/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "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 <HbInstance>

#include "hsdomainmodeldatastructures.h"

#include "hspage.h"

#include "hspagetoucharea.h"

#include "hspagenewwidgetlayout.h"

#include "hsscene.h"

#include "hswidgethost.h"

#include "hswidgethostvisual.h"

#include "hswallpaper.h"

#include "hswidgetpositioningonwidgetadd.h"

#include "hswidgetpositioningonorientationchange.h"

#include "hsconfiguration.h"

#include "hspagevisual.h"

#include "hsgui.h" 

/*!

    \class HsPage

    \ingroup group_hsdomainmodel

    \brief Represents a page in the framework.

    HsPage contains group of widgets. HsPage can have a wallpaper.

*/

/*!

    Constructor.

    \a parent Owner.

    \a aFlags Window flags.

*/

HsPage::HsPage(QObject* parent)

    : QObject(parent),

      mDatabaseId(-1),

      mPageVisual(new HsPageVisual),

      mWallpaper(0),

      mRemovable(true),     

      mPageMargin(0.0)

{

    //Page margin

    mPageMargin = HSCONFIGURATION_GET(pageMargin);

    connect(HsConfiguration::instance(), SIGNAL(propertyChanged(QString)), SLOT(onPageMarginChanged(QString)));

}

/*!

    Destructor.

*/

HsPage::~HsPage()

{

    delete mWallpaper;

    delete mPageVisual;

}

/*!

    Returns the database id.

*/

int HsPage::databaseId() const

{

    return mDatabaseId;

}

/*!

    Sets the database id to \a id.

*/

void HsPage::setDatabaseId(int id)

{

    mDatabaseId = id;

}

/*!

    Loads widgets.

*/

bool HsPage::load()

{

    if (HSCONFIGURATION_GET(sceneType) == HsConfiguration::PageWallpapers) {

        mWallpaper = new HsPageWallpaper(this);

    }

    HsWidgetHost *widget = new HsWidgetHost(-1);

    mWidgets.append(widget);

    connectWidget(widget);

    widget->setPage(this);   

    widget->startWidget();

    return true;

}

/*!

    Return wallpaper.

*/

HsWallpaper *HsPage::wallpaper() const

{

    return mWallpaper;

}

/*!

    Add given existing \a widgetHost to a page. Returns true if successful

*/

bool HsPage::addExistingWidget(HsWidgetHost *widgetHost)

{

    if (!widgetHost) {

        return false;

    }

    if (mWidgets.contains(widgetHost)) {

        return true;

    }

    if (!widgetHost->setPage(this)) {

        return false;

    }

    connectWidget(widgetHost);

    mWidgets << widgetHost;  

    return true;

 }

/*!

    Remove given \a widgetHost from a page. Widget is not deleted.

    Returns true if successful

*/

bool HsPage::removeWidget(HsWidgetHost *widgetHost)

{

    if (!widgetHost || !widgetHost->setPage(0)) {

        return false;

    }

    disconnectWidget(widgetHost);

    mWidgets.removeOne(widgetHost);  

    return true;

}

/*!

    Returns list of new widgets belonging to a page. Widgets which are

    not yet layouted are considered as new widgets.

*/

QList<HsWidgetHost *> HsPage::newWidgets()

{

    return mNewWidgets;

}

/*!

    Adds new widget into a page. Returns true if successfull.

*/

bool HsPage::addNewWidget(HsWidgetHost* widgetHost, const QPointF &touchPoint)

{

    Q_UNUSED(touchPoint)

    if (!widgetHost || mWidgets.contains(widgetHost)) {

        return false;

    }

    if (mNewWidgets.contains(widgetHost)) {

        return true;

    }

    HsWidgetPresentationData presentation;

    presentation.orientation = HsGui::instance()->orientation();

    if (!widgetHost->getPresentation(presentation)) {

        presentation.orientation = HsGui::instance()->orientation();

        presentation.setPos(QPointF());

        presentation.zValue = 0;

        widgetHost->savePresentation(presentation);

    }    

    connectWidget(widgetHost);

    mNewWidgets << widgetHost;

    return true;

}

/*!

    Layouts all the new widgets

*/

void HsPage::layoutNewWidgets()

{

    if (mNewWidgets.isEmpty()) {

        return;

    }

    HsWidgetHost *widget = 0;

    for (int i = 0; i < mNewWidgets.count(); ++i) {

        widget = mNewWidgets.at(i);

        widget->setPage(this);      

        widget->showWidget();   

    }

    mWidgets << mNewWidgets;

    mNewWidgets.clear();

}

/*!

    Clears new widgets list and resets layout.

*/

void HsPage::resetNewWidgets()

{

    mNewWidgets.clear();   

}

/*!

    Remove page and all it's contained widgets from database

*/

bool HsPage::deleteFromDatabase()

{

	//Not used in mock

    return true;

}

/*!

    Return list of widgets belonging to a page

*/

QList<HsWidgetHost *> HsPage::widgets() const

{

    return mWidgets;

}

/*!

    Returns true if the page can be removed. Otherwise,

    returns false.

*/

bool HsPage::isRemovable() const

{

    return mRemovable;

}

/*!

    Sets removable flag to \a removable.

*/

void HsPage::setRemovable(bool removable)

{

    mRemovable = removable;

}

/*!

    Return true if page is default page.

*/

bool HsPage::isDefaultPage() const

{

    return mDatabaseId == HSCONFIGURATION_GET(defaultPageId);

}

/*!

    Return true if page is active page.

*/

bool HsPage::isActivePage() const

{

    return this == HsScene::instance()->activePage();

}

/*!

    Create page into database and return instance of a new page.

*/

HsPage *HsPage::createInstance(const HsPageData &pageData)

{

    Q_UNUSED(pageData);

    HsPage *page = new HsPage;

    return page;

}

/*!

    The widget is bounded in the rectangle which is smaller by PageMargin on all sides of page.

*/

QPointF HsPage::adjustedWidgetPosition(const QRectF &origWidgetRect)

{

    QRectF widgetAreaRect = contentGeometry();

    qreal widgetX = qBound(widgetAreaRect.left(), origWidgetRect.x(), widgetAreaRect.right() - origWidgetRect.width());

    qreal widgetY = qBound(widgetAreaRect.top(), origWidgetRect.y(), widgetAreaRect.bottom() - origWidgetRect.height());

    return QPointF(widgetX, widgetY);

}

/*!

    Returns rect of rectangular where widgets are allowed to be placed in the page.

*/

QRectF HsPage::contentGeometry()

{

    return contentGeometry(HsGui::instance()->orientation());

}

/*!

    Returns rect of rectangular where widgets are allowed to be placed in the page.

*/

QRectF HsPage::contentGeometry(Qt::Orientation orientation)

{

    QRectF pageRect;

    //pageRect = rect();

    if (orientation != HsGui::instance()->orientation()) {

        qreal width = pageRect.width();

        qreal height = pageRect.height();

        pageRect.setWidth(height);

        pageRect.setHeight(width);

    }

    //Take care of chrome in both orientation

    pageRect.setTop(64);

    //Shrink by page margins at each side

    return pageRect.adjusted(mPageMargin, mPageMargin, -mPageMargin, -mPageMargin);

}

/*!

    Returns rect of rectangular where widgets are allowed to be placed in the page.

*/

QRectF HsPage::contentRect()

{

    return contentRect(HsGui::instance()->orientation());

}

/*!

    Returns rect of rectangular where widgets are allowed to be placed in the page.

*/

QRectF HsPage::contentRect(Qt::Orientation orientation)

{

    QRectF rect = contentGeometry(orientation);

    rect.moveTopLeft(QPointF(0,0));

    return rect;

}

/*!

    Calls onShow() for contained widgets.

*/

void HsPage::showWidgets()

{    

}

/*!

    Calls onHide() for contained widgets.

*/

void HsPage::hideWidgets()

{

}

/*!

    Propagate online state to widgets.

*/

void HsPage::setOnline(bool online)

{

    foreach (HsWidgetHost *widget, mNewWidgets) {

        widget->setOnline(online);

    }

    foreach (HsWidgetHost *widget, mWidgets) {

        widget->setOnline(online);

    }

}

/*!

    Update widgets z-values and persist those. Active widget has top most

    z-value.

*/

{

}

/*!

    Return this page's index.

*/

int HsPage::pageIndex()

{

    return HsScene::instance()->pages().indexOf(this);

}

/*!

    Utility to connect widget signals to page.

*/

void HsPage::connectWidget(HsWidgetHost *widget)

{

    connect(widget, SIGNAL(finished()), SLOT(onWidgetFinished()));

    connect(widget, SIGNAL(faulted()), SLOT(onWidgetFaulted()));

    connect(widget->visual(), SIGNAL(resized()), SLOT(onWidgetResized()));

    connect(widget, SIGNAL(available()), SLOT(onWidgetAvailable()));

    connect(widget, SIGNAL(unavailable()), SLOT(onWidgetUnavailable()));

}

/*!

    Disconnect widget signals from page

*/

void HsPage::disconnectWidget(HsWidgetHost *widget)

{

    widget->disconnect(this);

}

/*!

    Disconnect and remove widget

*/

void HsPage::onWidgetFinished()

{

    HsWidgetHost *widget = qobject_cast<HsWidgetHost *>(sender());

    // It can be in new widget list if we haven't layouted it yet

    // or layouted new widget and widget list

    if (!mNewWidgets.removeOne(widget)) {

        mWidgets.removeOne(widget);

    }

    disconnectWidget(widget);

    widget->remove();

}

/*!

    Remove widget if it faulted

*/

void HsPage::onWidgetFaulted()

{

    onWidgetFinished();

}

/*!

    Calculates new widget position on page when widget size changes. If page has layout then there are new widgets

    and we use layout to calculate new widget positions.

*/

void HsPage::onWidgetResized()

{

}

/*!

    Show widget if it came available

*/

void HsPage::onWidgetAvailable()

{

    HsWidgetHost *widget = qobject_cast<HsWidgetHost *>(sender());

    mUnavailableWidgets.removeOne(widget);

    mWidgets.append(widget);

    widget->startWidget(isActivePage());

}

/*!

    Update internal bookkeeping and hide widget

*/

void HsPage::onWidgetUnavailable()

{

    HsWidgetHost *widget = qobject_cast<HsWidgetHost *>(sender());

    if (mWidgets.contains(widget)) {

        mWidgets.removeOne(widget);

    } else if (mNewWidgets.contains(widget)) {

        mNewWidgets.removeOne(widget);

    } else {

        return;

    }

    mUnavailableWidgets.append(widget);

}

/*!

    Run positioning algorithm for widgets which don't have position on

    target orientation. Otherwise set orientation positions for widgets.

*/

void HsPage::onOrientationChanged(Qt::Orientation orientation)

{

    Q_UNUSED(orientation)

}

void HsPage::onPageMarginChanged(const QString &value)

{

    if (value == "pageMargin") {

        mPageMargin = HSCONFIGURATION_GET(pageMargin);

        if (!mWidgets.isEmpty()) {

            foreach (HsWidgetHost *widget, mWidgets) {        

                widget->savePresentation();

            }

        }

        if (!mNewWidgets.isEmpty()) {

            foreach (HsWidgetHost *widget, mNewWidgets) {          

                widget->savePresentation();

            }

        }

    }

}

HsPageVisual *HsPage::visual() const

{

	return mPageVisual;

}