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      1 /*
      2  * Copyright (C) 2013 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "config.h"
     32 #include "modules/notifications/NotificationBase.h"
     33 
     34 #include "core/dom/Document.h"
     35 #include "core/page/WindowFocusAllowedIndicator.h"
     36 #include "modules/notifications/NotificationController.h"
     37 
     38 namespace WebCore {
     39 
     40 NotificationBase::NotificationBase(const String& title, ExecutionContext* context, NotificationClient* client)
     41     : ActiveDOMObject(context)
     42     , m_title(title)
     43     , m_dir("auto")
     44     , m_state(Idle)
     45     , m_client(client)
     46 {
     47     ASSERT(m_client);
     48 }
     49 
     50 NotificationBase::~NotificationBase()
     51 {
     52 }
     53 
     54 void NotificationBase::show()
     55 {
     56     // prevent double-showing
     57     if (m_state == Idle) {
     58         if (!toDocument(executionContext())->page())
     59             return;
     60         if (NotificationController::from(toDocument(executionContext())->page())->client()->checkPermission(executionContext()) != NotificationClient::PermissionAllowed) {
     61             dispatchErrorEvent();
     62             return;
     63         }
     64         if (m_client->show(this)) {
     65             m_state = Showing;
     66         }
     67     }
     68 }
     69 
     70 void NotificationBase::close()
     71 {
     72     switch (m_state) {
     73     case Idle:
     74         break;
     75     case Showing:
     76         m_client->cancel(this);
     77         break;
     78     case Closed:
     79         break;
     80     }
     81 }
     82 
     83 void NotificationBase::dispatchShowEvent()
     84 {
     85     dispatchEvent(Event::create(EventTypeNames::show));
     86 }
     87 
     88 void NotificationBase::dispatchClickEvent()
     89 {
     90     UserGestureIndicator gestureIndicator(DefinitelyProcessingNewUserGesture);
     91     WindowFocusAllowedIndicator windowFocusAllowed;
     92     dispatchEvent(Event::create(EventTypeNames::click));
     93 }
     94 
     95 void NotificationBase::dispatchErrorEvent()
     96 {
     97     dispatchEvent(Event::create(EventTypeNames::error));
     98 }
     99 
    100 void NotificationBase::dispatchCloseEvent()
    101 {
    102     dispatchEvent(Event::create(EventTypeNames::close));
    103     m_state = Closed;
    104 }
    105 
    106 TextDirection NotificationBase::direction() const
    107 {
    108     // FIXME: Resolve dir()=="auto" against the document.
    109     return dir() == "rtl" ? RTL : LTR;
    110 }
    111 
    112 const String& NotificationBase::permissionString(NotificationClient::Permission permission)
    113 {
    114     DEFINE_STATIC_LOCAL(const String, allowedPermission, ("granted"));
    115     DEFINE_STATIC_LOCAL(const String, deniedPermission, ("denied"));
    116     DEFINE_STATIC_LOCAL(const String, defaultPermission, ("default"));
    117 
    118     switch (permission) {
    119     case NotificationClient::PermissionAllowed:
    120         return allowedPermission;
    121     case NotificationClient::PermissionDenied:
    122         return deniedPermission;
    123     case NotificationClient::PermissionNotAllowed:
    124         return defaultPermission;
    125     }
    126 
    127     ASSERT_NOT_REACHED();
    128     return deniedPermission;
    129 }
    130 
    131 bool NotificationBase::dispatchEvent(PassRefPtr<Event> event)
    132 {
    133     // Do not dispatch if the context is gone.
    134     if (!executionContext())
    135         return false;
    136 
    137     return EventTarget::dispatchEvent(event);
    138 }
    139 
    140 void NotificationBase::stop()
    141 {
    142     if (m_client)
    143         m_client->notificationObjectDestroyed(this);
    144 
    145     m_client = 0;
    146     m_state = Closed;
    147 }
    148 
    149 bool NotificationBase::hasPendingActivity() const
    150 {
    151     return m_state == Showing;
    152 }
    153 
    154 } // namespace WebCore
    155