From 5821806d5e7f356e8fa4b058a389a808ea183019 Mon Sep 17 00:00:00 2001
From: "Torne (Richard Coles)" <torne@google.com>
Date: Wed, 14 Nov 2012 11:43:16 +0000
Subject: Merge from Chromium at DEPS revision r167172

This commit was generated by merge_to_master.py.

Change-Id: Ib8d56fd5ae39a2d7e8c91dcd76cc6d13f25f2aab
---
 .../browser/download/mhtml_generation_manager.h    | 92 ++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 content/browser/download/mhtml_generation_manager.h

(limited to 'content/browser/download/mhtml_generation_manager.h')

diff --git a/content/browser/download/mhtml_generation_manager.h b/content/browser/download/mhtml_generation_manager.h
new file mode 100644
index 0000000000..54b8733dd3
--- /dev/null
+++ b/content/browser/download/mhtml_generation_manager.h
@@ -0,0 +1,92 @@
+// 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 CONTENT_BROWSER_DOWNLOAD_MHTML_GENERATION_MANAGER_H_
+#define CONTENT_BROWSER_DOWNLOAD_MHTML_GENERATION_MANAGER_H_
+
+#include <map>
+
+#include "base/memory/singleton.h"
+#include "base/platform_file.h"
+#include "base/process.h"
+#include "ipc/ipc_platform_file.h"
+
+class FilePath;
+
+namespace content {
+class WebContents;
+
+class MHTMLGenerationManager {
+ public:
+  static MHTMLGenerationManager* GetInstance();
+
+  typedef base::Callback<void(const FilePath& /* path to the MHTML file */,
+      int64 /* size of the file */)> GenerateMHTMLCallback;
+
+  // Instructs the render view to generate a MHTML representation of the current
+  // page for |web_contents|.
+  void GenerateMHTML(WebContents* web_contents,
+                     const FilePath& file,
+                     const GenerateMHTMLCallback& callback);
+
+  // Notification from the renderer that the MHTML generation finished.
+  // |mhtml_data_size| contains the size in bytes of the generated MHTML data,
+  // or -1 in case of failure.
+  void MHTMLGenerated(int job_id, int64 mhtml_data_size);
+
+ private:
+  friend struct DefaultSingletonTraits<MHTMLGenerationManager>;
+
+  struct Job{
+    Job();
+    ~Job();
+
+    FilePath file_path;
+
+    // The handles to file the MHTML is saved to, for the browser and renderer
+    // processes.
+    base::PlatformFile browser_file;
+    IPC::PlatformFileForTransit renderer_file;
+
+    // The IDs mapping to a specific contents.
+    int process_id;
+    int routing_id;
+
+    // The callback to call once generation is complete.
+    GenerateMHTMLCallback callback;
+  };
+
+  MHTMLGenerationManager();
+  ~MHTMLGenerationManager();
+
+  // Called on the file thread to create |file|.
+  void CreateFile(int job_id,
+                  const FilePath& file,
+                  base::ProcessHandle renderer_process);
+
+  // Called on the UI thread when the file that should hold the MHTML data has
+  // been created.  This returns a handle to that file for the browser process
+  // and one for the renderer process. These handles are
+  // kInvalidPlatformFileValue if the file could not be opened.
+  void FileCreated(int job_id,
+                   base::PlatformFile browser_file,
+                   IPC::PlatformFileForTransit renderer_file);
+
+  // Called on the file thread to close the file the MHTML was saved to.
+  void CloseFile(base::PlatformFile file);
+
+  // Called on the UI thread when a job has been processed (successfully or
+  // not).  Closes the file and removes the job from the job map.
+  // |mhtml_data_size| is -1 if the MHTML generation failed.
+  void JobFinished(int job_id, int64 mhtml_data_size);
+
+  typedef std::map<int, Job> IDToJobMap;
+  IDToJobMap id_to_job_;
+
+  DISALLOW_COPY_AND_ASSIGN(MHTMLGenerationManager);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_DOWNLOAD_MHTML_GENERATION_MANAGER_H_
-- 
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