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      1 /*
      2  * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
      3  * Copyright (C) 2008 Matt Lilek <webkit (at) mattlilek.com>
      4  * Copyright (C) 2009 Google Inc. All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  *
     10  * 1.  Redistributions of source code must retain the above copyright
     11  *     notice, this list of conditions and the following disclaimer.
     12  * 2.  Redistributions in binary form must reproduce the above copyright
     13  *     notice, this list of conditions and the following disclaimer in the
     14  *     documentation and/or other materials provided with the distribution.
     15  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     16  *     its contributors may be used to endorse or promote products derived
     17  *     from this software without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     20  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     21  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     22  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     23  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     24  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     26  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "config.h"
     32 
     33 #if ENABLE(DOM_STORAGE) && ENABLE(INSPECTOR)
     34 
     35 #include "InspectorDOMStorageResource.h"
     36 
     37 #include "DOMWindow.h"
     38 #include "EventNames.h"
     39 #include "Frame.h"
     40 #include "InspectorFrontend.h"
     41 #include "InspectorValues.h"
     42 #include "Storage.h"
     43 #include "StorageEvent.h"
     44 
     45 using namespace JSC;
     46 
     47 namespace WebCore {
     48 
     49 int InspectorDOMStorageResource::s_nextUnusedId = 1;
     50 
     51 InspectorDOMStorageResource::InspectorDOMStorageResource(Storage* domStorage, bool isLocalStorage, Frame* frame)
     52     :  EventListener(InspectorDOMStorageResourceType)
     53     , m_domStorage(domStorage)
     54     , m_isLocalStorage(isLocalStorage)
     55     , m_frame(frame)
     56     , m_frontend(0)
     57     , m_id(s_nextUnusedId++)
     58     , m_reportingChangesToFrontend(false)
     59 {
     60 }
     61 
     62 bool InspectorDOMStorageResource::isSameHostAndType(Frame* frame, bool isLocalStorage) const
     63 {
     64     return equalIgnoringCase(m_frame->document()->securityOrigin()->host(), frame->document()->securityOrigin()->host()) && m_isLocalStorage == isLocalStorage;
     65 }
     66 
     67 void InspectorDOMStorageResource::bind(InspectorFrontend* frontend)
     68 {
     69     ASSERT(!m_frontend);
     70     m_frontend = frontend->domstorage();
     71 
     72     RefPtr<InspectorObject> jsonObject = InspectorObject::create();
     73     jsonObject->setString("host", m_frame->document()->securityOrigin()->host());
     74     jsonObject->setBoolean("isLocalStorage", m_isLocalStorage);
     75     jsonObject->setNumber("id", m_id);
     76     m_frontend->addDOMStorage(jsonObject);
     77 }
     78 
     79 void InspectorDOMStorageResource::unbind()
     80 {
     81     if (!m_frontend)
     82         return;  // Already unbound.
     83 
     84     if (m_reportingChangesToFrontend) {
     85         m_frame->domWindow()->removeEventListener(eventNames().storageEvent, this, true);
     86         m_reportingChangesToFrontend = false;
     87     }
     88     m_frontend = 0;
     89 }
     90 
     91 void InspectorDOMStorageResource::startReportingChangesToFrontend()
     92 {
     93     ASSERT(m_frontend);
     94     if (!m_reportingChangesToFrontend) {
     95         m_frame->domWindow()->addEventListener(eventNames().storageEvent, this, true);
     96         m_reportingChangesToFrontend = true;
     97     }
     98 }
     99 
    100 void InspectorDOMStorageResource::handleEvent(ScriptExecutionContext*, Event* event)
    101 {
    102     ASSERT(m_frontend);
    103     if (event->type() != eventNames().storageEvent || !event->isStorageEvent())
    104         return;
    105 
    106     StorageEvent* storageEvent = static_cast<StorageEvent*>(event);
    107     Storage* storage = storageEvent->storageArea();
    108     ExceptionCode ec = 0;
    109     bool isLocalStorage = (storage->frame()->domWindow()->localStorage(ec) == storage && !ec);
    110     if (isSameHostAndType(storage->frame(), isLocalStorage))
    111         m_frontend->updateDOMStorage(m_id);
    112 }
    113 
    114 bool InspectorDOMStorageResource::operator==(const EventListener& listener)
    115 {
    116     return (this == InspectorDOMStorageResource::cast(&listener));
    117 }
    118 
    119 } // namespace WebCore
    120 
    121 #endif // ENABLE(DOM_STORAGE) && ENABLE(INSPECTOR)
    122 
    123