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// Copyright (c) 2012 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/common/chrome_notification_types.h"
#include "chrome/common/extensions/extension.h"
#include "chrome/common/extensions/extension_constants.h"
#include "chrome/common/extensions/extension_icon_set.h"
#include "chrome/common/extensions/extension_resource.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/notification_source.h"
#include "grit/generated_resources.h"
#include "grit/theme_resources.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/gfx/image/image.h"
namespace {
// Returns pixel size under maximal scale factor for the icon whose device
// independent size is |size_in_dip|
int GetSizeForMaxScaleFactor(int size_in_dip) {
ui::ScaleFactor max_scale_factor = ui::GetMaxScaleFactor();
float max_scale_factor_scale = ui::GetScaleFactorScale(max_scale_factor);
return static_cast<int>(size_in_dip * max_scale_factor_scale);
}
// Returns bitmap for the default icon with size equal to the default icon's
// pixel size under maximal supported scale factor.
SkBitmap GetDefaultIconBitmapForMaxScaleFactor(bool is_app) {
return extensions::Extension::GetDefaultIcon(is_app).
GetRepresentation(ui::GetMaxScaleFactor()).sk_bitmap();
}
} // namespace
// Size of extension icon in top left of dialog.
static const int kIconSize = 69;
ExtensionUninstallDialog::ExtensionUninstallDialog(
Browser* browser,
ExtensionUninstallDialog::Delegate* delegate)
: browser_(browser),
delegate_(delegate),
extension_(NULL),
ui_loop_(MessageLoop::current()) {
if (browser) {
registrar_.Add(this,
chrome::NOTIFICATION_BROWSER_CLOSING,
content::Source<Browser>(browser));
}
}
ExtensionUninstallDialog::~ExtensionUninstallDialog() {
}
void ExtensionUninstallDialog::ConfirmUninstall(
const extensions::Extension* extension) {
DCHECK(ui_loop_ == MessageLoop::current());
extension_ = extension;
ExtensionResource image =
extension_->GetIconResource(extension_misc::EXTENSION_ICON_LARGE,
ExtensionIconSet::MATCH_BIGGER);
// Load the image asynchronously. The response will be sent to OnImageLoaded.
tracker_.reset(new ImageLoadingTracker(this));
// Load the icon whose pixel size is large enough to be displayed under
// maximal supported scale factor. UI code will scale the icon down if needed.
int pixel_size = GetSizeForMaxScaleFactor(kIconSize);
tracker_->LoadImage(extension_, image,
gfx::Size(pixel_size, pixel_size),
ImageLoadingTracker::DONT_CACHE);
}
void ExtensionUninstallDialog::SetIcon(const gfx::Image& image) {
if (image.IsEmpty()) {
// Let's set default icon bitmap whose size is equal to the default icon's
// pixel size under maximal supported scale factor. If the bitmap is larger
// than the one we need, it will be scaled down by the ui code.
// TODO(tbarzic): We should use IconImage here and load the required bitmap
// lazily.
icon_ = gfx::ImageSkia(
GetDefaultIconBitmapForMaxScaleFactor(extension_->is_app()));
} else {
icon_ = *image.ToImageSkia();
}
}
void ExtensionUninstallDialog::OnImageLoaded(const gfx::Image& image,
const std::string& extension_id,
int index) {
SetIcon(image);
// Reset the tracker so that we can use its presence as a signal that we're
// still waiting for the icon to load.
tracker_.reset();
Show();
}
void ExtensionUninstallDialog::Observe(
int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
DCHECK(type == chrome::NOTIFICATION_BROWSER_CLOSING);
browser_ = NULL;
if (tracker_.get()) {
// If we're waiting for the icon, stop doing so because we're not going to
// show the dialog.
tracker_.reset();
delegate_->ExtensionUninstallCanceled();
}
}
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