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// Copyright 2013 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/download/download_ui_controller.h"
#include "base/callback.h"
#include "base/stl_util.h"
#include "chrome/browser/download/download_item_model.h"
#include "chrome/browser/ui/browser_finder.h"
#include "chrome/browser/ui/browser_tabstrip.h"
#include "content/public/browser/download_item.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_contents_delegate.h"
#if defined(OS_ANDROID)
#include "content/public/browser/android/download_controller_android.h"
#else
#include "chrome/browser/profiles/profile.h"
#endif
namespace {
// DefaultUIControllerDelegate{Android,} is used when a DownloadUIController is
// constructed without specifying an explicit Delegate.
#if defined(OS_ANDROID)
class DefaultUIControllerDelegateAndroid
: public DownloadUIController::Delegate {
public:
DefaultUIControllerDelegateAndroid() {}
virtual ~DefaultUIControllerDelegateAndroid() {}
private:
// DownloadUIController::Delegate
virtual void OnNewDownloadReady(content::DownloadItem* item) OVERRIDE;
};
void DefaultUIControllerDelegateAndroid::OnNewDownloadReady(
content::DownloadItem* item) {
// The Android DownloadController is only interested in IN_PROGRESS downloads.
// Ones which are INTERRUPTED etc. can't be handed over to the Android
// DownloadManager.
if (item->GetState() != content::DownloadItem::IN_PROGRESS)
return;
// GET downloads without authentication are delegated to the Android
// DownloadManager. Chrome is responsible for the rest. See
// InterceptDownloadResourceThrottle::ProcessDownloadRequest().
content::DownloadControllerAndroid::Get()->OnDownloadStarted(item);
}
#else // OS_ANDROID
class DefaultUIControllerDelegate : public DownloadUIController::Delegate {
public:
// |profile| is required to outlive DefaultUIControllerDelegate.
explicit DefaultUIControllerDelegate(Profile* profile)
: profile_(profile) {}
virtual ~DefaultUIControllerDelegate() {}
private:
// DownloadUIController::Delegate
virtual void OnNewDownloadReady(content::DownloadItem* item) OVERRIDE;
Profile* profile_;
};
void DefaultUIControllerDelegate::OnNewDownloadReady(
content::DownloadItem* item) {
content::WebContents* web_contents = item->GetWebContents();
Browser* browser =
web_contents ? chrome::FindBrowserWithWebContents(web_contents) : NULL;
// As a last resort, use the last active browser for this profile. Not ideal,
// but better than not showing the download at all.
if (browser == NULL) {
browser = chrome::FindLastActiveWithProfile(profile_,
chrome::GetActiveDesktop());
}
if (browser)
browser->ShowDownload(item);
}
#endif // !OS_ANDROID
} // namespace
DownloadUIController::Delegate::~Delegate() {
}
DownloadUIController::DownloadUIController(content::DownloadManager* manager,
scoped_ptr<Delegate> delegate)
: download_notifier_(manager, this),
delegate_(delegate.Pass()) {
if (!delegate_) {
#if defined(OS_ANDROID)
delegate_.reset(new DefaultUIControllerDelegateAndroid());
#else
// The delegate should not be invoked after the profile has gone away. This
// should be the case since DownloadUIController is owned by
// DownloadService, which in turn is a profile keyed service.
delegate_.reset(new DefaultUIControllerDelegate(
Profile::FromBrowserContext(manager->GetBrowserContext())));
#endif
}
}
DownloadUIController::~DownloadUIController() {
}
void DownloadUIController::OnDownloadCreated(content::DownloadManager* manager,
content::DownloadItem* item) {
// SavePackage downloads are created in a state where they can be shown in the
// browser. Call OnDownloadUpdated() once to notify the UI immediately.
OnDownloadUpdated(manager, item);
}
void DownloadUIController::OnDownloadUpdated(content::DownloadManager* manager,
content::DownloadItem* item) {
DownloadItemModel item_model(item);
// Ignore if we've already notified the UI about |item| or if it isn't a new
// download.
if (item_model.WasUINotified() || !item_model.ShouldNotifyUI())
return;
// Wait until the target path is determined.
if (item->GetTargetFilePath().empty())
return;
DownloadItemModel(item).SetWasUINotified(true);
delegate_->OnNewDownloadReady(item);
}
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