Pull shell window stuff out of ExtensionHost and put in ShellWindow

chrome/browser/extensions/platform_app_host.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/platform_app_host.h"
+
+#include <list>
+
+// TODO(benwells): review include list and forward decls
+#include "base/bind.h"
+#include "base/memory/singleton.h"
+#include "base/memory/weak_ptr.h"
+#include "base/message_loop.h"
+#include "base/metrics/histogram.h"
+#include "base/string_util.h"
+#include "base/utf_string_conversions.h"
+#include "chrome/browser/browser_shutdown.h"
+#include "chrome/browser/extensions/extension_process_manager.h"
+#include "chrome/browser/extensions/extension_service.h"
+#include "chrome/browser/extensions/extension_system.h"
+#include "chrome/browser/extensions/extension_tab_util.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/ui/app_modal_dialogs/message_box_handler.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/browser_list.h"
+#include "chrome/browser/ui/browser_window.h"
+#include "chrome/browser/ui/prefs/prefs_tab_helper.h"
+#include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
+#include "chrome/common/chrome_constants.h"
+#include "chrome/common/chrome_notification_types.h"
+#include "chrome/common/chrome_view_type.h"
+#include "chrome/common/extensions/extension.h"
+#include "chrome/common/extensions/extension_constants.h"
+#include "chrome/common/extensions/extension_messages.h"
+#include "chrome/common/render_messages.h"
+#include "chrome/common/url_constants.h"
+#include "content/public/browser/content_browser_client.h"
+#include "content/public/browser/native_web_keyboard_event.h"
+#include "content/public/browser/notification_service.h"
+#include "content/public/browser/render_process_host.h"
+#include "content/public/browser/render_view_host.h"
+#include "content/public/browser/site_instance.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_contents_view.h"
+#include "content/public/common/renderer_preferences.h"
+#include "grit/browser_resources.h"
+#include "grit/chromium_strings.h"
+#include "grit/generated_resources.h"
+#include "ui/base/keycodes/keyboard_codes.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "ui/base/resource/resource_bundle.h"
+
+#if defined(TOOLKIT_VIEWS)
+#include "ui/views/widget/widget.h"
+#endif
+
+using WebKit::WebDragOperation;
+using WebKit::WebDragOperationsMask;
+using content::OpenURLParams;
+using content::RenderViewHost;
+using content::WebContents;
+
+//////////////////
+// PlatformAppHost
+
+// TODO(benwells): SiteInstance should be created per platform app, not per
+// platform app host (which means per shell window). This probably means we
+// need some sort of PlatformAppSiteManager or something :(
+PlatformAppHost::PlatformAppHost(Profile* profile,
+                                 const GURL& url)
+    : profile_(profile),
+      render_view_host_(NULL),
+      did_stop_loading_(false),
+      initial_url_(url),
+      ALLOW_THIS_IN_INITIALIZER_LIST(
+          extension_function_dispatcher_(profile_, this)),
+      associated_web_contents_(NULL),

[Aaron Boodman, 2012/04/20 07:05:53]

This is always NULL and can be removed, which means that ::Observe can also be
removed.

[benwells, 2012/04/24 08:35:32]

Done.

+      site_instance_(content::SiteInstance::Create(profile)) {
+  host_contents_.reset(WebContents::Create(
+      profile_, site_instance_.get(), MSG_ROUTING_NONE, NULL, NULL));
+  content::WebContentsObserver::Observe(host_contents_.get());
+  host_contents_->SetDelegate(this);
+  host_contents_->SetViewType(chrome::VIEW_TYPE_APP_SHELL);
+  host_contents_->GetMutableRendererPrefs()->browser_handles_all_requests =
+      true;
+  host_contents_->GetRenderViewHost()->SyncRendererPrefs();
+
+  prefs_tab_helper_.reset(new PrefsTabHelper(host_contents()));
+
+  render_view_host_ = host_contents_->GetRenderViewHost();

[Aaron Boodman, 2012/04/20 07:05:53]

Why do you need to store the rvh pointer?

[benwells, 2012/04/24 08:35:32]

Gone.

+
+  CreateRenderViewSoon();
+}
+
+PlatformAppHost::~PlatformAppHost() {}
+
+WebContents* PlatformAppHost::GetAssociatedWebContents() const {
+  return associated_web_contents_;
+}
+
+void PlatformAppHost::SetAssociatedWebContents(
+    content::WebContents* web_contents) {
+  associated_web_contents_ = web_contents;
+  if (web_contents) {
+    registrar_.Add(this, content::NOTIFICATION_WEB_CONTENTS_DESTROYED,
+                   content::Source<WebContents>(associated_web_contents_));
+  }
+}
+
+content::RenderProcessHost* PlatformAppHost::render_process_host() const {
+  return render_view_host()->GetProcess();
+}
+
+void PlatformAppHost::CreateRenderViewSoon() {

[benwells, 2012/04/19 09:03:55]

This can move into constructor.

+  host_contents_->GetController().LoadURL(
+      initial_url_, content::Referrer(), content::PAGE_TRANSITION_LINK,
+      std::string());
+}
+
+Browser* PlatformAppHost::GetBrowser() {
+  return NULL;
+}
+
+void PlatformAppHost::Close() {
+  // TODO(benwells):create NOTIFICATION_PLATFORM_APP_VIEW_SHOULD_CLOSE.
+  //  content::NotificationService::current()->Notify(
+  //      chrome::NOTIFICATION_EXTENSION_HOST_VIEW_SHOULD_CLOSE,
+  //      content::Source<Profile>(profile_),
+  //      content::Details<PlatformAppHost>(this));
+}
+
+void PlatformAppHost::Observe(int type,
+                            const content::NotificationSource& source,
+                            const content::NotificationDetails& details) {
+  switch (type) {
+    case content::NOTIFICATION_WEB_CONTENTS_DESTROYED:
+      if (content::Source<WebContents>(source).ptr() ==
+          associated_web_contents_) {
+        associated_web_contents_ = NULL;
+      }
+      break;
+    default:
+      NOTREACHED() << "Unexpected notification sent.";
+      break;
+  }
+}
+
+void PlatformAppHost::DidStopLoading() {
+  bool notify = !did_stop_loading_;
+  did_stop_loading_ = true;
+#if defined(TOOLKIT_VIEWS) || defined(OS_MACOSX)
+  if (view_.get())
+    view_->DidStopLoading();

[benwells, 2012/04/19 09:03:55]

I think this means I need to bring some sort of view class back. Will check it
on Windows.

[Aaron Boodman, 2012/04/20 07:05:53]

ShellWindow is essentially that object. So that's a reason why it would be
convenient to combine the two objects.

But also, I'm not sure you even need this. This is here because of some specific
needs that the extension popup has which I'm not sure shell windows do. Do popup
windows shrinkwrap the size of their contents?

+#endif
+  if (notify)
+    UMA_HISTOGRAM_TIMES("Extensions.ShellLoadTime", since_created_.Elapsed());
+}
+
+void PlatformAppHost::CloseContents(WebContents* contents) {
+  Close();
+}
+
+bool PlatformAppHost::ShouldSuppressDialogs() {
+  return true;
+}
+
+bool PlatformAppHost::OnMessageReceived(const IPC::Message& message) {
+  bool handled = true;
+  IPC_BEGIN_MESSAGE_MAP(PlatformAppHost, message)
+    IPC_MESSAGE_HANDLER(ExtensionHostMsg_Request, OnRequest)
+    IPC_MESSAGE_UNHANDLED(handled = false)
+  IPC_END_MESSAGE_MAP()
+  return handled;
+}
+
+void PlatformAppHost::OnRequest(const ExtensionHostMsg_Request_Params& params) {
+  extension_function_dispatcher_.Dispatch(params, render_view_host());
+}
+
+void PlatformAppHost::RenderViewDeleted(RenderViewHost* render_view_host) {

[Aaron Boodman, 2012/04/20 07:05:53]

Don't think this is needed?

[benwells, 2012/04/24 08:35:32]

Done.

+  // If our RenderViewHost is deleted, fall back to the host_contents' current
+  // RVH. There is sometimes a small gap between the pending RVH being deleted
+  // and RenderViewCreated being called, so we update it here.
+  if (render_view_host == render_view_host_)
+    render_view_host_ = host_contents_->GetRenderViewHost();
+}