src/content/shell/browser/shell_download_manager_delegate.cc

   1 // Copyright 2013 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 "content/shell/browser/shell_download_manager_delegate.h"
   6
   7 #if defined(OS_WIN)
   8 #include <windows.h>
   9 #include <commdlg.h>
  10 #endif
  11
  12 #include "base/bind.h"
  13 #include "base/command_line.h"
  14 #include "base/files/file_util.h"
  15 #include "base/logging.h"
  16 #include "base/strings/string_util.h"
  17 #include "base/strings/utf_string_conversions.h"
  18 #include "content/public/browser/browser_context.h"
  19 #include "content/public/browser/browser_thread.h"
  20 #include "content/public/browser/download_manager.h"
  21 #include "content/public/browser/web_contents.h"
  22 #include "content/shell/browser/webkit_test_controller.h"
  23 #include "content/shell/common/shell_switches.h"
  24 #include "net/base/filename_util.h"
  25
  26 #if defined(OS_WIN)
  27 #include "ui/aura/window.h"
  28 #include "ui/aura/window_tree_host.h"
  29 #endif
  30
  31 namespace content {
  32
  33 ShellDownloadManagerDelegate::ShellDownloadManagerDelegate()
  34     : download_manager_(NULL),
  35       suppress_prompting_(false),
  36       weak_ptr_factory_(this) {}
  37
  38 ShellDownloadManagerDelegate::~ShellDownloadManagerDelegate(){
  39   if (download_manager_) {
  40     DCHECK_EQ(static_cast<DownloadManagerDelegate*>(this),
  41               download_manager_->GetDelegate());
  42     download_manager_->SetDelegate(NULL);
  43     download_manager_ = NULL;
  44   }
  45 }
  46
  47
  48 void ShellDownloadManagerDelegate::SetDownloadManager(
  49     DownloadManager* download_manager) {
  50   download_manager_ = download_manager;
  51 }
  52
  53 void ShellDownloadManagerDelegate::Shutdown() {
  54   // Revoke any pending callbacks. download_manager_ et. al. are no longer safe
  55   // to access after this point.
  56   weak_ptr_factory_.InvalidateWeakPtrs();
  57   download_manager_ = NULL;
  58 }
  59
  60 bool ShellDownloadManagerDelegate::DetermineDownloadTarget(
  61     DownloadItem* download,
  62     const DownloadTargetCallback& callback) {
  63   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  64   // This assignment needs to be here because even at the call to
  65   // SetDownloadManager, the system is not fully initialized.
  66   if (default_download_path_.empty()) {
  67     default_download_path_ = download_manager_->GetBrowserContext()->GetPath().
  68         Append(FILE_PATH_LITERAL("Downloads"));
  69   }
  70
  71   if (!download->GetForcedFilePath().empty()) {
  72     callback.Run(download->GetForcedFilePath(),
  73                  DownloadItem::TARGET_DISPOSITION_OVERWRITE,
  74                  DOWNLOAD_DANGER_TYPE_NOT_DANGEROUS,
  75                  download->GetForcedFilePath());
  76     return true;
  77   }
  78
  79   FilenameDeterminedCallback filename_determined_callback =
  80       base::Bind(&ShellDownloadManagerDelegate::OnDownloadPathGenerated,
  81                  weak_ptr_factory_.GetWeakPtr(),
  82                  download->GetId(),
  83                  callback);
  84
  85   BrowserThread::PostTask(
  86       BrowserThread::FILE,
  87       FROM_HERE,
  88       base::Bind(&ShellDownloadManagerDelegate::GenerateFilename,
  89                  download->GetURL(),
  90                  download->GetContentDisposition(),
  91                  download->GetSuggestedFilename(),
  92                  download->GetMimeType(),
  93                  default_download_path_,
  94                  filename_determined_callback));
  95   return true;
  96 }
  97
  98 bool ShellDownloadManagerDelegate::ShouldOpenDownload(
  99       DownloadItem* item,
 100       const DownloadOpenDelayedCallback& callback) {
 101   if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kDumpRenderTree) &&
 102       WebKitTestController::Get()->IsMainWindow(item->GetWebContents()) &&
 103       item->GetMimeType() == "text/html") {
 104     WebKitTestController::Get()->OpenURL(
 105         net::FilePathToFileURL(item->GetFullPath()));
 106   }
 107   return true;
 108 }
 109
 110 void ShellDownloadManagerDelegate::GetNextId(
 111     const DownloadIdCallback& callback) {
 112   static uint32 next_id = DownloadItem::kInvalidId + 1;
 113   callback.Run(next_id++);
 114 }
 115
 116 // static
 117 void ShellDownloadManagerDelegate::GenerateFilename(
 118     const GURL& url,
 119     const std::string& content_disposition,
 120     const std::string& suggested_filename,
 121     const std::string& mime_type,
 122     const base::FilePath& suggested_directory,
 123     const FilenameDeterminedCallback& callback) {
 124   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
 125   base::FilePath generated_name = net::GenerateFileName(url,
 126                                                         content_disposition,
 127                                                         std::string(),
 128                                                         suggested_filename,
 129                                                         mime_type,
 130                                                         "download");
 131
 132   if (!base::PathExists(suggested_directory))
 133     base::CreateDirectory(suggested_directory);
 134
 135   base::FilePath suggested_path(suggested_directory.Append(generated_name));
 136   BrowserThread::PostTask(
 137       BrowserThread::UI, FROM_HERE, base::Bind(callback, suggested_path));
 138 }
 139
 140 void ShellDownloadManagerDelegate::OnDownloadPathGenerated(
 141     uint32 download_id,
 142     const DownloadTargetCallback& callback,
 143     const base::FilePath& suggested_path) {
 144   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 145   if (suppress_prompting_) {
 146     // Testing exit.
 147     callback.Run(suggested_path, DownloadItem::TARGET_DISPOSITION_OVERWRITE,
 148                  DOWNLOAD_DANGER_TYPE_NOT_DANGEROUS,
 149                  suggested_path.AddExtension(FILE_PATH_LITERAL(".crdownload")));
 150     return;
 151   }
 152
 153   ChooseDownloadPath(download_id, callback, suggested_path);
 154 }
 155
 156 void ShellDownloadManagerDelegate::ChooseDownloadPath(
 157     uint32 download_id,
 158     const DownloadTargetCallback& callback,
 159     const base::FilePath& suggested_path) {
 160   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 161   DownloadItem* item = download_manager_->GetDownload(download_id);
 162   if (!item || (item->GetState() != DownloadItem::IN_PROGRESS))
 163     return;
 164
 165   base::FilePath result;
 166 #if defined(OS_WIN)
 167   std::wstring file_part = base::FilePath(suggested_path).BaseName().value();
 168   wchar_t file_name[MAX_PATH];
 169   base::wcslcpy(file_name, file_part.c_str(), arraysize(file_name));
 170   OPENFILENAME save_as;
 171   ZeroMemory(&save_as, sizeof(save_as));
 172   save_as.lStructSize = sizeof(OPENFILENAME);
 173   save_as.hwndOwner = item->GetWebContents()->GetNativeView()->
 174       GetHost()->GetAcceleratedWidget();
 175   save_as.lpstrFile = file_name;
 176   save_as.nMaxFile = arraysize(file_name);
 177
 178   std::wstring directory;
 179   if (!suggested_path.empty())
 180     directory = suggested_path.DirName().value();
 181
 182   save_as.lpstrInitialDir = directory.c_str();
 183   save_as.Flags = OFN_OVERWRITEPROMPT | OFN_EXPLORER | OFN_ENABLESIZING |
 184                   OFN_NOCHANGEDIR | OFN_PATHMUSTEXIST;
 185
 186   if (GetSaveFileName(&save_as))
 187     result = base::FilePath(std::wstring(save_as.lpstrFile));
 188 #else
 189   NOTIMPLEMENTED();
 190 #endif
 191
 192   callback.Run(result, DownloadItem::TARGET_DISPOSITION_PROMPT,
 193                DOWNLOAD_DANGER_TYPE_NOT_DANGEROUS, result);
 194 }
 195
 196 void ShellDownloadManagerDelegate::SetDownloadBehaviorForTesting(
 197     const base::FilePath& default_download_path) {
 198   default_download_path_ = default_download_path;
 199   suppress_prompting_ = true;
 200 }
 201
 202 }  // namespace content