Extend App Info dialog to include app shortcut and list of permissions

chrome/browser/ui/views/apps/app_info_dialog_views.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/views/apps/app_info_dialog_views.h"
 
+#include "base/bind.h"
 #include "base/strings/utf_string_conversions.h"
+#include "chrome/browser/extensions/image_loader.h"
+#include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/apps/app_info_dialog.h"
 #include "chrome/browser/ui/views/constrained_window_views.h"
+#include "chrome/common/extensions/extension_constants.h"
+#include "chrome/common/extensions/extension_icon_set.h"
+#include "chrome/common/extensions/manifest_handlers/icons_handler.h"
 #include "extensions/common/extension.h"
+#include "extensions/common/permissions/permission_message_provider.h"
+#include "extensions/common/permissions/permission_set.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/views/controls/label.h"
 #include "ui/views/layout/grid_layout.h"
 #include "ui/views/layout/layout_constants.h"
 #include "ui/views/widget/widget.h"
 
+// Size of extension icon in top left of dialog.
+const int kIconSize = 64;
+
 void ShowChromeAppInfoDialog(gfx::NativeWindow parent_window,
                              Profile* profile,
                              const extensions::Extension* app,
                              const base::Closure& close_callback) {
   CreateBrowserModalDialogViews(new AppInfoView(profile, app, close_callback),
                                 parent_window)->Show();
 }
 
+PermissionsScrollView::PermissionsScrollView(int min_height,
+                                             int max_height,
+                                             const extensions::Extension* app)
+    : message_center::BoundedScrollView(min_height, max_height) {
+  inner_scrollable_view = new views::View();
+  this->SetContents(inner_scrollable_view);
+
+  // Get the permission messages for the app
+  scoped_refptr<const extensions::PermissionSet> permissions =
+      app->GetActivePermissions();
+  extensions::Manifest::Type extension_type =
+      app ? app->GetType() : extensions::Manifest::TYPE_UNKNOWN;

[benwells, 2014/02/19 00:23:29]

I don't think app can be NULL here (you deref it unconditionally just above), so
there is no need for the app ? check.

[sashab, 2014/02/19 03:03:00]

Yup, you're right, thanks for pointing this out. I actually cleaned up the code
a little after this change - I noticed a lot of variables were no longer needed.

+  std::vector<base::string16> permission_messages =
+      extensions::PermissionMessageProvider::Get()->GetWarningMessages(
+          permissions, extension_type);
+
+  // Create the layout
+  views::GridLayout* layout =
+      views::GridLayout::CreatePanel(inner_scrollable_view);
+  inner_scrollable_view->SetLayoutManager(layout);
+
+  // Create 2 columns: one for the bullet, one for the bullet text
+  static const int kPermissionBulletsColumnSetId = 1;
+  views::ColumnSet* permission_bullets_column_set =
+      layout->AddColumnSet(kPermissionBulletsColumnSetId);
+  permission_bullets_column_set->AddPaddingColumn(0, 10);
+  permission_bullets_column_set->AddColumn(views::GridLayout::LEADING,
+                                           views::GridLayout::LEADING,
+                                           0,
+                                           views::GridLayout::USE_PREF,
+                                           0,  // no fixed width
+                                           0);
+  permission_bullets_column_set->AddPaddingColumn(0, 5);
+  permission_bullets_column_set->AddColumn(views::GridLayout::LEADING,
+                                           views::GridLayout::LEADING,
+                                           0,
+                                           views::GridLayout::USE_PREF,
+                                           0,  // no fixed width
+                                           0);
+
+  // Add permissions to scrollable view
+  for (std::vector<base::string16>::const_iterator it =
+           permission_messages.begin();
+       it != permission_messages.end();
+       ++it) {
+    views::Label* permission_label = new views::Label(*it);
+
+    permission_label->SetMultiLine(true);
+    permission_label->SetHorizontalAlignment(gfx::ALIGN_LEFT);
+    permission_label->SizeToFit(250);
+
+    layout->StartRow(0, kPermissionBulletsColumnSetId);
+    // Extract only the bullet from the IDS_EXTENSION_PERMISSION_LINE text.
+    layout->AddView(new views::Label(l10n_util::GetStringFUTF16(
+        IDS_EXTENSION_PERMISSION_LINE, base::string16())));
+    // Place the text second, so multi-lined permissions line up below the
+    // bullet.
+    layout->AddView(permission_label);
+
+    layout->AddPaddingRow(0, views::kRelatedControlVerticalSpacing);
+  }
+}
+
+PermissionsScrollView::~PermissionsScrollView() {}
+
 AppInfoView::AppInfoView(Profile* profile,
                          const extensions::Extension* app,
                          const base::Closure& close_callback)
     : profile_(profile),
       app_name_label(NULL),
       app_description_label(NULL),
       app_(app),
-      close_callback_(close_callback) {
+      close_callback_(close_callback),
+      weak_ptr_factory_(this) {
   // Create controls
   app_name_label = new views::Label(base::UTF8ToUTF16(app_->name()));
   app_name_label->SetHorizontalAlignment(gfx::ALIGN_LEFT);
 
   app_description_label =
       new views::Label(base::UTF8ToUTF16(app_->description()));
   app_description_label->SetHorizontalAlignment(gfx::ALIGN_LEFT);
 
-  // Layout controls
+  app_version_label =
+      new views::Label(base::UTF8ToUTF16(app_->VersionString()));
+  app_version_label->SetHorizontalAlignment(gfx::ALIGN_LEFT);
+
+  app_icon = new views::ImageView();
+  app_icon->SetImageSize(gfx::Size(kIconSize, kIconSize));
+
+  permission_list_heading = new views::Label(
+      l10n_util::GetStringUTF16(IDS_EXTENSION_PROMPT_CAN_ACCESS));
+  permission_list_heading->SetHorizontalAlignment(gfx::ALIGN_LEFT);
+
+  permissions_scroll_view = new PermissionsScrollView(0, 100, app);
+
+  // Load the app icon asynchronously. For the response, check OnImageLoaded.
+  extensions::ExtensionResource image = extensions::IconsInfo::GetIconResource(
+      app,
+      extension_misc::EXTENSION_ICON_LARGE,
+      ExtensionIconSet::MATCH_BIGGER);
+  int pixel_size =
+      static_cast<int>(kIconSize * gfx::ImageSkia::GetMaxSupportedScale());
+  extensions::ImageLoader::Get(profile)
+      ->LoadImageAsync(app,
+                       image,
+                       gfx::Size(pixel_size, pixel_size),
+                       base::Bind(&AppInfoView::OnAppImageLoaded, AsWeakPtr()));
+
+  // Create the layout
   views::GridLayout* layout = views::GridLayout::CreatePanel(this);
   SetLayoutManager(layout);
 
+  // Header column set with app icon and information
   static const int kHeaderColumnSetId = 0;
-  views::ColumnSet* column_set = layout->AddColumnSet(kHeaderColumnSetId);
-  column_set->AddColumn(views::GridLayout::FILL,
-                        views::GridLayout::CENTER,
-                        100.0f,
-                        views::GridLayout::FIXED,
-                        0,
-                        0);
+  views::ColumnSet* header_column_set =
+      layout->AddColumnSet(kHeaderColumnSetId);
+  header_column_set->AddColumn(views::GridLayout::FILL,
+                               views::GridLayout::CENTER,
+                               0,
+                               views::GridLayout::FIXED,
+                               kIconSize,
+                               0);
+  header_column_set->AddPaddingColumn(0,
+                                      views::kRelatedControlHorizontalSpacing);
+  header_column_set->AddColumn(views::GridLayout::FILL,
+                               views::GridLayout::CENTER,
+                               100.0f,
+                               views::GridLayout::FIXED,
+                               0,
+                               0);
+
+  // Column set with scrollable permissions
+  static const int kPermissionsColumnSetId = 1;
+  views::ColumnSet* permissions_column_set =
+      layout->AddColumnSet(kPermissionsColumnSetId);
+  permissions_column_set->AddColumn(views::GridLayout::FILL,
+                                    views::GridLayout::CENTER,
+                                    100.0f,
+                                    views::GridLayout::FIXED,
+                                    0,
+                                    0);
+
+  // The app icon takes up 3 rows
+  layout->StartRow(0, kHeaderColumnSetId);
+  layout->AddView(app_icon, 1, 3);
+
+  // The app information fills up the right side of the icon
+  layout->AddView(app_name_label);
 
   layout->StartRow(0, kHeaderColumnSetId);
-  layout->AddView(app_name_label);
+  layout->SkipColumns(1);
+  layout->AddView(app_version_label);
 
-  layout->AddPaddingRow(0, views::kPanelSubVerticalSpacing);
   layout->StartRow(0, kHeaderColumnSetId);
+  layout->SkipColumns(1);
   layout->AddView(app_description_label);
+
+  layout->AddPaddingRow(0, views::kRelatedControlVerticalSpacing);
+
+  layout->StartRow(0, kPermissionsColumnSetId);
+  layout->AddView(permission_list_heading);
+
+  layout->AddPaddingRow(0, views::kRelatedControlVerticalSpacing);
+
+  layout->StartRow(0, kPermissionsColumnSetId);
+  layout->AddView(permissions_scroll_view);
 }
 
 AppInfoView::~AppInfoView() {}
 
 bool AppInfoView::Cancel() {
   if (!close_callback_.is_null())
     close_callback_.Run();
   return true;
 }
 
 gfx::Size AppInfoView::GetPreferredSize() {
   static const int kDialogWidth = 360;
   int height =
       GetLayoutManager()->GetPreferredHeightForWidth(this, kDialogWidth);
   return gfx::Size(kDialogWidth, height);
 }
 
 base::string16 AppInfoView::GetDialogButtonLabel(ui::DialogButton button)
     const {
   if (button == ui::DIALOG_BUTTON_CANCEL) {
     return l10n_util::GetStringUTF16(IDS_APPLICATION_INFO_CLOSE_BUTTON);
   }
   return views::DialogDelegateView::GetDialogButtonLabel(button);
 }
 
-int AppInfoView::GetDialogButtons() const {
-  return ui::DIALOG_BUTTON_CANCEL;
-}
+int AppInfoView::GetDialogButtons() const { return ui::DIALOG_BUTTON_CANCEL; }
 
 bool AppInfoView::IsDialogButtonEnabled(ui::DialogButton button) const {
   return true;
 }
 
 ui::ModalType AppInfoView::GetModalType() const {
   return ui::MODAL_TYPE_WINDOW;
 }
 
 base::string16 AppInfoView::GetWindowTitle() const {
   return l10n_util::GetStringUTF16(IDS_APPLICATION_INFO_TITLE);
 }
+
+void AppInfoView::OnAppImageLoaded(const gfx::Image& image) {
+  const SkBitmap* bitmap = image.ToSkBitmap();
+  if (image.IsEmpty()) {
+    bitmap = &extensions::IconsInfo::GetDefaultAppIcon()
+                  .GetRepresentation(gfx::ImageSkia::GetMaxSupportedScale())
+                  .sk_bitmap();
+  }
+
+  app_icon->SetImage(gfx::ImageSkia::CreateFrom1xBitmap(*bitmap));
+}