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      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/views/create_application_shortcut_view.h"
      6 
      7 #include <algorithm>
      8 #include <cmath>
      9 
     10 #include "base/bind.h"
     11 #include "base/bind_helpers.h"
     12 #include "base/prefs/pref_service.h"
     13 #include "base/strings/utf_string_conversions.h"
     14 #include "base/win/windows_version.h"
     15 #include "chrome/browser/extensions/tab_helper.h"
     16 #include "chrome/browser/profiles/profile.h"
     17 #include "chrome/browser/ui/browser.h"
     18 #include "chrome/browser/ui/browser_commands.h"
     19 #include "chrome/browser/ui/browser_finder.h"
     20 #include "chrome/browser/ui/views/constrained_window_views.h"
     21 #include "chrome/browser/ui/webui/extensions/extension_icon_source.h"
     22 #include "chrome/browser/web_applications/web_app.h"
     23 #include "chrome/common/chrome_constants.h"
     24 #include "chrome/common/pref_names.h"
     25 #include "chrome/grit/generated_resources.h"
     26 #include "chrome/grit/locale_settings.h"
     27 #include "components/favicon_base/select_favicon_frames.h"
     28 #include "content/public/browser/render_view_host.h"
     29 #include "content/public/browser/render_widget_host_view.h"
     30 #include "content/public/browser/web_contents.h"
     31 #include "extensions/common/extension.h"
     32 #include "net/base/load_flags.h"
     33 #include "net/url_request/url_request.h"
     34 #include "skia/ext/image_operations.h"
     35 #include "third_party/skia/include/core/SkBitmap.h"
     36 #include "third_party/skia/include/core/SkPaint.h"
     37 #include "third_party/skia/include/core/SkRect.h"
     38 #include "ui/base/l10n/l10n_util.h"
     39 #include "ui/base/layout.h"
     40 #include "ui/base/resource/resource_bundle.h"
     41 #include "ui/gfx/canvas.h"
     42 #include "ui/gfx/codec/png_codec.h"
     43 #include "ui/gfx/image/image_family.h"
     44 #include "ui/gfx/image/image_skia.h"
     45 #include "ui/views/controls/button/checkbox.h"
     46 #include "ui/views/controls/image_view.h"
     47 #include "ui/views/controls/label.h"
     48 #include "ui/views/layout/grid_layout.h"
     49 #include "ui/views/layout/layout_constants.h"
     50 #include "ui/views/widget/widget.h"
     51 #include "ui/views/window/dialog_client_view.h"
     52 #include "url/gurl.h"
     53 
     54 namespace {
     55 
     56 const int kIconPreviewSizePixels = 32;
     57 
     58 // AppInfoView shows the application icon and title.
     59 class AppInfoView : public views::View {
     60  public:
     61   AppInfoView(const base::string16& title,
     62               const base::string16& description,
     63               const gfx::ImageFamily& icon);
     64 
     65   // Updates the title/description of the web app.
     66   void UpdateText(const base::string16& title,
     67                   const base::string16& description);
     68 
     69   // Updates the icon of the web app.
     70   void UpdateIcon(const gfx::ImageFamily& image);
     71 
     72   // Overridden from views::View:
     73   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
     74 
     75  private:
     76   // Initializes the controls
     77   void Init(const base::string16& title,
     78             const base::string16& description, const gfx::ImageFamily& icon);
     79 
     80   // Creates or updates description label.
     81   void PrepareDescriptionLabel(const base::string16& description);
     82 
     83   // Sets up layout manager.
     84   void SetupLayout();
     85 
     86   views::ImageView* icon_;
     87   views::Label* title_;
     88   views::Label* description_;
     89 };
     90 
     91 AppInfoView::AppInfoView(const base::string16& title,
     92                          const base::string16& description,
     93                          const gfx::ImageFamily& icon)
     94     : icon_(NULL),
     95       title_(NULL),
     96       description_(NULL) {
     97   Init(title, description, icon);
     98 }
     99 
    100 void AppInfoView::Init(const base::string16& title_text,
    101                        const base::string16& description_text,
    102                        const gfx::ImageFamily& icon) {
    103   icon_ = new views::ImageView();
    104   UpdateIcon(icon);
    105   icon_->SetImageSize(gfx::Size(kIconPreviewSizePixels,
    106                                 kIconPreviewSizePixels));
    107 
    108   title_ = new views::Label(
    109       title_text,
    110       ui::ResourceBundle::GetSharedInstance().GetFontList(
    111           ui::ResourceBundle::BoldFont));
    112   title_->SetMultiLine(true);
    113   title_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
    114 
    115   PrepareDescriptionLabel(description_text);
    116 
    117   SetupLayout();
    118 }
    119 
    120 void AppInfoView::PrepareDescriptionLabel(const base::string16& description) {
    121   // Do not make space for the description if it is empty.
    122   if (description.empty())
    123     return;
    124 
    125   const size_t kMaxLength = 200;
    126   const base::string16 kEllipsis(base::ASCIIToUTF16(" ... "));
    127 
    128   base::string16 text = description;
    129   if (text.length() > kMaxLength) {
    130     text = text.substr(0, kMaxLength);
    131     text += kEllipsis;
    132   }
    133 
    134   if (description_) {
    135     description_->SetText(text);
    136   } else {
    137     description_ = new views::Label(text);
    138     description_->SetMultiLine(true);
    139     description_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
    140   }
    141 }
    142 
    143 void AppInfoView::SetupLayout() {
    144   views::GridLayout* layout = views::GridLayout::CreatePanel(this);
    145   SetLayoutManager(layout);
    146 
    147   static const int kColumnSetId = 0;
    148   views::ColumnSet* column_set = layout->AddColumnSet(kColumnSetId);
    149   column_set->AddColumn(views::GridLayout::CENTER, views::GridLayout::LEADING,
    150                         20.0f, views::GridLayout::FIXED,
    151                         kIconPreviewSizePixels, kIconPreviewSizePixels);
    152   column_set->AddColumn(views::GridLayout::FILL, views::GridLayout::CENTER,
    153                         80.0f, views::GridLayout::USE_PREF, 0, 0);
    154 
    155   layout->StartRow(0, kColumnSetId);
    156   layout->AddView(icon_, 1, description_ ? 2 : 1);
    157   layout->AddView(title_);
    158 
    159   if (description_) {
    160     layout->StartRow(0, kColumnSetId);
    161     layout->SkipColumns(1);
    162     layout->AddView(description_);
    163   }
    164 }
    165 
    166 void AppInfoView::UpdateText(const base::string16& title,
    167                              const base::string16& description) {
    168   title_->SetText(title);
    169   PrepareDescriptionLabel(description);
    170 
    171   SetupLayout();
    172 }
    173 
    174 void AppInfoView::UpdateIcon(const gfx::ImageFamily& image) {
    175   // Get the icon closest to the desired preview size.
    176   const gfx::Image* icon = image.GetBest(kIconPreviewSizePixels,
    177                                          kIconPreviewSizePixels);
    178   if (!icon || icon->IsEmpty())
    179     // The family has no icons. Leave the image blank.
    180     return;
    181   const SkBitmap& bitmap = *icon->ToSkBitmap();
    182   if (bitmap.width() == kIconPreviewSizePixels &&
    183       bitmap.height() == kIconPreviewSizePixels) {
    184     icon_->SetImage(gfx::ImageSkia::CreateFrom1xBitmap(bitmap));
    185   } else {
    186     // Resize the image to the desired size.
    187     SkBitmap resized_bitmap = skia::ImageOperations::Resize(
    188         bitmap, skia::ImageOperations::RESIZE_LANCZOS3,
    189         kIconPreviewSizePixels, kIconPreviewSizePixels);
    190 
    191     icon_->SetImage(gfx::ImageSkia::CreateFrom1xBitmap(resized_bitmap));
    192   }
    193 }
    194 
    195 void AppInfoView::OnPaint(gfx::Canvas* canvas) {
    196   gfx::Rect bounds = GetLocalBounds();
    197 
    198   SkRect border_rect = {
    199     SkIntToScalar(bounds.x()),
    200     SkIntToScalar(bounds.y()),
    201     SkIntToScalar(bounds.right()),
    202     SkIntToScalar(bounds.bottom())
    203   };
    204 
    205   SkPaint border_paint;
    206   border_paint.setAntiAlias(true);
    207   border_paint.setARGB(0xFF, 0xC8, 0xC8, 0xC8);
    208 
    209   canvas->sk_canvas()->drawRoundRect(border_rect, SkIntToScalar(2),
    210                                      SkIntToScalar(2), border_paint);
    211 
    212   SkRect inner_rect = {
    213     border_rect.fLeft + SkDoubleToScalar(0.5),
    214     border_rect.fTop + SkDoubleToScalar(0.5),
    215     border_rect.fRight - SkDoubleToScalar(0.5),
    216     border_rect.fBottom - SkDoubleToScalar(0.5),
    217   };
    218 
    219   SkPaint inner_paint;
    220   inner_paint.setAntiAlias(true);
    221   inner_paint.setARGB(0xFF, 0xF8, 0xF8, 0xF8);
    222   canvas->sk_canvas()->drawRoundRect(inner_rect, SkDoubleToScalar(1.5),
    223                                      SkDoubleToScalar(1.5), inner_paint);
    224 }
    225 
    226 }  // namespace
    227 
    228 namespace chrome {
    229 
    230 void ShowCreateWebAppShortcutsDialog(gfx::NativeWindow parent_window,
    231                                      content::WebContents* web_contents) {
    232   CreateBrowserModalDialogViews(
    233       new CreateUrlApplicationShortcutView(web_contents),
    234       parent_window)->Show();
    235 }
    236 
    237 void ShowCreateChromeAppShortcutsDialog(
    238     gfx::NativeWindow parent_window,
    239     Profile* profile,
    240     const extensions::Extension* app,
    241     const base::Callback<void(bool)>& close_callback) {
    242   CreateBrowserModalDialogViews(
    243       new CreateChromeApplicationShortcutView(profile, app, close_callback),
    244       parent_window)->Show();
    245 }
    246 
    247 }  // namespace chrome
    248 
    249 CreateApplicationShortcutView::CreateApplicationShortcutView(Profile* profile)
    250     : profile_(profile),
    251       app_info_(NULL),
    252       create_shortcuts_label_(NULL),
    253       desktop_check_box_(NULL),
    254       menu_check_box_(NULL),
    255       quick_launch_check_box_(NULL) {}
    256 
    257 CreateApplicationShortcutView::~CreateApplicationShortcutView() {}
    258 
    259 void CreateApplicationShortcutView::InitControls(DialogLayout dialog_layout) {
    260   if (dialog_layout == DIALOG_LAYOUT_URL_SHORTCUT) {
    261     app_info_ = new AppInfoView(shortcut_info_.title,
    262                                 shortcut_info_.description,
    263                                 shortcut_info_.favicon);
    264   }
    265   create_shortcuts_label_ = new views::Label(
    266       l10n_util::GetStringUTF16(IDS_CREATE_SHORTCUTS_LABEL));
    267   create_shortcuts_label_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
    268 
    269   desktop_check_box_ = AddCheckbox(
    270       l10n_util::GetStringUTF16(IDS_CREATE_SHORTCUTS_DESKTOP_CHKBOX),
    271       profile_->GetPrefs()->GetBoolean(prefs::kWebAppCreateOnDesktop));
    272 
    273   menu_check_box_ = NULL;
    274   quick_launch_check_box_ = NULL;
    275 
    276 #if defined(OS_WIN)
    277   // Do not allow creating shortcuts on the Start Screen for Windows 8.
    278   if (base::win::GetVersion() < base::win::VERSION_WIN8) {
    279     menu_check_box_ = AddCheckbox(
    280         l10n_util::GetStringUTF16(IDS_CREATE_SHORTCUTS_START_MENU_CHKBOX),
    281         profile_->GetPrefs()->GetBoolean(prefs::kWebAppCreateInAppsMenu));
    282   }
    283 
    284   quick_launch_check_box_ = AddCheckbox(
    285       (base::win::GetVersion() >= base::win::VERSION_WIN7) ?
    286         l10n_util::GetStringUTF16(IDS_PIN_TO_TASKBAR_CHKBOX) :
    287         l10n_util::GetStringUTF16(
    288             IDS_CREATE_SHORTCUTS_QUICK_LAUNCH_BAR_CHKBOX),
    289       profile_->GetPrefs()->GetBoolean(prefs::kWebAppCreateInQuickLaunchBar));
    290 #elif defined(OS_POSIX)
    291   menu_check_box_ = AddCheckbox(
    292       l10n_util::GetStringUTF16(IDS_CREATE_SHORTCUTS_MENU_CHKBOX),
    293       profile_->GetPrefs()->GetBoolean(prefs::kWebAppCreateInAppsMenu));
    294 #endif
    295 
    296   // Layout controls
    297   views::GridLayout* layout = views::GridLayout::CreatePanel(this);
    298   SetLayoutManager(layout);
    299 
    300   static const int kHeaderColumnSetId = 0;
    301   views::ColumnSet* column_set = layout->AddColumnSet(kHeaderColumnSetId);
    302   column_set->AddColumn(views::GridLayout::FILL, views::GridLayout::CENTER,
    303                         100.0f, views::GridLayout::FIXED, 0, 0);
    304 
    305   static const int kTableColumnSetId = 1;
    306   column_set = layout->AddColumnSet(kTableColumnSetId);
    307   column_set->AddPaddingColumn(0, views::kPanelHorizIndentation);
    308   column_set->AddColumn(views::GridLayout::FILL, views::GridLayout::FILL,
    309                         100.0f, views::GridLayout::USE_PREF, 0, 0);
    310 
    311   if (app_info_) {
    312     layout->StartRow(0, kHeaderColumnSetId);
    313     layout->AddView(app_info_);
    314     layout->AddPaddingRow(0, views::kPanelSubVerticalSpacing);
    315   }
    316 
    317   layout->StartRow(0, kHeaderColumnSetId);
    318   layout->AddView(create_shortcuts_label_);
    319 
    320   layout->AddPaddingRow(0, views::kLabelToControlVerticalSpacing);
    321   layout->StartRow(0, kTableColumnSetId);
    322   layout->AddView(desktop_check_box_);
    323 
    324   if (menu_check_box_ != NULL) {
    325     layout->AddPaddingRow(0, views::kRelatedControlSmallVerticalSpacing);
    326     layout->StartRow(0, kTableColumnSetId);
    327     layout->AddView(menu_check_box_);
    328   }
    329 
    330   if (quick_launch_check_box_ != NULL) {
    331     layout->AddPaddingRow(0, views::kRelatedControlSmallVerticalSpacing);
    332     layout->StartRow(0, kTableColumnSetId);
    333     layout->AddView(quick_launch_check_box_);
    334   }
    335 }
    336 
    337 gfx::Size CreateApplicationShortcutView::GetPreferredSize() const {
    338   // TODO(evanm): should this use IDS_CREATE_SHORTCUTS_DIALOG_WIDTH_CHARS?
    339   static const int kDialogWidth = 360;
    340   int height = GetLayoutManager()->GetPreferredHeightForWidth(this,
    341       kDialogWidth);
    342   return gfx::Size(kDialogWidth, height);
    343 }
    344 
    345 base::string16 CreateApplicationShortcutView::GetDialogButtonLabel(
    346     ui::DialogButton button) const {
    347   if (button == ui::DIALOG_BUTTON_OK)
    348     return l10n_util::GetStringUTF16(IDS_CREATE_SHORTCUTS_COMMIT);
    349   return views::DialogDelegateView::GetDialogButtonLabel(button);
    350 }
    351 
    352 bool CreateApplicationShortcutView::IsDialogButtonEnabled(
    353     ui::DialogButton button) const {
    354   if (button == ui::DIALOG_BUTTON_OK)
    355     return desktop_check_box_->checked() ||
    356            ((menu_check_box_ != NULL) &&
    357             menu_check_box_->checked()) ||
    358            ((quick_launch_check_box_ != NULL) &&
    359             quick_launch_check_box_->checked());
    360 
    361   return true;
    362 }
    363 
    364 ui::ModalType CreateApplicationShortcutView::GetModalType() const {
    365   return ui::MODAL_TYPE_WINDOW;
    366 }
    367 
    368 base::string16 CreateApplicationShortcutView::GetWindowTitle() const {
    369   return l10n_util::GetStringUTF16(IDS_CREATE_SHORTCUTS_TITLE);
    370 }
    371 
    372 bool CreateApplicationShortcutView::Accept() {
    373   if (!IsDialogButtonEnabled(ui::DIALOG_BUTTON_OK))
    374     return false;
    375 
    376   web_app::ShortcutLocations creation_locations;
    377   creation_locations.on_desktop = desktop_check_box_->checked();
    378   if (menu_check_box_ != NULL && menu_check_box_->checked()) {
    379     creation_locations.applications_menu_location =
    380         create_in_chrome_apps_subdir_ ?
    381             web_app::APP_MENU_LOCATION_SUBDIR_CHROMEAPPS :
    382             web_app::APP_MENU_LOCATION_ROOT;
    383   }
    384 
    385 #if defined(OS_WIN)
    386   creation_locations.in_quick_launch_bar = quick_launch_check_box_ == NULL ?
    387       NULL : quick_launch_check_box_->checked();
    388 #elif defined(OS_POSIX)
    389   // Create shortcut in Mac dock or as Linux (gnome/kde) application launcher
    390   // are not implemented yet.
    391   creation_locations.in_quick_launch_bar = false;
    392 #endif
    393 
    394   web_app::CreateShortcutsWithInfo(web_app::SHORTCUT_CREATION_BY_USER,
    395                                    creation_locations,
    396                                    shortcut_info_,
    397                                    file_handlers_info_);
    398   return true;
    399 }
    400 
    401 views::Checkbox* CreateApplicationShortcutView::AddCheckbox(
    402     const base::string16& text, bool checked) {
    403   views::Checkbox* checkbox = new views::Checkbox(text);
    404   checkbox->SetChecked(checked);
    405   checkbox->set_listener(this);
    406   return checkbox;
    407 }
    408 
    409 void CreateApplicationShortcutView::ButtonPressed(views::Button* sender,
    410                                                   const ui::Event& event) {
    411   if (sender == desktop_check_box_) {
    412     profile_->GetPrefs()->SetBoolean(prefs::kWebAppCreateOnDesktop,
    413                                      desktop_check_box_->checked());
    414   } else if (sender == menu_check_box_) {
    415     profile_->GetPrefs()->SetBoolean(prefs::kWebAppCreateInAppsMenu,
    416                                      menu_check_box_->checked());
    417   } else if (sender == quick_launch_check_box_) {
    418     profile_->GetPrefs()->SetBoolean(prefs::kWebAppCreateInQuickLaunchBar,
    419                                      quick_launch_check_box_->checked());
    420   }
    421 
    422   // When no checkbox is checked we should not have the action button enabled.
    423   GetDialogClientView()->UpdateDialogButtons();
    424 }
    425 
    426 CreateUrlApplicationShortcutView::CreateUrlApplicationShortcutView(
    427     content::WebContents* web_contents)
    428     : CreateApplicationShortcutView(
    429           Profile::FromBrowserContext(web_contents->GetBrowserContext())),
    430       web_contents_(web_contents),
    431       pending_download_id_(-1),
    432       weak_ptr_factory_(this)  {
    433   web_app::GetShortcutInfoForTab(web_contents_, &shortcut_info_);
    434   const WebApplicationInfo& app_info =
    435       extensions::TabHelper::FromWebContents(web_contents_)->web_app_info();
    436   if (!app_info.icons.empty()) {
    437     web_app::GetIconsInfo(app_info, &unprocessed_icons_);
    438     FetchIcon();
    439   }
    440 
    441   // Create URL app shortcuts in the top-level menu.
    442   create_in_chrome_apps_subdir_ = false;
    443 
    444   InitControls(DIALOG_LAYOUT_URL_SHORTCUT);
    445 }
    446 
    447 CreateUrlApplicationShortcutView::~CreateUrlApplicationShortcutView() {
    448 }
    449 
    450 bool CreateUrlApplicationShortcutView::Accept() {
    451   if (!CreateApplicationShortcutView::Accept())
    452     return false;
    453 
    454   // Get the smallest icon in the icon family (should have only 1).
    455   const gfx::Image* icon = shortcut_info_.favicon.GetBest(0, 0);
    456   SkBitmap bitmap = icon ? icon->AsBitmap() : SkBitmap();
    457   extensions::TabHelper::FromWebContents(web_contents_)->SetAppIcon(bitmap);
    458   Browser* browser = chrome::FindBrowserWithWebContents(web_contents_);
    459   if (browser)
    460     chrome::ConvertTabToAppWindow(browser, web_contents_);
    461   return true;
    462 }
    463 
    464 void CreateUrlApplicationShortcutView::FetchIcon() {
    465   // There should only be fetch job at a time.
    466   DCHECK_EQ(-1, pending_download_id_);
    467 
    468   if (unprocessed_icons_.empty())  // No icons to fetch.
    469     return;
    470 
    471   int preferred_size = std::max(unprocessed_icons_.back().width,
    472                                 unprocessed_icons_.back().height);
    473   pending_download_id_ = web_contents_->DownloadImage(
    474       unprocessed_icons_.back().url,
    475       true,  // is a favicon
    476       0,  // no maximum size
    477       base::Bind(&CreateUrlApplicationShortcutView::DidDownloadFavicon,
    478                  weak_ptr_factory_.GetWeakPtr(),
    479                  preferred_size));
    480 
    481   unprocessed_icons_.pop_back();
    482 }
    483 
    484 void CreateUrlApplicationShortcutView::DidDownloadFavicon(
    485     int requested_size,
    486     int id,
    487     int http_status_code,
    488     const GURL& image_url,
    489     const std::vector<SkBitmap>& bitmaps,
    490     const std::vector<gfx::Size>& original_bitmap_sizes) {
    491   if (id != pending_download_id_)
    492     return;
    493   pending_download_id_ = -1;
    494 
    495   gfx::ImageSkia image_skia = CreateFaviconImageSkia(
    496       bitmaps,
    497       original_bitmap_sizes,
    498       requested_size,
    499       NULL);
    500   if (!image_skia.isNull()) {
    501     shortcut_info_.favicon.Add(image_skia);
    502     static_cast<AppInfoView*>(app_info_)->UpdateIcon(shortcut_info_.favicon);
    503   } else {
    504     FetchIcon();
    505   }
    506 }
    507 
    508 CreateChromeApplicationShortcutView::CreateChromeApplicationShortcutView(
    509     Profile* profile,
    510     const extensions::Extension* app,
    511     const base::Callback<void(bool)>& close_callback)
    512         : CreateApplicationShortcutView(profile),
    513           close_callback_(close_callback),
    514           weak_ptr_factory_(this) {
    515   // Place Chrome app shortcuts in the "Chrome Apps" submenu.
    516   create_in_chrome_apps_subdir_ = true;
    517 
    518   InitControls(DIALOG_LAYOUT_APP_SHORTCUT);
    519 
    520   // Get shortcut, icon and file handler information; they are needed for
    521   // creating the shortcut.
    522   web_app::GetInfoForApp(
    523       app,
    524       profile,
    525       base::Bind(&CreateChromeApplicationShortcutView::OnAppInfoLoaded,
    526                  weak_ptr_factory_.GetWeakPtr()));
    527 }
    528 
    529 CreateChromeApplicationShortcutView::~CreateChromeApplicationShortcutView() {}
    530 
    531 bool CreateChromeApplicationShortcutView::Accept() {
    532   if (!close_callback_.is_null())
    533     close_callback_.Run(true);
    534   return CreateApplicationShortcutView::Accept();
    535 }
    536 
    537 bool CreateChromeApplicationShortcutView::Cancel() {
    538   if (!close_callback_.is_null())
    539     close_callback_.Run(false);
    540   return CreateApplicationShortcutView::Cancel();
    541 }
    542 
    543 void CreateChromeApplicationShortcutView::OnAppInfoLoaded(
    544     const web_app::ShortcutInfo& shortcut_info,
    545     const extensions::FileHandlersInfo& file_handlers_info) {
    546   shortcut_info_ = shortcut_info;
    547   file_handlers_info_ = file_handlers_info;
    548 }
    549