cef/libcef/browser/printing/print_view_manager.h

103 lines
3.7 KiB
C++

// 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 CEF_LIBCEF_BROWSER_PRINTING_PRINT_VIEW_MANAGER_H_
#define CEF_LIBCEF_BROWSER_PRINTING_PRINT_VIEW_MANAGER_H_
#include "include/internal/cef_types_wrappers.h"
#include "base/macros.h"
#include "content/public/browser/web_contents_observer.h"
#include "content/public/browser/web_contents_user_data.h"
namespace content {
class RenderFrameHost;
class RenderProcessHost;
class WebContentsObserver;
} // namespace content
class CefBrowserInfo;
struct PrintHostMsg_DidPreviewDocument_Params;
struct PrintHostMsg_PreviewIds;
struct PrintHostMsg_RequestPrintPreview_Params;
namespace printing {
// Manages the print commands for a WebContents.
class CefPrintViewManager
: public content::WebContentsObserver,
public content::WebContentsUserData<CefPrintViewManager> {
public:
~CefPrintViewManager() override;
// Callback executed on PDF printing completion.
typedef base::Callback<void(bool /*ok*/)> PdfPrintCallback;
// Print the current document to a PDF file. Execute |callback| on completion.
bool PrintToPDF(content::RenderFrameHost* rfh,
const base::FilePath& path,
const CefPdfPrintSettings& settings,
const PdfPrintCallback& callback);
// Call to Chrome's PrintViewManager.
bool PrintPreviewNow(content::RenderFrameHost* rfh, bool has_selection);
// content::WebContentsObserver implementation.
void RenderFrameDeleted(content::RenderFrameHost* render_frame_host) override;
void NavigationStopped() override;
void RenderProcessGone(base::TerminationStatus status) override;
bool OnMessageReceived(const IPC::Message& message,
content::RenderFrameHost* render_frame_host) override;
// Used to track the lifespan of the print preview WebContents.
class PrintPreviewHelper
: public content::WebContentsObserver,
public content::WebContentsUserData<PrintPreviewHelper> {
public:
void Initialize(int parent_frame_tree_node_id);
void WebContentsDestroyed() override;
private:
friend class content::WebContentsUserData<PrintPreviewHelper>;
explicit PrintPreviewHelper(content::WebContents* contents);
int parent_frame_tree_node_id_ = -1;
WEB_CONTENTS_USER_DATA_KEY_DECL();
DISALLOW_COPY_AND_ASSIGN(PrintPreviewHelper);
};
private:
explicit CefPrintViewManager(content::WebContents* web_contents);
friend class content::WebContentsUserData<CefPrintViewManager>;
// IPC Message handlers.
void OnRequestPrintPreview(content::RenderFrameHost* rfh,
const PrintHostMsg_RequestPrintPreview_Params&);
void OnShowScriptedPrintPreview(content::RenderFrameHost* rfh,
bool source_is_modifiable);
void OnRequestPrintPreview_PrintToPdf(
content::RenderFrameHost* rfh,
const PrintHostMsg_RequestPrintPreview_Params&);
void OnDidShowPrintDialog_PrintToPdf(content::RenderFrameHost* rfh);
void OnMetafileReadyForPrinting_PrintToPdf(
content::RenderFrameHost* rfh,
const PrintHostMsg_DidPreviewDocument_Params& params,
const PrintHostMsg_PreviewIds& ids);
void InitializePrintPreview(int frame_tree_node_id);
void TerminatePdfPrintJob();
// Used for printing to PDF. Only accessed on the browser process UI thread.
int next_pdf_request_id_ = content::RenderFrameHost::kNoFrameTreeNodeId;
struct PdfPrintState;
std::unique_ptr<PdfPrintState> pdf_print_state_;
WEB_CONTENTS_USER_DATA_KEY_DECL();
DISALLOW_COPY_AND_ASSIGN(CefPrintViewManager);
};
} // namespace printing
#endif // CEF_LIBCEF_BROWSER_PRINTING_PRINT_VIEW_MANAGER_H_