Source/WebCore/storage/StorageEventDispatcher.cpp

/*
 * Copyright (C) 2008 Apple Inc. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "config.h"
#include "StorageEventDispatcher.h"

#include "Document.h"
#include "DOMWindow.h"
#include "EventNames.h"
#include "InspectorInstrumentation.h"
#include "MainFrame.h"
#include "Page.h"
#include "PageGroup.h"
#include "SecurityOrigin.h"
#include "StorageEvent.h"

namespace WebCore {

void StorageEventDispatcher::dispatchSessionStorageEvents(const String& key, const String& oldValue, const String& newValue, SecurityOrigin* securityOrigin, Frame* sourceFrame)
{
    Page* page = sourceFrame->page();
    if (!page)
        return;

    Vector<RefPtr<Frame>> frames;

    // Send events only to our page.
    for (Frame* frame = &page->mainFrame(); frame; frame = frame->tree().traverseNext()) {
        if (sourceFrame != frame && frame->document()->securityOrigin()->equal(securityOrigin))
            frames.append(frame);
    }

    dispatchSessionStorageEventsToFrames(*page, frames, key, oldValue, newValue, sourceFrame->document()->url(), securityOrigin);
}

void StorageEventDispatcher::dispatchLocalStorageEvents(const String& key, const String& oldValue, const String& newValue, SecurityOrigin* securityOrigin, Frame* sourceFrame)
{
    Page* page = sourceFrame->page();
    if (!page)
        return;

    Vector<RefPtr<Frame>> frames;

    // Send events to every page.
    const HashSet<Page*>& pages = page->group().pages();
    for (HashSet<Page*>::const_iterator it = pages.begin(), end = pages.end(); it != end; ++it) {
        for (Frame* frame = &(*it)->mainFrame(); frame; frame = frame->tree().traverseNext()) {
            if (sourceFrame != frame && frame->document()->securityOrigin()->equal(securityOrigin))
                frames.append(frame);
        }
    }

    dispatchLocalStorageEventsToFrames(page->group(), frames, key, oldValue, newValue, sourceFrame->document()->url(), securityOrigin);
}

void StorageEventDispatcher::dispatchSessionStorageEventsToFrames(Page& page, const Vector<RefPtr<Frame>>& frames, const String& key, const String& oldValue, const String& newValue, const String& url, SecurityOrigin* securityOrigin)
{
    InspectorInstrumentation::didDispatchDOMStorageEvent(key, oldValue, newValue, SessionStorage, securityOrigin, &page);

    for (unsigned i = 0; i < frames.size(); ++i) {
        ExceptionCode ec = 0;
        Storage* storage = frames[i]->document()->domWindow()->sessionStorage(ec);
        if (!ec)
            frames[i]->document()->enqueueWindowEvent(StorageEvent::create(eventNames().storageEvent, key, oldValue, newValue, url, storage));
    }
}

void StorageEventDispatcher::dispatchLocalStorageEventsToFrames(PageGroup& pageGroup, const Vector<RefPtr<Frame>>& frames, const String& key, const String& oldValue, const String& newValue, const String& url, SecurityOrigin* securityOrigin)
{
    const HashSet<Page*>& pages = pageGroup.pages();
    for (HashSet<Page*>::const_iterator it = pages.begin(), end = pages.end(); it != end; ++it)
        InspectorInstrumentation::didDispatchDOMStorageEvent(key, oldValue, newValue, LocalStorage, securityOrigin, *it);

    for (unsigned i = 0; i < frames.size(); ++i) {
        ExceptionCode ec = 0;
        Storage* storage = frames[i]->document()->domWindow()->localStorage(ec);
        if (!ec)
            frames[i]->document()->enqueueWindowEvent(StorageEvent::create(eventNames().storageEvent, key, oldValue, newValue, url, storage));
    }
}

} // namespace WebCore