }
+    if (result.afterHighlight)
+      content.appendChild(createSpan(result.afterHighlight, false));
+
+    ExtensionSettings.showOverlay($('extensionErrorOverlay'));
+  };
+
+  // Export
+  return {
+    ExtensionErrorOverlay: ExtensionErrorOverlay
+  };
+});
+
+// Update the C++ call so this isn't necessary.
+var ExtensionErrorOverlay = extensions.ExtensionErrorOverlay;