--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/homescreenapp/hsdomainmodel/src/hsscene.cpp	Tue Aug 31 15:06:34 2010 +0300
@@ -0,0 +1,385 @@
+/*
+* Copyright (c) 2010 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 <QApplication>
+
+#include <HbInstance>
+#include <HbMainWindow>
+#include <hbevent.h>
+
+#include "hsdomainmodeldatastructures.h"
+#include "hsscene.h"
+#include "hspage.h"
+#include "hswidgethost.h"
+#include "hsdatabase.h"
+#include "hswallpaper.h"
+#include "hsconfiguration.h"
+
+
+/*!
+    \class HsScene
+    \ingroup group_hsdomainmodel
+    \brief Represents a scene in the framework.
+    HsScene can have a wallpaper.
+*/
+
+/*!
+    Destructor.
+*/
+HsScene::~HsScene()
+{
+    delete mWallpaper;
+    qDeleteAll(mPages);
+}
+
+/*!
+    Return database id.
+*/
+int HsScene::databaseId() const
+{
+    return mDatabaseId;
+}
+
+/*!
+    Load scene from database.
+*/
+bool HsScene::load()
+{
+    HsDatabase *db = HsDatabase::instance();
+
+    HsSceneData sceneData;
+    if (!db->scene(sceneData)) {
+        return false;
+    }
+
+    mDatabaseId = sceneData.id;
+
+    QList<HsPageData> pageDatas;
+    if (!db->pages(pageDatas) || pageDatas.empty()) {
+        return false;
+    }
+    
+    if (HSCONFIGURATION_GET(sceneType) == HsConfiguration::SceneWallpaper) {
+        mWallpaper = new HsSceneWallpaper(this);
+    }
+
+    foreach (HsPageData pageData, pageDatas) {
+        HsPage *page = new HsPage;
+        page->setDatabaseId(pageData.id);
+        if (page->load()) {
+            mPages.append(page);
+        } else {
+            delete page;
+            continue;
+        }
+        if (pageData.id == HSCONFIGURATION_GET(defaultPageId)) {
+            mActivePage = page;
+            mActivePage->setRemovable(false);
+        }
+    }
+    
+	return true;
+}
+
+/*!
+    Return wallpaper.
+*/
+HsWallpaper *HsScene::wallpaper() const
+{
+    return mWallpaper;
+}
+
+/*!
+   Return pages array.
+*/
+QList<HsPage *> HsScene::pages() const
+{
+    return mPages;
+}
+
+/*!
+    Add page \a page.
+*/
+bool HsScene::addPage(HsPage *page)
+{
+    if (!page) {
+        return false;
+    }
+
+    if (mPages.contains(page)) {
+        return true;
+    }
+
+    HsDatabase *db = HsDatabase::instance();
+
+    HsPageData data;
+    data.id = page->databaseId();
+    if (!db->page(data)) {
+        return false;
+    }
+
+    int addPosition = data.indexPosition;
+
+    db->transaction();
+
+    for (int i = data.indexPosition; i < mPages.count(); ++i) {
+        data.id = mPages.at(i)->databaseId();
+        data.indexPosition = i + 1;
+        if (!db->updatePage(data)) {
+            db->rollback();
+            return false;
+        }
+    }
+
+    db->commit();
+
+    mPages.insert(addPosition, page);
+    return true;
+}
+
+/*!
+    Removes page \a page.
+*/
+bool HsScene::removePage(HsPage *page)
+{
+    if (!page) {
+        return false;
+    }
+
+    if (!mPages.contains(page)) {
+        return true;
+    }
+
+    int nextIndex = mPages.indexOf(page) + 1;
+
+    HsDatabase *db = HsDatabase::instance();
+    db->transaction();
+    // update page indexes
+    HsPageData data;
+    int pageCount(mPages.count());
+    for (;nextIndex < pageCount; ++nextIndex) {
+        data.id = mPages.at(nextIndex)->databaseId();
+        data.indexPosition = nextIndex - 1;
+        if (!db->updatePage(data)) {
+            db->rollback();
+            return false;
+        }
+    }
+    // page will remove itself from database
+    if (!page->deleteFromDatabase()) {
+        db->rollback();
+        return false;
+    }
+
+    db->commit();
+    // update internal list
+    int index = mPages.indexOf(page);
+    bool lastPage(mPages.last() == page);
+    mPages.removeOne(page);
+    if (mPages.isEmpty()) {
+        mActivePage = NULL;
+    }else if (mActivePage == page) {
+        if (lastPage) {
+            index--;
+        }
+        setActivePageIndex(index);
+    }
+    
+    return true;
+}
+
+/*!
+    Set active page \a page.
+*/
+bool HsScene::setActivePage(HsPage *page)
+{
+    if (!page) {
+        return false;
+    }
+
+    if (!mPages.contains(page)) {
+        return false;
+    }
+
+    if (page == mActivePage) {
+        return true;
+    }
+
+    mActivePage = page;
+    emit activePageChanged();
+
+    foreach (HsPage *p, mPages) {
+        if (p == mActivePage) {
+            p->showWidgets();
+        } else {
+            p->hideWidgets();
+        }
+    }
+
+    return true;
+}
+
+/*!
+    Set active page \a index.
+*/
+bool HsScene::setActivePageIndex(int index)
+{
+    if (index < 0 || mPages.count() <= index) {
+        return false;
+    }
+    return setActivePage(mPages[index]);
+}
+
+/*!
+    Return active page.
+*/
+HsPage *HsScene::activePage() const
+{
+    return mActivePage;
+}
+
+/*!
+    Return active page index.
+*/
+int HsScene::activePageIndex() const
+{
+    return mPages.indexOf(mActivePage);
+}
+
+/*!
+    Set active widget \a widget.
+*/
+void HsScene::setActiveWidget(HsWidgetHost *widget)
+{
+    mActiveWidget = widget;
+}
+
+/*!
+   Return active widget.
+*/
+HsWidgetHost *HsScene::activeWidget() const
+{
+    return mActiveWidget;
+}
+/*!
+    Toggle application online state. Defaults
+    to true.
+*/
+void HsScene::setOnline(bool online)
+{
+    mIsOnline = online;
+    foreach (HsPage *page, mPages) {
+        page->setOnline(online);
+    }
+}
+
+/*!
+    Return current online setting.
+*/
+bool HsScene::isOnline()const
+{
+    return mIsOnline;
+}
+
+/*!
+    Singleton.
+*/
+HsScene *HsScene::instance()
+{
+    return mInstance;
+}
+
+HsScene *HsScene::takeInstance()
+{
+    HsScene *instance = mInstance;
+    mInstance = 0;
+    return instance;
+}
+ 
+void HsScene::setInstance(HsScene *instance)
+{
+    if (mInstance != instance) {
+        delete mInstance;
+        mInstance = instance; 
+    }    
+}
+
+/*!
+    Return main window.
+*/
+/*HbMainWindow *HsGui::instance()
+{
+    return hbInstance->allMainWindows().first();
+}
+*/
+/*!
+    Return current orientation.
+*/
+/*Qt::Orientation HsGui::instance()->orientation()
+{
+    return mainWindow()->orientation();
+}*/
+
+/*!
+    Listens for application background/foreground changes.
+*/
+bool HsScene::eventFilter(QObject *watched, QEvent *event)
+{
+    if (event->type() == QEvent::ApplicationDeactivate && !mIsBackground) {
+        qDebug() << "QEvent::ApplicationDeactivate: calling hide for active page widgets";
+        mActivePage->hideWidgets(); 
+        mIsBackground = true;
+    } else if (event->type() == QEvent::ApplicationActivate && mIsBackground) {
+        if(!mIsSleeping) {
+            qDebug() << "QEvent::ApplicationActivate: not sleeping, calling show for active page widgets";
+            mActivePage->showWidgets();
+        }
+        mIsBackground = false;
+    } else if (event->type() == HbEvent::SleepModeEnter && !mIsSleeping) {
+        qDebug() << "HbEvent::SleepModeEnter: calling hide for active page widgets";
+        mActivePage->hideWidgets();
+        mIsSleeping = true;
+    } else if (event->type() == HbEvent::SleepModeExit && mIsSleeping) {
+        if(!mIsBackground) {
+           qDebug() << "HbEvent::SleepModeExit: in foreground, calling show for active page widgets";
+           mActivePage->showWidgets();
+        }
+        mIsSleeping = false;
+    }    
+
+    return QObject::eventFilter(watched, event);
+}
+
+/*!
+    Constructor
+*/
+HsScene::HsScene(QObject *parent)
+  : QObject(parent),
+    mDatabaseId(-1),
+    mWallpaper(0),
+    mActivePage(0),
+    mActiveWidget(0),
+    mIsOnline(true),
+    mIsBackground(false),
+    mIsSleeping(false)
+{
+}
+
+/*!
+    Points to the scene instance.
+*/
+HsScene *HsScene::mInstance = 0;