/*

* Copyright (c) 2007 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:  

*

*/

#include <../bidi.h>

#include "config.h"

#include "WebCoreFrameBridge.h"

#include "FrameLoader.h"

#include "FrameTree.h"

#include "FrameView.h"

#include "runtime_root.h"

#include "runtime.h"

#include "kjs_window.h"

#include "DOMWindow.h"

#include "RenderPart.h"

#include "HTMLNames.h"

#include "EventNames.h"

#include "WebFrame.h"

#include "WebFrameView.h"

#include "WebView.h"

#include "WebUtil.h"

#include "RenderView.h"

#include "Page.h"

#include "HTMLImageElement.h"

#include "RenderImage.h"

#include "StaticObjectsContainer.h"

#include "PlatformFontCache.h"

using namespace WebCore;

using namespace HTMLNames;

using namespace EventNames;

using KJS::Bindings::RootObject;

using KJS::ExecState;

using KJS::JSObject;

using KJS::Window;

const int KXHTMLDefaultFontMultiplier = 120;

const int KDefaultLowResFontMultiplier = 120;

const int KDefaultFontMultiplier = 140;

static PassRefPtr<RootObject> createRootObject(void* nativeHandle)

{

/*    NSView *view = (NSView *)nativeHandle;

    WebCoreFrameBridge *bridge = [[WebCoreViewFactory sharedFactory] bridgeForView:view];

    if (!bridge)

        return 0;

    Frame* frame = bridge->_frame;

    return frame->createRootObject(nativeHandle, frame->scriptProxy()->interpreter()); */

    return NULL;

}

static void updateRenderingForBindings(ExecState* exec, JSObject* rootObject)

{

    if (!rootObject)

        return;

    Window* window = static_cast<Window*>(rootObject);

    if (!window)

        return;

    if (Document* doc = window->impl()->frame()->document())

        doc->updateRendering();

}

static WebCoreFrameBridge* bridge(Frame* frame)

{

    if (!frame)

        return NULL;

    return frame->bridge();

}

WebCoreFrameBridge::WebCoreFrameBridge() :

    m_frame(0)

{

    m_focusableNodeList.clear();    

}

WebCoreFrameBridge::~WebCoreFrameBridge() 

{

}

void WebCoreFrameBridge::init()

{

    static bool initializedKJS = false;

    if (!initializedKJS) {

        initializedKJS = true;

        // s602 mac only?

        //RootObject::setCreateRootObject(createRootObject);

        KJS::Bindings::Instance::setDidExecuteFunction(updateRenderingForBindings);

    }

    m_shouldCreateRenderers = true;

}

void WebCoreFrameBridge::addJSExtension(const TDesC& id, KJS::JSObject* obj)

{

    KJS::Window* window = KJS::Window::retrieveWindow(m_frame);        

    if (window) {       

        ExecState* exec = window->interpreter()->globalExec();        

        if (exec && obj) {        

            obj->setPrototype(window->interpreter()->builtinObjectPrototype());

            window->put(exec, KJS::Identifier((const KJS::UChar *)id.Ptr(), id.Length()), obj, KJS::DontDelete);

        }        

    }            

}

WebCore::Frame* WebCoreFrameBridge::frame() 

{

    return m_frame;

}

void WebCoreFrameBridge::close()

{

    clearFrame();

    m_closed = true;

}

void WebCoreFrameBridge::addData(const char* data, int length)

{

    // Document may be nil if the part is about to redirect

    // as a result of JS executing during load, i.e. one frame

    // changing another's location before the frame's document

    // has been created. 

    if (doc) {

        doc->setShouldCreateRenderers(shouldCreateRenderers());

        m_frame->loader()->addData(data, length);

    }

}

void WebCoreFrameBridge::receivedData(const char* data, int length, String textEncodingName)

{

    // Set the encoding. This only needs to be done once, but it's harmless to do it again later.

    String encoding;

    if (m_frame)

        encoding = m_frame->loader()->documentLoader()->overrideEncoding();

    bool userChosen = !encoding.isNull() && !encoding.isEmpty();

    if (encoding.isNull()||encoding.isEmpty())

        encoding = textEncodingName;

    addData(data, length);

}

void WebCoreFrameBridge::clearFrame()

{

    m_frame = NULL;

}

void WebCoreFrameBridge::createFrameViewWithScrollView(MWebCoreWidget* view, int marginWidth, int marginHeight)

{

    // If we own the view, delete the old one - otherwise the render m_frame will take care of deleting the view.

    FrameView* frameView = new FrameView(m_frame);

    m_frame->setView(frameView);

    frameView->deref();

    frameView->setView(view);

    if (marginWidth >= 0)

        frameView->setMarginWidth(marginWidth);

    if (marginHeight >= 0)

        frameView->setMarginHeight(marginHeight);

}

void WebCoreFrameBridge::forceLayoutAdjustingViewSize(bool flag)

{

    m_frame->forceLayout(!flag);

    if (flag)

        m_frame->view()->adjustViewSize();

}

void WebCoreFrameBridge::forceLayoutWithMinimumPageWidth(float minPageWidth, float maxPageWidth, bool adjustingViewSize)

{

    m_frame->forceLayoutWithPageWidthRange(minPageWidth, maxPageWidth, adjustingViewSize);

}

void WebCoreFrameBridge::sendResizeEvent()

{

    m_frame->sendResizeEvent();

}

void WebCoreFrameBridge::sendScrollEvent()

{

    m_frame->sendScrollEvent();

}

void WebCoreFrameBridge::installInFrame(MWebCoreWidget* view)

{

    // If this isn't the main frame, it must have a render m_frame set, or it

    // won't ever get installed in the view hierarchy.

    ASSERT(m_frame == m_frame->page()->mainFrame() || m_frame->ownerElement());

    m_frame->view()->setView(view);

    // FIXME: frame tries to do this too, is it needed?

    if (m_frame->ownerRenderer()) {

        m_frame->ownerRenderer()->setWidget(m_frame->view());

        // Now the render part owns the view, so we don't any more.

    }

    m_frame->view()->initScrollbars();

}

void WebCoreFrameBridge::setShouldCreateRenderers(bool f)

{

    m_shouldCreateRenderers = f;

}

bool WebCoreFrameBridge::shouldCreateRenderers()

{

    return m_shouldCreateRenderers;

}

bool WebCoreFrameBridge::needsLayout()

{

    return m_frame->view() ? m_frame->view()->needsLayout() : false;

}

void WebCoreFrameBridge::setNeedsLayout()

{

    if (m_frame->view())

        m_frame->view()->setNeedsLayout();

}

TPtrC8 WebCoreFrameBridge::baseURL()

{

    return m_frame->loader()->completeURL(m_frame->document()->baseURL()).des();

}

void WebCoreFrameBridge::updateFocusableRectList()

{

    // layout is changed, focusrect list needs update

    m_focusableNodeList.clear();

    for(Node* n = frame()->document(); n != 0; n = n->traverseNextNode()) {

        if(n->isFocusable() || n->hasTagName(areaTag))

            m_focusableNodeList.append(n->getRect());

    }

}

void WebCoreFrameBridge::updateThumbnail()

{

    WebFrame* frame = kit(m_frame);

    if (frame) {

        frame->frameView()->topView()->updatePageScaler();

    }

}

int WebCoreFrameBridge::textZoomPercent() const

{

    // FIXME: need to hook up with screen size.

    int sizeMultiplier = KXHTMLDefaultFontMultiplier;

    if (m_frame->document() && m_frame->document()->htmlMode() != Document::XHtml) {

        sizeMultiplier = StaticObjectsContainer::instance()->screenResolution() == ELowScreenResolution ?

        KDefaultLowResFontMultiplier : KDefaultFontMultiplier;

    }

#if PLATFORM(SYMBIAN)

    TLanguage uilang = User::Language();

    if(uilang == ELangKorean)

    {

       sizeMultiplier = 100;

    }

#endif

    if (control(m_frame)->settings())

        sizeMultiplier = textMultiplier(control(m_frame)->settings()->brctlSetting(TBrCtlDefs::ESettingsFontSize), sizeMultiplier);

    return sizeMultiplier;

}

bool WebCoreFrameBridge::searchFor(TPtrC string, bool forward, bool caseFlag, bool wrapFlag, bool startInSelection)

{

    return m_frame->findString(string, forward, caseFlag, wrapFlag, startInSelection);

}

void WebCoreFrameBridge::scalingFactorChanged(int factor)

{

    StaticObjectsContainer::instance()->fontCache()->setFontZoomFactor(factor);

}

int WebCoreFrameBridge::maxBidiWidth() 

{

    if (m_frame) {

        WebFrame* frame = kit(m_frame);

        if (frame && frame->frameView())

            return frame->frameView()->getBidiWidth();    

        }

    return KMaxTInt;        

}

void WebCoreFrameBridge::setWritingDirectionRtl(bool isRtl)

{

    // update rtl only for mainframe

    if (m_frame && m_frame == m_frame->page()->mainFrame()) {

            control(m_frame)->brCtlLayoutObserver()->NotifyLayoutChange(isRtl ? EOriginTopRight : EOriginTopLeft);

        if (kit(m_frame->page())->pageScaler())

            kit(m_frame->page())->pageScaler()->SetRelativePosition(0, 3, isRtl ? CPageScaler::ETopLeft : CPageScaler::ETopRight);

    }

}

bool WebCoreFrameBridge::getTypeFromElement(Node* node, TBrCtlDefs::TBrCtlElementType& aElType, TRect& aFocusRect, Node*& aRNode) const

{ 

    if(node && m_frame) {

        // get the navigable node at this point

        for (Node* n = node; n; n = n->parentNode()) {

            if( n->isFocusable() ) {

                aElType = nodeTypeB(n, m_frame);

                aFocusRect = n->getRect();

                aRNode = n;

                return true;

            }

            else {

                EventTargetNode* etn = NULL;

                if (n->isEventTargetNode()) {

                    etn = EventTargetNodeCast(n);

                }

                if( etn && (etn->getHTMLEventListener(mouseoverEvent) 

                    || etn->getHTMLEventListener(mousedownEvent)

                    || etn->getHTMLEventListener(mouseupEvent)) ) {                

                    aFocusRect = n->getRect();

                    aElType = TBrCtlDefs::EElementMouseButtonListener;

                    aRNode = n;

                    return true;

                }

                else if (n->isElementNode() && n->hasTagName(areaTag)) {

                    HTMLElement* e =  static_cast<HTMLElement*>(n);

                    if(!e->getAttribute(hrefAttr).isNull()) {

                        aElType = TBrCtlDefs::EElementAreaBox;

                        aFocusRect = n->getRect();

                        aRNode = n;

                        return true;

                    }

                }

                else if (n->isElementNode() && n->hasTagName(imgTag)) {

                    HTMLElement* e =  static_cast<HTMLElement*>(n);

                    // First check if the image is inside an anchor

                    for (Node* np = n; np; np = np->parentNode()) {

                        if( np->hasTagName(aTag) ) {

                            HTMLElement* ep =  static_cast<HTMLElement*>(np);

                            if(!ep->getAttribute(hrefAttr).isNull()) {

                                aElType = nodeTypeB(np, m_frame);

                                aFocusRect = np->getRect();

                                aRNode = np;

                                return true;

                            }

                        }

                    }

                    HTMLImageElement* imageElement = static_cast<HTMLImageElement *>(n);

                    RenderImage *r = static_cast<RenderImage *>(n->renderer());

                    CachedImage* ci = r->cachedImage();

                    if (ci && ci->errorOccurred()) {

                        aElType = TBrCtlDefs::EElementBrokenImage;

                    }

                    else {

                        String alttext = imageElement->altText();

                        if (alttext.find("nokia") != 0 && alttext.find("no_save") != 0) {

                            aElType = TBrCtlDefs::EElementImageBox;

                        }

                        else {

                            aElType = TBrCtlDefs::EElementNone;

                        }

                    }

                    aFocusRect = n->getRect().Rect();

                    aRNode = n;

                    return true;

                }

                else if (n->renderer() && n->renderer()->layer()) {

                    /*FIXME: to be implemneted for scrollbar

                    Scrollbar* hbar = n->renderer()->layer()->horizontalScrollbar();

                    if (hbar && IntRect(hbar->pos(),hbar->size()).contains(aPoint.iX,aPoint.iY)) {

                        aElType = EWebCoreElementScrollBar;

                        aFocusRect = IntRect(hbar->pos(),hbar->size()).Rect();

                        return true;

                    }

                    Scrollbar* vbar = n->renderer()->layer()->verticalScrollbar();

                    if (vbar && IntRect(vbar->pos(),vbar->size()).contains(aPoint.iX,aPoint.iY)) {

                        aElType = EWebCoreElementScrollBar;

                        aFocusRect = IntRect(vbar->pos(),vbar->size()).Rect();

                        return true;

                    }*/

               }

            }

        }

    }

    return false;

}

// end of file