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/extensions/extension_util.h"
  12 #include "chrome/browser/profiles/profile.h"
  13 #include "extensions/browser/extension_registry.h"
  14 #include "extensions/browser/image_loader.h"
  15 #include "extensions/common/constants.h"
  16 #include "extensions/common/extension.h"
  17 #include "extensions/common/extension_icon_set.h"
  18 #include "extensions/common/extension_resource.h"
  19 #include "extensions/common/manifest_handlers/icons_handler.h"
  20 #include "grit/generated_resources.h"
  21 #include "grit/theme_resources.h"
  22 #include "ui/base/l10n/l10n_util.h"
  23 #include "ui/gfx/image/image.h"
  24 #include "ui/gfx/image/image_skia.h"
  25
  26 namespace extensions {
  27
  28 namespace {
  29
  30 // Returns bitmap for the default icon with size equal to the default icon's
  31 // pixel size under maximal supported scale factor.
  32 SkBitmap GetDefaultIconBitmapForMaxScaleFactor(bool is_app) {
  33   const gfx::ImageSkia& image =
  34       is_app ? util::GetDefaultAppIcon() : util::GetDefaultExtensionIcon();
  35   return image.GetRepresentation(
  36       gfx::ImageSkia::GetMaxSupportedScale()).sk_bitmap();
  37 }
  38
  39 }  // namespace
  40
  41 ExtensionUninstallDialog::ExtensionUninstallDialog(
  42     Profile* profile,
  43     gfx::NativeWindow parent,
  44     ExtensionUninstallDialog::Delegate* delegate)
  45     : profile_(profile),
  46       parent_(parent),
  47       delegate_(delegate),
  48       extension_(NULL),
  49       triggering_extension_(NULL),
  50       ui_loop_(base::MessageLoop::current()) {
  51 }
  52
  53 ExtensionUninstallDialog::~ExtensionUninstallDialog() {
  54 }
  55
  56 void ExtensionUninstallDialog::ConfirmProgrammaticUninstall(
  57     const Extension* extension,
  58     const Extension* triggering_extension) {
  59   triggering_extension_ = triggering_extension;
  60   ConfirmUninstall(extension);
  61 }
  62
  63 void ExtensionUninstallDialog::ConfirmUninstall(const Extension* extension) {
  64   DCHECK(ui_loop_ == base::MessageLoop::current());
  65   extension_ = extension;
  66   // Bookmark apps may not have 128x128 icons so accept 64x64 icons.
  67   const int icon_size = extension_->from_bookmark()
  68                             ? extension_misc::EXTENSION_ICON_SMALL * 2
  69                             : extension_misc::EXTENSION_ICON_LARGE;
  70   ExtensionResource image = IconsInfo::GetIconResource(
  71       extension_, icon_size, ExtensionIconSet::MATCH_BIGGER);
  72
  73   // Load the image asynchronously. The response will be sent to OnImageLoaded.
  74   ImageLoader* loader = ImageLoader::Get(profile_);
  75
  76   SetIcon(gfx::Image());
  77   std::vector<ImageLoader::ImageRepresentation> images_list;
  78   images_list.push_back(ImageLoader::ImageRepresentation(
  79       image,
  80       ImageLoader::ImageRepresentation::NEVER_RESIZE,
  81       gfx::Size(),
  82       ui::SCALE_FACTOR_100P));
  83   loader->LoadImagesAsync(extension_,
  84                           images_list,
  85                           base::Bind(&ExtensionUninstallDialog::OnImageLoaded,
  86                                      AsWeakPtr(),
  87                                      extension_->id()));
  88 }
  89
  90 void ExtensionUninstallDialog::SetIcon(const gfx::Image& image) {
  91   if (image.IsEmpty()) {
  92     // Let's set default icon bitmap whose size is equal to the default icon's
  93     // pixel size under maximal supported scale factor. If the bitmap is larger
  94     // than the one we need, it will be scaled down by the ui code.
  95     // TODO(tbarzic): We should use IconImage here and load the required bitmap
  96     //     lazily.
  97     icon_ = gfx::ImageSkia::CreateFrom1xBitmap(
  98         GetDefaultIconBitmapForMaxScaleFactor(extension_->is_app()));
  99   } else {
 100     icon_ = *image.ToImageSkia();
 101   }
 102 }
 103
 104 void ExtensionUninstallDialog::OnImageLoaded(const std::string& extension_id,
 105                                              const gfx::Image& image) {
 106   const Extension* target_extension =
 107       ExtensionRegistry::Get(profile_)
 108           ->GetExtensionById(extension_id, ExtensionRegistry::EVERYTHING);
 109   if (!target_extension) {
 110     delegate_->ExtensionUninstallCanceled();
 111     return;
 112   }
 113
 114   SetIcon(image);
 115   Show();
 116 }
 117
 118 std::string ExtensionUninstallDialog::GetHeadingText() {
 119   if (triggering_extension_) {
 120     return l10n_util::GetStringFUTF8(
 121         IDS_EXTENSION_PROGRAMMATIC_UNINSTALL_PROMPT_HEADING,
 122         base::UTF8ToUTF16(triggering_extension_->name()),
 123         base::UTF8ToUTF16(extension_->name()));
 124   }
 125   return l10n_util::GetStringFUTF8(IDS_EXTENSION_UNINSTALL_PROMPT_HEADING,
 126                                    base::UTF8ToUTF16(extension_->name()));
 127 }
 128
 129 }  // namespace extensions