src/chrome/browser/download/download_file_picker.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/download/download_file_picker.h"
   6
   7 #include "base/metrics/histogram.h"
   8 #include "chrome/browser/download/download_prefs.h"
   9 #include "chrome/browser/platform_util.h"
  10 #include "chrome/browser/ui/chrome_select_file_policy.h"
  11 #include "content/public/browser/browser_context.h"
  12 #include "content/public/browser/download_item.h"
  13 #include "content/public/browser/download_manager.h"
  14 #include "content/public/browser/web_contents.h"
  15
  16 using content::DownloadItem;
  17 using content::DownloadManager;
  18 using content::WebContents;
  19
  20 namespace {
  21
  22 enum FilePickerResult {
  23   FILE_PICKER_SAME,
  24   FILE_PICKER_DIFFERENT_DIR,
  25   FILE_PICKER_DIFFERENT_NAME,
  26   FILE_PICKER_CANCEL,
  27   FILE_PICKER_MAX,
  28 };
  29
  30 // Record how the File Picker was used during a download. This UMA is only
  31 // recorded for profiles that do not always prompt for save locations on
  32 // downloads.
  33 void RecordFilePickerResult(const base::FilePath& suggested_path,
  34                             const base::FilePath& actual_path) {
  35   FilePickerResult result;
  36   if (suggested_path == actual_path)
  37     result = FILE_PICKER_SAME;
  38   else if (actual_path.empty())
  39     result = FILE_PICKER_CANCEL;
  40   else if (suggested_path.DirName() != actual_path.DirName())
  41     result = FILE_PICKER_DIFFERENT_DIR;
  42   else
  43     result = FILE_PICKER_DIFFERENT_NAME;
  44
  45   UMA_HISTOGRAM_ENUMERATION("Download.FilePickerResult",
  46                             result,
  47                             FILE_PICKER_MAX);
  48 }
  49
  50 }  // namespace
  51
  52 DownloadFilePicker::DownloadFilePicker(
  53     DownloadItem* item,
  54     const base::FilePath& suggested_path,
  55     const FileSelectedCallback& callback)
  56     : suggested_path_(suggested_path),
  57       file_selected_callback_(callback),
  58       should_record_file_picker_result_(false) {
  59   const DownloadPrefs* prefs =
  60       DownloadPrefs::FromBrowserContext(item->GetBrowserContext());
  61   DCHECK(prefs);
  62   // Only record UMA if we aren't prompting the user for all downloads.
  63   should_record_file_picker_result_ = !prefs->PromptForDownload();
  64
  65   WebContents* web_contents = item->GetWebContents();
  66   select_file_dialog_ = ui::SelectFileDialog::Create(
  67       this, new ChromeSelectFilePolicy(web_contents));
  68   ui::SelectFileDialog::FileTypeInfo file_type_info;
  69   // Platform file pickers, notably on Mac and Windows, tend to break
  70   // with double extensions like .tar.gz, so only pass in normal ones.
  71   base::FilePath::StringType extension = suggested_path_.FinalExtension();
  72   if (!extension.empty()) {
  73     extension.erase(extension.begin());  // drop the .
  74     file_type_info.extensions.resize(1);
  75     file_type_info.extensions[0].push_back(extension);
  76   }
  77   file_type_info.include_all_files = true;
  78   file_type_info.support_drive = true;
  79   gfx::NativeWindow owning_window = web_contents ?
  80       platform_util::GetTopLevel(web_contents->GetNativeView()) : NULL;
  81
  82   select_file_dialog_->SelectFile(ui::SelectFileDialog::SELECT_SAVEAS_FILE,
  83                                   base::string16(),
  84                                   suggested_path_,
  85                                   &file_type_info,
  86                                   0,
  87                                   base::FilePath::StringType(),
  88                                   owning_window,
  89                                   NULL);
  90 }
  91
  92 DownloadFilePicker::~DownloadFilePicker() {
  93 }
  94
  95 void DownloadFilePicker::OnFileSelected(const base::FilePath& path) {
  96   if (should_record_file_picker_result_)
  97     RecordFilePickerResult(suggested_path_, path);
  98   file_selected_callback_.Run(path);
  99   delete this;
 100 }
 101
 102 void DownloadFilePicker::FileSelected(const base::FilePath& path,
 103                                       int index,
 104                                       void* params) {
 105   OnFileSelected(path);
 106   // Deletes |this|
 107 }
 108
 109 void DownloadFilePicker::FileSelectionCanceled(void* params) {
 110   OnFileSelected(base::FilePath());
 111   // Deletes |this|
 112 }
 113
 114 // static
 115 void DownloadFilePicker::ShowFilePicker(DownloadItem* item,
 116                                         const base::FilePath& suggested_path,
 117                                         const FileSelectedCallback& callback) {
 118   new DownloadFilePicker(item, suggested_path, callback);
 119   // DownloadFilePicker deletes itself.
 120 }