// -*- mode: c++; c-basic-offset: 4 -*-

/*

 * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.

 * Copyright (C) 2007 Trolltech ASA

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Library General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Library General Public License for more details.

 *

 * You should have received a copy of the GNU Library General Public License

 * along with this library; see the file COPYING.LIB.  If not, write to

 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

 * Boston, MA 02110-1301, USA.

 */

#include "config.h"

#include "Chrome.h"

#include "ChromeClient.h"

#include "FloatRect.h"

#include "Frame.h"

#include "FrameTree.h"

#include "HTMLFormElement.h"

#include "HTMLInputElement.h"

#include "HTMLNames.h"

#include "HitTestResult.h"

#include "InspectorController.h"

#include "Page.h"

#include "ResourceHandle.h"

#include "Settings.h"

#include "kjs_window.h"

#include <wtf/PassRefPtr.h>

#include <wtf/RefPtr.h>

#include <wtf/Vector.h>

namespace WebCore {

using namespace HTMLNames;

using namespace KJS;

using namespace std;

class PageGroupLoadDeferrer : Noncopyable {

public:

    PageGroupLoadDeferrer(Page*, bool deferSelf);

    ~PageGroupLoadDeferrer();

private:

    Vector<RefPtr<Frame>, 16> m_deferredFrames;

#if !PLATFORM(MAC)

    Vector<pair<RefPtr<Frame>, PausedTimeouts*>, 16> m_pausedTimeouts;

#endif

};

Chrome::Chrome(Page* page, ChromeClient* client)

    : m_page(page)

    , m_client(client)

{

    ASSERT(m_client);

}

Chrome::~Chrome()

{

    m_client->chromeDestroyed();

}

void Chrome::setWindowRect(const FloatRect& rect) const

{

    m_client->setWindowRect(rect);

}

FloatRect Chrome::windowRect() const

{

    return m_client->windowRect();

}

FloatRect Chrome::pageRect() const

{

    return m_client->pageRect();

}

float Chrome::scaleFactor()

{

    return m_client->scaleFactor();

}

void Chrome::focus() const

{

    m_client->focus();

}

void Chrome::unfocus() const

{

    m_client->unfocus();

}

bool Chrome::canTakeFocus(FocusDirection direction) const

{

    return m_client->canTakeFocus(direction);

}

void Chrome::takeFocus(FocusDirection direction) const

{

    m_client->takeFocus(direction);

}

Page* Chrome::createWindow(Frame* frame, const FrameLoadRequest& request) const

{

    return m_client->createWindow(frame, request);

}

Page* Chrome::createModalDialog(Frame* frame, const FrameLoadRequest& request) const

{

    return m_client->createModalDialog(frame, request);

}

void Chrome::show() const

{

    m_client->show();

}

bool Chrome::canRunModal() const

{

    return m_client->canRunModal();

}

bool Chrome::canRunModalNow() const

{

    // If loads are blocked, we can't run modal because the contents

    // of the modal dialog will never show up!

    return canRunModal() && !ResourceHandle::loadsBlocked();

}

void Chrome::runModal() const

{

    if (m_page->defersLoading()) {

        LOG_ERROR("Tried to run modal in a page when it was deferring loading -- should never happen.");

        return;

    }

    // Defer callbacks in all the other pages in this group, so we don't try to run JavaScript

    // in a way that could interact with this view.

    PageGroupLoadDeferrer deferrer(m_page, false);

    TimerBase::fireTimersInNestedEventLoop();

    m_client->runModal();

}

void Chrome::setToolbarsVisible(bool b) const

{

    m_client->setToolbarsVisible(b);

}

bool Chrome::toolbarsVisible() const

{

    return m_client->toolbarsVisible();

}

void Chrome::setStatusbarVisible(bool b) const

{

    m_client->setStatusbarVisible(b);

}

bool Chrome::statusbarVisible() const

{

    return m_client->statusbarVisible();

}

void Chrome::setScrollbarsVisible(bool b) const

{

    m_client->setScrollbarsVisible(b);

}

bool Chrome::scrollbarsVisible() const

{

    return m_client->scrollbarsVisible();

}

void Chrome::setMenubarVisible(bool b) const

{

    m_client->setMenubarVisible(b);

}

bool Chrome::menubarVisible() const

{

    return m_client->menubarVisible();

}

void Chrome::setResizable(bool b) const

{

    m_client->setResizable(b);

}

void Chrome::addMessageToConsole(MessageSource source, MessageLevel level, const String& message, unsigned lineNumber, const String& sourceID)

{

    if (source == JSMessageSource )

        m_client->addMessageToConsole(message, level, lineNumber, sourceID);

    if (InspectorController* inspector = m_page->inspectorController())

        inspector->addMessageToConsole(source, level, message, lineNumber, sourceID);

}

bool Chrome::canRunBeforeUnloadConfirmPanel()

{

    return m_client->canRunBeforeUnloadConfirmPanel();

}

bool Chrome::runBeforeUnloadConfirmPanel(const String& message, Frame* frame)

{

    // Defer loads in case the client method runs a new event loop that would 

    // otherwise cause the load to continue while we're in the middle of executing JavaScript.

    PageGroupLoadDeferrer deferrer(m_page, true);

    return m_client->runBeforeUnloadConfirmPanel(message, frame);

}

void Chrome::closeWindowSoon()

{

    m_client->closeWindowSoon();

}

void Chrome::runJavaScriptAlert(Frame* frame, const String& message)

{

    // Defer loads in case the client method runs a new event loop that would 

    // otherwise cause the load to continue while we're in the middle of executing JavaScript.

    PageGroupLoadDeferrer deferrer(m_page, true);

    ASSERT(frame);

    String text = message;

    text.replace('\\', frame->backslashAsCurrencySymbol());

    m_client->runJavaScriptAlert(frame, text);

}

bool Chrome::runJavaScriptConfirm(Frame* frame, const String& message)

{

    // Defer loads in case the client method runs a new event loop that would 

    // otherwise cause the load to continue while we're in the middle of executing JavaScript.

    PageGroupLoadDeferrer deferrer(m_page, true);

    ASSERT(frame);

    String text = message;

    text.replace('\\', frame->backslashAsCurrencySymbol());

    return m_client->runJavaScriptConfirm(frame, text);

}

bool Chrome::runJavaScriptPrompt(Frame* frame, const String& prompt, const String& defaultValue, String& result)

{

    // Defer loads in case the client method runs a new event loop that would 

    // otherwise cause the load to continue while we're in the middle of executing JavaScript.

    PageGroupLoadDeferrer deferrer(m_page, true);

    ASSERT(frame);

    String promptText = prompt;

    promptText.replace('\\', frame->backslashAsCurrencySymbol());

    String defaultValueText = defaultValue;

    defaultValueText.replace('\\', frame->backslashAsCurrencySymbol());

    bool ok = m_client->runJavaScriptPrompt(frame, promptText, defaultValueText, result);

    if (ok)

        result.replace(frame->backslashAsCurrencySymbol(), '\\');

    return ok;

}

void Chrome::setStatusbarText(Frame* frame, const String& status)

{

    ASSERT(frame);

    String text = status;

    text.replace('\\', frame->backslashAsCurrencySymbol());

    m_client->setStatusbarText(text);

}

bool Chrome::shouldInterruptJavaScript()

{

    // Defer loads in case the client method runs a new event loop that would 

    // otherwise cause the load to continue while we're in the middle of executing JavaScript.

    PageGroupLoadDeferrer deferrer(m_page, true);

    return m_client->shouldInterruptJavaScript();

}

IntRect Chrome::windowResizerRect() const

{

    return m_client->windowResizerRect();

}

void Chrome::addToDirtyRegion(const IntRect& rect)

{

    m_client->addToDirtyRegion(rect);

}

void Chrome::scrollBackingStore(int dx, int dy, const IntRect& scrollViewRect, const IntRect& clipRect)

{

    m_client->scrollBackingStore(dx, dy, scrollViewRect, clipRect);

}

void Chrome::updateBackingStore()

{

    m_client->updateBackingStore();

}

void Chrome::mouseDidMoveOverElement(const HitTestResult& result, unsigned modifierFlags)

{

    m_client->mouseDidMoveOverElement(result, modifierFlags);

}

void Chrome::setToolTip(const HitTestResult& result)

{

    // First priority is a potential toolTip representing a spelling or grammar error

    String toolTip = result.spellingToolTip();

    // Next priority is a toolTip from a URL beneath the mouse (if preference is set to show those).

    if (toolTip.isEmpty() && m_page->settings()->showsURLsInToolTips()) {

        if (Node* node = result.innerNonSharedNode()) {

            // Get tooltip representing form action, if relevant

            if (node->hasTagName(inputTag)) {

                HTMLInputElement* input = static_cast<HTMLInputElement*>(node);

                if (input->inputType() == HTMLInputElement::SUBMIT)

                    if (HTMLFormElement* form = input->form())

                        toolTip = form->action();

            }

        }

        // Get tooltip representing link's URL

        if (toolTip.isEmpty())

            // FIXME: Need to pass this URL through userVisibleString once that's in WebCore

            toolTip = result.absoluteLinkURL().url();

    }

    // Lastly we'll consider a tooltip for element with "title" attribute

    if (toolTip.isEmpty())

        toolTip = result.title();

    m_client->setToolTip(toolTip);

}

void Chrome::print(Frame* frame)

{

    m_client->print(frame);

}

#if PLATFORM(SYMBIAN)

void Chrome::setElementVisibilityChanged(bool visibility)

{

    m_client->setElementVisibilityChanged(visibility);

}

void Chrome::wait(double t)

{

    m_client->wait(t);    

}

#endif    

PageGroupLoadDeferrer::PageGroupLoadDeferrer(Page* page, bool deferSelf)

{

    const HashSet<Page*>* group = page->frameNamespace();

    if (!group)

        return;

    HashSet<Page*>::const_iterator end = group->end();

    for (HashSet<Page*>::const_iterator it = group->begin(); it != end; ++it) {

        Page* otherPage = *it;

        if ((deferSelf || otherPage != page)) {

            if (!otherPage->defersLoading())

                m_deferredFrames.append(otherPage->mainFrame());

#if !PLATFORM(MAC)

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

                if (Window* window = Window::retrieveWindow(frame)) {

                    PausedTimeouts* timeouts = window->pauseTimeouts();

                    m_pausedTimeouts.append(make_pair(frame, timeouts));

                }

            }

#endif

        }

    }

    size_t count = m_deferredFrames.size();

    for (size_t i = 0; i < count; ++i)

        if (Page* page = m_deferredFrames[i]->page())

            page->setDefersLoading(true);

}

PageGroupLoadDeferrer::~PageGroupLoadDeferrer()

{

    size_t count = m_deferredFrames.size();

    for (size_t i = 0; i < count; ++i)

        if (Page* page = m_deferredFrames[i]->page())

            page->setDefersLoading(false);

#if !PLATFORM(MAC)

    count = m_pausedTimeouts.size();

    for (size_t i = 0; i < count; i++) {

        Window* window = Window::retrieveWindow(m_pausedTimeouts[i].first.get());

        if (window)

            window->resumeTimeouts(m_pausedTimeouts[i].second);

        delete m_pausedTimeouts[i].second;

    }

#endif

}

} // namespace WebCore