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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 "Document.h"
     38 #include "DOMWindow.h"
     39 #include "EventNames.h"
     40 #include "Frame.h"
     41 #include "InspectorFrontend.h"
     42 #include "ScriptObject.h"
     43 #include "Storage.h"
     44 #include "StorageEvent.h"
     45 
     46 using namespace JSC;
     47 
     48 namespace WebCore {
     49 
     50 int InspectorDOMStorageResource::s_nextUnusedId = 1;
     51 
     52 InspectorDOMStorageResource::InspectorDOMStorageResource(Storage* domStorage, bool isLocalStorage, Frame* frame)
     53     :  EventListener(InspectorDOMStorageResourceType)
     54     , m_domStorage(domStorage)
     55     , m_isLocalStorage(isLocalStorage)
     56     , m_frame(frame)
     57     , m_frontend(0)
     58     , m_id(s_nextUnusedId++)
     59     , m_reportingChangesToFrontend(false)
     60 {
     61 }
     62 
     63 bool InspectorDOMStorageResource::isSameHostAndType(Frame* frame, bool isLocalStorage) const
     64 {
     65     return equalIgnoringCase(m_frame->document()->securityOrigin()->host(), frame->document()->securityOrigin()->host()) && m_isLocalStorage == isLocalStorage;
     66 }
     67 
     68 void InspectorDOMStorageResource::bind(InspectorFrontend* frontend)
     69 {
     70     ASSERT(!m_frontend);
     71     m_frontend = frontend;
     72 
     73     ScriptObject jsonObject = frontend->newScriptObject();
     74     jsonObject.set("host", m_frame->document()->securityOrigin()->host());
     75     jsonObject.set("isLocalStorage", m_isLocalStorage);
     76     jsonObject.set("id", m_id);
     77     frontend->addDOMStorage(jsonObject);
     78 }
     79 
     80 void InspectorDOMStorageResource::unbind()
     81 {
     82     if (!m_frontend)
     83         return;  // Already unbound.
     84 
     85     if (m_reportingChangesToFrontend) {
     86         m_frame->domWindow()->removeEventListener(eventNames().storageEvent, this, true);
     87         m_reportingChangesToFrontend = false;
     88     }
     89     m_frontend = 0;
     90 }
     91 
     92 void InspectorDOMStorageResource::startReportingChangesToFrontend()
     93 {
     94     ASSERT(m_frontend);
     95     if (!m_reportingChangesToFrontend) {
     96         m_frame->domWindow()->addEventListener(eventNames().storageEvent, this, true);
     97         m_reportingChangesToFrontend = true;
     98     }
     99 }
    100 
    101 void InspectorDOMStorageResource::handleEvent(ScriptExecutionContext*, Event* event)
    102 {
    103     ASSERT(m_frontend);
    104     ASSERT(eventNames().storageEvent == event->type());
    105     StorageEvent* storageEvent = static_cast<StorageEvent*>(event);
    106     Storage* storage = storageEvent->storageArea();
    107     bool isLocalStorage = storage->frame()->domWindow()->localStorage() == storage;
    108     if (isSameHostAndType(storage->frame(), isLocalStorage))
    109         m_frontend->updateDOMStorage(m_id);
    110 }
    111 
    112 bool InspectorDOMStorageResource::operator==(const EventListener& listener)
    113 {
    114     return (this == InspectorDOMStorageResource::cast(&listener));
    115 }
    116 
    117 } // namespace WebCore
    118 
    119 #endif // ENABLE(DOM_STORAGE) && ENABLE(INSPECTOR)
    120 
    121