GTK: Implement the global bookmarks menu.

chrome/browser/ui/gtk/global_bookmark_menu.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/ui/gtk/global_bookmark_menu.h"
+
+#include <gtk/gtk.h>
+
+#include "base/logging.h"
+#include "base/utf_string_conversions.h"
+#include "chrome/browser/bookmarks/bookmark_model.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/gtk/global_bookmark_menu.h"
+#include "chrome/browser/ui/gtk/global_menu_bar.h"
+#include "chrome/browser/ui/gtk/gtk_theme_service.h"
+#include "chrome/browser/ui/gtk/gtk_util.h"
+#include "content/common/notification_service.h"
+#include "grit/generated_resources.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "ui/gfx/gtk_util.h"
+
+namespace {
+
+const int kMaxChars = 50;
+
+}  // namespace
+
+GlobalBookmarkMenu::GlobalBookmarkMenu(Browser* browser)
+    : browser_(browser),
+      profile_(browser->profile()),
+      default_favicon_(NULL),
+      ALLOW_THIS_IN_INITIALIZER_LIST(method_factory_(this)) {
+  DCHECK(profile_);
+
+  default_favicon_ = GtkThemeService::GetDefaultFavicon(true);
+  default_folder_ = GtkThemeService::GetFolderIcon(true);
+  registrar_.Add(this, NotificationType::BROWSER_THEME_CHANGED,
+                 Source<Profile>(profile_));
+}
+
+GlobalBookmarkMenu::~GlobalBookmarkMenu() {
+  profile_->GetBookmarkModel()->RemoveObserver(this);
+}
+
+void GlobalBookmarkMenu::Init(GtkWidget* bookmark_menu) {
+  bookmark_menu_ = bookmark_menu;
+
+  BookmarkModel* model = profile_->GetBookmarkModel();
+  model->AddObserver(this);
+  if (model->IsLoaded())
+    Loaded(model);
+}
+
+void GlobalBookmarkMenu::RebuildMenuInFuture() {
+  method_factory_.RevokeAll();
+  MessageLoop::current()->PostTask(
+      FROM_HERE,
+      method_factory_.NewRunnableMethod(&GlobalBookmarkMenu::RebuildMenu));
+}
+
+void GlobalBookmarkMenu::RebuildMenu() {
+  BookmarkModel* model = profile_->GetBookmarkModel();
+  DCHECK(model);
+  DCHECK(model->IsLoaded());
+
+  ClearBookmarkMenu();
+
+  const BookmarkNode* bar_node = model->GetBookmarkBarNode();
+  if (bar_node->child_count()) {
+    AddBookmarkMenuItem(bookmark_menu_, gtk_separator_menu_item_new());
+    AddNodeToMenu(bar_node, bookmark_menu_);
+  }
+
+  // Only display the other bookmarks folder in the menu if it has items in it.
+  const BookmarkNode* other_node = model->other_node();
+  if (other_node->child_count()) {
+    GtkWidget* submenu = gtk_menu_new();
+    AddNodeToMenu(other_node, submenu);
+
+    AddBookmarkMenuItem(bookmark_menu_, gtk_separator_menu_item_new());
+
+    GtkWidget* menu_item = gtk_image_menu_item_new_with_label(
+        l10n_util::GetStringUTF8(IDS_BOOMARK_BAR_OTHER_FOLDER_NAME).c_str());
+    gtk_menu_item_set_submenu(GTK_MENU_ITEM(menu_item), submenu);
+    gtk_image_menu_item_set_image(
+        GTK_IMAGE_MENU_ITEM(menu_item),
+        gtk_image_new_from_pixbuf(default_folder_));
+
+    AddBookmarkMenuItem(bookmark_menu_, menu_item);
+  }
+}
+
+void GlobalBookmarkMenu::AddBookmarkMenuItem(GtkWidget* menu,
+                                             GtkWidget* menu_item) {
+  g_object_set_data(G_OBJECT(menu_item), "type-tag",
+                    GINT_TO_POINTER(GlobalMenuBar::TAG_BOOKMARK_CLEARABLE));
+  gtk_menu_shell_append(GTK_MENU_SHELL(menu), menu_item);
+  gtk_widget_show(menu_item);
+}
+
+void GlobalBookmarkMenu::AddNodeToMenu(const BookmarkNode* node,
+                                       GtkWidget* menu) {
+  int child_count = node->child_count();
+  if (!child_count) {
+    GtkWidget* item = gtk_menu_item_new_with_label(
+        l10n_util::GetStringUTF8(IDS_MENU_EMPTY_SUBMENU).c_str());
+    gtk_widget_set_sensitive(item, FALSE);
+    AddBookmarkMenuItem(menu, item);
+  } else {
+    for (int i = 0; i < child_count; i++) {
+      const BookmarkNode* child = node->GetChild(i);
+      GtkWidget* item = gtk_image_menu_item_new();
+      ConfigureMenuItem(child, item);
+      bookmark_nodes_[child] = item;
+
+      if (child->is_folder()) {
+        GtkWidget* submenu = gtk_menu_new();
+        AddNodeToMenu(child, submenu);
+        gtk_menu_item_set_submenu(GTK_MENU_ITEM(item), submenu);
+      } else {
+        g_object_set_data(G_OBJECT(item), "bookmark-node",
+                          const_cast<BookmarkNode*>(child));
+        g_signal_connect(item, "activate",
+                         G_CALLBACK(OnBookmarkItemActivatedThunk), this);
+      }
+
+      AddBookmarkMenuItem(menu, item);
+    }
+  }
+}
+
+void GlobalBookmarkMenu::ConfigureMenuItem(const BookmarkNode* node,
+                                           GtkWidget* menu_item) {
+  string16 elided_name = l10n_util::TruncateString(node->GetTitle(), kMaxChars);
+  gtk_menu_item_set_label(GTK_MENU_ITEM(menu_item),
+                          UTF16ToUTF8(elided_name).c_str());
+
+  if (node->is_url()) {
+    std::string tooltip = gtk_util::BuildTooltipTitleFor(node->GetTitle(),
+                                                         node->GetURL());
+    gtk_widget_set_tooltip_markup(menu_item, tooltip.c_str());
+  }
+
+  const SkBitmap& bitmap = profile_->GetBookmarkModel()->GetFavicon(node);
+  if (!bitmap.isNull()) {
+    GdkPixbuf* pixbuf = gfx::GdkPixbufFromSkBitmap(&bitmap);
+    gtk_image_menu_item_set_image(GTK_IMAGE_MENU_ITEM(menu_item),
+                                  gtk_image_new_from_pixbuf(pixbuf));
+    g_object_unref(pixbuf);
+  } else {
+    gtk_image_menu_item_set_image(GTK_IMAGE_MENU_ITEM(menu_item),
+                                  gtk_image_new_from_pixbuf(
+                                      node->is_url() ? default_favicon_ :
+                                      default_folder_));
+  }
+}
+
+GtkWidget* GlobalBookmarkMenu::MenuItemForNode(const BookmarkNode* node) {
+  if (!node)
+    return NULL;
+  std::map<const BookmarkNode*, GtkWidget*>::iterator it =
+      bookmark_nodes_.find(node);
+  if (it == bookmark_nodes_.end())
+    return NULL;
+  return it->second;
+}
+
+void GlobalBookmarkMenu::ClearBookmarkMenu() {
+  bookmark_nodes_.clear();
+
+  gtk_container_foreach(GTK_CONTAINER(bookmark_menu_),
+                        &ClearBookmarkItemCallback,
+                        NULL);
+}
+
+// static
+void GlobalBookmarkMenu::ClearBookmarkItemCallback(GtkWidget* menu_item,
+                                                   void* unused) {
+  int tag = GPOINTER_TO_INT(g_object_get_data(G_OBJECT(menu_item), "type-tag"));
+  if (tag == GlobalMenuBar::TAG_BOOKMARK_CLEARABLE)
+    gtk_widget_destroy(menu_item);
+}
+
+void GlobalBookmarkMenu::Observe(NotificationType type,
+                                 const NotificationSource& source,
+                                 const NotificationDetails& details) {
+  DCHECK(type.value == NotificationType::BROWSER_THEME_CHANGED);
+
+  // Change the icon and invalidate the menu.
+  default_favicon_ = GtkThemeService::GetDefaultFavicon(true);
+  default_folder_ = GtkThemeService::GetFolderIcon(true);
+  RebuildMenuInFuture();
+}
+
+void GlobalBookmarkMenu::Loaded(BookmarkModel* model) {
+  // If we have a Loaded() event, then we need to build the menu immediately
+  // for the first time.
+  RebuildMenu();
+}
+
+void GlobalBookmarkMenu::BookmarkModelBeingDeleted(BookmarkModel* model) {
+  ClearBookmarkMenu();
+}
+
+void GlobalBookmarkMenu::BookmarkNodeMoved(BookmarkModel* model,
+                                           const BookmarkNode* old_parent,
+                                           int old_index,
+                                           const BookmarkNode* new_parent,
+                                           int new_index) {
+  RebuildMenuInFuture();
+}
+
+void GlobalBookmarkMenu::BookmarkNodeAdded(BookmarkModel* model,
+                                           const BookmarkNode* parent,
+                                           int index) {
+  RebuildMenuInFuture();
+}
+
+void GlobalBookmarkMenu::BookmarkNodeRemoved(BookmarkModel* model,
+                                             const BookmarkNode* parent,
+                                             int old_index,
+                                             const BookmarkNode* node) {
+  GtkWidget* item = MenuItemForNode(node);
+  if (item) {
+    gtk_widget_destroy(item);
+    bookmark_nodes_.erase(node);
+  }
+}
+
+void GlobalBookmarkMenu::BookmarkNodeChanged(BookmarkModel* model,
+                                             const BookmarkNode* node) {
+  GtkWidget* item = MenuItemForNode(node);
+  if (item)
+    ConfigureMenuItem(node, item);
+}
+
+void GlobalBookmarkMenu::BookmarkNodeFaviconLoaded(BookmarkModel* model,
+                                                   const BookmarkNode* node) {
+  GtkWidget* item = MenuItemForNode(node);
+  if (item)
+    ConfigureMenuItem(node, item);
+}
+
+void GlobalBookmarkMenu::BookmarkNodeChildrenReordered(
+    BookmarkModel* model,
+    const BookmarkNode* node) {
+  RebuildMenuInFuture();
+}
+
+void GlobalBookmarkMenu::OnBookmarkItemActivated(GtkWidget* menu_item) {
+  // The actual mouse event that generated this activated event was in a
+  // different process. Go with something default.
+  const BookmarkNode* node = static_cast<const BookmarkNode*>(
+      g_object_get_data(G_OBJECT(menu_item), "bookmark-node"));
+
+  browser_->OpenURL(node->GetURL(), GURL(), NEW_FOREGROUND_TAB,
+                    PageTransition::AUTO_BOOKMARK);
+}
+