chrome/browser/ui/aura/tab_contents/web_drag_bookmark_handler_aura.h

   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 #ifndef CHROME_BROWSER_UI_AURA_TAB_CONTENTS_WEB_DRAG_BOOKMARK_HANDLER_AURA_H_
   6 #define CHROME_BROWSER_UI_AURA_TAB_CONTENTS_WEB_DRAG_BOOKMARK_HANDLER_AURA_H_
   7
   8 #include "components/bookmarks/browser/bookmark_node_data.h"
   9 #include "content/public/browser/web_contents.h"
  10 #include "content/public/browser/web_drag_dest_delegate.h"
  11
  12 class BookmarkTabHelper;
  13
  14 namespace content {
  15 class WebContents;
  16 }
  17
  18 // Chrome needs to intercept content drag events so it can dispatch them to the
  19 // bookmarks and extensions system.
  20 // Note that unlike the other platforms, Aura doesn't use all of the
  21 // WebDragDest infrastructure, just the WebDragDestDelegate.
  22 class WebDragBookmarkHandlerAura : public content::WebDragDestDelegate {
  23  public:
  24   WebDragBookmarkHandlerAura();
  25   ~WebDragBookmarkHandlerAura() override;
  26
  27   // Overridden from content::WebDragDestDelegate:
  28   void DragInitialize(content::WebContents* contents) override;
  29   void OnDragOver() override;
  30   void OnDragEnter() override;
  31   void OnDrop() override;
  32   void OnDragLeave() override;
  33
  34   void OnReceiveDragData(const ui::OSExchangeData& data) override;
  35
  36  private:
  37   // The BookmarkTabHelper.
  38   // Weak reference; may be NULL if the contents don't have a
  39   // BookmarkTabHelper (e.g. WebUI dialogs).
  40   BookmarkTabHelper* bookmark_tab_helper_;
  41
  42   content::WebContents* web_contents_;
  43
  44   // The bookmark data for the active drag.  Empty when there is no active drag.
  45   bookmarks::BookmarkNodeData bookmark_drag_data_;
  46
  47   DISALLOW_COPY_AND_ASSIGN(WebDragBookmarkHandlerAura);
  48 };
  49
  50 #endif  // CHROME_BROWSER_UI_AURA_TAB_CONTENTS_WEB_DRAG_BOOKMARK_HANDLER_AURA_H_