chrome/browser/extensions/extension_uninstall_dialog.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/extensions/extension_uninstall_dialog.h"
   6
   7 #include "base/bind.h"
   8 #include "base/logging.h"
   9 #include "base/message_loop/message_loop.h"
  10 #include "base/strings/utf_string_conversions.h"
  11 #include "chrome/browser/chrome_notification_types.h"
  12 #include "chrome/browser/extensions/extension_util.h"
  13 #include "chrome/browser/extensions/image_loader.h"
  14 #include "chrome/browser/profiles/profile.h"
  15 #include "chrome/browser/ui/browser.h"
  16 #include "content/public/browser/notification_service.h"
  17 #include "content/public/browser/notification_source.h"
  18 #include "extensions/browser/extension_registry.h"
  19 #include "extensions/common/constants.h"
  20 #include "extensions/common/extension.h"
  21 #include "extensions/common/extension_icon_set.h"
  22 #include "extensions/common/extension_resource.h"
  23 #include "extensions/common/manifest_handlers/icons_handler.h"
  24 #include "grit/generated_resources.h"
  25 #include "grit/theme_resources.h"
  26 #include "ui/base/l10n/l10n_util.h"
  27 #include "ui/base/resource/resource_bundle.h"
  28 #include "ui/gfx/image/image.h"
  29 #include "ui/gfx/image/image_skia.h"
  30
  31 namespace {
  32
  33 // Returns bitmap for the default icon with size equal to the default icon's
  34 // pixel size under maximal supported scale factor.
  35 SkBitmap GetDefaultIconBitmapForMaxScaleFactor(bool is_app) {
  36   const gfx::ImageSkia& image = is_app ?
  37       extensions::util::GetDefaultAppIcon() :
  38       extensions::util::GetDefaultExtensionIcon();
  39   return image.GetRepresentation(
  40       gfx::ImageSkia::GetMaxSupportedScale()).sk_bitmap();
  41 }
  42
  43 }  // namespace
  44
  45 ExtensionUninstallDialog::ExtensionUninstallDialog(
  46     Profile* profile,
  47     Browser* browser,
  48     ExtensionUninstallDialog::Delegate* delegate)
  49     : profile_(profile),
  50       browser_(browser),
  51       delegate_(delegate),
  52       extension_(NULL),
  53       triggering_extension_(NULL),
  54       state_(kImageIsLoading),
  55       ui_loop_(base::MessageLoop::current()) {
  56   if (browser) {
  57     registrar_.Add(this,
  58                    chrome::NOTIFICATION_BROWSER_CLOSED,
  59                    content::Source<Browser>(browser));
  60   }
  61 }
  62
  63 ExtensionUninstallDialog::~ExtensionUninstallDialog() {
  64 }
  65
  66 void ExtensionUninstallDialog::ConfirmProgrammaticUninstall(
  67     const extensions::Extension* extension,
  68     const extensions::Extension* triggering_extension) {
  69   triggering_extension_ = triggering_extension;
  70   ConfirmUninstall(extension);
  71 }
  72
  73 void ExtensionUninstallDialog::ConfirmUninstall(
  74     const extensions::Extension* extension) {
  75   DCHECK(ui_loop_ == base::MessageLoop::current());
  76   extension_ = extension;
  77   // Bookmark apps may not have 128x128 icons so accept 64x64 icons.
  78   const int icon_size = extension_->from_bookmark()
  79                             ? extension_misc::EXTENSION_ICON_SMALL * 2
  80                             : extension_misc::EXTENSION_ICON_LARGE;
  81   extensions::ExtensionResource image = extensions::IconsInfo::GetIconResource(
  82       extension_,
  83       icon_size,
  84       ExtensionIconSet::MATCH_BIGGER);
  85
  86   // Load the image asynchronously. The response will be sent to OnImageLoaded.
  87   state_ = kImageIsLoading;
  88   extensions::ImageLoader* loader =
  89       extensions::ImageLoader::Get(profile_);
  90
  91   std::vector<extensions::ImageLoader::ImageRepresentation> images_list;
  92   images_list.push_back(extensions::ImageLoader::ImageRepresentation(
  93       image,
  94       extensions::ImageLoader::ImageRepresentation::NEVER_RESIZE,
  95       gfx::Size(),
  96       ui::SCALE_FACTOR_100P));
  97   loader->LoadImagesAsync(extension_,
  98                           images_list,
  99                           base::Bind(&ExtensionUninstallDialog::OnImageLoaded,
 100                                      AsWeakPtr(),
 101                                      extension_->id()));
 102 }
 103
 104 void ExtensionUninstallDialog::SetIcon(const gfx::Image& image) {
 105   if (image.IsEmpty()) {
 106     // Let's set default icon bitmap whose size is equal to the default icon's
 107     // pixel size under maximal supported scale factor. If the bitmap is larger
 108     // than the one we need, it will be scaled down by the ui code.
 109     // TODO(tbarzic): We should use IconImage here and load the required bitmap
 110     //     lazily.
 111     icon_ = gfx::ImageSkia::CreateFrom1xBitmap(
 112         GetDefaultIconBitmapForMaxScaleFactor(extension_->is_app()));
 113   } else {
 114     icon_ = *image.ToImageSkia();
 115   }
 116 }
 117
 118 void ExtensionUninstallDialog::OnImageLoaded(const std::string& extension_id,
 119                                              const gfx::Image& image) {
 120   const extensions::Extension* target_extension =
 121       extensions::ExtensionRegistry::Get(profile_)->GetExtensionById(
 122           extension_id, extensions::ExtensionRegistry::EVERYTHING);
 123   if (!target_extension) {
 124     delegate_->ExtensionUninstallCanceled();
 125     return;
 126   }
 127
 128   SetIcon(image);
 129
 130   // Show the dialog unless the browser has been closed while we were waiting
 131   // for the image.
 132   DCHECK(state_ == kImageIsLoading || state_ == kBrowserIsClosing);
 133   if (state_ == kImageIsLoading) {
 134     state_ = kDialogIsShowing;
 135     Show();
 136   }
 137 }
 138
 139 void ExtensionUninstallDialog::Observe(
 140     int type,
 141     const content::NotificationSource& source,
 142     const content::NotificationDetails& details) {
 143   DCHECK(type == chrome::NOTIFICATION_BROWSER_CLOSED);
 144
 145   browser_ = NULL;
 146   // If the browser is closed while waiting for the image, we need to send a
 147   // "cancel" event here, because there will not be another opportunity to
 148   // notify the delegate of the cancellation as we won't open the dialog.
 149   if (state_ == kImageIsLoading) {
 150     state_ = kBrowserIsClosing;
 151     delegate_->ExtensionUninstallCanceled();
 152   }
 153 }
 154
 155 std::string ExtensionUninstallDialog::GetHeadingText() {
 156   if (triggering_extension_) {
 157     return l10n_util::GetStringFUTF8(
 158         IDS_EXTENSION_PROGRAMMATIC_UNINSTALL_PROMPT_HEADING,
 159         base::UTF8ToUTF16(triggering_extension_->name()),
 160         base::UTF8ToUTF16(extension_->name()));
 161   }
 162   return l10n_util::GetStringFUTF8(IDS_EXTENSION_UNINSTALL_PROMPT_HEADING,
 163                                    base::UTF8ToUTF16(extension_->name()));
 164 }