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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/bind.h"
#include "base/logging.h"
#include "base/message_loop/message_loop.h"
#include "chrome/browser/chrome_notification_types.h"
#include "chrome/browser/extensions/image_loader.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/browser.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/manifest_handlers/icons_handler.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/notification_source.h"
#include "extensions/common/extension_resource.h"
#include "grit/generated_resources.h"
#include "grit/theme_resources.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/gfx/image/image.h"
#include "ui/gfx/image/image_skia.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) {
float max_scale_factor_scale = gfx::ImageSkia::GetMaxSupportedScale();
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) {
const gfx::ImageSkia& image = is_app ?
extensions::IconsInfo::GetDefaultAppIcon() :
extensions::IconsInfo::GetDefaultExtensionIcon();
return image.GetRepresentation(
gfx::ImageSkia::GetMaxSupportedScale()).sk_bitmap();
}
} // namespace
// Size of extension icon in top left of dialog.
static const int kIconSize = 69;
ExtensionUninstallDialog::ExtensionUninstallDialog(
Profile* profile,
Browser* browser,
ExtensionUninstallDialog::Delegate* delegate)
: profile_(profile),
browser_(browser),
delegate_(delegate),
extension_(NULL),
state_(kImageIsLoading),
ui_loop_(base::MessageLoop::current()) {
if (browser) {
registrar_.Add(this,
chrome::NOTIFICATION_BROWSER_CLOSED,
content::Source<Browser>(browser));
}
}
ExtensionUninstallDialog::~ExtensionUninstallDialog() {
}
void ExtensionUninstallDialog::ConfirmUninstall(
const extensions::Extension* extension) {
DCHECK(ui_loop_ == base::MessageLoop::current());
extension_ = extension;
extensions::ExtensionResource image = extensions::IconsInfo::GetIconResource(
extension_,
extension_misc::EXTENSION_ICON_LARGE,
ExtensionIconSet::MATCH_BIGGER);
// 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);
// Load the image asynchronously. The response will be sent to OnImageLoaded.
state_ = kImageIsLoading;
extensions::ImageLoader* loader =
extensions::ImageLoader::Get(profile_);
loader->LoadImageAsync(extension_, image,
gfx::Size(pixel_size, pixel_size),
base::Bind(&ExtensionUninstallDialog::OnImageLoaded,
AsWeakPtr()));
}
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::CreateFrom1xBitmap(
GetDefaultIconBitmapForMaxScaleFactor(extension_->is_app()));
} else {
icon_ = *image.ToImageSkia();
}
}
void ExtensionUninstallDialog::OnImageLoaded(const gfx::Image& image) {
SetIcon(image);
// Show the dialog unless the browser has been closed while we were waiting
// for the image.
DCHECK(state_ == kImageIsLoading || state_ == kBrowserIsClosing);
if (state_ == kImageIsLoading) {
state_ = kDialogIsShowing;
Show();
}
}
void ExtensionUninstallDialog::Observe(
int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
DCHECK(type == chrome::NOTIFICATION_BROWSER_CLOSED);
browser_ = NULL;
// If the browser is closed while waiting for the image, we need to send a
// "cancel" event here, because there will not be another opportunity to
// notify the delegate of the cancellation as we won't open the dialog.
if (state_ == kImageIsLoading) {
state_ = kBrowserIsClosing;
delegate_->ExtensionUninstallCanceled();
}
}
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