blob: 79bf90bfeb77bab808628acfb69a14dc7a6f5c12 [file] [log] [blame]
/*
* Copyright (C) 2007 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 COMPUTER, 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 COMPUTER, 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 "History.h"
#include "BackForwardController.h"
#include "Document.h"
#include "ExceptionCode.h"
#include "Frame.h"
#include "FrameLoader.h"
#include "FrameLoaderClient.h"
#include "HistoryController.h"
#include "HistoryItem.h"
#include "Page.h"
#include "SecurityOrigin.h"
#include "SerializedScriptValue.h"
#include <wtf/MainThread.h>
namespace WebCore {
History::History(Frame* frame)
: DOMWindowProperty(frame)
, m_lastStateObjectRequested(0)
{
}
unsigned History::length() const
{
if (!m_frame)
return 0;
if (!m_frame->page())
return 0;
return m_frame->page()->backForward()->count();
}
PassRefPtr<SerializedScriptValue> History::state()
{
m_lastStateObjectRequested = stateInternal();
return m_lastStateObjectRequested;
}
PassRefPtr<SerializedScriptValue> History::stateInternal() const
{
if (!m_frame)
return 0;
if (HistoryItem* historyItem = m_frame->loader()->history()->currentItem())
return historyItem->stateObject();
return 0;
}
bool History::stateChanged() const
{
return m_lastStateObjectRequested != stateInternal();
}
bool History::isSameAsCurrentState(SerializedScriptValue* state) const
{
return state == stateInternal().get();
}
void History::back()
{
go(-1);
}
void History::back(ScriptExecutionContext* context)
{
go(context, -1);
}
void History::forward()
{
go(1);
}
void History::forward(ScriptExecutionContext* context)
{
go(context, 1);
}
void History::go(int distance)
{
if (!m_frame)
return;
m_frame->navigationScheduler()->scheduleHistoryNavigation(distance);
}
void History::go(ScriptExecutionContext* context, int distance)
{
if (!m_frame)
return;
ASSERT(isMainThread());
Document* activeDocument = toDocument(context);
if (!activeDocument)
return;
if (!activeDocument->canNavigate(m_frame))
return;
m_frame->navigationScheduler()->scheduleHistoryNavigation(distance);
}
KURL History::urlForState(const String& urlString)
{
KURL baseURL = m_frame->document()->baseURL();
if (urlString.isEmpty())
return baseURL;
return KURL(baseURL, urlString);
}
void History::stateObjectAdded(PassRefPtr<SerializedScriptValue> data, const String& title, const String& urlString, StateObjectType stateObjectType, ExceptionCode& ec)
{
if (!m_frame || !m_frame->page())
return;
KURL fullURL = urlForState(urlString);
if (!fullURL.isValid() || !m_frame->document()->securityOrigin()->canRequest(fullURL)) {
ec = SECURITY_ERR;
return;
}
if (stateObjectType == StateObjectPush)
m_frame->loader()->history()->pushState(data, title, fullURL.string());
else if (stateObjectType == StateObjectReplace)
m_frame->loader()->history()->replaceState(data, title, fullURL.string());
if (!urlString.isEmpty())
m_frame->document()->updateURLForPushOrReplaceState(fullURL);
if (stateObjectType == StateObjectPush)
m_frame->loader()->client()->dispatchDidPushStateWithinPage();
else if (stateObjectType == StateObjectReplace)
m_frame->loader()->client()->dispatchDidReplaceStateWithinPage();
}
} // namespace WebCore