First cut at implementation of FindBar for views / gtk...

views/widget/widget_gtk.cc

 // Copyright (c) 2009 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 "views/widget/widget_gtk.h"
 
 #include "app/drag_drop_types.h"
 #include "app/gfx/path.h"
 #include "app/os_exchange_data.h"
 #include "app/os_exchange_data_provider_gtk.h"
@@ skipping 277 matching lines @@
   tooltip_manager_.reset(new TooltipManagerGtk(this));
 
   // Register for tooltips.
   g_object_set(G_OBJECT(window_contents_), "has-tooltip", TRUE, NULL);
   g_signal_connect(G_OBJECT(window_contents_), "query_tooltip",
                    G_CALLBACK(CallQueryTooltip), this);
 
   if (type_ == TYPE_CHILD) {
     if (parent) {
       WidgetGtk* parent_widget = GetViewForNative(parent);
-      parent_widget->AddChild(widget_);
       parent_widget->PositionChild(widget_, bounds.x(), bounds.y(),
                                    bounds.width(), bounds.height());
     }
   } else {
     if (bounds.width() > 0 && bounds.height() > 0)
       gtk_window_resize(GTK_WINDOW(widget_), bounds.width(), bounds.height());
     gtk_window_move(GTK_WINDOW(widget_), bounds.x(), bounds.y());
   }
 }
 
@@ skipping 143 matching lines @@
 
 const Window* WidgetGtk::GetWindow() const {
   return GetWindowImpl(widget_);
 }
 
 ThemeProvider* WidgetGtk::GetThemeProvider() const {
   return default_theme_provider_.get();
 }
 
 FocusManager* WidgetGtk::GetFocusManager() {
-  return focus_manager_.get();
+  if (focus_manager_.get())
+    return focus_manager_.get();
+
+  Widget* root = GetRootWidget();
+  if (root && root != this) {
+    // Widget subclasses may override GetFocusManager(), for example for
+    // dealing with cases where the widget has been unparented.
+    return root->GetFocusManager();
+  }
+  return NULL;
 }
 
 void WidgetGtk::ViewHierarchyChanged(bool is_add, View *parent,
                                      View *child) {
   if (drop_target_.get())
     drop_target_->ResetTargetViewIfEquals(child);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // WidgetGtk, MessageLoopForUI::Observer implementation:
@@ skipping 628 matching lines @@
 
 // static
 Widget* Widget::CreateTransparentPopupWidget(bool delete_on_destroy) {
   WidgetGtk* popup = new WidgetGtk(WidgetGtk::TYPE_POPUP);
   popup->set_delete_on_destroy(delete_on_destroy);
   popup->MakeTransparent();
   return popup;
 }
 
 }  // namespace views