Add LockLayoutManager responsible for lock container (login/lock).

ash/wm/lock_window_state.cc

Index: ash/wm/lock_window_state.cc
diff --git a/ash/wm/lock_window_state.cc b/ash/wm/lock_window_state.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e065830d44108976c894af43e78fa563134e130b
--- /dev/null
+++ b/ash/wm/lock_window_state.cc
@@ -0,0 +1,182 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ash/wm/lock_window_state.h"
+
+#include "ash/screen_util.h"
+#include "ash/shell.h"
+#include "ash/wm/lock_layout_manager.h"
+#include "ash/wm/window_animations.h"
+#include "ash/wm/window_state.h"
+#include "ash/wm/window_state_delegate.h"
+#include "ash/wm/window_state_util.h"
+#include "ash/wm/window_util.h"
+#include "ash/wm/wm_event.h"
+#include "ui/aura/window.h"
+#include "ui/aura/window_delegate.h"
+#include "ui/gfx/rect.h"
+#include "ui/keyboard/keyboard_controller.h"
+#include "ui/wm/core/window_animations.h"
+
+namespace ash {
+
+namespace {
+}  // namespace
+
+LockWindowState::LockWindowState(
+    aura::Window* window, LockLayoutManager* creator)
+    : window_(window),
+      creator_(creator),
+      current_state_type_(wm::GetWindowState(window)->GetStateType()) {
+  old_state_.reset(
+      wm::GetWindowState(window)->SetStateObject(
+          scoped_ptr<State>(this).Pass()).release());
+}
+
+LockWindowState::~LockWindowState() {
+  creator_->WindowStateDestroyed(window_);
+}
+
+void LockWindowState::RestoreWindowState(wm::WindowState* window_state) {
+  // Note: When we return we will destroy ourselves with the |our_reference|.
+  scoped_ptr<wm::WindowState::State> our_reference =
+      window_state->SetStateObject(old_state_.Pass());
+}
+
+void LockWindowState::OnWMEvent(wm::WindowState* window_state,
+                                const wm::WMEvent* event) {
+  aura::Window* window = window_state->window();
+  gfx::Rect bounds = window->bounds();
+
+  switch (event->type()) {
+    case wm::WM_EVENT_TOGGLE_FULLSCREEN:
+      ToggleFullScreen(window_state, window_state->delegate());
+      break;
+    case wm::WM_EVENT_FULLSCREEN:
+      UpdateWindow(window_state, wm::WINDOW_STATE_TYPE_FULLSCREEN);
+      break;
+    case wm::WM_EVENT_TOGGLE_MAXIMIZE_CAPTION:
+    case wm::WM_EVENT_TOGGLE_VERTICAL_MAXIMIZE:
+    case wm::WM_EVENT_TOGGLE_HORIZONTAL_MAXIMIZE:
+    case wm::WM_EVENT_TOGGLE_MAXIMIZE:
+    case wm::WM_EVENT_CENTER:
+    case wm::WM_EVENT_SNAP_LEFT:
+    case wm::WM_EVENT_SNAP_RIGHT:
+    case wm::WM_EVENT_NORMAL:
+    case wm::WM_EVENT_MAXIMIZE:
+      UpdateWindow(window_state,
+                   GetMaximizedOrCenteredWindowType(window_state));
+      return;
+    case wm::WM_EVENT_MINIMIZE:
+      UpdateWindow(window_state, wm::WINDOW_STATE_TYPE_MINIMIZED);
+      return;
+    case wm::WM_EVENT_SHOW_INACTIVE:
+      return;
+    case wm::WM_EVENT_SET_BOUNDS:
+      UpdateBounds(window_state);
+      break;
+    case wm::WM_EVENT_ADDED_TO_WORKSPACE:
+      if (current_state_type_ != wm::WINDOW_STATE_TYPE_MAXIMIZED &&
+          current_state_type_ != wm::WINDOW_STATE_TYPE_MINIMIZED &&
+          current_state_type_ != wm::WINDOW_STATE_TYPE_FULLSCREEN) {
+        UpdateWindow(window_state,
+                     GetMaximizedOrCenteredWindowType(window_state));
+      }
+      break;
+    case wm::WM_EVENT_WORKAREA_BOUNDS_CHANGED:
+    case wm::WM_EVENT_DISPLAY_BOUNDS_CHANGED:
+      UpdateBounds(window_state);
+      break;
+  }
+}
+
+wm::WindowStateType LockWindowState::GetType() const {
+  return current_state_type_;
+}
+
+void LockWindowState::AttachState(wm::WindowState* window_state,
+                                  wm::WindowState::State* previous_state) {
+  current_state_type_ = previous_state->GetType();
+
+  // Initialize the state to a good preset.
+  if (current_state_type_ != wm::WINDOW_STATE_TYPE_MAXIMIZED &&
+      current_state_type_ != wm::WINDOW_STATE_TYPE_MINIMIZED &&
+      current_state_type_ != wm::WINDOW_STATE_TYPE_FULLSCREEN) {
+    UpdateWindow(window_state,
+                 GetMaximizedOrCenteredWindowType(window_state));
+  }
+  window_state->set_can_be_dragged(false);
+}
+
+void LockWindowState::DetachState(wm::WindowState* window_state) {
+  window_state->set_can_be_dragged(true);
+}
+
+void LockWindowState::UpdateWindow(wm::WindowState* window_state,
+                                   wm::WindowStateType target_state) {
+  DCHECK(target_state == wm::WINDOW_STATE_TYPE_MINIMIZED ||
+         target_state == wm::WINDOW_STATE_TYPE_MAXIMIZED ||
+         (target_state == wm::WINDOW_STATE_TYPE_NORMAL &&
+              !window_state->CanMaximize()) ||
+         target_state == wm::WINDOW_STATE_TYPE_FULLSCREEN);
+
+  if (target_state == wm::WINDOW_STATE_TYPE_MINIMIZED) {
+    if (current_state_type_ == wm::WINDOW_STATE_TYPE_MINIMIZED)
+      return;
+
+    current_state_type_ = target_state;
+    ::wm::SetWindowVisibilityAnimationType(
+        window_state->window(), WINDOW_VISIBILITY_ANIMATION_TYPE_MINIMIZE);
+    window_state->window()->Hide();
+    if (window_state->IsActive())
+      window_state->Deactivate();
+    return;
+  }
+
+  if (current_state_type_ == target_state) {
+    // If the state type did not change, update it accordingly.
+    UpdateBounds(window_state);
+    return;
+  }
+
+  const wm::WindowStateType old_state_type = current_state_type_;
+  current_state_type_ = target_state;
+  window_state->UpdateWindowShowStateFromStateType();
+  window_state->NotifyPreStateTypeChange(old_state_type);
+  UpdateBounds(window_state);
+  window_state->NotifyPostStateTypeChange(old_state_type);
+
+  if ((window_state->window()->TargetVisibility() ||
+      old_state_type == wm::WINDOW_STATE_TYPE_MINIMIZED) &&
+      !window_state->window()->layer()->visible()) {
+    // The layer may be hidden if the window was previously minimized. Make
+    // sure it's visible.
+    window_state->window()->Show();
+  }
+}
+
+wm::WindowStateType LockWindowState::GetMaximizedOrCenteredWindowType(
+      wm::WindowState* window_state) {
+  return window_state->CanMaximize() ? wm::WINDOW_STATE_TYPE_MAXIMIZED :
+                                       wm::WINDOW_STATE_TYPE_NORMAL;
+}
+
+void LockWindowState::UpdateBounds(wm::WindowState* window_state) {
+  keyboard::KeyboardController* keyboard_controller =
+      keyboard::KeyboardController::GetInstance();
+  gfx::Rect keyboard_bounds;
+  if (keyboard_controller)
+    keyboard_bounds = keyboard_controller->current_keyboard_bounds();
+
+  // TODO(nkostylev): Currently (M36/M37) virtual keyboard overscroll is
+  // disabled for login/lock screen. Add support for keyboard overscroll i.e.
+  // don't take keyboard bounds into consideration. This requires additional
+  // plumbing and will be done shortly after in M37.
+  gfx::Rect bounds =
+      ScreenUtil::GetDisplayBoundsInParent(window_state->window());
+  bounds.set_height(bounds.height() - keyboard_bounds.height());
+  window_state->SetBoundsDirect(bounds);
+}
+
+}  // namespace ash