15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2011 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/views/focus/external_focus_tracker.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/views/focus/view_storage.h" 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/views/view.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace views { 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ExternalFocusTracker::ExternalFocusTracker(View* parent_view, 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FocusManager* focus_manager) 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : focus_manager_(focus_manager), 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) parent_view_(parent_view) { 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(parent_view); 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) view_storage_ = ViewStorage::GetInstance(); 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) last_focused_view_storage_id_ = view_storage_->CreateStorageID(); 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Store the view which is focused when we're created. 217d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) if (focus_manager_) 227d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) StartTracking(); 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ExternalFocusTracker::~ExternalFocusTracker() { 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) view_storage_->RemoveView(last_focused_view_storage_id_); 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (focus_manager_) 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) focus_manager_->RemoveFocusChangeListener(this); 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ExternalFocusTracker::OnWillChangeFocus(View* focused_before, 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) View* focused_now) { 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (focused_now && !parent_view_->Contains(focused_now) && 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) parent_view_ != focused_now) { 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Store the newly focused view. 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) StoreLastFocusedView(focused_now); 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ExternalFocusTracker::OnDidChangeFocus(View* focused_before, 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) View* focused_now) { 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ExternalFocusTracker::FocusLastFocusedExternalView() { 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) View* last_focused_view = 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) view_storage_->RetrieveView(last_focused_view_storage_id_); 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (last_focused_view) 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) last_focused_view->RequestFocus(); 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ExternalFocusTracker::SetFocusManager(FocusManager* focus_manager) { 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (focus_manager_) 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) focus_manager_->RemoveFocusChangeListener(this); 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) focus_manager_ = focus_manager; 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (focus_manager_) 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) StartTracking(); 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ExternalFocusTracker::StoreLastFocusedView(View* view) { 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) view_storage_->RemoveView(last_focused_view_storage_id_); 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // If the view is NULL, remove the last focused view from storage, but don't 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // try to store NULL. 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (view != NULL) 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) view_storage_->StoreView(last_focused_view_storage_id_, view); 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ExternalFocusTracker::StartTracking() { 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) StoreLastFocusedView(focus_manager_->GetFocusedView()); 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) focus_manager_->AddFocusChangeListener(this); 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace views 73