TabContents -> WebContentsImpl, part 4.

content/browser/tab_contents/web_contents_drag_win.cc

Index: content/browser/tab_contents/web_contents_drag_win.cc
diff --git a/content/browser/tab_contents/web_contents_drag_win.cc b/content/browser/tab_contents/web_contents_drag_win.cc
deleted file mode 100644
index cbf0178717f5cd191fd37a0250be1070746799be..0000000000000000000000000000000000000000
--- a/content/browser/tab_contents/web_contents_drag_win.cc
+++ /dev/null
@@ -1,371 +0,0 @@
-// 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.
-
-#include "content/browser/tab_contents/web_contents_drag_win.h"
-
-#include <windows.h>
-
-#include <string>
-
-#include "base/bind.h"
-#include "base/file_path.h"
-#include "base/message_loop.h"
-#include "base/pickle.h"
-#include "base/threading/platform_thread.h"
-#include "base/threading/thread.h"
-#include "base/utf_string_conversions.h"
-#include "content/browser/download/drag_download_file.h"
-#include "content/browser/download/drag_download_util.h"
-#include "content/browser/web_contents/web_drag_dest_win.h"
-#include "content/browser/web_contents/web_drag_source_win.h"
-#include "content/browser/web_contents/web_drag_utils_win.h"
-#include "content/public/browser/browser_thread.h"
-#include "content/public/browser/content_browser_client.h"
-#include "content/public/browser/web_contents.h"
-#include "content/public/browser/web_drag_dest_delegate.h"
-#include "net/base/net_util.h"
-#include "ui/base/clipboard/clipboard_util_win.h"
-#include "ui/base/clipboard/custom_data_helper.h"
-#include "ui/base/dragdrop/drag_utils.h"
-#include "ui/gfx/size.h"
-#include "webkit/glue/webdropdata.h"
-
-using content::BrowserThread;
-using WebKit::WebDragOperationsMask;
-using WebKit::WebDragOperationCopy;
-using WebKit::WebDragOperationLink;
-using WebKit::WebDragOperationMove;
-
-namespace {
-
-HHOOK msg_hook = NULL;
-DWORD drag_out_thread_id = 0;
-bool mouse_up_received = false;
-
-LRESULT CALLBACK MsgFilterProc(int code, WPARAM wparam, LPARAM lparam) {
-  if (code == base::MessagePumpForUI::kMessageFilterCode &&
-      !mouse_up_received) {
-    MSG* msg = reinterpret_cast<MSG*>(lparam);
-    // We do not care about WM_SYSKEYDOWN and WM_SYSKEYUP because when ALT key
-    // is pressed down on drag-and-drop, it means to create a link.
-    if (msg->message == WM_MOUSEMOVE || msg->message == WM_LBUTTONUP ||
-        msg->message == WM_KEYDOWN || msg->message == WM_KEYUP) {
-      // Forward the message from the UI thread to the drag-and-drop thread.
-      PostThreadMessage(drag_out_thread_id,
-                        msg->message,
-                        msg->wParam,
-                        msg->lParam);
-
-      // If the left button is up, we do not need to forward the message any
-      // more.
-      if (msg->message == WM_LBUTTONUP || !(GetKeyState(VK_LBUTTON) & 0x8000))
-        mouse_up_received = true;
-
-      return TRUE;
-    }
-  }
-  return CallNextHookEx(msg_hook, code, wparam, lparam);
-}
-
-}  // namespace
-
-class DragDropThread : public base::Thread {
- public:
-  explicit DragDropThread(WebContentsDragWin* drag_handler)
-       : base::Thread("Chrome_DragDropThread"),
-         drag_handler_(drag_handler) {
-  }
-
-  virtual ~DragDropThread() {
-    Thread::Stop();
-  }
-
- protected:
-  // base::Thread implementations:
-  virtual void Init() {
-    int ole_result = OleInitialize(NULL);
-    DCHECK(ole_result == S_OK);
-  }
-
-  virtual void CleanUp() {
-    OleUninitialize();
-  }
-
- private:
-  // Hold a reference count to WebContentsDragWin to make sure that it is always
-  // alive in the thread lifetime.
-  scoped_refptr<WebContentsDragWin> drag_handler_;
-
-  DISALLOW_COPY_AND_ASSIGN(DragDropThread);
-};
-
-WebContentsDragWin::WebContentsDragWin(
-    gfx::NativeWindow source_window,
-    content::WebContents* web_contents,
-    WebDragDest* drag_dest,
-    const base::Callback<void()>& drag_end_callback)
-    : drag_drop_thread_id_(0),
-      source_window_(source_window),
-      web_contents_(web_contents),
-      drag_dest_(drag_dest),
-      drag_ended_(false),
-      old_drop_target_suspended_state_(false),
-      drag_end_callback_(drag_end_callback) {
-}
-
-WebContentsDragWin::~WebContentsDragWin() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  DCHECK(!drag_drop_thread_.get());
-}
-
-void WebContentsDragWin::StartDragging(const WebDropData& drop_data,
-                                       WebDragOperationsMask ops,
-                                       const SkBitmap& image,
-                                       const gfx::Point& image_offset) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-
-  drag_source_ = new WebDragSource(source_window_, web_contents_);
-
-  const GURL& page_url = web_contents_->GetURL();
-  const std::string& page_encoding = web_contents_->GetEncoding();
-
-  // If it is not drag-out, do the drag-and-drop in the current UI thread.
-  if (drop_data.download_metadata.empty()) {
-    DoDragging(drop_data, ops, page_url, page_encoding, image, image_offset);
-    EndDragging(false);
-    return;
-  }
-
-  // We do not want to drag and drop the download to itself.
-  old_drop_target_suspended_state_ = drag_dest_->suspended();
-  drag_dest_->set_suspended(true);
-
-  // Start a background thread to do the drag-and-drop.
-  DCHECK(!drag_drop_thread_.get());
-  drag_drop_thread_.reset(new DragDropThread(this));
-  base::Thread::Options options;
-  options.message_loop_type = MessageLoop::TYPE_UI;
-  if (drag_drop_thread_->StartWithOptions(options)) {
-    drag_drop_thread_->message_loop()->PostTask(
-        FROM_HERE,
-        base::Bind(&WebContentsDragWin::StartBackgroundDragging, this,
-                   drop_data, ops, page_url, page_encoding, image,
-                   image_offset));
-  }
-
-  // Install a hook procedure to monitor the messages so that we can forward
-  // the appropriate ones to the background thread.
-  drag_out_thread_id = drag_drop_thread_->thread_id();
-  mouse_up_received = false;
-  DCHECK(!msg_hook);
-  msg_hook = SetWindowsHookEx(WH_MSGFILTER,
-                              MsgFilterProc,
-                              NULL,
-                              GetCurrentThreadId());
-
-  // Attach the input state of the background thread to the UI thread so that
-  // SetCursor can work from the background thread.
-  AttachThreadInput(drag_out_thread_id, GetCurrentThreadId(), TRUE);
-}
-
-void WebContentsDragWin::StartBackgroundDragging(
-    const WebDropData& drop_data,
-    WebDragOperationsMask ops,
-    const GURL& page_url,
-    const std::string& page_encoding,
-    const SkBitmap& image,
-    const gfx::Point& image_offset) {
-  drag_drop_thread_id_ = base::PlatformThread::CurrentId();
-
-  DoDragging(drop_data, ops, page_url, page_encoding, image, image_offset);
-  BrowserThread::PostTask(
-      BrowserThread::UI,
-      FROM_HERE,
-      base::Bind(&WebContentsDragWin::EndDragging, this, true));
-}
-
-void WebContentsDragWin::PrepareDragForDownload(
-    const WebDropData& drop_data,
-    ui::OSExchangeData* data,
-    const GURL& page_url,
-    const std::string& page_encoding) {
-  // Parse the download metadata.
-  string16 mime_type;
-  FilePath file_name;
-  GURL download_url;
-  if (!drag_download_util::ParseDownloadMetadata(drop_data.download_metadata,
-                                                 &mime_type,
-                                                 &file_name,
-                                                 &download_url))
-    return;
-
-  // Generate the file name based on both mime type and proposed file name.
-  std::string default_name =
-      content::GetContentClient()->browser()->GetDefaultDownloadName();
-  FilePath generated_download_file_name =
-      net::GenerateFileName(download_url,
-                            std::string(),
-                            std::string(),
-                            UTF16ToUTF8(file_name.value()),
-                            UTF16ToUTF8(mime_type),
-                            default_name);
-
-  // Provide the data as file (CF_HDROP). A temporary download file with the
-  // Zone.Identifier ADS (Alternate Data Stream) attached will be created.
-  linked_ptr<net::FileStream> empty_file_stream;
-  scoped_refptr<DragDownloadFile> download_file =
-      new DragDownloadFile(generated_download_file_name,
-                           empty_file_stream,
-                           download_url,
-                           page_url,
-                           page_encoding,
-                           web_contents_);
-  ui::OSExchangeData::DownloadFileInfo file_download(FilePath(),
-                                                     download_file.get());
-  data->SetDownloadFileInfo(file_download);
-
-  // Enable asynchronous operation.
-  ui::OSExchangeDataProviderWin::GetIAsyncOperation(*data)->SetAsyncMode(TRUE);
-}
-
-void WebContentsDragWin::PrepareDragForFileContents(
-    const WebDropData& drop_data, ui::OSExchangeData* data) {
-  static const int kMaxFilenameLength = 255;  // FAT and NTFS
-  FilePath file_name(drop_data.file_description_filename);
-  string16 extension = file_name.Extension();
-  file_name = file_name.BaseName().RemoveExtension();
-  // Images without ALT text will only have a file extension so we need to
-  // synthesize one from the provided extension and URL.
-  if (file_name.value().empty()) {
-    // Retrieve the name from the URL.
-    file_name = FilePath(
-        net::GetSuggestedFilename(drop_data.url, "", "", "", "", ""));
-    if (file_name.value().size() + extension.size() > kMaxFilenameLength) {
-      file_name = FilePath(file_name.value().substr(
-          0, kMaxFilenameLength - extension.size()));
-    }
-  }
-  file_name = file_name.ReplaceExtension(extension);
-  data->SetFileContents(file_name, drop_data.file_contents);
-}
-
-void WebContentsDragWin::PrepareDragForUrl(const WebDropData& drop_data,
-                                           ui::OSExchangeData* data) {
-  if (drag_dest_->delegate()->AddDragData(drop_data, data))
-    return;
-
-  data->SetURL(drop_data.url, drop_data.url_title);
-}
-
-void WebContentsDragWin::DoDragging(const WebDropData& drop_data,
-                                    WebDragOperationsMask ops,
-                                    const GURL& page_url,
-                                    const std::string& page_encoding,
-                                    const SkBitmap& image,
-                                    const gfx::Point& image_offset) {
-  ui::OSExchangeData data;
-
-  // TODO(dcheng): Figure out why this is mutually exclusive.
-  if (!drop_data.download_metadata.empty()) {
-    PrepareDragForDownload(drop_data, &data, page_url, page_encoding);
-
-    // Set the observer.
-    ui::OSExchangeDataProviderWin::GetDataObjectImpl(data)->set_observer(this);
-  } else {
-    // We set the file contents before the URL because the URL also sets file
-    // contents (to a .URL shortcut).  We want to prefer file content data over
-    // a shortcut so we add it first.
-    if (!drop_data.file_contents.empty())
-      PrepareDragForFileContents(drop_data, &data);
-    if (!drop_data.text_html.empty())
-      data.SetHtml(drop_data.text_html, drop_data.html_base_url);
-    // We set the text contents before the URL because the URL also sets text
-    // content.
-    if (!drop_data.plain_text.empty())
-      data.SetString(drop_data.plain_text);
-    if (drop_data.url.is_valid())
-      PrepareDragForUrl(drop_data, &data);
-    if (!drop_data.custom_data.empty()) {
-      Pickle pickle;
-      ui::WriteCustomDataToPickle(drop_data.custom_data, &pickle);
-      data.SetPickledData(ui::ClipboardUtil::GetWebCustomDataFormat()->cfFormat,
-                          pickle);
-    }
-  }
-
-  // Set drag image.
-  if (!image.isNull()) {
-    drag_utils::SetDragImageOnDataObject(
-        image, gfx::Size(image.width(), image.height()), image_offset, &data);
-  }
-
-  // We need to enable recursive tasks on the message loop so we can get
-  // updates while in the system DoDragDrop loop.
-  DWORD effect;
-  {
-    MessageLoop::ScopedNestableTaskAllower allow(MessageLoop::current());
-    DoDragDrop(ui::OSExchangeDataProviderWin::GetIDataObject(data),
-               drag_source_,
-               web_drag_utils_win::WebDragOpMaskToWinDragOpMask(ops),
-               &effect);
-  }
-
-  // This works because WebDragSource::OnDragSourceDrop uses PostTask to
-  // dispatch the actual event.
-  drag_source_->set_effect(effect);
-}
-
-void WebContentsDragWin::EndDragging(bool restore_suspended_state) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-
-  if (drag_ended_)
-    return;
-  drag_ended_ = true;
-
-  if (restore_suspended_state)
-    drag_dest_->set_suspended(old_drop_target_suspended_state_);
-
-  if (msg_hook) {
-    AttachThreadInput(drag_out_thread_id, GetCurrentThreadId(), FALSE);
-    UnhookWindowsHookEx(msg_hook);
-    msg_hook = NULL;
-  }
-
-  drag_end_callback_.Run();
-}
-
-void WebContentsDragWin::CancelDrag() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-
-  drag_source_->CancelDrag();
-}
-
-void WebContentsDragWin::CloseThread() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-
-  drag_drop_thread_.reset();
-}
-
-void WebContentsDragWin::OnWaitForData() {
-  DCHECK(drag_drop_thread_id_ == base::PlatformThread::CurrentId());
-
-  // When the left button is release and we start to wait for the data, end
-  // the dragging before DoDragDrop returns. This makes the page leave the drag
-  // mode so that it can start to process the normal input events.
-  BrowserThread::PostTask(
-      BrowserThread::UI,
-      FROM_HERE,
-      base::Bind(&WebContentsDragWin::EndDragging, this, true));
-}
-
-void WebContentsDragWin::OnDataObjectDisposed() {
-  DCHECK(drag_drop_thread_id_ == base::PlatformThread::CurrentId());
-
-  // The drag-and-drop thread is only closed after OLE is done with
-  // DataObjectImpl.
-  BrowserThread::PostTask(
-      BrowserThread::UI,
-      FROM_HERE,
-      base::Bind(&WebContentsDragWin::CloseThread, this));
-}