1
    2
    3
    4
    5
    6
    7
    8
    9
   10
   11
   12
   13
   14
   15
   16
   17
   18
   19
   20
   21
   22
   23
   24
   25
   26
   27
   28
   29
   30
   31
   32
   33
   34
   35
   36
   37
   38
   39
   40
   41
   42
   43
   44
   45
   46
   47
   48
   49
   50
   51
   52
   53
   54
   55
   56
   57
   58
   59


ash / shelf / shelf_locking_manager.cc [blame]

// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ash/shelf/shelf_locking_manager.h"

#include "ash/session/session_controller_impl.h"
#include "ash/shelf/shelf.h"
#include "ash/shell.h"
#include "ash/wm/lock_state_controller.h"

namespace ash {

ShelfLockingManager::ShelfLockingManager(Shelf* shelf)
    : shelf_(shelf), scoped_session_observer_(this) {
  DCHECK(shelf_);
  Shell::Get()->lock_state_controller()->AddObserver(this);
  SessionControllerImpl* controller = Shell::Get()->session_controller();
  session_locked_ =
      controller->GetSessionState() != session_manager::SessionState::ACTIVE;
  screen_locked_ = controller->IsScreenLocked();
}

ShelfLockingManager::~ShelfLockingManager() {
  // |this| is destroyed after LockStateController for the primary display.
  if (Shell::Get()->lock_state_controller())
    Shell::Get()->lock_state_controller()->RemoveObserver(this);
}

void ShelfLockingManager::OnLockStateChanged(bool locked) {
  screen_locked_ = locked;
  UpdateLockedState();
}

void ShelfLockingManager::OnSessionStateChanged(
    session_manager::SessionState state) {
  session_locked_ = state != session_manager::SessionState::ACTIVE;
  UpdateLockedState();
}

void ShelfLockingManager::OnLockStateEvent(EventType event) {
  // Lock when the animation starts, ignoring pre-lock. There's no unlock event.
  screen_locked_ |= event == EVENT_LOCK_ANIMATION_STARTED;
  UpdateLockedState();
}

void ShelfLockingManager::UpdateLockedState() {
  const ShelfAlignment alignment = shelf_->alignment();
  if (is_locked() && alignment != ShelfAlignment::kBottomLocked) {
    in_session_auto_hide_behavior_ = shelf_->auto_hide_behavior();
    in_session_alignment_ = alignment;
    shelf_->SetAlignment(ShelfAlignment::kBottomLocked);
  } else if (!is_locked() && alignment == ShelfAlignment::kBottomLocked) {
    in_session_auto_hide_behavior_ = ShelfAutoHideBehavior::kNever;
    shelf_->SetAlignment(in_session_alignment_);
  }
}

}  // namespace ash