src/chrome/browser/ui/app_list/extension_app_item.cc

   1 // Copyright (c) 2012 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/app_list/extension_app_item.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/prefs/pref_service.h"
   9 #include "chrome/browser/extensions/extension_service.h"
  10 #include "chrome/browser/extensions/extension_util.h"
  11 #include "chrome/browser/extensions/launch_util.h"
  12 #include "chrome/browser/profiles/profile.h"
  13 #include "chrome/browser/ui/app_list/app_context_menu.h"
  14 #include "chrome/browser/ui/app_list/app_list_controller_delegate.h"
  15 #include "chrome/browser/ui/app_list/app_list_service.h"
  16 #include "chrome/browser/ui/extensions/extension_enable_flow.h"
  17 #include "chrome/browser/ui/host_desktop.h"
  18 #include "chrome/browser/ui/webui/ntp/core_app_launcher_handler.h"
  19 #include "chrome/common/chrome_switches.h"
  20 #include "chrome/common/extensions/extension_constants.h"
  21 #include "chrome/common/extensions/manifest_url_handler.h"
  22 #include "content/public/browser/user_metrics.h"
  23 #include "extensions/browser/app_sorting.h"
  24 #include "extensions/browser/extension_prefs.h"
  25 #include "extensions/browser/extension_system.h"
  26 #include "extensions/common/extension.h"
  27 #include "extensions/common/extension_icon_set.h"
  28 #include "extensions/common/manifest_handlers/icons_handler.h"
  29 #include "grit/theme_resources.h"
  30 #include "sync/api/string_ordinal.h"
  31 #include "ui/base/resource/resource_bundle.h"
  32 #include "ui/gfx/canvas.h"
  33 #include "ui/gfx/color_utils.h"
  34 #include "ui/gfx/image/canvas_image_source.h"
  35 #include "ui/gfx/image/image_skia_operations.h"
  36 #include "ui/gfx/rect.h"
  37
  38 using extensions::Extension;
  39
  40 namespace {
  41
  42 // Overlays a shortcut icon over the bottom left corner of a given image.
  43 class ShortcutOverlayImageSource : public gfx::CanvasImageSource {
  44  public:
  45   explicit ShortcutOverlayImageSource(const gfx::ImageSkia& icon)
  46       : gfx::CanvasImageSource(icon.size(), false),
  47         icon_(icon) {
  48   }
  49   virtual ~ShortcutOverlayImageSource() {}
  50
  51  private:
  52   // gfx::CanvasImageSource overrides:
  53   virtual void Draw(gfx::Canvas* canvas) OVERRIDE {
  54     canvas->DrawImageInt(icon_, 0, 0);
  55
  56     // Draw the overlay in the bottom left corner of the icon.
  57     const gfx::ImageSkia& overlay = *ui::ResourceBundle::GetSharedInstance().
  58         GetImageSkiaNamed(IDR_APP_LIST_TAB_OVERLAY);
  59     canvas->DrawImageInt(overlay, 0, icon_.height() - overlay.height());
  60   }
  61
  62   gfx::ImageSkia icon_;
  63
  64   DISALLOW_COPY_AND_ASSIGN(ShortcutOverlayImageSource);
  65 };
  66
  67 // Rounds the corners of a given image.
  68 class RoundedCornersImageSource : public gfx::CanvasImageSource {
  69  public:
  70   explicit RoundedCornersImageSource(const gfx::ImageSkia& icon)
  71       : gfx::CanvasImageSource(icon.size(), false),
  72         icon_(icon) {
  73   }
  74   virtual ~RoundedCornersImageSource() {}
  75
  76  private:
  77   // gfx::CanvasImageSource overrides:
  78   virtual void Draw(gfx::Canvas* canvas) OVERRIDE {
  79     // The radius used to round the app icon.
  80     const size_t kRoundingRadius = 2;
  81
  82     canvas->DrawImageInt(icon_, 0, 0);
  83
  84     scoped_ptr<gfx::Canvas> masking_canvas(
  85         new gfx::Canvas(gfx::Size(icon_.width(), icon_.height()), 1.0f, false));
  86     DCHECK(masking_canvas);
  87
  88     SkPaint opaque_paint;
  89     opaque_paint.setColor(SK_ColorWHITE);
  90     opaque_paint.setFlags(SkPaint::kAntiAlias_Flag);
  91     masking_canvas->DrawRoundRect(
  92         gfx::Rect(icon_.width(), icon_.height()),
  93         kRoundingRadius, opaque_paint);
  94
  95     SkPaint masking_paint;
  96     masking_paint.setXfermodeMode(SkXfermode::kDstIn_Mode);
  97     canvas->DrawImageInt(
  98         gfx::ImageSkia(masking_canvas->ExtractImageRep()), 0, 0, masking_paint);
  99   }
 100
 101   gfx::ImageSkia icon_;
 102
 103   DISALLOW_COPY_AND_ASSIGN(RoundedCornersImageSource);
 104 };
 105
 106 extensions::AppSorting* GetAppSorting(Profile* profile) {
 107   return extensions::ExtensionPrefs::Get(profile)->app_sorting();
 108 }
 109
 110 const color_utils::HSL shift = {-1, 0, 0.6};
 111
 112 }  // namespace
 113
 114 ExtensionAppItem::ExtensionAppItem(
 115     Profile* profile,
 116     const app_list::AppListSyncableService::SyncItem* sync_item,
 117     const std::string& extension_id,
 118     const std::string& extension_name,
 119     const gfx::ImageSkia& installing_icon,
 120     bool is_platform_app)
 121     : app_list::AppListItem(extension_id),
 122       profile_(profile),
 123       extension_id_(extension_id),
 124       extension_enable_flow_controller_(NULL),
 125       extension_name_(extension_name),
 126       installing_icon_(
 127           gfx::ImageSkiaOperations::CreateHSLShiftedImage(installing_icon,
 128                                                           shift)),
 129       is_platform_app_(is_platform_app),
 130       has_overlay_(false) {
 131   Reload();
 132   if (sync_item && sync_item->item_ordinal.IsValid()) {
 133     // An existing synced position exists, use that.
 134     set_position(sync_item->item_ordinal);
 135     // Only set the name from the sync item if it is empty.
 136     if (name().empty())
 137       SetName(sync_item->item_name);
 138     return;
 139   }
 140   GetAppSorting(profile_)->EnsureValidOrdinals(extension_id_,
 141                                                syncer::StringOrdinal());
 142   UpdatePositionFromExtensionOrdering();
 143 }
 144
 145 ExtensionAppItem::~ExtensionAppItem() {
 146 }
 147
 148 bool ExtensionAppItem::NeedsOverlay() const {
 149   // The overlay icon is disabled for hosted apps in windowed mode with
 150   // streamlined hosted apps.
 151   bool streamlined_hosted_apps = CommandLine::ForCurrentProcess()->
 152       HasSwitch(switches::kEnableStreamlinedHostedApps);
 153 #if defined(OS_CHROMEOS)
 154   if (!streamlined_hosted_apps)
 155     return false;
 156 #endif
 157   extensions::LaunchType launch_type =
 158       GetExtension()
 159           ? extensions::GetLaunchType(extensions::ExtensionPrefs::Get(profile_),
 160                                       GetExtension())
 161           : extensions::LAUNCH_TYPE_WINDOW;
 162
 163   return !is_platform_app_ && extension_id_ != extension_misc::kChromeAppId &&
 164       (!streamlined_hosted_apps ||
 165        launch_type != extensions::LAUNCH_TYPE_WINDOW);
 166 }
 167
 168 void ExtensionAppItem::Reload() {
 169   const Extension* extension = GetExtension();
 170   bool is_installing = !extension;
 171   SetIsInstalling(is_installing);
 172   if (is_installing) {
 173     SetName(extension_name_);
 174     UpdateIcon();
 175     return;
 176   }
 177   SetNameAndShortName(extension->name(), extension->short_name());
 178   LoadImage(extension);
 179 }
 180
 181 void ExtensionAppItem::UpdateIcon() {
 182   gfx::ImageSkia icon = installing_icon_;
 183
 184   // Use the app icon if the app exists. Turn the image greyscale if the app is
 185   // not launchable.
 186   if (GetExtension()) {
 187     icon = icon_->image_skia();
 188     const bool enabled = extensions::util::IsAppLaunchable(extension_id_,
 189                                                            profile_);
 190     if (!enabled) {
 191       const color_utils::HSL shift = {-1, 0, 0.6};
 192       icon = gfx::ImageSkiaOperations::CreateHSLShiftedImage(icon, shift);
 193     }
 194
 195     if (GetExtension()->from_bookmark())
 196       icon = gfx::ImageSkia(new RoundedCornersImageSource(icon), icon.size());
 197   }
 198   // Paint the shortcut overlay if necessary.
 199   has_overlay_ = NeedsOverlay();
 200   if (has_overlay_)
 201     icon = gfx::ImageSkia(new ShortcutOverlayImageSource(icon), icon.size());
 202
 203   SetIcon(icon, true);
 204 }
 205
 206 void ExtensionAppItem::Move(const ExtensionAppItem* prev,
 207                             const ExtensionAppItem* next) {
 208   if (!prev && !next)
 209     return;  // No reordering necessary
 210
 211   extensions::ExtensionPrefs* prefs = extensions::ExtensionPrefs::Get(profile_);
 212   extensions::AppSorting* sorting = GetAppSorting(profile_);
 213
 214   syncer::StringOrdinal page;
 215   std::string prev_id, next_id;
 216   if (!prev) {
 217     next_id = next->extension_id();
 218     page = sorting->GetPageOrdinal(next_id);
 219   } else if (!next) {
 220     prev_id = prev->extension_id();
 221     page = sorting->GetPageOrdinal(prev_id);
 222   } else {
 223     prev_id = prev->extension_id();
 224     page = sorting->GetPageOrdinal(prev_id);
 225     // Only set |next_id| if on the same page, otherwise just insert after prev.
 226     if (page.Equals(sorting->GetPageOrdinal(next->extension_id())))
 227       next_id = next->extension_id();
 228   }
 229   prefs->SetAppDraggedByUser(extension_id_);
 230   sorting->SetPageOrdinal(extension_id_, page);
 231   sorting->OnExtensionMoved(extension_id_, prev_id, next_id);
 232   UpdatePositionFromExtensionOrdering();
 233 }
 234
 235 const Extension* ExtensionAppItem::GetExtension() const {
 236   const ExtensionService* service =
 237       extensions::ExtensionSystem::Get(profile_)->extension_service();
 238   const Extension* extension = service->GetInstalledExtension(extension_id_);
 239   return extension;
 240 }
 241
 242 void ExtensionAppItem::LoadImage(const Extension* extension) {
 243   icon_.reset(new extensions::IconImage(
 244       profile_,
 245       extension,
 246       extensions::IconsInfo::GetIcons(extension),
 247       extension_misc::EXTENSION_ICON_MEDIUM,
 248       extensions::util::GetDefaultAppIcon(),
 249       this));
 250   UpdateIcon();
 251 }
 252
 253 bool ExtensionAppItem::RunExtensionEnableFlow() {
 254   if (extensions::util::IsAppLaunchableWithoutEnabling(extension_id_, profile_))
 255     return false;
 256
 257   if (!extension_enable_flow_) {
 258     extension_enable_flow_controller_ = GetController();
 259     extension_enable_flow_controller_->OnShowExtensionPrompt();
 260
 261     extension_enable_flow_.reset(new ExtensionEnableFlow(
 262         profile_, extension_id_, this));
 263     extension_enable_flow_->StartForNativeWindow(
 264         extension_enable_flow_controller_->GetAppListWindow());
 265   }
 266   return true;
 267 }
 268
 269 void ExtensionAppItem::Launch(int event_flags) {
 270   // |extension| could be NULL when it is being unloaded for updating.
 271   const Extension* extension = GetExtension();
 272   if (!extension)
 273     return;
 274
 275   if (RunExtensionEnableFlow())
 276     return;
 277
 278   GetController()->LaunchApp(profile_,
 279                              extension,
 280                              AppListControllerDelegate::LAUNCH_FROM_APP_LIST,
 281                              event_flags);
 282 }
 283
 284 void ExtensionAppItem::OnExtensionIconImageChanged(
 285     extensions::IconImage* image) {
 286   DCHECK(icon_.get() == image);
 287   UpdateIcon();
 288 }
 289
 290 void ExtensionAppItem::ExtensionEnableFlowFinished() {
 291   extension_enable_flow_.reset();
 292   extension_enable_flow_controller_->OnCloseExtensionPrompt();
 293   extension_enable_flow_controller_ = NULL;
 294
 295   // Automatically launch app after enabling.
 296   Launch(ui::EF_NONE);
 297 }
 298
 299 void ExtensionAppItem::ExtensionEnableFlowAborted(bool user_initiated) {
 300   extension_enable_flow_.reset();
 301   extension_enable_flow_controller_->OnCloseExtensionPrompt();
 302   extension_enable_flow_controller_ = NULL;
 303 }
 304
 305 void ExtensionAppItem::Activate(int event_flags) {
 306   // |extension| could be NULL when it is being unloaded for updating.
 307   const Extension* extension = GetExtension();
 308   if (!extension)
 309     return;
 310
 311   if (RunExtensionEnableFlow())
 312     return;
 313
 314   content::RecordAction(base::UserMetricsAction("AppList_ClickOnApp"));
 315   CoreAppLauncherHandler::RecordAppListMainLaunch(extension);
 316   GetController()->ActivateApp(profile_,
 317                                extension,
 318                                AppListControllerDelegate::LAUNCH_FROM_APP_LIST,
 319                                event_flags);
 320 }
 321
 322 ui::MenuModel* ExtensionAppItem::GetContextMenuModel() {
 323   context_menu_.reset(new app_list::AppContextMenu(
 324       this, profile_, extension_id_, GetController()));
 325   context_menu_->set_is_platform_app(is_platform_app_);
 326   if (IsInFolder())
 327     context_menu_->set_is_in_folder(true);
 328   return context_menu_->GetMenuModel();
 329 }
 330
 331 void ExtensionAppItem::OnExtensionPreferenceChanged() {
 332   if (has_overlay_ != NeedsOverlay())
 333     UpdateIcon();
 334 }
 335
 336 // static
 337 const char ExtensionAppItem::kItemType[] = "ExtensionAppItem";
 338
 339 const char* ExtensionAppItem::GetItemType() const {
 340   return ExtensionAppItem::kItemType;
 341 }
 342
 343 void ExtensionAppItem::ExecuteLaunchCommand(int event_flags) {
 344   Launch(event_flags);
 345 }
 346
 347 void ExtensionAppItem::UpdatePositionFromExtensionOrdering() {
 348   const syncer::StringOrdinal& page =
 349       GetAppSorting(profile_)->GetPageOrdinal(extension_id_);
 350   const syncer::StringOrdinal& launch =
 351      GetAppSorting(profile_)->GetAppLaunchOrdinal(extension_id_);
 352   set_position(syncer::StringOrdinal(
 353       page.ToInternalValue() + launch.ToInternalValue()));
 354 }
 355
 356 AppListControllerDelegate* ExtensionAppItem::GetController() {
 357   return AppListService::Get(chrome::GetActiveDesktop())->
 358       GetControllerDelegate();
 359 }