ash/wm/status_area_layout_manager.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 "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
  14 namespace ash {
  15 namespace internal {
  16
  17 ////////////////////////////////////////////////////////////////////////////////
  18 // StatusAreaLayoutManager, public:
  19
  20 StatusAreaLayoutManager::StatusAreaLayoutManager(ShelfWidget* shelf)
  21     : in_layout_(false),
  22       shelf_(shelf) {
  23 }
  24
  25 StatusAreaLayoutManager::~StatusAreaLayoutManager() {
  26 }
  27
  28 ////////////////////////////////////////////////////////////////////////////////
  29 // StatusAreaLayoutManager, aura::LayoutManager implementation:
  30
  31 void StatusAreaLayoutManager::OnWindowResized() {
  32   LayoutStatusArea();
  33 }
  34
  35 void StatusAreaLayoutManager::OnWindowAddedToLayout(aura::Window* child) {
  36 }
  37
  38 void StatusAreaLayoutManager::OnWillRemoveWindowFromLayout(
  39     aura::Window* child) {
  40 }
  41
  42 void StatusAreaLayoutManager::OnWindowRemovedFromLayout(aura::Window* child) {
  43 }
  44
  45 void StatusAreaLayoutManager::OnChildWindowVisibilityChanged(
  46     aura::Window* child, bool visible) {
  47 }
  48
  49 void StatusAreaLayoutManager::SetChildBounds(
  50     aura::Window* child,
  51     const gfx::Rect& requested_bounds) {
  52   // Only need to have the shelf do a layout if the child changing is the status
  53   // area and the shelf isn't in the process of doing a layout.
  54   if (child != shelf_->status_area_widget()->GetNativeView() || in_layout_) {
  55     SetChildBoundsDirect(child, requested_bounds);
  56     return;
  57   }
  58
  59   // If the size matches, no need to do anything. We don't check the location as
  60   // that is managed by the shelf.
  61   if (requested_bounds == child->bounds())
  62     return;
  63
  64   SetChildBoundsDirect(child, requested_bounds);
  65   LayoutStatusArea();
  66 }
  67
  68 ////////////////////////////////////////////////////////////////////////////////
  69 // StatusAreaLayoutManager, private:
  70
  71 void StatusAreaLayoutManager::LayoutStatusArea() {
  72   // Shelf layout manager may be already doing layout.
  73   if (shelf_->shelf_layout_manager()->updating_bounds())
  74     return;
  75
  76   base::AutoReset<bool> auto_reset_in_layout(&in_layout_, true);
  77   shelf_->shelf_layout_manager()->LayoutShelf();
  78 }
  79
  80 }  // namespace internal
  81 }  // namespace ash