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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.
#ifndef CHROME_BROWSER_PRINTING_PRINT_DIALOG_CLOUD_INTERNAL_H_
#define CHROME_BROWSER_PRINTING_PRINT_DIALOG_CLOUD_INTERNAL_H_
#include <string>
#include <vector>
#include "base/callback.h"
#include "base/files/file_path.h"
#include "base/memory/scoped_ptr.h"
#include "base/synchronization/lock.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
#include "content/public/browser/web_ui_message_handler.h"
#include "ui/web_dialogs/web_dialog_delegate.h"
#include "ui/web_dialogs/web_dialog_ui.h"
class CloudPrintWebDialogDelegateTest;
class GURL;
namespace base {
class ListValue;
class Value;
}
namespace internal_cloud_print_helpers {
// Small class to virtualize a few functions to aid with unit testing.
class CloudPrintDataSenderHelper {
public:
explicit CloudPrintDataSenderHelper(content::WebUI* web_ui)
: web_ui_(web_ui) {}
virtual ~CloudPrintDataSenderHelper() {}
// Virtualize the overrides of this function from WebUI to facilitate unit
// testing.
virtual void CallJavascriptFunction(const std::string& function_name,
const base::Value& arg1,
const base::Value& arg2);
private:
content::WebUI* web_ui_;
DISALLOW_COPY_AND_ASSIGN(CloudPrintDataSenderHelper);
};
// Small helper class to get the print data loaded in from the PDF
// file (on the FILE thread) and send it to the print dialog contents
// (on the IO thread), allowing for cancellation.
class CloudPrintDataSender
: public base::RefCountedThreadSafe<CloudPrintDataSender> {
public:
// The owner of this object is also expected to own and control the
// lifetime of the helper.
CloudPrintDataSender(CloudPrintDataSenderHelper* helper,
const base::string16& print_job_title,
const base::string16& print_ticket,
const std::string& file_type,
const base::RefCountedMemory* data);
// Send print data (on the IO thread). We know that the WebUI pointer
// lifetime will outlast us, so we should be good.
void SendPrintData();
// Cancels any ramining part of the task by clearing out the WebUI
// helper_ ptr.
void CancelPrintDataFile();
private:
friend class base::RefCountedThreadSafe<CloudPrintDataSender>;
virtual ~CloudPrintDataSender();
base::Lock lock_;
CloudPrintDataSenderHelper* volatile helper_;
base::string16 print_job_title_;
base::string16 print_ticket_;
std::string file_type_;
scoped_refptr<const base::RefCountedMemory> data_;
DISALLOW_COPY_AND_ASSIGN(CloudPrintDataSender);
};
class CloudPrintWebDialogDelegate;
// The CloudPrintFlowHandler connects the state machine (the UI delegate)
// to the dialog backing HTML and JS by providing WebUIMessageHandler
// functions for the JS to use. This include refreshing the page
// setup parameters (which will cause a re-generation of the PDF in
// the renderer process - do we want a progress throbber shown?
// Probably..), and packing up the PDF and job parameters and sending
// them to the cloud.
class CloudPrintFlowHandler : public content::WebUIMessageHandler,
public content::NotificationObserver {
public:
CloudPrintFlowHandler(const base::RefCountedMemory* data,
const base::string16& print_job_title,
const base::string16& print_ticket,
const std::string& file_type);
virtual ~CloudPrintFlowHandler();
// WebUIMessageHandler implementation.
virtual void RegisterMessages() OVERRIDE;
// content::NotificationObserver implementation.
virtual void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) OVERRIDE;
// Callbacks from the page.
void HandleShowDebugger(const base::ListValue* args);
void HandleSendPrintData(const base::ListValue* args);
void HandleSetPageParameters(const base::ListValue* args);
virtual void SetDialogDelegate(CloudPrintWebDialogDelegate *delegate);
void StoreDialogClientSize() const;
private:
virtual scoped_refptr<CloudPrintDataSender> CreateCloudPrintDataSender();
// Call to get the debugger loaded on our hosted dialog page
// specifically. Since we're not in an official browser tab, only
// way to get the debugger going.
void ShowDebugger();
void CancelAnyRunningTask();
bool IsCloudPrintDialogUrl(const GURL& url);
CloudPrintWebDialogDelegate* dialog_delegate_;
content::NotificationRegistrar registrar_;
scoped_refptr<const base::RefCountedMemory> data_;
base::string16 print_job_title_;
base::string16 print_ticket_;
std::string file_type_;
scoped_refptr<CloudPrintDataSender> print_data_sender_;
scoped_ptr<CloudPrintDataSenderHelper> print_data_helper_;
DISALLOW_COPY_AND_ASSIGN(CloudPrintFlowHandler);
};
// State machine used to run the printing dialog. This class is used
// to open and run the web dialog and deletes itself when the dialog
// is closed.
class CloudPrintWebDialogDelegate : public ui::WebDialogDelegate {
public:
CloudPrintWebDialogDelegate(content::BrowserContext* browser_context,
gfx::NativeWindow modal_parent,
const base::RefCountedMemory* data,
const std::string& json_arguments,
const base::string16& print_job_title,
const base::string16& print_ticket,
const std::string& file_type);
virtual ~CloudPrintWebDialogDelegate();
// ui::WebDialogDelegate implementation:
virtual ui::ModalType GetDialogModalType() const OVERRIDE;
virtual base::string16 GetDialogTitle() const OVERRIDE;
virtual GURL GetDialogContentURL() const OVERRIDE;
virtual void GetWebUIMessageHandlers(
std::vector<content::WebUIMessageHandler*>* handlers) const OVERRIDE;
virtual void GetDialogSize(gfx::Size* size) const OVERRIDE;
virtual std::string GetDialogArgs() const OVERRIDE;
virtual void OnDialogClosed(const std::string& json_retval) OVERRIDE;
virtual void OnCloseContents(content::WebContents* source,
bool* out_close_dialog) OVERRIDE;
virtual bool ShouldShowDialogTitle() const OVERRIDE;
virtual bool HandleContextMenu(
const content::ContextMenuParams& params) OVERRIDE;
private:
friend class ::CloudPrintWebDialogDelegateTest;
// For unit testing.
CloudPrintWebDialogDelegate(CloudPrintFlowHandler* flow_handler,
const std::string& json_arguments);
void Init(content::BrowserContext* browser_context,
const std::string& json_arguments);
CloudPrintFlowHandler* flow_handler_;
gfx::NativeWindow modal_parent_;
mutable bool owns_flow_handler_;
bool keep_alive_when_non_modal_;
// The parameters needed to display a modal web dialog.
ui::WebDialogUI::WebDialogParams params_;
DISALLOW_COPY_AND_ASSIGN(CloudPrintWebDialogDelegate);
};
void CreateDialogForFileImpl(content::BrowserContext* browser_context,
gfx::NativeWindow modal_parent,
const base::FilePath& path_to_file,
const base::string16& print_job_title,
const base::string16& print_ticket,
const std::string& file_type);
} // namespace internal_cloud_print_helpers
#endif // CHROME_BROWSER_PRINTING_PRINT_DIALOG_CLOUD_INTERNAL_H_
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