[Signin Error Dialog] (2/3) Added handlers and UI constructors

chrome/browser/ui/webui/signin/signin_error_handler.cc

+// Copyright 2016 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 "chrome/browser/ui/webui/signin/signin_error_handler.h"
+
+#include "base/bind.h"
+#include "chrome/browser/profiles/profile_attributes_entry.h"
+#include "chrome/browser/profiles/profile_manager.h"
+#include "chrome/browser/profiles/profile_window.h"
+#include "chrome/browser/signin/signin_ui_util.h"
+#include "chrome/browser/ui/browser_window.h"
+#include "chrome/browser/ui/webui/signin/signin_utils.h"
+#include "content/public/browser/web_ui.h"
+#include "url/gurl.h"
+
+void SigninErrorHandler::RegisterMessages() {
+  web_ui()->RegisterMessageCallback(
+      "confirm",
+      base::Bind(&SigninErrorHandler::HandleConfirm, base::Unretained(this)));
+  web_ui()->RegisterMessageCallback(
+      "switchToExistingProfile",
+      base::Bind(&SigninErrorHandler::HandleSwitchToExistingProfile,
+                 base::Unretained(this)));
+  web_ui()->RegisterMessageCallback(
+      "learnMore",
+      base::Bind(&SigninErrorHandler::HandleLearnMore, base::Unretained(this)));
+  web_ui()->RegisterMessageCallback(
+      "initializedWithSize",
+      base::Bind(&SigninErrorHandler::HandleInitializedWithSize,
+                 base::Unretained(this)));
+}
+
+void SigninErrorHandler::set_duplicate_profile_entry(
+    const ProfileAttributesEntry* duplicate_profile_entry) {
+  duplicate_profile_entry_ = duplicate_profile_entry;
+}
+
+void SigninErrorHandler::HandleSwitchToExistingProfile(
+    const base::ListValue* args) {
+  if (!duplicate_profile_entry_)
+    return;
+  CloseDialog();
+  // Switch to the existing duplicate profile. Do not create a new window when
+  // any existing ones can be reused.
+  profiles::SwitchToProfile(duplicate_profile_entry_->GetPath(), false,
+                            ProfileManager::CreateCallback(),
+                            ProfileMetrics::SWITCH_PROFILE_DUPLICATE);
+}
+
+void SigninErrorHandler::HandleConfirm(const base::ListValue* args) {
+  CloseDialog();
+}
+
+void SigninErrorHandler::HandleLearnMore(const base::ListValue* args) {
+  Browser* browser = signin::GetDesktopBrowser(web_ui());
+  DCHECK(browser);
+  browser->CloseModalSigninWindow();
+  signin_ui_util::ShowSigninErrorLearnMorePage(browser->profile());
+}
+
+void SigninErrorHandler::HandleInitializedWithSize(
+    const base::ListValue* args) {
+  if (!duplicate_profile_entry_)
+    web_ui()->CallJavascriptFunctionUnsafe("signin.error.removeSwitchButton");
+
+  signin::SetInitializedModalHeight(web_ui(), args);
+
+  // After the dialog is shown, some platforms might have an element focused.
+  // To be consistent, clear the focused element on all platforms.
+  // TODO(anthonyvd): Figure out why this is needed on Mac and not other
+  // platforms and if there's a way to start unfocused while avoiding this
+  // workaround.
+  web_ui()->CallJavascriptFunctionUnsafe("signin.error.clearFocus");
+}
+
+void SigninErrorHandler::CloseDialog() {
+  Browser* browser = signin::GetDesktopBrowser(web_ui());
+  DCHECK(browser);
+  browser->CloseModalSigninWindow();
+}