Pull shell window stuff out of ExtensionHost and put in ShellWindow

chrome/browser/extensions/platform_app_host.h

+// 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.
+
+#ifndef CHROME_BROWSER_EXTENSIONS_PLATFORM_APP_HOST_H_
+#define CHROME_BROWSER_EXTENSIONS_PLATFORM_APP_HOST_H_
+#pragma once
+
+#include <string>
+#include <vector>
+
+// TODO(benwells): review includes and forward decls
+#include "base/logging.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/perftimer.h"
+#include "chrome/browser/extensions/extension_function_dispatcher.h"
+#include "content/public/browser/notification_observer.h"
+#include "content/public/browser/notification_registrar.h"
+#include "content/public/browser/web_contents_delegate.h"
+#include "content/public/browser/web_contents_observer.h"
+#include "content/public/common/view_type.h"
+
+class Browser;
+class Extension;
+class PrefsTabHelper;
+
+namespace content {
+class RenderProcessHost;
+class RenderWidgetHostView;
+class SiteInstance;
+}
+
+// This class is the browser component of a platform app's RenderView.
+// It handles setting up the renderer process, if needed.
+class PlatformAppHost : public content::WebContentsDelegate,
+                        public content::WebContentsObserver,
+                        public ExtensionFunctionDispatcher::Delegate,
+                        public content::NotificationObserver {
+ public:
+  PlatformAppHost(Profile* profile,
+                  const GURL& url);
+
+  virtual ~PlatformAppHost();
+
+  content::WebContents* host_contents() const { return host_contents_.get(); }
+  content::RenderViewHost* render_view_host() const {
+    return render_view_host_;
+  }
+  content::RenderProcessHost* render_process_host() const;
+
+  Profile* profile() const { return profile_; }
+
+  // ExtensionFunctionDispatcher::Delegate
+  virtual content::WebContents* GetAssociatedWebContents() const OVERRIDE;
+  void SetAssociatedWebContents(content::WebContents* web_contents);
+
+  // Prepares to initializes our RenderViewHost by creating its RenderView and
+  // navigating to this host's url. Uses host_view for the RenderViewHost's view
+  // (can be NULL). This happens immediately, unlike ExtensionHost.
+  virtual void CreateRenderViewSoon() OVERRIDE;
+
+  // content::WebContentsObserver
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
+  virtual void RenderViewDeleted(
+      content::RenderViewHost* render_view_host) OVERRIDE;
+  virtual void DidStopLoading() OVERRIDE;
+
+  // content::WebContentsDelegate
+  virtual void CloseContents(content::WebContents* contents) OVERRIDE;
+  virtual bool ShouldSuppressDialogs() OVERRIDE;
+
+  // content::NotificationObserver
+  virtual void Observe(int type,
+                       const content::NotificationSource& source,
+                       const content::NotificationDetails& details) OVERRIDE;
+
+ private:
+  // Closes this host (results in deletion).
+  void Close();
+
+  // ExtensionFunctionDispatcher::Delegate
+  virtual Browser* GetBrowser() OVERRIDE;
+
+  // Message handlers.
+  void OnRequest(const ExtensionHostMsg_Request_Params& params);
+
+  // The profile that this host is tied to.
+  Profile* profile_;
+
+  // The host for our HTML content.
+  scoped_ptr<content::WebContents> host_contents_;
+
+  // Helpers that take care of extra functionality for our host contents.
+  scoped_ptr<PrefsTabHelper> prefs_tab_helper_;
+
+  // A weak pointer to the current or pending RenderViewHost. We don't access
+  // this through the host_contents because we want to deal with the pending
+  // host, so we can send messages to it before it finishes loading.
+  content::RenderViewHost* render_view_host_;
+
+  // Whether the RenderWidget has reported that it has stopped loading.
+  bool did_stop_loading_;
+
+  // The original URL of the page being hosted.
+  GURL initial_url_;
+
+  content::NotificationRegistrar registrar_;
+
+  ExtensionFunctionDispatcher extension_function_dispatcher_;
+
+  // The relevant WebContents associated with this PlatformAppHost, if any.
+  content::WebContents* associated_web_contents_;
+
+  // A SiteInstance for grouping render processes for this app together.
+  scoped_refptr<content::SiteInstance> site_instance_;
+
+  // Used to measure how long it's been since the host was created.
+  PerfTimer since_created_;
+
+  DISALLOW_COPY_AND_ASSIGN(PlatformAppHost);
+};
+
+#endif  // CHROME_BROWSER_EXTENSIONS_PLATFORM_APP_HOST_H_