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 "ash/wm/status_area_layout_manager.h"
6
7#include "ash/shelf/shelf_layout_manager.h"
8#include "ash/shelf/shelf_widget.h"
9#include "ash/system/status_area_widget.h"
10#include "base/auto_reset.h"
11#include "ui/aura/window.h"
12#include "ui/views/widget/widget.h"
13
14namespace ash {
15
16////////////////////////////////////////////////////////////////////////////////
17// StatusAreaLayoutManager, public:
18
19StatusAreaLayoutManager::StatusAreaLayoutManager(aura::Window* container,
20                                                 ShelfWidget* shelf)
21    : SnapToPixelLayoutManager(container), in_layout_(false), shelf_(shelf) {
22}
23
24StatusAreaLayoutManager::~StatusAreaLayoutManager() {
25}
26
27////////////////////////////////////////////////////////////////////////////////
28// StatusAreaLayoutManager, aura::LayoutManager implementation:
29
30void StatusAreaLayoutManager::OnWindowResized() {
31  LayoutStatusArea();
32}
33
34void StatusAreaLayoutManager::SetChildBounds(
35    aura::Window* child,
36    const gfx::Rect& requested_bounds) {
37  // Only need to have the shelf do a layout if the child changing is the status
38  // area and the shelf isn't in the process of doing a layout.
39  if (child != shelf_->status_area_widget()->GetNativeView() || in_layout_) {
40    SnapToPixelLayoutManager::SetChildBounds(child, requested_bounds);
41    return;
42  }
43
44  // If the bounds match, no need to do anything. Check for target bounds to
45  // ensure any active animation is retargeted.
46  if (requested_bounds == child->GetTargetBounds())
47    return;
48
49  SnapToPixelLayoutManager::SetChildBounds(child, requested_bounds);
50  LayoutStatusArea();
51}
52
53////////////////////////////////////////////////////////////////////////////////
54// StatusAreaLayoutManager, private:
55
56void StatusAreaLayoutManager::LayoutStatusArea() {
57  // Shelf layout manager may be already doing layout.
58  if (shelf_->shelf_layout_manager()->updating_bounds())
59    return;
60
61  base::AutoReset<bool> auto_reset_in_layout(&in_layout_, true);
62  shelf_->shelf_layout_manager()->LayoutShelf();
63}
64
65}  // namespace ash
66