| // 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_UI_WEBUI_PRINT_PREVIEW_PRINT_PREVIEW_HANDLER_H_ |
| #define CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_PRINT_PREVIEW_HANDLER_H_ |
| |
| #include <string> |
| |
| #include "base/files/file_path.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "base/memory/weak_ptr.h" |
| #include "chrome/browser/printing/print_view_manager_observer.h" |
| #include "content/public/browser/web_ui_message_handler.h" |
| #include "ui/shell_dialogs/select_file_dialog.h" |
| |
| class PrintSystemTaskProxy; |
| |
| namespace base { |
| class DictionaryValue; |
| class RefCountedBytes; |
| } |
| |
| namespace content { |
| class WebContents; |
| } |
| |
| namespace printing { |
| struct PageSizeMargins; |
| class PrintBackend; |
| } |
| |
| // The handler for Javascript messages related to the print preview dialog. |
| class PrintPreviewHandler : public content::WebUIMessageHandler, |
| public ui::SelectFileDialog::Listener, |
| public printing::PrintViewManagerObserver { |
| public: |
| PrintPreviewHandler(); |
| virtual ~PrintPreviewHandler(); |
| |
| // WebUIMessageHandler implementation. |
| virtual void RegisterMessages() OVERRIDE; |
| |
| // SelectFileDialog::Listener implementation. |
| virtual void FileSelected(const base::FilePath& path, |
| int index, |
| void* params) OVERRIDE; |
| virtual void FileSelectionCanceled(void* params) OVERRIDE; |
| |
| // PrintViewManagerObserver implementation. |
| virtual void OnPrintDialogShown() OVERRIDE; |
| |
| // Displays a modal dialog, prompting the user to select a file. |
| void SelectFile(const base::FilePath& default_path); |
| |
| // Called when the print preview dialog is destroyed. This is the last time |
| // this object has access to the PrintViewManager in order to disconnect the |
| // observer. |
| void OnPrintPreviewDialogDestroyed(); |
| |
| // Called when print preview failed. |
| void OnPrintPreviewFailed(); |
| |
| // Called when the user press ctrl+shift+p to display the native system |
| // dialog. |
| void ShowSystemDialog(); |
| |
| private: |
| class AccessTokenService; |
| struct CUPSPrinterColorModels; |
| |
| content::WebContents* preview_web_contents() const; |
| |
| // Gets the list of printers. |args| is unused. |
| void HandleGetPrinters(const base::ListValue* args); |
| |
| // Asks the initiator renderer to generate a preview. First element of |args| |
| // is a job settings JSON string. |
| void HandleGetPreview(const base::ListValue* args); |
| |
| // Gets the job settings from Web UI and initiate printing. First element of |
| // |args| is a job settings JSON string. |
| void HandlePrint(const base::ListValue* args); |
| |
| // Handles the request to hide the preview dialog for printing. |
| // |args| is unused. |
| void HandleHidePreview(const base::ListValue* args); |
| |
| // Handles the request to cancel the pending print request. |args| is unused. |
| void HandleCancelPendingPrintRequest(const base::ListValue* args); |
| |
| // Handles a request to store data that the web ui wishes to persist. |
| // First element of |args| is the data to persist. |
| void HandleSaveAppState(const base::ListValue* args); |
| |
| // Gets the printer capabilities. First element of |args| is the printer name. |
| void HandleGetPrinterCapabilities(const base::ListValue* args); |
| |
| // Asks the initiator renderer to show the native print system dialog. |args| |
| // is unused. |
| void HandleShowSystemDialog(const base::ListValue* args); |
| |
| // Callback for the signin dialog to call once signin is complete. |
| void OnSigninComplete(); |
| |
| // Brings up a dialog to allow the user to sign into cloud print. |
| // |args| is unused. |
| void HandleSignin(const base::ListValue* args); |
| |
| // Generates new token and sends back to UI. |
| void HandleGetAccessToken(const base::ListValue* args); |
| |
| // Brings up a web page to allow the user to configure cloud print. |
| // |args| is unused. |
| void HandleManageCloudPrint(const base::ListValue* args); |
| |
| // Gathers UMA stats when the print preview dialog is about to close. |
| // |args| is unused. |
| void HandleClosePreviewDialog(const base::ListValue* args); |
| |
| // Asks the browser to show the native printer management dialog. |
| // |args| is unused. |
| void HandleManagePrinters(const base::ListValue* args); |
| |
| // Asks the browser to show the cloud print dialog. |args| is signle int with |
| // page count. |
| void HandlePrintWithCloudPrintDialog(const base::ListValue* args); |
| |
| // Asks the browser for several settings that are needed before the first |
| // preview is displayed. |
| void HandleGetInitialSettings(const base::ListValue* args); |
| |
| // Reports histogram data for a print preview UI action. |args| should consist |
| // of two elements: the bucket name, and the bucket event. |
| void HandleReportUiEvent(const base::ListValue* args); |
| |
| // Forces the opening of a new tab. |args| should consist of one element: the |
| // URL to set the new tab to. |
| // |
| // NOTE: This is needed to open FedEx confirmation window as a new tab. |
| // Javascript's "window.open" opens a new window popup (since initiated from |
| // async HTTP request) and worse yet, on Windows and Chrome OS, the opened |
| // window opens behind the initiator window. |
| void HandleForceOpenNewTab(const base::ListValue* args); |
| |
| void SendInitialSettings(const std::string& default_printer); |
| |
| // Send OAuth2 access token. |
| void SendAccessToken(const std::string& type, |
| const std::string& access_token); |
| |
| // Sends the printer capabilities to the Web UI. |settings_info| contains |
| // printer capabilities information. |
| void SendPrinterCapabilities(const base::DictionaryValue* settings_info); |
| |
| // Sends error notification to the Web UI when unable to return the printer |
| // capabilities. |
| void SendFailedToGetPrinterCapabilities(const std::string& printer_name); |
| |
| // Send the list of printers to the Web UI. |
| void SetupPrinterList(const base::ListValue* printers); |
| |
| // Send whether cloud print integration should be enabled. |
| void SendCloudPrintEnabled(); |
| |
| // Send the PDF data to the cloud to print. |
| void SendCloudPrintJob(const base::RefCountedBytes* data); |
| |
| // Handles printing to PDF. |
| void PrintToPdf(); |
| |
| // Asks the browser to show the cloud print dialog. |
| void PrintWithCloudPrintDialog(); |
| |
| // Gets the initiator for the print preview dialog. |
| content::WebContents* GetInitiator() const; |
| |
| // Closes the preview dialog. |
| void ClosePreviewDialog(); |
| |
| // Adds all the recorded stats taken so far to histogram counts. |
| void ReportStats(); |
| |
| // Clears initiator details for the print preview dialog. |
| void ClearInitiatorDetails(); |
| |
| // Posts a task to save |data| to pdf at |print_to_pdf_path_|. |
| void PostPrintToPdfTask(); |
| |
| // Populates |settings| according to the current locale. |
| void GetNumberFormatAndMeasurementSystem(base::DictionaryValue* settings); |
| |
| bool GetPreviewDataAndTitle(scoped_refptr<base::RefCountedBytes>* data, |
| string16* title) const; |
| |
| #if defined(USE_CUPS) |
| void SaveCUPSColorSetting(const base::DictionaryValue* settings); |
| |
| void ConvertColorSettingToCUPSColorModel( |
| base::DictionaryValue* settings) const; |
| #endif |
| |
| // Pointer to current print system. |
| scoped_refptr<printing::PrintBackend> print_backend_; |
| |
| // The underlying dialog object. |
| scoped_refptr<ui::SelectFileDialog> select_file_dialog_; |
| |
| // A count of how many requests received to regenerate preview data. |
| // Initialized to 0 then incremented and emitted to a histogram. |
| int regenerate_preview_request_count_; |
| |
| // A count of how many requests received to show manage printers dialog. |
| int manage_printers_dialog_request_count_; |
| int manage_cloud_printers_dialog_request_count_; |
| |
| // Whether we have already logged a failed print preview. |
| bool reported_failed_preview_; |
| |
| // Whether we have already logged the number of printers this session. |
| bool has_logged_printers_count_; |
| |
| // Holds the path to the print to pdf request. It is empty if no such request |
| // exists. |
| base::FilePath print_to_pdf_path_; |
| |
| // Holds token service to get OAuth2 access tokens. |
| scoped_ptr<AccessTokenService> token_service_; |
| |
| #if defined(USE_CUPS) |
| // The color capabilities from the last printer queried. |
| scoped_ptr<CUPSPrinterColorModels> cups_printer_color_models_; |
| #endif |
| |
| base::WeakPtrFactory<PrintPreviewHandler> weak_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(PrintPreviewHandler); |
| }; |
| |
| #endif // CHROME_BROWSER_UI_WEBUI_PRINT_PREVIEW_PRINT_PREVIEW_HANDLER_H_ |