chrome/browser/ui/apps/chrome_app_delegate.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/ui/apps/chrome_app_delegate.h"
   6
   7 #include "base/memory/scoped_ptr.h"
   8 #include "base/strings/stringprintf.h"
   9 #include "chrome/browser/app_mode/app_mode_utils.h"
  10 #include "chrome/browser/apps/scoped_keep_alive.h"
  11 #include "chrome/browser/chrome_notification_types.h"
  12 #include "chrome/browser/extensions/chrome_extension_web_contents_observer.h"
  13 #include "chrome/browser/favicon/favicon_tab_helper.h"
  14 #include "chrome/browser/file_select_helper.h"
  15 #include "chrome/browser/media/media_capture_devices_dispatcher.h"
  16 #include "chrome/browser/platform_util.h"
  17 #include "chrome/browser/profiles/profile.h"
  18 #include "chrome/browser/shell_integration.h"
  19 #include "chrome/browser/ui/browser.h"
  20 #include "chrome/browser/ui/browser_dialogs.h"
  21 #include "chrome/browser/ui/browser_tabstrip.h"
  22 #include "chrome/browser/ui/browser_window.h"
  23 #include "chrome/browser/ui/scoped_tabbed_browser_displayer.h"
  24 #include "chrome/browser/ui/web_contents_sizer.h"
  25 #include "chrome/common/extensions/chrome_extension_messages.h"
  26 #include "components/ui/zoom/zoom_controller.h"
  27 #include "content/public/browser/browser_context.h"
  28 #include "content/public/browser/browser_thread.h"
  29 #include "content/public/browser/host_zoom_map.h"
  30 #include "content/public/browser/notification_service.h"
  31 #include "content/public/browser/render_view_host.h"
  32 #include "content/public/browser/web_contents.h"
  33 #include "content/public/browser/web_contents_delegate.h"
  34 #include "extensions/common/constants.h"
  35
  36 #if defined(USE_ASH)
  37 #include "ash/shelf/shelf_constants.h"
  38 #endif
  39
  40 #if defined(ENABLE_PRINTING)
  41 #if defined(ENABLE_PRINT_PREVIEW)
  42 #include "chrome/browser/printing/print_preview_message_handler.h"
  43 #include "chrome/browser/printing/print_view_manager.h"
  44 #else
  45 #include "chrome/browser/printing/print_view_manager_basic.h"
  46 #endif  // defined(ENABLE_PRINT_PREVIEW)
  47 #endif  // defined(ENABLE_PRINTING)
  48
  49 namespace {
  50
  51 // Time to wait for an app window to show before allowing Chrome to quit.
  52 int kAppWindowFirstShowTimeoutSeconds = 10;
  53
  54 bool disable_external_open_for_testing_ = false;
  55
  56 // Opens a URL with Chromium (not external browser) with the right profile.
  57 content::WebContents* OpenURLFromTabInternal(
  58     content::BrowserContext* context,
  59     const content::OpenURLParams& params) {
  60   // Force all links to open in a new tab, even if they were trying to open a
  61   // window.
  62   chrome::NavigateParams new_tab_params(
  63       static_cast<Browser*>(NULL), params.url, params.transition);
  64   if (params.disposition == NEW_BACKGROUND_TAB) {
  65     new_tab_params.disposition = NEW_BACKGROUND_TAB;
  66   } else {
  67     new_tab_params.disposition = NEW_FOREGROUND_TAB;
  68     new_tab_params.window_action = chrome::NavigateParams::SHOW_WINDOW;
  69   }
  70
  71   new_tab_params.initiating_profile = Profile::FromBrowserContext(context);
  72   chrome::Navigate(&new_tab_params);
  73
  74   return new_tab_params.target_contents;
  75 }
  76
  77 // Helper class that opens a URL based on if this browser instance is the
  78 // default system browser. If it is the default, open the URL directly instead
  79 // of asking the system to open it.
  80 class OpenURLFromTabBasedOnBrowserDefault
  81     : public ShellIntegration::DefaultWebClientObserver {
  82  public:
  83   OpenURLFromTabBasedOnBrowserDefault(scoped_ptr<content::WebContents> source,
  84                                       const content::OpenURLParams& params)
  85       : source_(source.Pass()), params_(params) {}
  86
  87   // Opens a URL when called with the result of if this is the default system
  88   // browser or not.
  89   void SetDefaultWebClientUIState(
  90       ShellIntegration::DefaultWebClientUIState state) override {
  91     Profile* profile =
  92         Profile::FromBrowserContext(source_->GetBrowserContext());
  93     DCHECK(profile);
  94     if (!profile)
  95       return;
  96     switch (state) {
  97       case ShellIntegration::STATE_PROCESSING:
  98         break;
  99       case ShellIntegration::STATE_IS_DEFAULT:
 100         OpenURLFromTabInternal(profile, params_);
 101         break;
 102       case ShellIntegration::STATE_NOT_DEFAULT:
 103       case ShellIntegration::STATE_UNKNOWN:
 104         platform_util::OpenExternal(profile, params_.url);
 105         break;
 106     }
 107   }
 108
 109   bool IsOwnedByWorker() override { return true; }
 110
 111  private:
 112   scoped_ptr<content::WebContents> source_;
 113   const content::OpenURLParams params_;
 114 };
 115
 116 }  // namespace
 117
 118 // static
 119 void ChromeAppDelegate::RelinquishKeepAliveAfterTimeout(
 120     const base::WeakPtr<ChromeAppDelegate>& chrome_app_delegate) {
 121   // Resetting the ScopedKeepAlive may cause nested destruction of the
 122   // ChromeAppDelegate which also resets the ScopedKeepAlive. To avoid this,
 123   // move the ScopedKeepAlive out to here and let it fall out of scope.
 124   if (chrome_app_delegate.get() && chrome_app_delegate->is_hidden_)
 125     scoped_ptr<ScopedKeepAlive>(chrome_app_delegate->keep_alive_.Pass());
 126 }
 127
 128 class ChromeAppDelegate::NewWindowContentsDelegate
 129     : public content::WebContentsDelegate {
 130  public:
 131   NewWindowContentsDelegate() {}
 132   ~NewWindowContentsDelegate() override {}
 133
 134   content::WebContents* OpenURLFromTab(
 135       content::WebContents* source,
 136       const content::OpenURLParams& params) override;
 137
 138  private:
 139   DISALLOW_COPY_AND_ASSIGN(NewWindowContentsDelegate);
 140 };
 141
 142 content::WebContents*
 143 ChromeAppDelegate::NewWindowContentsDelegate::OpenURLFromTab(
 144     content::WebContents* source,
 145     const content::OpenURLParams& params) {
 146   if (source) {
 147     // This NewWindowContentsDelegate was given ownership of the incoming
 148     // WebContents by being assigned as its delegate within
 149     // ChromeAppDelegate::AddNewContents, but this is the first time
 150     // NewWindowContentsDelegate actually sees the WebContents.
 151     // Here it is captured for deletion.
 152     scoped_ptr<content::WebContents> owned_source(source);
 153     scoped_refptr<ShellIntegration::DefaultWebClientWorker>
 154         check_if_default_browser_worker =
 155             new ShellIntegration::DefaultBrowserWorker(
 156                 new OpenURLFromTabBasedOnBrowserDefault(owned_source.Pass(),
 157                                                         params));
 158     // Object lifetime notes: The OpenURLFromTabBasedOnBrowserDefault is owned
 159     // by check_if_default_browser_worker. StartCheckIsDefault() takes lifetime
 160     // ownership of check_if_default_browser_worker and will clean up after
 161     // the asynchronous tasks.
 162     check_if_default_browser_worker->StartCheckIsDefault();
 163   }
 164   return NULL;
 165 }
 166
 167 ChromeAppDelegate::ChromeAppDelegate(scoped_ptr<ScopedKeepAlive> keep_alive)
 168     : has_been_shown_(false),
 169       is_hidden_(true),
 170       keep_alive_(keep_alive.Pass()),
 171       new_window_contents_delegate_(new NewWindowContentsDelegate()),
 172       weak_factory_(this) {
 173   registrar_.Add(this,
 174                  chrome::NOTIFICATION_APP_TERMINATING,
 175                  content::NotificationService::AllSources());
 176 }
 177
 178 ChromeAppDelegate::~ChromeAppDelegate() {
 179   // Unregister now to prevent getting notified if |keep_alive_| is the last.
 180   terminating_callback_.Reset();
 181 }
 182
 183 void ChromeAppDelegate::DisableExternalOpenForTesting() {
 184   disable_external_open_for_testing_ = true;
 185 }
 186
 187 void ChromeAppDelegate::InitWebContents(content::WebContents* web_contents) {
 188   FaviconTabHelper::CreateForWebContents(web_contents);
 189
 190 #if defined(ENABLE_PRINTING)
 191 #if defined(ENABLE_PRINT_PREVIEW)
 192   printing::PrintViewManager::CreateForWebContents(web_contents);
 193   printing::PrintPreviewMessageHandler::CreateForWebContents(web_contents);
 194 #else
 195   printing::PrintViewManagerBasic::CreateForWebContents(web_contents);
 196 #endif  // defined(ENABLE_PRINT_PREVIEW)
 197 #endif  // defined(ENABLE_PRINTING)
 198   extensions::ChromeExtensionWebContentsObserver::CreateForWebContents(
 199       web_contents);
 200
 201   // Kiosk app supports zooming.
 202   if (chrome::IsRunningInForcedAppMode())
 203     ui_zoom::ZoomController::CreateForWebContents(web_contents);
 204 }
 205
 206 void ChromeAppDelegate::RenderViewCreated(
 207     content::RenderViewHost* render_view_host) {
 208   if (!chrome::IsRunningInForcedAppMode()) {
 209     // Due to a bug in the way apps reacted to default zoom changes, some apps
 210     // can incorrectly have host level zoom settings. These aren't wanted as
 211     // apps cannot be zoomed, so are removed. This should be removed if apps
 212     // can be made to zoom again.
 213     // See http://crbug.com/446759 for more details.
 214     content::WebContents* web_contents =
 215         content::WebContents::FromRenderViewHost(render_view_host);
 216     DCHECK(web_contents);
 217     content::HostZoomMap* zoom_map =
 218         content::HostZoomMap::GetForWebContents(web_contents);
 219     DCHECK(zoom_map);
 220     zoom_map->SetZoomLevelForHost(web_contents->GetURL().host(), 0);
 221   }
 222 }
 223
 224 void ChromeAppDelegate::ResizeWebContents(content::WebContents* web_contents,
 225                                           const gfx::Size& size) {
 226   ::ResizeWebContents(web_contents, size);
 227 }
 228
 229 content::WebContents* ChromeAppDelegate::OpenURLFromTab(
 230     content::BrowserContext* context,
 231     content::WebContents* source,
 232     const content::OpenURLParams& params) {
 233   return OpenURLFromTabInternal(context, params);
 234 }
 235
 236 void ChromeAppDelegate::AddNewContents(content::BrowserContext* context,
 237                                        content::WebContents* new_contents,
 238                                        WindowOpenDisposition disposition,
 239                                        const gfx::Rect& initial_rect,
 240                                        bool user_gesture,
 241                                        bool* was_blocked) {
 242   if (!disable_external_open_for_testing_) {
 243     // We don't really want to open a window for |new_contents|, but we need to
 244     // capture its intended navigation. Here we give ownership to the
 245     // NewWindowContentsDelegate, which will dispose of the contents once
 246     // a navigation is captured.
 247     new_contents->SetDelegate(new_window_contents_delegate_.get());
 248     return;
 249   }
 250   chrome::ScopedTabbedBrowserDisplayer displayer(
 251       Profile::FromBrowserContext(context), chrome::GetActiveDesktop());
 252   // Force all links to open in a new tab, even if they were trying to open a
 253   // new window.
 254   disposition =
 255       disposition == NEW_BACKGROUND_TAB ? disposition : NEW_FOREGROUND_TAB;
 256   chrome::AddWebContents(displayer.browser(),
 257                          NULL,
 258                          new_contents,
 259                          disposition,
 260                          initial_rect,
 261                          user_gesture,
 262                          was_blocked);
 263 }
 264
 265 content::ColorChooser* ChromeAppDelegate::ShowColorChooser(
 266     content::WebContents* web_contents,
 267     SkColor initial_color) {
 268   return chrome::ShowColorChooser(web_contents, initial_color);
 269 }
 270
 271 void ChromeAppDelegate::RunFileChooser(
 272     content::WebContents* tab,
 273     const content::FileChooserParams& params) {
 274   FileSelectHelper::RunFileChooser(tab, params);
 275 }
 276
 277 void ChromeAppDelegate::RequestMediaAccessPermission(
 278     content::WebContents* web_contents,
 279     const content::MediaStreamRequest& request,
 280     const content::MediaResponseCallback& callback,
 281     const extensions::Extension* extension) {
 282   MediaCaptureDevicesDispatcher::GetInstance()->ProcessMediaAccessRequest(
 283       web_contents, request, callback, extension);
 284 }
 285
 286 bool ChromeAppDelegate::CheckMediaAccessPermission(
 287     content::WebContents* web_contents,
 288     const GURL& security_origin,
 289     content::MediaStreamType type,
 290     const extensions::Extension* extension) {
 291   return MediaCaptureDevicesDispatcher::GetInstance()
 292       ->CheckMediaAccessPermission(
 293           web_contents, security_origin, type, extension);
 294 }
 295
 296 int ChromeAppDelegate::PreferredIconSize() {
 297 #if defined(USE_ASH)
 298   return ash::kShelfSize;
 299 #else
 300   return extension_misc::EXTENSION_ICON_SMALL;
 301 #endif
 302 }
 303
 304 void ChromeAppDelegate::SetWebContentsBlocked(
 305     content::WebContents* web_contents,
 306     bool blocked) {
 307   // RenderViewHost may be NULL during shutdown.
 308   content::RenderViewHost* host = web_contents->GetRenderViewHost();
 309   if (host) {
 310     host->Send(new ChromeViewMsg_SetVisuallyDeemphasized(host->GetRoutingID(),
 311                                                          blocked));
 312   }
 313 }
 314
 315 bool ChromeAppDelegate::IsWebContentsVisible(
 316     content::WebContents* web_contents) {
 317   return platform_util::IsVisible(web_contents->GetNativeView());
 318 }
 319
 320 void ChromeAppDelegate::SetTerminatingCallback(const base::Closure& callback) {
 321   terminating_callback_ = callback;
 322 }
 323
 324 void ChromeAppDelegate::OnHide() {
 325   is_hidden_ = true;
 326   if (has_been_shown_) {
 327     keep_alive_.reset();
 328     return;
 329   }
 330
 331   // Hold on to the keep alive for some time to give the app a chance to show
 332   // the window.
 333   content::BrowserThread::PostDelayedTask(
 334       content::BrowserThread::UI, FROM_HERE,
 335       base::Bind(&ChromeAppDelegate::RelinquishKeepAliveAfterTimeout,
 336                  weak_factory_.GetWeakPtr()),
 337       base::TimeDelta::FromSeconds(kAppWindowFirstShowTimeoutSeconds));
 338 }
 339
 340 void ChromeAppDelegate::OnShow() {
 341   has_been_shown_ = true;
 342   is_hidden_ = false;
 343   keep_alive_.reset(new ScopedKeepAlive);
 344 }
 345
 346 void ChromeAppDelegate::Observe(int type,
 347                                 const content::NotificationSource& source,
 348                                 const content::NotificationDetails& details) {
 349   switch (type) {
 350     case chrome::NOTIFICATION_APP_TERMINATING:
 351       if (!terminating_callback_.is_null())
 352         terminating_callback_.Run();
 353       break;
 354     default:
 355       NOTREACHED() << "Received unexpected notification";
 356   }
 357 }