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