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// 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.
#ifndef CHROME_BROWSER_UI_DOWNLOAD_DOWNLOAD_TAB_HELPER_H_
#define CHROME_BROWSER_UI_DOWNLOAD_DOWNLOAD_TAB_HELPER_H_
#pragma once
#include "base/basictypes.h"
#include "chrome/browser/download/save_package.h"
#include "content/browser/tab_contents/tab_contents_observer.h"
class DownloadItem;
class DownloadTabHelperDelegate;
class TabContentsWrapper;
// Per-tab download controller. Handles dealing with various per-tab download
// duties.
class DownloadTabHelper : public TabContentsObserver {
public:
explicit DownloadTabHelper(TabContentsWrapper* tab_contents);
virtual ~DownloadTabHelper();
DownloadTabHelperDelegate* delegate() const { return delegate_; }
void set_delegate(DownloadTabHelperDelegate* d) { delegate_ = d; }
// Prepare for saving the current web page to disk.
void OnSavePage();
// Prepare for saving the URL to disk.
// URL may refer to the iframe on the page.
void OnSaveURL(const GURL& url);
// Save page with the main HTML file path, the directory for saving resources,
// and the save type: HTML only or complete web page. Returns true if the
// saving process has been initiated successfully.
bool SavePage(const FilePath& main_file, const FilePath& dir_path,
SavePackage::SavePackageType save_type);
// Returns the SavePackage which manages the page saving job. May be NULL.
SavePackage* save_package() const { return save_package_.get(); }
// Notifies the delegate that a download is about to be started.
// This notification is fired before a local temporary file has been created.
bool CanDownload(int request_id);
// Notifies the delegate that a download started.
void OnStartDownload(DownloadItem* download);
private:
// TabContentsObserver overrides.
virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
virtual void DidGetUserGesture() OVERRIDE;
// SavePackage, lazily created.
scoped_refptr<SavePackage> save_package_;
// Owning TabContentsWrapper.
TabContentsWrapper* tab_contents_wrapper_;
// Delegate for notifying our owner (usually Browser) about stuff. Not owned
// by us.
DownloadTabHelperDelegate* delegate_;
DISALLOW_COPY_AND_ASSIGN(DownloadTabHelper);
};
#endif // CHROME_BROWSER_UI_DOWNLOAD_DOWNLOAD_TAB_HELPER_H_
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