NUX Email: Create initial files for Email NUX.

These files were copied from Google Apps NUX and modified slightly.

Bug: 832933
Change-Id: I8fd79b2e00d2224e20c6159f478e54defaad0d73
Reviewed-on: https://chromium-review.googlesource.com/1185919Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Reviewed-by: Scott Chen <scottchen@chromium.org>
Commit-Queue: Hector Carmona <hcarmona@chromium.org>
Cr-Commit-Position: refs/heads/master@{#585534}

chrome/browser/ui/BUILD.gn

@@ -3899,7 +3899,10 @@ jumbo_split_static_library("ui") {
   }
 
   if (is_win && is_chrome_branded) {
-    deps += [ "//components/nux:google_apps_feature" ]
+    deps += [
+      "//components/nux:email_feature",
+      "//components/nux:google_apps_feature",
+    ]
   }
 
   if (enable_plugins) {

chrome/browser/ui/webui/welcome_ui.cc

@@ -25,6 +25,8 @@
 #if defined(OS_WIN) && defined(GOOGLE_CHROME_BUILD)
 #include "base/metrics/histogram_macros.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
+#include "components/nux/email/constants.h"
+#include "components/nux/email/email_handler.h"
 #include "components/nux/google_apps/constants.h"
 #include "components/nux/google_apps/google_apps_handler.h"
 #include "components/nux/show_promo_delegate.h"
@@ -111,6 +113,18 @@ WelcomeUI::WelcomeUI(content::WebUI* web_ui, const GURL& url)
   }
 
 #if defined(OS_WIN) && defined(GOOGLE_CHROME_BUILD)
+  if (base::FeatureList::IsEnabled(nux::kNuxEmailFeature)) {
+    content::BrowserContext* browser_context =
+        web_ui->GetWebContents()->GetBrowserContext();
+    web_ui->AddMessageHandler(std::make_unique<nux::EmailHandler>(
+        profile->GetPrefs(),
+        FaviconServiceFactory::GetForProfile(
+            profile, ServiceAccessType::EXPLICIT_ACCESS),
+        BookmarkModelFactory::GetForBrowserContext(browser_context)));
+
+    nux::EmailHandler::AddSources(html_source);
+  }
+
   if (base::FeatureList::IsEnabled(nux::kNuxGoogleAppsFeature)) {
     content::BrowserContext* browser_context =
         web_ui->GetWebContents()->GetBrowserContext();

components/nux/BUILD.gn

@@ -5,6 +5,34 @@
 import("//build/config/chrome_build.gni")
 
 if (is_win && is_chrome_branded) {
+  static_library("email_feature") {
+    sources = [
+      "email/constants.cc",
+      "email/constants.h",
+      "email/email_handler.cc",
+      "email/email_handler.h",
+    ]
+
+    public_deps = [
+      "//base",
+      "//net",
+      "//url",
+    ]
+
+    deps = [
+      "//components/bookmarks/browser",
+      "//components/bookmarks/common",
+      "//components/favicon/core",
+      "//components/pref_registry",
+      "//components/prefs",
+      "//components/resources",
+      "//components/strings",
+      "//components/variations",
+      "//content/public/browser",
+      "//ui/base",
+    ]
+  }
+
   static_library("google_apps_feature") {
     sources = [
       "google_apps/constants.cc",

components/nux/email/constants.cc

+// Copyright 2018 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.
+
+#include "components/nux/email/constants.h"
+
+#include "base/feature_list.h"
+
+namespace nux {
+
+extern const base::Feature kNuxEmailFeature{"NuxEmail",
+                                            base::FEATURE_DISABLED_BY_DEFAULT};
+
+extern const char kNuxEmailUrl[] = "chrome://welcome/email";
+
+}  // namespace nux
\ No newline at end of file

components/nux/email/constants.h

+// Copyright 2018 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.
+
+#ifndef COMPONENTS_NUX_EMAIL_CONSTANTS_H_
+#define COMPONENTS_NUX_EMAIL_CONSTANTS_H_
+
+namespace base {
+struct Feature;
+}  // namespace base
+
+namespace nux {
+
+extern const base::Feature kNuxEmailFeature;
+extern const char kNuxEmailUrl[];
+
+}  // namespace nux
+
+#endif  // COMPONENTS_NUX_EMAIL_CONSTANTS_H_

components/nux/email/email_handler.cc

+// Copyright 2018 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.
+
+#include "components/nux/email/email_handler.h"
+
+#include "base/bind.h"
+#include "base/metrics/field_trial_params.h"
+#include "base/metrics/histogram_macros.h"
+#include "base/stl_util.h"
+#include "base/strings/utf_string_conversions.h"
+#include "components/bookmarks/browser/bookmark_model.h"
+#include "components/bookmarks/common/bookmark_pref_names.h"
+#include "components/favicon/core/favicon_service.h"
+#include "components/grit/components_resources.h"
+#include "components/grit/components_scaled_resources.h"
+#include "components/nux/email/constants.h"
+#include "components/nux/show_promo_delegate.h"
+#include "components/prefs/pref_service.h"
+#include "components/strings/grit/components_strings.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_ui.h"
+#include "content/public/browser/web_ui_data_source.h"
+#include "ui/base/resource/resource_bundle.h"
+
+namespace nux {
+
+// These values are persisted to logs. Entries should not be renumbered and
+// numeric values should never be reused.
+enum class EmailProviders {
+  kGmail = 0,
+  kYahoo = 1,
+  kOutlook = 2,
+  kAol = 3,
+  kiCloud = 4,
+  kCount,
+};
+
+const char* kEmailInteractionHistogram =
+    "FirstRun.NewUserExperience.EmailInteraction";
+
+// Strings in costants not translated because this is an experiment.
+// Translate before wide release.
+
+constexpr const char* kEmailNames[] = {
+    "Gmail", "Yahoo", "Outlook", "AOL", "iCloud",
+};
+
+// TODO(hcarmona): get correct URLs
+constexpr const char* kEmailUrls[] = {
+    "https://gmail.com",       "https://youtube.com",
+    "https://maps.google.com", "https://translate.google.com",
+    "https://news.google.com",
+};
+
+constexpr const int kEmailIconSize = 48;  // Pixels.
+constexpr const int kEmailIcons[] = {
+    // TODO(hcarmona): populate list of icons
+};
+
+static_assert(base::size(kEmailNames) == base::size(kEmailUrls),
+              "names and urls must match");
+static_assert(base::size(kEmailNames) == (size_t)EmailProviders::kCount,
+              "names and histograms must match");
+/*static_assert(base::size(kEmailNames) == base::size(kEmailIcons),
+              "names and icons must match");*/
+
+EmailHandler::EmailHandler(PrefService* prefs,
+                           favicon::FaviconService* favicon_service,
+                           bookmarks::BookmarkModel* bookmark_model)
+    : prefs_(prefs),
+      favicon_service_(favicon_service),
+      bookmark_model_(bookmark_model) {}
+
+EmailHandler::~EmailHandler() {}
+
+void EmailHandler::RegisterMessages() {
+  web_ui()->RegisterMessageCallback(
+      "rejectEmails", base::BindRepeating(&EmailHandler::HandleRejectEmails,
+                                          base::Unretained(this)));
+
+  web_ui()->RegisterMessageCallback(
+      "addEmails", base::BindRepeating(&EmailHandler::HandleAddEmails,
+                                       base::Unretained(this)));
+}
+
+void EmailHandler::HandleRejectEmails(const base::ListValue* args) {
+  /* TODO(hcarmona): Add histograms and uncomment this code.
+  UMA_HISTOGRAM_ENUMERATION(kEmailInteractionHistogram,
+                            EmailInteraction::kNoThanks,
+                            EmailInteraction::kCount);
+  */
+}
+
+void EmailHandler::HandleAddEmails(const base::ListValue* args) {
+  // Add bookmarks for all selected emails.
+  int bookmarkIndex = 0;
+  for (size_t i = 0; i < (size_t)EmailProviders::kCount; ++i) {
+    bool selected = false;
+    CHECK(args->GetBoolean(i, &selected));
+    if (selected) {
+      /* TODO(hcarmona): Add histograms and uncomment this code.
+      UMA_HISTOGRAM_ENUMERATION("FirstRun.NewUserExperience.EmailSelection",
+                                (EmailProviders)i,
+                                EmailProviders::kCount);
+      */
+      GURL app_url = GURL(kEmailUrls[i]);
+      bookmark_model_->AddURL(bookmark_model_->bookmark_bar_node(),
+                              bookmarkIndex++,
+                              base::ASCIIToUTF16(kEmailNames[i]), app_url);
+
+      // Preload the favicon cache with Chrome-bundled images. Otherwise, the
+      // pre-populated bookmarks don't have favicons and look bad. Favicons are
+      // updated automatically when a user visits a site.
+      favicon_service_->MergeFavicon(
+          app_url, app_url, favicon_base::IconType::kFavicon,
+          ui::ResourceBundle::GetSharedInstance().LoadDataResourceBytes(
+              kEmailIcons[i]),
+          gfx::Size(kEmailIconSize, kEmailIconSize));
+    }
+  }
+
+  // Enable bookmark bar.
+  prefs_->SetBoolean(bookmarks::prefs::kShowBookmarkBar, true);
+
+  // Show bookmark bubble.
+  /* TODO(hcarmona): Show promo bubble.
+  ShowPromoDelegate::CreatePromoDelegate(
+      IDS_NUX_EMAIL_DESCRIPTION_PROMO_BUBBLE)
+      ->ShowForNode(bookmark_model_->bookmark_bar_node()->GetChild(0));
+  */
+
+  /* TODO(hcarmona): Add histograms and uncomment this code.
+  UMA_HISTOGRAM_ENUMERATION(kEmailInteractionHistogram,
+                            EmailInteraction::kGetStarted,
+                            EmailInteraction::kCount);
+  */
+}
+
+void EmailHandler::AddSources(content::WebUIDataSource* html_source) {
+  // Localized strings.
+
+  // Add required resources.
+  html_source->AddResourcePath("email", IDR_NUX_EMAIL_HTML);
+
+  // Add icons
+}
+
+}  // namespace nux
\ No newline at end of file

components/nux/email/email_handler.h

+// Copyright 2018 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.
+
+#ifndef COMPONENTS_NUX_EMAIL_EMAIL_HANDLER_H_
+#define COMPONENTS_NUX_EMAIL_EMAIL_HANDLER_H_
+
+#include "base/macros.h"
+#include "base/values.h"
+#include "content/public/browser/web_ui_message_handler.h"
+
+class PrefService;
+
+namespace bookmarks {
+class BookmarkModel;
+}  // namespace bookmarks
+
+namespace content {
+class WebUIDataSource;
+}  // namespace content
+
+namespace favicon {
+class FaviconService;
+}  // namespace favicon
+
+namespace nux {
+
+extern const char* kEmailInteractionHistogram;
+
+// These values are persisted to logs. Entries should not be renumbered and
+// numeric values should never be reused.
+enum class EmailInteraction {
+  kPromptShown = 0,
+  kNoThanks = 1,
+  kGetStarted = 2,
+  kCount,
+};
+
+class EmailHandler : public content::WebUIMessageHandler {
+ public:
+  EmailHandler(PrefService* prefs,
+               favicon::FaviconService* favicon_service,
+               bookmarks::BookmarkModel* bookmark_model);
+  ~EmailHandler() override;
+
+  // WebUIMessageHandler:
+  void RegisterMessages() override;
+
+  // Callbacks for JS APIs.
+  void HandleRejectEmails(const base::ListValue* args);
+  void HandleAddEmails(const base::ListValue* args);
+
+  // Adds webui sources.
+  static void AddSources(content::WebUIDataSource* html_source);
+
+ private:
+  // Weak reference.
+  PrefService* prefs_;
+
+  // Weak reference.
+  favicon::FaviconService* favicon_service_;
+
+  // Weak reference.
+  bookmarks::BookmarkModel* bookmark_model_;
+
+  DISALLOW_COPY_AND_ASSIGN(EmailHandler);
+};
+
+}  // namespace nux
+
+#endif  // COMPONENTS_NUX_GOOGLE_APPS_GOOGLE_APPS_HANDLER_H_

components/nux/email/resources/BUILD.gn

+# Copyright 2018 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.
+
+import("//third_party/closure_compiler/compile_js.gni")
+
+js_type_check("closure_compile") {
+  deps = [
+    ":nux_email",
+  ]
+}
+
+js_library("nux_email") {
+  deps = []
+}

components/nux/email/resources/nux_email.html

+<!DOCTYPE html>
+<html dir="$i18n{textdirection}" lang="$i18n{language}">
+<meta charset="utf-8">
+<title></title>
+
+<div>Hello World</div>
+
+</html>
\ No newline at end of file

components/resources/components_resources.grd

@@ -17,6 +17,7 @@
       <part file="neterror_resources.grdp" />
       <part file="ntp_tiles_resources.grdp" />
       <if expr="is_win">
+        <part file="nux_email.grdp" />
         <part file="nux_google_apps.grdp" />
       </if>
       <part file="offline_pages_resources.grdp" />

components/resources/nux_email.grdp

+<?xml version="1.0" encoding="utf-8"?>
+<grit-part>
+  <include name="IDR_NUX_EMAIL_HTML" file="../nux/email/resources/nux_email.html" type="BINDATA" />
+</grit-part>