chrome/browser/ui/aura/tab_contents/web_drag_bookmark_handler_aura.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/ui/aura/tab_contents/web_drag_bookmark_handler_aura.h"
   6
   7 #include "chrome/browser/ui/bookmarks/bookmark_tab_helper.h"
   8 #include "chrome/browser/ui/browser.h"
   9 #include "chrome/browser/ui/browser_finder.h"
  10 #include "chrome/browser/ui/browser_window.h"
  11 #include "components/bookmarks/browser/bookmark_node_data.h"
  12 #include "content/public/browser/web_contents.h"
  13 #include "ui/base/dragdrop/os_exchange_data.h"
  14
  15 using content::WebContents;
  16
  17 WebDragBookmarkHandlerAura::WebDragBookmarkHandlerAura()
  18     : bookmark_tab_helper_(NULL),
  19       web_contents_(NULL) {
  20 }
  21
  22 WebDragBookmarkHandlerAura::~WebDragBookmarkHandlerAura() {
  23 }
  24
  25 void WebDragBookmarkHandlerAura::DragInitialize(WebContents* contents) {
  26   // Ideally we would want to initialize the the BookmarkTabHelper member in
  27   // the constructor. We cannot do that as the WebDragDest object is
  28   // created during the construction of the WebContents object.  The
  29   // BookmarkTabHelper is created much later.
  30   web_contents_ = contents;
  31   if (!bookmark_tab_helper_)
  32     bookmark_tab_helper_ = BookmarkTabHelper::FromWebContents(contents);
  33 }
  34
  35 void WebDragBookmarkHandlerAura::OnDragOver() {
  36   if (bookmark_tab_helper_ && bookmark_tab_helper_->bookmark_drag_delegate()) {
  37     if (bookmark_drag_data_.is_valid())
  38       bookmark_tab_helper_->bookmark_drag_delegate()->OnDragOver(
  39           bookmark_drag_data_);
  40   }
  41 }
  42
  43 void WebDragBookmarkHandlerAura::OnReceiveDragData(
  44     const ui::OSExchangeData& data) {
  45   if (bookmark_tab_helper_ && bookmark_tab_helper_->bookmark_drag_delegate()) {
  46     // Read the bookmark drag data and save it for use in later events in this
  47     // drag.
  48     bookmark_drag_data_.Read(data);
  49   }
  50 }
  51
  52 void WebDragBookmarkHandlerAura::OnDragEnter() {
  53   if (bookmark_tab_helper_ && bookmark_tab_helper_->bookmark_drag_delegate()) {
  54     if (bookmark_drag_data_.is_valid())
  55       bookmark_tab_helper_->bookmark_drag_delegate()->OnDragEnter(
  56           bookmark_drag_data_);
  57   }
  58 }
  59
  60 void WebDragBookmarkHandlerAura::OnDrop() {
  61   if (bookmark_tab_helper_) {
  62     if (bookmark_tab_helper_->bookmark_drag_delegate()) {
  63       if (bookmark_drag_data_.is_valid()) {
  64         bookmark_tab_helper_->bookmark_drag_delegate()->OnDrop(
  65             bookmark_drag_data_);
  66       }
  67     }
  68
  69     // Focus the target browser.
  70     Browser* browser = chrome::FindBrowserWithWebContents(web_contents_);
  71     if (browser)
  72       browser->window()->Show();
  73   }
  74
  75   bookmark_drag_data_.Clear();
  76 }
  77
  78 void WebDragBookmarkHandlerAura::OnDragLeave() {
  79   if (bookmark_tab_helper_ && bookmark_tab_helper_->bookmark_drag_delegate()) {
  80     if (bookmark_drag_data_.is_valid())
  81       bookmark_tab_helper_->bookmark_drag_delegate()->OnDragLeave(
  82           bookmark_drag_data_);
  83   }
  84
  85   bookmark_drag_data_.Clear();
  86 }