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