chrome/browser/ui/ash/launcher/app_window_launcher_controller.cc

// 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 "chrome/browser/ui/ash/launcher/app_window_launcher_controller.h"

#include "ash/shell.h"
#include "chrome/browser/ui/ash/launcher/app_window_launcher_item_controller.h"
#include "chrome/browser/ui/ash/launcher/chrome_launcher_controller.h"
#include "ui/wm/public/activation_client.h"

AppWindowLauncherController::AppWindowLauncherController(
    ChromeLauncherController* owner)
    : owner_(owner) {
  if (ash::Shell::HasInstance()) {
    if (ash::Shell::GetInstance()->GetPrimaryRootWindow()) {
      activation_client_ = aura::client::GetActivationClient(
          ash::Shell::GetInstance()->GetPrimaryRootWindow());
      if (activation_client_)
        activation_client_->AddObserver(this);
    }
  }
}

AppWindowLauncherController::~AppWindowLauncherController() {
  if (activation_client_)
    activation_client_->RemoveObserver(this);
}

void AppWindowLauncherController::OnWindowActivated(
    aura::client::ActivationChangeObserver::ActivationReason reason,
    aura::Window* new_active,
    aura::Window* old_active) {
  // Make the newly active window the active (first) entry in the controller.
  AppWindowLauncherItemController* new_controller =
      ControllerForWindow(new_active);
  if (new_controller) {
    new_controller->SetActiveWindow(new_active);
    owner_->SetItemStatus(new_controller->shelf_id(), ash::STATUS_ACTIVE);
  }

  // Mark the old active window's launcher item as running (if different).
  AppWindowLauncherItemController* old_controller =
      ControllerForWindow(old_active);
  if (old_controller && old_controller != new_controller)
    owner_->SetItemStatus(old_controller->shelf_id(), ash::STATUS_RUNNING);
}