Cancel drag upon screen lock

chrome/browser/chromeos/login/webui_screen_locker.cc

 // Copyright (c) 2012 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/chromeos/login/webui_screen_locker.h"
 
 #include "ash/shell.h"
 #include "ash/wm/session_state_controller.h"
 #include "ash/wm/session_state_observer.h"
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/chromeos/accessibility/accessibility_util.h"
 #include "chrome/browser/chromeos/login/helper.h"
 #include "chrome/browser/chromeos/login/screen_locker.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
 #include "chrome/browser/chromeos/login/webui_login_display.h"
 #include "chrome/browser/ui/webui/chromeos/login/oobe_ui.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/url_constants.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/render_widget_host_view.h"
 #include "content/public/browser/web_ui.h"
+#include "ui/aura/client/capture_client.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/x/x11_util.h"
 #include "ui/gfx/screen.h"
 #include "ui/views/controls/webview/webview.h"
 
 namespace {
 
 // URL which corresponds to the login WebUI.
 const char kLoginURL[] = "chrome://oobe/login";
 
@@ skipping 230 matching lines @@
   lock_ready_ = true;
   if (webui_ready_)
     ScreenLockReady();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // SessionStateObserver override.
 
 void WebUIScreenLocker::OnSessionStateEvent(
     ash::SessionStateObserver::EventType event) {
-  if (event == ash::SessionStateObserver::EVENT_LOCK_ANIMATION_FINISHED)
+  if (event == ash::SessionStateObserver::EVENT_LOCK_ANIMATION_FINISHED) {
+    // Release capture if any.
+    aura::client::GetCaptureClient(GetNativeWindow()->GetRootWindow())->
+        SetCapture(NULL);
     GetWebUI()->CallJavascriptFunction("cr.ui.Oobe.animateOnceFullyDisplayed");
+  }
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // WidgetObserver override.
 
 void WebUIScreenLocker::OnWidgetDestroying(views::Widget* widget) {
   lock_window_->RemoveObserver(this);
   lock_window_ = NULL;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // PowerManagerClient::Observer overrides.
 
 void WebUIScreenLocker::LidEventReceived(bool open,
                                          const base::TimeTicks& time) {
   content::BrowserThread::PostTask(
       content::BrowserThread::UI,
       FROM_HERE,
       base::Bind(&WebUIScreenLocker::FocusUserPod, weak_factory_.GetWeakPtr()));
 }
 
 void WebUIScreenLocker::SystemResumed(const base::TimeDelta& sleep_duration) {
   content::BrowserThread::PostTask(
       content::BrowserThread::UI,
       FROM_HERE,
       base::Bind(&WebUIScreenLocker::FocusUserPod, weak_factory_.GetWeakPtr()));
 }
 
 }  // namespace chromeos