extensions: Refactor ExtensionInstallUI class.

chrome/browser/extensions/extension_uninstall_dialog.cc

+// Copyright (c) 2011 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/extensions/extension_uninstall_dialog.h"
+
+#include "base/logging.h"
+#include "base/message_loop.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/common/extensions/extension.h"
+#include "chrome/common/extensions/extension_icon_set.h"
+#include "chrome/common/extensions/extension_resource.h"
+#include "grit/generated_resources.h"
+#include "grit/theme_resources.h"
+#include "ui/base/resource/resource_bundle.h"
+
+// Size of extension icon in top left of dialog.
+static const int kIconSize = 69;
+
+ExtensionUninstallDialog::ExtensionUninstallDialog(Profile* profile)
+    : profile_(profile),
+      ui_loop_(MessageLoop::current()),
+      delegate_(NULL),
+      extension_(NULL),
+      ALLOW_THIS_IN_INITIALIZER_LIST(tracker_(this)) {
+}
+
+ExtensionUninstallDialog::~ExtensionUninstallDialog() {
+}
+
+void ExtensionUninstallDialog::ConfirmUninstall(Delegate* delegate,
+                                                const Extension* extension) {
+  DCHECK(ui_loop_ == MessageLoop::current());
+  delegate_ = delegate;
+  extension_ = extension;
+
+  ExtensionResource image =
+      extension_->GetIconResource(Extension::EXTENSION_ICON_LARGE,
+                                  ExtensionIconSet::MATCH_EXACTLY);
+  // Load the image asynchronously. The response will be sent to OnImageLoaded.
+  tracker_.LoadImage(extension_, image,
+                     gfx::Size(kIconSize, kIconSize),
+                     ImageLoadingTracker::DONT_CACHE);
+}
+
+void ExtensionUninstallDialog::SetIcon(SkBitmap* image) {
+  if (image)
+    icon_ = *image;
+  else
+    icon_ = SkBitmap();
+  if (icon_.empty()) {
+    if (extension_->is_app()) {
+      icon_ = *ResourceBundle::GetSharedInstance().GetBitmapNamed(
+          IDR_APP_DEFAULT_ICON);
+    } else {
+      icon_ = *ResourceBundle::GetSharedInstance().GetBitmapNamed(
+          IDR_EXTENSION_DEFAULT_ICON);
+    }
+  }
+}
+
+void ExtensionUninstallDialog::OnImageLoaded(SkBitmap* image,
+                                             const ExtensionResource& resource,
+                                             int index) {
+  SetIcon(image);
+
+  Show(profile_, delegate_, extension_, &icon_);
+}