Start implementing an auth flow for platform apps to be able to do auth

chrome/browser/extensions/api/identity/extension_auth_flow.cc

+// Copyright (c) 2012 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/extensions/api/identity/extension_auth_flow.h"
+
+#include "base/string_util.h"
+#include "content\public\browser\navigation_controller.h"
+#include "ipc/ipc_message.h"
+
+using content::BrowserContext;
+using content::WebContents;
+using content::WebContentsDelegate;
+using views::View;
+using views::WebView;
+using views::Widget;
+using views::WidgetDelegate;
+
+namespace extensions {
+
+ExtensionAuthFlow::ExtensionAuthFlow(
+    Delegate* delegate,
+    content::BrowserContext* browser_context,
+    const std::string& extension_id,
+    const GURL& provider_url)
+    : delegate_(delegate),
+      browser_context_(browser_context),
+      extension_id_(extension_id),
+      provider_url_(provider_url) {  
+}
+
+void ExtensionAuthFlow::Start() {
+  contents_.reset(WebContents::Create(
+      browser_context_, NULL, MSG_ROUTING_NONE, NULL, NULL));
+  contents_->SetDelegate(this);
+  contents_->GetController().LoadURL(
+      provider_url_,
+      content::Referrer(),
+      content::PAGE_TRANSITION_START_PAGE,
+      std::string());
+}
+
+void ExtensionAuthFlow::LoadingStateChanged(WebContents* source) {
+  if (source->IsLoading())
+    return;
+  OnProviderUrlLoaded();
+}
+
+void ExtensionAuthFlow::OnProviderUrlLoaded() {
+  GURL url = contents_->GetURL();
+  if (StartsWithASCII(url.spec(), "http://munjalsample.appspot.com", false)) {
+    // if (widget_.get())
+    //  widget_->Close();
+    result_ = url;
+    ReportResult();
+    return;
+  }
+  web_view_.reset(new WebView(browser_context_));
+  web_view_->SetWebContents(contents_.get());
+  widget_.reset(Widget::CreateWindow(this));
+  widget_->SetSize(gfx::Size(800, 600));
+  widget_->Show();
+}
+
+View* ExtensionAuthFlow::GetContentsView() {
+  CHECK(web_view_.get());
+  return web_view_.get();
+}
+
+Widget* ExtensionAuthFlow::GetWidget() {
+  CHECK(web_view_.get());
+  return web_view_->GetWidget();
+}
+
+const Widget* ExtensionAuthFlow::GetWidget() const {
+  CHECK(web_view_.get());
+  return web_view_->GetWidget();
+}
+
+void ExtensionAuthFlow::WindowClosing() {
+}
+
+void ExtensionAuthFlow::ReportResult() {
+  if (delegate_)
+    delegate_->OnAuthFlowCompleted(result_.spec());
+}
+
+}  // namespace extensions