#include "config.h"
#include "CachedPage.h"
#include "AnimationController.h"
#include "CachedFramePlatformData.h"
#include "DOMWindow.h"
#include "Document.h"
#include "DocumentLoader.h"
#include "EventHandler.h"
#include "EventNames.h"
#include "ExceptionCode.h"
#include "FocusController.h"
#include "Frame.h"
#include "FrameLoader.h"
#include "FrameLoaderClient.h"
#include "FrameView.h"
#include "HistoryController.h"
#include "HistoryItem.h"
#include "Logging.h"
#include "Page.h"
#include "PageTransitionEvent.h"
#include "ScriptController.h"
#include "SerializedScriptValue.h"
#include <wtf/RefCountedLeakCounter.h>
#include <wtf/text/CString.h>
#if ENABLE(SVG)
#include "SVGDocumentExtensions.h"
#endif
#if ENABLE(TOUCH_EVENTS)
#include "Chrome.h"
#include "ChromeClient.h"
#endif
#if USE(ACCELERATED_COMPOSITING)
#include "PageCache.h"
#endif
namespace WebCore {
#ifndef NDEBUG
static WTF::RefCountedLeakCounter& cachedFrameCounter()
{
DEFINE_STATIC_LOCAL(WTF::RefCountedLeakCounter, counter, ("CachedFrame"));
return counter;
}
#endif
CachedFrameBase::CachedFrameBase(Frame* frame)
: m_document(frame->document())
, m_documentLoader(frame->loader()->documentLoader())
, m_view(frame->view())
, m_mousePressNode(frame->eventHandler()->mousePressNode())
, m_url(frame->document()->url())
, m_isMainFrame(!frame->tree()->parent())
#if USE(ACCELERATED_COMPOSITING)
, m_isComposited(frame->view()->hasCompositedContent())
#endif
{
}
CachedFrameBase::~CachedFrameBase()
{
#ifndef NDEBUG
cachedFrameCounter().decrement();
#endif
ASSERT(!m_document);
}
void CachedFrameBase::restore()
{
ASSERT(m_document->view() == m_view);
if (m_isMainFrame)
m_view->setParentVisible(true);
Frame* frame = m_view->frame();
m_cachedFrameScriptData->restore(frame);
#if ENABLE(SVG)
if (m_document->svgExtensions())
m_document->accessSVGExtensions()->unpauseAnimations();
#endif
frame->animation()->resumeAnimationsForDocument(m_document.get());
frame->eventHandler()->setMousePressNode(m_mousePressNode.get());
m_document->resumeActiveDOMObjects(ActiveDOMObject::DocumentWillBecomeInactive);
m_document->resumeScriptedAnimationControllerCallbacks();
frame->script()->updatePlatformScriptObjects();
#if USE(ACCELERATED_COMPOSITING)
if (m_isComposited)
frame->view()->restoreBackingStores();
#endif
frame->loader()->client()->didRestoreFromPageCache();
for (unsigned i = 0; i < m_childFrames.size(); ++i)
frame->tree()->appendChild(m_childFrames[i]->view()->frame());
for (unsigned i = 0; i < m_childFrames.size(); ++i)
m_childFrames[i]->open();
m_document->enqueuePageshowEvent(PageshowEventPersisted);
HistoryItem* historyItem = frame->loader()->history()->currentItem();
m_document->enqueuePopstateEvent(historyItem && historyItem->stateObject() ? historyItem->stateObject() : SerializedScriptValue::nullValue());
#if ENABLE(TOUCH_EVENTS)
if (m_document->hasTouchEventHandlers())
m_document->page()->chrome().client()->needTouchEvents(true);
#endif
m_document->documentDidResumeFromPageCache();
}
CachedFrame::CachedFrame(Frame* frame)
: CachedFrameBase(frame)
{
#ifndef NDEBUG
cachedFrameCounter().increment();
#endif
ASSERT(m_document);
ASSERT(m_documentLoader);
ASSERT(m_view);
if (frame->page()->focusController()->focusedFrame() == frame)
frame->page()->focusController()->setFocusedFrame(frame->page()->mainFrame());
m_view->detachCustomScrollbars();
m_document->setInPageCache(true);
frame->loader()->stopLoading(UnloadEventPolicyUnloadAndPageHide);
for (Frame* child = frame->tree()->firstChild(); child; child = child->tree()->nextSibling())
m_childFrames.append(CachedFrame::create(child));
m_document->documentWillSuspendForPageCache();
m_document->suspendScriptedAnimationControllerCallbacks();
m_document->suspendActiveDOMObjects(ActiveDOMObject::DocumentWillBecomeInactive);
m_cachedFrameScriptData = adoptPtr(new ScriptCachedFrameData(frame));
m_document->domWindow()->suspendForPageCache();
frame->loader()->client()->savePlatformDataToCachedFrame(this);
#if USE(ACCELERATED_COMPOSITING)
if (m_isComposited && pageCache()->shouldClearBackingStores())
frame->view()->clearBackingStores();
#endif
frame->clearTimers();
for (unsigned i = 0; i < m_childFrames.size(); ++i)
frame->tree()->removeChild(m_childFrames[i]->view()->frame());
if (!m_isMainFrame)
frame->page()->decrementSubframeCount();
frame->loader()->client()->didSaveToPageCache();
#ifndef NDEBUG
if (m_isMainFrame)
LOG(PageCache, "Finished creating CachedFrame for main frame url '%s' and DocumentLoader %p\n", m_url.string().utf8().data(), m_documentLoader.get());
else
LOG(PageCache, "Finished creating CachedFrame for child frame with url '%s' and DocumentLoader %p\n", m_url.string().utf8().data(), m_documentLoader.get());
#endif
}
void CachedFrame::open()
{
ASSERT(m_view);
m_view->frame()->loader()->open(*this);
if (!m_isMainFrame)
m_view->frame()->page()->incrementSubframeCount();
}
void CachedFrame::clear()
{
if (!m_document)
return;
ASSERT(!m_document->inPageCache());
ASSERT(m_view);
ASSERT(m_document->frame() == m_view->frame());
for (int i = m_childFrames.size() - 1; i >= 0; --i)
m_childFrames[i]->clear();
m_document = 0;
m_view = 0;
m_mousePressNode = 0;
m_url = KURL();
m_cachedFramePlatformData.clear();
m_cachedFrameScriptData.clear();
}
void CachedFrame::destroy()
{
if (!m_document)
return;
ASSERT(m_document->inPageCache());
ASSERT(m_view);
ASSERT(m_document->frame() == m_view->frame());
m_document->domWindow()->willDestroyCachedFrame();
if (!m_isMainFrame) {
m_view->frame()->detachFromPage();
m_view->frame()->loader()->detachViewsAndDocumentLoader();
}
for (int i = m_childFrames.size() - 1; i >= 0; --i)
m_childFrames[i]->destroy();
if (m_cachedFramePlatformData)
m_cachedFramePlatformData->clear();
Frame::clearTimers(m_view.get(), m_document.get());
m_document->removeAllEventListeners();
m_document->setInPageCache(false);
m_document->detach();
m_view->clearFrame();
clear();
}
void CachedFrame::setCachedFramePlatformData(PassOwnPtr<CachedFramePlatformData> data)
{
m_cachedFramePlatformData = data;
}
CachedFramePlatformData* CachedFrame::cachedFramePlatformData()
{
return m_cachedFramePlatformData.get();
}
int CachedFrame::descendantFrameCount() const
{
int count = m_childFrames.size();
for (size_t i = 0; i < m_childFrames.size(); ++i)
count += m_childFrames[i]->descendantFrameCount();
return count;
}
}