Separate out the Windows bookmark handling code out of the core drag & drop target class. This matc…

chrome/browser/tab_contents/web_drag_bookmark_handler_win.cc

+// Copyright (c) 2011 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 "chrome/browser/tab_contents/web_drag_bookmark_handler_win.h"
+
+#include "chrome/browser/bookmarks/bookmark_node_data.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/browser_window.h"
+#include "chrome/browser/ui/bookmarks/bookmark_tab_helper.h"
+#include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
+#include "chrome/browser/profiles/profile.h"
+#include "content/public/browser/web_contents.h"
+#include "ui/base/dragdrop/os_exchange_data.h"
+#include "ui/base/dragdrop/os_exchange_data_provider_win.h"
+
+using content::WebContents;
+
+WebDragBookmarkHandlerWin::WebDragBookmarkHandlerWin()
+    : tab_(NULL) {
+}
+
+WebDragBookmarkHandlerWin::~WebDragBookmarkHandlerWin() {
+}
+
+void WebDragBookmarkHandlerWin::DragInitialize(WebContents* contents) {
+  // Ideally we would want to initialize the the TabContentsWrapper member in
+  // the constructor. We cannot do that as the WebDragTargetWin object is
+  // created during the construction of the TabContents object.  The
+  // TabContentsWrapper is created much later.
+  DCHECK(tab_ ? (tab_->web_contents() == contents) : true);
+  if (!tab_)
+    tab_ = TabContentsWrapper::GetCurrentWrapperForContents(contents);
+}
+
+void WebDragBookmarkHandlerWin::OnDragOver(IDataObject* data_object) {
+  if (tab_ && tab_->bookmark_tab_helper()->GetBookmarkDragDelegate()) {
+    ui::OSExchangeData os_exchange_data(
+        new ui::OSExchangeDataProviderWin(data_object));
+    BookmarkNodeData bookmark_drag_data;
+    if (bookmark_drag_data.Read(os_exchange_data))
+      tab_->bookmark_tab_helper()->GetBookmarkDragDelegate()->OnDragOver(
+          bookmark_drag_data);
+  }
+}
+
+void WebDragBookmarkHandlerWin::OnDragEnter(IDataObject* data_object) {
+  // This is non-null if web_contents_ is showing an ExtensionWebUI with
+  // support for (at the moment experimental) drag and drop extensions.
+  if (tab_ && tab_->bookmark_tab_helper()->GetBookmarkDragDelegate()) {
+    ui::OSExchangeData os_exchange_data(
+        new ui::OSExchangeDataProviderWin(data_object));
+    BookmarkNodeData bookmark_drag_data;
+    if (bookmark_drag_data.Read(os_exchange_data))
+      tab_->bookmark_tab_helper()->GetBookmarkDragDelegate()->OnDragEnter(
+          bookmark_drag_data);
+  }
+}
+
+void WebDragBookmarkHandlerWin::OnDrop(IDataObject* data_object) {
+  // This is non-null if tab_contents_ is showing an ExtensionWebUI with
+  // support for (at the moment experimental) drag and drop extensions.
+  if (tab_) {
+    if (tab_->bookmark_tab_helper()->GetBookmarkDragDelegate()) {
+      ui::OSExchangeData os_exchange_data(
+          new ui::OSExchangeDataProviderWin(data_object));
+      BookmarkNodeData bookmark_drag_data;
+      if (bookmark_drag_data.Read(os_exchange_data)) {
+        tab_->bookmark_tab_helper()->GetBookmarkDragDelegate()->OnDrop(
+            bookmark_drag_data);
+      }
+    }
+
+    // Focus the target browser.
+    Browser* browser = Browser::GetBrowserForController(
+        &tab_->web_contents()->GetController(), NULL);
+    if (browser)
+      browser->window()->Show();
+  }
+}
+
+void WebDragBookmarkHandlerWin::OnDragLeave(IDataObject* data_object) {
+  if (tab_ && tab_->bookmark_tab_helper()->GetBookmarkDragDelegate()) {
+    ui::OSExchangeData os_exchange_data(
+        new ui::OSExchangeDataProviderWin(data_object));
+    BookmarkNodeData bookmark_drag_data;
+    if (bookmark_drag_data.Read(os_exchange_data))
+      tab_->bookmark_tab_helper()->GetBookmarkDragDelegate()->OnDragLeave(
+          bookmark_drag_data);
+  }
+}