chrome/browser/ui/views/bookmarks/bookmark_menu_delegate.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/views/bookmarks/bookmark_menu_delegate.h"
   6
   7 #include "base/prefs/pref_service.h"
   8 #include "base/strings/utf_string_conversions.h"
   9 #include "chrome/browser/bookmarks/bookmark_model.h"
  10 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
  11 #include "chrome/browser/profiles/profile.h"
  12 #include "chrome/browser/ui/bookmarks/bookmark_drag_drop.h"
  13 #include "chrome/browser/ui/bookmarks/bookmark_utils.h"
  14 #include "chrome/browser/ui/browser.h"
  15 #include "chrome/browser/ui/views/bookmarks/bookmark_bar_view.h"
  16 #include "chrome/browser/ui/views/bookmarks/bookmark_drag_drop_views.h"
  17 #include "chrome/browser/ui/views/event_utils.h"
  18 #include "chrome/common/pref_names.h"
  19 #include "content/public/browser/page_navigator.h"
  20 #include "content/public/browser/user_metrics.h"
  21 #include "grit/generated_resources.h"
  22 #include "grit/theme_resources.h"
  23 #include "grit/ui_resources.h"
  24 #include "ui/base/dragdrop/os_exchange_data.h"
  25 #include "ui/base/l10n/l10n_util.h"
  26 #include "ui/base/resource/resource_bundle.h"
  27 #include "ui/base/window_open_disposition.h"
  28 #include "ui/views/controls/button/menu_button.h"
  29 #include "ui/views/controls/menu/menu_item_view.h"
  30 #include "ui/views/controls/menu/submenu_view.h"
  31 #include "ui/views/widget/widget.h"
  32
  33 using base::UserMetricsAction;
  34 using content::PageNavigator;
  35 using views::MenuItemView;
  36
  37 // Max width of a menu. There does not appear to be an OS value for this, yet
  38 // both IE and FF restrict the max width of a menu.
  39 static const int kMaxMenuWidth = 400;
  40
  41 BookmarkMenuDelegate::BookmarkMenuDelegate(Browser* browser,
  42                                            PageNavigator* navigator,
  43                                            views::Widget* parent,
  44                                            int first_menu_id,
  45                                            int max_menu_id)
  46     : browser_(browser),
  47       profile_(browser->profile()),
  48       page_navigator_(navigator),
  49       parent_(parent),
  50       menu_(NULL),
  51       for_drop_(false),
  52       parent_menu_item_(NULL),
  53       next_menu_id_(first_menu_id),
  54       min_menu_id_(first_menu_id),
  55       max_menu_id_(max_menu_id),
  56       real_delegate_(NULL),
  57       is_mutating_model_(false),
  58       location_(BOOKMARK_LAUNCH_LOCATION_NONE) {}
  59
  60 BookmarkMenuDelegate::~BookmarkMenuDelegate() {
  61   GetBookmarkModel()->RemoveObserver(this);
  62 }
  63
  64 void BookmarkMenuDelegate::Init(views::MenuDelegate* real_delegate,
  65                                 MenuItemView* parent,
  66                                 const BookmarkNode* node,
  67                                 int start_child_index,
  68                                 ShowOptions show_options,
  69                                 BookmarkLaunchLocation location) {
  70   GetBookmarkModel()->AddObserver(this);
  71   real_delegate_ = real_delegate;
  72   location_ = location;
  73   if (parent) {
  74     parent_menu_item_ = parent;
  75     int initial_count = parent->GetSubmenu() ?
  76         parent->GetSubmenu()->GetMenuItemCount() : 0;
  77     if ((start_child_index < node->child_count()) &&
  78         (initial_count > 0)) {
  79       parent->AppendSeparator();
  80     }
  81     BuildMenu(node, start_child_index, parent, &next_menu_id_);
  82     if (show_options == SHOW_PERMANENT_FOLDERS)
  83       BuildMenusForPermanentNodes(parent, &next_menu_id_);
  84   } else {
  85     menu_ = CreateMenu(node, start_child_index, show_options);
  86   }
  87 }
  88
  89 void BookmarkMenuDelegate::SetPageNavigator(PageNavigator* navigator) {
  90   page_navigator_ = navigator;
  91   if (context_menu_.get())
  92     context_menu_->SetPageNavigator(navigator);
  93 }
  94
  95 BookmarkModel* BookmarkMenuDelegate::GetBookmarkModel() {
  96   return BookmarkModelFactory::GetForProfile(profile_);
  97 }
  98
  99 void BookmarkMenuDelegate::SetActiveMenu(const BookmarkNode* node,
 100                                          int start_index) {
 101   DCHECK(!parent_menu_item_);
 102   if (!node_to_menu_map_[node])
 103     CreateMenu(node, start_index, HIDE_PERMANENT_FOLDERS);
 104   menu_ = node_to_menu_map_[node];
 105 }
 106
 107 base::string16 BookmarkMenuDelegate::GetTooltipText(
 108     int id,
 109     const gfx::Point& screen_loc) const {
 110   MenuIDToNodeMap::const_iterator i = menu_id_to_node_map_.find(id);
 111   // When removing bookmarks it may be possible to end up here without a node.
 112   if (i == menu_id_to_node_map_.end()) {
 113     DCHECK(is_mutating_model_);
 114     return base::string16();
 115   }
 116
 117   const BookmarkNode* node = i->second;
 118   if (node->is_url()) {
 119     return BookmarkBarView::CreateToolTipForURLAndTitle(
 120         parent_, screen_loc, node->url(), node->GetTitle(), profile_);
 121   }
 122   return base::string16();
 123 }
 124
 125 bool BookmarkMenuDelegate::IsTriggerableEvent(views::MenuItemView* menu,
 126                                               const ui::Event& e) {
 127   return e.type() == ui::ET_GESTURE_TAP ||
 128          e.type() == ui::ET_GESTURE_TAP_DOWN ||
 129          event_utils::IsPossibleDispositionEvent(e);
 130 }
 131
 132 void BookmarkMenuDelegate::ExecuteCommand(int id, int mouse_event_flags) {
 133   DCHECK(menu_id_to_node_map_.find(id) != menu_id_to_node_map_.end());
 134
 135   const BookmarkNode* node = menu_id_to_node_map_[id];
 136   std::vector<const BookmarkNode*> selection;
 137   selection.push_back(node);
 138
 139   chrome::OpenAll(parent_->GetNativeWindow(), page_navigator_, selection,
 140                   ui::DispositionFromEventFlags(mouse_event_flags),
 141                   profile_);
 142   RecordBookmarkLaunch(node, location_);
 143 }
 144
 145 bool BookmarkMenuDelegate::ShouldExecuteCommandWithoutClosingMenu(
 146     int id,
 147     const ui::Event& event) {
 148   return (event.flags() & ui::EF_LEFT_MOUSE_BUTTON) &&
 149          ui::DispositionFromEventFlags(event.flags()) == NEW_BACKGROUND_TAB;
 150 }
 151
 152 bool BookmarkMenuDelegate::GetDropFormats(
 153     MenuItemView* menu,
 154     int* formats,
 155     std::set<ui::OSExchangeData::CustomFormat>* custom_formats) {
 156   *formats = ui::OSExchangeData::URL;
 157   custom_formats->insert(BookmarkNodeData::GetBookmarkCustomFormat());
 158   return true;
 159 }
 160
 161 bool BookmarkMenuDelegate::AreDropTypesRequired(MenuItemView* menu) {
 162   return true;
 163 }
 164
 165 bool BookmarkMenuDelegate::CanDrop(MenuItemView* menu,
 166                                    const ui::OSExchangeData& data) {
 167   // Only accept drops of 1 node, which is the case for all data dragged from
 168   // bookmark bar and menus.
 169
 170   if (!drop_data_.Read(data) || drop_data_.elements.size() != 1 ||
 171       !profile_->GetPrefs()->GetBoolean(prefs::kEditBookmarksEnabled))
 172     return false;
 173
 174   if (drop_data_.has_single_url())
 175     return true;
 176
 177   const BookmarkNode* drag_node = drop_data_.GetFirstNode(profile_);
 178   if (!drag_node) {
 179     // Dragging a folder from another profile, always accept.
 180     return true;
 181   }
 182
 183   // Drag originated from same profile and is not a URL. Only accept it if
 184   // the dragged node is not a parent of the node menu represents.
 185   if (menu_id_to_node_map_.find(menu->GetCommand()) ==
 186       menu_id_to_node_map_.end()) {
 187     // If we don't know the menu assume its because we're embedded. We'll
 188     // figure out the real operation when GetDropOperation is invoked.
 189     return true;
 190   }
 191   const BookmarkNode* drop_node = menu_id_to_node_map_[menu->GetCommand()];
 192   DCHECK(drop_node);
 193   while (drop_node && drop_node != drag_node)
 194     drop_node = drop_node->parent();
 195   return (drop_node == NULL);
 196 }
 197
 198 int BookmarkMenuDelegate::GetDropOperation(
 199     MenuItemView* item,
 200     const ui::DropTargetEvent& event,
 201     views::MenuDelegate::DropPosition* position) {
 202   // Should only get here if we have drop data.
 203   DCHECK(drop_data_.is_valid());
 204
 205   const BookmarkNode* node = menu_id_to_node_map_[item->GetCommand()];
 206   const BookmarkNode* drop_parent = node->parent();
 207   int index_to_drop_at = drop_parent->GetIndexOf(node);
 208   BookmarkModel* model = GetBookmarkModel();
 209   switch (*position) {
 210     case views::MenuDelegate::DROP_AFTER:
 211       if (node == model->other_node() || node == model->mobile_node()) {
 212         // Dropping after these nodes makes no sense.
 213         *position = views::MenuDelegate::DROP_NONE;
 214       }
 215       index_to_drop_at++;
 216       break;
 217
 218     case views::MenuDelegate::DROP_BEFORE:
 219       if (node == model->mobile_node()) {
 220         // Dropping before this node makes no sense.
 221         *position = views::MenuDelegate::DROP_NONE;
 222       }
 223       break;
 224
 225     case views::MenuDelegate::DROP_ON:
 226       drop_parent = node;
 227       index_to_drop_at = node->child_count();
 228       break;
 229
 230     default:
 231       break;
 232   }
 233   DCHECK(drop_parent);
 234   return chrome::GetBookmarkDropOperation(profile_, event, drop_data_,
 235                                           drop_parent, index_to_drop_at);
 236 }
 237
 238 int BookmarkMenuDelegate::OnPerformDrop(
 239     MenuItemView* menu,
 240     views::MenuDelegate::DropPosition position,
 241     const ui::DropTargetEvent& event) {
 242   const BookmarkNode* drop_node = menu_id_to_node_map_[menu->GetCommand()];
 243   DCHECK(drop_node);
 244   BookmarkModel* model = GetBookmarkModel();
 245   DCHECK(model);
 246   const BookmarkNode* drop_parent = drop_node->parent();
 247   DCHECK(drop_parent);
 248   int index_to_drop_at = drop_parent->GetIndexOf(drop_node);
 249   switch (position) {
 250     case views::MenuDelegate::DROP_AFTER:
 251       index_to_drop_at++;
 252       break;
 253
 254     case views::MenuDelegate::DROP_ON:
 255       DCHECK(drop_node->is_folder());
 256       drop_parent = drop_node;
 257       index_to_drop_at = drop_node->child_count();
 258       break;
 259
 260     case views::MenuDelegate::DROP_BEFORE:
 261       if (drop_node == model->other_node() ||
 262           drop_node == model->mobile_node()) {
 263         // This can happen with SHOW_PERMANENT_FOLDERS.
 264         drop_parent = model->bookmark_bar_node();
 265         index_to_drop_at = drop_parent->child_count();
 266       }
 267       break;
 268
 269     default:
 270       break;
 271   }
 272
 273   return chrome::DropBookmarks(profile_, drop_data_,
 274                                drop_parent, index_to_drop_at);
 275 }
 276
 277 bool BookmarkMenuDelegate::ShowContextMenu(MenuItemView* source,
 278                                            int id,
 279                                            const gfx::Point& p,
 280                                            ui::MenuSourceType source_type) {
 281   DCHECK(menu_id_to_node_map_.find(id) != menu_id_to_node_map_.end());
 282   std::vector<const BookmarkNode*> nodes;
 283   nodes.push_back(menu_id_to_node_map_[id]);
 284   bool close_on_delete = !parent_menu_item_ &&
 285       (nodes[0]->parent() == GetBookmarkModel()->other_node() &&
 286        nodes[0]->parent()->child_count() == 1);
 287   context_menu_.reset(
 288       new BookmarkContextMenu(
 289           parent_,
 290           browser_,
 291           profile_,
 292           page_navigator_,
 293           nodes[0]->parent(),
 294           nodes,
 295           close_on_delete));
 296   context_menu_->set_observer(this);
 297   context_menu_->RunMenuAt(p, source_type);
 298   context_menu_.reset(NULL);
 299   return true;
 300 }
 301
 302 bool BookmarkMenuDelegate::CanDrag(MenuItemView* menu) {
 303   const BookmarkNode* node = menu_id_to_node_map_[menu->GetCommand()];
 304   // Don't let users drag the other folder.
 305   return node->parent() != GetBookmarkModel()->root_node();
 306 }
 307
 308 void BookmarkMenuDelegate::WriteDragData(MenuItemView* sender,
 309                                          ui::OSExchangeData* data) {
 310   DCHECK(sender && data);
 311
 312   content::RecordAction(UserMetricsAction("BookmarkBar_DragFromFolder"));
 313
 314   BookmarkNodeData drag_data(menu_id_to_node_map_[sender->GetCommand()]);
 315   drag_data.Write(profile_, data);
 316 }
 317
 318 int BookmarkMenuDelegate::GetDragOperations(MenuItemView* sender) {
 319   return chrome::GetBookmarkDragOperation(
 320       profile_, menu_id_to_node_map_[sender->GetCommand()]);
 321 }
 322
 323 int BookmarkMenuDelegate::GetMaxWidthForMenu(MenuItemView* menu) {
 324   return kMaxMenuWidth;
 325 }
 326
 327 void BookmarkMenuDelegate::BookmarkModelChanged() {
 328 }
 329
 330 void BookmarkMenuDelegate::BookmarkNodeFaviconChanged(
 331     BookmarkModel* model,
 332     const BookmarkNode* node) {
 333   NodeToMenuMap::iterator menu_pair = node_to_menu_map_.find(node);
 334   if (menu_pair == node_to_menu_map_.end())
 335     return;  // We're not showing a menu item for the node.
 336
 337   menu_pair->second->SetIcon(model->GetFavicon(node).AsImageSkia());
 338 }
 339
 340 void BookmarkMenuDelegate::WillRemoveBookmarks(
 341     const std::vector<const BookmarkNode*>& bookmarks) {
 342   DCHECK(!is_mutating_model_);
 343   is_mutating_model_ = true;  // Set to false in DidRemoveBookmarks().
 344
 345   // Remove the observer so that when the remove happens we don't prematurely
 346   // cancel the menu. The observer is added back in DidRemoveBookmarks().
 347   GetBookmarkModel()->RemoveObserver(this);
 348
 349   // Remove the menu items.
 350   std::set<MenuItemView*> changed_parent_menus;
 351   for (std::vector<const BookmarkNode*>::const_iterator i(bookmarks.begin());
 352        i != bookmarks.end(); ++i) {
 353     NodeToMenuMap::iterator node_to_menu = node_to_menu_map_.find(*i);
 354     if (node_to_menu != node_to_menu_map_.end()) {
 355       MenuItemView* menu = node_to_menu->second;
 356       MenuItemView* parent = menu->GetParentMenuItem();
 357       // |parent| is NULL when removing a root. This happens when right clicking
 358       // to delete an empty folder.
 359       if (parent) {
 360         changed_parent_menus.insert(parent);
 361         parent->RemoveMenuItemAt(menu->parent()->GetIndexOf(menu));
 362       }
 363       node_to_menu_map_.erase(node_to_menu);
 364       menu_id_to_node_map_.erase(menu->GetCommand());
 365     }
 366   }
 367
 368   // All the bookmarks in |bookmarks| should have the same parent. It's possible
 369   // to support different parents, but this would need to prune any nodes whose
 370   // parent has been removed. As all nodes currently have the same parent, there
 371   // is the DCHECK.
 372   DCHECK(changed_parent_menus.size() <= 1);
 373
 374   // Remove any descendants of the removed nodes in |node_to_menu_map_|.
 375   for (NodeToMenuMap::iterator i(node_to_menu_map_.begin());
 376        i != node_to_menu_map_.end(); ) {
 377     bool ancestor_removed = false;
 378     for (std::vector<const BookmarkNode*>::const_iterator j(bookmarks.begin());
 379          j != bookmarks.end(); ++j) {
 380       if (i->first->HasAncestor(*j)) {
 381         ancestor_removed = true;
 382         break;
 383       }
 384     }
 385     if (ancestor_removed) {
 386       menu_id_to_node_map_.erase(i->second->GetCommand());
 387       node_to_menu_map_.erase(i++);
 388     } else {
 389       ++i;
 390     }
 391   }
 392
 393   for (std::set<MenuItemView*>::const_iterator i(changed_parent_menus.begin());
 394        i != changed_parent_menus.end(); ++i)
 395     (*i)->ChildrenChanged();
 396 }
 397
 398 void BookmarkMenuDelegate::DidRemoveBookmarks() {
 399   // Balances remove in WillRemoveBookmarksImpl.
 400   GetBookmarkModel()->AddObserver(this);
 401   DCHECK(is_mutating_model_);
 402   is_mutating_model_ = false;
 403 }
 404
 405 MenuItemView* BookmarkMenuDelegate::CreateMenu(const BookmarkNode* parent,
 406                                                int start_child_index,
 407                                                ShowOptions show_options) {
 408   MenuItemView* menu = new MenuItemView(real_delegate_);
 409   menu->SetCommand(next_menu_id_++);
 410   menu_id_to_node_map_[menu->GetCommand()] = parent;
 411   menu->set_has_icons(true);
 412   BuildMenu(parent, start_child_index, menu, &next_menu_id_);
 413   if (show_options == SHOW_PERMANENT_FOLDERS)
 414     BuildMenusForPermanentNodes(menu, &next_menu_id_);
 415   return menu;
 416 }
 417
 418 void BookmarkMenuDelegate::BuildMenusForPermanentNodes(
 419     views::MenuItemView* menu,
 420     int* next_menu_id) {
 421   BookmarkModel* model = GetBookmarkModel();
 422   bool added_separator = false;
 423   BuildMenuForPermanentNode(model->other_node(), menu, next_menu_id,
 424                             &added_separator);
 425   BuildMenuForPermanentNode(model->mobile_node(), menu, next_menu_id,
 426                             &added_separator);
 427 }
 428
 429 void BookmarkMenuDelegate::BuildMenuForPermanentNode(
 430     const BookmarkNode* node,
 431     MenuItemView* menu,
 432     int* next_menu_id,
 433     bool* added_separator) {
 434   if (!node->IsVisible() || node->GetTotalNodeCount() == 1)
 435     return;  // No children, don't create a menu.
 436
 437   int id = *next_menu_id;
 438   // Don't create the submenu if its menu ID will be outside the range allowed.
 439   if (IsOutsideMenuIdRange(id))
 440     return;
 441   (*next_menu_id)++;
 442
 443   if (!*added_separator) {
 444     *added_separator = true;
 445     menu->AppendSeparator();
 446   }
 447
 448   ui::ResourceBundle* rb = &ui::ResourceBundle::GetSharedInstance();
 449   gfx::ImageSkia* folder_icon = rb->GetImageSkiaNamed(IDR_BOOKMARK_BAR_FOLDER);
 450   MenuItemView* submenu = menu->AppendSubMenuWithIcon(
 451       id, node->GetTitle(), *folder_icon);
 452   BuildMenu(node, 0, submenu, next_menu_id);
 453   menu_id_to_node_map_[id] = node;
 454 }
 455
 456 void BookmarkMenuDelegate::BuildMenu(const BookmarkNode* parent,
 457                                      int start_child_index,
 458                                      MenuItemView* menu,
 459                                      int* next_menu_id) {
 460   node_to_menu_map_[parent] = menu;
 461   DCHECK(parent->empty() || start_child_index < parent->child_count());
 462   ui::ResourceBundle* rb = &ui::ResourceBundle::GetSharedInstance();
 463   for (int i = start_child_index; i < parent->child_count(); ++i) {
 464     const BookmarkNode* node = parent->GetChild(i);
 465     const int id = *next_menu_id;
 466     // Don't create the item if its menu ID will be outside the range allowed.
 467     if (IsOutsideMenuIdRange(id))
 468       break;
 469
 470     (*next_menu_id)++;
 471
 472     menu_id_to_node_map_[id] = node;
 473     if (node->is_url()) {
 474       const gfx::Image& image = GetBookmarkModel()->GetFavicon(node);
 475       const gfx::ImageSkia* icon = image.IsEmpty() ?
 476           rb->GetImageSkiaNamed(IDR_DEFAULT_FAVICON) : image.ToImageSkia();
 477       node_to_menu_map_[node] =
 478           menu->AppendMenuItemWithIcon(id, node->GetTitle(), *icon);
 479     } else if (node->is_folder()) {
 480       gfx::ImageSkia* folder_icon =
 481           rb->GetImageSkiaNamed(IDR_BOOKMARK_BAR_FOLDER);
 482       MenuItemView* submenu = menu->AppendSubMenuWithIcon(
 483           id, node->GetTitle(), *folder_icon);
 484       BuildMenu(node, 0, submenu, next_menu_id);
 485     } else {
 486       NOTREACHED();
 487     }
 488   }
 489 }
 490
 491 bool BookmarkMenuDelegate::IsOutsideMenuIdRange(int menu_id) const {
 492   return menu_id < min_menu_id_ || menu_id > max_menu_id_;
 493 }