chrome/browser/ui/gtk/tab_contents/web_drag_bookmark_handler_gtk.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/gtk/tab_contents/web_drag_bookmark_handler_gtk.h"
   6
   7 #include "chrome/browser/ui/browser.h"
   8 #include "chrome/browser/ui/browser_finder.h"
   9 #include "chrome/browser/ui/browser_window.h"
  10 #include "chrome/browser/ui/gtk/bookmarks/bookmark_utils_gtk.h"
  11 #include "chrome/browser/ui/bookmarks/bookmark_tab_helper.h"
  12 #include "chrome/browser/profiles/profile.h"
  13 #include "content/public/browser/web_contents.h"
  14 #include "ui/base/dragdrop/gtk_dnd_util.h"
  15
  16 using content::WebContents;
  17
  18 WebDragBookmarkHandlerGtk::WebDragBookmarkHandlerGtk()
  19     : bookmark_tab_helper_(NULL),
  20       web_contents_(NULL) {
  21 }
  22
  23 WebDragBookmarkHandlerGtk::~WebDragBookmarkHandlerGtk() {}
  24
  25 void WebDragBookmarkHandlerGtk::DragInitialize(WebContents* contents) {
  26   bookmark_drag_data_.Clear();
  27
  28   // Ideally we would want to initialize the the BookmarkTabHelper member in
  29   // the constructor. We cannot do that as the WebDragDestGtk object is
  30   // created during the construction of the WebContents object.  The
  31   // BookmarkTabHelper is created much later.
  32   web_contents_ = contents;
  33   if (!bookmark_tab_helper_)
  34     bookmark_tab_helper_ = BookmarkTabHelper::FromWebContents(contents);
  35 }
  36
  37 GdkAtom WebDragBookmarkHandlerGtk::GetBookmarkTargetAtom() const {
  38   // For GTK, bookmark drag data is encoded as pickle and associated with
  39   // ui::CHROME_BOOKMARK_ITEM. See WriteBookmarksToSelection() for details.
  40   return ui::GetAtomForTarget(ui::CHROME_BOOKMARK_ITEM);
  41 }
  42
  43 void WebDragBookmarkHandlerGtk::OnReceiveDataFromGtk(GtkSelectionData* data) {
  44   Profile* profile =
  45       Profile::FromBrowserContext(web_contents_->GetBrowserContext());
  46   bookmark_drag_data_.ReadFromVector(GetNodesFromSelection(
  47       NULL, data, ui::CHROME_BOOKMARK_ITEM, profile, NULL, NULL));
  48   bookmark_drag_data_.SetOriginatingProfile(profile);
  49 }
  50
  51 void WebDragBookmarkHandlerGtk::OnReceiveProcessedData(
  52     const GURL& url,
  53     const base::string16& title) {
  54   bookmark_drag_data_.ReadFromTuple(url, title);
  55 }
  56
  57 void WebDragBookmarkHandlerGtk::OnDragOver() {
  58   if (bookmark_tab_helper_ && bookmark_tab_helper_->bookmark_drag_delegate()) {
  59     bookmark_tab_helper_->bookmark_drag_delegate()->OnDragOver(
  60         bookmark_drag_data_);
  61   }
  62 }
  63
  64 void WebDragBookmarkHandlerGtk::OnDragEnter() {
  65   // This is non-null if the web_contents_ is showing an ExtensionWebUI with
  66   // support for (at the moment experimental) drag and drop extensions.
  67   if (bookmark_tab_helper_ && bookmark_tab_helper_->bookmark_drag_delegate()) {
  68     bookmark_tab_helper_->bookmark_drag_delegate()->OnDragEnter(
  69         bookmark_drag_data_);
  70   }
  71 }
  72
  73 void WebDragBookmarkHandlerGtk::OnDrop() {
  74   // This is non-null if web_contents_ is showing an ExtensionWebUI with
  75   // support for (at the moment experimental) drag and drop extensions.
  76   if (bookmark_tab_helper_) {
  77     if (bookmark_tab_helper_->bookmark_drag_delegate()) {
  78       bookmark_tab_helper_->bookmark_drag_delegate()->OnDrop(
  79           bookmark_drag_data_);
  80     }
  81
  82     // Focus the target browser.
  83     Browser* browser = chrome::FindBrowserWithWebContents(web_contents_);
  84     if (browser)
  85       browser->window()->Show();
  86   }
  87 }
  88
  89 void WebDragBookmarkHandlerGtk::OnDragLeave() {
  90   if (bookmark_tab_helper_ && bookmark_tab_helper_->bookmark_drag_delegate()) {
  91     bookmark_tab_helper_->bookmark_drag_delegate()->OnDragLeave(
  92         bookmark_drag_data_);
  93   }
  94 }