ash/wm/lock_layout_manager.cc

   1 // Copyright 2014 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/lock_layout_manager.h"
   6
   7 #include "ash/shell.h"
   8 #include "ash/shell_delegate.h"
   9 #include "ash/wm/lock_window_state.h"
  10 #include "ash/wm/window_state.h"
  11 #include "ash/wm/wm_event.h"
  12 #include "ui/aura/window.h"
  13 #include "ui/aura/window_observer.h"
  14 #include "ui/events/event.h"
  15 #include "ui/keyboard/keyboard_controller.h"
  16 #include "ui/keyboard/keyboard_util.h"
  17
  18 namespace ash {
  19
  20 LockLayoutManager::LockLayoutManager(aura::Window* window)
  21     : SnapToPixelLayoutManager(window),
  22       window_(window),
  23       root_window_(window->GetRootWindow()),
  24       is_observing_keyboard_(false) {
  25   Shell::GetInstance()->delegate()->AddVirtualKeyboardStateObserver(this);
  26   root_window_->AddObserver(this);
  27   if (keyboard::KeyboardController::GetInstance()) {
  28     keyboard::KeyboardController::GetInstance()->AddObserver(this);
  29     is_observing_keyboard_ = true;
  30   }
  31 }
  32
  33 LockLayoutManager::~LockLayoutManager() {
  34   if (root_window_)
  35     root_window_->RemoveObserver(this);
  36
  37   for (aura::Window::Windows::const_iterator it = window_->children().begin();
  38        it != window_->children().end(); ++it) {
  39     (*it)->RemoveObserver(this);
  40   }
  41
  42   Shell::GetInstance()->delegate()->RemoveVirtualKeyboardStateObserver(this);
  43
  44   if (keyboard::KeyboardController::GetInstance() && is_observing_keyboard_) {
  45     keyboard::KeyboardController::GetInstance()->RemoveObserver(this);
  46     is_observing_keyboard_ = false;
  47   }
  48 }
  49
  50 void LockLayoutManager::OnWindowResized() {
  51   const wm::WMEvent event(wm::WM_EVENT_WORKAREA_BOUNDS_CHANGED);
  52   AdjustWindowsForWorkAreaChange(&event);
  53 }
  54
  55 void LockLayoutManager::OnWindowAddedToLayout(aura::Window* child) {
  56   child->AddObserver(this);
  57
  58   // LockWindowState replaces default WindowState of a child.
  59   wm::WindowState* window_state = LockWindowState::SetLockWindowState(child);
  60   wm::WMEvent event(wm::WM_EVENT_ADDED_TO_WORKSPACE);
  61   window_state->OnWMEvent(&event);
  62 }
  63
  64 void LockLayoutManager::OnWillRemoveWindowFromLayout(aura::Window* child) {
  65   child->RemoveObserver(this);
  66 }
  67
  68 void LockLayoutManager::OnWindowRemovedFromLayout(aura::Window* child) {
  69 }
  70
  71 void LockLayoutManager::OnChildWindowVisibilityChanged(aura::Window* child,
  72                                                        bool visible) {
  73 }
  74
  75 void LockLayoutManager::SetChildBounds(aura::Window* child,
  76                                        const gfx::Rect& requested_bounds) {
  77   wm::WindowState* window_state = wm::GetWindowState(child);
  78   wm::SetBoundsEvent event(wm::WM_EVENT_SET_BOUNDS, requested_bounds);
  79   window_state->OnWMEvent(&event);
  80 }
  81
  82 void LockLayoutManager::OnWindowHierarchyChanged(
  83     const WindowObserver::HierarchyChangeParams& params) {
  84 }
  85
  86 void LockLayoutManager::OnWindowPropertyChanged(aura::Window* window,
  87                                                 const void* key,
  88                                                 intptr_t old) {
  89 }
  90
  91 void LockLayoutManager::OnWindowStackingChanged(aura::Window* window) {
  92 }
  93
  94 void LockLayoutManager::OnWindowDestroying(aura::Window* window) {
  95   window->RemoveObserver(this);
  96   if (root_window_ == window)
  97     root_window_ = NULL;
  98 }
  99
 100 void LockLayoutManager::OnWindowBoundsChanged(aura::Window* window,
 101                                               const gfx::Rect& old_bounds,
 102                                               const gfx::Rect& new_bounds) {
 103   if (root_window_ == window) {
 104     const wm::WMEvent wm_event(wm::WM_EVENT_DISPLAY_BOUNDS_CHANGED);
 105     AdjustWindowsForWorkAreaChange(&wm_event);
 106   }
 107 }
 108
 109 void LockLayoutManager::OnVirtualKeyboardStateChanged(bool activated) {
 110   if (keyboard::KeyboardController::GetInstance()) {
 111     if (activated) {
 112       if (!is_observing_keyboard_) {
 113         keyboard::KeyboardController::GetInstance()->AddObserver(this);
 114         is_observing_keyboard_ = true;
 115       }
 116     } else {
 117       keyboard::KeyboardController::GetInstance()->RemoveObserver(this);
 118       is_observing_keyboard_ = false;
 119     }
 120   }
 121 }
 122
 123 void LockLayoutManager::OnKeyboardBoundsChanging(const gfx::Rect& new_bounds) {
 124   keyboard_bounds_ = new_bounds;
 125   OnWindowResized();
 126 }
 127
 128 void LockLayoutManager::AdjustWindowsForWorkAreaChange(
 129     const wm::WMEvent* event) {
 130   DCHECK(event->type() == wm::WM_EVENT_DISPLAY_BOUNDS_CHANGED ||
 131          event->type() == wm::WM_EVENT_WORKAREA_BOUNDS_CHANGED);
 132
 133   for (aura::Window::Windows::const_iterator it = window_->children().begin();
 134        it != window_->children().end();
 135        ++it) {
 136     wm::GetWindowState(*it)->OnWMEvent(event);
 137   }
 138 }
 139
 140 }  // namespace ash