/*

* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:   Frame in webkit side

*

*/

#include "config.h"

#include "../../bidi.h"

#include "WebFrame.h"

#include "WebCoreWidget.h"

#include "WebCoreFrameBridge.h"

#include "WebFrameBridge.h"

#include "WebFrameView.h"

#include "WebView.h"

#include "WebChromeClient.h"

#include "WebFrameLoaderClient.h"

#include "Page.h"

#include "Frame.h"

#include "FrameView.h"

#include "FrameTree.h"

#include "FrameLoader.h"

#include "DocumentLoader.h"

#include "SelectionController.h"

#include "SubstituteData.h"

#include "RenderWidget.h"

#include "HTMLNames.h"

#include "GraphicsContext.h"

#include "HTMLFormElement.h"

#include "ResourceRequest.h"

#include "webkitlogger.h"

#include "webutil.h"

#include "PluginSkin.h"

#include "PluginHandler.h"

#include "kjs_proxy.h"

#if PLATFORM(SYMBIAN)

#include "oom.h"

#endif

using namespace WebCore;

using namespace HTMLNames;

WebFrame::WebFrame() :

    m_view(0)

   ,m_bridge(0)

{

}

WebFrame::~WebFrame() 

{

    if (m_view)

        m_view->deref();

}

void WebFrame::initWithWebFrameView(WebFrameView* view, WebView* topView, WebFrameBridge* bridge)

{

    if (m_view)

        m_view->deref();

    m_view = view;

    if (m_view) {

        m_view->ref();

        m_view->setWebFrame(this);

        m_view->setTopView(topView);

    }

    setBridge(bridge);

}

void WebFrame::loadRequest(const WebCore::ResourceRequest& request,const WebCore::String* windowType)

{

    FrameLoader* fl = frameLoader();

    if (fl) {

        if(windowType)

            fl->load(request,*windowType);

        else

            fl->load(request);

    }

 }

void WebFrame::loadData(const WebCore::ResourceRequest& request, WebCore::SubstituteData& substituteData)

{

    if (FrameLoader* fl = frameLoader())

        fl->load(request, substituteData);

}

void WebFrame::loadURL(const TDesC8& url, TInt cachemode, const String& referrer,const WebCore::String* windowType) 

{

#if PLATFORM(SYMBIAN)

    OOM_PRE_CHECK(1024*1024, 0, "WebFrame::loadURL")

#endif

    ResourceRequestCachePolicy cachePolicy;

    switch (cachemode) 

    {

    default:

    case TBrCtlDefs::ECacheModeNormal: 

        cachePolicy = UseProtocolCachePolicy;

        break;

    case TBrCtlDefs::ECacheModeNoCache:

        cachePolicy = ReloadIgnoringCacheData;

        break;

    case TBrCtlDefs::ECacheModeHistory:

        cachePolicy = ReturnCacheDataElseLoad;

        break;

    case TBrCtlDefs::ECacheModeOnlyCache:

        cachePolicy = ReturnCacheDataDontLoad;

        break;

    }

    ResourceRequest request = (KURL(url));

    request.setMainLoad(true);

    request.setCachePolicy(cachePolicy);

    if(!referrer.isNull())

        request.setHTTPReferrer(referrer);

    request.setHTTPMethod("GET");

    loadRequest(request,windowType);

#if PLATFORM(SYMBIAN)

    OOM_POST_CHECK_FAILED(return;)

#endif    

}

// Called by the bridge to load into a sub-frmae

void WebFrame::loadURL(const TPtrC8 url, const TPtrC referrer, WebFrame* childFrame)

{

    /* fixme tot: do we need to hook up with bf list?

    HistoryItem* parentItem = core(this)->loader()->currentHistoryItem();

    FrameLoadType loadType = _frameLoader()->loadType();

    FrameLoadType childLoadType = FrameLoadTypeRedirectWithLockedHistory;

    if (parentItem && parentItem->children().size() && 

        (isBackForwardLoadType(loadType) 

        || loadType == FrameLoadTypeReload 

        || loadType == FrameLoadTypeReloadAllowingStaleData)) 

    {

        HistoryItem* childItem = parentItem->childItemWithName(childFrame->name());

        if (childItem) {

            childLoadType = loadType;

            if (isBackForwardLoadType(loadType))

                core(childFrame)->loader()->setProvisionalHistoryItem(childItem);

            else

                core(childFrame)->loader()->setCurrentHistoryItem(childItem);

        }

    }*/

    // tot fixme: saved pages not implemented.

    FrameLoadType childLoadType = frameLoader()->loadType();

    childFrame->frameLoader()->load(url, referrer, childLoadType, String(), 0, 0);

}

void WebFrame::paintRect(WebCoreGraphicsContext& gc, const TRect& rect)

{

    WebCore::GraphicsContext ctx(&gc);

    core(this)->paint(&ctx, enclosingIntRect(rect));

}

FrameLoader* WebFrame::frameLoader()

{

    Frame* frame = core(this);

    return frame ? frame->loader() : 0;

}

bool WebFrame::isMainFrame() const

{

    Frame* coreFrame = core(this);

    if (!coreFrame)

        return false;

    return coreFrame == coreFrame->page()->mainFrame();

}

// selection

bool WebFrame::hasSelection()

{

    if (Frame* coreFrame = core(this)) {

        return !coreFrame->selectionController()->isNone();

    }

    return false;

}

void WebFrame::clearSelection()

{

    Frame* coreFrame = core(this);

    if (!coreFrame)

        return;

    coreFrame->selectionController()->clear();

}

WebFrame* WebFrame::findFrameWithSelection()

{

    Frame* coreFrame = core(this);

    for (Frame* frame = coreFrame; frame; frame = frame->tree()->traverseNext(coreFrame))

        if (kit(frame)->hasSelection())

            return kit(frame);

    return 0;

}

void WebFrame::stopLoading()

{

    if (FrameLoader* fl = frameLoader())

        fl->stopForUserCancel();

}

void WebFrame::reload()

{

    frameLoader()->reload();

}

WebFrame* WebFrame::findFrameNamed(const TPtr& name)

{

    Frame* coreFrame = core(this);

    if (!coreFrame)

        return 0;

    return kit(coreFrame->tree()->find(name));

}

WebFrame* WebFrame::parentFrame()

{

    Frame* coreFrame = core(this);

    if (!coreFrame) 

        return 0;

    return kit(coreFrame->tree()->parent());

}

bool WebFrame::isIframe() const

{

    Frame* coreFrame = core(this);

    if (!coreFrame)

        return false;

    Frame* pf = coreFrame->tree()->parent();

    if (pf)

        return !pf->isFrameSet();

    return false;

}

bool WebFrame::isFrameSet() const

{

    Frame* coreFrame = core(this);

    if (!coreFrame)

        return false;

    return coreFrame->isFrameSet();

}

WTF::Vector<WebFrame*> WebFrame::childFrames()

{

    Frame* coreFrame = core(this);

    if (!coreFrame)

        return WTF::Vector<WebFrame*>();

    WTF::Vector<WebFrame*> children;

    children.reserveCapacity(coreFrame->tree()->childCount());

    for (Frame* child = coreFrame->tree()->firstChild(); child; child = child->tree()->nextSibling())

        children.append(kit(child));

    return children;

}

void WebFrame::addChild(WebFrame* child)

{

    core(this)->tree()->appendChild(adoptRef(core(child)));

    if (child->documentLoader())

        child->documentLoader()->setOverrideEncoding(documentLoader()->overrideEncoding());

    // update the view heirachy

    m_view->addChild(child->frameView());

}

DocumentLoader* WebFrame::documentLoader()

{

    return frameLoader()->documentLoader();

}

void WebFrame::notifyPluginsOfScrolling()

{

    Frame* coreFrame = core(this);

    for (Frame* frame = coreFrame; frame; frame = frame->tree()->traverseNext(coreFrame)) {

        PassRefPtr<HTMLCollection> objects = frame->document()->objects();       

        for (Node* n = objects->firstItem(); n; n = objects->nextItem()) 

            notifyPluginOfScrolling(n->renderer());             

        PassRefPtr<HTMLCollection> embeds = frame->document()->embeds();       

        for (Node* n = embeds->firstItem(); n; n = embeds->nextItem()) 

            notifyPluginOfScrolling(n->renderer()); 

        }

}

void WebFrame::notifyPluginOfScrolling(RenderObject* renderer)

{        

    MWebCoreObjectWidget* view = widget(renderer);

    //Don't repaint the plugin objects if Browser is in PageView mode

    if (view) {

        view->positionChanged();

        TRect r = m_view->toDocCoords(static_cast<PluginSkin*>(view)->getPluginWinRect());

        m_view->topView()->scheduleRepaint(r);

    }

}

PluginSkin* WebFrame::focusedPlugin()

{

    PluginHandler* pluginHandler = WebCore::StaticObjectsContainer::instance()->pluginHandler();

    PluginSkin* plugin = pluginHandler->activePlugin();

    if (!plugin) {

        //no focused plugin. If only one plugin is present return that plugin

        WTF::HashSet<PluginSkin*> pluginObjs = pluginHandler->pluginObjects();

        if (pluginObjs.size() == 1) {

            WTF::HashSet<PluginSkin*>::iterator it = pluginObjs.begin();

            plugin = *it;

        }

    }

    return plugin;

}

void WebFrame::setFrameView(WebFrameView* v) 

{

    if (m_view)

        m_view->deref();

    m_view = v;

    if (m_view)

        m_view->ref();

}

void WebFrame::setBridge(WebFrameBridge* b)

{

    if (m_bridge) 

        m_bridge->deref();

    m_bridge = b;

    if (m_bridge) 

        m_bridge->ref();

}

WebFrame* WebFrame::frameAtPoint(const TPoint& pt_)

{

    WTF::Vector<WebFrame*> ch = childFrames();

    WebFrame* frm = 0;

    // Check the children of the frame only if this frame also contains pt_

    // If a child iframe is bigger than the parent, it should not be picked.    

    if (m_view->isVisible() && m_view->rectInGlobalCoords().Contains(pt_)) {

        Vector<WebFrame*>::iterator end = ch.end();

        for (Vector<WebFrame*>::iterator itr = ch.begin(); itr != end; itr++) {

            WebFrame* f = (*itr);

            if( (f = f->frameAtPoint(pt_ + m_view->toViewCoords(m_view->contentPos()))) != 0 )

                {

                // TODO: this only fixes www.aol.com login iframe issue,

                // a better solution is to check the z-index for each frame.

                // Anyway, overlapping iframes are not common.

                frm = f;

                }

        }

        if (frm)

            return frm;

        return this;

    }

    return 0;

}

int WebFrame::imageCount(bool visibleOnly_) 

{   

    int imageCount = imageCountInFrame(*this, visibleOnly_);

    //

    WTF::Vector<WebFrame*> ch = childFrames();

    WebFrame* frm = 0;

    Vector<WebFrame*>::iterator end = ch.end();

    for (Vector<WebFrame*>::iterator itr = ch.begin(); itr != end; itr++)

        imageCount+=(*itr)->imageCount(visibleOnly_);

    return imageCount;

}

CArrayFixFlat<TBrCtlImageCarrier>* WebFrame::imageData(bool visibleOnly_) 

{   

    CArrayFixFlat<TBrCtlImageCarrier>* imageList = imagesInFrame(*this, visibleOnly_);

    //

    WTF::Vector<WebFrame*> ch = childFrames();

    WebFrame* frm = 0;

    Vector<WebFrame*>::iterator end = ch.end();

    for (Vector<WebFrame*>::iterator itr = ch.begin(); itr != end; itr++) {

        CArrayFixFlat<TBrCtlImageCarrier>* childImageList = (*itr)->imageData(visibleOnly_);

        for (int i = 0; i < childImageList->Count(); i++)

            imageList->AppendL(childImageList->At(i));

        childImageList->Reset();

        delete childImageList;

    }

    return imageList;

}

CArrayFixFlat<TBrCtlSubscribeTo>* WebFrame::findSubscribeTo() 

{   

    CArrayFixFlat<TBrCtlSubscribeTo>* linkList = findSubscribeToInFrame(*this);

    //

    WTF::Vector<WebFrame*> ch = childFrames();

    WebFrame* frm = 0;

    Vector<WebFrame*>::iterator end = ch.end();

    for (Vector<WebFrame*>::iterator itr = ch.begin(); itr != end; itr++) {

        CArrayFixFlat<TBrCtlSubscribeTo>* childLinkList = (*itr)->findSubscribeTo();

        for (int i = 0; i < childLinkList->Count(); i++)

            linkList->AppendL(childLinkList->At(i));

        childLinkList->Reset();

        delete childLinkList;

    }

    return linkList;

}

DOMDocument* WebFrame::DOMDocument()

{

    return 0;

}

void WebFrame::scalingFactorChanged(int factor)

{

    bridge()->scalingFactorChanged(factor);

}

// helpers

Frame* core(const WebFrame* frame)

{

    if (!frame)

        return NULL;

    if (!frame->bridge())

        return NULL;

    return frame->bridge()->frame();

}

WebFrame* kit(Frame* frame)

{

    return frame ? ((WebFrameBridge *)frame->bridge())->webFrame(): NULL;

}

WebView *kit(Page* page)

{

    return page ? static_cast<WebChromeClient*>(page->chrome()->client())->webView() : 0;

}

WebFrame* mainFrame(WebFrame* frame) 

{

    if (!frame)

        return 0;

    if (frame->isMainFrame())

        return frame;

    Frame* coreFrame = core(frame);

    if (!coreFrame)

        return 0;

    return kit(coreFrame->page()->mainFrame());

}

CBrCtl* control(WebCore::Frame* frame) 

{

    return control(kit(frame));

}

CBrCtl* control(const WebFrame* webFrame)

{

    if (webFrame && webFrame->frameView())

        return webFrame->frameView()->topView()->brCtl();

    return NULL;

}

MWebCoreObjectWidget* widget(RenderObject* render_) 

{   

    if (!render_)

        return NULL;

    if (render_->isWidget()) {

        Widget* widget = static_cast<RenderWidget*>(render_)->widget();

        if (widget) {

            MWebCoreWidget* view = widget->getView();    

            if(view && view->isObjectView())

                return static_cast<MWebCoreObjectWidget*>(view);

        }

    }

    return NULL;    

}

MWebCoreObjectWidget* widget(Node* node_) 

{   

    if (!node_)

        return NULL;

    return widget(node_->renderer());

}

bool WebFrame::executeScript(const WebCore::String& script)

{

    bool result = false;

    KJSProxy *proxy = core(this)->scriptProxy();

    if (proxy) {

        KJS::JSValue *v = proxy->evaluate(String(), 0, script);

        if (v)

            result = true;

    }

    return result;

}

void WebFrame::makeVisiblePlugins(TBool visible)

{

    MWebCoreObjectWidget* view = NULL;

    int pluginCount = 0;

    Frame* coreFrame = core(this);

    PluginSkin* ptr = 0;

    for (Frame* frame = coreFrame; frame; frame = frame->tree()->traverseNext(coreFrame)) {

        PassRefPtr<HTMLCollection> objects = frame->document()->objects();     

        for (Node* n = objects->firstItem(); n; n = objects->nextItem()) {

            view = widget(n); 

            if (view) {